diff options
Diffstat (limited to 'worldedit/visualization.lua')
| -rw-r--r-- | worldedit/visualization.lua | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/worldedit/visualization.lua b/worldedit/visualization.lua new file mode 100644 index 0000000..5ac49f3 --- /dev/null +++ b/worldedit/visualization.lua @@ -0,0 +1,131 @@ +--- Functions for visibly hiding nodes
+-- @module worldedit.visualization
+
+minetest.register_node("worldedit:placeholder", {
+ drawtype = "airlike",
+ paramtype = "light",
+ sunlight_propagates = true,
+ diggable = false,
+ walkable = false,
+ groups = {not_in_creative_inventory=1},
+})
+
+--- Hides all nodes in a region defined by positions `pos1` and `pos2` by
+-- non-destructively replacing them with invisible nodes.
+-- @return The number of nodes hidden.
+function worldedit.hide(pos1, pos2)
+ pos1, pos2 = worldedit.sort_pos(pos1, pos2)
+
+ worldedit.keep_loaded(pos1, pos2)
+
+ local pos = {x=pos1.x, y=0, z=0}
+ local get_node, get_meta, swap_node = minetest.get_node,
+ minetest.get_meta, minetest.swap_node
+ while pos.x <= pos2.x do
+ pos.y = pos1.y
+ while pos.y <= pos2.y do
+ pos.z = pos1.z
+ while pos.z <= pos2.z do
+ local node = get_node(pos)
+ if node.name ~= "air" and node.name ~= "worldedit:placeholder" then
+ -- Save the node's original name
+ get_meta(pos):set_string("worldedit_placeholder", node.name)
+ -- Swap in placeholder node
+ node.name = "worldedit:placeholder"
+ swap_node(pos, node)
+ end
+ pos.z = pos.z + 1
+ end
+ pos.y = pos.y + 1
+ end
+ pos.x = pos.x + 1
+ end
+ return worldedit.volume(pos1, pos2)
+end
+
+--- Suppresses all instances of `node_name` in a region defined by positions
+-- `pos1` and `pos2` by non-destructively replacing them with invisible nodes.
+-- @return The number of nodes suppressed.
+function worldedit.suppress(pos1, pos2, node_name)
+ -- Ignore placeholder supression
+ if node_name == "worldedit:placeholder" then
+ return 0
+ end
+
+ pos1, pos2 = worldedit.sort_pos(pos1, pos2)
+
+ worldedit.keep_loaded(pos1, pos2)
+
+ local nodes = minetest.find_nodes_in_area(pos1, pos2, node_name)
+ local get_node, get_meta, swap_node = minetest.get_node,
+ minetest.get_meta, minetest.swap_node
+ for _, pos in ipairs(nodes) do
+ local node = get_node(pos)
+ -- Save the node's original name
+ get_meta(pos):set_string("worldedit_placeholder", node.name)
+ -- Swap in placeholder node
+ node.name = "worldedit:placeholder"
+ swap_node(pos, node)
+ end
+ return #nodes
+end
+
+--- Highlights all instances of `node_name` in a region defined by positions
+-- `pos1` and `pos2` by non-destructively hiding all other nodes.
+-- @return The number of nodes found.
+function worldedit.highlight(pos1, pos2, node_name)
+ pos1, pos2 = worldedit.sort_pos(pos1, pos2)
+
+ worldedit.keep_loaded(pos1, pos2)
+
+ local pos = {x=pos1.x, y=0, z=0}
+ local get_node, get_meta, swap_node = minetest.get_node,
+ minetest.get_meta, minetest.swap_node
+ local count = 0
+ while pos.x <= pos2.x do
+ pos.y = pos1.y
+ while pos.y <= pos2.y do
+ pos.z = pos1.z
+ while pos.z <= pos2.z do
+ local node = get_node(pos)
+ if node.name == node_name then -- Node found
+ count = count + 1
+ elseif node.name ~= "worldedit:placeholder" then -- Hide other nodes
+ -- Save the node's original name
+ get_meta(pos):set_string("worldedit_placeholder", node.name)
+ -- Swap in placeholder node
+ node.name = "worldedit:placeholder"
+ swap_node(pos, node)
+ end
+ pos.z = pos.z + 1
+ end
+ pos.y = pos.y + 1
+ end
+ pos.x = pos.x + 1
+ end
+ return count
+end
+
+-- Restores all nodes hidden with WorldEdit functions in a region defined
+-- by positions `pos1` and `pos2`.
+-- @return The number of nodes restored.
+function worldedit.restore(pos1, pos2)
+ local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
+
+ worldedit.keep_loaded(pos1, pos2)
+
+ local nodes = minetest.find_nodes_in_area(pos1, pos2, "worldedit:placeholder")
+ local get_node, get_meta, swap_node = minetest.get_node,
+ minetest.get_meta, minetest.swap_node
+ for _, pos in ipairs(nodes) do
+ local node = get_node(pos)
+ local meta = get_meta(pos)
+ local data = meta:to_table()
+ node.name = data.fields.worldedit_placeholder
+ data.fields.worldedit_placeholder = nil
+ meta:from_table(data)
+ swap_node(pos, node)
+ end
+ return #nodes
+end
+
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