level editor improvements

_helpers.lua

@@ -16,3 +16,32 @@ end
 function lerp(a, b, amount)
 	return (1 - amount) * a + (amount * b)
 end
+
+-- Write to the project tree itself (not LÖVE's save dir) so edits persist in the
+-- repo during dev. Uses plain io.open against love.filesystem.getSource(), which
+-- is the absolute project path when running `love .` from a folder. Falls back to
+-- love.filesystem.write (save dir) if the source is a packaged .love archive.
+function writeToSource(relPath, contents)
+	local base = love.filesystem.getSource()
+	local file = io.open(base .. "/" .. relPath, "w")
+	if file then
+		file:write(contents)
+		file:close()
+		return true
+	end
+	return love.filesystem.write(relPath, contents)
+end
+
+-- Read from the project tree directly so a stale copy in LÖVE's save directory
+-- can't shadow the real source file. Falls back to love.filesystem for a
+-- packaged .love.
+function readFromSource(relPath)
+	local base = love.filesystem.getSource()
+	local file = io.open(base .. "/" .. relPath, "r")
+	if file then
+		local contents = file:read("*a")
+		file:close()
+		return contents
+	end
+	return love.filesystem.read(relPath)
+end