1 -- Minetest: builtin/item.lua
7 minetest.register_entity("__builtin:falling_node", {
10 collide_with_objects = false,
11 collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
14 visual_size = {x=0.667, y=0.667},
19 set_node = function(self, nodename)
20 self.nodename = nodename
21 local stack = ItemStack(nodename)
22 local itemtable = stack:to_table()
25 itemname = stack:to_table().name
27 local item_texture = nil
29 if minetest.registered_items[itemname] then
30 item_texture = minetest.registered_items[itemname].inventory_image
31 item_type = minetest.registered_items[itemname].type
35 textures = {nodename},
37 self.object:set_properties(prop)
40 get_staticdata = function(self)
44 on_activate = function(self, staticdata)
45 self.nodename = staticdata
46 self.object:set_armor_groups({immortal=1})
47 --self.object:setacceleration({x=0, y=-10, z=0})
48 self:set_node(self.nodename)
51 on_step = function(self, dtime)
53 self.object:setacceleration({x=0, y=-10, z=0})
54 -- Turn to actual sand when collides to ground or just move
55 local pos = self.object:getpos()
56 local bcp = {x=pos.x, y=pos.y-0.7, z=pos.z} -- Position of bottom center point
57 local bcn = minetest.get_node(bcp)
58 -- Note: walkable is in the node definition, not in item groups
59 if minetest.registered_nodes[bcn.name] and
60 minetest.registered_nodes[bcn.name].walkable then
61 if minetest.registered_nodes[bcn.name].buildable_to then
62 minetest.remove_node(bcp)
65 local np = {x=bcp.x, y=bcp.y+1, z=bcp.z}
67 local n2 = minetest.get_node(np)
68 -- If it's not air or liquid, remove node and replace it with
70 if n2.name ~= "air" and (not minetest.registered_nodes[n2.name] or
71 minetest.registered_nodes[n2.name].liquidtype == "none") then
72 local drops = minetest.get_node_drops(n2.name, "")
73 minetest.remove_node(np)
76 for _, dropped_item in ipairs(drops) do
77 minetest.add_item(np, dropped_item)
81 for _, callback in ipairs(minetest.registered_on_dignodes) do
85 -- Create node and remove entity
86 minetest.add_node(np, {name=self.nodename})
95 function spawn_falling_node(p, nodename)
96 obj = minetest.add_entity(p, "__builtin:falling_node")
97 obj:get_luaentity():set_node(nodename)
100 function drop_attached_node(p)
101 local nn = minetest.get_node(p).name
102 minetest.remove_node(p)
103 for _,item in ipairs(minetest.get_node_drops(nn, "")) do
105 x = p.x + math.random()/2 - 0.25,
106 y = p.y + math.random()/2 - 0.25,
107 z = p.z + math.random()/2 - 0.25,
109 minetest.add_item(pos, item)
113 function check_attached_node(p, n)
114 local def = minetest.registered_nodes[n.name]
115 local d = {x=0, y=0, z=0}
116 if def.paramtype2 == "wallmounted" then
117 if n.param2 == 0 then
119 elseif n.param2 == 1 then
121 elseif n.param2 == 2 then
123 elseif n.param2 == 3 then
125 elseif n.param2 == 4 then
127 elseif n.param2 == 5 then
133 local p2 = {x=p.x+d.x, y=p.y+d.y, z=p.z+d.z}
134 local nn = minetest.get_node(p2).name
135 local def2 = minetest.registered_nodes[nn]
136 if def2 and not def2.walkable then
143 -- Some common functions
146 function nodeupdate_single(p, delay)
147 n = minetest.get_node(p)
148 if minetest.get_node_group(n.name, "falling_node") ~= 0 then
149 p_bottom = {x=p.x, y=p.y-1, z=p.z}
150 n_bottom = minetest.get_node(p_bottom)
151 -- Note: walkable is in the node definition, not in item groups
152 if minetest.registered_nodes[n_bottom.name] and
153 (not minetest.registered_nodes[n_bottom.name].walkable or
154 minetest.registered_nodes[n_bottom.name].buildable_to) then
156 minetest.after(0.1, nodeupdate_single, {x=p.x, y=p.y, z=p.z}, false)
158 minetest.remove_node(p)
159 spawn_falling_node(p, n.name)
165 if minetest.get_node_group(n.name, "attached_node") ~= 0 then
166 if not check_attached_node(p, n) then
167 drop_attached_node(p)
173 function nodeupdate(p)
174 -- Round p to prevent falling entities to get stuck
175 p.x = math.floor(p.x+0.5)
176 p.y = math.floor(p.y+0.5)
177 p.z = math.floor(p.z+0.5)
182 nodeupdate_single({x=p.x+x, y=p.y+y, z=p.z+z}, not (x==0 and y==0 and z==0))
192 function on_placenode(p, node)
195 minetest.register_on_placenode(on_placenode)
197 function on_dignode(p, node)
200 minetest.register_on_dignode(on_dignode)