1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
-- Minetest: builtin/item.lua
--
-- Falling stuff
--
minetest.register_entity("__builtin:falling_node", {
initial_properties = {
physical = true,
collide_with_objects = false,
collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
visual = "wielditem",
textures = {},
visual_size = {x=0.667, y=0.667},
},
node = {},
set_node = function(self, node)
self.node = node
local stack = ItemStack(node.name)
local itemtable = stack:to_table()
local itemname = nil
if itemtable then
itemname = stack:to_table().name
end
local item_texture = nil
local item_type = ""
if minetest.registered_items[itemname] then
item_texture = minetest.registered_items[itemname].inventory_image
item_type = minetest.registered_items[itemname].type
end
prop = {
is_visible = true,
textures = {node.name},
}
self.object:set_properties(prop)
end,
get_staticdata = function(self)
return self.node.name
end,
on_activate = function(self, staticdata)
self.object:set_armor_groups({immortal=1})
--self.object:setacceleration({x=0, y=-10, z=0})
self:set_node({name=staticdata})
end,
on_step = function(self, dtime)
-- Set gravity
self.object:setacceleration({x=0, y=-10, z=0})
-- Turn to actual sand when collides to ground or just move
local pos = self.object:getpos()
local bcp = {x=pos.x, y=pos.y-0.7, z=pos.z} -- Position of bottom center point
local bcn = minetest.get_node(bcp)
local bcd = minetest.registered_nodes[bcn.name]
-- Note: walkable is in the node definition, not in item groups
if not bcd or
(bcd.walkable or
(minetest.get_node_group(self.node.name, "float") ~= 0 and
bcd.liquidtype ~= "none")) then
if bcd and bcd.leveled and
bcn.name == self.node.name then
local addlevel = self.node.level
if addlevel == nil or addlevel <= 0 then
addlevel = bcd.leveled
end
if minetest.add_node_level(bcp, addlevel) == 0 then
self.object:remove()
return
end
elseif bcd and bcd.buildable_to and
(minetest.get_node_group(self.node.name, "float") == 0 or
bcd.liquidtype == "none") then
minetest.remove_node(bcp)
return
end
local np = {x=bcp.x, y=bcp.y+1, z=bcp.z}
-- Check what's here
local n2 = minetest.get_node(np)
-- If it's not air or liquid, remove node and replace it with
-- it's drops
if n2.name ~= "air" and (not minetest.registered_nodes[n2.name] or
minetest.registered_nodes[n2.name].liquidtype == "none") then
local drops = minetest.get_node_drops(n2.name, "")
minetest.remove_node(np)
-- Add dropped items
local _, dropped_item
for _, dropped_item in ipairs(drops) do
minetest.add_item(np, dropped_item)
end
-- Run script hook
local _, callback
for _, callback in ipairs(minetest.registered_on_dignodes) do
callback(np, n2, nil)
end
end
-- Create node and remove entity
minetest.add_node(np, self.node)
self.object:remove()
nodeupdate(np)
else
-- Do nothing
end
end
})
function spawn_falling_node(p, node)
obj = minetest.add_entity(p, "__builtin:falling_node")
obj:get_luaentity():set_node(node)
end
function drop_attached_node(p)
local nn = minetest.get_node(p).name
minetest.remove_node(p)
for _,item in ipairs(minetest.get_node_drops(nn, "")) do
local pos = {
x = p.x + math.random()/2 - 0.25,
y = p.y + math.random()/2 - 0.25,
z = p.z + math.random()/2 - 0.25,
}
minetest.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.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
--
function nodeupdate_single(p, delay)
n = minetest.get_node(p)
if minetest.get_node_group(n.name, "falling_node") ~= 0 then
p_bottom = {x=p.x, y=p.y-1, z=p.z}
n_bottom = minetest.get_node(p_bottom)
-- Note: walkable is in the node definition, not in item groups
if minetest.registered_nodes[n_bottom.name] and
(minetest.get_node_group(n.name, "float") == 0 or minetest.registered_nodes[n_bottom.name].liquidtype == "none") and
(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
(not minetest.registered_nodes[n_bottom.name].walkable or
minetest.registered_nodes[n_bottom.name].buildable_to) then
if delay then
minetest.after(0.1, nodeupdate_single, {x=p.x, y=p.y, z=p.z}, false)
else
n.level = minetest.env:get_node_level(p)
minetest.remove_node(p)
spawn_falling_node(p, n)
nodeupdate(p)
end
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, delay)
-- Round p to prevent falling entities to get stuck
p.x = math.floor(p.x+0.5)
p.y = math.floor(p.y+0.5)
p.z = math.floor(p.z+0.5)
for x = -1,1 do
for y = -1,1 do
for z = -1,1 do
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))
end
end
end
end
--
-- Global callbacks
--
function on_placenode(p, node)
nodeupdate(p)
end
minetest.register_on_placenode(on_placenode)
function on_dignode(p, node)
nodeupdate(p)
end
minetest.register_on_dignode(on_dignode)
|
