ImpactJS Plugins

Plugins for the Impact JS library

• Debug Display
• HTML Button
• Sprite tween

To use, pull down the repository and place the files in a folder called 'empika' inside your plugins directory. e.g. /lib/plugins/empika/.

Debug Display

	ig.module( 
		'game.main' 
	)
	.requires(
		'impact.game',
		'impact.font',
		'plugins.empika.debug_display' // require the debug display plugin
	)
	.defines(function(){
		MyGame = ig.Game.extend({
			font: new ig.Font( 'media/04b03.font.png' ),
			init: function() {
				// create a new DebugDisplay, pass in your font
				this.debugDisplay = new DebugDisplay( this.font );
			},
			update: function() {
				this.parent();
			},
			draw: function() {
				this.parent();
				var x = ig.system.width/2, y = ig.system.height/2;
				// this.debugDisplay.draw(info, display_fps, display_average, average_time, interval_count)
				// info, array:							this will display each array element on a new line
				// display_fps, bool:				pass in true or false to either show the FPS or not. defaults to true
				// display_average, bool: 	pass in true or false to either show the average FPS over a period of time or not. 
				//													defaults to false
				// average_time, integer: 	amount of of time between samples. defaults to 10000 (10 seconds)
				// interval_count, integer:	amount of samples to take over time. defaults to 500
				this.debugDisplay.draw(["my", "info", "here"], true, true, 10000, 100);
			}
		});
		ig.main( '#canvas', MyGame, 60, 512, 384, 2 );
	});

HTML Buttons

main.js

	ig.module( 
		'game.main' 
	)
	.requires(
		'impact.game',
		'plugins.empika.html_button',
		'game.entities.button'
	)
	.defines(function(){

	MyGame = ig.Game.extend({
		init: function() {
			// ig.input.bindTouch( element_name, mousedown_func, mouseup_func, click_func  );
			// element_name, string:		name of an element, required. eg '#button'
			// mousedown_func, string:	name of a function to call on mouse down, defaults to false
			// mouseup_func, string:		name of a function to call on mouse up, defaults to false
			// click_func, string:			name of a function to call on mouse click, defaults to false
			ig.input.bindTouch( '#button', 'btndown', 'btnup', 'btnclick' );
		},
		update: function() {
			this.parent();
		},
		draw: function() {
			// Draw all entities and backgroundMaps
			this.parent();
			// Add your own drawing code here
			var x = ig.system.width/2, y = ig.system.height/2;
		}
	});

game.entities.button.js

	ig.module(
	  'game.entities.button'
	)
	.requires(
	  'impact.entity'
	)
	.defines(function() {
	  EntityButton = ig.Entity.extend({  	
	  	init: function( x, y, settings ) {
	        this.parent( x, y, settings );
	    },
	    update: function(){
	      if( ig.input.pressed('btndown')){
	       console.log("button log down"); 
	      }
	      if( ig.input.pressed('btnup')){
	       console.log("button log up"); 
	      }
	      if( ig.input.pressed('btnclick')){
	       console.log("button log click"); 
	      }
	    }
	  });
	});

Entity Tweening

game.entities.player.js

    ig.module('game.entities.player')
    .requires(
      'impact.entity',
      'plugins.empika.entity_tween'
    )
    .defines(function () {
      EntityPlayer = ig.Entity.extend({
        init: function(x,y,settings){
            this.parent(x,y,settings);
            // actions object
            // actions, array:  An array of action objects
            // post_anim, string: The animation to revert to after the animation has finished
            
            // action objects
            // x, integer:  Translation along the x axis
            // y, integer:  Translation along the y axis
            // duration, float: The time that the tween will take
            // anim, string:    The name of the animation to use during the tween
            // easing, Tween object: The ease factore applied to the tween. See the source for a full list.
            // Many thanks to https://github.com/nefD and https://github.com/xdissent for these
            // callback, function: a function to call once the tween action has completed
            // callback_args, array: an array of arguments to pass in to the callback function
            actions = {actions: [
              { x: 15, y: 10, duration: 2, anim: 'walk', easing: ig.Tween.Easing.Cubic.EaseIn },
              { x: 0, 
                y: 0,
                duration: 5,
                anim: 'idle',
                callback: function(){
                  console.log(arguments[0], arguments[1]);
                }, 
                callback_args: ["argument 1", "argument 2"],
              },
              { x: -15, y: -10, duration: 2, anim: 'idle', easing: ig.Tween.Easing.Cubic.EaseOut }
            ], post_anim: 'idle'};
            
            // Add the actions to the entity
            this.initialize_animations(actions);
            
            // Kick off the Tweening
            this.anim_start();
        }
      });
    });

index.html

<!DOCTYPE html>
<html>
<head>
	<title>Impact Game</title>
	<style type="text/css">
		html,body {	background-color: #000; color: #fff; font-family: helvetica, arial, sans-serif; margin: 0; padding: 0; font-size: 12pt; }
		#canvas { position: absolute; left: 0; right: 0; top: 0; bottom: 0; margin: auto; border: 1px solid #555; }
		.button {
			background-image: url(media/soldier_sprite.png); background-repeat: no-repeat; width: 64px; height: 64px; position: absolute; bottom: 0px;
			-webkit-touch-callout: none; -webkit-user-select: none; -webkit-tap-highlight-color: rgba(0,0,0,0); -webkit-text-size-adjust: none;
			-moz-background-size: 256px; background-size: 256px; image-rendering:-moz-crisp-edges; -ms-interpolation-mode:nearest-neighbor;
		}
		#button { left: 0; background-position: 0, 0; }
	</style>

	<script type="text/javascript" src="lib/impact/impact.js"></script>
	<script type="text/javascript" src="lib/game/main.js"></script>
</head>
<body>
	<canvas id="canvas"></canvas>
	<div class="button" id="button"></div>
</body>
</html>