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December 17, 2015 15:39
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imageloader
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function setup() | |
LoadImages() --do this first, on its own | |
end | |
--put your setup code in here | |
function setup2() | |
print("Doing the rest of the setup....") | |
end | |
--this loads the images | |
function LoadImages() | |
imageStatus="Ready" --tells draw it's ok to draw the scene (will be turned off if we have to download images) | |
output.clear() | |
--pass through Codea name of image and internet url | |
--not in Codea, will be downloaded and saved | |
img1=LoadImage("Dropbox:3D-tree", | |
"http://i1303.photobucket.com/albums/ag142/ignatz_mouse/map-tree27c_zpsd56f4f5f.png") | |
img2=LoadImage("SpaceCute:Background") | |
img3=LoadImage("Dropbox:3D-wall", | |
"http://i1303.photobucket.com/albums/ag142/ignatz_mouse/map-stonewall1_zps875ba0f0.png") | |
if imageStatus=="Ready" then setup2() end | |
end | |
--downloads images one by one | |
function LoadImage(fileName,url) | |
local i=readImage(fileName) | |
if i~=nil then return i end | |
--not found, we need to download, add to queue (ie table) | |
if imageTable==nil then imageTable={} end | |
imageTable[#imageTable+1]={name=fileName,url=url} | |
print('Queueing',fileName) | |
imageStatus='Loading' | |
--if the first one, go ahead and download | |
if #imageTable==1 then | |
http.request(imageTable[1].url,ImageDownloaded) | |
print('loading',imageTable[1].name) | |
end | |
end | |
--saves downloaded images | |
function ImageDownloaded(img) | |
print(imageTable[1].name,'loaded') | |
saveImage(imageTable[1].name,img) --save | |
table.remove(imageTable,1) | |
--load next one if we have any more to do | |
if #imageTable>0 then | |
http.request(imageTable[1].url,ImageDownloaded) | |
print('loading',imageTable[1].name) | |
else | |
LoadImages() | |
end | |
end | |
function draw() | |
background(220) | |
if imageStatus=="Loading" then return end | |
sprite(img1,100,100,100) | |
sprite(img2,200,200,100) | |
sprite(img3,300,300,100) | |
end | |
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