var Class = require('../../utils/Class'); 
var Components = require('../components'); 
var Tile = new Class({ 
Mixins: [Components.Alpha, Components.Flip, Components.Visible] ,
initialize: function Tile(layer, index, x, y, width, height, baseWidth, baseHeight){ 
this.layer = layer; 
this.index = index; 
this.x = x; 
this.y = y; 
this.width = width; 
this.height = height; 
this.baseWidth = (baseWidth !== undefined)? baseWidth: width; 
this.baseHeight = (baseHeight !== undefined)? baseHeight: height; 
this.pixelX = 0; 
this.pixelY = 0; 
this.updatePixelXY(); 
this.properties = { 
}
; 
this.rotation = 0; 
this.collideLeft = false ; 
this.collideRight = false ; 
this.collideUp = false ; 
this.collideDown = false ; 
this.faceLeft = false ; 
this.faceRight = false ; 
this.faceTop = false ; 
this.faceBottom = false ; 
this.collisionCallback = null ; 
this.collisionCallbackContext = this; 
this.tint = 16777215; 
} 
,
containsPoint: function (x, y){ 
return !(x < this.pixelX || y < this.pixelY || x > this.right || y > this.bottom); 
} 
,
copy: function (tile){ 
this.index = tile.index; 
this.alpha = tile.alpha; 
this.properties = tile.properties; 
this.visible = tile.visible; 
this.setFlip(tile.flipX, tile.flipY); 
this.tint = tile.tint; 
this.rotation = tile.rotation; 
this.collideUp = tile.collideUp; 
this.collideDown = tile.collideDown; 
this.collideLeft = tile.collideLeft; 
this.collideRight = tile.collideRight; 
this.collisionCallback = tile.collisionCallback; 
this.collisionCallbackContext = tile.collisionCallbackContext; 
return this; 
} 
,
destroy: function (){ 
this.collisionCallback = undefined; 
this.collisionCallbackContext = undefined; 
this.properties = undefined; 
} 
,
intersects: function (x, y, right, bottom){ 
return !(right <= this.pixelX || bottom <= this.pixelY || x >= this.right || y >= this.bottom); 
} 
,
isInteresting: function (collides, faces){ 
if (collides && faces) { 
return (this.canCollide || this.hasInterestingFace); 
} 
 else if (collides) { 
return this.collides; 
} 
 else if (faces) { 
return this.hasInterestingFace; 
} 
return false ; 
} 
,
resetCollision: function (){ 
this.collideLeft = false ; 
this.collideRight = false ; 
this.collideUp = false ; 
this.collideDown = false ; 
this.faceTop = false ; 
this.faceBottom = false ; 
this.faceLeft = false ; 
this.faceRight = false ; 
return this; 
} 
,
resetFaces: function (){ 
this.faceTop = false ; 
this.faceBottom = false ; 
this.faceLeft = false ; 
this.faceRight = false ; 
return this; 
} 
,
setCollision: function (left, right, up, down){ 
if (right === undefined) { 
right = left; 
} 
if (up === undefined) { 
up = left; 
} 
if (down === undefined) { 
down = left; 
} 
this.collideLeft = left; 
this.collideRight = right; 
this.collideUp = up; 
this.collideDown = down; 
this.faceLeft = left; 
this.faceRight = right; 
this.faceTop = up; 
this.faceBottom = down; 
return this; 
} 
,
setCollisionCallback: function (callback, context){ 
if (callback === null ) { 
this.collisionCallback = undefined; 
this.collisionCallbackContext = undefined; 
} 
 else { 
this.collisionCallback = callback; 
this.collisionCallbackContext = context; 
} 
return this; 
} 
,
setSize: function (tileWidth, tileHeight, baseWidth, baseHeight){ 
if (tileWidth !== undefined) { 
this.width = tileWidth; 
} 
if (tileHeight !== undefined) { 
this.height = tileHeight; 
} 
if (baseWidth !== undefined) { 
this.baseWidth = baseWidth; 
} 
if (baseHeight !== undefined) { 
this.baseHeight = baseHeight; 
} 
this.updatePixelXY(); 
return this; 
} 
,
updatePixelXY: function (){ 
this.pixelX = this.x * this.baseWidth; 
this.pixelY = this.y * this.baseHeight - (this.height - this.baseHeight); 
return this; 
} 
,
canCollide: { 
get: function (){ 
return (this.collideLeft || this.collideRight || this.collideUp || this.collideDown || this.collisionCallback); 
} 
}
,
collides: { 
get: function (){ 
return (this.collideLeft || this.collideRight || this.collideUp || this.collideDown); 
} 
}
,
hasInterestingFace: { 
get: function (){ 
return (this.faceTop || this.faceBottom || this.faceLeft || this.faceRight); 
} 
}
,
left: { 
get: function (){ 
return this.pixelX; 
} 
}
,
right: { 
get: function (){ 
return this.pixelX + this.width; 
} 
}
,
top: { 
get: function (){ 
return this.pixelY; 
} 
}
,
bottom: { 
get: function (){ 
return this.pixelY + this.height; 
} 
}
,
centerX: { 
get: function (){ 
return this.pixelX + this.width / 2; 
} 
}
,
centerY: { 
get: function (){ 
return this.pixelY + this.height / 2; 
} 
}
}
); 
module.exports = Tile;