|
| 1 | +pre = document.querySelector('pre') |
| 2 | +frame = null |
| 3 | +sounds = { |
| 4 | + jump: new Audio('sounds/jump.m4a') |
| 5 | +} |
| 6 | + |
| 7 | +getRandomInt = (min, max) -> |
| 8 | + return Math.floor(Math.random() * (max - min + 1) + min) |
| 9 | + |
| 10 | +class Sprite |
| 11 | + constructor: (@config) -> |
| 12 | + @frames = @config.frames |
| 13 | + @states = @config.states |
| 14 | + @changeState(Object.keys(@states)[0]) |
| 15 | + |
| 16 | + changeState: (state) -> |
| 17 | + @currentState = state |
| 18 | + @frameIndex = -1 |
| 19 | + |
| 20 | + tick: -> |
| 21 | + @frameIndex++ |
| 22 | + if @frameIndex >= @states[@currentState].length |
| 23 | + @frameIndex = 0 |
| 24 | + frameName = @states[@currentState][@frameIndex] |
| 25 | + @currentFrame = @frames[frameName] |
| 26 | + |
| 27 | +class Items |
| 28 | + constructor: (@initial, @step_min, @step_max) -> |
| 29 | + @items = [@initial] |
| 30 | + @deleted = [] |
| 31 | + |
| 32 | + get: (x1, x2) -> |
| 33 | + # populate till the end of the range |
| 34 | + while @items[@items.length-1] < x2 |
| 35 | + @items.push @items[@items.length-1] + getRandomInt(@step_min, @step_max) |
| 36 | + # remove old entries |
| 37 | + if @items.size > 1000 |
| 38 | + @items = @items.slice(@items.length-1000) |
| 39 | + # return items in requested range (without deleted items) |
| 40 | + items = [] |
| 41 | + for x in @items |
| 42 | + if x >= x1 && x <= x2 && @deleted.indexOf(x) < 0 |
| 43 | + items.push x |
| 44 | + items |
| 45 | + |
| 46 | + delete: (items) -> |
| 47 | + @deleted.push items... |
| 48 | + |
| 49 | +playerSprite = new Sprite |
| 50 | + frames: |
| 51 | + run1: |
| 52 | + ''' |
| 53 | + o |
| 54 | + <|- |
| 55 | + / > |
| 56 | + ''' |
| 57 | + run2: |
| 58 | + ''' |
| 59 | + o |
| 60 | + /|~ |
| 61 | + --\\ |
| 62 | + ''' |
| 63 | + jump: |
| 64 | + ''' |
| 65 | + o/ |
| 66 | + /| |
| 67 | + --- |
| 68 | + ''' |
| 69 | + states: |
| 70 | + running: [ |
| 71 | + 'run1', |
| 72 | + 'run1', |
| 73 | + 'run2', |
| 74 | + 'run2', |
| 75 | + ] |
| 76 | + jumping: [ |
| 77 | + 'jump', |
| 78 | + ] |
| 79 | + |
| 80 | +class Player |
| 81 | + constructor: (@sprite) -> |
| 82 | + @jumpPos = null |
| 83 | + @posX = 0 |
| 84 | + @posY = 2 |
| 85 | + |
| 86 | + tick: -> |
| 87 | + @posX++ |
| 88 | + if @jumpPos? |
| 89 | + if @jumpPos < 4 |
| 90 | + @jumpPos++ |
| 91 | + else |
| 92 | + @jumpPos = null |
| 93 | + @posY = 2 |
| 94 | + @sprite.changeState 'running' |
| 95 | + |
| 96 | + jump: -> |
| 97 | + return if @jumpPos? |
| 98 | + @jumpPos = 0 |
| 99 | + @posY = 1 |
| 100 | + @sprite.changeState 'jumping' |
| 101 | + sounds.jump.play() |
| 102 | + |
| 103 | +player = new Player(playerSprite) |
| 104 | + |
| 105 | +document.addEventListener 'keypress', (event) -> |
| 106 | + if event.keyCode == 32 |
| 107 | + player.jump() |
| 108 | + |
| 109 | +document.addEventListener 'touchstart', -> |
| 110 | + player.jump() |
| 111 | + |
| 112 | +drawSprite = (spriteFrame, x, y) -> |
| 113 | + spriteFrameLines = spriteFrame.split('\n') |
| 114 | + for i in [0..spriteFrameLines.length-1] |
| 115 | + frame[i+y] = frame[i+y].slice(0, x) + spriteFrameLines[i] + frame[i+y].slice(x+spriteFrameLines[i].length) |
| 116 | + |
| 117 | +clearFrame = -> |
| 118 | + frame = [ |
| 119 | + new Array(81).join('-'), |
| 120 | + new Array(81).join(' '), |
| 121 | + new Array(81).join(' '), |
| 122 | + new Array(81).join(' '), |
| 123 | + new Array(81).join(' '), |
| 124 | + new Array(81).join('-') |
| 125 | + ] |
| 126 | + |
| 127 | +hurdles = new Items(50, 10, 20) |
| 128 | + |
| 129 | +viewportX = -3 |
| 130 | + |
| 131 | +tick = -> |
| 132 | + clearFrame() |
| 133 | + |
| 134 | + player.tick() |
| 135 | + playerSprite.tick() |
| 136 | + |
| 137 | + for hurdle_x in hurdles.get(0+player.posX+viewportX, 80+player.posX+viewportX) |
| 138 | + drawSprite('#', hurdle_x-player.posX-viewportX, 4) |
| 139 | + |
| 140 | + drawSprite(playerSprite.currentFrame, -viewportX, player.posY) |
| 141 | + |
| 142 | + pre.innerText = frame.join('\n') |
| 143 | + |
| 144 | + setTimeout(tick, 100) |
| 145 | + |
| 146 | +tick() |
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