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меня ещё интересуют заносы

Вот так можно:

import flash.display.MovieClip;
import flash.events.KeyboardEvent;
import flash.ui.Keyboard;
import flash.events.Event;
import flash.geom.Point;
 
var ship:MovieClip;
 
var ship_speed_xy:Point = new Point( 0, 0 );
var motion_speed:Number = 0;
var motion_speed_xy:Point = new Point( 0, 0 );
var motion_switch:int = 0;
var motion_angle:Number = 0;
 
var rotation_speed:Number = 0;
var rotation_switch:int = 0;
var skid_rotation:Number = 0;
 
const SKID_DELAY:Number = 0.05;
const MOTION_ACCELERATION:Number = 1;
const MOTION_SPEED_MAX:Number = 10;
const MOTION_RESISTANCE:Number = 0.95;
 
const ROTATION_ACCELERATION:Number = 1;
const ROTATION_SPEED_MAX:Number = 5;
const ROTATION_RESISTANCE:Number = 0.8;
 
stage.addEventListener( Event.ENTER_FRAME, update );
stage.addEventListener( KeyboardEvent.KEY_DOWN, keyDownUpHandler );
stage.addEventListener( KeyboardEvent.KEY_UP, keyDownUpHandler );
 
function update( e:Event ):void
{
	rotateShip();
	moveShip();
	frameLimits();
}
 
function rotateShip():void
{
	rotation_speed += ROTATION_ACCELERATION * rotation_switch;
 
	if ( rotation_speed * rotation_switch > ROTATION_SPEED_MAX )
		rotation_speed = ROTATION_SPEED_MAX * rotation_switch;
 
	ship.rotation += rotation_speed;
 
	if ( rotation_switch == 0 )
		rotation_speed *= ROTATION_RESISTANCE;
}
 
function moveShip():void
{
	motion_speed += MOTION_ACCELERATION * motion_switch;
 
	if ( motion_speed * motion_switch > MOTION_SPEED_MAX )
		motion_speed = MOTION_SPEED_MAX * motion_switch;
 
	if ( motion_switch != 0 )
		skid_rotation = ship.rotation;
 
	motion_angle = skid_rotation * Math.PI / 180;
	motion_speed_xy.x = Math.sin( motion_angle ) * motion_speed;
	motion_speed_xy.y = -Math.cos( motion_angle ) * motion_speed;
 
	ship_speed_xy.x += ( motion_speed_xy.x - ship_speed_xy.x ) * SKID_DELAY;
	ship_speed_xy.y += ( motion_speed_xy.y - ship_speed_xy.y ) * SKID_DELAY;
 
	ship.x += ship_speed_xy.x;
	ship.y += ship_speed_xy.y;
 
	if ( motion_switch == 0 )
		motion_speed *= MOTION_RESISTANCE;
}
 
function frameLimits():void
{
	if ( ship.x > stage.stageWidth )
		ship.x = 0;
	else if ( ship.x < 0 )
		ship.x = stage.stageWidth;
 
	if ( ship.y > stage.stageHeight )
		ship.y = 0;
	else if ( ship.y < 0 )
		ship.y = stage.stageHeight;
}
 
function keyDownUpHandler( e:KeyboardEvent ):void
{
	switch ( e.keyCode )
	{
		case Keyboard.UP:
		case Keyboard.W:
			if ( e.type == KeyboardEvent.KEY_DOWN )
				motion_switch = 1;
			else
				motion_switch = 0;
			break;
 
		case Keyboard.DOWN:
		case Keyboard.S:
			if ( e.type == KeyboardEvent.KEY_DOWN )
				motion_switch = -1;
			else
				motion_switch = 0;
			break;
 
		case Keyboard.LEFT:
		case Keyboard.A:
			if ( e.type == KeyboardEvent.KEY_DOWN )
				rotation_switch = -1;
			else
				rotation_switch = 0;
			break;
 
		case Keyboard.RIGHT:
		case Keyboard.D:
			if ( e.type == KeyboardEvent.KEY_DOWN )
				rotation_switch = 1;
			else
				rotation_switch = 0;
			break;
	}
}

ship.swf   (1.9 Кб)