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, node)
21 local stack = ItemStack(node.name)
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 = {node.name},
37 self.object:set_properties(prop)
40 get_staticdata = function(self)
44 on_activate = function(self, staticdata)
45 self.object:set_armor_groups({immortal=1})
46 --self.object:setacceleration({x=0, y=-10, z=0})
47 self:set_node({name=staticdata})
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.get_node(bcp)
57 local bcd = minetest.registered_nodes[bcn.name]
58 -- Note: walkable is in the node definition, not in item groups
61 (minetest.get_item_group(self.node.name, "float") ~= 0 and
62 bcd.liquidtype ~= "none")) then
63 if bcd and bcd.leveled and
64 bcn.name == self.node.name then
65 local addlevel = self.node.level
66 if addlevel == nil or addlevel <= 0 then
67 addlevel = bcd.leveled
69 if minetest.add_node_level(bcp, addlevel) == 0 then
73 elseif bcd and bcd.buildable_to and
74 (minetest.get_item_group(self.node.name, "float") == 0 or
75 bcd.liquidtype == "none") then
76 minetest.remove_node(bcp)
79 local np = {x=bcp.x, y=bcp.y+1, z=bcp.z}
81 local n2 = minetest.get_node(np)
82 -- If it's not air or liquid, remove node and replace it with
84 if n2.name ~= "air" and (not minetest.registered_nodes[n2.name] or
85 minetest.registered_nodes[n2.name].liquidtype == "none") then
86 local drops = minetest.get_node_drops(n2.name, "")
87 minetest.remove_node(np)
90 for _, dropped_item in ipairs(drops) do
91 minetest.add_item(np, dropped_item)
95 for _, callback in ipairs(minetest.registered_on_dignodes) do
99 -- Create node and remove entity
100 minetest.add_node(np, self.node)
109 function spawn_falling_node(p, node)
110 obj = minetest.add_entity(p, "__builtin:falling_node")
111 obj:get_luaentity():set_node(node)
114 function drop_attached_node(p)
115 local nn = minetest.get_node(p).name
116 minetest.remove_node(p)
117 for _,item in ipairs(minetest.get_node_drops(nn, "")) do
119 x = p.x + math.random()/2 - 0.25,
120 y = p.y + math.random()/2 - 0.25,
121 z = p.z + math.random()/2 - 0.25,
123 minetest.add_item(pos, item)
127 function check_attached_node(p, n)
128 local def = minetest.registered_nodes[n.name]
129 local d = {x=0, y=0, z=0}
130 if def.paramtype2 == "wallmounted" then
131 if n.param2 == 0 then
133 elseif n.param2 == 1 then
135 elseif n.param2 == 2 then
137 elseif n.param2 == 3 then
139 elseif n.param2 == 4 then
141 elseif n.param2 == 5 then
147 local p2 = {x=p.x+d.x, y=p.y+d.y, z=p.z+d.z}
148 local nn = minetest.get_node(p2).name
149 local def2 = minetest.registered_nodes[nn]
150 if def2 and not def2.walkable then
157 -- Some common functions
160 function nodeupdate_single(p, delay)
161 n = minetest.get_node(p)
162 if minetest.get_item_group(n.name, "falling_node") ~= 0 then
163 p_bottom = {x=p.x, y=p.y-1, z=p.z}
164 n_bottom = minetest.get_node(p_bottom)
165 -- Note: walkable is in the node definition, not in item groups
166 if minetest.registered_nodes[n_bottom.name] and
167 (minetest.get_item_group(n.name, "float") == 0 or minetest.registered_nodes[n_bottom.name].liquidtype == "none") and
168 (n.name ~= n_bottom.name or (minetest.registered_nodes[n_bottom.name].leveled and minetest.env:get_node_level(p_bottom) < minetest.env:get_node_max_level(p_bottom))) and
169 (not minetest.registered_nodes[n_bottom.name].walkable or
170 minetest.registered_nodes[n_bottom.name].buildable_to) then
172 minetest.after(0.1, nodeupdate_single, {x=p.x, y=p.y, z=p.z}, false)
174 n.level = minetest.env:get_node_level(p)
175 minetest.remove_node(p)
176 spawn_falling_node(p, n)
182 if minetest.get_item_group(n.name, "attached_node") ~= 0 then
183 if not check_attached_node(p, n) then
184 drop_attached_node(p)
190 function nodeupdate(p, delay)
191 -- Round p to prevent falling entities to get stuck
192 p.x = math.floor(p.x+0.5)
193 p.y = math.floor(p.y+0.5)
194 p.z = math.floor(p.z+0.5)
199 nodeupdate_single({x=p.x+x, y=p.y+y, z=p.z+z}, delay or not (x==0 and y==0 and z==0))
209 function on_placenode(p, node)
212 minetest.register_on_placenode(on_placenode)
214 function on_dignode(p, node)
217 minetest.register_on_dignode(on_dignode)