#include "renderer.h"
#include "gl_load.h"

#include "../common/log.h"
#include "camera.h"
#include "model.h"
#include "texture.h"
#include "framebuffer.h"
#include "../common/array.h"
#include "shader.h"
#include "../common/num_types.h"
#include "light.h"
#include "entity.h"
#include "transform.h"
#include "game.h"
#include "gui.h"
#include "../common/hashmap.h"
#include "geometry.h"
#include "material.h"
#include "editor.h"
#include "sprite.h"
#include "im_render.h"
#include "../common/variant.h"
#include "../common/common.h"
#include "scene.h"

#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>

void on_framebuffer_size_change(int width, int height);

void renderer_init(struct Renderer* renderer)
{
	assert(renderer);

	glClearColor(0.3f, 0.6f, 0.9f, 1.0f);
	glEnable(GL_DEPTH_TEST);
	glEnable(GL_CULL_FACE);
	glCullFace(GL_BACK);
    platform->windowresize_callback_set(on_framebuffer_size_change);
	gui_init();

	struct Hashmap* cvars = platform->config.get();
	renderer->settings.fog.mode           = hashmap_int_get(cvars,   "fog_mode");
	renderer->settings.fog.density        = hashmap_float_get(cvars, "fog_density");
	renderer->settings.fog.start_dist     = hashmap_float_get(cvars, "fog_start_dist");
	renderer->settings.fog.max_dist       = hashmap_float_get(cvars, "fog_max_dist");
	renderer->settings.fog.color          = hashmap_vec3_get(cvars,  "fog_color");
	renderer->settings.debug_draw_enabled = hashmap_bool_get(cvars,  "debug_draw_enabled");
	renderer->settings.debug_draw_physics = hashmap_bool_get(cvars,  "debug_draw_physics");
	renderer->settings.debug_draw_mode    = hashmap_int_get(cvars,   "debug_draw_mode");
	renderer->settings.debug_draw_color   = hashmap_vec4_get(cvars,  "debug_draw_color");
	renderer->settings.ambient_light      = hashmap_vec3_get(cvars,  "ambient_light");
	
	/* Quad geometry for final render */
	vec3* vertices = array_new(vec3);
	vec2* uvs      = array_new(vec2);
	vec3* normals  = array_new(vec3);
	uint* indices  = array_new(uint);
	vec3 temp_v3; 
	vec2 temp_v2;
	/* Vertices */
	temp_v3.x = -1; temp_v3.y = -1; temp_v3.z = 0;	array_push(vertices, temp_v3, vec3);
	temp_v3.x =  1; temp_v3.y = -1; temp_v3.z = 0;	array_push(vertices, temp_v3, vec3);
	temp_v3.x =  1; temp_v3.y =  1; temp_v3.z = 0;	array_push(vertices, temp_v3, vec3);
	temp_v3.x = -1; temp_v3.y =  1; temp_v3.z = 0;	array_push(vertices, temp_v3, vec3);
	/* Normals */
	temp_v3.x = 0; temp_v3.y = 1; temp_v3.z = 0;	array_push(normals, temp_v3, vec3);
	temp_v3.x = 0; temp_v3.y = 1; temp_v3.z = 0;	array_push(normals, temp_v3, vec3);
	/* Uvs */
	temp_v2.x = 0; temp_v2.y = 0; array_push(uvs, temp_v2, vec2);
	temp_v2.x = 1; temp_v2.y = 0; array_push(uvs, temp_v2, vec2);
	temp_v2.x = 1; temp_v2.y = 1; array_push(uvs, temp_v2, vec2);
	temp_v2.x = 0; temp_v2.y = 1; array_push(uvs, temp_v2, vec2);
	/* Indices */
	array_push(indices, 0, uint); array_push(indices, 1, uint); array_push(indices, 2, uint);
	array_push(indices, 2, uint); array_push(indices, 3, uint); array_push(indices, 0, uint);
	
	renderer->quad_geo = geom_create("Quad", vertices, uvs, normals, indices, NULL);
	array_free(vertices);
	array_free(uvs);
	array_free(normals);
	array_free(indices);

	int width = -1, height = -1;
	struct Game_State* game_state = game_state_get();
    platform->window.get_size(game_state->window, &width, &height);
	renderer->def_albedo_tex = texture_create("def_albedo_texture",
									          TU_DIFFUSE,
									          width, height,
									          GL_RGB,
									          GL_RGB16F,
									          GL_FLOAT,
									          NULL);
	texture_set_param(renderer->def_albedo_tex, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
	texture_set_param(renderer->def_albedo_tex, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
	texture_set_param(renderer->def_albedo_tex, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
	texture_set_param(renderer->def_albedo_tex, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

	renderer->def_depth_tex = texture_create("def_depth_texture",
									          TU_SHADOWMAP4,
									          width, height,
									          GL_DEPTH_COMPONENT,
									          GL_DEPTH_COMPONENT32F,
									          GL_FLOAT,
									          NULL);
	texture_set_param(renderer->def_depth_tex, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
	texture_set_param(renderer->def_depth_tex, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
	texture_set_param(renderer->def_depth_tex, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
	texture_set_param(renderer->def_depth_tex, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
	texture_set_param(renderer->def_depth_tex, GL_TEXTURE_COMPARE_MODE, GL_COMPARE_REF_TO_TEXTURE);
	texture_set_param(renderer->def_depth_tex, GL_TEXTURE_COMPARE_FUNC, GL_LEQUAL);

	renderer->def_fbo = framebuffer_create(width, height, true, false, true);
	framebuffer_texture_set(renderer->def_fbo, renderer->def_albedo_tex, FA_COLOR_ATTACHMENT0);
	framebuffer_texture_set(renderer->def_fbo, renderer->def_depth_tex, FA_DEPTH_ATTACHMENT);
	renderer->composition_shader = shader_create("fbo.vert", "fbo.frag");
	renderer->debug_shader       = shader_create("debug.vert", "debug.frag");

	renderer->num_culled_slot   = editor_debugvar_slot_create("Culled Geom",   VT_INT);
	renderer->num_rendered_slot = editor_debugvar_slot_create("Rendered Geom", VT_INT);
	renderer->num_indices_slot  = editor_debugvar_slot_create("Total Indices", VT_INT);

	renderer->sprite_batch = malloc(sizeof(*renderer->sprite_batch));
	if(!renderer->sprite_batch)
	{
		log_error("renderer:init", "Failed to allocated sprite batch");
	}
	else
	{
		sprite_batch_create(renderer->sprite_batch, "sprite_map.tga", "sprite.vert", "sprite.frag", GL_TRIANGLES);
	}

	im_init();

	// Initialize materials
	for(int i = 0; i < MAT_MAX; i++)
	{
		material_init(&renderer->materials[i], i);
	}
}

void renderer_draw(struct Renderer* renderer, struct Scene* scene)
{
	/* Render each camera output into it's framebuffer or to the default framebuffer */
	for(int i = 0; i < MAX_CAMERAS; i++)
	{
		struct Camera* camera = &scene->cameras[i];
		if(!camera->base.active) continue;

		int fbo = camera->fbo == -1 ? renderer->def_fbo : camera->fbo;
		framebuffer_bind(fbo);
		{
			glViewport(0, 0, framebuffer_width_get(fbo), framebuffer_height_get(fbo));
			glEnable(GL_DEPTH_TEST);
			glDepthFunc(GL_LEQUAL);
			glClearColor(camera->clear_color.x,
						 camera->clear_color.y,
						 camera->clear_color.z,
						 camera->clear_color.w);
			glEnable(GL_CULL_FACE );
			glCullFace(GL_BACK);
			glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
			static mat4 mvp;
			for(int i = 0; i < MAT_MAX; i++)
			{
				/* for each material, get all the registered models and render them */
				struct Material* material = &renderer->materials[i];
				GL_CHECK(shader_bind(material->shader));

				if(material->lit)	/* Set light information */
				{
					char uniform_name[MAX_UNIFORM_NAME_LEN];
					memset(uniform_name, '\0', MAX_UNIFORM_NAME_LEN);
					int light_count = -1;
					for(int i = 0; i < MAX_LIGHTS; i++)
					{
						struct Light* light = &scene->lights[i]; /* TODO: Cull lights according to camera frustum */
						if(!light->base.active && light->valid) continue;
						light_count++;

						vec3 light_pos = {0, 0, 0};
						transform_get_absolute_position(&light->base, &light_pos);

						if(light->type != LT_POINT)
						{
							snprintf(uniform_name, MAX_UNIFORM_NAME_LEN, "lights[%d].direction", light_count);
							vec3 light_dir = {0.f, 0.f, 0.f};
							transform_get_absolute_lookat(&light->base, &light_dir);
							vec3_norm(&light_dir, &light_dir);
							shader_set_uniform_vec3(material->shader, uniform_name, &light_dir);
							memset(uniform_name, '\0', MAX_UNIFORM_NAME_LEN);
						}

						if(light->type != LT_DIR)
						{
							snprintf(uniform_name, MAX_UNIFORM_NAME_LEN, "lights[%d].position", light_count);
							shader_set_uniform_vec3(material->shader,  uniform_name, &light_pos);
							memset(uniform_name, '\0', MAX_UNIFORM_NAME_LEN);

							snprintf(uniform_name, MAX_UNIFORM_NAME_LEN, "lights[%d].outer_angle", light_count);
							shader_set_uniform_float(material->shader, uniform_name, light->outer_angle);
							memset(uniform_name, '\0', MAX_UNIFORM_NAME_LEN);
					
							snprintf(uniform_name, MAX_UNIFORM_NAME_LEN, "lights[%d].inner_angle", light_count);
							shader_set_uniform_float(material->shader, uniform_name, light->inner_angle);
							memset(uniform_name, '\0', MAX_UNIFORM_NAME_LEN);
					
							snprintf(uniform_name, MAX_UNIFORM_NAME_LEN, "lights[%d].falloff", light_count);
							shader_set_uniform_float(material->shader, uniform_name, light->falloff);
							memset(uniform_name, '\0', MAX_UNIFORM_NAME_LEN);

							snprintf(uniform_name, MAX_UNIFORM_NAME_LEN, "lights[%d].radius", light_count);
							shader_set_uniform_int(material->shader, uniform_name, light->radius);
							memset(uniform_name, '\0', MAX_UNIFORM_NAME_LEN);
						}
					
						snprintf(uniform_name, MAX_UNIFORM_NAME_LEN, "lights[%d].color", light_count);
						shader_set_uniform_vec3(material->shader,  uniform_name, &light->color);
						memset(uniform_name, '\0', MAX_UNIFORM_NAME_LEN);
					
						snprintf(uniform_name, MAX_UNIFORM_NAME_LEN, "lights[%d].intensity", light_count);
						shader_set_uniform_float(material->shader, uniform_name, light->intensity);
						memset(uniform_name, '\0', MAX_UNIFORM_NAME_LEN);
					
						snprintf(uniform_name, MAX_UNIFORM_NAME_LEN, "lights[%d].type", light_count);
						shader_set_uniform_int(material->shader, uniform_name, light->type);
						memset(uniform_name, '\0', MAX_UNIFORM_NAME_LEN);
					}

					light_count++; // this variable is going to be used for looping an array so increase its length by one
					GL_CHECK(shader_set_uniform(material->pipeline_params[MPP_TOTAL_LIGHTS].type, material->pipeline_params[MPP_TOTAL_LIGHTS].location, &light_count));
					vec3 camera_pos = {0, 0, 0};
					transform_get_absolute_position(&camera->base, &camera_pos);
					GL_CHECK(shader_set_uniform(material->pipeline_params[MPP_CAM_POS].type, material->pipeline_params[MPP_CAM_POS].location, &camera_pos));
				}

				/* Set material pipeline uniforms */
				GL_CHECK(shader_set_uniform(material->pipeline_params[MPP_FOG_MODE].type, material->pipeline_params[MPP_FOG_MODE].location, &renderer->settings.fog.mode));
				GL_CHECK(shader_set_uniform(material->pipeline_params[MPP_FOG_DENSITY].type, material->pipeline_params[MPP_FOG_DENSITY].location, &renderer->settings.fog.density));
				GL_CHECK(shader_set_uniform(material->pipeline_params[MPP_FOG_START_DIST].type, material->pipeline_params[MPP_FOG_START_DIST].location, &renderer->settings.fog.start_dist));
				GL_CHECK(shader_set_uniform(material->pipeline_params[MPP_FOG_MAX_DIST].type, material->pipeline_params[MPP_FOG_MAX_DIST].location, &renderer->settings.fog.max_dist));
				GL_CHECK(shader_set_uniform(material->pipeline_params[MPP_FOG_COLOR].type, material->pipeline_params[MPP_FOG_COLOR].location, &renderer->settings.fog.color));
				GL_CHECK(shader_set_uniform(material->pipeline_params[MPP_AMBIENT_LIGHT].type, material->pipeline_params[MPP_AMBIENT_LIGHT].location, &renderer->settings.ambient_light));
				if(material->lit) GL_CHECK(shader_set_uniform(material->pipeline_params[MPP_VIEW_MAT].type, material->pipeline_params[MPP_VIEW_MAT].location, &camera->view_mat));

		
				for(int j = 0; j < MAX_MATERIAL_REGISTERED_STATIC_MESHES; j++)
				{
					if(!material->registered_static_meshes[j]) continue;

					/* for each registered model, set up uniforms and render */
					struct Static_Mesh* mesh     = material->registered_static_meshes[j];
					struct Geometry*    geometry = geom_get(mesh->model.geometry_index);

					/* Check if model is in frustum */
					vec3 abs_pos, abs_scale;
					transform_get_absolute_position(&mesh->base, &abs_pos);
					transform_get_absolute_scale(&mesh->base, &abs_scale);
					int intersection = bv_intersect_frustum_sphere(&camera->frustum, &geometry->bounding_sphere, &abs_pos, &abs_scale);
					if(intersection == IT_OUTSIDE)
					{
						renderer->num_culled++;
						continue;
					}
					else
					{
						renderer->num_indices += array_len(geometry->indices);
						renderer->num_rendered++;
					}

					/* set material params for the model */
					for(int k = 0; k < MMP_MAX; k++)
					{
						switch(mesh->model.material_params[k].type)
						{
						case VT_INT:   GL_CHECK(shader_set_uniform(material->model_params[k].type, material->model_params[k].location, &mesh->model.material_params[k].val_int));   break;
						case VT_FLOAT: GL_CHECK(shader_set_uniform(material->model_params[k].type, material->model_params[k].location, &mesh->model.material_params[k].val_float)); break;
						case VT_VEC3:  GL_CHECK(shader_set_uniform(material->model_params[k].type, material->model_params[k].location, &mesh->model.material_params[k].val_vec3));  break;
						case VT_VEC4:  GL_CHECK(shader_set_uniform(material->model_params[k].type, material->model_params[k].location, &mesh->model.material_params[k].val_vec4));  break;
						}
					}

					/* Set pipeline uniforms that are derived per model */
					mat4_identity(&mvp);
					mat4_mul(&mvp, &camera->view_proj_mat, &mesh->base.transform.trans_mat);
					GL_CHECK(shader_set_uniform(material->pipeline_params[MPP_MVP].type, material->pipeline_params[MPP_MVP].location, &mvp));

					if(material->lit)
					{
						GL_CHECK(shader_set_uniform(material->pipeline_params[MPP_VIEW_MAT].type, material->pipeline_params[MPP_VIEW_MAT].location, &camera->view_mat));
						GL_CHECK(shader_set_uniform(material->pipeline_params[MPP_MODEL_MAT].type, material->pipeline_params[MPP_MODEL_MAT].location, &mesh->base.transform.trans_mat));
						mat4 inv_mat;
						mat4_identity(&inv_mat);
						mat4_inverse(&inv_mat, &mesh->base.transform.trans_mat);
						GL_CHECK(shader_set_uniform(material->pipeline_params[MPP_INV_MODEL_MAT].type, material->pipeline_params[MPP_INV_MODEL_MAT].location, &inv_mat));
					}
			
					/* Render the geometry */
					//int indices = geom_render_in_frustum(model->geometry_index, &viewer->camera.frustum[0], entity, draw_mode);
					//geom_render(model->geometry_index, draw_mode);
					geom_render(mesh->model.geometry_index, GDM_TRIANGLES);

					for(int k = 0; k < MMP_MAX; k++)
					{
						/* unbind textures, if any */
						if(material->model_params[k].type == UT_TEX)
							GL_CHECK(texture_unbind(mesh->model.material_params[k].val_int));
					}
				}
				shader_unbind();
			}
			editor_debugvar_slot_set_int(renderer->num_rendered_slot, renderer->num_rendered);
			editor_debugvar_slot_set_int(renderer->num_culled_slot, renderer->num_culled);
			editor_debugvar_slot_set_int(renderer->num_indices_slot, renderer->num_indices);

			renderer->num_culled = renderer->num_rendered = renderer->num_indices = 0;
		}
		framebuffer_unbind();
		glDisable(GL_DEPTH_TEST);
		glDisable(GL_CULL_FACE);
	}

	/* Final Render */
	struct Camera* active_camera = &scene->cameras[scene->active_camera_index];
	int width, height;
	struct Game_State* game_state = game_state_get();
    platform->window.get_size(game_state->window, &width, &height);
	glViewport(0, 0, width, height);
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	shader_bind(renderer->composition_shader);
	int final_render_tex = active_camera->render_tex == -1 ? renderer->def_albedo_tex : active_camera->render_tex;
	texture_bind(final_render_tex);
	geom_render(renderer->quad_geo, GDM_TRIANGLES);
	texture_unbind(final_render_tex);
	shader_unbind();

	/* Debug Render */
    struct Hashmap* cvars = platform->config.get();
	if(hashmap_bool_get(cvars, "debug_draw_enabled"))
	{
		glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
		vec4 debug_draw_color = hashmap_vec4_get(cvars, "debug_draw_color");
		shader_bind(renderer->debug_shader);
		{
			static mat4 mvp;
			shader_set_uniform_vec4(renderer->debug_shader, "debug_color", &debug_draw_color);
			for(int i = 0; i < MAX_STATIC_MESHES; i++)
			{
				struct Static_Mesh* mesh = &scene->static_meshes[i];
				if(!mesh->base.active) continue;
				struct Model*     model     = &mesh->model;
				struct Transform* transform = &mesh->base.transform;
				int               geometry  = model->geometry_index;
				mat4_identity(&mvp);
				mat4_mul(&mvp, &active_camera->view_proj_mat, &transform->trans_mat);
				shader_set_uniform_mat4(renderer->debug_shader, "mvp", &mvp);
				geom_render(geometry, hashmap_int_get(cvars, "debug_draw_mode"));
			}
		}
		shader_unbind();
		glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
	}

	// Debug Physics render
	if(hashmap_bool_get(cvars, "debug_draw_physics"))
	{
		static vec4 physics_draw_color = { 0.f, 0.f, 1.f, 1.f };
		for(int i = 0; i < MAX_STATIC_MESHES; i++)
		{
			struct Static_Mesh* mesh = &scene->static_meshes[i];
			if(!mesh->base.active || (!mesh->collision.collision_shape && !mesh->collision.rigidbody)) continue;

			//Get collision mesh and it's props then render it
			vec3 pos = {0.f};
			quat rot = {0.f, 0.f, 0.f, 1.f };
			if(mesh->collision.rigidbody)
			{
				platform->physics.body_position_get(mesh->collision.rigidbody, &pos.x, &pos.y, &pos.z);
				platform->physics.body_rotation_get(mesh->collision.rigidbody, &rot.x, &rot.y, &rot.z, &rot.w);
			}
			else
			{
				platform->physics.cs_position_get(mesh->collision.collision_shape, &pos.x, &pos.y, &pos.z);
				platform->physics.cs_rotation_get(mesh->collision.collision_shape, &rot.x, &rot.y, &rot.z, &rot.w);
			}

			int collision_shape_type = platform->physics.cs_type_get(mesh->collision.collision_shape);
			switch(collision_shape_type)
			{
			case CST_SPHERE:
			{
				float radius = platform->physics.cs_sphere_radius_get(mesh->collision.collision_shape);
				im_sphere(radius, pos, rot, physics_draw_color, GDM_TRIANGLES);
			}
			break;
			case CST_BOX:
			{
				float x = 0.f, y = 0.f, z = 0.f;
				platform->physics.cs_box_params_get(mesh->collision.collision_shape, &x, &y, &z);
				im_box(x, y, z, pos, rot, physics_draw_color, GDM_TRIANGLES);
			};
			break;
			default: break;
			}
		}
	}

	//Immediate mode geometry render
	im_render(active_camera);


	/* Render 2D stuff */
	shader_bind(renderer->sprite_batch->shader);
	{
		static mat4 ortho_mat;
		mat4_identity(&ortho_mat);
		int width, height;
		struct Game_State* game_state = game_state_get();
		platform->window.get_size(game_state->window, &width, &height);

		mat4_ortho(&ortho_mat, 0.f, (float)width, (float)height, 0.f, -10.f, 10.f);
		shader_set_uniform_mat4(renderer->sprite_batch->shader, "mvp", &ortho_mat);

		sprite_batch_render(renderer->sprite_batch);
	}
	shader_unbind();

	/* Render UI */
	gui_render(NK_ANTI_ALIASING_ON);
}

void renderer_cleanup(struct Renderer* renderer)
{
	for(int i = 0; i < MAT_MAX; i++)
	{
		material_reset(&renderer->materials[i], i);
	}
	im_cleanup();
	sprite_batch_remove(renderer->sprite_batch);
	free(renderer->sprite_batch);
	gui_cleanup();
	geom_remove(renderer->quad_geo);
	framebuffer_remove(renderer->def_fbo);
	texture_remove(renderer->def_albedo_tex);
	texture_remove(renderer->def_depth_tex);
}

void on_framebuffer_size_change(int width, int height)
{
	struct Scene* scene = game_state_get()->scene;
	float aspect = (float)width / (float)height;
	for(int i = 0; i < MAX_CAMERAS; i++)
	{
		struct Camera* viewer = &scene->cameras[i];
		viewer->aspect_ratio = aspect > 0.f ? aspect : 4.f / 3.f;
		camera_update_proj(viewer);
	}
	
	framebuffer_resize_all(width, height);
}

void renderer_clearcolor_set(float red, float green, float blue, float alpha)
{
	glClearColor(red, green, blue, alpha);
}

struct Material * renderer_material_get(int material_type)
{
	return NULL;
}

void renderer_debug_draw_enabled(bool enabled)
{
    struct Hashmap* cvars = platform->config.get();
	hashmap_bool_set(cvars,  "debug_draw_enabled", enabled);
}

void renderer_settings_get(struct Render_Settings* settings)
{
    struct Hashmap* cvars = platform->config.get();
	settings->fog.mode               = hashmap_int_get(cvars,   "fog_mode");
	settings->fog.density            = hashmap_float_get(cvars, "fog_density");
	settings->fog.start_dist         = hashmap_float_get(cvars, "fog_start_dist");
	settings->fog.max_dist           = hashmap_float_get(cvars, "fog_max_dist");
	settings->fog.color              = hashmap_vec3_get(cvars,  "fog_color");
	settings->debug_draw_enabled     = hashmap_bool_get(cvars,  "debug_draw_enabled");
	settings->debug_draw_physics     = hashmap_bool_get(cvars,  "debug_draw_physics");
	settings->debug_draw_mode        = hashmap_int_get(cvars,   "debug_draw_mode");
	settings->debug_draw_color       = hashmap_vec4_get(cvars,  "debug_draw_color");
	settings->ambient_light          = hashmap_vec3_get(cvars,  "ambient_light");
}

void renderer_settings_set(const struct Render_Settings* settings)
{
    struct Hashmap* cvars = platform->config.get();
	hashmap_int_set(cvars,   "fog_mode",           settings->fog.mode);
	hashmap_float_set(cvars, "fog_density",        settings->fog.density);
	hashmap_float_set(cvars, "fog_start_dist",     settings->fog.start_dist);
	hashmap_float_set(cvars, "fog_max_dist",       settings->fog.max_dist);
	hashmap_vec3_set(cvars,  "fog_color",          &settings->fog.color);
	hashmap_bool_set(cvars,  "debug_draw_enabled", settings->debug_draw_enabled);
	hashmap_bool_set(cvars,  "debug_draw_physics", settings->debug_draw_physics);
	hashmap_int_set(cvars,   "debug_draw_mode",    settings->debug_draw_mode);
	hashmap_vec4_set(cvars,  "debug_draw_color",   &settings->debug_draw_color);
	hashmap_vec3_set(cvars,  "ambient_light",      &settings->ambient_light);
}