world generation, ores, ingots and more!

mods/worldedit/worldedit_brush/init.lua

@@ -0,0 +1,125 @@
+if minetest.raycast == nil then
+	error(
+		"worldedit_brush requires at least Minetest 5.0"
+	)
+end
+
+local BRUSH_MAX_DIST = 150
+local brush_on_use = function(itemstack, placer)
+	local meta = itemstack:get_meta()
+	local name = placer:get_player_name()
+
+	local cmd = meta:get_string("command")
+	if cmd == "" then
+		worldedit.player_notify(name,
+			"This brush is not bound, use //brush to bind a command to it.")
+		return false
+	end
+
+	local cmddef = worldedit.registered_commands[cmd]
+	if cmddef == nil then return false end -- shouldn't happen as //brush checks this
+
+	local has_privs, missing_privs = minetest.check_player_privs(name, cmddef.privs)
+	if not has_privs then
+		worldedit.player_notify(name,
+			"Missing privileges: " .. table.concat(missing_privs, ", "))
+		return false
+	end
+
+	local raybegin = vector.add(placer:get_pos(),
+		{x=0, y=placer:get_properties().eye_height, z=0})
+	local rayend = vector.add(raybegin, vector.multiply(placer:get_look_dir(), BRUSH_MAX_DIST))
+	local ray = minetest.raycast(raybegin, rayend, false, true)
+	local pointed_thing = ray:next()
+	if pointed_thing == nil then
+		worldedit.player_notify(name, "Too far away.")
+		return false
+	end
+
+	assert(pointed_thing.type == "node")
+	worldedit.pos1[name] = pointed_thing.under
+	worldedit.pos2[name] = nil
+	worldedit.marker_update(name)
+
+	-- this isn't really clean...
+	local player_notify_old = worldedit.player_notify
+	worldedit.player_notify = function(name, msg)
+		if string.match(msg, "^%d") then return end -- discard "1234 nodes added."
+		return player_notify_old(name, msg)
+	end
+
+	assert(cmddef.require_pos < 2)
+	local parsed = {cmddef.parse(meta:get_string("params"))}
+	if not table.remove(parsed, 1) then return false end -- shouldn't happen
+
+	minetest.log("action", string.format("%s uses WorldEdit brush (//%s) at %s",
+		name, cmd, minetest.pos_to_string(pointed_thing.under)))
+	cmddef.func(name, unpack(parsed))
+
+	worldedit.player_notify = player_notify_old
+	return true
+end
+
+minetest.register_tool(":worldedit:brush", {
+	description = "WorldEdit Brush",
+	inventory_image = "worldedit_brush.png",
+	stack_max = 1, -- no need to stack these (metadata prevents this anyway)
+	range = 0,
+	on_use = function(itemstack, placer, pointed_thing)
+		brush_on_use(itemstack, placer)
+		return itemstack -- nothing consumed, nothing changed
+	end,
+})
+
+worldedit.register_command("brush", {
+	privs = {worldedit=true},
+	params = "none/<cmd> [parameters]",
+	description = "Assign command to WorldEdit brush item",
+	parse = function(param)
+		local found, _, cmd, params = param:find("^([^%s]+)%s+(.+)$")
+		if not found then
+			params = ""
+			found, _, cmd = param:find("^(.+)$")
+		end
+		if not found then
+			return false
+		end
+		return true, cmd, params
+	end,
+	func = function(name, cmd, params)
+		local itemstack = minetest.get_player_by_name(name):get_wielded_item()
+		if itemstack == nil or itemstack:get_name() ~= "worldedit:brush" then
+			worldedit.player_notify(name, "Not holding brush item.")
+			return
+		end
+
+		cmd = cmd:lower()
+		local meta = itemstack:get_meta()
+		if cmd == "none" then
+			meta:from_table(nil)
+			worldedit.player_notify(name, "Brush assignment cleared.")
+		else
+			local cmddef = worldedit.registered_commands[cmd]
+			if cmddef == nil or cmddef.require_pos ~= 1 then
+				worldedit.player_notify(name, "//" .. cmd .. " cannot be used with brushes")
+				return
+			end
+
+			-- Try parsing command params so we can give the user feedback
+			local ok, err = cmddef.parse(params)
+			if not ok then
+				err = err or "invalid usage"
+				worldedit.player_notify(name, "Error with brush command: " .. err)
+				return
+			end
+
+			meta:set_string("command", cmd)
+			meta:set_string("params", params)
+			local fullcmd = "//" .. cmd .. " " .. params
+			meta:set_string("description",
+				minetest.registered_tools["worldedit:brush"].description .. ": " .. fullcmd)
+			worldedit.player_notify(name, "Brush assigned to command: " .. fullcmd)
+		end
+		minetest.get_player_by_name(name):set_wielded_item(itemstack)
+	end,
+})

mods/worldedit/worldedit_brush/mod.conf

@@ -0,0 +1,3 @@
+name = worldedit_brush
+description = WorldEdit brush
+depends = worldedit, worldedit_commands