version 0.21

mods/WorldEdit/worldedit_commands/depends.txt

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+worldedit

mods/WorldEdit/worldedit_commands/mark.lua

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+worldedit.marker1 = {}
+worldedit.marker2 = {}
+worldedit.marker_region = {}
+
+--marks worldedit region position 1
+worldedit.mark_pos1 = function(name)
+	local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+
+	if pos1 ~= nil then
+		--make area stay loaded
+		local manip = minetest.get_voxel_manip()
+		manip:read_from_map(pos1, pos1)
+	end
+	if worldedit.marker1[name] ~= nil then --marker already exists
+		worldedit.marker1[name]:remove() --remove marker
+		worldedit.marker1[name] = nil
+	end
+	if pos1 ~= nil then
+		--add marker
+		worldedit.marker1[name] = minetest.add_entity(pos1, "worldedit:pos1")
+		if worldedit.marker1[name] ~= nil then
+			worldedit.marker1[name]:get_luaentity().name = name
+		end
+	end
+	worldedit.mark_region(name)
+end
+
+--marks worldedit region position 2
+worldedit.mark_pos2 = function(name)
+	local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+
+	if pos2 ~= nil then
+		--make area stay loaded
+		local manip = minetest.get_voxel_manip()
+		manip:read_from_map(pos2, pos2)
+	end
+	if worldedit.marker2[name] ~= nil then --marker already exists
+		worldedit.marker2[name]:remove() --remove marker
+		worldedit.marker2[name] = nil
+	end
+	if pos2 ~= nil then
+		--add marker
+		worldedit.marker2[name] = minetest.add_entity(pos2, "worldedit:pos2")
+		if worldedit.marker2[name] ~= nil then
+			worldedit.marker2[name]:get_luaentity().name = name
+		end
+	end
+	worldedit.mark_region(name)
+end
+
+worldedit.mark_region = function(name)
+	local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+
+	if worldedit.marker_region[name] ~= nil then --marker already exists
+		--wip: make the area stay loaded somehow
+		for _, entity in ipairs(worldedit.marker_region[name]) do
+			entity:remove()
+		end
+		worldedit.marker_region[name] = nil
+	end
+	if pos1 ~= nil and pos2 ~= nil then
+		local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
+		local thickness = 0.2
+		local sizex, sizey, sizez = (1 + pos2.x - pos1.x) / 2, (1 + pos2.y - pos1.y) / 2, (1 + pos2.z - pos1.z) / 2
+
+		--make area stay loaded
+		local manip = minetest.get_voxel_manip()
+		manip:read_from_map(pos1, pos2)
+
+		local markers = {}
+
+		--XY plane markers
+		for _, z in ipairs({pos1.z - 0.5, pos2.z + 0.5}) do
+			local marker = minetest.add_entity({x=pos1.x + sizex - 0.5, y=pos1.y + sizey - 0.5, z=z}, "worldedit:region_cube")
+			marker:set_properties({
+				visual_size={x=sizex * 2, y=sizey * 2},
+				collisionbox = {-sizex, -sizey, -thickness, sizex, sizey, thickness},
+			})
+			marker:get_luaentity().name = name
+			table.insert(markers, marker)
+		end
+
+		--YZ plane markers
+		for _, x in ipairs({pos1.x - 0.5, pos2.x + 0.5}) do
+			local marker = minetest.add_entity({x=x, y=pos1.y + sizey - 0.5, z=pos1.z + sizez - 0.5}, "worldedit:region_cube")
+			marker:set_properties({
+				visual_size={x=sizez * 2, y=sizey * 2},
+				collisionbox = {-thickness, -sizey, -sizez, thickness, sizey, sizez},
+			})
+			marker:setyaw(math.pi / 2)
+			marker:get_luaentity().name = name
+			table.insert(markers, marker)
+		end
+
+		worldedit.marker_region[name] = markers
+	end
+end
+
+minetest.register_entity(":worldedit:pos1", {
+	initial_properties = {
+		visual = "cube",
+		visual_size = {x=1.1, y=1.1},
+		textures = {"worldedit_pos1.png", "worldedit_pos1.png",
+			"worldedit_pos1.png", "worldedit_pos1.png",
+			"worldedit_pos1.png", "worldedit_pos1.png"},
+		collisionbox = {-0.55, -0.55, -0.55, 0.55, 0.55, 0.55},
+		physical = false,
+	},
+	on_step = function(self, dtime)
+		if worldedit.marker1[self.name] == nil then
+			self.object:remove()
+		end
+	end,
+	on_punch = function(self, hitter)
+		self.object:remove()
+		worldedit.marker1[self.name] = nil
+	end,
+})
+
+minetest.register_entity(":worldedit:pos2", {
+	initial_properties = {
+		visual = "cube",
+		visual_size = {x=1.1, y=1.1},
+		textures = {"worldedit_pos2.png", "worldedit_pos2.png",
+			"worldedit_pos2.png", "worldedit_pos2.png",
+			"worldedit_pos2.png", "worldedit_pos2.png"},
+		collisionbox = {-0.55, -0.55, -0.55, 0.55, 0.55, 0.55},
+		physical = false,
+	},
+	on_step = function(self, dtime)
+		if worldedit.marker2[self.name] == nil then
+			self.object:remove()
+		end
+	end,
+	on_punch = function(self, hitter)
+		self.object:remove()
+		worldedit.marker2[self.name] = nil
+	end,
+})
+
+minetest.register_entity(":worldedit:region_cube", {
+	initial_properties = {
+		visual = "upright_sprite",
+		visual_size = {x=1.1, y=1.1},
+		textures = {"worldedit_cube.png"},
+		visual_size = {x=10, y=10},
+		physical = false,
+	},
+	on_step = function(self, dtime)
+		if worldedit.marker_region[self.name] == nil then
+			self.object:remove()
+			return
+		end
+	end,
+	on_punch = function(self, hitter)
+		for _, entity in ipairs(worldedit.marker_region[self.name]) do
+			entity:remove()
+		end
+		worldedit.marker_region[self.name] = nil
+	end,
+})

mods/WorldEdit/worldedit_commands/safe.lua

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+local safe_region_callback = {}
+local safe_region_param = {}
+
+check_region = function(name, param)
+	local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name] --obtain positions
+	if pos1 == nil or pos2 == nil then
+		worldedit.player_notify(name, "no region selected")
+		return nil
+	end
+	return worldedit.volume(pos1, pos2)
+end
+
+--`callback` is a callback to run when the user confirms
+--`nodes_needed` is a function accepting `param`, `pos1`, and `pos2` to calculate the number of nodes needed
+safe_region = function(callback, nodes_needed)
+	--default node volume calculation
+	nodes_needed = nodes_needed or check_region
+
+	return function(name, param)
+		--check if the operation applies to a safe number of nodes
+		local count = nodes_needed(name, param)
+		if count == nil then return end --invalid command
+		if count < 10000 then
+			return callback(name, param)
+		end
+
+		--save callback to call later
+		safe_region_callback[name], safe_region_param[name] = callback, param
+		worldedit.player_notify(name, "WARNING: this operation could affect up to " .. count .. " nodes; type //y to continue or //n to cancel")
+	end
+end
+
+minetest.register_chatcommand("/y", {
+	params = "",
+	description = "Confirm a pending operation",
+	func = function(name)
+		local callback, param = safe_region_callback[name], safe_region_param[name]
+		if not callback then
+			worldedit.player_notify(name, "no operation pending")
+			return
+		end
+
+		--obtain positions
+		local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+		if pos1 == nil or pos2 == nil then
+			worldedit.player_notify(name, "no region selected")
+			return
+		end
+
+		safe_region_callback[name], safe_region_param[name] = nil, nil --reset pending operation
+		callback(name, param, pos1, pos2)
+	end,
+})
+
+minetest.register_chatcommand("/n", {
+	params = "",
+	description = "Confirm a pending operation",
+	func = function(name)
+		if not safe_region_callback[name] then
+			worldedit.player_notify(name, "no operation pending")
+			return
+		end
+		safe_region_callback[name], safe_region_param[name] = nil, nil
+	end,
+})