Initial commit

2026-10-24 02:12:36 +00:00 · 2018-09-30 06:17:31 +02:00
commit 96ce7c0dce
75 changed files with 10420 additions and 0 deletions
@@ -0,0 +1,130 @@
+ig.module(
+	'impact.animation'
+)
+.requires(
+	'impact.timer',
+	'impact.image' 
+)
+.defines(function(){ "use strict";
+
+ig.AnimationSheet = ig.Class.extend({
+	width: 8,
+	height: 8,
+	image: null,
+	
+	init: function( path, width, height ) {
+		this.width = width;
+		this.height = height;
+		
+		this.image = new ig.Image( path );
+	}
+});
+
+
+
+ig.Animation = ig.Class.extend({
+	sheet: null,
+	timer: null,
+	
+	sequence: [],	
+	flip: {x: false, y: false},
+	pivot: {x: 0, y: 0},
+	
+	frame: 0,
+	tile: 0,
+	loopCount: 0,
+	alpha: 1,
+	angle: 0,
+	
+	
+	init: function( sheet, frameTime, sequence, stop ) {
+		this.sheet = sheet;
+		this.pivot = {x: sheet.width/2, y: sheet.height/2 };
+		this.timer = new ig.Timer();
+
+		this.frameTime = frameTime;
+		this.sequence = sequence;
+		this.stop = !!stop;
+		this.tile = this.sequence[0];
+	},
+	
+	
+	rewind: function() {
+		this.timer.set();
+		this.loopCount = 0;
+		this.frame = 0;
+		this.tile = this.sequence[0];
+		return this;
+	},
+	
+	
+	gotoFrame: function( f ) {
+		// Offset the timer by one tenth of a millisecond to make sure we
+		// jump to the correct frame and circumvent rounding errors
+		this.timer.set( this.frameTime * -f - 0.0001 );
+		this.update();
+	},
+	
+	
+	gotoRandomFrame: function() {
+		this.gotoFrame( Math.floor(Math.random() * this.sequence.length) )
+	},
+	
+	
+	update: function() {
+		var frameTotal = Math.floor(this.timer.delta() / this.frameTime);
+		this.loopCount = Math.floor(frameTotal / this.sequence.length);
+		if( this.stop && this.loopCount > 0 ) {
+			this.frame = this.sequence.length - 1;
+		}
+		else {
+			this.frame = frameTotal % this.sequence.length;
+		}
+		this.tile = this.sequence[ this.frame ];
+	},
+	
+	
+	draw: function( targetX, targetY ) {
+		var bbsize = Math.max(this.sheet.width, this.sheet.height);
+		
+		// On screen?
+		if(
+		   targetX > ig.system.width || targetY > ig.system.height ||
+		   targetX + bbsize < 0 || targetY + bbsize < 0
+		) {
+			return;
+		}
+		
+		if( this.alpha != 1) {
+			ig.system.context.globalAlpha = this.alpha;
+		}
+		
+		if( this.angle == 0 ) {		
+			this.sheet.image.drawTile(
+				targetX, targetY,
+				this.tile, this.sheet.width, this.sheet.height,
+				this.flip.x, this.flip.y
+			);
+		}
+		else {
+			ig.system.context.save();
+			ig.system.context.translate(
+				ig.system.getDrawPos(targetX + this.pivot.x),
+				ig.system.getDrawPos(targetY + this.pivot.y)
+			);
+			ig.system.context.rotate( this.angle );
+			this.sheet.image.drawTile(
+				-this.pivot.x, -this.pivot.y,
+				this.tile, this.sheet.width, this.sheet.height,
+				this.flip.x, this.flip.y
+			);
+			ig.system.context.restore();
+		}
+		
+		if( this.alpha != 1) {
+			ig.system.context.globalAlpha = 1;
+		}
+	}
+});
+
+});