Hello,
I have loaded one entity on the ig.game init and i want to chnage the alpha of each pixel pressed by the mouse to discover the background.
how i can do that ?
there is my code :

TotemGame	= ig.Game.extend({
		first		: null,
		clearColor	: '#FFFFFF',
		white		: new ig.Image('media/white.png'),
		euro1		: new ig.Image('media/euro1.png'),
		init		: function(){	
			
			ig.input.bind(ig.KEY.MOUSE1, 'scratch');							// Ecouteur de la souris
			this.white.draw(0,0);			
			this.euro1.draw(0,0);
			this.first	= this.spawnEntity(FirstEntity,160,240);			
			
				
		},
		update		: function(){
			if(ig.input.state('scratch'))
			{
				console.log('X :'+ig.input.mouse.x+' Y :'+ig.input.mouse.y);
			}			
		}
	});
	ig.main('#canvas', TotemGame, 60, 320, 480, 1);

Thank you