5 files changed, 12 insertions, 2 deletions
diff --git a/core/src/ch/asynk/gdx/boardgame/Drawable.java b/core/src/ch/asynk/gdx/boardgame/Drawable.java
index 8c53e62..873e47f 100644
--- a/core/src/ch/asynk/gdx/boardgame/Drawable.java
+++ b/core/src/ch/asynk/gdx/boardgame/Drawable.java
@@ -6,5 +6,6 @@ import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
 public interface Drawable
 {
     public void draw(Batch batch);
+    default public void setAlpha(float alpha) { }
     default public void drawDebug(ShapeRenderer debugShapes) { }
 }
diff --git a/core/src/ch/asynk/gdx/boardgame/Paddable.java b/core/src/ch/asynk/gdx/boardgame/Paddable.java
index 344c4ff..988d344 100644
--- a/core/src/ch/asynk/gdx/boardgame/Paddable.java
+++ b/core/src/ch/asynk/gdx/boardgame/Paddable.java
@@ -7,5 +7,6 @@ public interface Paddable
     public float getInnerWidth();
     public float getInnerHeight();
     public void setPadding(float padding);
+    public void setPosition(float x, float y, float w, float h);
 }
 
diff --git a/core/src/ch/asynk/gdx/boardgame/Positionable.java b/core/src/ch/asynk/gdx/boardgame/Positionable.java
index d16f5ce..30128ac 100644
--- a/core/src/ch/asynk/gdx/boardgame/Positionable.java
+++ b/core/src/ch/asynk/gdx/boardgame/Positionable.java
@@ -6,5 +6,7 @@ public interface Positionable
     public float getY();
     public float getWidth();
     public float getHeight();
-    public void setPosition(float x, float y, float w, float h);
+    public void centerOn(float cx, float cy);
+    public void translate(float dx, float dy);
+    public void setPosition(float x, float y);
 }
diff --git a/core/src/ch/asynk/gdx/boardgame/Rotable.java b/core/src/ch/asynk/gdx/boardgame/Rotable.java
new file mode 100644
index 0000000..789ce3d
--- /dev/null
+++ b/core/src/ch/asynk/gdx/boardgame/Rotable.java
@@ -0,0 +1,6 @@
+package ch.asynk.gdx.boardgame;
+
+public interface Rotable
+{
+    public void setRotation(float rotation);
+}
diff --git a/core/src/ch/asynk/gdx/boardgame/Scalable.java b/core/src/ch/asynk/gdx/boardgame/Scalable.java
index cf430ca..3cf63be 100644
--- a/core/src/ch/asynk/gdx/boardgame/Scalable.java
+++ b/core/src/ch/asynk/gdx/boardgame/Scalable.java
@@ -1,6 +1,6 @@
 package ch.asynk.gdx.boardgame;
 
-public interface Scalable extends Drawable
+public interface Scalable
 {
     public void setScale(float scale);
 }