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add placeholders as not-buildable_to nodes, that can be set to prevent other nodes to build or expanded into expansions

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this fixes #292
This commit is contained in:
Tim
2015-09-08 09:24:01 +02:00
parent 26a874d919
commit fb1b620316
2 changed files with 27 additions and 4 deletions
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21
homedecor/handlers/expansion.lua
View File

@@ -23,6 +23,19 @@ homedecor.fdir_to_fwd = {
{ -1, 0 },
}
local placeholder_node = "homedecor:expansion_placeholder"
minetest.register_node(placeholder_node, {
description = "Expansion placeholder (you hacker you!)",
groups = { not_in_creative_inventory=1 },
drawtype = "airlike",
paramtype = "light",
walkable = false,
selection_box = { type = "fixed", fixed = { 0, 0, 0, 0, 0, 0 } },
is_ground_content = false,
sunlight_propagates = true,
buildable_to = false,
})
-- selects which node was pointed at based on it being known, and either clickable or buildable_to
local function select_node(pointed_thing)
local pos = pointed_thing.under
@@ -52,7 +65,13 @@ local function stack(itemstack, placer, fdir, pos, def, pos2, node1, node2)
local fdir = fdir or minetest.dir_to_facedir(placer:get_look_dir())
minetest.set_node(pos, { name = node1, param2 = fdir })
node2 = node2 or "air" -- this can be used to clear buildable_to nodes even though we are using a multinode mesh
minetest.set_node(pos2, { name = node2, param2 = (node2 ~= "air" and fdir) or nil })
-- do not assume by default, as we still might want to allow overlapping in some cases
local has_facedir = node2 ~= "air"
if node2 == "placeholder" then
has_facedir = false
node2 = placeholder_node
end
minetest.set_node(pos2, { name = node2, param2 = (has_facedir and fdir) or nil })
-- call after_place_node of the placed node if available
local ctrl_node_def = minetest.registered_nodes[node1]

10
homedecor/handlers/registration.lua
View File

@@ -1,5 +1,6 @@
homedecor = homedecor or {}
local S = homedecor.gettext
local placeholder_node = "homedecor:expansion_placeholder"
--wrapper around minetest.register_node that sets sane defaults and interprets some specialized settings
function homedecor.register(name, original_def)
@@ -59,7 +60,8 @@ function homedecor.register(name, original_def)
def.after_dig_node = def.after_dig_node or function(pos, oldnode, oldmetadata, digger)
if expand.top and expand.forward ~= "air" then
local top_pos = { x=pos.x, y=pos.y+1, z=pos.z }
if minetest.get_node(top_pos).name == expand.top then
local node = minetest.get_node(top_pos).name
if node == expand.top or node == placeholder_node then
minetest.remove_node(top_pos)
end
end
@@ -69,13 +71,15 @@ function homedecor.register(name, original_def)
if expand.right and expand.forward ~= "air" then
local right_pos = { x=pos.x+homedecor.fdir_to_right[fdir+1][1], y=pos.y, z=pos.z+homedecor.fdir_to_right[fdir+1][2] }
if minetest.get_node(right_pos).name == expand.right then
local node = minetest.get_node(right_pos).name
if node == expand.right or node == placeholder_node then
minetest.remove_node(right_pos)
end
end
if expand.forward and expand.forward ~= "air" then
local forward_pos = { x=pos.x+homedecor.fdir_to_fwd[fdir+1][1], y=pos.y, z=pos.z+homedecor.fdir_to_fwd[fdir+1][2] }
if minetest.get_node(forward_pos).name == expand.forward then
local node = minetest.get_node(forward_pos).name
if node == expand.forward or node == placeholder_node then
minetest.remove_node(forward_pos)
end
end