chroma_solstice/level_editor/object_attributes.lua

require "libs/TSerial"

local BoxVariants = require "box_variants"

local targetFolder = "art"
local reanalyzeCells = true

function getAllAssets()
	local objectnames = {}
	local topFolder = "art"
	local files = love.filesystem.getDirectoryItems(topFolder)
	for _, folder in pairs(files) do
		if string.sub(folder, 1, 1) ~= "_" then
			-- we ignore directories which are prepended w/ an underscore
			if not string.find(folder, "%.") then
				objectnames[folder] = {}
				-- love.filesystem.createDirectory("art/" .. folder)
				-- this is a folder, probably
				local newFiles = love.filesystem.getDirectoryItems(topFolder .. "/" .. folder)
				for _, fileToAnalyze in pairs(newFiles) do
					if fileToAnalyze:find("_r.png") or fileToAnalyze:find("_g.png") or fileToAnalyze:find("_b.png")then
						local color
						if fileToAnalyze:find("_r.png") then color = "red"
						elseif fileToAnalyze:find("_g.png") then color = "green"
						elseif fileToAnalyze:find("_b.png") then color = "blue" end

						local name = fileToAnalyze:sub(1, fileToAnalyze:len() - 6)

						if not globalAssetProperties[name] then
							globalAssetProperties[name] = {}
							globalAssetProperties[name].directory = folder
							globalAssetProperties[name].sprites = {}
							globalAssetProperties[name].preload = false
						end

						-- class comes from a <name>.meta sitting next to the art
						-- (authoritative); default to immoveable if none exists
						local metaPath = topFolder .. "/" .. folder .. "/" .. name .. ".meta"
						if love.filesystem.getInfo(metaPath, "file") then
							globalAssetProperties[name].class = TSerial.unpack(love.filesystem.read(metaPath)).class
						elseif not globalAssetProperties[name].class then
							globalAssetProperties[name].class = "immoveable"
						end

						local sprite = topFolder .. "/" .. folder .. "/" .. fileToAnalyze
						globalAssetProperties[name].sprites[color] = sprite

						-- Precompute the occupied-cell shape once per asset/colour and
						-- cache it here; entities share this table by reference so
						-- collision never rescans pixels at runtime. Keyed per colour
						-- (each channel leaves its own gaps) rather than reset per file.
						globalAssetProperties[name].cells = globalAssetProperties[name].cells or {}
						if not globalAssetProperties[name].cells[color] or reanalyzeCells then
							globalAssetProperties[name].cells[color] = getCellsFromSprite(sprite)
						end
					end
				end
			end
		end
	end

	-- Wired devices intentionally reuse the familiar switch/door artwork. Their
	-- white terminal marker is drawn by the entity class, while these synthetic
	-- asset records make them available to the ordinary palette and brush.
	local function synthetic(name, source, behavior)
		local original = globalAssetProperties[source]
		if not original then return end
		globalAssetProperties[name] = {
			directory = original.directory,
			sprites = original.sprites,
			cells = original.cells,
			class = behavior,
			preload = false,
			synthetic = true,
		}
	end
	synthetic("wired_switch", "switch", "wired_switch")
	synthetic("wired_door", "door", "wired_door")

	return BoxVariants.addTo(globalAssetProperties)
end