JSDoc: Tutorial: How to Create Animations

How to Create Animations with Sprite Indexes:

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

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

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");

Add an animation event:

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

Start the animation by emitting the event:
```
this.fireball.emit("startAnimation");
```
This will run through the image indexes 0,1,2,3.
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");
```
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);
```
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.

Live example

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