133 lines
4.0 KiB
Lua
133 lines
4.0 KiB
Lua
--- Functions for visibly hiding nodes
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-- @module worldedit.visualization
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minetest.register_node("worldedit:placeholder", {
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drawtype = "airlike",
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paramtype = "light",
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sunlight_propagates = true,
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diggable = false,
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pointable = false,
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walkable = false,
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groups = {not_in_creative_inventory=1},
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})
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--- Hides all nodes in a region defined by positions `pos1` and `pos2` by
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-- non-destructively replacing them with invisible nodes.
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-- @return The number of nodes hidden.
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function worldedit.hide(pos1, pos2)
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pos1, pos2 = worldedit.sort_pos(pos1, pos2)
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worldedit.keep_loaded(pos1, pos2)
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local pos = vector.new(pos1.x, 0, 0)
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local get_node, get_meta, swap_node = minetest.get_node,
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minetest.get_meta, minetest.swap_node
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while pos.x <= pos2.x do
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pos.y = pos1.y
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while pos.y <= pos2.y do
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pos.z = pos1.z
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while pos.z <= pos2.z do
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local node = get_node(pos)
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if node.name ~= "air" and node.name ~= "worldedit:placeholder" then
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-- Save the node's original name
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get_meta(pos):set_string("worldedit_placeholder", node.name)
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-- Swap in placeholder node
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node.name = "worldedit:placeholder"
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swap_node(pos, node)
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end
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pos.z = pos.z + 1
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end
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pos.y = pos.y + 1
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end
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pos.x = pos.x + 1
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end
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return worldedit.volume(pos1, pos2)
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end
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--- Suppresses all instances of `node_name` in a region defined by positions
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-- `pos1` and `pos2` by non-destructively replacing them with invisible nodes.
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-- @return The number of nodes suppressed.
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function worldedit.suppress(pos1, pos2, node_name)
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-- Ignore placeholder supression
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if node_name == "worldedit:placeholder" then
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return 0
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end
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pos1, pos2 = worldedit.sort_pos(pos1, pos2)
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worldedit.keep_loaded(pos1, pos2)
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local nodes = minetest.find_nodes_in_area(pos1, pos2, node_name)
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local get_node, get_meta, swap_node = minetest.get_node,
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minetest.get_meta, minetest.swap_node
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for _, pos in ipairs(nodes) do
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local node = get_node(pos)
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-- Save the node's original name
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get_meta(pos):set_string("worldedit_placeholder", node.name)
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-- Swap in placeholder node
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node.name = "worldedit:placeholder"
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swap_node(pos, node)
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end
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return #nodes
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end
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--- Highlights all instances of `node_name` in a region defined by positions
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-- `pos1` and `pos2` by non-destructively hiding all other nodes.
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-- @return The number of nodes found.
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function worldedit.highlight(pos1, pos2, node_name)
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pos1, pos2 = worldedit.sort_pos(pos1, pos2)
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worldedit.keep_loaded(pos1, pos2)
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local pos = vector.new(pos1.x, 0, 0)
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local get_node, get_meta, swap_node = minetest.get_node,
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minetest.get_meta, minetest.swap_node
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local count = 0
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while pos.x <= pos2.x do
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pos.y = pos1.y
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while pos.y <= pos2.y do
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pos.z = pos1.z
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while pos.z <= pos2.z do
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local node = get_node(pos)
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if node.name == node_name then -- Node found
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count = count + 1
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elseif node.name ~= "worldedit:placeholder" then -- Hide other nodes
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-- Save the node's original name
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get_meta(pos):set_string("worldedit_placeholder", node.name)
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-- Swap in placeholder node
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node.name = "worldedit:placeholder"
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swap_node(pos, node)
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end
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pos.z = pos.z + 1
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end
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pos.y = pos.y + 1
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end
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pos.x = pos.x + 1
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end
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return count
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end
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-- Restores all nodes hidden with WorldEdit functions in a region defined
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-- by positions `pos1` and `pos2`.
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-- @return The number of nodes restored.
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function worldedit.restore(pos1, pos2)
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local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
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worldedit.keep_loaded(pos1, pos2)
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local nodes = minetest.find_nodes_in_area(pos1, pos2, "worldedit:placeholder")
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local get_node, get_meta, swap_node = minetest.get_node,
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minetest.get_meta, minetest.swap_node
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for _, pos in ipairs(nodes) do
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local node = get_node(pos)
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local meta = get_meta(pos)
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local data = meta:to_table()
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node.name = data.fields.worldedit_placeholder
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data.fields.worldedit_placeholder = nil
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meta:from_table(data)
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swap_node(pos, node)
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end
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return #nodes
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end
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