started writing node system

com/danitheskunk/skunkworks/BaseGame.java

@@ -3,17 +3,20 @@ package com.danitheskunk.skunkworks;
 import com.danitheskunk.skunkworks.gfx.Color;
 import com.danitheskunk.skunkworks.gfx.IRenderContext;
 import com.danitheskunk.skunkworks.gfx.font.IFont;
+import com.danitheskunk.skunkworks.nodes.Node;
 
 public abstract class BaseGame {
 	protected Engine engine;
 	protected IWindow window;
 	protected IFont debugFont;
+	protected Node rootNode;
 
 	public BaseGame(Vec2i windowSize, String windowTitle) {
 		this.engine = new Engine();
 		this.window = engine.openWindow(windowSize, windowTitle);
 		//todo: load from .jar
 		this.debugFont = window.loadFontTileset("fonts/ega-8x14.png");
+		this.rootNode = new Node();
 		init();
 	}
 
@@ -23,6 +26,8 @@ public abstract class BaseGame {
 			//todo: frame rate control
 			update(1000.0 / 60.0);
 			var rc = window.renderStart();
+			renderPre(rc);
+			rootNode.render(rc);
 			render(rc);
 			window.renderFinish(rc);
 		}
@@ -32,8 +37,12 @@ public abstract class BaseGame {
 
 	}
 
+	protected void renderPre(IRenderContext rc) {
+
+	}
+
 	protected void render(IRenderContext rc) {
-		rc.drawString(new Vec2i(8, 8), "Welcome to Skunkworks, please overide the render method to get started", debugFont, Color.LIGHT_GRAY);
+		//rc.drawString(new Vec2i(8, 8), "Welcome to Skunkworks, please overide the render method to get started", debugFont, Color.LIGHT_GRAY);
 	}
 
 	protected void update(double delta) {

com/danitheskunk/skunkworks/TestNode.java

@@ -0,0 +1,19 @@
+package com.danitheskunk.skunkworks;
+
+import com.danitheskunk.skunkworks.nodes.NodeSprite;
+
+public class TestNode extends BaseGame {
+	NodeSprite sprite;
+
+	public TestNode() {
+		super(new Vec2i(1280, 720), "Skunkworks");
+		sprite = new NodeSprite();
+		sprite.setTexture(window.loadTexture("demoassets/test.png"));
+		sprite.setPos(new Vec2f(100, 100));
+		rootNode.add(sprite);
+	}
+
+	public static void main(String[] args) {
+		new TestNode().run();
+	}
+}

com/danitheskunk/skunkworks/Vec2f.java

@@ -1,6 +1,7 @@
 package com.danitheskunk.skunkworks;
 
 public final class Vec2f {
+	public final static Vec2f ZERO = new Vec2f(0, 0);
 	private final double x, y;
 
 	//constructors

com/danitheskunk/skunkworks/nodes/Node.java

@@ -0,0 +1,59 @@
+package com.danitheskunk.skunkworks.nodes;
+
+import com.danitheskunk.skunkworks.Vec2f;
+import com.danitheskunk.skunkworks.gfx.IRenderContext;
+
+import java.sql.Array;
+import java.util.*;
+
+//todo: figure out the whole translation position thingie
+
+public class Node implements Iterable<Node> {
+	protected List<Node> children;
+	protected Node parent;
+	protected Vec2f pos;
+
+	public Node() {
+		children = new ArrayList<>();
+		parent = null;
+		pos = Vec2f.ZERO;
+	}
+
+	public Vec2f getPos() {
+		return pos;
+	}
+
+	public void setPos(Vec2f pos) {
+		this.pos = pos;
+	}
+
+	public void add(Node node) {
+		if(node.parent != null) {
+			throw new RuntimeException("Can't add node to two nodes");
+		}
+		node.parent = this;
+		children.add(node);
+	}
+
+	public void remove(Node node) {
+		node.parent = null;
+		children.remove(node);
+	}
+
+	public void render(IRenderContext rc) {
+		for(var child : this) {
+			child.render(rc);
+		}
+	}
+
+	public Vec2f getAbsolutePos() {
+		if(parent == null)
+			return pos;
+		return Vec2f.add(parent.getAbsolutePos(), pos);
+	}
+
+	@Override
+	public Iterator<Node> iterator() {
+		return children.iterator();
+	}
+}

com/danitheskunk/skunkworks/nodes/NodeSprite.java

@@ -0,0 +1,27 @@
+package com.danitheskunk.skunkworks.nodes;
+
+import com.danitheskunk.skunkworks.Vec2f;
+import com.danitheskunk.skunkworks.gfx.IRenderContext;
+import com.danitheskunk.skunkworks.gfx.ITexture;
+
+public class NodeSprite extends Node {
+	//todo: support animations
+	private ITexture texture;
+
+	public NodeSprite() {
+		texture = null;
+	}
+
+	public ITexture getTexture() {
+		return texture;
+	}
+
+	public void setTexture(ITexture texture) {
+		this.texture = texture;
+	}
+
+	@Override
+	public void render(IRenderContext rc) {
+		rc.drawTexture(getAbsolutePos().toVec2i(), texture);
+	}
+}