Closes #13. Boxes are now purrfectly stackable.

cicaprojekt/Gate.java

@@ -12,6 +12,12 @@ public class Gate extends Tile {
         if (this.open) adjacentTile.get(direction).spawnStargate(stargate, direction);
     }
 
+    @Override
+    public boolean boxPermission()
+    {
+        return open;
+    }
+
     @Override
     public void onEntry(PlayerBase playerBase) {
         super.onEntry(playerBase);

cicaprojekt/Player.java

@@ -32,7 +32,7 @@ public class Player extends PlayerBase {
     public void boxDrop() {
         if(!isDestroyed()) {
             Tile target = currentTile.getAdjacentTile(facingDirection);
-            if (target.isSteppable()) {
+            if (target.boxPermission()) {
                 target.putABox(boxLifted);
                 boxLifted = null;
             }

cicaprojekt/Tile.java

@@ -93,4 +93,8 @@ public abstract class Tile {
     public boolean hasBox() {
         return !boxStack.isEmpty();
     }
+
+    public boolean boxPermission() {
+        return true;
+    }
 }

cicaprojekt/Wall.java

@@ -30,6 +30,12 @@ public class Wall extends Tile {
         }
     }
 
+    @Override
+    public boolean boxPermission()
+    {
+        return false;
+    }
+
     @Override
     public void onEntry(PlayerBase playerBase) {
         super.onEntry(playerBase);