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-- Simple example to store compressed image to file.
-- To store multiple assets, some sort of addressing would be required.
package.path = package.path..";"..RL.GetBasePath().."../resources/lib/?.lua"
Vector2 = require( "vector2" )
local texture = nil
local dataFileName = "data"
local compress = true
-- local compress = false
local function writeDataFile( path )
local image = RL.LoadImage( RL.GetBasePath().."../resources/images/arcade_platformerV2.png" )
if not image then
return
end
local imgData = {
size = Vector2:newT( RL.GetImageSize( image ) ),
mipmaps = RL.GetImageMipmaps( image ),
format = RL.GetImageFormat( image ),
data = RL.GetImageData( image ),
}
-- Header and image data. We devide imgData.data by 4 since we use unsigned ints as buffer type.
local totalLength = 4 + RL.GetBufferLength( imgData.data ) / 4
local buffer = RL.LoadBufferFormatted( totalLength, RL.BUFFER_UNSIGNED_INT, 0 )
RL.SetBufferData( buffer, 0, imgData.size.x )
RL.SetBufferData( buffer, 1, imgData.size.y )
RL.SetBufferData( buffer, 2, imgData.mipmaps )
RL.SetBufferData( buffer, 3, imgData.format )
RL.CopyBufferData( buffer, imgData.data, 4, 0, RL.GetBufferLength( imgData.data ) )
if compress then
RL.ExportBuffer( RL.CompressData( buffer ), path )
else
RL.ExportBuffer( buffer, path )
end
end
local function loadDataFile( path )
local buffer = RL.LoadBufferFromFile( path, RL.BUFFER_UNSIGNED_INT )
if not buffer then
return
end
if compress then
buffer = RL.DecompressData( buffer )
end
local imgData = {
size = Vector2:newT( RL.GetBufferData( buffer, 0, 2 ) ),
mipmaps = RL.GetBufferData( buffer, 2, 1 )[1],
format = RL.GetBufferData( buffer, 3, 1 )[1],
data = nil,
}
local imageDataSize = RL.GetPixelDataSize( imgData.size, imgData.format )
imgData.data = RL.LoadBufferFormatted( imageDataSize, RL.BUFFER_UNSIGNED_CHAR, 0 )
RL.CopyBufferData( imgData.data, buffer, 0, 4, imageDataSize / 4 )
local image = RL.LoadImageFromData(
imgData.data,
imgData.size,
imgData.mipmaps,
imgData.format
)
texture = RL.LoadTextureFromImage( image )
end
function RL.init()
RL.SetWindowTitle( "Compressed resource file" )
RL.SetWindowState( RL.FLAG_VSYNC_HINT )
local path = RL.GetBasePath()..dataFileName
writeDataFile( path )
loadDataFile( path )
end
function RL.update( delta )
end
function RL.draw()
RL.ClearBackground( RL.RAYWHITE )
if texture then
RL.DrawTextureEx( texture, { 0, 0 }, 0, 2, RL.WHITE )
end
end
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