var Class = require('../utils/Class'); 
var Components = require('../gameobjects/components'); 
var Rectangle = require('../geom/rectangle'); 
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; 
this.physics = { 
}
; 
} 
,
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; 
} 
,
getCollisionGroup: function (){ 
return this.tileset? this.tileset.getTileCollisionGroup(this.index): null ; 
} 
,
getTileData: function (){ 
return this.tileset? this.tileset.getTileData(this.index): null ; 
} 
,
getLeft: function (camera){ 
var tilemapLayer = this.tilemapLayer; 
return (tilemapLayer)? tilemapLayer.tileToWorldX(this.x, camera): this.x * this.baseWidth; 
} 
,
getRight: function (camera){ 
var tilemapLayer = this.tilemapLayer; 
return (tilemapLayer)? this.getLeft(camera) + this.width * tilemapLayer.scaleX: this.getLeft(camera) + this.width; 
} 
,
getTop: function (camera){ 
var tilemapLayer = this.tilemapLayer; 
return tilemapLayer? tilemapLayer.tileToWorldY(this.y, camera) - (this.height - this.baseHeight) * tilemapLayer.scaleY: this.y * this.baseHeight - (this.height - this.baseHeight); 
} 
,
getBottom: function (camera){ 
var tilemapLayer = this.tilemapLayer; 
return tilemapLayer? this.getTop(camera) + this.height * tilemapLayer.scaleY: this.getTop(camera) + this.height; 
} 
,
getBounds: function (camera, output){ 
if (output === undefined) { 
output = new Rectangle(); 
} 
output.x = this.getLeft(); 
output.y = this.getTop(); 
output.width = this.getRight() - output.x; 
output.height = this.getBottom() - output.y; 
return output; 
} 
,
getCenterX: function (camera){ 
return (this.getLeft(camera) + this.getRight(camera)) / 2; 
} 
,
getCenterY: function (camera){ 
return (this.getTop(camera) + this.getBottom(camera)) / 2; 
} 
,
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 (recalculateFaces){ 
if (recalculateFaces === undefined) { 
recalculateFaces = true ; 
} 
this.collideLeft = false ; 
this.collideRight = false ; 
this.collideUp = false ; 
this.collideDown = false ; 
this.faceTop = false ; 
this.faceBottom = false ; 
this.faceLeft = false ; 
this.faceRight = false ; 
if (recalculateFaces) { 
var tilemapLayer = this.tilemapLayer; 
if (tilemapLayer) { 
this.tilemapLayer.calculateFacesAt(this.x, this.y); 
} 
} 
return this; 
} 
,
resetFaces: function (){ 
this.faceTop = false ; 
this.faceBottom = false ; 
this.faceLeft = false ; 
this.faceRight = false ; 
return this; 
} 
,
setCollision: function (left, right, up, down, recalculateFaces){ 
if (right === undefined) { 
right = left; 
} 
if (up === undefined) { 
up = left; 
} 
if (down === undefined) { 
down = left; 
} 
if (recalculateFaces === undefined) { 
recalculateFaces = true ; 
} 
this.collideLeft = left; 
this.collideRight = right; 
this.collideUp = up; 
this.collideDown = down; 
this.faceLeft = left; 
this.faceRight = right; 
this.faceTop = up; 
this.faceBottom = down; 
if (recalculateFaces) { 
var tilemapLayer = this.tilemapLayer; 
if (tilemapLayer) { 
this.tilemapLayer.calculateFacesAt(this.x, this.y); 
} 
} 
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 (){ 
if (this.layer.orientation === 'orthogonal') { 
this.pixelX = this.x * this.baseWidth; 
this.pixelY = this.y * this.baseHeight; 
} 
 else if (this.layer.orientation === 'isometric') { 
this.pixelX = (this.x - this.y) * this.baseWidth * 0.5; 
this.pixelY = (this.x + this.y) * this.baseHeight * 0.5; 
} 
 else if (this.layer.orientation === 'staggered') { 
this.pixelX = this.x * this.baseWidth + this.y % 2 * (this.baseWidth / 2); 
this.pixelY = this.y * (this.baseHeight / 2); 
} 
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); 
} 
}
,
tileset: { 
get: function (){ 
var tilemapLayer = this.layer.tilemapLayer; 
if (tilemapLayer) { 
var tileset = tilemapLayer.gidMap[this.index]; 
if (tileset) { 
return tileset; 
} 
} 
return null ; 
} 
}
,
tilemapLayer: { 
get: function (){ 
return this.layer.tilemapLayer; 
} 
}
,
tilemap: { 
get: function (){ 
var tilemapLayer = this.tilemapLayer; 
return tilemapLayer? tilemapLayer.tilemap: null ; 
} 
}
}
); 
module.exports = Tile;