pausing

src/main/java/xyz/valnet/engine/scenegraph/GameObject.java

@@ -81,4 +81,8 @@ public class GameObject implements IRenderable, ITickable, Serializable {
   protected boolean getKey(int key) {
     return scene.getKey(key);
   }
+
+  protected boolean isPaused() {
+    return scene.isPaused();
+  }
 }

src/main/java/xyz/valnet/engine/scenegraph/IPauser.java

@@ -0,0 +1,5 @@
+package xyz.valnet.engine.scenegraph;
+
+public interface IPauser {
+  public boolean isPaused();
+}

src/main/java/xyz/valnet/engine/scenegraph/ITickable.java

@@ -2,4 +2,5 @@ package xyz.valnet.engine.scenegraph;
 
 public interface ITickable {
   public void update(float dTime);
+  public default void fixedUpdate(float dTime) {}
 }

src/main/java/xyz/valnet/engine/scenegraph/SceneGraph.java

@@ -72,9 +72,24 @@ public abstract class SceneGraph implements IScene {
     if(saveFlag) save();
     if(loadFlag) load();
 
-    // TICK OBJECTS
+    paused = false;
+    for(IPauser pauser : pausers) {
+      if(pauser.isPaused()) {
+        paused = true;
+        break;
+      }
+    }
+
+    if(!paused) {
+      // TICK OBJECTS
+      for(GameObject obj : objects) {
+        obj.update(dTime);
+      }
+    }
+
+    // fixed TICK OBJECTS
     for(GameObject obj : objects) {
-      obj.update(dTime);
+      obj.fixedUpdate(dTime);
     }
 
     mouseUpdate();
@@ -114,10 +129,20 @@ public abstract class SceneGraph implements IScene {
     }
   }
 
+  private boolean paused = false;
+
+  public boolean isPaused() {
+    return paused;
+  }
+
   @Override
   public void enable() {
     this.construct();
 
+    for(GameObject obj : objects) {
+      addObjectToCache(obj);
+    }
+
     for(GameObject obj : objects) {
       obj.link(this);
     }
@@ -144,10 +169,19 @@ public abstract class SceneGraph implements IScene {
     objects.clear();
   }
 
+  private Set<IPauser> pausers = new HashSet<IPauser>();
+
   public void add(GameObject obj) {
     newObjects.add(obj);
     obj.link(this);
     obj.addedToScene();
+    addObjectToCache(obj);
+  }
+
+  private void addObjectToCache(GameObject obj) {
+    if(obj instanceof IPauser) {
+      pausers.add((IPauser) obj);
+    }
   }
 
   public void remove(GameObject obj) {

src/main/java/xyz/valnet/hadean/gameobjects/SelectionUI.java

@@ -56,7 +56,7 @@ public class SelectionUI extends ImmediateUI implements ISelectionChangeListener
   }
 
   @Override
-  public void update(float dTime) {
+  public void fixedUpdate(float dTime) {
     openness = lerp(openness, opened ? 1 : 0, dTime / Constants.animationSpeed);
     if(newSelection != null) {
       selectionManager.updateSelection(newSelection);

src/main/java/xyz/valnet/hadean/gameobjects/inputlayer/SelectionLayer.java

@@ -197,6 +197,7 @@ public class SelectionLayer extends GameObject implements IMouseCaptureArea, ITr
   @Override
   public void mouseDown(int button) {
     if(!active) return;
+    if(isPaused()) return;
     
     if(button == 0) {
       if(initialCoords == null) {

src/main/java/xyz/valnet/hadean/gameobjects/ui/tabs/MenuTab.java

@@ -1,9 +1,11 @@
 package xyz.valnet.hadean.gameobjects.ui.tabs;
 
-public class MenuTab extends Tab {
+import xyz.valnet.engine.scenegraph.IPauser;
+
+public class MenuTab extends Tab implements IPauser {
 
   private int width = 300;
-  private int height = 6 * 32 + 9 * 8;
+  private int height = 6 * 32 + 1 * 16 + 6 * 8 + 2 * 24;
 
   @Override
   protected void onClose() {
@@ -18,12 +20,14 @@ public class MenuTab extends Tab {
   @Override
   protected void gui() {
     window(1024 / 2 - width / 2, animate(-height - 50, 576 / 2 - height / 2), width, height, () -> {
+      text("         ===   Paused   ===");
+      space(8);
+      if(button("Resume")) {
+        close();
+      }
+      space(24);
       if(button("Options")) {
         
-      }
-      space(8);
-      if(button("Debug")) {
-        get(DebugTab.class).open();
       }
       space(8);
       if(button("Save")) {
@@ -36,7 +40,7 @@ public class MenuTab extends Tab {
         close();
       }
       space(24);
-      if(button("Main Menu")) {
+      if(button("Quit to Menu")) {
         
       }
       space(8);
@@ -51,4 +55,9 @@ public class MenuTab extends Tab {
     return "Menu";
   }
 
+  @Override
+  public boolean isPaused() {
+    return opened;
+  }
+
 }

src/main/java/xyz/valnet/hadean/gameobjects/ui/tabs/Tab.java

@@ -21,7 +21,7 @@ public abstract class Tab extends ImmediateUI implements IBottomBarItem, ITransi
   private ExclusivityManager exclusivityManager;
 
   @Override
-  public void update(float dTime) {
+  public void fixedUpdate(float dTime) {
     animation = lerp(animation, opened ? 1 : 0, dTime / Constants.animationSpeed);
   }
 

src/main/java/xyz/valnet/hadean/input/Button.java

@@ -8,7 +8,6 @@ import xyz.valnet.engine.graphics.Color;
 import xyz.valnet.engine.graphics.Drawing;
 import xyz.valnet.engine.graphics.Tile9;
 import xyz.valnet.engine.math.Box;
-import xyz.valnet.engine.math.Vector4f;
 import xyz.valnet.engine.math.Vector4i;
 import xyz.valnet.engine.scenegraph.GameObject;
 import xyz.valnet.engine.scenegraph.IMouseCaptureArea;
@@ -125,12 +124,8 @@ public class Button extends GameObject implements IMouseCaptureArea, ITransient
 
   private IButtonListener listener = null;
 
-  public void update() {
-    update(1);
-  }
-
   @Override
-  public void update(float dTime) {
+  public void fixedUpdate(float dTime) {
     box.x = x - (int)hPad;
     box.y = y - (int)vPad;
     box.z = width + ((int)hPad) * 2;