Tutorial: How to Create Animations

How to Create Animations with Sprite Indexes:

1. Take an image with animations.
   Here is an example fireball 128x16 px image, each animation step is 16x16 px:
   

2. Add and load it to the project:

   this.iLoader.addImage("image_key", "./fireball128x16.png");
   

3. Create an 16x16 DrawImageObject with the same key:

   const posX = 100;
   const posY = 200;
   const imageW = 16;
   const imageH = 16;
   
   this.fireball = this.draw.image(posX, posY, imageW, imageH, "image_key");
   

4. Add an animation event:

   this.fireball.addAnimation("startAnimation", [0,1,2,3], isLoop = false);
   

5. Start the animation by emitting the event:

   this.fireball.emit("startAnimation");
   

   This will run through the image indexes 0,1,2,3.

6. To loop the animation indexes, add a third parameter as true:

   this.fireball.addAnimation("startAnimation", [0,1,2,3], true);
   

   The animation will continue looping until stopRepeatedAnimation() is called or the object is destroyed:

   this.fireball.stopRepeatedAnimation("startAnimation");
   

7. The fourth parameter determines how many cycles each frame is shown.
   The default value is 1. If you want to make the animation slower, increase this value:

   this.fireball.addAnimation("startAnimation", [0,1,2,3], true, 5);
   

8. In jsge@1.4.0, frame time support was added. Instead of an array of IDs,
   you can now add an array of objects:

   this.fireball.addAnimation("startAnimation", [{duration: 150, id:0},{duration:100, id:1},{ duration:100, id:2},{duration:100, id:3}], true);
   

   Here, duration is the frame time in milliseconds.

Tiled animations support.

Live example

See the Pen Untitled by Arturas-Alfredas Lapinskas (@yaalfred) on CodePen.