Add the group attached_node

Nodes in this group will be dropped as items if the node under them or the node in the wallmounted direction is not walkable.
master
PilzAdam 2012-12-01 13:32:32 +01:00
parent bb454b1846
commit fa76057e7f
4 changed files with 63 additions and 4 deletions

View File

@ -91,6 +91,48 @@ function spawn_falling_node(p, nodename)
obj:get_luaentity():set_node(nodename)
end
function drop_attached_node(p)
local nn = minetest.env:get_node(p).name
minetest.env:remove_node(p)
for _,item in ipairs(minetest.get_node_drops(nn, "")) do
local pos = {
x = p.x + math.random(60)/60-0.3,
y = p.y + math.random(60)/60-0.3,
z = p.z + math.random(60)/60-0.3,
}
minetest.env:add_item(pos, item)
end
end
function check_attached_node(p, n)
local def = minetest.registered_nodes[n.name]
local d = {x=0, y=0, z=0}
if def.paramtype2 == "wallmounted" then
if n.param2 == 0 then
d.y = 1
elseif n.param2 == 1 then
d.y = -1
elseif n.param2 == 2 then
d.x = 1
elseif n.param2 == 3 then
d.x = -1
elseif n.param2 == 4 then
d.z = 1
elseif n.param2 == 5 then
d.z = -1
end
else
d.y = -1
end
local p2 = {x=p.x+d.x, y=p.y+d.y, z=p.z+d.z}
local nn = minetest.env:get_node(p2).name
local def2 = minetest.registered_nodes[nn]
if def2 and not def2.walkable then
return false
end
return true
end
--
-- Some common functions
--
@ -108,6 +150,13 @@ function nodeupdate_single(p)
nodeupdate(p)
end
end
if minetest.get_node_group(n.name, "attached_node") ~= 0 then
if not check_attached_node(p, n) then
drop_attached_node(p)
nodeupdate(p)
end
end
end
function nodeupdate(p)

View File

@ -181,6 +181,13 @@ function minetest.item_place_node(itemstack, placer, pointed_thing)
end
end
-- Check if the node is attached and if it can be placed there
if not check_attached_node(place_to, newnode) then
minetest.log("action", "attached node " .. def.name ..
" can not be placed at " .. minetest.pos_to_string(place_to))
return
end
-- Add node and update
minetest.env:add_node(place_to, newnode)

View File

@ -457,6 +457,9 @@ Special groups
- fall_damage_add_percent: damage speed = speed * (1 + value/100)
- bouncy: value is bounce speed in percent
- falling_node: if there is no walkable block under the node it will fall
- attached_node: if the node under it is not a walkable block the node will be
dropped as an item. If the node is wallmounted the
wallmounted direction is checked.
Known damage and digging time defining groups
----------------------------------------------

View File

@ -837,7 +837,7 @@ minetest.register_node("default:junglegrass", {
wield_image = "default_junglegrass.png",
paramtype = "light",
walkable = false,
groups = {snappy=3},
groups = {snappy=3,attached_node=1},
sounds = default.node_sound_leaves_defaults(),
})
@ -1106,7 +1106,7 @@ minetest.register_node("default:torch", {
wall_bottom = {-0.1, -0.5, -0.1, 0.1, -0.5+0.6, 0.1},
wall_side = {-0.5, -0.3, -0.1, -0.5+0.3, 0.3, 0.1},
},
groups = {choppy=2,dig_immediate=3},
groups = {choppy=2,dig_immediate=3,attached_node=1},
legacy_wallmounted = true,
sounds = default.node_sound_defaults(),
})
@ -1127,7 +1127,7 @@ minetest.register_node("default:sign_wall", {
--wall_bottom = <default>
--wall_side = <default>
},
groups = {choppy=2,dig_immediate=2},
groups = {choppy=2,dig_immediate=2,attached_node=1},
legacy_wallmounted = true,
sounds = default.node_sound_defaults(),
on_construct = function(pos)
@ -1495,7 +1495,7 @@ minetest.register_node("default:sapling", {
wield_image = "default_sapling.png",
paramtype = "light",
walkable = false,
groups = {snappy=2,dig_immediate=3},
groups = {snappy=2,dig_immediate=3,attached_node=1},
sounds = default.node_sound_defaults(),
})