// forked from ABA's UpDownRoad // UpDownRoad.as // Display a 3d updown road with 3d particles. package { import flash.display.Sprite; import flash.display.BitmapData; import flash.display.Bitmap; import flash.geom.Rectangle; import flash.events.Event; import flash.events.SampleDataEvent; import flash.media.Sound; [SWF(width="465", height="465", backgroundColor="0x000000", frameRate="30")] public class UpDownRoad extends Sprite { private const SCREEN_WIDTH:int = 465; private const SCREEN_HEIGHT:int = 465; private const DRAWN_PARTICLES_MAX_COUNT:int = 2000; private const PROJECTION_RATIO:Number = 128; private const LOD_DISTANCE:Number = 200; private const MAX_DEPTH:Number = 500; private const ROAD_SPACING:Number = 5; private const ROAD_WIDTH:Number = 64; private const ROAD_HEIGHT:Number = 6; private const SIGHT_HEIGHT:Number = 30; private const BACKGROUND_BOX_SIZE:int = 16; private const BACKGROUND_R:int = 0x88; private const BACKGROUND_G:int = 0xcc; private const BACKGROUND_B:int = 0xff; private var buffer:BitmapData = new BitmapData(SCREEN_WIDTH, SCREEN_HEIGHT, false, 0); private var rect:Rectangle = new Rectangle; private var roads:Vector.<Road> = new Vector.<Road>; private var particles:Vector.<Particle> = new Vector.<Particle>; private var drawnParticles:Vector.<DrawnParticle> = new Vector.<DrawnParticle>; private var dpIndex:int; private var viewpoint:Vector3 = new Vector3; private var yaw:Number, pitch:Number, roll:Number; private var offset:Vector3 = new Vector3; private var carPosIndex:Number; private var roadIndex:int; public function UpDownRoad() { addChild(new Bitmap(buffer)); yaw = pitch = roll = 0; createRoad(); for (var i:int = 0; i < DRAWN_PARTICLES_MAX_COUNT; i++) drawnParticles.push(new DrawnParticle); carPosIndex = roads.length - 10; addEventListener(Event.ENTER_FRAME, onEnterFrame); _initializeSound(); } private function onEnterFrame(evt:Event):void { buffer.fillRect(buffer.rect, 0x99ffdd); carPosIndex += 1.7; if (carPosIndex >= roads.length) carPosIndex -= roads.length; var cpi:int = carPosIndex; var ncpi:int = carPosIndex + 1; if (ncpi >= roads.length) ncpi -= roads.length; var co:Number = carPosIndex - cpi; var rp:Vector3 = roads[cpi].pos; var nrp:Vector3 = roads[ncpi].pos; viewpoint.x += (rp.x * (1 - co) + nrp.x * co - viewpoint.x) * 0.2; viewpoint.y += (rp.y * (1 - co) + nrp.y * co - viewpoint.y - SIGHT_HEIGHT) * 0.2; viewpoint.z += (rp.z * (1 - co) + nrp.z * co - viewpoint.z) * 0.2; var oa:Number = roads[ncpi].angle - roads[cpi].angle; oa = normalizeAngle(oa); oa = roads[cpi].angle + oa * co - yaw; oa = normalizeAngle(oa); yaw += oa * 0.1; yaw = normalizeAngle(yaw); pitch += ((roads[cpi].upDown * (1 - co) + roads[ncpi].upDown * co) * 0.5 - pitch) * 0.2; roll += (-oa * 0.7 - roll) * 0.1; drawBackground(); dpIndex = 0; for each (var p:Particle in particles) drawParticle(p); drawnParticles.sort(sortOnZ); function sortOnZ(v1:DrawnParticle, v2:DrawnParticle):Number { if (v1.pos.z < v2.pos.z) return 1; else if (v1.pos.z > v2.pos.z) return -1; else return 0; } for (var i:int = 0; i < dpIndex; i++) { var dp:DrawnParticle = drawnParticles[i]; rect.x = dp.pos.x - dp.width; rect.y = dp.pos.y - dp.height; rect.width = dp.width * 2; rect.height = dp.height * 2; buffer.fillRect(rect, dp.color); } } private function drawParticle(p:Particle):void { offset.x = p.pos.x - viewpoint.x; offset.y = p.pos.y - viewpoint.y; offset.z = p.pos.z - viewpoint.z; offset.rotationYaw(yaw); offset.rotationPitch(pitch); offset.rotationRoll(roll); if (offset.z < -10 || offset.z > MAX_DEPTH) return; if (p.detail != null && offset.length < LOD_DISTANCE) { for each (var pp:Particle in p.detail) drawParticle(pp); return; } if (offset.z < 1 || p.width <= 0) return; var ar:Number = 1.0 - offset.z / MAX_DEPTH; if (ar < 0) return; var dp:DrawnParticle = drawnParticles[dpIndex]; var zr:Number = 1.0 / offset.z * PROJECTION_RATIO; dp.pos.x = offset.x * zr + SCREEN_WIDTH / 2; dp.pos.y = offset.y * zr + SCREEN_HEIGHT / 2; dp.pos.z = offset.z; dp.width = p.width * zr; dp.height = p.height * zr; dp.color = createColor(p.r, p.g, p.b, 250 * ar); dpIndex++; } private function createColor(r:int, g:int, b:int, a:int):int { return int((r * a + BACKGROUND_R * (256 - a)) / 256) * 0x10000 + int((g * a + BACKGROUND_G * (256 - a)) / 256) * 0x100 + int((b * a + BACKGROUND_B * (256 - a)) / 256); } private function drawBackground():void { offset.x = 0; offset.y = 0; offset.z = 99999; offset.rotationPitch(pitch); var zr:Number = 1.0 / offset.z * PROJECTION_RATIO; var bc:int = SCREEN_WIDTH / BACKGROUND_BOX_SIZE + 1; var bx:Number, by:Number; var vby:Number = BACKGROUND_BOX_SIZE * Math.sin(roll); var bh:Number, bby:Number; for (var j:int = 0; j < 3; j++) { switch (j) { case 0: { bh = 8; bby = 0; break; } case 1: { bh = 16; bby = 16; break; } case 2: { bh = SCREEN_HEIGHT / 3; bby = 48; break; } } bx = SCREEN_WIDTH / 2 - BACKGROUND_BOX_SIZE * bc / 2; by = offset.y * zr + SCREEN_HEIGHT / 2 - vby * bc / 2 + bby + bh; rect.width = BACKGROUND_BOX_SIZE; rect.height = bh * 2; for (var i:int = 0; i < bc; i++) { rect.x = bx - BACKGROUND_BOX_SIZE / 2; rect.y = by - bh; buffer.fillRect(rect, createColor(0x88 - j * 0x33, 0x88 - j * 0x33, 0xff, 255)); bx += BACKGROUND_BOX_SIZE; by += vby; } } } private var roadPattern:Array = [20, 0, 0.2, 1, 16, 0, -3, 0, 16, 0, 3, 0, 80, 0.05, 0.05, 1, 90, 0, 0, 0, 80, -0.05, -1.0, 1, 20, 0, 1.75, 1]; private function createRoad():void { var r:Road = new Road; var a:Number = 0; var ud:Number = roadPattern[2]; r.angle = a; r.upDown = ud; var c:int; var ta:Number, tud:Number; var polePattern:int; var i:int; roadIndex = 0; for (i = 0; i < roadPattern.length; i += 4) { c = roadPattern[i]; ta = roadPattern[i + 1]; tud = roadPattern[i + 2]; polePattern = roadPattern[i + 3]; for (var j:int = 0; j < c; j++) { a += (ta - a) * 0.2; ud += (tud - ud) * 0.1; r.angle += a; r.angle = normalizeAngle(r.angle); r.upDown = ud; addRoadAndPole(r, polePattern); r = getNextRoad(r); } } c = Math.sqrt(r.pos.x * r.pos.x + r.pos.z * r.pos.z) / ROAD_SPACING; var vrp:Vector3 = new Vector3; vrp.x = -r.pos.x / c; vrp.y = -r.pos.y / c; vrp.z = -r.pos.z / c; var va:Number = -r.angle / c; var vud:Number = -r.upDown / c; for (i = 0; i < c; i++) { addRoadAndPole(r, polePattern); var nr:Road = new Road; nr.pos.x = r.pos.x + vrp.x; nr.pos.y = r.pos.y + vrp.y; nr.pos.z = r.pos.z + vrp.z; nr.angle = r.angle + va; nr.upDown = r.upDown + vud; r = nr; } } private function addRoadAndPole(r:Road, polePattern:int):void { addRoadParticles(r); roads.push(r); if (polePattern > 0 && roadIndex % 7 == 0) { addPoleParticles(r); } roadIndex++; } private function getNextRoad(r:Road):Road { var nr:Road = new Road; nr.pos.x = r.pos.x + Math.sin(r.angle) * ROAD_SPACING; nr.pos.z = r.pos.z + Math.cos(r.angle) * ROAD_SPACING; nr.pos.y = r.pos.y + Math.sin(r.upDown) * ROAD_SPACING; nr.angle = r.angle; nr.upDown = r.upDown; return nr; } private function addRoadParticles(r:Road):void { for (var j:int = 0; j < 3; j++) { var p:Particle = new Particle; var ox:Number = Math.cos(r.angle) * ROAD_WIDTH / 3 * 2; var oz:Number = -Math.sin(r.angle) * ROAD_WIDTH / 3 * 2; p.pos.x = r.pos.x + ox * (j - 1); p.pos.y = r.pos.y; p.pos.z = r.pos.z + oz * (j - 1); p.width = ROAD_WIDTH / 3 * 1.05; p.height = ROAD_HEIGHT; p.detail = new Vector.<Particle>; var pc:int = p.width / p.height + 2; ox = Math.cos(r.angle) * p.width / pc * 2; oz = -Math.sin(r.angle) * p.width / pc * 2; var c:int = 0; var i:int; var pp:Particle; for (i = 0; i < pc; i++) { pp = new Particle; pp.pos.x = p.pos.x + ox * (i - pc / 2); pp.pos.y = p.pos.y; pp.pos.z = p.pos.z + oz * (i - pc / 2); pp.width = pp.height = p.height; pp.r = pp.g = pp.b = 190 + Math.random() * 30; c += pp.r; pp.detail = null; p.detail.push(pp); } p.r = p.g = p.b = c / pc; particles.push(p); if (roadIndex % 3 == 0 && j != 1) { pp = new Particle; pp.pos.x = p.pos.x + ox * pc / 2 * 1.2 * (j - 1); pp.pos.y = p.pos.y - p.height * 0.5; pp.pos.z = p.pos.z + oz * pc / 2 * 1.2 * (j - 1); pp.width = p.height; pp.height = p.height * 0.6; pp.r = pp.g = pp.b = 32; pp.detail = null; particles.push(pp); } } } private function addPoleParticles(r:Road):void { for (var i:int = 0; i < 2; i++) { var p:Particle = new Particle; p.width = 4; p.height = 36; p.pos.x = r.pos.x - Math.cos(r.angle) * ROAD_WIDTH * (i * 2 - 1) * 1.1; p.pos.y = r.pos.y - p.height / 2; p.pos.z = r.pos.z + Math.sin(r.angle) * ROAD_WIDTH * (i * 2 - 1) * 1.1; p.r = 250; p.g = 60; p.b = 60; p.detail = new Vector.<Particle>; for (var j:int = 0; j < 8; j++) { var pp:Particle = new Particle; pp.pos.x = p.pos.x; pp.pos.y = p.pos.y - j * p.height / 8; pp.pos.z = p.pos.z; pp.width = p.width; pp.height = p.height / 8; pp.r = p.r; pp.g = p.g; pp.b = p.b; pp.detail = null; p.detail.push(pp); } particles.push(p); } } private function normalizeAngle(v:Number):Number { if (v > Math.PI) return v - Math.PI * 2; else if (v < -Math.PI) return v + Math.PI * 2; else return v; } private var _sound:Sound; private var _module:TinySiOPM; private var _sequencer:Sequencer; private function _initializeSound():void { var mml:String ="" mml+="#BS=r28$s10l4[3e8[22e]er<s2c12>s10brg]s1a36g12f+16s12e8[5e]l2egabl4ers2e20"; mml+="s10[[3e8[22e]er<s2c12>s10brg]e8[15e]gabf+8gae8eeegab"; mml+="[[<c8[6c]>b8[6b]a8[6a]|g8ggggab]|a8aaaabr]a8[6a]<d8[14d]>]"; mml+="erer20[8[erer20|erer20]|er28]erer20"; mml+="[[[<c8[6c]>b8[6b]a8[6a]|g8ggggab]|a8aaaabr]a8[6a]]<d8[14d]>;"; mml+="@0@o1o2BS; v7@0@i3o4BS;"; mml+="#BD=r8l4v14s32cc2<v5e2c2>g2v14crl4c$[rcrr[15ccrr]] [[rcrr[15ccrr]]"; mml+="[rcrr[15ccrr]] [2ccrr]cl2<v6ggggeeeecccc>l4v14c]"; mml+="rcr20[6[crcr20|crcr20]|cr28][8crcrrccr]crcrrcccr"; mml+="[4rcrr[15ccrr]] [2ccrr]cl2<v6ggggeeeecccc>l4v14c;"; mml+="#SN=r8l4v14s12k8cc2k4s32c2c2c6k8s12l8c$k8[14rc]l4ck4ccrk8ccl8c[7rc]r4c4c[5rc]rl2k4ccc8r4k8c8c4c4r8"; mml+="l8[[[15rc]r4c4c] [k8[13rc]|r4c2c2c4k4l4crccrccl8r] rc[rcr4c4c]c4k4l2s32[3c1c1ccc]r4l8k8s12]"; mml+="l16[[2rc]|rc4s24k4c4c8s12k8rc4c12]rc4c12k4s32l2[ccc4]k8s12c4c4c8 l8[6[7rc]r4c4c]r16c4c4c8"; mml+="[4k8[13rc]|r4c2c2c4k4l4crccrccl8r] rc[rcr4c4c]c4k4l2s32[3c1c1ccc]r4l8k8s12;"; mml+="#CY=r8l8s4v8c+20$l8[3s6p3v16d12s10p5v6[14d]d4]s6v16d12p5v6[3d]p2v12d12p5d16p3v16d44p4d20"; mml+="[l4[4p5s6v16d12s24p6v6[29d]]l8p5[4s6v16d16s10v8[14d]][4d]p3s4v12c+32]"; mml+="s64v3l2[512d]v12s6c+8v15c+2r22"; mml+="l8p5[8s6v16d16s10v8[14d]][4d]p3s4v12c+32;"; mml+="@0w32o4BD; @3o0SN; @3o0CY;"; mml+="#GT=r28$l4[3[3[s2e8s12e]ee]ers2b2<c10>brg]s1a36g12f+16s2e40re20"; mml+="[l4[3[3[s2e8s12e]ee]ers2b2<c10>brg][[s2e8s12e]ee]es1g16f+12e20s12eer"; mml+="s1l8[<c24c>b24b<d24d>g24g<c24c>b24b|a56b]a64<d64>]"; mml+="r256s24l4[192e]s12erer20"; mml+="s1l8[[<c24c>b24b<d24d>g24g<c24c>b24b|a56b]a64]<d64>;"; mml+="@2@o1o6 GT; @0@i3@o1o4k112GT; p1v5@1@i4o3 GT;"; mml+="@2@o1o6k112GT; @0@i3@o1o4k224GT; p7v4@1@i4o3k112GT;"; mml+="#S1=v5r28$o6s6l4e8[4e|r36drdrer]r28[3dr]e8[er36drdr|er]s1c36>b12a12r<erer32d20"; mml+="s2[[[e32d32|d24crc20d8r]rd28dr|c12>b<rd]g12f+rd"; mml+="[[er20erdr20dr|dr20drdr12d16]|d24drd24d8]d64d56dr]"; mml+="v7drdrv1drdr[8[v6drdrv1dv6c+12|v6drdrv1drdr]|drrrv1drrr]drdr20"; mml+="[[[er20erdr20dr|dr20drdr12d16]|d24drd24d8]d64]d56dr;"; mml+="#S2=v6r28$o5s6l4g8[4g|r36f+rf+rgr]r28[3f+r]g8[gr36f+rf+r|gr]s1e36e12dr12erer32f+20"; mml+="s2[[[g32f+32|f+24f+re20f+8r]rf+28f+r|e12drf+]b12brf+"; mml+="[[gr20grgr20gr|f+r20f+rgr12fgb8]|g24grf+24f+8]g64f+56f+r]"; mml+="v8grgrv1grgr[8[v6grgrv1gv6g12|v6grgrv1grgr]|grrrv1grrr]grgr20"; mml+="[[[gr20grgr20gr|f+r20f+rgr12fgb8]|g24grf+24f+8]g64]f+56f+r;"; mml+="#S3=v6r28$o5s6l4b8[4b|r36ararbr]r28[3ar]b8[br36arar|br]s1a36g12f+12rbrbr32a20"; mml+="s2>[[[b32a32|a24grg20a8r]ra28ar|g12ara]<<d12d>ra"; mml+="[[cr20cr>br20br|ar20arbr12b16<]|a56a8<]a64a56ar]<"; mml+="v8ererv1erer[8[v6ererv1ev6e12|v6ererv1erer]|errrv1errr]erer20"; mml+="[[[cr20cr>br20br|ar20arbr12b16<]|a56a8<]a64]a56ar<;"; mml+="p6@1S1; p2@1S2; @1S3;"; mml+="#MA=r28$@1s3[l16f+1g19f+d>a12b48l4|f+gargre8r112<]r8<cde36g8el8aea+2b2l4rer32d20"; mml+="@10[s6l4[>[b8bbbbab<c+2d2r>a24|a8aaaagab8<c>ba8eg]r|<f+16g8f+e24r8]<g16f+12e20>"; mml+="s3b<d>b<e20re8d16>brgra24gab16 fgb<de24f+gd16cr>b8a52<ef+r"; mml+="g28f+g8d16grf+12gargrarb16<c+1d3rdr>g16<d+1e7dr>g12<cr>ba64f+64];"; mml+="#MB=r20@2s1w12o9c64s4w-32o4[4c8]r16s2w6o8c64s4w24o5[5c6]r2s1w-12o4c64s0w-2o5c224"; mml+="@10s3w0o6l4[8rf+de>gb<d>f+abegaf+de<];"; mml+="#MB2=r772l4<[4raf+g>b<df+>a<de>ab<d>af+g<]>;"; mml+="#MC=r16>[s3b<d>b<e20re8d16>brgra24gab16 fgb<de24f+gd16cr>b8a52<ef+r"; mml+="g28f+g8d16grf+12gargrarb16<c+1d3rdr>g16<d+1e7dr>g12<cr>b|a52>]a64<d64>;"; mml+="v8o6k-1MAv6MBv8MC; v10o5k1MAv3MB2v10MC; v3p1o6r4MAv4MBv3MC;"; _module = new TinySiOPM(2048, 1024, _onSoundFrame); _sequencer = new Sequencer(2, _expandMML(mml)); _sound = new Sound(); _sound.addEventListener("sampleData", _onStream); _sound.play(); } private function _onSoundFrame() : void { _sequencer.onSoundFrame(); } private function _onStream(e:SampleDataEvent) : void { var moduleOut:Vector.<Number> = _module.render(); for (var i:int = 0; i<4096; i++) { e.data.writeFloat(moduleOut[i]); } } private function _expandMML(mml:String) : Array { var split:Array = mml.replace(/\s+/g, "").split(/;/); var list:Array = [], macro:* = {}; var defMacro:RegExp = /^#([_A-Z][_A-Z0-9]*)=?(.*)/m; for each (var seq:String in split) { var res:* = defMacro.exec(seq); if (res) macro[res[1]] = res[2]; else list.push(seq.replace(/[_A-Z][_A-Z0-9]*/g, function() : String { if (!arguments[0] in macro) return ""; return macro[arguments[0]]; })); } return list; } } } class Road { public var pos:Vector3 = new Vector3; public var angle:Number, upDown:Number; } class Particle { public var pos:Vector3 = new Vector3; public var width:Number; public var height:Number; public var r:int, g:int, b:int; public var detail:Vector.<Particle>; } class DrawnParticle { public var pos:Vector3 = new Vector3; public var width:Number; public var height:Number; public var color:int; } class Vector3 { public var x:Number = 0; public var y:Number = 0; public var z:Number = 0; public function rotationYaw(v:Number):void { var sv:Number = Math.sin(v); var cv:Number = Math.cos(v); var rx:Number = cv * x - sv * z; z = sv * x + cv * z; x = rx; } public function rotationPitch(v:Number):void { var sv:Number = Math.sin(v); var cv:Number = Math.cos(v); var ry:Number = cv * y - sv * z; z = sv * y + cv * z; y = ry; } public function rotationRoll(v:Number):void { var sv:Number = Math.sin(v); var cv:Number = Math.cos(v); var rx:Number = cv * x - sv * y; y = sv * x + cv * y; x = rx; } public function get length():Number { return Math.sqrt(x * x + y * y + z * z); } } // MML Sequencer // http://wonderfl.kayac.com/user/keim_at_Si //-------------------------------------------------- class Sequencer { private var _tracks:Array, _count:int=Track.speed+1; function Sequencer(speed:int, mmls:Array=null) { Track.speed=speed; mml=mmls; } public function onSoundFrame() : Boolean { if (++_count == Track.speed) { for each (var tr:Track in _tracks) tr.execute(); _count = 0; return true; } return false; } public function set mml(list:Array) : void { _tracks = []; if (list) { for each (var seq:String in list) _tracks.push(new Track(seq)); } _count = 0; } } class Track { static public var codeA:int="a".charCodeAt(), nt:Array=[9,11,0,2,4,5,7], speed:int=3; public var oct:int, len:int, tl:int, dt:int, cnt:int, seq:String, sgn:int, stac:Array, osc:Osc; private var _rex:RegExp=/(@i|@o|[a-gkloprsvw<>[|\]$@])([#+])?(-?\d+)?/g; function Track(seq:String) { osc = Osc.alloc().reset().activate(false); reset(seq); } public function reset(seq_:String) : void { seq=seq_; oct=5; len=4; tl=256; dt=0; cnt=0; sgn=0; _rex.lastIndex=0; stac=[]; } public function execute() : void { if (--cnt <= 0) { for (var i:int=0; i<100; i++) { var res:* = _rex.exec(seq); if (!res) { if (sgn) { _rex.lastIndex = sgn; continue; } else { cnt = int.MAX_VALUE; break; } } var cmd:int = res[1].charCodeAt(); if (cmd>=codeA && cmd<=codeA+6) { cnt = (res[3]) ? int(res[3]) : len; osc.len = cnt * speed; osc.pt = ((nt[cmd-codeA]+oct*12+((res[2])?1:0))<<4) + dt; osc.tl = tl; break; } else if (res[1] == 'r') { cnt = (res[3]) ? int(res[3]) : len; break; } else { switch(res[1]){ case 'k': dt = int(res[3]); break; case 'l': len = int(res[3]); break; case 'o': oct = int(res[3]); break; case 'v': tl = TinySiOPM.log(int(res[3])*0.0625); break; case '<': oct++; break; case '>': oct--; break; case '@': osc.ws = int(res[3]); break; case 's': osc.dr = int(res[3])<<2; break; case 'w': osc.sw = -int(res[3]); break; case 'p': osc.pan = (int(res[3])<<4)-64; break; case '@i': osc.mod = int(res[3]); break; case '@o': osc.out = int(res[3]); break; case '$': sgn = _rex.lastIndex; break; case '[': stac.unshift({p:_rex.lastIndex,c:((res[3])?int(res[3]):2),j:0}); break; case '|': if (stac[0].c == 1) { _rex.lastIndex = stac[0].j; stac.shift(); } break; case ']': stac[0].j = _rex.lastIndex; if (--stac[0].c == 0) stac.shift(); else _rex.lastIndex = stac[0].p; break; } } } } } } class TinySiOPM { private var _output:Vector.<Number>, _zero:Vector.<int>, _pipe:Vector.<int>; private var _pitchTable:Vector.<int> = new Vector.<int>(2048, true); private var _logTable:Vector.<int> = new Vector.<int>(6144, true); private var _panTable:Vector.<Number> = new Vector.<Number>(129, true); private var _bufferSize:int, _callbackFrams:int, _onSoundFrame:Function; // Pass the buffer size and the function calls in each frame. function TinySiOPM(bufferSize:int=2048, callbackFrams:int=1024, onSoundFrame:Function=null) { var i:int, j:int, p:Number, v:Number, t:Vector.<int>, ft:Array=[0,1,2,3,4,5,6,7,7,6,5,4,3,2,1,0]; for (i=0, p=0; i<192; i++, p+=0.00520833333) // create pitchTable[128*16] for(v=Math.pow(2, p)*12441.464342886, j=i; j<2048; v*=2, j+=192) _pitchTable[j] = int(v); for (i=0; i<32; i++) _pitchTable[i] = (i+1)<<6; // [0:31] for white noize for (i=0, p=0.0078125; i<256; i+=2, p+=0.0078125) // create logTable[12*256*2] for(v=Math.pow(2, 13-p), j=i; j<3328; v*=0.5, j+=256) _logTable[j+1] = -(_logTable[j]=int(v)); for (i=3328; i<6144; i++) _logTable[i] = 0; // [3328:6144] is 0-fill area for (i=0, p=0; i<129; i++, p+=0.01217671571) _panTable[i]=Math.sin(p)*0.5; // pan table; for (t=Osc.createTable(10), i=0, p=0; i<1024; i++, p+=0.00613592315) t[i] = log(Math.sin(p)); // sin=0 for (t=Osc.createTable(10), i=0, p=0.75; i<1024; i++, p-=0.00146484375) t[i] = log(p); // saw=1 for (t=Osc.createTable(5), i=0; i<16; i++) t[i+16] = (t[i] = log(ft[i]*0.0625)) + 1; // famtri=2 for (t=Osc.createTable(15), i=0; i<32768; i++) t[i] = log(Math.random()-0.5); // wnoize=3 for (i=0; i<8; i++) for (t=Osc.createTable(4), j=0; j<16; j++) t[j] = (j<=i) ? 192 : 193; // pulse=4-11 _zero = new Vector.<int>(bufferSize, true); // allocate zero buffer _pipe = new Vector.<int>(bufferSize, true); // allocate fm pipe buffer _output = new Vector.<Number>(bufferSize*2, true); // allocate stereo out _bufferSize = bufferSize; _callbackFrams = callbackFrams; _onSoundFrame = onSoundFrame; // set parameters for (i=0; i<bufferSize; i++) { _pipe[i]=_zero[i]=0; } // clear buffers } // calculate index of logTable static public function log(n:Number) : int { return (n<0) ? ((n<-0.00390625) ? (((int(Math.log(-n) * -184.66496523 + 0.5) + 1) << 1) + 1) : 2047) : ((n> 0.00390625) ? (( int(Math.log( n) * -184.66496523 + 0.5) + 1) << 1) : 2046); } // reset all oscillators public function reset() : void { for (var o:Osc=Osc._tm.n; o!=Osc._tm; o=o.inactivate().n) { o.fl = Osc._fl; } } // Returns stereo output as Vector.<Number>(bufferSize*2). public function render() : Vector.<Number> { var i:int, j:int, ph:int, dph:int, mod:int, sh:int, tl:int, lout:int, v:int, imax:int, osc:Osc, tm:Osc, l:Number, r:Number, wv:Vector.<int>, fm:Vector.<int>, base:Vector.<int>, out:Vector.<int>=_pipe, lt:Vector.<int>=_logTable, stereoOut:Vector.<Number> = _output; imax = _bufferSize<<1; for (i=0; i<imax; i++) stereoOut[i] = 0; for (imax=_callbackFrams; imax<=_bufferSize; imax+=_callbackFrams) { if (_onSoundFrame!=null) _onSoundFrame(); tm = Osc._tm; for (osc=tm.n; osc!=tm; osc=osc.update()) { dph=_pitchTable[osc.pt]; ph=osc.ph; mod=osc.mod+10; sh=osc.sh; tl=osc.tl; wv=osc.wv; fm=(osc.mod==0)?_zero:_pipe; base=(osc.out!=2)?_zero:_pipe; for (i = imax-_callbackFrams; i < imax; i++) { v = ((ph + (fm[i] << mod))& 0x3ffffff) >> sh; lout = wv[v] + tl; out[i] = lt[lout] + base[i]; ph = (ph + dph) & 0x3ffffff; } osc.ph = ph; if (osc.out==0) { l = _panTable[64-osc.pan] * 0.0001220703125; r = _panTable[64+osc.pan] * 0.0001220703125; for (i=imax-_callbackFrams, j=i*2; i<imax; i++) { stereoOut[j] += out[i]*l; j++; stereoOut[j] += out[i]*r; j++; } } } } return stereoOut; } // note on public function noteOn(pitch:int, length:int=0, vol:Number=0.5, wave:int=0, decay:int=6, sweep:int=0, pan:int=0) : Osc { var osc:Osc = Osc.alloc().reset(); osc.pt = pitch; osc.len = length; osc.tl = log(vol); osc.ws = wave; osc.dr = decay<<2; osc.sw = sweep; osc.pan = pan; return osc.activate(true); } } class Osc { // create new wave table and you can refer the table by '@' command. static public function createTable(b:int) : Vector.<int> { _w.push(new Vector.<int>(1<<b,true)); _s.push(26-b); return _w[_w.length-1]; } static public var _w:Array=[], _s:Array=[], _fl:Osc=new Osc(), _tm:Osc=new Osc(); static public function alloc():Osc{ if(_fl.p==_fl)return new Osc();var r:Osc=_fl.p;_fl.p=r.p;r.p.n=_fl;return r; } public function into(x:Osc):Osc{ p=x.p;n=x;p.n=this;n.p=this;return this; } public var p:Osc, n:Osc, fl:Osc, pt:int, len:int, ph:int; public var tl:int, sw:int, dr:int, wv:Vector.<int>, sh:int, mod:int, out:int, pan:int; public function set ws(t:int) : void { wv=_w[t]; sh=_s[t]; } public function Osc() { p = n = this; } public function update() : Osc { tl+=dr; pt+=sw; pt&=2047; return (--len==0||tl>3328) ? (inactivate().n) : n; } public function reset() : Osc { ph=0; pt=0; len=0; tl=3328; sw=0; dr=24; pan=0; ws=0; mod=0; out=0; return this; } public function activate(autoFree:Boolean=false) : Osc { into(_tm); fl=(autoFree)?_fl:null; return this; } public function inactivate() : Osc { tl=3328; if(!fl)return this; var r:Osc=p; p.n=n; n.p=p; into(fl); return r; } public function isActive() : Boolean { return (tl<3328); } }