v2.0.0

The Processing library Scratch changed owners. It is now hosted under the OpenPatch organization, therefore the package name change. You can now access the classes of this library like so:

import org.openpatch.scratch.*

v1.15.0

The Standalone Release

This release does not change the behaviour of the Processing library!

You can now use the scratch-standalone.jar for using this library in any Java environment. When you use this library outside of processing, you have to create a new object of the class ScratchStage. The init-method will only work in Processing.

import eu.barkmin.processing.scratch.*;

public class MyProgram
{
    public MyProgram() {
        ScratchStage s = new ScratchStage(800, 400);
        s.addSprite(new Cat());   
    }
}

class Cat extends ScratchSprite
{
  public Cat() {
    this.addCostume("sitzen", "sprites/cat.png");
    this.setOnEdgeBounce(true);
  }
  
  public void run() {
      this.move(1);
  }
}

You can also use this library outside of Processing in a more imperative way, similar to Shapes and Sprites. For this to work, the wait-method was added to the ScratchStage class.

import eu.barkmin.processing.scratch.*;

public class MyProgram
{
    public MyProgram() {
        ScratchStage s = new ScratchStage(400, 400);
        ScratchSprite cat = new ScratchSprite(
            "sitzen", "sprites/cat.png"
        );
        s.addSprite(cat);
        
        cat.setOnEdgeBounce(true);
        
        while(!s.isKeyPressed(27)) {
            cat.move(1);
            s.wait(100);
        }
    }
}

v1.14.2

• Remove System.out.print statements

v1.14.1

• improve ScratchText rendering

v1.14.0

• add think and say to ScratchSprite
• add display to ScratchStage
• add whenClicked to Sprite
• add whenBackdropSwitches to Sprite

v1.13.1

• Optimize image loading

v1.13.0

• add stage.removeSprites
• add stage.findSprites
• use CopyOnWriteArrayList instead of ArrayList

v1.12.0

Changelog

• Enhancement: Add pickRandom method 2821c70
• Enhancement: Add ScratchAnimatedSprite 3e02e91
• Enhancement: Allow pressing two keys simultaneously ffa504b
• Fix: Transparency detection 8f5bd06
• Fix: Null pointer exception when sound is loading 081680c

v1.11.0

Changelog

• add method raiseSprite to stage
• add method lowerSprite to stage
• add method removeBackdrop to stage
• update docs

v1.10.0

Simplify the usage of sprites by remove the usage of super.

You can now simply add a sprite to the stage by stage.addSprite(sprite). This means that the draw method of the sprite will be implicit called. To change the behavior of the sprite override the run-method.

Before (and still possible):

MySprite mySprite;

void setup() {
    ScratchStage.init(this);
    mySprite = new MySprite();
}

void draw() {
   mySprite.draw();
}

class MySprite extends ScratchSprite {
   void draw() {
       super.draw();
       this.move();
   }
}

After:

ScratchStage stage;

void setup() {
    ScratchStage.init(this);
    stage = ScratchStage.getInstance()
    stage.addSprite(new MySprite());
}

void draw() {}

class MySprite extends ScratchSprite {
   void run() {
       this.move();
   }
}

Changelog

• Add method run to ScratchSprite
• Add method whenKeyPressed to ScratchSprite
• Add method whenMouseMoved to ScratchSprite
• Add method addSprite to ScratchStage
• Add methode removeSprite to ScratchStage