fixed unnecessary write to texture if no changes happened

Scripts/Elements/Element.cs

@@ -18,6 +18,7 @@ public class Element {
     protected int lastMove = 0;
 
     private bool active = false;
+    private bool wasMovedThisTick = false;
     private int lastUpdate = -1;
     private Color originalColor;
 
@@ -42,6 +43,7 @@ public class Element {
 
             active = value;
             Chunk.SetElementActive(this, value);
+            Moved();
             // SetDebugColor(value, new Color(0.2f, 0.2f, 0.2f));
         }
     }
@@ -68,6 +70,7 @@ public class Element {
 
     protected virtual void Tick() {
         Vector2I randomDirection = RandomDirectionDown();
+        wasMovedThisTick = false;
 
         if (Chunk.IsEmpty(Position + Vector2I.Down))
             Chunk.Swap(this, Position + Vector2I.Down);
@@ -109,9 +112,15 @@ public class Element {
         if (!Main.Instance.DebugVisualization) return;
 
         this.color = color;
+        wasMovedThisTick = true;
     }
 
     public void Moved() {
         lastMove = Engine.GetFramesDrawn();
+        wasMovedThisTick = true;
+    }
+
+    public bool WasMoved() {
+        return wasMovedThisTick;
     }
 }

Scripts/Level.cs

@@ -157,9 +157,8 @@ public class Level {
                     for (int y = 0; y < chunkResY; y++) {
                         // TODO: multithreading here! use Chunk.DrawLevel() and stitch images together
 
-                        Element e = chunks[cx, cy].Elements[x, y];
-                        if (e.WasMoved())
-                            image.SetPixel(cx*chunkResX + x, cy*chunkResY + y, e.Color);
+                        if (chunks[cx, cy].Elements[x, y].WasMoved())
+                            image.SetPixel(cx*chunkResX + x, cy*chunkResY + y, chunks[cx, cy].Elements[x, y].Color);
                     }
                 }
             }