Hi all,
I have a ship that I would like to add engine/exhaust sprites to. I used the car code from another post in the forum (see below)
I found a sprite code from here :
http://www.friendsofed.com/download.html?isbn=1590592115
However, I can’t get the sprites attached to the ship. I think it my be the _root syntax, but its a bit too much code for me to internalize at this point. I think I might have one too many onEnterFrames or something like that. Any thoughts?
SPRITE CODE :
c = 10;
this.createEmptyMovieClip("blank_mc", 1);
blank_mc.onEnterFrame = function() {
// step 1: Where's the mouse pointer right now?
currx = car._x;
curry = car._y;
// step 2: If it's not in the same location is was last time
if (!(prevx == currx && prevy == curry)) {
// step 3: Create a new instance of "mc"
_root.attachMovie("mc", "mc"+c, c);
// step 4: Place the instance at the mouse pointer's position and set size of new instance
with (_root["mc"+c]) {
_x = currx;
_y = curry;
_width = 0;
_height = 0;
}
// step 5: Create an enter frame action for each new duplicated mc
this._parent["mc"+this._parent.c].onEnterFrame = function() {
// Set variable to count the number of frames played
this.i++;
// Increase circle by (x) pixels
this._width += 1.4;
this._height += 1.4;
// Decrease alpha by (x) amount
this._alpha -= 100/60;
// If frame reaches 60, remove mc
if (this.i>=60) {
this.removeMovieClip();
}
};
// step 6: Increase the c used for instance names
_root.c++;
}
// step 7: Store where the mouse was, so we can compare that info
// to the position in the next program cycle
prevx = currx;
prevy = curry;
};
ALL OTHER CODE :
/**HITTEST HACK**/
import flash.geom.Point;
import flash.display.BitmapData;
MovieClip.prototype.pixelHitTest = function(mc:MovieClip):Boolean {
var thisBitmap:BitmapData = new BitmapData(this._width, this._height, true, 0);
thisBitmap.draw(this);
var mcBitmap:BitmapData = new BitmapData(mc._width, mc._height, true, 0);
mcBitmap.draw(mc);
if(thisBitmap.hitTest(new Point(this._x, this._y), 0xFF, mcBitmap, new Point(mc._x, mc._y))) {
return true;
}
return false;
}
/**HITTEST HACK**/
/**ALIEN SCRIPT**/
function getdistance(x, y, x1, y1) {
var run, rise;
run = x1-x;
rise = y1-y;
return (_root.hyp(run, rise));
}
function hyp(a, b) {
return (Math.sqrt(a*a+b*b));
}
MovieClip.prototype.reset = function() {
width = 1024;
height = 768;
var dist, norm;
this.x = this._x;
this.y = this._y;
this.speed = Math.random()*4+5;
this.targx = Math.random()*width;
this.targy = Math.random()*height;
dist = _root.getdistance(this.x, this.y, this.targx, this.targy);
norm = this.speed/dist;
this.diffx = (this.targx-this.x)*norm;
this.diffy = (this.targy-this.y)*norm;
};
MovieClip.prototype.move = function() {
if (_root.getdistance(this.x, this.y, this.targx, this.targy)>this.speed) {
this.x += this.diffx;
this.y += this.diffy;
} else {
this.x = this.targx;
this.y = this.targy;
if (!this.t) {
this.t = getTimer();
}
if (getTimer()-this.t>1000) {
this.reset();
this.t = 0;
}
}
this._x = this.x;
this._y = this.y;
};
/**ALIEN SCRIPT**/
/**STAR SCRIPT**/
for (i=0; i<15; i++) {
star.duplicateMovieClip("star"+i, 100+i, {_x:random(1024)+10, _y:random(768)+10, _alpha:random(70)});
this["star"+i+"down"] = true;
}
onEnterFrame = function () {
for (i=0; i<50; i++) {
if (this["star"+i+"down"] == true) {
if (this["star"+i]._alpha<=0) {
this["star"+i+"down"] = false;
}
this["star"+i]._alpha -= (random(40)-10)/5;
} else if (this["star"+i+"down"] == false) {
if (this["star"+i]._alpha>=70) {
this["star"+i+"down"] = true;
}
this["star"+i]._alpha += (random(40)-10)/5;
}
}
};
/**STAR SCRIPT**/
/**SHIP SCRIPT**/
var steeringAbility:Number = 1.3
var maxspeed:Number = 30;
var maxSpeedoRotation:Number = 160;
var accel:Number = -10;
var steer:Number = .08;
var drift:Number = .9;
var speed:Number = 0;
var traction:Number = 10;
var holdArr:Array = [0, 0];
var angle:Number = 1;
var brakeForce:Number = .8;
car.onEnterFrame = function() {
so._rotation = (speed/maxspeed*maxSpeedoRotation)
car._rotation = angle*180/Math.PI;
if (Key.isDown(Key.RIGHT) || Key.isDown(Key.LEFT)) {
angle += (Key.isDown(Key.RIGHT)-Key.isDown(Key.LEFT))*steer*(Math.abs(speed)<10 ? Math.abs(speed)/10 : 1)* steeringAbility;
}
if (!Key.isDown(Key.UP)-Key.isDown(Key.DOWN)) {
car.flames._visible = false;
speed *= drift;
car.ship_glow._alpha = 0;
} else if (Key.isDown(Key.UP)-Key.isDown(Key.DOWN) && !Key.isDown(Key.SPACE)) {
speed = Math.min(Math.max(speed+(Key.isDown(Key.UP)-Key.isDown(Key.DOWN))*.99, accel), maxspeed);
car.ship_glow._alpha = 100;
car.flames._visible = true;
}
Math.abs(speed)<.99 ? speed=0 : null;
if (Key.isDown(Key.SPACE)) {
speed *= brakeForce;
if (speed>1) {
steer = .099;
}
traction = 50/3;
} else {
traction = Math.max(1, Math.abs((speed-10)/3));
steer = .08;
}
speed<0 ? traction=1.0 : null;
car._x -= holdArr[0] += ((Math.cos(angle)*speed)-holdArr[0])/traction;
car._y -= holdArr[1] += ((Math.sin(angle)*speed)-holdArr[1])/traction;
if (car._y < -60) {
car._y = 768;
} else if (car._y >1000) {
car._y = 0
}
if (car._x < -190
) {
car._x = 1024
} else if (car._x > 1255) {
car._x = 0
}
/**ALIEN/CAR HIT TEST**/
if (car.pixelHitTest(alienA)) {
car._x = earth._x
car._y = earth._y
}
/**ALIEN/CAR HIT TEST**/
/**ALIEN/EARTH HIT TEST**/
/**ALIEN/EARTH HIT TEST**/
};
/**SHIP SCRIPT**/
