#include <stdlib.h>
#include <stddef.h>
#include <time.h>
#include <limits.h>
#include <string.h>

#include "game.h"
#include "input.h"
#include "renderer.h"
#include "../common/log.h"
#include "shader.h"
#include "entity.h"
#include "geometry.h"
#include "../common/array.h"
#include "transform.h"
#include "camera.h"
#include "model.h"
#include "scene.h"
#include "../common/utils.h"
#include "texture.h"
#include "material.h"
#include "framebuffer.h"
#include "light.h"
#include "gl_load.h"
#include "gui.h"
#include "editor.h"
#include "sprite.h"
#include "console.h"
#include "../common/string_utils.h"
#include "../common/parser.h"
#include "../common/hashmap.h"
#include "../common/variant.h"
#include "../system/platform.h"
#include "debug_vars.h"
#include "im_render.h"
#include "event.h"
#include "../common/limits.h"
#include "scene_funcs.h"
#include "gui_game.h"

#define UNUSED(a) (void)a
#define MIN_NUM(a,b) ((a) < (b) ? (a) : (b))
#define MAX_NUM(a,b) ((a) < (b) ? (b) : (a))
#define LEN(a) (sizeof(a)/sizeof(a)[0])

static void game_update(float dt);
static void game_update_physics(float fixed_dt);
static void game_post_update(float dt);
static void game_render(void);
static void game_debug(float dt);
static void game_debug_gui(float dt);
static void game_scene_setup(void);
static void game_on_log_message(const char* message, va_list args);
static void game_on_log_warning(const char* warning_message, va_list args);
static void game_on_log_error(const char* context, const char* error_message, va_list args);
static void game_on_player_death(struct Event* event);
static void game_on_scene_loaded(struct Event* event);
static void game_on_scene_cleared(struct Event* event);

static struct Game_State* game_state = NULL;

bool game_init(struct Window* window, struct Hashmap* cvars)
{
    game_state = malloc(sizeof(*game_state));
    if(!game_state)
    {
		log_error("game:init", "Out of memory, failed to allocate game_state");
		return false;
    }
    else
    {
		game_state->window                   = window;
		game_state->cvars                    = cvars;
		game_state->is_initialized           = false;
		game_state->quit                     = false;
		game_state->update_scene             = true;
		game_state->fixed_delta_time         = 1.f / 60.f;
		game_state->game_mode                = GAME_MODE_GAME;
		game_state->renderer                 = calloc(1, sizeof(*game_state->renderer));
		game_state->scene                    = calloc(1, sizeof(*game_state->scene));
		game_state->console                  = calloc(1, sizeof(*game_state->console));
		game_state->editor                   = calloc(1, sizeof(*game_state->editor));
		game_state->gui_editor               = calloc(1, sizeof(*game_state->gui_editor));
		game_state->gui_game                 = calloc(1, sizeof(*game_state->gui_game));
		game_state->event_manager            = calloc(1, sizeof(*game_state->event_manager));
		game_state->sound                    = calloc(1, sizeof(*game_state->sound));
		game_state->debug_vars               = calloc(1, sizeof(*game_state->debug_vars));
		game_state->scene_init_func_table    = hashmap_create();
		game_state->scene_cleanup_func_table = hashmap_create();

		log_message_callback_set(game_on_log_message);
		log_warning_callback_set(game_on_log_warning);
		log_error_callback_set(game_on_log_error);

		if(!gl_load_extentions())
		{
			log_error("game:init", "Failed to load GL extentions");
			return false;
		}
		else
		{
			log_message("Loaded GL extentions");
		}
		
		hashmap_ptr_set(game_state->scene_init_func_table, "scene_1", &scene_1_init);
		hashmap_ptr_set(game_state->scene_cleanup_func_table, "scene_1", &scene_1_cleanup);

		srand(time(NULL));

		event_manager_init(game_state->event_manager);
		input_init();
		shader_init();
		texture_init();
		framebuffer_init();
		gui_init(game_state->gui_editor);
		gui_game_init(game_state->gui_game);
		console_init(game_state->console);
		geom_init();
		sound_init(game_state->sound);
		debug_vars_init(game_state->debug_vars);

		renderer_init(game_state->renderer);
		scene_init(game_state->scene);
		editor_init(game_state->editor);

    }
	
    /* Debug scene setup */
    //game_scene_setup();
	event_manager_subscribe(game_state->event_manager, EVT_SCENE_LOADED, &game_on_scene_loaded);
	event_manager_subscribe(game_state->event_manager, EVT_SCENE_CLEARED, &game_on_scene_cleared);
	event_manager_subscribe(game_state->event_manager, EVT_PLAYER_DIED, &game_on_player_death);

    game_state->is_initialized = scene_load(game_state->scene, "scene_1", DIRT_INSTALL) ? true : false;
	return game_state->is_initialized;
}

void game_scene_setup(void)
{	
    //   struct Entity* player = scene_add_new("player", ET_CAMERA);
    //   game_state->player_node = player->id;
    //   vec3 viewer_pos = {10, 5, 100};
    //   transform_set_position(player, &viewer_pos);
    //   int render_width, render_height;
    //struct Hashmap* config = platform->config.get();
    //render_width  = hashmap_int_get(config, "render_width");
    //render_height = hashmap_int_get(config, "render_height");
    //   camera_create(player, render_width, render_height);
    //   camera_attach_fbo(player, render_width, render_height, 1, 1, 1);
    //   vec4_fill(&player->camera.clear_color, 0.3f, 0.6f, 0.9f, 1.0f);

    //   vec4 color = {1.f, 1.f, 1.f, 1.f };
    //   struct Entity* new_ent = scene_add_new("Model_Entity", ET_STATIC_MESH);
    //   vec3 position = {0, 0, -5};
    //   transform_translate(new_ent, &position, TS_WORLD);
    //   new_ent->renderable = true;
    //   model_create(new_ent, "default.pamesh", "Blinn_Phong");
    //   model_set_material_param(new_ent, "diffuse_color", &color);
    //   int tex = texture_create_from_file("white.tga", TU_DIFFUSE);
    //   model_set_material_param(new_ent, "diffuse_texture", &tex);
    //   vec3 scale = {1, 1, 1};
    //   transform_scale(new_ent, &scale);

    //   /* struct Entity* sound_ent = scene_add_as_child("Sound_ENT", ET_SOUND_SOURCE, new_ent->id); */
    //   /* struct Sound_Source* sound_source = &sound_ent->sound_source; */
    //   /* platform->sound.source_create(true, 1, &sound_source->source_handle, &sound_source->buffer_handles[0]); */
    //   /* platform->sound.source_load_wav(sound_source->source_handle, */
    //   /*                                 sound_source->buffer_handles[0], */
    //   /*                                 "BigExplosion.wav"); */
    //   /* //sound_source_relative_set(source, true); */
    //   /* platform->sound.source_volume_set(sound_source->source_handle, 1.f); */
    //   /* platform->sound.source_loop_set(sound_source->source_handle, true); */
    //   /* platform->sound.source_play(sound_source->source_handle); */

    //   int parent_node = new_ent->id;
    //   int num_suz = 50;
    //   srand(time(NULL));
    //   for(int i = 0; i < num_suz; i++)
    //   {
    //       int x = rand() % num_suz;
    //       int y = rand() % num_suz;
    //       int z = rand() % num_suz;
    //       x++; y++; z++;
    //       struct Entity* suz = scene_add_as_child("Suzanne", ET_STATIC_MESH, parent_node);
    //       //struct Entity* suz = scene_add_new("Suzanne", ET_STATIC_MESH);
    //       suz->renderable = true;
    //       model_create(suz, "default.pamesh", "Blinn_Phong");
    //       model_set_material_param(suz, "diffuse_color", &color);
    //       float spec_str = 80.f;
    //       model_set_material_param(suz, "specular_strength", &spec_str);
    //       vec3 s_pos = {x, 0, z};
    //       transform_translate(suz, &s_pos, TS_WORLD);
    //   }


    //   struct Entity* ground = scene_add_new("Ground", ET_STATIC_MESH);
    //   ground->renderable = true;
    //   model_create(ground, "default.pamesh", "Blinn_Phong");
    //   model_set_material_param(ground, "diffuse_color", &color);
    //   int white_tex = texture_create_from_file("white.tga", TU_DIFFUSE);
    //   model_set_material_param(ground, "diffuse_texture", &white_tex);
    //   float spec_str = 80.f;
    //   model_set_material_param(ground, "specular_strength", &spec_str);
    //   vec3 pos = {0, -5, 0};
    //   vec3 scale_ground = {400.f, 2.f, 400.f};
    //   transform_set_position(ground, &pos);
    //   transform_scale(ground, &scale_ground);

    //   /* struct Entity* screen = scene_add_new("Screen", NULL); */
    //   /* struct Model* screen_model = entity_component_add(screen, C_MODEL, NULL, NULL); */
    //   /* screen_model->geometry_index = geom_find("Quad"); */
    //   /* struct Entity* screen_camera = scene_add_as_child("Screen_Camera", NULL, screen->node); */
    //   /* struct Transform* screen_camera_tran = entity_component_get(screen_camera, C_TRANSFORM); */
    //   /* transform_rotate(screen_camera_tran, &UNIT_Y, 180.f, TS_WORLD); */
    //   /* struct Camera* cam = entity_component_add(screen_camera, C_CAMERA, 50, 50); */
    //   /* cam->nearz = 0.1f; */
    //   /* cam->farz  = 50.f; */
    //   /* camera_update_proj(cam); */
    //   /* camera_attach_fbo(cam, 128, 128, 1, 1, 0); */
    //   /* model_set_material_param(screen_model, "diffuse_color", &color); */
    //   /* model_set_material_param(screen_model, "diffuse_texture", &cam->render_tex); */

    //   const int MAX_LIGHTS = 10;
    //   for(int i = 0; i < MAX_LIGHTS; i++)
    //   {
    //       int x = rand() % MAX_LIGHTS;
    //       int z = rand() % MAX_LIGHTS;
    //       x++; z++;
    //       struct Entity* light_ent = scene_add_new("Light_Ent", ET_LIGHT);
    //       vec3 lt_pos = {x * 20, 0, z * 20};
    //       transform_set_position(light_ent, &lt_pos);
    //       light_create(light_ent, LT_POINT);
    //       vec3_fill(&light_ent->light.color, 1.f / (float)x, 1.f / ((rand() % 10) + 1.f), 1.f / (float)z);
    //       light_ent->light.intensity = 1.f;
    //   }

    /////* log_message("Sizeof Entity : %d", sizeof(struct Entity)); */

    /////* struct Entity* light_ent = entity_find("Ground"); */
    /////* entity_save(light_ent, "ground.ent", DT_INSTALL); */

    //   struct Entity* suz = entity_find("Suzanne");
    //   struct Entity* sound_ent = scene_add_as_child("Sound_Ent", ET_SOUND_SOURCE, suz->id);
    //   struct Sound_Source* sound_source = &sound_ent->sound_source;
    //sound_source->source_filename = str_new("sounds/teh_beatz.wav");
    //   sound_source->type             = ST_WAV;
    //   sound_source->attenuation_type = SA_INVERSE;
    //   sound_source->rolloff_factor   = 0.95f;
    //   sound_source->loop             = true;
    //   sound_source->volume           = 0.5f;
    //   sound_source->min_distance     = 1.f;
    //   sound_source->max_distance     = 10.f;
    //   sound_source->playing          = true;

    //   sound_source->source_instance  = 0;
    //   sound_source->source           = NULL;

    //   entity_apply_sound_params(sound_ent);

    //   scene_save("test_scene.symtres", DIRT_INSTALL);

    //  if(scene_load("test_scene.symtres", DIRT_INSTALL))
    //  {
    //      log_message("Scene loaded!");
    //      struct Entity* player = entity_find("player");
    //      game_state->player_node = player->id;

    //struct Entity* suz = entity_find("Model_Entity");
    //suz_id = suz->id;
    //      /*struct Camera* camera = &player->camera;
    //      camera->ortho = true;
    //      camera->farz  = 500.f;
    //      camera->nearz = -500.f;
    //      camera_update_proj(player);*/
    //  }

    //platform->physics.cs_plane_create(0, 1, 0, 0);
    ////Rigidbody box = platform->physics.body_box_create(2.5, 2.5, 2.5);
    //Rigidbody box = platform->physics.body_sphere_create(3.5);
    ///*platform->physics.body_position_set(box, 0.f, 50.f, 0.f);
    //platform->physics.body_mass_set(box, 10.f);*/
    ///*platform->physics.body_data_set(box, (void*)suz_id);*/
    ////platform->physics.body_force_add(box, -100.f, 0.f, 0.f);
    //struct Entity* suz = entity_find("Model_Entity");
    //entity_rigidbody_set(suz, box);
    //suz->collision.on_collision = &on_collision_test;

    //Rigidbody sphere = platform->physics.body_sphere_create(3.5f);
    //struct Entity* sphere_ent = entity_find("Sphere_Ent");
    //entity_rigidbody_set(sphere_ent, sphere);

    ////Collision_Shape plane = platform->physics.cs_plane_create(0, 1, 0, 0);
    //Rigidbody ground_box = platform->physics.body_box_create(10, 5, 10);
    //platform->physics.body_position_set(ground_box, 0.f, 0.f, 0.f);
    ///*platform->physics.body_kinematic_set(ground_box);*/
    //struct Entity* ground = entity_find("Ground");
    ////entity_collision_shape_set(ground, plane);
    //entity_rigidbody_set(ground, ground_box);

    struct Static_Mesh* ground = scene_static_mesh_create(game_state->scene, "Ground_Mesh", NULL, "default.pamesh", MAT_BLINN);
    vec3 scale = {200.f, 1.f, 200.f};
    transform_scale(ground, &scale);
    ground->model.material_params[MMP_DIFFUSE_TEX].val_int = texture_create_from_file("white.tga", TU_DIFFUSE);
    ground->model.material_params[MMP_DIFFUSE].val_float = 0.5f;
    ground->model.material_params[MMP_SPECULAR].val_float = 1.f;
    ground->model.material_params[MMP_SPECULAR_STRENGTH].val_float = 1.f;
    vec3_fill(&ground->model.material_params[MMP_DIFFUSE_COL].val_vec3, 1.f, 1.f, 1.f);
	
    int num_suz = 50;
    char suz_name[MAX_ENTITY_NAME_LEN];
    vec3 suz_pos = {0.f};
    for(int i = 0; i < num_suz; i++)
    {
		memset(&suz_name, '\0', MAX_ENTITY_NAME_LEN);
		snprintf(&suz_name[0], MAX_ENTITY_NAME_LEN, "Suzanne_%d", i);
		struct Static_Mesh* suzanne = scene_static_mesh_create(game_state->scene, suz_name, NULL, "suzanne.symbres", MAT_BLINN);
		suzanne->model.material_params[MMP_DIFFUSE_TEX].val_int = texture_create_from_file("white.tga", TU_DIFFUSE);
		suzanne->model.material_params[MMP_DIFFUSE].val_float = 0.5f;
		suzanne->model.material_params[MMP_SPECULAR].val_float = 1.f;
		suzanne->model.material_params[MMP_SPECULAR_STRENGTH].val_float = 1.f;
		vec3_fill(&suzanne->model.material_params[MMP_DIFFUSE_COL].val_vec3, 1.f, 0.f, 1.f);
		suz_pos.x = i + 10.f;
		suz_pos.y = 5.f;
		suz_pos.z = i + 5.f;
		transform_set_position(suzanne, &suz_pos);

    }

	//struct Sound_Source* sound_source = scene_sound_source_create(game_state->scene, "Beats", NULL, "sounds/windy_ambience.ogg", ST_WAV_STREAM, true, true);
	//struct Sound_Source* sound_source = scene_sound_source_create(game_state->scene, "Beats", NULL, "sounds/algebra_loop.ogg", ST_WAV_STREAM, true, true);
	struct Sound_Source* sound_source = scene_sound_source_create(game_state->scene, "Beats", NULL, "sounds/teh_beatz.wav", ST_WAV, true, true);
	transform_translate(sound_source, &(vec3){0.f, 3.f, 0.f}, TS_WORLD);

    struct Light* light = scene_light_create(game_state->scene, "Test_Light", NULL, LT_POINT);
    light->color.x = 1.f;
    light->color.y = 1.f;
    light->color.z = 1.f;
    light->radius  = 20;
    vec3 light_pos = {0.f, 5.f, 0.f};
    transform_translate(light, &light_pos, TS_WORLD);

	struct Static_Mesh* suzanne = scene_static_mesh_create(game_state->scene, "Suz", NULL, "suzanne.symbres", MAT_BLINN);
	suzanne->model.material_params[MMP_DIFFUSE_TEX].val_int = texture_create_from_file("white.tga", TU_DIFFUSE);
	suzanne->model.material_params[MMP_DIFFUSE].val_float = 0.5f;
	suzanne->model.material_params[MMP_SPECULAR].val_float = 1.f;
	suzanne->model.material_params[MMP_SPECULAR_STRENGTH].val_float = 1.f;
	vec4_fill(&suzanne->model.material_params[MMP_DIFFUSE_COL].val_vec4, 1.f, 0.f, 1.f, 1.f);
	suz_pos.x = 0.f;
	suz_pos.y = 5.f;
	suz_pos.z = 5.f;
	transform_set_position(suzanne, &suz_pos);

	struct Light* suz_light = scene_light_create(game_state->scene, "Suz_Light", suzanne, LT_POINT);
	suz_light->color.x = 1.f;
	suz_light->color.y = 0.f;
	suz_light->color.z = 0.f;
    vec3 suz_light_pos = {0.f, 3.f, 0.f};
    transform_translate(suz_light, &suz_light_pos, TS_PARENT);
}

void game_debug(float dt)
{
    if(input_is_key_pressed(KEY_PAGEDOWN))
    {
		struct Entity* model = scene_find(game_state->scene, "Suzanne_Test_Parent");
		vec3 x_axis = {0, 1, 0};
		transform_rotate(model, &x_axis, 25.f * dt, TS_WORLD);
    }

    if(input_is_key_pressed(KEY_PAGEUP))
    {
		struct Entity* model = scene_find(game_state->scene, "Suzanne_Test_Parent");
		vec3 y_axis = {0, 0, 1};
		//transform_rotate(mod_tran, &y_axis, 25.f * dt, TS_LOCAL);
		vec3 amount = {0, 0, -5 * dt};
		transform_translate(model, &amount, TS_LOCAL);
    }

//    if(input_is_key_pressed(KEY_N))
//    {
//		struct Entity* model = scene_find(game_state->scene, "Model_Entity");
//		/* vec3 y_axis = {0, 0, 1}; */
//		/* transform_rotate(mod_tran, &y_axis, 25.f * dt, TS_WORLD); */
//		vec3 amount = {0, 0, 5 * dt};
//		transform_translate(model, &amount, TS_LOCAL);
//    }

    /*struct Entity* model = scene_find("Model_Entity");
      vec3 x_axis = {0, 1, 0};
      transform_rotate(model, &x_axis, 50.f * dt, TS_WORLD);
      vec3 amount = {0, 0, -5 * dt};
      transform_translate(model, &amount, TS_LOCAL);*/

    struct Sprite_Batch* batch = game_state->renderer->sprite_batch;

    sprite_batch_begin(batch);
    static struct Sprite sprite;

    sprite.vertices[0].position.x = 0.f;  sprite.vertices[0].position.y = 0.f;  
    sprite.vertices[1].position.x = 50.f; sprite.vertices[1].position.y = 0.f; 
    sprite.vertices[2].position.x = 0.f;  sprite.vertices[2].position.y = 50.f; 
    sprite.vertices[3].position.x = 0.f;  sprite.vertices[3].position.y = 50.f; 
    sprite.vertices[4].position.x = 50.f; sprite.vertices[4].position.y = 50.f;
    sprite.vertices[5].position.x = 50.f; sprite.vertices[5].position.y = 0.f; 

    sprite.vertices[0].uv.x = 0.f; sprite.vertices[0].uv.y = 0.f;
    sprite.vertices[1].uv.x = 1.f; sprite.vertices[1].uv.y = 0.f;
    sprite.vertices[2].uv.x = 0.f; sprite.vertices[2].uv.y = 1.f;
    sprite.vertices[3].uv.x = 0.f; sprite.vertices[3].uv.y = 1.f;
    sprite.vertices[4].uv.x = 1.f; sprite.vertices[4].uv.y = 1.f;
    sprite.vertices[5].uv.x = 1.f; sprite.vertices[5].uv.y = 0.f;

    sprite.vertices[0].color.x = 0.f; sprite.vertices[0].color.y = 0.f; sprite.vertices[0].color.z = 0.f; sprite.vertices[0].color.w = 1.f;
    sprite.vertices[1].color.x = 1.f; sprite.vertices[1].color.y = 0.f; sprite.vertices[1].color.z = 0.f; sprite.vertices[1].color.w = 1.f;
    sprite.vertices[2].color.x = 0.f; sprite.vertices[2].color.y = 1.f; sprite.vertices[2].color.z = 0.f; sprite.vertices[2].color.w = 1.f;
    sprite.vertices[3].color.x = 1.f; sprite.vertices[3].color.y = 1.f; sprite.vertices[3].color.z = 0.f; sprite.vertices[3].color.w = 1.f;
    sprite.vertices[4].color.x = 1.f; sprite.vertices[4].color.y = 1.f; sprite.vertices[4].color.z = 0.f; sprite.vertices[4].color.w = 1.f;
    sprite.vertices[5].color.x = 1.f; sprite.vertices[5].color.y = 1.f; sprite.vertices[5].color.z = 0.f; sprite.vertices[5].color.w = 1.f;

    sprite_batch_add_sprite(batch, &sprite);

    sprite_batch_end(batch);

    //Raycast test
    if(input_is_key_pressed(KEY_R))
    {
		/*Collision_Shape ray = platform->physics.cs_ray_create(20.f, true, true);
		  vec3 position = {0.f, 0.f, 0.f};
		  vec3 direction = {0.f, 0.f, 0.f};
		  transform_get_absolute_forward(player_entity, &direction);
		  transform_get_absolute_position(player_entity, &position);
		  struct Raycast_Hit hit;
		  if(platform->physics.cs_ray_cast(ray, &hit, position.x, position.y, position.z, direction.x, direction.y, direction.z))
		  {
		  struct Entity* entity_hit = entity_get(hit.entity_id);
		  log_message("Ray hit %s", entity_hit->name);
		  }
		  else
		  {
		  log_message("Ray didn't hit anything!");
		  }
		  platform->physics.cs_remove(ray);*/
    }

    // Immediate geometry test
    vec3 im_position = { 0.f, 20.f, 0.f };
    vec3 im_scale    = { 1.f, 1.f, 1.f };
    quat im_rot      = { 0.f, 0.f, 0.f, 1.f };
    vec4 im_color    = { 0.f, 1.f, 1.f, 1.f };
    quat_identity(&im_rot);
    im_begin(im_position, im_rot, im_scale, im_color, GDM_LINES, 1);

    im_pos(0.f, 0.f, 0.f);
    im_pos(100.f, 100.f, 10.f);

    im_end();

    im_position.x = -10;

    im_color.x = 1.f;
    im_color.y = 0.f;
    im_begin(im_position, im_rot, im_scale, im_color, GL_TRIANGLES, 1);

    float length = 200.f;

    //Front
    im_pos(0.f,  0.f,  0.f);
    im_pos(0.f,  length, 0.f);
    im_pos(length, length, 0.f);
    im_pos(length, length, 0.f);
    im_pos(length,  0.f, 0.f);
    im_pos( 0.f,  0.f, 0.f);

    //Back
    im_pos(0.f,  0.f,  length);
    im_pos(0.f,  length, length);
    im_pos(length, length, length);
    im_pos(length, length, length);
    im_pos(length,  0.f, length);
    im_pos( 0.f,  0.f, length);

    //Left
    im_pos(0.f,  0.f,  0.f);
    im_pos(0.f,  0.f, length);
    im_pos(0.f,  length, length);
    im_pos(0.f,  length, length);
    im_pos(0.f, length, 0.f);
    im_pos(0.f,  0.f, length);

    //Right
    im_pos(length,  0.f,  0.f);
    im_pos(length,  0.f, length);
    im_pos(length,  length, length);
    im_pos(length,  length, length);
    im_pos(length, length, 0.f);
    im_pos(length,  0.f, length);

    im_end();

    im_position.x = -30.f;
    im_begin(im_position, im_rot, im_scale, im_color, GL_LINES, 1);

    im_pos(0.f, 0.f, 0.f);
    im_pos(0.f, 0.f, 10.f);

    im_pos(0.f, 0.f, 10.f);
    im_pos(0.f, 10.f, 10.f);

    im_pos(0.f, 10.f, 10.f);
    im_pos(0.f, 10.f, 0.f);

    im_pos(0.f, 10.f, 0.f);
    im_pos(0.f, 0.f, 0.f);

    im_end();

    vec4 prim_color = {1.f, 1.f, 0.f, 1.f};
    im_box(5.f, 2.f, 10.f, im_position, im_rot, prim_color, GDM_TRIANGLES, 1);

    for(int i = 0; i < 10; i++)
    {
		im_position.x += i * 2.f;
		im_sphere(2.f, im_position, im_rot, prim_color, GDM_TRIANGLES, 1);
    }
}

bool game_run(void)
{
    uint32 previous_time       = platform_ticks_get();
	float  accumulator         = 0.f;

    while(!game_state->quit)
    {
        uint32 current_time = platform_ticks_get();
		float frame_time = (float)(current_time - previous_time) / 1000.f;
		previous_time = current_time;
		if(frame_time > MAX_FRAME_TIME) frame_time = (1.f / 60.f); /* To deal with resuming from breakpoint we artificially set delta time */
		accumulator += frame_time;

		struct Gui* gui = game_state->game_mode == GAME_MODE_EDITOR ? game_state->gui_editor : game_state->gui_game->gui;
		gui_input_begin(gui);
		event_manager_poll_events(game_state->event_manager);
		gui_input_end(gui);

		struct Game_State* game_state = game_state_get();
		while(accumulator >= game_state->fixed_delta_time)
		{
			game_update_physics(game_state->fixed_delta_time);
			accumulator -= game_state->fixed_delta_time;
		}
		
		game_update(frame_time);
		game_post_update(frame_time);
		game_render();
		window_swap_buffers(game_state->window);
    }
    return true;
}

void game_update(float dt)
{	
	static int   frames = 0;
	static int   fps = 0;
	static float seconds = 0.f;
	seconds += dt;
	frames++;
	if(seconds >= 1.f)
	{
		fps = frames;
		seconds = 0.f;
		frames = 0;
	}
	debug_vars_show_float("FPS", fps);

    if(input_map_state_get("Window_Fullscreen", KS_RELEASED)) window_fullscreen_set(game_state->window, true);
    if(input_map_state_get("Window_Maximize",   KS_RELEASED)) window_fullscreen_set(game_state->window, false);
    if(input_map_state_get("Console_Toggle",    KS_RELEASED)) console_toggle(game_state->console);
    if(input_map_state_get("Debug_Vars_Toggle", KS_RELEASED)) game_state->debug_vars->visible = !game_state->debug_vars->visible;
	if(input_map_state_get("Debug_Vars_Cycle",  KS_RELEASED)) debug_vars_cycle_location(game_state->debug_vars);
    if(input_map_state_get("Editor_Toggle",     KS_RELEASED)) 
    {
		if(game_state->game_mode == GAME_MODE_EDITOR)
			game_mode_set(GAME_MODE_GAME);
		else if(game_state->game_mode == GAME_MODE_GAME)
			game_mode_set(GAME_MODE_EDITOR);
    }
	if(input_map_state_get("Pause", KS_RELEASED))
	{
		if(game_state->game_mode == GAME_MODE_PAUSE)
			game_mode_set(GAME_MODE_GAME);
		else if(game_state->game_mode == GAME_MODE_GAME)
			game_mode_set(GAME_MODE_PAUSE);
	}

    //game_debug(dt);
    //game_debug_gui(dt);
    console_update(game_state->console, game_state->game_mode == GAME_MODE_EDITOR ? game_state->gui_editor : game_state->gui_game->gui, dt);
	if(game_state->update_scene)
		scene_update(game_state->scene, dt);

    if(game_state->game_mode == GAME_MODE_EDITOR)
		editor_update(game_state->editor, dt);
	else
		gui_game_update(game_state->gui_game, dt);
}

void game_mode_set(int new_mode)
{
	if(new_mode == game_state->game_mode)
		return;

	if(new_mode == GAME_MODE_EDITOR)
	{
		game_state->game_mode = new_mode;
		game_state->scene->active_camera_index = CAM_EDITOR;
		input_mouse_mode_set(MM_NORMAL);
		sound_pause_all(game_state->sound, true);
		int width = 0, height = 0;
		window_get_drawable_size(game_state_get()->window, &width, &height);
		platform_mouse_position_set(game_state_get()->window, width / 2, height / 2);
	}
	else if(new_mode == GAME_MODE_PAUSE)
	{
		game_state->game_mode = new_mode;
		game_state->scene->active_camera_index = CAM_GAME;
		sound_pause_all(game_state->sound, true);
		input_mouse_mode_set(MM_NORMAL);
		int width = 0, height = 0;
		window_get_drawable_size(game_state_get()->window, &width, &height);
		platform_mouse_position_set(game_state_get()->window, width / 2, height / 2);
	}
	else if(new_mode == GAME_MODE_GAME)
	{
		game_state->game_mode = new_mode;
		game_state->scene->active_camera_index = CAM_GAME;
		game_state->game_mode = GAME_MODE_GAME;
		sound_pause_all(game_state->sound, false);
	}
}

void game_post_update(float dt)
{
    input_post_update();
    scene_post_update(game_state->scene);
    sound_update_3d(game_state->sound);
	debug_vars_post_update(game_state->debug_vars);
	editor_post_update(game_state->editor);
}

void game_debug_gui(float dt)
{
    struct Gui* gui_state = game_state->gui_editor;
    struct nk_context* ctx = &gui_state->context;
	
	/* window flags */
	static int show_menu = nk_true;
	static int titlebar = nk_true;
	static int border = nk_true;
	static int resize = nk_true;
	static int movable = nk_true;
	static int no_scrollbar = nk_false;
	static int scale_left = nk_false;
	static nk_flags window_flags = 0;
	static int minimizable = nk_true;

	/* popups */
	static enum nk_style_header_align header_align = NK_HEADER_RIGHT;
	static int show_app_about = nk_false;

	/* window flags */
	window_flags = 0;
	ctx->style.window.header.align = header_align;
	if(border) window_flags |= NK_WINDOW_BORDER;
	if(resize) window_flags |= NK_WINDOW_SCALABLE;
	if(movable) window_flags |= NK_WINDOW_MOVABLE;
	if(no_scrollbar) window_flags |= NK_WINDOW_NO_SCROLLBAR;
	if(scale_left) window_flags |= NK_WINDOW_SCALE_LEFT;
	if(minimizable) window_flags |= NK_WINDOW_MINIMIZABLE;

	if(nk_begin(ctx, "Overview", nk_rect(10, 10, 400, 600), window_flags))
	{
		if(show_menu)
		{
			/* menubar */
			enum menu_states { MENU_DEFAULT, MENU_WINDOWS };
			static nk_size mprog = 60;
			static int mslider = 10;
			static int mcheck = nk_true;
			nk_menubar_begin(ctx);

			/* menu #1 */
			nk_layout_row_begin(ctx, NK_STATIC, 25, 5);
			nk_layout_row_push(ctx, 45);
			if(nk_menu_begin_label(ctx, "MENU", NK_TEXT_LEFT, nk_vec2(120, 200)))
			{
				static size_t prog = 40;
				static int slider = 10;
				static int check = nk_true;
				nk_layout_row_dynamic(ctx, 25, 1);
				if(nk_menu_item_label(ctx, "Hide", NK_TEXT_LEFT))
					show_menu = nk_false;
				if(nk_menu_item_label(ctx, "About", NK_TEXT_LEFT))
					show_app_about = nk_true;
				nk_progress(ctx, &prog, 100, NK_MODIFIABLE);
				nk_slider_int(ctx, 0, &slider, 16, 1);
				nk_checkbox_label(ctx, "check", &check);
				nk_menu_end(ctx);
			}
			/* menu #2 */
			nk_layout_row_push(ctx, 60);
			if(nk_menu_begin_label(ctx, "ADVANCED", NK_TEXT_LEFT, nk_vec2(200, 600)))
			{
				enum menu_state { MENU_NONE, MENU_FILE, MENU_EDIT, MENU_VIEW, MENU_CHART };
				static enum menu_state menu_state = MENU_NONE;
				enum nk_collapse_states state;

				state = (menu_state == MENU_FILE) ? NK_MAXIMIZED : NK_MINIMIZED;
				if(nk_tree_state_push(ctx, NK_TREE_TAB, "FILE", &state)) {
					menu_state = MENU_FILE;
					nk_menu_item_label(ctx, "New", NK_TEXT_LEFT);
					nk_menu_item_label(ctx, "Open", NK_TEXT_LEFT);
					nk_menu_item_label(ctx, "Save", NK_TEXT_LEFT);
					nk_menu_item_label(ctx, "Close", NK_TEXT_LEFT);
					nk_menu_item_label(ctx, "Exit", NK_TEXT_LEFT);
					nk_tree_pop(ctx);
				}
				else menu_state = (menu_state == MENU_FILE) ? MENU_NONE : menu_state;

				state = (menu_state == MENU_EDIT) ? NK_MAXIMIZED : NK_MINIMIZED;
				if(nk_tree_state_push(ctx, NK_TREE_TAB, "EDIT", &state)) {
					menu_state = MENU_EDIT;
					nk_menu_item_label(ctx, "Copy", NK_TEXT_LEFT);
					nk_menu_item_label(ctx, "Delete", NK_TEXT_LEFT);
					nk_menu_item_label(ctx, "Cut", NK_TEXT_LEFT);
					nk_menu_item_label(ctx, "Paste", NK_TEXT_LEFT);
					nk_tree_pop(ctx);
				}
				else menu_state = (menu_state == MENU_EDIT) ? MENU_NONE : menu_state;

				state = (menu_state == MENU_VIEW) ? NK_MAXIMIZED : NK_MINIMIZED;
				if(nk_tree_state_push(ctx, NK_TREE_TAB, "VIEW", &state)) {
					menu_state = MENU_VIEW;
					nk_menu_item_label(ctx, "About", NK_TEXT_LEFT);
					nk_menu_item_label(ctx, "Options", NK_TEXT_LEFT);
					nk_menu_item_label(ctx, "Customize", NK_TEXT_LEFT);
					nk_tree_pop(ctx);
				}
				else menu_state = (menu_state == MENU_VIEW) ? MENU_NONE : menu_state;

				state = (menu_state == MENU_CHART) ? NK_MAXIMIZED : NK_MINIMIZED;
				if(nk_tree_state_push(ctx, NK_TREE_TAB, "CHART", &state)) {
					size_t i = 0;
					const float values[] = { 26.0f,13.0f,30.0f,15.0f,25.0f,10.0f,20.0f,40.0f,12.0f,8.0f,22.0f,28.0f };
					menu_state = MENU_CHART;
					nk_layout_row_dynamic(ctx, 150, 1);
					nk_chart_begin(ctx, NK_CHART_COLUMN, NK_LEN(values), 0, 50);
					for(i = 0; i < NK_LEN(values); ++i)
						nk_chart_push(ctx, values[i]);
					nk_chart_end(ctx);
					nk_tree_pop(ctx);
				}
				else menu_state = (menu_state == MENU_CHART) ? MENU_NONE : menu_state;
				nk_menu_end(ctx);
			}
			/* menu widgets */
			nk_layout_row_push(ctx, 70);
			nk_progress(ctx, &mprog, 100, NK_MODIFIABLE);
			nk_slider_int(ctx, 0, &mslider, 16, 1);
			nk_checkbox_label(ctx, "check", &mcheck);
			nk_menubar_end(ctx);
		}

		if(show_app_about)
		{
			/* about popup */
			static struct nk_rect s = { 20, 100, 300, 190 };
			if(nk_popup_begin(ctx, NK_POPUP_STATIC, "About", NK_WINDOW_CLOSABLE, s))
			{
				nk_layout_row_dynamic(ctx, 20, 1);
				nk_label(ctx, "Nuklear", NK_TEXT_LEFT);
				nk_label(ctx, "By Micha Mettke", NK_TEXT_LEFT);
				nk_label(ctx, "nuklear is licensed under the public domain License.", NK_TEXT_LEFT);
				nk_popup_end(ctx);
			}
			else show_app_about = nk_false;
		}

		/* window flags */
		if(nk_tree_push(ctx, NK_TREE_TAB, "Window", NK_MINIMIZED)) {
			nk_layout_row_dynamic(ctx, 30, 2);
			nk_checkbox_label(ctx, "Titlebar", &titlebar);
			nk_checkbox_label(ctx, "Menu", &show_menu);
			nk_checkbox_label(ctx, "Border", &border);
			nk_checkbox_label(ctx, "Resizable", &resize);
			nk_checkbox_label(ctx, "Movable", &movable);
			nk_checkbox_label(ctx, "No Scrollbar", &no_scrollbar);
			nk_checkbox_label(ctx, "Minimizable", &minimizable);
			nk_checkbox_label(ctx, "Scale Left", &scale_left);
			nk_tree_pop(ctx);
		}

		if(nk_tree_push(ctx, NK_TREE_TAB, "Widgets", NK_MINIMIZED))
		{
			enum options { A, B, C };
			static int checkbox;
			static int option;
			if(nk_tree_push(ctx, NK_TREE_NODE, "Text", NK_MINIMIZED))
			{
				/* Text Widgets */
				nk_layout_row_dynamic(ctx, 20, 1);
				nk_label(ctx, "Label aligned left", NK_TEXT_LEFT);
				nk_label(ctx, "Label aligned centered", NK_TEXT_CENTERED);
				nk_label(ctx, "Label aligned right", NK_TEXT_RIGHT);
				nk_label_colored(ctx, "Blue text", NK_TEXT_LEFT, nk_rgb(0, 0, 255));
				nk_label_colored(ctx, "Yellow text", NK_TEXT_LEFT, nk_rgb(255, 255, 0));
				nk_text(ctx, "Text without /0", 15, NK_TEXT_RIGHT);

				nk_layout_row_static(ctx, 100, 200, 1);
				nk_label_wrap(ctx, "This is a very long line to hopefully get this text to be wrapped into multiple lines to show line wrapping");
				nk_layout_row_dynamic(ctx, 100, 1);
				nk_label_wrap(ctx, "This is another long text to show dynamic window changes on multiline text");
				nk_tree_pop(ctx);
			}

			if(nk_tree_push(ctx, NK_TREE_NODE, "Button", NK_MINIMIZED))
			{
				/* Buttons Widgets */
				nk_layout_row_static(ctx, 30, 100, 3);
				if(nk_button_label(ctx, "Button"))
					fprintf(stdout, "Button pressed!\n");
				nk_button_set_behavior(ctx, NK_BUTTON_REPEATER);
				if(nk_button_label(ctx, "Repeater"))
					fprintf(stdout, "Repeater is being pressed!\n");
				nk_button_set_behavior(ctx, NK_BUTTON_DEFAULT);
				nk_button_color(ctx, nk_rgb(0, 0, 255));

				nk_layout_row_static(ctx, 25, 25, 8);
				nk_button_symbol(ctx, NK_SYMBOL_CIRCLE_SOLID);
				nk_button_symbol(ctx, NK_SYMBOL_CIRCLE_OUTLINE);
				nk_button_symbol(ctx, NK_SYMBOL_RECT_SOLID);
				nk_button_symbol(ctx, NK_SYMBOL_RECT_OUTLINE);
				nk_button_symbol(ctx, NK_SYMBOL_TRIANGLE_UP);
				nk_button_symbol(ctx, NK_SYMBOL_TRIANGLE_DOWN);
				nk_button_symbol(ctx, NK_SYMBOL_TRIANGLE_LEFT);
				nk_button_symbol(ctx, NK_SYMBOL_TRIANGLE_RIGHT);

				nk_layout_row_static(ctx, 30, 100, 2);
				nk_button_symbol_label(ctx, NK_SYMBOL_TRIANGLE_LEFT, "prev", NK_TEXT_RIGHT);
				nk_button_symbol_label(ctx, NK_SYMBOL_TRIANGLE_RIGHT, "next", NK_TEXT_LEFT);
				nk_tree_pop(ctx);
			}

			if(nk_tree_push(ctx, NK_TREE_NODE, "Basic", NK_MINIMIZED))
			{
				/* Basic widgets */
				static int int_slider = 5;
				static float float_slider = 2.5f;
				static size_t prog_value = 40;
				static float property_float = 2;
				static int property_int = 10;
				static int property_neg = 10;

				static float range_float_min = 0;
				static float range_float_max = 100;
				static float range_float_value = 50;
				static int range_int_min = 0;
				static int range_int_value = 2048;
				static int range_int_max = 4096;
				static const float ratio[] = { 120, 150 };

				nk_layout_row_static(ctx, 30, 100, 1);
				nk_checkbox_label(ctx, "Checkbox", &checkbox);

				nk_layout_row_static(ctx, 30, 80, 3);
				option = nk_option_label(ctx, "optionA", option == A) ? A : option;
				option = nk_option_label(ctx, "optionB", option == B) ? B : option;
				option = nk_option_label(ctx, "optionC", option == C) ? C : option;

				nk_layout_row(ctx, NK_STATIC, 30, 2, ratio);
				nk_labelf(ctx, NK_TEXT_LEFT, "Slider int");
				nk_slider_int(ctx, 0, &int_slider, 10, 1);

				nk_label(ctx, "Slider float", NK_TEXT_LEFT);
				nk_slider_float(ctx, 0, &float_slider, 5.0, 0.5f);
				nk_labelf(ctx, NK_TEXT_LEFT, "Progressbar: %d", prog_value);
				nk_progress(ctx, &prog_value, 100, NK_MODIFIABLE);

				nk_layout_row(ctx, NK_STATIC, 25, 2, ratio);
				nk_label(ctx, "Property float:", NK_TEXT_LEFT);
				nk_property_float(ctx, "Float:", 0, &property_float, 64.0f, 0.1f, 0.2f);
				nk_label(ctx, "Property int:", NK_TEXT_LEFT);
				nk_property_int(ctx, "Int:", 0, &property_int, 100.0f, 1, 1);
				nk_label(ctx, "Property neg:", NK_TEXT_LEFT);
				nk_property_int(ctx, "Neg:", -10, &property_neg, 10, 1, 1);

				nk_layout_row_dynamic(ctx, 25, 1);
				nk_label(ctx, "Range:", NK_TEXT_LEFT);
				nk_layout_row_dynamic(ctx, 25, 3);
				nk_property_float(ctx, "#min:", 0, &range_float_min, range_float_max, 1.0f, 0.2f);
				nk_property_float(ctx, "#float:", range_float_min, &range_float_value, range_float_max, 1.0f, 0.2f);
				nk_property_float(ctx, "#max:", range_float_min, &range_float_max, 100, 1.0f, 0.2f);

				nk_property_int(ctx, "#min:", INT_MIN, &range_int_min, range_int_max, 1, 10);
				nk_property_int(ctx, "#neg:", range_int_min, &range_int_value, range_int_max, 1, 10);
				nk_property_int(ctx, "#max:", range_int_min, &range_int_max, INT_MAX, 1, 10);

				nk_tree_pop(ctx);
			}

			if(nk_tree_push(ctx, NK_TREE_NODE, "Inactive", NK_MINIMIZED))
			{
				static int inactive = 1;
				nk_layout_row_dynamic(ctx, 30, 1);
				nk_checkbox_label(ctx, "Inactive", &inactive);

				nk_layout_row_static(ctx, 30, 80, 1);
				if(inactive) {
					struct nk_style_button button;
					button = ctx->style.button;
					ctx->style.button.normal = nk_style_item_color(nk_rgb(40, 40, 40));
					ctx->style.button.hover = nk_style_item_color(nk_rgb(40, 40, 40));
					ctx->style.button.active = nk_style_item_color(nk_rgb(40, 40, 40));
					ctx->style.button.border_color = nk_rgb(60, 60, 60);
					ctx->style.button.text_background = nk_rgb(60, 60, 60);
					ctx->style.button.text_normal = nk_rgb(60, 60, 60);
					ctx->style.button.text_hover = nk_rgb(60, 60, 60);
					ctx->style.button.text_active = nk_rgb(60, 60, 60);
					nk_button_label(ctx, "button");
					ctx->style.button = button;
				}
				else if(nk_button_label(ctx, "button"))
					fprintf(stdout, "button pressed\n");
				nk_tree_pop(ctx);
			}


			if(nk_tree_push(ctx, NK_TREE_NODE, "Selectable", NK_MINIMIZED))
			{
				if(nk_tree_push(ctx, NK_TREE_NODE, "List", NK_MINIMIZED))
				{
					static int selected[4] = { nk_false, nk_false, nk_true, nk_false };
					nk_layout_row_static(ctx, 18, 100, 1);
					nk_selectable_label(ctx, "Selectable", NK_TEXT_LEFT, &selected[0]);
					nk_selectable_label(ctx, "Selectable", NK_TEXT_LEFT, &selected[1]);
					nk_label(ctx, "Not Selectable", NK_TEXT_LEFT);
					nk_selectable_label(ctx, "Selectable", NK_TEXT_LEFT, &selected[2]);
					nk_selectable_label(ctx, "Selectable", NK_TEXT_LEFT, &selected[3]);
					nk_tree_pop(ctx);
				}
				if(nk_tree_push(ctx, NK_TREE_NODE, "Grid", NK_MINIMIZED))
				{
					int i;
					static int selected[16] = { 1,0,0,0, 0,1,0,0, 0,0,1,0, 0,0,0,1 };
					nk_layout_row_static(ctx, 50, 50, 4);
					for(i = 0; i < 16; ++i) {
						if(nk_selectable_label(ctx, "Z", NK_TEXT_CENTERED, &selected[i])) {
							int x = (i % 4), y = i / 4;
							if(x > 0) selected[i - 1] ^= 1;
							if(x < 3) selected[i + 1] ^= 1;
							if(y > 0) selected[i - 4] ^= 1;
							if(y < 3) selected[i + 4] ^= 1;
						}
					}
					nk_tree_pop(ctx);
				}
				nk_tree_pop(ctx);
			}

			if(nk_tree_push(ctx, NK_TREE_NODE, "Combo", NK_MINIMIZED))
			{
				/* Combobox Widgets
				 * In this library comboboxes are not limited to being a popup
				 * list of selectable text. Instead it is a abstract concept of
				 * having something that is *selected* or displayed, a popup window
				 * which opens if something needs to be modified and the content
				 * of the popup which causes the *selected* or displayed value to
				 * change or if wanted close the combobox.
				 *
				 * While strange at first handling comboboxes in a abstract way
				 * solves the problem of overloaded window content. For example
				 * changing a color value requires 4 value modifier (slider, property,...)
				 * for RGBA then you need a label and ways to display the current color.
				 * If you want to go fancy you even add rgb and hsv ratio boxes.
				 * While fine for one color if you have a lot of them it because
				 * tedious to look at and quite wasteful in space. You could add
				 * a popup which modifies the color but this does not solve the
				 * fact that it still requires a lot of cluttered space to do.
				 *
				 * In these kind of instance abstract comboboxes are quite handy. All
				 * value modifiers are hidden inside the combobox popup and only
				 * the color is shown if not open. This combines the clarity of the
				 * popup with the ease of use of just using the space for modifiers.
				 *
				 * Other instances are for example time and especially date picker,
				 * which only show the currently activated time/data and hide the
				 * selection logic inside the combobox popup.
				 */
				static float chart_selection = 8.0f;
				static int current_weapon = 0;
				static int check_values[5];
				static float position[3];
				static struct nk_color combo_color = { 130, 50, 50, 255 };
				static struct nk_colorf combo_color2 = { 0.509f, 0.705f, 0.2f, 1.0f };
				static size_t prog_a = 20, prog_b = 40, prog_c = 10, prog_d = 90;
				static const char *weapons[] = { "Fist","Pistol","Shotgun","Plasma","BFG" };

				char buffer[64];
				size_t sum = 0;

				/* default combobox */
				nk_layout_row_static(ctx, 25, 200, 1);
				current_weapon = nk_combo(ctx, weapons, NK_LEN(weapons), current_weapon, 25, nk_vec2(200, 200));

				/* slider color combobox */
				if(nk_combo_begin_color(ctx, combo_color, nk_vec2(200, 200))) {
					float ratios[] = { 0.15f, 0.85f };
					nk_layout_row(ctx, NK_DYNAMIC, 30, 2, ratios);
					nk_label(ctx, "R:", NK_TEXT_LEFT);
					combo_color.r = (nk_byte)nk_slide_int(ctx, 0, combo_color.r, 255, 5);
					nk_label(ctx, "G:", NK_TEXT_LEFT);
					combo_color.g = (nk_byte)nk_slide_int(ctx, 0, combo_color.g, 255, 5);
					nk_label(ctx, "B:", NK_TEXT_LEFT);
					combo_color.b = (nk_byte)nk_slide_int(ctx, 0, combo_color.b, 255, 5);
					nk_label(ctx, "A:", NK_TEXT_LEFT);
					combo_color.a = (nk_byte)nk_slide_int(ctx, 0, combo_color.a, 255, 5);
					nk_combo_end(ctx);
				}
				/* complex color combobox */
				if(nk_combo_begin_color(ctx, nk_rgb_cf(combo_color2), nk_vec2(200, 400))) {
					enum color_mode { COL_RGB, COL_HSV };
					static int col_mode = COL_RGB;
#ifndef DEMO_DO_NOT_USE_COLOR_PICKER
					nk_layout_row_dynamic(ctx, 120, 1);
					combo_color2 = nk_color_picker(ctx, combo_color2, NK_RGBA);
#endif

					nk_layout_row_dynamic(ctx, 25, 2);
					col_mode = nk_option_label(ctx, "RGB", col_mode == COL_RGB) ? COL_RGB : col_mode;
					col_mode = nk_option_label(ctx, "HSV", col_mode == COL_HSV) ? COL_HSV : col_mode;

					nk_layout_row_dynamic(ctx, 25, 1);
					if(col_mode == COL_RGB) {
						combo_color2.r = nk_propertyf(ctx, "#R:", 0, combo_color2.r, 1.0f, 0.01f, 0.005f);
						combo_color2.g = nk_propertyf(ctx, "#G:", 0, combo_color2.g, 1.0f, 0.01f, 0.005f);
						combo_color2.b = nk_propertyf(ctx, "#B:", 0, combo_color2.b, 1.0f, 0.01f, 0.005f);
						combo_color2.a = nk_propertyf(ctx, "#A:", 0, combo_color2.a, 1.0f, 0.01f, 0.005f);
					}
					else {
						float hsva[4];
						nk_colorf_hsva_fv(hsva, combo_color2);
						hsva[0] = nk_propertyf(ctx, "#H:", 0, hsva[0], 1.0f, 0.01f, 0.05f);
						hsva[1] = nk_propertyf(ctx, "#S:", 0, hsva[1], 1.0f, 0.01f, 0.05f);
						hsva[2] = nk_propertyf(ctx, "#V:", 0, hsva[2], 1.0f, 0.01f, 0.05f);
						hsva[3] = nk_propertyf(ctx, "#A:", 0, hsva[3], 1.0f, 0.01f, 0.05f);
						combo_color2 = nk_hsva_colorfv(hsva);
					}
					nk_combo_end(ctx);
				}
				/* progressbar combobox */
				sum = prog_a + prog_b + prog_c + prog_d;
				sprintf(buffer, "%lu", sum);
				if(nk_combo_begin_label(ctx, buffer, nk_vec2(200, 200))) {
					nk_layout_row_dynamic(ctx, 30, 1);
					nk_progress(ctx, &prog_a, 100, NK_MODIFIABLE);
					nk_progress(ctx, &prog_b, 100, NK_MODIFIABLE);
					nk_progress(ctx, &prog_c, 100, NK_MODIFIABLE);
					nk_progress(ctx, &prog_d, 100, NK_MODIFIABLE);
					nk_combo_end(ctx);
				}

				/* checkbox combobox */
				sum = (size_t)(check_values[0] + check_values[1] + check_values[2] + check_values[3] + check_values[4]);
				sprintf(buffer, "%lu", sum);
				if(nk_combo_begin_label(ctx, buffer, nk_vec2(200, 200))) {
					nk_layout_row_dynamic(ctx, 30, 1);
					nk_checkbox_label(ctx, weapons[0], &check_values[0]);
					nk_checkbox_label(ctx, weapons[1], &check_values[1]);
					nk_checkbox_label(ctx, weapons[2], &check_values[2]);
					nk_checkbox_label(ctx, weapons[3], &check_values[3]);
					nk_combo_end(ctx);
				}

				/* complex text combobox */
				sprintf(buffer, "%.2f, %.2f, %.2f", position[0], position[1], position[2]);
				if(nk_combo_begin_label(ctx, buffer, nk_vec2(200, 200))) {
					nk_layout_row_dynamic(ctx, 25, 1);
					nk_property_float(ctx, "#X:", -1024.0f, &position[0], 1024.0f, 1, 0.5f);
					nk_property_float(ctx, "#Y:", -1024.0f, &position[1], 1024.0f, 1, 0.5f);
					nk_property_float(ctx, "#Z:", -1024.0f, &position[2], 1024.0f, 1, 0.5f);
					nk_combo_end(ctx);
				}

				/* chart combobox */
				sprintf(buffer, "%.1f", chart_selection);
				if(nk_combo_begin_label(ctx, buffer, nk_vec2(200, 250))) {
					size_t i = 0;
					static const float values[] = { 26.0f,13.0f,30.0f,15.0f,25.0f,10.0f,20.0f,40.0f, 12.0f, 8.0f, 22.0f, 28.0f, 5.0f };
					nk_layout_row_dynamic(ctx, 150, 1);
					nk_chart_begin(ctx, NK_CHART_COLUMN, NK_LEN(values), 0, 50);
					for(i = 0; i < NK_LEN(values); ++i) {
						nk_flags res = nk_chart_push(ctx, values[i]);
						if(res & NK_CHART_CLICKED) {
							chart_selection = values[i];
							nk_combo_close(ctx);
						}
					}
					nk_chart_end(ctx);
					nk_combo_end(ctx);
				}

				{
					static int time_selected = 0;
					static int date_selected = 0;
					static struct tm sel_time;
					static struct tm sel_date;
					if(!time_selected || !date_selected) {
						/* keep time and date updated if nothing is selected */
						time_t cur_time = time(0);
						struct tm *n = localtime(&cur_time);
						if(!time_selected)
							memcpy(&sel_time, n, sizeof(struct tm));
						if(!date_selected)
							memcpy(&sel_date, n, sizeof(struct tm));
					}

					/* time combobox */
					sprintf(buffer, "%02d:%02d:%02d", sel_time.tm_hour, sel_time.tm_min, sel_time.tm_sec);
					if(nk_combo_begin_label(ctx, buffer, nk_vec2(200, 250))) {
						time_selected = 1;
						nk_layout_row_dynamic(ctx, 25, 1);
						sel_time.tm_sec = nk_propertyi(ctx, "#S:", 0, sel_time.tm_sec, 60, 1, 1);
						sel_time.tm_min = nk_propertyi(ctx, "#M:", 0, sel_time.tm_min, 60, 1, 1);
						sel_time.tm_hour = nk_propertyi(ctx, "#H:", 0, sel_time.tm_hour, 23, 1, 1);
						nk_combo_end(ctx);
					}

					/* date combobox */
					sprintf(buffer, "%02d-%02d-%02d", sel_date.tm_mday, sel_date.tm_mon + 1, sel_date.tm_year + 1900);
					if(nk_combo_begin_label(ctx, buffer, nk_vec2(350, 400)))
					{
						int i = 0;
						const char *month[] = { "January", "February", "March",
							"April", "May", "June", "July", "August", "September",
							"October", "November", "December" };
						const char *week_days[] = { "SUN", "MON", "TUE", "WED", "THU", "FRI", "SAT" };
						const int month_days[] = { 31,28,31,30,31,30,31,31,30,31,30,31 };
						int year = sel_date.tm_year + 1900;
						int leap_year = (!(year % 4) && ((year % 100))) || !(year % 400);
						int days = (sel_date.tm_mon == 1) ?
							month_days[sel_date.tm_mon] + leap_year :
							month_days[sel_date.tm_mon];

						/* header with month and year */
						date_selected = 1;
						nk_layout_row_begin(ctx, NK_DYNAMIC, 20, 3);
						nk_layout_row_push(ctx, 0.05f);
						if(nk_button_symbol(ctx, NK_SYMBOL_TRIANGLE_LEFT)) {
							if(sel_date.tm_mon == 0) {
								sel_date.tm_mon = 11;
								sel_date.tm_year = NK_MAX(0, sel_date.tm_year - 1);
							}
							else sel_date.tm_mon--;
						}
						nk_layout_row_push(ctx, 0.9f);
						sprintf(buffer, "%s %d", month[sel_date.tm_mon], year);
						nk_label(ctx, buffer, NK_TEXT_CENTERED);
						nk_layout_row_push(ctx, 0.05f);
						if(nk_button_symbol(ctx, NK_SYMBOL_TRIANGLE_RIGHT)) {
							if(sel_date.tm_mon == 11) {
								sel_date.tm_mon = 0;
								sel_date.tm_year++;
							}
							else sel_date.tm_mon++;
						}
						nk_layout_row_end(ctx);

						/* good old week day formula (double because precision) */
						{int year_n = (sel_date.tm_mon < 2) ? year - 1 : year;
						int y = year_n % 100;
						int c = year_n / 100;
						int y4 = (int)((float)y / 4);
						int c4 = (int)((float)c / 4);
						int m = (int)(2.6 * (double)(((sel_date.tm_mon + 10) % 12) + 1) - 0.2);
						int week_day = (((1 + m + y + y4 + c4 - 2 * c) % 7) + 7) % 7;

						/* weekdays  */
						nk_layout_row_dynamic(ctx, 35, 7);
						for(i = 0; i < (int)NK_LEN(week_days); ++i)
							nk_label(ctx, week_days[i], NK_TEXT_CENTERED);

						/* days  */
						if(week_day > 0) nk_spacing(ctx, week_day);
						for(i = 1; i <= days; ++i) {
							sprintf(buffer, "%d", i);
							if(nk_button_label(ctx, buffer)) {
								sel_date.tm_mday = i;
								nk_combo_close(ctx);
							}
						}}
						nk_combo_end(ctx);
					}
				}

				nk_tree_pop(ctx);
			}

			if(nk_tree_push(ctx, NK_TREE_NODE, "Input", NK_MINIMIZED))
			{
				static const float ratio[] = { 120, 150 };
				static char field_buffer[64];
				static char text[9][64];
				static int text_len[9];
				static char box_buffer[512];
				static int field_len;
				static int box_len;
				nk_flags active;

				nk_layout_row(ctx, NK_STATIC, 25, 2, ratio);
				nk_label(ctx, "Default:", NK_TEXT_LEFT);

				nk_edit_string(ctx, NK_EDIT_SIMPLE, text[0], &text_len[0], 64, nk_filter_default);
				nk_label(ctx, "Int:", NK_TEXT_LEFT);
				nk_edit_string(ctx, NK_EDIT_SIMPLE, text[1], &text_len[1], 64, nk_filter_decimal);
				nk_label(ctx, "Float:", NK_TEXT_LEFT);
				nk_edit_string(ctx, NK_EDIT_SIMPLE, text[2], &text_len[2], 64, nk_filter_float);
				nk_label(ctx, "Hex:", NK_TEXT_LEFT);
				nk_edit_string(ctx, NK_EDIT_SIMPLE, text[4], &text_len[4], 64, nk_filter_hex);
				nk_label(ctx, "Octal:", NK_TEXT_LEFT);
				nk_edit_string(ctx, NK_EDIT_SIMPLE, text[5], &text_len[5], 64, nk_filter_oct);
				nk_label(ctx, "Binary:", NK_TEXT_LEFT);
				nk_edit_string(ctx, NK_EDIT_SIMPLE, text[6], &text_len[6], 64, nk_filter_binary);

				nk_label(ctx, "Password:", NK_TEXT_LEFT);
				{
					int i = 0;
					int old_len = text_len[8];
					char buffer[64];
					for(i = 0; i < text_len[8]; ++i) buffer[i] = '*';
					nk_edit_string(ctx, NK_EDIT_FIELD, buffer, &text_len[8], 64, nk_filter_default);
					if(old_len < text_len[8])
						memcpy(&text[8][old_len], &buffer[old_len], (nk_size)(text_len[8] - old_len));
				}

				nk_label(ctx, "Field:", NK_TEXT_LEFT);
				nk_edit_string(ctx, NK_EDIT_FIELD, field_buffer, &field_len, 64, nk_filter_default);

				nk_label(ctx, "Box:", NK_TEXT_LEFT);
				nk_layout_row_static(ctx, 180, 278, 1);
				nk_edit_string(ctx, NK_EDIT_BOX, box_buffer, &box_len, 512, nk_filter_default);

				nk_layout_row(ctx, NK_STATIC, 25, 2, ratio);
				active = nk_edit_string(ctx, NK_EDIT_FIELD | NK_EDIT_SIG_ENTER, text[7], &text_len[7], 64, nk_filter_ascii);
				if(nk_button_label(ctx, "Submit") ||
					(active & NK_EDIT_COMMITED))
				{
					text[7][text_len[7]] = '\n';
					text_len[7]++;
					memcpy(&box_buffer[box_len], &text[7], (nk_size)text_len[7]);
					box_len += text_len[7];
					text_len[7] = 0;
				}
				nk_tree_pop(ctx);
			}
			nk_tree_pop(ctx);
		}

		if(nk_tree_push(ctx, NK_TREE_TAB, "Chart", NK_MINIMIZED))
		{
			/* Chart Widgets
			 * This library has two different rather simple charts. The line and the
			 * column chart. Both provide a simple way of visualizing values and
			 * have a retained mode and immediate mode API version. For the retain
			 * mode version `nk_plot` and `nk_plot_function` you either provide
			 * an array or a callback to call to handle drawing the graph.
			 * For the immediate mode version you start by calling `nk_chart_begin`
			 * and need to provide min and max values for scaling on the Y-axis.
			 * and then call `nk_chart_push` to push values into the chart.
			 * Finally `nk_chart_end` needs to be called to end the process. */
			float id = 0;
			static int col_index = -1;
			static int line_index = -1;
			float step = (2 * 3.141592654f) / 32;

			int i;
			int index = -1;
			struct nk_rect bounds;

			/* line chart */
			id = 0;
			index = -1;
			nk_layout_row_dynamic(ctx, 100, 1);
			bounds = nk_widget_bounds(ctx);
			if(nk_chart_begin(ctx, NK_CHART_LINES, 32, -1.0f, 1.0f)) {
				for(i = 0; i < 32; ++i) {
					nk_flags res = nk_chart_push(ctx, (float)cos(id));
					if(res & NK_CHART_HOVERING)
						index = (int)i;
					if(res & NK_CHART_CLICKED)
						line_index = (int)i;
					id += step;
				}
				nk_chart_end(ctx);
			}

			if(index != -1)
				nk_tooltipf(ctx, "Value: %.2f", (float)cos((float)index*step));
			if(line_index != -1) {
				nk_layout_row_dynamic(ctx, 20, 1);
				nk_labelf(ctx, NK_TEXT_LEFT, "Selected value: %.2f", (float)cos((float)index*step));
			}

			/* column chart */
			nk_layout_row_dynamic(ctx, 100, 1);
			bounds = nk_widget_bounds(ctx);
			if(nk_chart_begin(ctx, NK_CHART_COLUMN, 32, 0.0f, 1.0f)) {
				for(i = 0; i < 32; ++i) {
					nk_flags res = nk_chart_push(ctx, (float)fabs(sin(id)));
					if(res & NK_CHART_HOVERING)
						index = (int)i;
					if(res & NK_CHART_CLICKED)
						col_index = (int)i;
					id += step;
				}
				nk_chart_end(ctx);
			}
			if(index != -1)
				nk_tooltipf(ctx, "Value: %.2f", (float)fabs(sin(step * (float)index)));
			if(col_index != -1) {
				nk_layout_row_dynamic(ctx, 20, 1);
				nk_labelf(ctx, NK_TEXT_LEFT, "Selected value: %.2f", (float)fabs(sin(step * (float)col_index)));
			}

			/* mixed chart */
			nk_layout_row_dynamic(ctx, 100, 1);
			bounds = nk_widget_bounds(ctx);
			if(nk_chart_begin(ctx, NK_CHART_COLUMN, 32, 0.0f, 1.0f)) {
				nk_chart_add_slot(ctx, NK_CHART_LINES, 32, -1.0f, 1.0f);
				nk_chart_add_slot(ctx, NK_CHART_LINES, 32, -1.0f, 1.0f);
				for(id = 0, i = 0; i < 32; ++i) {
					nk_chart_push_slot(ctx, (float)fabs(sin(id)), 0);
					nk_chart_push_slot(ctx, (float)cos(id), 1);
					nk_chart_push_slot(ctx, (float)sin(id), 2);
					id += step;
				}
			}
			nk_chart_end(ctx);

			/* mixed colored chart */
			nk_layout_row_dynamic(ctx, 100, 1);
			bounds = nk_widget_bounds(ctx);
			if(nk_chart_begin_colored(ctx, NK_CHART_LINES, nk_rgb(255, 0, 0), nk_rgb(150, 0, 0), 32, 0.0f, 1.0f)) {
				nk_chart_add_slot_colored(ctx, NK_CHART_LINES, nk_rgb(0, 0, 255), nk_rgb(0, 0, 150), 32, -1.0f, 1.0f);
				nk_chart_add_slot_colored(ctx, NK_CHART_LINES, nk_rgb(0, 255, 0), nk_rgb(0, 150, 0), 32, -1.0f, 1.0f);
				for(id = 0, i = 0; i < 32; ++i) {
					nk_chart_push_slot(ctx, (float)fabs(sin(id)), 0);
					nk_chart_push_slot(ctx, (float)cos(id), 1);
					nk_chart_push_slot(ctx, (float)sin(id), 2);
					id += step;
				}
			}
			nk_chart_end(ctx);
			nk_tree_pop(ctx);
		}

		if(nk_tree_push(ctx, NK_TREE_TAB, "Popup", NK_MINIMIZED))
		{
			static struct nk_color color = { 255,0,0, 255 };
			static int select[4];
			static int popup_active;
			const struct nk_input *in = &ctx->input;
			struct nk_rect bounds;

			/* menu contextual */
			nk_layout_row_static(ctx, 30, 160, 1);
			bounds = nk_widget_bounds(ctx);
			nk_label(ctx, "Right click me for menu", NK_TEXT_LEFT);

			if(nk_contextual_begin(ctx, 0, nk_vec2(100, 300), bounds)) {
				static size_t prog = 40;
				static int slider = 10;

				nk_layout_row_dynamic(ctx, 25, 1);
				nk_checkbox_label(ctx, "Menu", &show_menu);
				nk_progress(ctx, &prog, 100, NK_MODIFIABLE);
				nk_slider_int(ctx, 0, &slider, 16, 1);
				if(nk_contextual_item_label(ctx, "About", NK_TEXT_CENTERED))
					show_app_about = nk_true;
				nk_selectable_label(ctx, select[0] ? "Unselect" : "Select", NK_TEXT_LEFT, &select[0]);
				nk_selectable_label(ctx, select[1] ? "Unselect" : "Select", NK_TEXT_LEFT, &select[1]);
				nk_selectable_label(ctx, select[2] ? "Unselect" : "Select", NK_TEXT_LEFT, &select[2]);
				nk_selectable_label(ctx, select[3] ? "Unselect" : "Select", NK_TEXT_LEFT, &select[3]);
				nk_contextual_end(ctx);
			}

			/* color contextual */
			nk_layout_row_begin(ctx, NK_STATIC, 30, 2);
			nk_layout_row_push(ctx, 100);
			nk_label(ctx, "Right Click here:", NK_TEXT_LEFT);
			nk_layout_row_push(ctx, 50);
			bounds = nk_widget_bounds(ctx);
			nk_button_color(ctx, color);
			nk_layout_row_end(ctx);

			if(nk_contextual_begin(ctx, 0, nk_vec2(350, 60), bounds)) {
				nk_layout_row_dynamic(ctx, 30, 4);
				color.r = (nk_byte)nk_propertyi(ctx, "#r", 0, color.r, 255, 1, 1);
				color.g = (nk_byte)nk_propertyi(ctx, "#g", 0, color.g, 255, 1, 1);
				color.b = (nk_byte)nk_propertyi(ctx, "#b", 0, color.b, 255, 1, 1);
				color.a = (nk_byte)nk_propertyi(ctx, "#a", 0, color.a, 255, 1, 1);
				nk_contextual_end(ctx);
			}

			/* popup */
			nk_layout_row_begin(ctx, NK_STATIC, 30, 2);
			nk_layout_row_push(ctx, 100);
			nk_label(ctx, "Popup:", NK_TEXT_LEFT);
			nk_layout_row_push(ctx, 50);
			if(nk_button_label(ctx, "Popup"))
				popup_active = 1;
			nk_layout_row_end(ctx);

			if(popup_active)
			{
				static struct nk_rect s = { 20, 100, 220, 90 };
				if(nk_popup_begin(ctx, NK_POPUP_STATIC, "Error", 0, s))
				{
					nk_layout_row_dynamic(ctx, 25, 1);
					nk_label(ctx, "A terrible error as occured", NK_TEXT_LEFT);
					nk_layout_row_dynamic(ctx, 25, 2);
					if(nk_button_label(ctx, "OK")) {
						popup_active = 0;
						nk_popup_close(ctx);
					}
					if(nk_button_label(ctx, "Cancel")) {
						popup_active = 0;
						nk_popup_close(ctx);
					}
					nk_popup_end(ctx);
				}
				else popup_active = nk_false;
			}

			/* tooltip */
			nk_layout_row_static(ctx, 30, 150, 1);
			bounds = nk_widget_bounds(ctx);
			nk_label(ctx, "Hover me for tooltip", NK_TEXT_LEFT);
			if(nk_input_is_mouse_hovering_rect(in, bounds))
				nk_tooltip(ctx, "This is a tooltip");

			nk_tree_pop(ctx);
		}

		if(nk_tree_push(ctx, NK_TREE_TAB, "Layout", NK_MINIMIZED))
		{
			if(nk_tree_push(ctx, NK_TREE_NODE, "Widget", NK_MINIMIZED))
			{
				float ratio_two[] = { 0.2f, 0.6f, 0.2f };
				float width_two[] = { 100, 200, 50 };

				nk_layout_row_dynamic(ctx, 30, 1);
				nk_label(ctx, "Dynamic fixed column layout with generated position and size:", NK_TEXT_LEFT);
				nk_layout_row_dynamic(ctx, 30, 3);
				nk_button_label(ctx, "button");
				nk_button_label(ctx, "button");
				nk_button_label(ctx, "button");

				nk_layout_row_dynamic(ctx, 30, 1);
				nk_label(ctx, "static fixed column layout with generated position and size:", NK_TEXT_LEFT);
				nk_layout_row_static(ctx, 30, 100, 3);
				nk_button_label(ctx, "button");
				nk_button_label(ctx, "button");
				nk_button_label(ctx, "button");

				nk_layout_row_dynamic(ctx, 30, 1);
				nk_label(ctx, "Dynamic array-based custom column layout with generated position and custom size:", NK_TEXT_LEFT);
				nk_layout_row(ctx, NK_DYNAMIC, 30, 3, ratio_two);
				nk_button_label(ctx, "button");
				nk_button_label(ctx, "button");
				nk_button_label(ctx, "button");

				nk_layout_row_dynamic(ctx, 30, 1);
				nk_label(ctx, "Static array-based custom column layout with generated position and custom size:", NK_TEXT_LEFT);
				nk_layout_row(ctx, NK_STATIC, 30, 3, width_two);
				nk_button_label(ctx, "button");
				nk_button_label(ctx, "button");
				nk_button_label(ctx, "button");

				nk_layout_row_dynamic(ctx, 30, 1);
				nk_label(ctx, "Dynamic immediate mode custom column layout with generated position and custom size:", NK_TEXT_LEFT);
				nk_layout_row_begin(ctx, NK_DYNAMIC, 30, 3);
				nk_layout_row_push(ctx, 0.2f);
				nk_button_label(ctx, "button");
				nk_layout_row_push(ctx, 0.6f);
				nk_button_label(ctx, "button");
				nk_layout_row_push(ctx, 0.2f);
				nk_button_label(ctx, "button");
				nk_layout_row_end(ctx);

				nk_layout_row_dynamic(ctx, 30, 1);
				nk_label(ctx, "Static immediate mode custom column layout with generated position and custom size:", NK_TEXT_LEFT);
				nk_layout_row_begin(ctx, NK_STATIC, 30, 3);
				nk_layout_row_push(ctx, 100);
				nk_button_label(ctx, "button");
				nk_layout_row_push(ctx, 200);
				nk_button_label(ctx, "button");
				nk_layout_row_push(ctx, 50);
				nk_button_label(ctx, "button");
				nk_layout_row_end(ctx);

				nk_layout_row_dynamic(ctx, 30, 1);
				nk_label(ctx, "Static free space with custom position and custom size:", NK_TEXT_LEFT);
				nk_layout_space_begin(ctx, NK_STATIC, 60, 4);
				nk_layout_space_push(ctx, nk_rect(100, 0, 100, 30));
				nk_button_label(ctx, "button");
				nk_layout_space_push(ctx, nk_rect(0, 15, 100, 30));
				nk_button_label(ctx, "button");
				nk_layout_space_push(ctx, nk_rect(200, 15, 100, 30));
				nk_button_label(ctx, "button");
				nk_layout_space_push(ctx, nk_rect(100, 30, 100, 30));
				nk_button_label(ctx, "button");
				nk_layout_space_end(ctx);

				nk_layout_row_dynamic(ctx, 30, 1);
				nk_label(ctx, "Row template:", NK_TEXT_LEFT);
				nk_layout_row_template_begin(ctx, 30);
				nk_layout_row_template_push_dynamic(ctx);
				nk_layout_row_template_push_variable(ctx, 80);
				nk_layout_row_template_push_static(ctx, 80);
				nk_layout_row_template_end(ctx);
				nk_button_label(ctx, "button");
				nk_button_label(ctx, "button");
				nk_button_label(ctx, "button");

				nk_tree_pop(ctx);
			}

			if(nk_tree_push(ctx, NK_TREE_NODE, "Group", NK_MINIMIZED))
			{
				static int group_titlebar = nk_false;
				static int group_border = nk_true;
				static int group_no_scrollbar = nk_false;
				static int group_width = 320;
				static int group_height = 200;

				nk_flags group_flags = 0;
				if(group_border) group_flags |= NK_WINDOW_BORDER;
				if(group_no_scrollbar) group_flags |= NK_WINDOW_NO_SCROLLBAR;
				if(group_titlebar) group_flags |= NK_WINDOW_TITLE;

				nk_layout_row_dynamic(ctx, 30, 3);
				nk_checkbox_label(ctx, "Titlebar", &group_titlebar);
				nk_checkbox_label(ctx, "Border", &group_border);
				nk_checkbox_label(ctx, "No Scrollbar", &group_no_scrollbar);

				nk_layout_row_begin(ctx, NK_STATIC, 22, 3);
				nk_layout_row_push(ctx, 50);
				nk_label(ctx, "size:", NK_TEXT_LEFT);
				nk_layout_row_push(ctx, 130);
				nk_property_int(ctx, "#Width:", 100, &group_width, 500, 10, 1);
				nk_layout_row_push(ctx, 130);
				nk_property_int(ctx, "#Height:", 100, &group_height, 500, 10, 1);
				nk_layout_row_end(ctx);

				nk_layout_row_static(ctx, (float)group_height, group_width, 2);
				if(nk_group_begin(ctx, "Group", group_flags)) {
					int i = 0;
					static int selected[16];
					nk_layout_row_static(ctx, 18, 100, 1);
					for(i = 0; i < 16; ++i)
						nk_selectable_label(ctx, (selected[i]) ? "Selected" : "Unselected", NK_TEXT_CENTERED, &selected[i]);
					nk_group_end(ctx);
				}
				nk_tree_pop(ctx);
			}
			if(nk_tree_push(ctx, NK_TREE_NODE, "Tree", NK_MINIMIZED))
			{
				static int root_selected = 0;
				int sel = root_selected;
				if(nk_tree_element_push(ctx, NK_TREE_NODE, "Root", NK_MINIMIZED, &sel)) {
					static int selected[8];
					int i = 0, node_select = selected[0];
					if(sel != root_selected) {
						root_selected = sel;
						for(i = 0; i < 8; ++i)
							selected[i] = sel;
					}
					if(nk_tree_element_push(ctx, NK_TREE_NODE, "Node", NK_MINIMIZED, &node_select)) {
						int j = 0;
						static int sel_nodes[4];
						if(node_select != selected[0]) {
							selected[0] = node_select;
							for(i = 0; i < 4; ++i)
								sel_nodes[i] = node_select;
						}
						nk_layout_row_static(ctx, 18, 100, 1);
						for(j = 0; j < 4; ++j)
							nk_selectable_symbol_label(ctx, NK_SYMBOL_CIRCLE_SOLID, (sel_nodes[j]) ? "Selected" : "Unselected", NK_TEXT_RIGHT, &sel_nodes[j]);
						nk_tree_element_pop(ctx);
					}
					nk_layout_row_static(ctx, 18, 100, 1);
					for(i = 1; i < 8; ++i)
						nk_selectable_symbol_label(ctx, NK_SYMBOL_CIRCLE_SOLID, (selected[i]) ? "Selected" : "Unselected", NK_TEXT_RIGHT, &selected[i]);
					nk_tree_element_pop(ctx);
				}
				nk_tree_pop(ctx);
			}
			if(nk_tree_push(ctx, NK_TREE_NODE, "Notebook", NK_MINIMIZED))
			{
				static int current_tab = 0;
				struct nk_rect bounds;
				float step = (2 * 3.141592654f) / 32;
				enum chart_type { CHART_LINE, CHART_HISTO, CHART_MIXED };
				const char *names[] = { "Lines", "Columns", "Mixed" };
				float id = 0;
				int i;

				/* Header */
				nk_style_push_vec2(ctx, &ctx->style.window.spacing, nk_vec2(0, 0));
				nk_style_push_float(ctx, &ctx->style.button.rounding, 0);
				nk_layout_row_begin(ctx, NK_STATIC, 20, 3);
				for(i = 0; i < 3; ++i) {
					/* make sure button perfectly fits text */
					const struct nk_user_font *f = ctx->style.font;
					float text_width = f->width(f->userdata, f->height, names[i], nk_strlen(names[i]));
					float widget_width = text_width + 3 * ctx->style.button.padding.x;
					nk_layout_row_push(ctx, widget_width);
					if(current_tab == i) {
						/* active tab gets highlighted */
						struct nk_style_item button_color = ctx->style.button.normal;
						ctx->style.button.normal = ctx->style.button.active;
						current_tab = nk_button_label(ctx, names[i]) ? i : current_tab;
						ctx->style.button.normal = button_color;
					}
					else current_tab = nk_button_label(ctx, names[i]) ? i : current_tab;
				}
				nk_style_pop_float(ctx);

				/* Body */
				nk_layout_row_dynamic(ctx, 140, 1);
				if(nk_group_begin(ctx, "Notebook", NK_WINDOW_BORDER))
				{
					nk_style_pop_vec2(ctx);
					switch(current_tab) {
					default: break;
					case CHART_LINE:
						nk_layout_row_dynamic(ctx, 100, 1);
						bounds = nk_widget_bounds(ctx);
						if(nk_chart_begin_colored(ctx, NK_CHART_LINES, nk_rgb(255, 0, 0), nk_rgb(150, 0, 0), 32, 0.0f, 1.0f)) {
							nk_chart_add_slot_colored(ctx, NK_CHART_LINES, nk_rgb(0, 0, 255), nk_rgb(0, 0, 150), 32, -1.0f, 1.0f);
							for(i = 0, id = 0; i < 32; ++i) {
								nk_chart_push_slot(ctx, (float)fabs(sin(id)), 0);
								nk_chart_push_slot(ctx, (float)cos(id), 1);
								id += step;
							}
						}
						nk_chart_end(ctx);
						break;
					case CHART_HISTO:
						nk_layout_row_dynamic(ctx, 100, 1);
						bounds = nk_widget_bounds(ctx);
						if(nk_chart_begin_colored(ctx, NK_CHART_COLUMN, nk_rgb(255, 0, 0), nk_rgb(150, 0, 0), 32, 0.0f, 1.0f)) {
							for(i = 0, id = 0; i < 32; ++i) {
								nk_chart_push_slot(ctx, (float)fabs(sin(id)), 0);
								id += step;
							}
						}
						nk_chart_end(ctx);
						break;
					case CHART_MIXED:
						nk_layout_row_dynamic(ctx, 100, 1);
						bounds = nk_widget_bounds(ctx);
						if(nk_chart_begin_colored(ctx, NK_CHART_LINES, nk_rgb(255, 0, 0), nk_rgb(150, 0, 0), 32, 0.0f, 1.0f)) {
							nk_chart_add_slot_colored(ctx, NK_CHART_LINES, nk_rgb(0, 0, 255), nk_rgb(0, 0, 150), 32, -1.0f, 1.0f);
							nk_chart_add_slot_colored(ctx, NK_CHART_COLUMN, nk_rgb(0, 255, 0), nk_rgb(0, 150, 0), 32, 0.0f, 1.0f);
							for(i = 0, id = 0; i < 32; ++i) {
								nk_chart_push_slot(ctx, (float)fabs(sin(id)), 0);
								nk_chart_push_slot(ctx, (float)fabs(cos(id)), 1);
								nk_chart_push_slot(ctx, (float)fabs(sin(id)), 2);
								id += step;
							}
						}
						nk_chart_end(ctx);
						break;
					}
					nk_group_end(ctx);
				}
				else nk_style_pop_vec2(ctx);
				nk_tree_pop(ctx);
			}

			if(nk_tree_push(ctx, NK_TREE_NODE, "Simple", NK_MINIMIZED))
			{
				nk_layout_row_dynamic(ctx, 300, 2);
				if(nk_group_begin(ctx, "Group_Without_Border", 0)) {
					int i = 0;
					char buffer[64];
					nk_layout_row_static(ctx, 18, 150, 1);
					for(i = 0; i < 64; ++i) {
						sprintf(buffer, "0x%02x", i);
						nk_labelf(ctx, NK_TEXT_LEFT, "%s: scrollable region", buffer);
					}
					nk_group_end(ctx);
				}
				if(nk_group_begin(ctx, "Group_With_Border", NK_WINDOW_BORDER)) {
					int i = 0;
					char buffer[64];
					nk_layout_row_dynamic(ctx, 25, 2);
					for(i = 0; i < 64; ++i) {
						sprintf(buffer, "%08d", ((((i % 7) * 10) ^ 32)) + (64 + (i % 2) * 2));
						nk_button_label(ctx, buffer);
					}
					nk_group_end(ctx);
				}
				nk_tree_pop(ctx);
			}

			if(nk_tree_push(ctx, NK_TREE_NODE, "Complex", NK_MINIMIZED))
			{
				int i;
				nk_layout_space_begin(ctx, NK_STATIC, 500, 64);
				nk_layout_space_push(ctx, nk_rect(0, 0, 150, 500));
				if(nk_group_begin(ctx, "Group_left", NK_WINDOW_BORDER)) {
					static int selected[32];
					nk_layout_row_static(ctx, 18, 100, 1);
					for(i = 0; i < 32; ++i)
						nk_selectable_label(ctx, (selected[i]) ? "Selected" : "Unselected", NK_TEXT_CENTERED, &selected[i]);
					nk_group_end(ctx);
				}

				nk_layout_space_push(ctx, nk_rect(160, 0, 150, 240));
				if(nk_group_begin(ctx, "Group_top", NK_WINDOW_BORDER)) {
					nk_layout_row_dynamic(ctx, 25, 1);
					nk_button_label(ctx, "#FFAA");
					nk_button_label(ctx, "#FFBB");
					nk_button_label(ctx, "#FFCC");
					nk_button_label(ctx, "#FFDD");
					nk_button_label(ctx, "#FFEE");
					nk_button_label(ctx, "#FFFF");
					nk_group_end(ctx);
				}

				nk_layout_space_push(ctx, nk_rect(160, 250, 150, 250));
				if(nk_group_begin(ctx, "Group_buttom", NK_WINDOW_BORDER)) {
					nk_layout_row_dynamic(ctx, 25, 1);
					nk_button_label(ctx, "#FFAA");
					nk_button_label(ctx, "#FFBB");
					nk_button_label(ctx, "#FFCC");
					nk_button_label(ctx, "#FFDD");
					nk_button_label(ctx, "#FFEE");
					nk_button_label(ctx, "#FFFF");
					nk_group_end(ctx);
				}

				nk_layout_space_push(ctx, nk_rect(320, 0, 150, 150));
				if(nk_group_begin(ctx, "Group_right_top", NK_WINDOW_BORDER)) {
					static int selected[4];
					nk_layout_row_static(ctx, 18, 100, 1);
					for(i = 0; i < 4; ++i)
						nk_selectable_label(ctx, (selected[i]) ? "Selected" : "Unselected", NK_TEXT_CENTERED, &selected[i]);
					nk_group_end(ctx);
				}

				nk_layout_space_push(ctx, nk_rect(320, 160, 150, 150));
				if(nk_group_begin(ctx, "Group_right_center", NK_WINDOW_BORDER)) {
					static int selected[4];
					nk_layout_row_static(ctx, 18, 100, 1);
					for(i = 0; i < 4; ++i)
						nk_selectable_label(ctx, (selected[i]) ? "Selected" : "Unselected", NK_TEXT_CENTERED, &selected[i]);
					nk_group_end(ctx);
				}

				nk_layout_space_push(ctx, nk_rect(320, 320, 150, 150));
				if(nk_group_begin(ctx, "Group_right_bottom", NK_WINDOW_BORDER)) {
					static int selected[4];
					nk_layout_row_static(ctx, 18, 100, 1);
					for(i = 0; i < 4; ++i)
						nk_selectable_label(ctx, (selected[i]) ? "Selected" : "Unselected", NK_TEXT_CENTERED, &selected[i]);
					nk_group_end(ctx);
				}
				nk_layout_space_end(ctx);
				nk_tree_pop(ctx);
			}

			if(nk_tree_push(ctx, NK_TREE_NODE, "Splitter", NK_MINIMIZED))
			{
				const struct nk_input *in = &ctx->input;
				nk_layout_row_static(ctx, 20, 320, 1);
				nk_label(ctx, "Use slider and spinner to change tile size", NK_TEXT_LEFT);
				nk_label(ctx, "Drag the space between tiles to change tile ratio", NK_TEXT_LEFT);

				if(nk_tree_push(ctx, NK_TREE_NODE, "Vertical", NK_MINIMIZED))
				{
					static float a = 100, b = 100, c = 100;
					struct nk_rect bounds;

					float row_layout[5];
					row_layout[0] = a;
					row_layout[1] = 8;
					row_layout[2] = b;
					row_layout[3] = 8;
					row_layout[4] = c;

					/* header */
					nk_layout_row_static(ctx, 30, 100, 2);
					nk_label(ctx, "left:", NK_TEXT_LEFT);
					nk_slider_float(ctx, 10.0f, &a, 200.0f, 10.0f);

					nk_label(ctx, "middle:", NK_TEXT_LEFT);
					nk_slider_float(ctx, 10.0f, &b, 200.0f, 10.0f);

					nk_label(ctx, "right:", NK_TEXT_LEFT);
					nk_slider_float(ctx, 10.0f, &c, 200.0f, 10.0f);

					/* tiles */
					nk_layout_row(ctx, NK_STATIC, 200, 5, row_layout);

					/* left space */
					if(nk_group_begin(ctx, "left", NK_WINDOW_NO_SCROLLBAR | NK_WINDOW_BORDER | NK_WINDOW_NO_SCROLLBAR)) {
						nk_layout_row_dynamic(ctx, 25, 1);
						nk_button_label(ctx, "#FFAA");
						nk_button_label(ctx, "#FFBB");
						nk_button_label(ctx, "#FFCC");
						nk_button_label(ctx, "#FFDD");
						nk_button_label(ctx, "#FFEE");
						nk_button_label(ctx, "#FFFF");
						nk_group_end(ctx);
					}

					/* scaler */
					bounds = nk_widget_bounds(ctx);
					nk_spacing(ctx, 1);
					if((nk_input_is_mouse_hovering_rect(in, bounds) ||
						nk_input_is_mouse_prev_hovering_rect(in, bounds)) &&
						nk_input_is_mouse_down(in, NK_BUTTON_LEFT))
					{
						a = row_layout[0] + in->mouse.delta.x;
						b = row_layout[2] - in->mouse.delta.x;
					}

					/* middle space */
					if(nk_group_begin(ctx, "center", NK_WINDOW_BORDER | NK_WINDOW_NO_SCROLLBAR)) {
						nk_layout_row_dynamic(ctx, 25, 1);
						nk_button_label(ctx, "#FFAA");
						nk_button_label(ctx, "#FFBB");
						nk_button_label(ctx, "#FFCC");
						nk_button_label(ctx, "#FFDD");
						nk_button_label(ctx, "#FFEE");
						nk_button_label(ctx, "#FFFF");
						nk_group_end(ctx);
					}

					/* scaler */
					bounds = nk_widget_bounds(ctx);
					nk_spacing(ctx, 1);
					if((nk_input_is_mouse_hovering_rect(in, bounds) ||
						nk_input_is_mouse_prev_hovering_rect(in, bounds)) &&
						nk_input_is_mouse_down(in, NK_BUTTON_LEFT))
					{
						b = (row_layout[2] + in->mouse.delta.x);
						c = (row_layout[4] - in->mouse.delta.x);
					}

					/* right space */
					if(nk_group_begin(ctx, "right", NK_WINDOW_BORDER | NK_WINDOW_NO_SCROLLBAR)) {
						nk_layout_row_dynamic(ctx, 25, 1);
						nk_button_label(ctx, "#FFAA");
						nk_button_label(ctx, "#FFBB");
						nk_button_label(ctx, "#FFCC");
						nk_button_label(ctx, "#FFDD");
						nk_button_label(ctx, "#FFEE");
						nk_button_label(ctx, "#FFFF");
						nk_group_end(ctx);
					}

					nk_tree_pop(ctx);
				}

				if(nk_tree_push(ctx, NK_TREE_NODE, "Horizontal", NK_MINIMIZED))
				{
					static float a = 100, b = 100, c = 100;
					struct nk_rect bounds;

					/* header */
					nk_layout_row_static(ctx, 30, 100, 2);
					nk_label(ctx, "top:", NK_TEXT_LEFT);
					nk_slider_float(ctx, 10.0f, &a, 200.0f, 10.0f);

					nk_label(ctx, "middle:", NK_TEXT_LEFT);
					nk_slider_float(ctx, 10.0f, &b, 200.0f, 10.0f);

					nk_label(ctx, "bottom:", NK_TEXT_LEFT);
					nk_slider_float(ctx, 10.0f, &c, 200.0f, 10.0f);

					/* top space */
					nk_layout_row_dynamic(ctx, a, 1);
					if(nk_group_begin(ctx, "top", NK_WINDOW_NO_SCROLLBAR | NK_WINDOW_BORDER)) {
						nk_layout_row_dynamic(ctx, 25, 3);
						nk_button_label(ctx, "#FFAA");
						nk_button_label(ctx, "#FFBB");
						nk_button_label(ctx, "#FFCC");
						nk_button_label(ctx, "#FFDD");
						nk_button_label(ctx, "#FFEE");
						nk_button_label(ctx, "#FFFF");
						nk_group_end(ctx);
					}

					/* scaler */
					nk_layout_row_dynamic(ctx, 8, 1);
					bounds = nk_widget_bounds(ctx);
					nk_spacing(ctx, 1);
					if((nk_input_is_mouse_hovering_rect(in, bounds) ||
						nk_input_is_mouse_prev_hovering_rect(in, bounds)) &&
						nk_input_is_mouse_down(in, NK_BUTTON_LEFT))
					{
						a = a + in->mouse.delta.y;
						b = b - in->mouse.delta.y;
					}

					/* middle space */
					nk_layout_row_dynamic(ctx, b, 1);
					if(nk_group_begin(ctx, "middle", NK_WINDOW_NO_SCROLLBAR | NK_WINDOW_BORDER)) {
						nk_layout_row_dynamic(ctx, 25, 3);
						nk_button_label(ctx, "#FFAA");
						nk_button_label(ctx, "#FFBB");
						nk_button_label(ctx, "#FFCC");
						nk_button_label(ctx, "#FFDD");
						nk_button_label(ctx, "#FFEE");
						nk_button_label(ctx, "#FFFF");
						nk_group_end(ctx);
					}

					{
						/* scaler */
						nk_layout_row_dynamic(ctx, 8, 1);
						bounds = nk_widget_bounds(ctx);
						if((nk_input_is_mouse_hovering_rect(in, bounds) ||
							nk_input_is_mouse_prev_hovering_rect(in, bounds)) &&
							nk_input_is_mouse_down(in, NK_BUTTON_LEFT))
						{
							b = b + in->mouse.delta.y;
							c = c - in->mouse.delta.y;
						}
					}

					/* bottom space */
					nk_layout_row_dynamic(ctx, c, 1);
					if(nk_group_begin(ctx, "bottom", NK_WINDOW_NO_SCROLLBAR | NK_WINDOW_BORDER)) {
						nk_layout_row_dynamic(ctx, 25, 3);
						nk_button_label(ctx, "#FFAA");
						nk_button_label(ctx, "#FFBB");
						nk_button_label(ctx, "#FFCC");
						nk_button_label(ctx, "#FFDD");
						nk_button_label(ctx, "#FFEE");
						nk_button_label(ctx, "#FFFF");
						nk_group_end(ctx);
					}
					nk_tree_pop(ctx);
				}
				nk_tree_pop(ctx);
			}
			nk_tree_pop(ctx);
		}
	}
	nk_end(ctx);
}


void game_render(void)
{
    renderer_render(game_state->renderer, game_state->scene);
}

void game_cleanup(void)
{
    if(game_state)
    {
		if(game_state->is_initialized)
		{
			editor_cleanup(game_state->editor);
			scene_destroy(game_state->scene);
			input_cleanup();
			renderer_cleanup(game_state->renderer);
			gui_game_cleanup(game_state->gui_game);
			gui_cleanup(game_state->gui_editor);
			console_destroy(game_state->console);
            geom_cleanup();
			framebuffer_cleanup();
			texture_cleanup();
			shader_cleanup();
			sound_cleanup(game_state->sound);
			debug_vars_cleanup(game_state->debug_vars);
			event_manager_cleanup(game_state->event_manager);

			free(game_state->editor);
			free(game_state->console);
			free(game_state->scene);
			free(game_state->renderer);
			free(game_state->event_manager);
			free(game_state->gui_editor);
			free(game_state->gui_game);
			free(game_state->sound);
			free(game_state->debug_vars);
			hashmap_free(game_state->scene_init_func_table);
			hashmap_free(game_state->scene_cleanup_func_table);
		}
		free(game_state);
		game_state = NULL;
    }
}

struct Game_State* game_state_get(void)
{
    return game_state;
}


void game_on_log_message(const char* message, va_list args)
{
    console_on_log_message(game_state->console, message, args);
}

void game_on_log_warning(const char* warning_message, va_list args)
{
    console_on_log_warning(game_state->console, warning_message, args);
}

void game_on_log_error(const char* context, const char* error_message, va_list args)
{
    console_on_log_error(game_state->console, context, error_message, args);
}

void game_update_physics(float fixed_dt)
{
	struct Game_State* game_state = game_state_get();
	if(game_state->update_scene)
		scene_update_physics(game_state->scene, fixed_dt);
}

void game_on_scene_loaded(struct Event* event)
{
	game_state->update_scene = true;
}

void game_on_scene_cleared(struct Event* event)
{
	game_state->update_scene = false;
}

void game_on_player_death(struct Event* event)
{
	game_state->update_scene = false;
}