Emulator: Set camera zoom-level and screen flip in scene JSON

assets/scene/scene1.json

@@ -4,6 +4,13 @@
 		"translate": [ 0.0, 0.0, -1.0 ],
 		"rotate": [ 0.0, 0.0, 0.0 ],
 		"scale": [ 1.0, 1.0, 1.0 ],
-		"type": "orthographic"
+		"type": "orthographic",
+		"zoom-level": 0.45
+	},
+	"quad" : [
+		{
+			"name": "Screen",
+			"scale": [ 1.0, -0.9, 1.0 ]
 		}
+	]
 }

src/ppu.cpp

@@ -25,17 +25,8 @@ PPU ::PPU(uint32_t frequency)
 {
 	m_shared_registers.emplace("LY", &m_lcd_y_coordinate);
 
-	// Setup screen
-
 	auto& scene = Inferno::Application::the().scene();
-	m_entity = scene.createEntity("Screen");
+	m_entity = scene.findEntity("Screen");
-
-	// Flip the screen to accommodate OpenGL's coordinate system
-	auto& transform = scene.getComponent<Inferno::TransformComponent>(m_entity);
-	transform.scale.y = -1.0f;
-
-	auto texture = std::make_shared<Inferno::Texture>(m_screen.data(), SCREEN_WIDTH, SCREEN_HEIGHT, FORMAT_SIZE);
-	scene.addComponent<Inferno::SpriteComponent>(m_entity, glm::vec4 { 1.0f }, texture);
 }
 
 PPU::~PPU()