/
view-skin.html
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/
view-skin.html
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<!DOCTYPE html>
<html>
<head>
<style type="text/css">
* {
margin: 0px; padding: 0px;
}
body { padding: 2em; }
#container {
position: relative; border: 1px solid black; width: 176px; height: 112px;
margin: auto;
}
#board {
position: absolute; left: 0px; top: 0px; right: 0px; bottom: 0px;
width: 176px; height: 112px;
background: #999 url(img/client/tile.png) repeat;
}
input[type=button] {
margin: 1ex; padding: 0.5ex;
}
#skin-list span {
display: inline-block; width: 48px; height: 16px; background: url(img/16/skins.png);
cursor: pointer; margin: 16px;
}
.float { float: left; margin: 1em; }
</style>
</head>
<body>
<div class="float">
<div id="container">
<canvas id="board" width="176" height="112"></canvas>
</div>
<div style="text-align:center;margin-top:1ex">
<input type="button" value="Пуск" onclick="Snake.Timer.Start()">
<input type="button" value="Шаг" onclick="Snake.Timer.Stop(); Snake.Move()">
<input type="button" value="Стоп" onclick="Snake.Timer.Stop()">
</div>
</div>
<div class="float">
Окраска змеи: <span id="file-name">img/16/skin1.png</span><br><br>
<img id="skin" style="max-width:80px;max-height:64px;" alt="" src="img/16/skin1.png">
<input type="button" value="URL" onclick="SetSkinUrl()">
<input type="button" value="Загрузить" onclick="Upload()">
<iframe style="width:1px;height:1px" src="f2b64.php" frameborder="0"></iframe>
</div>
<div class="float">
Выбрать:<br><div id="skin-list"></div>
</div>
<script>
var Dom = {
Skin: 'skin',
FileName: 'file-name',
SkinList: 'skin-list'
}
;(function () {
for (var Name in Dom) Dom[Name] = document.getElementById(Dom[Name])
var Img = new Image()
Img.onload = function () {
var SkinCnt = Img.height / 16
var List = []
for (var i = 1; i <= SkinCnt; i++) {
List.push('<span style="background-position:0px ' + (16 * (1 - i)) +
'px" onclick="SetSkinId(' + i + ')"></span>')
}
//noinspection JSPrimitiveTypeWrapperUsage
Dom.SkinList.innerHTML = List.join(' ')
}
Img.src = 'img/16/skins.png'
})()
//noinspection JSUnusedLocalSymbols
function FileCallback(Name, Type, Data) {
Dom.FileName.innerHTML = Name.replace('<', '<')
Dom.Skin.src = 'data:image;base64,' + Data
if (Dom.Skin.width != 80) {
FixSkin()
}
Snake.DrawSnake()
}
function FixSkin() {
var TilePos = [
[0, 0, 0],
[1, 2, 0],
[0, 1, 0],
[1, 1, 3],
[1, 3, 0]
]
var Transforms = [
[1, 0, 0, 1, 0, 0],
[0, 1, -1, 0, 16, 0],
[-1, 0, 0, -1, 16, 16],
[0, -1, 1, 0, 0, 16]
]
var Canvas = document.createElement('canvas')
Canvas.width = 80
Canvas.height = 64
var Dc = Canvas.getContext('2d')
for (var Tile = 0; Tile < 5; Tile++) {
var TileX = TilePos[Tile][0] << 4
var TileY = TilePos[Tile][1] << 4
var TileDir = TilePos[Tile][2]
for (var Dir = 0; Dir < 4; Dir++) {
var Transform = Transforms[(Dir - TileDir) & 3]
Dc.save()
Dc.translate(Tile << 4, Dir << 4)
Dc.transform.apply(Dc, Transform)
Dc.drawImage(Dom.Skin, TileX, TileY, 16, 16, 0, 0, 16, 16)
Dc.restore()
}
}
Dom.Skin.src = Canvas.toDataURL()
}
function Upload() {
Dom.FileName.innerHTML = ''
Dom.Skin.src = ''
window.frames[0].document.getElementById('file-input').click()
}
function SetSkinSrc(Src, Protocol) {
if (!Src) return
if (!Src.match(/^(?:[a-z]+:)?\/\//)) Src = Protocol + Src
Dom.Skin.src = Src
Dom.FileName.innerHTML = Src
Snake.DrawSnake()
}
function SetSkinUrl() {
SetSkinSrc(prompt('Укажите URL изображения:'), 'http://')
}
function SetSkinId(Id) {
SetSkinSrc('img/16/skin' + Id + '.png', '')
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
function Timer(Handler, Context, Delay) {
this.Handler = Handler
this.Context = Context
this.Delay = Delay
this.Timer = 0
this.Start = function() {
if(this.Timer) return
this.Timer = setInterval(function(ctx) {
ctx.Handler.call(ctx.Context)
}, this.Delay, this)
this.Handler.call(this.Context)
}
this.Stop = function() {
if(!this.Timer) return
var v = this.Timer
this.Timer = 0
clearInterval(v)
}
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
var Board = {
Dc: null,
Width: 0,
Height: 0,
CanvasWidth: 0,
CanvasHeight: 0,
TileWidth: 16,
TileHeight: 16,
LightColors: ['#f99', '#ee6', '#6e6', '#9df'],
CurrentLightColor: '',
Sprites: {
head: 0,
body: 1,
right: 2,
left: 3,
tail: 4
},
//- public ------------------------------------------------------------------
Init: function() {
var Dc = document.getElementById('board').getContext('2d')
this.Dc = Dc
var Canvas = Dc.canvas
this.CurrentLightColor = this.LightColors[0]
this.CanvasWidth = Canvas.width
this.CanvasHeight = Canvas.height
this.Width = Canvas.width / this.TileWidth
this.Height = Canvas.height / this.TileHeight
},
SetLightColor: function(Index) {
this.CurrentLightColor = this.LightColors[Index]
return this
},
ClearSprite: function(x, y) {
var w = this.TileWidth
var h = this.TileHeight
this.Dc.clearRect(x * w, y * h, w, h)
return this
},
DrawSprite: function(Index, Direction, x, y) {
if(typeof Index == 'string' || Index instanceof String) Index = this.Sprites[Index]
var w = this.TileWidth
var h = this.TileHeight
Index *= w
Direction *= h
x *= w
y *= h
var Dc = this.Dc
Dc.clearRect(x, y, w, h)
Dc.fillStyle = this.CurrentLightColor
Dc.fillRect(x, y, w, h)
Dc.globalAlpha = 1.0
Dc.drawImage(Dom.Skin, Index, Direction, w, h, x, y, w, h)
return this
}
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
var Snake = {
Length: 16,
StartX: 1,
StartY: 1,
StartDir: 1,
Path: [1,1,1,2,1,1,0,1,1,2,2,2,2,3,3,0,3,2,3,3,3,0,3,3,0,0,1,0],
FrameDelay: 100,
DirX: [0, 1, 0, -1],
DirY: [-1, 0, 1, 0],
Step: 0,
Color: 0,
Pos: [], // 0 - head, [[x, y, dir]*] (dir - ориентация элемента)
Timer: false,
DrawSnake: function() {
var Pos = this.Pos
var Len = Pos.length - 1
Board.DrawSprite(0, Pos[1][2], Pos[0][0], Pos[0][1])
Board.DrawSprite(4, Pos[Len][2], Pos[Len][0], Pos[Len][1])
var PrevDir = Pos[Len][2]
for(var i = Len - 1; i > 0; i--) {
var Dir = Pos[i][2]
if(Dir == PrevDir) {
Board.DrawSprite(1, Dir, Pos[i][0], Pos[i][1])
}
else {
var Sprite
if(Dir == ((PrevDir + 1) & 3)) Sprite = 2 // направо
else Sprite = 3 // налево
Board.DrawSprite(Sprite, Dir, Pos[i][0], Pos[i][1])
PrevDir = Dir
}
}
},
Prepare: function() {
var x = this.StartX
var y = this.StartY
var Dir = this.StartDir
var dx = this.DirX[Dir ^ 2]
var dy = this.DirY[Dir ^ 2]
var Pos = []
for(var i = this.Length; i > 0; i--) {
Pos.push([x, y, Dir])
x += dx
y += dy
}
this.Pos = Pos
this.DrawSnake()
},
CutTail: function() {
var OldPos = this.Pos.pop()
var TailPos = this.Pos[this.Pos.length - 1]
Board.ClearSprite(OldPos[0], OldPos[1])
Board.DrawSprite(4, TailPos[2], TailPos[0], TailPos[1])
},
MoveHead: function(StepDir) {
var HeadPos = this.Pos[0]
var Sprite = 1 // прямо
var Dir = HeadPos[2]
if(Dir != this.Pos[1][2]) {
if(Dir == ((this.Pos[1][2] + 1) & 3)) Sprite = 2 // направо
else Sprite = 3 // налево
}
var NewPos = [
HeadPos[0] + this.DirX[Dir],
HeadPos[1] + this.DirY[Dir],
StepDir
]
this.Pos.unshift(NewPos)
Board.DrawSprite(Sprite, Dir, HeadPos[0], HeadPos[1])
Board.DrawSprite(0, Dir, NewPos[0], NewPos[1])
},
Move: function() {
var Step = this.Step
if(Step >= this.Path.length) {
Step = 0
this.Color = (this.Color + 1) & 3
Board.SetLightColor(this.Color)
this.DrawSnake()
}
this.MoveHead(this.Path[Step])
this.CutTail()
this.Step = Step + 1
},
//- public ------------------------------------------------------------------
Run: function() {
this.Prepare()
this.Timer = new Timer(this.Move, this, this.FrameDelay)
}
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
window.onload = function() {
Dom.Skin.onload = function () { Snake.DrawSnake() }
Board.Init()
Snake.Run()
}
</script>
</body>
</html>