1 -- Minetest: builtin/item.lua
7 minetest.register_entity("__builtin:falling_node", {
10 collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
13 visual_size = {x=0.667, y=0.667},
18 set_node = function(self, nodename)
19 self.nodename = nodename
20 local stack = ItemStack(nodename)
21 local itemtable = stack:to_table()
24 itemname = stack:to_table().name
26 local item_texture = nil
28 if minetest.registered_items[itemname] then
29 item_texture = minetest.registered_items[itemname].inventory_image
30 item_type = minetest.registered_items[itemname].type
34 textures = {nodename},
36 self.object:set_properties(prop)
39 get_staticdata = function(self)
43 on_activate = function(self, staticdata)
44 self.nodename = staticdata
45 self.object:set_armor_groups({immortal=1})
46 --self.object:setacceleration({x=0, y=-10, z=0})
47 self:set_node(self.nodename)
50 on_step = function(self, dtime)
52 self.object:setacceleration({x=0, y=-10, z=0})
53 -- Turn to actual sand when collides to ground or just move
54 local pos = self.object:getpos()
55 local bcp = {x=pos.x, y=pos.y-0.7, z=pos.z} -- Position of bottom center point
56 local bcn = minetest.env:get_node(bcp)
57 -- Note: walkable is in the node definition, not in item groups
58 if minetest.registered_nodes[bcn.name] and
59 minetest.registered_nodes[bcn.name].walkable then
60 if minetest.registered_nodes[bcn.name].buildable_to then
61 minetest.env:remove_node(bcp)
64 local np = {x=bcp.x, y=bcp.y+1, z=bcp.z}
66 local n2 = minetest.env:get_node(np)
67 -- If it's not air or liquid, remove node and replace it with
69 if n2.name ~= "air" and (not minetest.registered_nodes[n2.name] or
70 minetest.registered_nodes[n2.name].liquidtype == "none") then
71 local drops = minetest.get_node_drops(n2.name, "")
72 minetest.env:remove_node(np)
75 for _, dropped_item in ipairs(drops) do
76 minetest.env:add_item(np, dropped_item)
80 for _, callback in ipairs(minetest.registered_on_dignodes) do
84 -- Create node and remove entity
85 minetest.env:add_node(np, {name=self.nodename})
94 function spawn_falling_node(p, nodename)
95 obj = minetest.env:add_entity(p, "__builtin:falling_node")
96 obj:get_luaentity():set_node(nodename)
99 function drop_attached_node(p)
100 local nn = minetest.env:get_node(p).name
101 minetest.env:remove_node(p)
102 for _,item in ipairs(minetest.get_node_drops(nn, "")) do
104 x = p.x + math.random()/2 - 0.25,
105 y = p.y + math.random()/2 - 0.25,
106 z = p.z + math.random()/2 - 0.25,
108 minetest.env:add_item(pos, item)
112 function check_attached_node(p, n)
113 local def = minetest.registered_nodes[n.name]
114 local d = {x=0, y=0, z=0}
115 if def.paramtype2 == "wallmounted" then
116 if n.param2 == 0 then
118 elseif n.param2 == 1 then
120 elseif n.param2 == 2 then
122 elseif n.param2 == 3 then
124 elseif n.param2 == 4 then
126 elseif n.param2 == 5 then
132 local p2 = {x=p.x+d.x, y=p.y+d.y, z=p.z+d.z}
133 local nn = minetest.env:get_node(p2).name
134 local def2 = minetest.registered_nodes[nn]
135 if def2 and not def2.walkable then
142 -- Some common functions
145 function nodeupdate_single(p)
146 n = minetest.env:get_node(p)
147 if minetest.get_node_group(n.name, "falling_node") ~= 0 then
148 p_bottom = {x=p.x, y=p.y-1, z=p.z}
149 n_bottom = minetest.env:get_node(p_bottom)
150 -- Note: walkable is in the node definition, not in item groups
151 if minetest.registered_nodes[n_bottom.name] and
152 (not minetest.registered_nodes[n_bottom.name].walkable or
153 minetest.registered_nodes[n_bottom.name].buildable_to) then
154 minetest.env:remove_node(p)
155 spawn_falling_node(p, n.name)
160 if minetest.get_node_group(n.name, "attached_node") ~= 0 then
161 if not check_attached_node(p, n) then
162 drop_attached_node(p)
168 function nodeupdate(p)
169 -- Round p to prevent falling entities to get stuck
170 p.x = math.floor(p.x+0.5)
171 p.y = math.floor(p.y+0.5)
172 p.z = math.floor(p.z+0.5)
177 p2 = {x=p.x+x, y=p.y+y, z=p.z+z}
178 nodeupdate_single(p2)
188 function on_placenode(p, node)
191 minetest.register_on_placenode(on_placenode)
193 function on_dignode(p, node)
196 minetest.register_on_dignode(on_dignode)