2
-- A tile repeats a single image across its dimensions. If you do
3
-- not specify a width and height, the sprite will size itself so
4
-- that it's exactly as big as its source image.
12
-- The image to tile across the sprite.
14
-- Property: imageOffset
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-- Setting this moves the top-left corner of the tile inside
16
-- the sprite's rectangle. To draw as normal, set both x and y
18
imageOffset = { x = 0, y = 0 },
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-- private property: keeps track of properties that need action
21
-- to be taken when they are changed
22
-- image must be a nonsense value, not nil,
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-- for the tile to see that an image has been set if it
25
_set = { image = -1 },
27
-- private property imageObj: actual Image instance used to draw
28
-- this is normally set via the image property, but you may set it directly
29
-- so long as you never change that image property afterwards.
31
new = function (self, obj)
34
obj._set.imageOffset = {}
36
if obj.image then obj:updateQuad() end
37
if obj.onNew then obj:onNew() end
41
updateQuad = function (self)
43
self._imageObj = Cached:image(self.image)
44
if not self.width then self.width = self._imageObj:getWidth() end
45
if not self.height then self.height = self._imageObj:getHeight() end
47
self._quad = love.graphics.newQuad(self.imageOffset.x, self.imageOffset.y,
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self.width, self.height,
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self._imageObj:getWidth(), self._imageObj:getHeight())
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self._imageObj:setWrap('repeat', 'repeat')
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self._set.image = self.image
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self._set.imageOffset.x = self.imageOffset.x
53
self._set.imageOffset.y = self.imageOffset.y
57
draw = function (self, x, y)
58
if not self.visible or self.alpha <= 0 then return end
60
x = math.floor(x or self.x)
61
y = math.floor(y or self.y)
64
assert(type(x) == 'number', 'visible tile does not have a numeric x property')
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assert(type(y) == 'number', 'visible tile does not have a numeric y property')
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assert(type(self.width) == 'number', 'visible tile does not have a numeric width property')
67
assert(type(self.height) == 'number', 'visible tile does not have a numeric height property')
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if not self.image then return end
72
-- set color if needed
74
local colored = self.alpha ~= 1 or self.tint[1] ~= 1 or self.tint[2] ~= 1 or self.tint[3] ~= 1
77
love.graphics.setColor(self.tint[1] * 255, self.tint[2] * 255, self.tint[3] * 255, self.alpha * 255)
80
-- if the source image or offset has changed, we need to recreate our quad
82
if self.image and (self.image ~= self._set.image or
83
self.imageOffset.x ~= self._set.imageOffset.x or
84
self.imageOffset.y ~= self._set.imageOffset.y) then
89
local scaleX = self.scale * self.distort.x
90
local scaleY = self.scale * self.distort.y
92
if self.flipX then scaleX = scaleX * -1 end
93
if self.flipY then scaleY = scaleY * -1 end
95
love.graphics.drawq(self._imageObj, self._quad, x + self.width / 2, y + self.height / 2, self.rotation,
96
scaleX, scaleY, self.width / 2, self.height / 2)
101
love.graphics.setColor(255, 255, 255, 255)
105
__tostring = function (self)
106
local result = 'Tile (x: ' .. self.x .. ', y: ' .. self.y ..
107
', w: ' .. self.width .. ', h: ' .. self.height .. ', '
109
result = result .. 'image \'' .. self.image .. '\', '
112
result = result .. 'active, '
114
result = result .. 'inactive, '
118
result = result .. 'visible, '
120
result = result .. 'invisible, '
124
result = result .. 'solid'
126
result = result .. 'not solid'