Fixed broken orthographic camera

README.md

@@ -155,7 +155,6 @@
 
 - ## TODO
 
-	- Fix bugs with sprite batch renderer not working with projection matrix
 	- Implement necessary changes to run Soloud on linux
 	- Get rid of pkg-confg and system-installed SDL2 dependancy on linux and instead put custom compiled SDL libs in third_party similar to how we're handling it in windows
 	- Add fallback shader
@@ -340,3 +339,5 @@
 	* Fixed bugs with shader include file pre-processor
 	* Fixed bugs with editor's camera property viewer
 	* Fixed bugs related to changing camera projection
+	* Fixed bugs with sprite batch renderer not working with projection matrix
+	* Fixed broken orthographic camera

src/libsymmetry/camera.c

@@ -47,6 +47,7 @@ void camera_create(struct Entity* entity, int width, int height)
 	camera->fov        = 60.f;
 	camera->ortho      = false;
 	camera->resizeable = true;
+	camera->zoom       = 1.f;
 	float aspect_ratio = (float)width / (float)height;
 	camera->aspect_ratio = aspect_ratio <= 0.f ? (4.f / 3.f) : aspect_ratio;
 	mat4_identity(&camera->view_mat);
@@ -86,7 +87,7 @@ void camera_update_proj(struct Entity* entity)
 	if(!camera->ortho)
 	{
 		mat4_perspective(&camera->proj_mat,
-						 camera->fov,
+						 camera->fov / camera->zoom,
 						 camera->aspect_ratio,
 						 camera->nearz,
 						 camera->farz);
@@ -96,8 +97,13 @@ void camera_update_proj(struct Entity* entity)
 		int width, height;
 		struct Game_State* game_state = game_state_get();
 		platform->window.get_size(game_state->window, &width, &height);
-
-		mat4_ortho(&camera->proj_mat, 0, width, height, 0, camera->nearz, camera->farz);
+		mat4_ortho(&camera->proj_mat, 
+					-width / camera->zoom,
+					 width / camera->zoom,
+					 height / camera->zoom,
+					-height / camera->zoom,
+					 camera->nearz,
+					 camera->farz);
 	}
 	camera_update_view_proj(entity);
 }

src/libsymmetry/editor.c

@@ -376,6 +376,15 @@ void editor_update(float dt)
 							bool update = false;
 							struct Camera* camera = &entity->camera;
 							
+							nk_layout_row_dynamic(context, row_height, 2);
+							nk_label(context, "Orthographic", NK_TEXT_ALIGN_LEFT | NK_TEXT_ALIGN_MIDDLE);
+							bool ortho = nk_checkbox_label(context, "", &camera->ortho);
+							if(ortho != camera->ortho)
+							{
+								update = true;
+							}
+							
+
 							if(!camera->ortho)
 							{
 								nk_layout_row_dynamic(context, row_height, 1);
@@ -394,6 +403,14 @@ void editor_update(float dt)
 							nk_layout_row_dynamic(context, row_height, 1);
 							editor_widget_color_combov4(context, &camera->clear_color, 200, 300);
 
+							nk_layout_row_dynamic(context, row_height, 1);
+							float new_zoom = nk_propertyf(context, "Zoom", 1.f, camera->zoom, FLT_MAX, 0.1f, 1.f);
+							if(new_zoom != camera->zoom)
+							{
+								camera->zoom = new_zoom;
+								update = true;
+							}
+
 							nk_layout_row_dynamic(context, row_height, 1);
 							float new_near_z = nk_propertyf(context, "NearZ", -FLT_MAX, camera->nearz, camera->farz, 0.1f, 1.f);
 							if(new_near_z != camera->nearz)
@@ -412,7 +429,7 @@ void editor_update(float dt)
 
 							if(update)
 							{
-								if(!camera->ortho) camera_update_view(entity);
+								camera_update_view(entity);
 								camera_update_proj(entity);
 							}
 

src/libsymmetry/entity.c

@@ -226,6 +226,7 @@ bool entity_write(struct Entity* entity, struct Parser_Object* object)
 		hashmap_bool_set(entity_data, "ortho", camera->ortho);
 		hashmap_bool_set(entity_data, "resizeable", camera->resizeable);
 		hashmap_float_set(entity_data, "fov", camera->fov);
+		hashmap_float_set(entity_data, "zoom", camera->zoom);
 		hashmap_float_set(entity_data, "nearz", camera->nearz);
 		hashmap_float_set(entity_data, "farz", camera->farz);
 		hashmap_vec4_set(entity_data, "clear_color", &camera->clear_color);
@@ -395,6 +396,7 @@ struct Entity* entity_read(struct Parser_Object* object)
 
 		if(hashmap_value_exists(object->data, "fov"))                entity->camera.fov = hashmap_float_get(object->data, "fov");
 		if(hashmap_value_exists(object->data, "resizeable"))         entity->camera.resizeable = hashmap_bool_get(object->data, "resizeable");
+		if(hashmap_value_exists(object->data, "zoom"))               entity->camera.zoom = hashmap_float_get(object->data, "zoom");
 		if(hashmap_value_exists(object->data, "nearz"))              entity->camera.nearz = hashmap_float_get(object->data, "nearz");
 		if(hashmap_value_exists(object->data, "farz"))               entity->camera.farz = hashmap_float_get(object->data, "farz");
 		if(hashmap_value_exists(object->data, "ortho"))              entity->camera.ortho = hashmap_bool_get(object->data, "ortho");

src/libsymmetry/entity.h

@@ -74,6 +74,7 @@ struct Camera
 	float aspect_ratio;
 	float nearz;
 	float farz;
+	float zoom;
 	bool  ortho;
 	int   fbo;
 	int   render_tex;

src/libsymmetry/game.c

@@ -220,7 +220,7 @@ void scene_setup(void)
 		/*struct Camera* camera = &player->camera;
 		camera->ortho = true;
 		camera->farz  = 500.f;
-		camera->nearz = 1.f;
+		camera->nearz = -500.f;
 		camera_update_proj(player);*/
 
 		/*struct Entity* suz = entity_find("Suzanne");