vh
651193674c
tools/aseprite/maps/ holds the source of truth: char-grid pixel maps + shared palette for five _ph placeholder sprites (M03 32px per MOE.md design law cues — round silhouette, mismatched eyes, bolted hardpoint, pillar feet; grunt 16px untagged olive; burster 20px HEAT glow band; KINETIC slug; scrap diamond). Two interchangeable renderers: gen_sprites.lua (aseprite -b, emits .aseprite + .png — run on any machine with Aseprite) and preview.py (Pillow, identical PNGs headless + nearest-neighbor zoom for review). Outputs gitignored; greybox scenes untouched — art stays out of the game per the greybox rule.
74 lines
2.3 KiB
Lua
74 lines
2.3 KiB
Lua
-- Headless Aseprite sprite generator for U R M03 placeholder sprites.
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--
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-- Run from the repo root:
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-- aseprite -b --script tools/aseprite/gen_sprites.lua
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-- Optional params:
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-- aseprite -b --script-param out=assets/sprites_ph \
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-- --script-param maps=tools/aseprite/maps \
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-- --script tools/aseprite/gen_sprites.lua
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--
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-- Source of truth is the text pixel maps in tools/aseprite/maps/
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-- (shared with tools/aseprite/preview.py, which renders identical
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-- PNGs without Aseprite). Outputs .aseprite + .png per map.
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-- All output is _ph placeholder-grade per the asset policy.
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local params = app.params or {}
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local MAPS_DIR = params["maps"] or "tools/aseprite/maps"
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local OUT_DIR = params["out"] or "assets/sprites_ph"
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local SPRITES = { "m03_ph", "grunt_ph", "burster_ph", "slug_ph", "scrap_ph" }
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local function parse_palette(path)
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local pal = {}
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for line in io.lines(path) do
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local ch, hex = line:match("^(%S)%s+(%x%x%x%x%x%x)%s*$")
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if ch and ch ~= "#" then
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local v = tonumber(hex, 16)
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pal[ch] = {
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r = math.floor(v / 65536) % 256,
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g = math.floor(v / 256) % 256,
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b = v % 256,
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}
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end
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end
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return pal
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end
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local function parse_map(path)
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local rows = {}
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for line in io.lines(path) do
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if #line > 0 then
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rows[#rows + 1] = line
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assert(#line == #rows[1],
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path .. ": row " .. #rows .. " width " .. #line .. " != " .. #rows[1])
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end
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end
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return rows
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end
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if app.fs and app.fs.makeAllDirectories then
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app.fs.makeAllDirectories(OUT_DIR)
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end
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local pal = parse_palette(MAPS_DIR .. "/palette.txt")
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for _, name in ipairs(SPRITES) do
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local rows = parse_map(MAPS_DIR .. "/" .. name .. ".txt")
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local w, h = #rows[1], #rows
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local spr = Sprite(w, h, ColorMode.RGB)
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local img = spr.cels[1].image
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for y, row in ipairs(rows) do
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for x = 1, w do
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local ch = row:sub(x, x)
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if ch ~= "." then
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local c = assert(pal[ch], name .. ": unknown palette char '" .. ch .. "'")
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img:putPixel(x - 1, y - 1, app.pixelColor.rgba(c.r, c.g, c.b, 255))
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end
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end
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end
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spr:saveAs(OUT_DIR .. "/" .. name .. ".aseprite")
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spr:saveCopyAs(OUT_DIR .. "/" .. name .. ".png")
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spr:close()
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print("wrote " .. OUT_DIR .. "/" .. name .. ".aseprite (+.png) " .. w .. "x" .. h)
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end
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