Add animated sprite

Author: Mike Barkmin

src/eu/barkmin/processing/scratch/ScratchAnimatedSprite.java

@@ -1,4 +1,64 @@
 package eu.barkmin.processing.scratch;
 
-public class ScratchAnimatedSprite {
+import java.util.HashMap;
+
+public class ScratchAnimatedSprite extends ScratchSprite {
+
+    private HashMap<String, String[]> animations = new HashMap<>();
+    private int animationInterval = 120;
+    private int animationFrame = 0;
+    private boolean animationPlayed = false;
+
+    public void addAnimation(String name, String pattern, int frames) {
+        String[] animation = new String[frames];
+        for (int i = 0; i < animation.length; i++) {
+            String costumeName = "_animation_" + name + "_" + i;
+            String file = String.format(pattern, i+1);
+            this.addCostume(costumeName,  file);
+            animation[i] = costumeName;
+        }
+        animations.put(name, animation);
+    }
+
+    public void playAnimation(String name) {
+        this.playAnimation(name,false);
+    }
+
+    public void playAnimation(String name, boolean once) {
+        if (this.getTimer("animation") == null) {
+            this.addTimer("animation");
+        }
+        if (this.getTimer("animation").everyMillis(animationInterval)) {
+            String[] animation = animations.get(name);
+            if (!animationPlayed && animationFrame != animation.length - 1 || !once) {
+                animationFrame = (animationFrame + 1) % animation.length;
+                this.switchCostume(animation[animationFrame]);
+            }
+        }
+    }
+
+    public void resetAnimation() {
+        animationFrame = 0;
+        animationPlayed = false;
+    }
+
+    public void setAnimationInterval(int interval) {
+        animationInterval = interval;
+    }
+
+    public int getAnimationInterval() {
+        return animationInterval;
+    }
+
+    public int getAnimationFrame() {
+        return animationFrame;
+    }
+
+    public void setAnimationFrame(int frame) {
+        animationFrame = frame;
+    }
+
+    public boolean isAnimationPlayed() {
+        return animationPlayed;
+    }
 }