Game Development Reference
In-Depth Information
for i=1,_max_ do
curve:setKey(i, i*(1/_max_), i, MOAIEaseType.FLAT)
end
anim = MOAIAnim:new()
anim:reserveLinks(1)
anim:setLink(1, curve, prop1, MOAIProp2D.ATTR_INDEX)
anim:setMode(MOAITimer.LOOP)
anim:start()
prop1:setLoc(100,100)
In this example, we first create the tiles that we can use for our animation:
tile = MOAITileDeck2D.new()
tile:setTexture("stick.png")
tile:setSize(11,1)
tile:setRect(-20,31,20,-31)
Our sprite sheet has 11 frames across and 1 frame down (see Figure
10-7
). The dimensions of all the
frames are 40×62, which we set with
setRect
.
Figure 10-7.
The stick.png image that we shall use for the animation
Setting a negative value for the
rect
dimensions in the
setRect
function flips the object on the axis
with the negative value. Since Moai has an ascending y-axis, we change the scale to set the top-left
corner as the origin (0,0), so our images will show up flipped on the y-axis. To correct that, we use
the
setRect
function with
tile:setRect(-20,31,20,-31)
instead of
tile:setRect(-20,-31,20,31)
.
prop1 = MOAIProp2D.new()
prop1:setDeck(tile)
layer:insertProp(prop1)
We create a
MOAIProp2D
object and set the tile we just created to the prop's deck, and then we insert
that prop in the layer:
curve = MOAIAnimCurve.new()
_max_ = 11
curve:reserveKeys(_max_)
for i=1, _max_ do
curve:setKey(I, I * (1/_max_), I, MOAIEaseType.FLAT)
end
We create a
MOAIAnimCurve
object and then designate the number of frames using the
reserveKeys
function. Then we create the frames and set the index and the time index for each of the frames,
