Create a Flash game like Snowflakes – AS3 version

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As announced in Create a Flash game like Snowflakes, here it is the AS3 version.

I used the same comments to help you understanding the conversion.

package {
	import flash.display.Sprite;
	import flash.ui.Mouse;
	import flash.events.*;
	public class snowflakesas3 extends Sprite {
		// max stars on stage
		var max_stars = 20;
		// current stars on stage
		var stars_on_stage = 0;
		// gravity
		var gravity = 0.1;
		// this is the influence distance
		// using influence and real_influence I perform the square root only once
		// when the distance from the mouse and the star is less than real_influence
		// then the star is affected by the mouse
		var influence = 625;
		var real_influence = Math.sqrt(influence);
		// friction
		var friction = 0.9;
		// divider, to make stars move slowly
		var divider = 50;
		// mouse speed
		var mouse_speed = 0;
		var playersprite:pointer = new pointer();
		public function snowflakesas3() {
			// mouse cursor replacement
			Mouse.hide();
			playersprite.addEventListener(Event.ENTER_FRAME,playersprite_enterframe);
			addChild(playersprite);
			addEventListener(Event.ENTER_FRAME,main_enterframe);
		}
		// function to be executed by the mouse pointer
		public function playersprite_enterframe(event:Event) {
			// calculating the distance from the last point the mouse was spotted
			// and the current mouse position
			var dist_x = playersprite.x-mouseX;
			var dist_y = playersprite.y-mouseY;
			mouse_speed = Math.sqrt(dist_x*dist_x+dist_y*dist_y);
			// minimum speed = minimum force applied
			if (mouse_speed<0.2) {
				mouse_speed = 0.2;
			}// updating pointer position
			playersprite.x = mouseX;
			playersprite.y = mouseY;
		}
		// main function
		public function main_enterframe(event:Event) {
			// should I add a star?
			if (stars_on_stage300) {
				stars_on_stage--;
				current_star.removeEventListener(Event.ENTER_FRAME,starsprite_enterframe);
				removeChild(current_star);
			}
		}
	}
}

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215 GAME PROTOTYPES EXPLAINED WITH SOURCE CODE
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