particle engine 2 - starShip

[NiñoScript]

and another entry by NiñoScript, Hooray!

CONTROLS:

_root._ymouse = affects the speed of the spaceShip;

Key.SPACE = creates a hi gravity point in the middle of the universe (aka blackhole), atracting the stars to it, but in this fake world, stars can scape that atraction after some fighting.[/size]


i hope you like it



edit:
it looks weird when i see it in my browser, maybe becouse of the "noScale", dunno... if u want it to look like it should, just make a new document in flash and paste my code

another edit:
ok, i removed the "noScale" to add it to the forum, now it works ok

[NiñoScript]

Stage.scaleMode = "noScale";
//1
//{speed:{x:0, y:0}, x:Stage.width/2-random(100)+50, y:Stage.height/2-random(100)+50}
starArray = [{speed:{x:0, y:0}, x:Stage.width/2-random(100)+50, y:Stage.height/2-random(100)+50}];
//2
function drawStar(p) {
	_root.change({func:"moveTo", value:[p.p.x-p.old.x*2, p.p.y-p.old.y*2]}).change({func:"lineTo", value:[p.p.x, p.p.y]});
	//3
}
Object.prototype.change = function(what:Object, who) {
	/*
	.change({property:"", value:})
	or
	.change({func:"", value:[]})
	*/
	what.func == undefined ? this[what.property]=what.value : this[what.func](what.value[0], what.value[1]);
	//4
	return !who ? this : who;
	//5
};
function moveStar(p, i) {
	p.speed.change({property:"x", value:p.speed.x+Math.cos(Math.atan2(p.y-Stage.height/2, p.x-Stage.width/2))*speed/100}).change({property:"y", value:p.speed.y+Math.sin(Math.atan2(p.y-Stage.height/2, p.x-Stage.width/2))*speed/100}, p).change({property:"oldx", value:p.x}).change({property:"oldy", value:p.y}).change({property:"x", value:p.x>Stage.width+20 or p.x<-20 ? starArray[i]={speed:{x:0, y:0}, x:Stage.width/2-random(100)+50, y:Stage.height/2-random(100)+50} : p.x+p.speed.x}).change({property:"y", value:p.y>Stage.height+20 or p.y<-20 ? starArray[i]={speed:{x:0, y:0}, x:Stage.width/2-random(100)+50, y:Stage.height/2-random(100)+50} : p.y+p.speed.y});
	//6
	return {old:{x:p.x-p.oldx, y:p.y-p.oldy}, p:p};
	//7
}
onEnterFrame = function () {
	speed = Key.isDown(Key.SPACE) ? -150 : _ymouse;
	//8
	starArray.length<30 ? starArray.push({speed:{x:0, y:0}, x:Stage.width/2-random(100)+50, y:Stage.height/2-random(100)+50}) : null;
	//9
	_root.change({func:"clear", value:null}).change({func:"lineStyle", value:[0]});
	for (var i = 0; i<starArray.length; i++) {
		//10
		drawStar(moveStar(starArray[i], i));
		//11
	}
};

[hybrid101]

i'm definitely liking this! nice one, ninoscript!

[Seb Hughes]

nifty

[NiñoScript]

now it reacts to the FPS, and the number of lines hasn't changed

that means that in each computer, the number of stars will adapt so the FramesPerSecond dont go down from 36 app

var fps = {variable:0, fps:100, constant:36, starArray:[{speed:{x:0, y:0}, x:Stage.width/2-random(100)+50, y:Stage.height/2-random(100)+50}]};
//1
function drawStar(p) {
	_root.change({func:"moveTo", value:[p.p.x-p.old.x*2, p.p.y-p.old.y*2]}).change({func:"lineTo", value:[p.p.x, p.p.y]});
	//2
}
Object.prototype.change = function(what:Object, who) {
	/*
	.change({property:"", value:})
	or
	.change({func:"", value:[]})
	*/
	what.func == undefined ? this[what.property]=what.value : this[what.func](what.value[0], what.value[1]);
	//3
	return !who ? this : who;
	//4
};
function moveStar(p, i) {
	p.speed.change({property:"x", value:p.speed.x+Math.cos(Math.atan2(p.y-Stage.height/2, p.x-Stage.width/2))*speed/100}).change({property:"y", value:p.speed.y+Math.sin(Math.atan2(p.y-Stage.height/2, p.x-Stage.width/2))*speed/100}, p).change({property:"oldx", value:p.x}).change({property:"oldy", value:p.y}).change({property:"x", value:p.x>Stage.width+20 or p.x<-20 ? (fps.fps<fps.constant*2/3 ? (fps.starArray.splice(i, 1), fps.fps += 2) : (fps.starArray[i]={speed:{x:0, y:0}, x:Stage.width/2-random(100)+50, y:Stage.height/2-random(100)+50})) : p.x+p.speed.x}).change({property:"y", value:p.y>Stage.height+20 or p.y<-20 ? (fps.fps<fps.constant*2/3 ? (fps.starArray.splice(i, 1), fps.fps += 2) : (fps.starArray[i]={speed:{x:0, y:0}, x:Stage.width/2-random(100)+50, y:Stage.height/2-random(100)+50})) : p.y+p.speed.y});
	//5
	return {old:{x:p.x-p.oldx, y:p.y-p.oldy}, p:p};
	//6
}
onEnterFrame = function () {
	fps.fps>fps.constant ? fps.starArray.push({speed:{x:0, y:0}, x:Stage.width/2-random(100)+50, y:Stage.height/2-random(100)+50}) : null;
	//7
	fps.change({property:"variable", value:fps.variable+1}, _root).change({property:"speed", value:Key.isDown(Key.SPACE) ? -150 : _ymouse}).change({func:"clear", value:null}).change({func:"lineStyle", value:[0]});
	//8
	for (var i = 0; i<fps.starArray.length; i++) {
		//9
		drawStar(moveStar(fps.starArray[i], i));
		//10
	}
};
setInterval(function () {
	fps.change({property:"fps", value:fps.variable}).change({property:"variable", value:0});
	//11
}, 1000);
//12?

[Sinister Shadow]

Nice!

[Deril]

Mines looks better..

http://www.kirupa.com/forum/showthread.php?t=205315



we used similar concept..

[NiñoScript]

im a copycat,

but, only mine makes you feel like if you were goin' fast

edit: only mine has a black hole in the middle of the universe too

[Deril]

bah..

its all for fun for me anywhay..

do your best and good luck..!

[gvozden]

this two have nothing in common
one is profesional
but why do you have so many vertical and horizontal lines on upper and right edge of SWF file?

[NiñoScript]

why do you have so many vertical and horizontal lines on upper and right edge of SWF file?

i don't know... that's a bug

this two have nothing in common
one is profesional

which one?

[033126B]

wow... nice one.. i dont even know how to use prototype! can some one teach me!!!???

[NiñoScript]

of course, i can
just pm me

[NiñoScript]

this two have nothing in common
one is profesional
but why do you have so many vertical and horizontal lines on upper and right edge of SWF file?

btw... almost 2 years later, i still would like to know which one is the proffesional one