// 格ゲーコマンド入力判定 // Fighting game command detection // http://geoquake.jp/blog/2009/05/20/fightinggame/ // // Stick = arrow keys or numpad // Punch button = Space, Ctrl, Z // Kick button = Shift, N, M, X // package { import flash.display.*; import flash.events.*; import flash.geom.*; import flash.text.*; [SWF(width = "465", height = "465", frameRate = "50")] public class Main extends Sprite { private const SCREEN_W:int = 465; private const SCREEN_H:int = 465; private var input:FightingGameInput = new FightingGameInput(stage); private var technique:TextField = new TextField(); private var techniqueTicks:int = 0; private var controlPanel:ControlPanel; public function Main() { // インストラクションを描画 // 0-7 = 矢印(右から時計回り) // P = 「P」 // K = 「K」 // + = 「+」 // T = 「溜め」 // R = 「連打」 // H = 「離す」 // N = 「ニュートラル」 print("210+P"); print("021+P"); print("234+K"); print("44"); gotoRight(); print("4T0+P"); print("PKT H"); print("PR"); addChild(new Bitmap(instruction)); controlPanel = new ControlPanel(); controlPanel.x = SCREEN_W / 2; controlPanel.y = 400; addChild(controlPanel); technique.defaultTextFormat = new TextFormat("_ゴシック", 50, 0x00000000, true); technique.autoSize = TextFieldAutoSize.CENTER; technique.selectable = false; technique.x = 30; technique.y = 210; technique.width = SCREEN_W - 30 * 2; addChild(technique); addEventListener(Event.ENTER_FRAME, enterFrameHandler); } private function enterFrameHandler(event:Event):void { input.update(); controlPanel.setState(input.getStick(), input.isDown(FightingGameInput.BUTTON_K), input.isDown(FightingGameInput.BUTTON_P)); function showTechnique(name:String):void { technique.text = name; techniqueTicks = 40; } // 必殺技チェック！ // checkCommand(判定フレーム数, コマンドスクリプト) if (input.checkCommand(20, "2 1 0P")) { // 0-7(右から時計回り)でレバーの状態。0P＝右にレバーが入った状態でパンチボタンが押し下げられた showTechnique("著作権ッ！"); input.clearBuffer(); } else if (input.checkCommand(20, "0 2 1P")) { showTechnique("肖像権ッ！"); input.clearBuffer(); } else if (input.checkCommand(20, "2 3 4K")) { showTechnique("則巻千兵衛脚ッ！"); // なんかもうほんとごめんなさい input.clearBuffer(); } else if (input.checkCommand(10, "N 4 N 4")) { // N＝ニュートラル showTechnique("バックステップ"); input.clearBuffer(); } else if (input.checkCommand(25, "4x20 0P")) { // 4x20＝レバー左が20フレーム showTechnique("溜めコマンド"); input.clearBuffer(); } else if (input.checkCommand(25, "PdKdx20 PuKu")) { // Pd＝パンチボタンが下がっている状態、Pu＝同じく上がっている状態 showTechnique("溜めコマンド２"); input.clearBuffer(); } else if (input.checkCommand(30, "P P P P P")) { showTechnique("打つべし！打つべし！"); //input.clearBuffer(); } else if (input.checkCommand(255, "N 6 N 6 N 2 N 2 N 4 N 0 N 4 N 0 N K P")) { showTechnique("コナミコマンド"); input.clearBuffer(); } else if (input.isPressed(FightingGameInput.BUTTON_P)) { showTechnique("パンチ"); } else if (input.isPressed(FightingGameInput.BUTTON_K)) { showTechnique("キック"); } if (techniqueTicks > 0) { techniqueTicks--; technique.visible = true; } else { technique.visible = false; } } // インストラクションの描画 private var instruction:BitmapData = new BitmapData(SCREEN_W, SCREEN_H, false, 0xFF9020); private var line:int = 33; private var instX:int = 33; private function print(s:String):void { var x:int = instX; var arrow:Shape = new Shape(); var g:Graphics = arrow.graphics; g.clear(); g.beginFill(0x000000); g.drawPath(Vector.<int>([1, 2, 2, 2, 2, 2, 2, 2]), Vector.<Number>([ -15, -5, 0, -5, 0, -15, 15, 0, 0, 15, 0, 5, -15, 5, -15, -5 ]) ); g.endFill(); var matrix:Matrix = new Matrix(); var textField:TextField = new TextField(); textField.defaultTextFormat = new TextFormat("_sans", 34, 0x00000000, true); textField.autoSize = TextFieldAutoSize.LEFT; // ボーダーを表示するとレイアウトが確認しやすい。 //textField.border = true; for (var i:int = 0; i < s.length; i++) { switch (s.charAt(i)) { case "P": case "K": case "+": case " ": textField.text = s.charAt(i); break; case "T": textField.text = "溜め"; break; case "R": textField.text = "連打"; break; case "H": textField.text = "離す"; break; case "N": textField.text = "ニュートラル"; break; default: // 矢印 matrix.identity(); matrix.rotate(Number(s.charAt(i)) * Math.PI / 4); matrix.translate(x + 15, line + 15); instruction.draw(arrow, matrix); x += 35; continue; } matrix.identity(); matrix.translate(x, line - 6); instruction.draw(textField, matrix); x += textField.width; } line += 40; } private function gotoRight():void { instX = SCREEN_W / 2; line = 33; } } } import flash.display.*; import flash.events.*; import flash.geom.*; import flash.ui.*; class ControlPanel extends Sprite { private var stickBall:Shape = new Shape(); private var stickPole:Shape = new Shape(); private var buttons:Vector.<Shape> = new Vector.<Shape>(); private const STICK_X:int = -70; private const STICK_Y:int = -80; private const BUTTON_Y:Array = [ -43, -53 ]; function ControlPanel() { var g:Graphics = graphics; g.beginFill(0x1E2C2F); g.drawRect(-200, -85, 400, 90); g.endFill(); g.beginFill(0x000000); g.drawEllipse(-90, -60, 40, 30); g.endFill(); g.beginFill(0x01792B); g.drawEllipse(0, -55, 40, 30); g.drawEllipse(45, -65, 40, 30); g.endFill(); g = stickBall.graphics; var matrix:Matrix = new Matrix(); matrix.createGradientBox(40, 40, 0, -23, -25); g.beginGradientFill(GradientType.RADIAL, [0xFFFFFF, 0x00BD51, 0x01692B], null, [10, 30, 230], matrix); g.drawCircle(0, 0, 20); g.endFill(); for (var i:int = 0; i < 2; i++) { var button:Shape = new Shape(); g = button.graphics; matrix.createGradientBox(34, 24, 0, -17, -13); g.beginGradientFill(GradientType.RADIAL, [0x01A03C, 0x01A032, 0x20B040], null, [0, 245, 250], matrix); g.drawEllipse( -17, -12, 34, 24); g.endFill(); g.beginFill(0xFFFFFF); g.endFill(); buttons.push(button); } addChild(stickPole); stickBall.x = STICK_X; stickBall.y = STICK_Y; addChild(stickBall); buttons[0].x = 20; buttons[0].y = BUTTON_Y[0]; addChild(buttons[0]); buttons[1].x = 65; buttons[1].y = BUTTON_Y[1]; addChild(buttons[1]); } public function setState(stick:int, button0:Boolean, button1:Boolean):void { var sx:Number = STICK_X; var sy:Number = STICK_Y; if (stick != GameInput.STICK_NEUTRAL) { var angle:Number = stick * Math.PI / 4; sx = STICK_X + Math.cos(angle) * 10; sy = STICK_Y + Math.sin(angle) * 10 + 1; } stickBall.x = sx; stickBall.y = sy; var g:Graphics = stickPole.graphics; g.clear(); g.lineStyle(8, 0x556666); g.moveTo(-70, -45); g.lineTo(sx, sy); buttons[0].y = button0 ? BUTTON_Y[0] + 3 : BUTTON_Y[0]; buttons[1].y = button1 ? BUTTON_Y[1] + 3 : BUTTON_Y[1]; } } // ゲーム用入力クラス（つくりかけ） // // キーボードの状態を毎フレームのupdate()で仮想ボタンの状態に整理し、 // 仮想ボタンの上下左右をgetStick()でスティック方向に整理という流れです。 // スティック方向は0＝右から時計回りで、8(STICK_NEUTRAL)でニュートラルになっています。 // これはベクトルに変換する際便利なためです（テンキー配列も直感的なので迷う……）。 // // isDown()、isPressed()、isReleased()で、ボタンの押下状態、押した瞬間、離した瞬間を検出します。 // getButtonTicks()でボタンが押されているフレーム数を取得します。 // // 仮想ボタン class Button { public static const UP:int = 0; public static const DOWN:int = 1; public static const LEFT:int = 2; public static const RIGHT:int = 3; public static const A:int = 4; public static const B:int = 5; public static const MAX:int = 6; } class GameInput { public static const STICK_NEUTRAL:int = 8; private var stage:Stage; private const KEY_CODE_MAX:int = 256; private var keyState:Vector.<Boolean> = new Vector.<Boolean>(KEY_CODE_MAX, true); private var buttonState:Vector.<Boolean> = new Vector.<Boolean>(Button.MAX, true); private var buttonTicks:Vector.<int> = new Vector.<int>(Button.MAX, true); function GameInput(stage:Stage) { this.stage = stage; clearKeyState(); for (var i:int = 0; i < Button.MAX; i++) { buttonState[i] = false; buttonTicks[i] = 0; } stage.addEventListener(KeyboardEvent.KEY_DOWN, keyDownHandler); stage.addEventListener(KeyboardEvent.KEY_UP, keyUpHandler); stage.addEventListener(Event.DEACTIVATE, deactivateHandler); } private function clearKeyState():void { for (var i:int = 0; i < KEY_CODE_MAX; i++) { keyState[i] = false; } } private function keyDownHandler(event:KeyboardEvent):void { keyState[event.keyCode] = true; } private function keyUpHandler(event:KeyboardEvent):void { keyState[event.keyCode] = false; } private function deactivateHandler(event:Event):void { clearKeyState(); } private const TO_STICK:Array = [ -1, 3, 2, 1, 4, STICK_NEUTRAL, 0, 5, 6, 7 ]; public function getStick():int { // 一旦テンキー配列にする。 var d:int = 5; if (isDown(Button.UP)) { d += 3; } else if (isDown(Button.DOWN)) { d -= 3; } if (isDown(Button.RIGHT)) { d += 1; } else if (isDown(Button.LEFT)) { d -= 1; } // テンキー配列を時計回り配列に変換 return TO_STICK[d]; } public function getButtonTicks(button:int):int { return buttonTicks[button]; } public function isDown(button:int):Boolean { return (getButtonTicks(button) > 0); } public function isPressed(button:int):Boolean { return (getButtonTicks(button) == 1); } public function isReleased(button:int):Boolean { return (getButtonTicks(button) < 0); } public function update():void { buttonState[Button.UP] = keyState[Keyboard.UP] || keyState[Keyboard.NUMPAD_8]; buttonState[Button.DOWN] = keyState[Keyboard.DOWN] || keyState[Keyboard.NUMPAD_2]; buttonState[Button.LEFT] = keyState[Keyboard.LEFT] || keyState[Keyboard.NUMPAD_4]; buttonState[Button.RIGHT] = keyState[Keyboard.RIGHT] || keyState[Keyboard.NUMPAD_6]; buttonState[Button.A] = keyState[Keyboard.SPACE] || keyState[Keyboard.CONTROL] || keyState[90]; buttonState[Button.B] = keyState[Keyboard.SHIFT] || keyState[78] || keyState[77] || keyState[88]; for (var i:int = 0; i < Button.MAX; i++) { if (buttonState[i]) { buttonTicks[i]++; } else { if (buttonTicks[i] > 0) { buttonTicks[i] = -buttonTicks[i]; } else if (buttonTicks[i] < 0) { buttonTicks[i] = 0; } } } } } // GameInputクラスに格ゲーコマンド判定を付加 class FightingGameInput extends GameInput { // ボタン別名 public static const BUTTON_P:int = Button.A; public static const BUTTON_K:int = Button.B; // 入力状態を溜め込むリングバッファ private const BUFFER_SIZE:int = 256; // 2の乗数 private var buffer:Vector.<uint> = new Vector.<uint>(BUFFER_SIZE, true); private var cursor:int = 0; // bufferの要素の構造 // |76543210|76543210|76543210|76543210| // | | |KKKKPPPP|<stick >| // / | // +--------+-------+--+----+ // |released|pressed|up|down| // +--------+-------+--+----+ function FightingGameInput(stage:Stage) { super(stage); clearBuffer(); } public function clearBuffer():void { for (var i:int = 0; i < BUFFER_SIZE; i++) { buffer[i] = STICK_NEUTRAL; } } public override function update():void { super.update(); buffer[cursor] = getStick() | (int(isDown(BUTTON_P)) << 8) | (int(!isDown(BUTTON_P)) << 9) | (int(isPressed(BUTTON_P)) << 10) | (int(isReleased(BUTTON_P)) << 11) | (int(isDown(BUTTON_K)) << 12) | (int(!isDown(BUTTON_K)) << 13) | (int(isPressed(BUTTON_K)) << 14) | (int(isReleased(BUTTON_K)) << 15); if (++cursor >= BUFFER_SIZE) { cursor = 0; } } public function checkCommand(ticks:int, command:String):Boolean { if (ticks >= BUFFER_SIZE) { throw Error("too long ticks"); } // メモ // p cursor // v v // 88833333333882288 var p:int = cursor - ticks; function search(state:uint, mask:uint, length:int):Boolean { var matchLength:int = 0; for (; (p & (BUFFER_SIZE - 1)) != cursor; p++) { if ((buffer[p & (BUFFER_SIZE - 1)] & mask) == state) { matchLength++; if (matchLength >= length) { p++; return true; } } else { matchLength = 0; } } // バッファ末端までマッチしなかった。 return false; } var rex:RegExp = /([0-8NPKudpr]+)(x\d+)?/g; for (var result:Object = rex.exec(command); result; result = rex.exec(command)) { var length:int = result[2] ? result[2].substring(1) : 1; var state:uint = 0x0000; var mask:uint = 0x0000; var r:RegExp = /([0-8N]|[PK])([udpr])?/g; for (var button:Object = r.exec(result[1]); button; button = r.exec(result[1])) { var shift:int = 2; switch (button[2]) { case "d": // down shift = 0; break; case "u": // up shift = 1; break; case "p": // pressed shift = 2; break; case "r": // released shift = 3; break; } if (button[1] == "N") { button[1] = "8"; } switch (button[1]) { case "P": shift += 8; mask |= 1 << shift; state |= 1 << shift; break; case "K": shift += 12; mask |= 1 << shift; state |= 1 << shift; break; default: mask |= 0xFF; state |= button[1]; break; } } if (!search(state, mask, length)) { return false; } } return true; } } 格ゲーコマンド入力判定
