started implementing GameSkunkAdvance

com/danitheskunk/skunkworks/GameSkunkAdvance.java

@@ -0,0 +1,62 @@
+package com.danitheskunk.skunkworks;
+
+
+import com.danitheskunk.skunkworks.audio.AudioEngine;
+import com.danitheskunk.skunkworks.gfx.Color;
+import org.lwjgl.glfw.GLFW;
+
+public abstract class GameSkunkAdvance {
+	protected BaseGamepad gamepad;
+	private AudioEngine audioEngine;
+	private Engine engine;
+	private IWindow window;
+
+	public GameSkunkAdvance(String title) {
+		engine = new Engine();
+		window = engine.openWindow(new Vec2i(304, 176), title);
+		window.setScaler("integer");
+		window.setWindowSize(new Vec2i(1280, 720));
+		gamepad = window.getGamepad(0);
+		audioEngine = new AudioEngine(48000, 256, 8);
+	}
+
+	public void run() {
+		double lastTime, currentTime, delta, currentFrameTime;
+
+		currentFrameTime = 0;
+
+		lastTime = GLFW.glfwGetTime();
+		while(!window.shouldClose()) {
+			currentTime = GLFW.glfwGetTime();
+			delta = currentTime - lastTime;
+			lastTime = currentTime;
+			currentFrameTime += delta;
+			engine.tick();
+			window.tick();
+			gamepad.tick();
+			//todo: frame rate control
+			if(currentFrameTime >= 1.0 / 60.0) {
+				update();
+				var p2d = window.getPipeline2D();
+				window.startFrame();
+				p2d.startFrame();
+				p2d.getRenderContext().clear(Color.WHITE);
+				//render(p2d.getRenderContext());
+				p2d.finishFrame();
+				window.finishFrame();
+				currentFrameTime -= 1.0 / 60.0;
+			} else {
+				try {
+					Thread.sleep(1);
+				} catch(InterruptedException e) {
+					throw new RuntimeException(e);
+				}
+			}
+			audioEngine.refill();
+		}
+	}
+
+	protected void update() {
+
+	}
+}

com/danitheskunk/skunkworks/TestGSA.java

@@ -0,0 +1,11 @@
+package com.danitheskunk.skunkworks;
+
+public class TestGSA extends GameSkunkAdvance {
+	public TestGSA() {
+		super("Game Skunk Advance Test");
+	}
+
+	public static void main(String[] args) {
+		new TestGSA().run();
+	}
+}

com/danitheskunk/skunkworks/backends/gl/TextureAtlas.java

@@ -70,6 +70,10 @@ class TextureAtlas {
 		int y = 0;
 		int height;
 
+		if(textures.isEmpty()) {
+			return;
+		}
+
 		textures.sort(new TextureHeightComparator().reversed());
 		height = textures.get(0).getImg().getHeight();