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Add a script to dump SPR images as PNG #111

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Aug 14, 2023
Merged

Add a script to dump SPR images as PNG #111

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1 change: 1 addition & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
*.log
data.grf
*.extracted.grf/*
Exports
*.mp3
*.bin
*.exe
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27 changes: 27 additions & 0 deletions Tools/RagnarokTools.lua
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Expand Up @@ -13,6 +13,7 @@ local table_insert = table.insert

local RagnarokGND = require("Core.FileFormats.RagnarokGND")
local RagnarokGRF = require("Core.FileFormats.RagnarokGRF")
local RagnarokSPR = require("Core.FileFormats.RagnarokSPR")

function RagnarokTools:GenerateMapListFromGRF(grfFilePath)
grfFilePath = grfFilePath or "data.grf"
Expand Down Expand Up @@ -151,4 +152,30 @@ function RagnarokTools:ExportLightmapsFromGND(gndFileContents)
stbi.bindings.stbi_flip_vertically_on_write(false)
end

function RagnarokTools:ExportImagesFromSPR(sprFileContents, outputDirectory)
outputDirectory = outputDirectory or "Exports"
C_FileSystem.MakeDirectoryTree(outputDirectory)

local spr = RagnarokSPR()
spr:DecodeFileContents(sprFileContents)

local palette = spr:GetEmbeddedColorPalette(sprFileContents)

for index, image in ipairs(spr.bmpImages) do
local indexedColorImageBytes = image.pixelBuffer
local rgbaImageBytes = RagnarokSPR:ApplyColorPalette(indexedColorImageBytes, palette)
local pngFileContents = C_ImageProcessing.EncodePNG(rgbaImageBytes, image.pixelWidth, image.pixelHeight)

local pngFilePath = path.join(outputDirectory, format("bmp-frame-%d.png", index))
C_FileSystem.WriteFile(pngFilePath, tostring(pngFileContents))
end

for index, image in ipairs(spr.tgaImages) do
local pngFileContents = C_ImageProcessing.EncodePNG(image.pixelBuffer, image.pixelWidth, image.pixelHeight)

local pngFilePath = path.join(outputDirectory, format("tga-frame-%d.png", index))
C_FileSystem.WriteFile(pngFilePath, tostring(pngFileContents))
end
end

return RagnarokTools
15 changes: 15 additions & 0 deletions Tools/dump-spr-images.lua
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Original file line number Diff line number Diff line change
@@ -0,0 +1,15 @@
local RagnarokGRF = require("Core.FileFormats.RagnarokGRF")
local RagnarokTools = require("Tools.RagnarokTools")

local sprFilePath = arg[1] or "data/sprite/몬스터/bakonawa.spr"
printf("Dumping SPR frames: %s", sprFilePath)

local grfPath = "data.grf"
local grf = RagnarokGRF()
grf:Open(grfPath)

local sprBytes = grf:ExtractFileInMemory(sprFilePath)

grf:Close()

RagnarokTools:ExportImagesFromSPR(sprBytes)
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