InteractiveNode now recieves "mouseEnter" and "mouseLeave" respectively

core/src/com/saltosion/gladiator/GladiatorBrawler.java

@@ -175,6 +175,7 @@ public class GladiatorBrawler extends ApplicationAdapter {
 	public void initializeTestGUI() {
 		Sprite img1 = SpriteLoader.loadSprite(Name.WALLIMG, 0, 0, 32, 64);
 		Sprite img2 = SpriteLoader.loadSprite(Name.WALLIMG, 1, 0, 32, 64);
+		System.out.println(img1.getRegionHeight() + " - " + img1.getRegionWidth());
 		ButtonNode button = new ButtonNode("test-button", img1, img2) {
 			@Override
 			public void click(float x, float y, Input.Buttons mouseButton) {
@@ -188,6 +189,8 @@ public class GladiatorBrawler extends ApplicationAdapter {
 	@Override
 	public void resize(int width, int height) {
 		super.resize(width, height);
+		RenderingSystem.screenHeight = height;
+		RenderingSystem.screenWidth = width;
 		RenderingSystem rs = engine.getSystem(RenderingSystem.class);
 		float aspectratio = ((float) width) / ((float) height);
 		rs.aspectratio = aspectratio;

core/src/com/saltosion/gladiator/gui/GUIManager.java

@@ -1,5 +1,7 @@
 package com.saltosion.gladiator.gui;
 
+import java.util.ArrayList;
+
 public class GUIManager {
 	private final GUINode rootNode;
 
@@ -11,4 +13,13 @@ public class GUIManager {
 		return this.rootNode;
 	}
 	
+	public ArrayList<GUINode> getAllRecursiveChildren(GUINode guiNode) {
+		ArrayList<GUINode> list = new ArrayList<GUINode>();
+		for (GUINode child : guiNode.getChildren()) {
+			list.add(child);
+			list.addAll(getAllRecursiveChildren(child));
+		}
+		return list;
+	}
+	
 }

core/src/com/saltosion/gladiator/input/InputHandler.java

@@ -4,12 +4,22 @@ import java.util.HashMap;
 
 import com.badlogic.gdx.Input.Keys;
 import com.badlogic.gdx.InputProcessor;
+import com.badlogic.gdx.graphics.g2d.Sprite;
+import com.badlogic.gdx.utils.Array;
+import com.saltosion.gladiator.gui.GUINode;
+import com.saltosion.gladiator.gui.ImageNode;
+import com.saltosion.gladiator.gui.InteractiveNode;
+import com.saltosion.gladiator.systems.RenderingSystem;
+import com.saltosion.gladiator.util.AppUtil;
+import com.saltosion.gladiator.util.Global;
 import com.saltosion.gladiator.util.Name;
 
 public class InputHandler implements InputProcessor {
 
 	public HashMap<Integer, String> keys = new HashMap<Integer, String>();
 	
+	private Array<String> hoveredUIElements = new Array<String>();
+
 	public InputHandler() {
 		keys.put(Keys.A, Name.MOVE_LEFT);
 		keys.put(Keys.D, Name.MOVE_RIGHT);
@@ -61,6 +71,38 @@ public class InputHandler implements InputProcessor {
 
 	@Override
 	public boolean mouseMoved(int screenX, int screenY) {
+		float x = (float)(screenX)/RenderingSystem.screenWidth;
+		float y = 1-(float)(screenY)/RenderingSystem.screenHeight;
+		
+		for (GUINode node : AppUtil.guiManager.getAllRecursiveChildren(AppUtil.guiManager.getRootNode())) {
+			if (node instanceof ImageNode) {
+				Sprite s = ((ImageNode) node).getImage();
+				float height = (s.getHeight()*Global.SPRITE_SCALE)/AppUtil.VPHEIGHT_CONST;
+				float width = (s.getWidth()*Global.SPRITE_SCALE)/(AppUtil.VPHEIGHT_CONST*RenderingSystem.aspectratio);
+				float x0 = node.getPosition().x-width/2;
+				float x1 = node.getPosition().x+width/2;
+				float y0 = node.getPosition().y-height/2;
+				float y1 = node.getPosition().y+height/2;
+				x += 0.01f;
+				if (node instanceof InteractiveNode) {
+					InteractiveNode interactiveNode = (InteractiveNode) node;
+					
+					if (x >= x0 && x <= x1 && y >= y0 && y <= y1) {
+						if (hoveredUIElements.contains(node.getID(), false)) {
+							continue;
+						}
+						hoveredUIElements.add(node.getID());
+						interactiveNode.mouseEnter(x, y);
+					} else {
+						if (!hoveredUIElements.contains(node.getID(), false)) {
+							continue;
+						}
+						hoveredUIElements.removeValue(node.getID(), false);
+						interactiveNode.mouseLeave(x, y);
+					}
+				}
+			}
+		}
 		return false;
 	}
 

core/src/com/saltosion/gladiator/systems/RenderingSystem.java

@@ -37,7 +37,10 @@ public class RenderingSystem extends EntitySystem {
 	private BitmapFont font;
 	private ShapeRenderer debugRenderer;
 	private OrthographicCamera camera;
-	public float aspectratio;
+	
+	public static float aspectratio;
+	public static int screenHeight = 0;
+	public static int screenWidth = 0;
 
 	private boolean debug = true;
 	private final Color debugColor = new Color(0, 1, 0, 1);

core/src/com/saltosion/gladiator/util/Global.java

@@ -7,7 +7,6 @@ public class Global {
 
     public static final String GAME_NAME = "Gladiator Brawl";
     
-    public static final int VPHEIGHT_CONST = 14;
     public static final float SPRITE_SCALE = 1 / 16f;
 
 }