var MAX_FISH = 4;


var FishTank = {

	fish : [],

	/** 
	 *	Initialization of fish
	 */
	init : function() {
		for (var idx = 0; idx < MAX_FISH; ++idx) {
			FishTank.fish.push(new fish_instance());
		}
	},
	
	/** 
	 *	Move all the fish
	 */
	move : function(steps) {
		for (var idx = 0; idx < FishTank.fish.length; ++idx) {
			FishTank.fish[idx].move_step(steps);
		}
	},
	
	/**
	 *	Draw all the fish
	 */
	draw : function(context) {
		for (var idx = 0; idx < FishTank.fish.length; ++idx) {
			FishTank.fish[idx].draw_fish(context);
		}
	}	

};