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https://git.minetest.land/VoxeLibre/VoxeLibre.git
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64 lines
3 KiB
Lua
64 lines
3 KiB
Lua
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--- fairly strict: air, ignore, or no_paths marker
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-- @param node string or Node: node or node name
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-- @return true for air and ignore nodes
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function vl_terraforming._is_air(node)
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local name = node.name or node
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return name == "air" or name == "ignore" or name == "mcl_villages:no_paths"
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end
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--- check if a node is walkable (solid), but not tree/leaves/fungi/bamboo/vines/etc.
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-- @param node LUA node or node name
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-- @return truthy when solid but not tree/decoration/fungi
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function vl_terraforming._is_solid_not_tree(node)
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local name = node.name or node
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if name == "air" or name == "ignore" or name == "mcl_villages:no_paths" or name == "mcl_core:bedrock" then return false end
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if name == "mcl_nether:soul_sand" then return true end -- not "solid". Other exceptions we need?
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if name == "mcl_nether:nether_wart_block" then return false end -- crimson forest, treat as tree
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-- is deco_block if name == "mcl_crimson:warped_wart_block" then return false end -- warped forest, treat as tree
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-- is deco_block if name == "mcl_crimson:shroomlight" then return false end -- crimson forest, treat as tree
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-- is deco_block if name == "mcl_core:snow" then return false end
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-- is walkable if name == "mcl_core:snowblock" then return true end
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local meta = minetest.registered_items[name]
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local groups = meta and meta.groups
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return meta and meta.walkable and not (groups and (groups.deco_block or groups.tree or groups.leaves or groups.plant))
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end
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local is_solid_not_tree = vl_terraforming._is_solid_not_tree
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--- check if a node is tree
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-- @param node string or Node: node or node name
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-- @return true for tree, leaves
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function vl_terraforming._is_tree_not_leaves(node)
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local name = node.name or node
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if name == "air" or name == "ignore" or name == "mcl_villages:no_paths" then return false end
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-- if name == "mcl_nether:nether_wart_block" then return true end -- crimson forest, treat as tree
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-- if name == "mcl_crimson:warped_wart_block" then return true end -- warped forest, treat as tree
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-- if name == "mcl_crimson:shroomlight" then return true end -- crimson forest, treat as tree
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local meta = minetest.registered_items[name]
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return meta and meta.groups and meta.groups.tree
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end
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--- check if a node is liquid
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-- @param node string or Node: node or node name
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-- @return true for water, lava
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function vl_terraforming._is_liquid(node)
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local name = node.name or node
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if name == "air" or name == "ignore" or name == "mcl_villages:no_paths" then return false end
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local meta = minetest.registered_items[name]
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local groups = meta and meta.groups
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return groups and groups.liquid
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end
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--- replace a non-solid node, optionally also "additional"
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-- @param vm voxelmanip
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-- @param pos position
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-- @param with replacement Lua node (not just name)
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-- @param always additional node to awlays replace even when solid
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function vl_terraforming._make_solid_vm(vm, pos, with, always)
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local cur = vm:get_node_at(pos)
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if cur.name == "ignore" or cur.name == "mcl_core:bedrock" then return end
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if cur.name == always or not is_solid_not_tree(cur) then
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vm:set_node_at(pos, with)
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return true
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end
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end
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