Forked from:: gyuque's なんとかディウスっぽい背景

なんとかディウスっぽい蟹さん forked from: なんとかディウスっぽい背景

左右キーとスペースで操作できます

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favorite:4
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license : All rights reserved
modified : 2008-12-24 00:07:03

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// forked from gyuque's なんとかディウスっぽい背景

// 左右キーとスペースで操作できます
package
{
	import flash.display.*;
	import flash.geom.*;
	import flash.events.*;
	import flash.ui.*;

[SWF(width="320", height="240", backgroundColor="0x000000", frameRate="30")]
	public class Nemesis extends Sprite
	{
		public static const W:int = 320;
		public static const H:int = 240;

private var mBGen:MountainGen = new MountainGen(80);
		private var mTGen:MountainGen = new MountainGen(80, 1);
		
		private var mScreenBmp:Bitmap;
		private var mScreen:BitmapData = new BitmapData(W, H, false, 0);
		private var mBGScreen:BitmapData = new BitmapData(W, H, true, 0);
		
		private var mStarbg:StarBG = new StarBG(W, H, 50);
		private var mKani:Kani;
		private var legs:Array = new Array();
		
		private var count:int = 0;
		
		function Nemesis()
		{
			mScreenBmp = new Bitmap(mScreen);
			addChild(mScreenBmp);
			
			mBGen.step();
			mTGen.step();
			for(var i:int = 0; i < W; i++)
			{
				mBGen.step();
				mTGen.step();
				mBGen.draw(mBGScreen, i, 160);
				mTGen.draw(mBGScreen, i, 0, false);
			}
			
			legs.push(new Leg(-80, 1));
			legs.push(new Leg(  0, 1));
			legs.push(new Leg( 80, 1));
			legs.push(new Leg(-80, -1));
			legs.push(new Leg(  0, -1));
			legs.push(new Leg( 80, -1));
			
			mKani = new Kani(legs);
			
			addEventListener(Event.ENTER_FRAME, tick);
			stage.addEventListener(KeyboardEvent.KEY_DOWN, Key.onKeyDownHandler);
			stage.addEventListener(KeyboardEvent.KEY_UP, Key.onKeyUpHandler);
		}
		
		private function tick(e:Event):void
		{
			var leg:Leg;
			
			mStarbg.main();
			mKani.main();
			
			if(count % 2 == 0) {scroll(1);}
			count++;
			
			//描画
			mScreen.fillRect(mScreen.rect, 0);
			mStarbg.draw(mScreen);
			
			var matrix:Matrix = new Matrix();
			for each(leg in legs)
			{
				matrix.translate(leg.x, leg.y);
				mScreen.draw(leg.sprite, matrix);
				matrix.identity();
			}
			matrix.translate(mKani.x, mKani.y);
			mScreen.draw(mKani, matrix);
			
			mScreen.copyPixels(mBGScreen, mScreen.rect, new Point(0, 0));
			
			//当たり判定
			for each(leg in legs) {
				leg.hitflag = mBGScreen.getPixel32(leg.x, leg.y) != 0x00000000;
			}
		}
		
		public function scroll(vx:int):void
		{
			mBGScreen.scroll(-vx, 0);
			mBGScreen.fillRect(new Rectangle(W-vx, 0, vx, H), 0);
			
			var i:int;
			mBGen.step();
			mTGen.step();
			
			for (i = 0; i < vx; i++)
			{
				mBGen.step();
				mTGen.step();
				mBGen.draw(mBGScreen, W-vx+i, 160);
				mTGen.draw(mBGScreen, W-vx+i, 0, false);
			}
			
			mKani.x -= vx;
			for each(var leg:Leg in legs) {leg.x -= vx;}
		}
	}
}

import flash.display.*;
import flash.events.*;
import flash.geom.*;
import flash.ui.*;

class Kani extends Sprite
{
	public var body:Body = new Body();
	public var legs:Array = new Array();
	
	public var auto:Boolean;
	public var dir:String = "none";
	public var timer:int;
	public var dance:int;
	
	function Kani(legs:Array)
	{
		x = 200;
		y = 120;
		
		auto = false;
		timer = 100;
		
		this.legs = legs;
		for each(var leg:Leg in legs)
		{
			leg.parent = this;
			leg.x = x+leg.offset - 20+Math.random()*40;
			leg.y = 120 + 100*leg.invert;
		}
		
		addChild(body);
	}
	
	public function main():void
	{
		var leg:Leg;
		
		if(auto == false)
		{
			if(Key.isLeft == true) {dir = "left"; timer = 90;}
			else if(Key.isRight == true) {dir = "right"; timer = 90;}
			else {dir = "none";}
			
			if(Key.isSpace == true && dance == 0) {dance = 20; timer = 90;}
			
			timer--;
			if(timer == 0) {auto = true;}
		}
		if(auto == true)
		{
			if(timer == 0)
			{
				if(dir == "none")
				{
					if(x < 160) {dir = "right";}
					else {dir = "left";}
				}
				else {
					if(x < 50 && dir != "right") {
						timer = 60;
					}
					if(x > 300 && dir != "left") {
						timer = 60;
					}
				}
			}
			else {
				dir = "none";
				if(timer == 40) {
					dance = 20;
				}
				timer--;
			}
			
			if(Key.isLeft == true || Key.isRight == true)
			{
				auto = false;
				timer = 90;
			}
		}
		
		if(dir == "left") {x -= 2;}
		if(dir == "right") {x += 2;}
		
		if(dir != "none") {
			for each(leg in legs) {
				leg.move(dir);
			}
		}
		
		if(dance > 0)
		{
			if(dance > 15) {body.x = 2;}
			else if(dance > 10) {body.x = 0;}
			else if(dance > 5) {body.x = -2;}
			else {body.x = 0;}
			dance--;
		}
		
		graphics.clear();
		for each(leg in legs)
		{
			graphics.lineStyle(6, 0xFF80FF);
			graphics.moveTo(leg.offset/8, 10*leg.invert);
			graphics.lineTo((leg.x-x), (leg.y-y)-70*leg.invert);
			graphics.endFill();
		}
	}
}

class Body extends Sprite
{
	function Body()
	{
		graphics.beginFill(0xC060C0);
		graphics.lineStyle(2, 0xFF80FF);
		graphics.drawRect(-15, -15, 30, 30);
		graphics.endFill();
	}
}

class Leg
{
	public var parent:Kani;
	public var sprite:Sprite;
	
	public var x:Number;
	public var y:Number;
	public var offset:Number;
	public var invert:int;
	public var hitflag:Boolean;
	public var moveflag:Boolean;
	public var gear:int;
	
	function Leg(offset:Number, invert:int)
	{
		this.offset = offset;
		this.invert = invert;
		
		sprite = new Sprite();
		
		sprite.graphics.beginFill(0xC060C0);
		sprite.graphics.lineStyle(0, 0xFF80FF);
		sprite.graphics.lineTo(-5, -40*invert);
		sprite.graphics.lineTo(-5, -60*invert);
		sprite.graphics.lineTo(-2, -70*invert);
		sprite.graphics.lineTo(2, -70*invert);
		sprite.graphics.lineTo(5, -60*invert);
		sprite.graphics.lineTo(5, -40*invert);
		sprite.graphics.lineTo(0, 0);
		sprite.graphics.endFill();
	}
	
	public function move(dir:String):void
	{
		var threshold_l:Number = parent.x+offset + 30;
		var threshold_r:Number = parent.x+offset - 30;
		
		if(moveflag == false) {
			if(threshold_l < x || threshold_r > x)
			{
				moveflag = true;
				gear = -12;
			}
			if(threshold_r > x)
			{
				moveflag = true;
				gear = 12;
			}
		}
		
		if(moveflag == true)
		{
			if(dir == "left" && threshold_l-50 < x)
			{
				x -= 4;
				
				if(gear < 0) {
					y -= 4 * invert;
				}
				else {
					y += 4 * invert;
					if(hitflag == true) {
						moveflag = false;
					}
					if(y < 0 || y > 240) {
						gear = -12;
					}
				}
				gear++;
			}
			else if(dir == "right" && threshold_r+50 > x)
			{
				x += 4;
				
				if(gear > 0) {
					y -= 4 * invert;
				}
				else {
					y += 4 * invert;
					if(hitflag == true) {
						moveflag = false;
					}
					if(y < 0 || y > 240) {
						gear = 12;
					}
				}
				gear--;
			}
		}
	}
}

class StarBG
{
	private var mWidth:int;
	private var mHeight:int;

private var mStars:Array;
	private var mN:int;
	
	private var mCount:int = 0;

function StarBG(w:int, h:int, n:int)
	{
		mWidth = w;
		mHeight = h;
		mN = n;

mStars  = new Array(n);
		for (var i:int = 0;i < n;i++) {
			mStars[i] = {
				x : Math.random()*w, y : Math.random()*h, speed : -Math.random()*1.5-0.5,
				color : ((Math.random()*0xC0+0x40)<<8)+((Math.random()*0xC0+0x40)<<16)+(Math.random()*0xC0+0x40),
				blink : Math.floor(Math.random())*40+20
			};
		}
	}

public function main():void
	{
		var n:int = mN;

for each(var star:Object in mStars)
		{
			star.x += star.speed;
			
			if(star.x < 0)
			{
				star.x += mWidth;
				star.y = Math.random()*mHeight;
				star.speed = -Math.random()*1.5-0.5;
			}
		}
		mCount++;
	}

public function draw(b:BitmapData):void
	{
		for each(var star:Object in mStars)
		{
			if((mCount % star.blink) == 1) {b.setPixel(star.x, star.y, 0xFFFFFF);}
			else {b.setPixel(star.x, star.y, star.color);}
		}
	}
}

class Key
{
	public static var isLeft:Boolean = false;
	public static var isRight:Boolean = false;
	public static var isSpace:Boolean = false;
	
	public static function onKeyDownHandler(e:KeyboardEvent):void
	{
		switch(e.keyCode) {
			case Keyboard.LEFT: Key.isLeft = true; break;
			case Keyboard.RIGHT: Key.isRight = true; break;
			case Keyboard.SPACE: Key.isSpace = true; break;
		}
	}
	public static function onKeyUpHandler(e:KeyboardEvent):void
	{
		switch(e.keyCode) {
			case Keyboard.LEFT: Key.isLeft = false; break;
			case Keyboard.RIGHT: Key.isRight = false; break;
			case Keyboard.SPACE: Key.isSpace = false; break;
		}
	}
}

class MountainGen
{
	private var mPrevBuffer:Array;
	private var mHeight:int;
	private var mCount:int = 100;

private var tmpBuffer:Array;
	private var mGenFunc:Function;
	function MountainGen(h:int, generator:int = 0)
	{
		mHeight = h;
		mGenFunc = generator ? genWav2 : genWav;
		mPrevBuffer = new Array(h);
		tmpBuffer   = new Array(h);
	}

public function draw(b:BitmapData, x:int, y:int, rev:Boolean = true):void
	{
		var i:int;
		for (i = 0;i < mHeight;i++) {
			if (tmpBuffer[i]) {
				var c:int = tmpBuffer[i];
				b.setPixel32(x, rev ? (y+mHeight-i) : (y+i), 0xff000000 | (c/3+11) | ((c/5 + 170)<<16) | ((c/2+60) << 8));
			}
		}
	}

public function step():void
	{
		var t:Number = Number(mCount) * 0.02;
		var h:int = mGenFunc(t) * mHeight;
		var i:int, k:int, m:int;

for (i = 0;i < mHeight;i++) {
			mPrevBuffer[i] = tmpBuffer[i];
		}

for (i = 0;i < mHeight;i++) {
			tmpBuffer[i] = (i < h) ? (Math.random()*80 + 80) : 0;

if (tmpBuffer[i]) {
				if (mPrevBuffer[i])
					tmpBuffer[i] = (tmpBuffer[i] + mPrevBuffer[i]*7)/8;

if (mPrevBuffer[i] == 0 || i == (h-1)) {
					m = 50;
					for (k = i;k >= 0 && m > 0;k--, m-=4) {
						if (m > 33) m--;
						tmpBuffer[k] += m;

m += Math.random()*7;
					}
				}

if (mPrevBuffer[i+1] && i == (h-1)) {
					m = -48;
					for (k = i;k >= 0 && m < 0;k--, m++) {
						tmpBuffer[k] += m;
						if (tmpBuffer[k]<1) tmpBuffer[k] = 1;
					}
				}

}
		}

for (i = 0;i < mHeight;i++)
			tmpBuffer[i] = (tmpBuffer[i] < 0) ? 0 : (tmpBuffer[i] > 255) ? 255 : tmpBuffer[i];

mCount++;
	}

private static function genWav(t:Number, nest:int = 0):Number
	{
		var v:Number = Math.sin(t);
		v += Math.cos(t*3) * 0.1;
		v += Math.cos(0.1 + t*10) * 0.02;
		v *= Math.cos(t*0.1);

if (nest < 5)
			v += genWav(t+1, ++nest);

v = v*0.2 + 0.3;

return (v<0) ? 0 : (v>1) ? 1 : v;
	}

private static function genWav2(t:Number, nest:int = 0):Number
	{
		var v:Number = Math.sin(t);
		v += Math.cos(t*3) * 0.1;
		v += Math.cos(0.1 + t*9) * 0.02;
		v *= Math.cos(0.2 + t*0.15);

if (nest < 5)
			v += genWav2(t+1, ++nest);

v = v*0.2 + 0.2;

return (v<0) ? 0 : (v>1) ? 1 : v;
	}
}

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