mods/default/functions.lua

   1 -- mods/default/functions.lua
   2
   3 --
   4 -- Sounds
   5 --
   6
   7 function default.node_sound_defaults(table)
   8         table = table or {}
   9         table.footstep = table.footstep or
  10                         {name="", gain=1.0}
  11         table.dug = table.dug or
  12                         {name="default_dug_node", gain=0.25}
  13         table.place = table.place or
  14                         {name="default_place_node_hard", gain=1.0}
  15         return table
  16 end
  17
  18 function default.node_sound_stone_defaults(table)
  19         table = table or {}
  20         table.footstep = table.footstep or
  21                         {name="default_hard_footstep", gain=0.5}
  22         table.dug = table.dug or
  23                         {name="default_hard_footstep", gain=1.0}
  24         default.node_sound_defaults(table)
  25         return table
  26 end
  27
  28 function default.node_sound_dirt_defaults(table)
  29         table = table or {}
  30         table.footstep = table.footstep or
  31                         {name="default_dirt_footstep", gain=1.0}
  32         table.dug = table.dug or
  33                         {name="default_dirt_footstep", gain=1.5}
  34         table.place = table.place or
  35                         {name="default_place_node", gain=1.0}
  36         default.node_sound_defaults(table)
  37         return table
  38 end
  39
  40 function default.node_sound_sand_defaults(table)
  41         table = table or {}
  42         table.footstep = table.footstep or
  43                         {name="default_sand_footstep", gain=0.2}
  44         table.dug = table.dug or
  45                         {name="default_sand_footstep", gain=0.4}
  46         table.place = table.place or
  47                         {name="default_place_node", gain=1.0}
  48         default.node_sound_defaults(table)
  49         return table
  50 end
  51
  52 function default.node_sound_wood_defaults(table)
  53         table = table or {}
  54         table.footstep = table.footstep or
  55                         {name="default_wood_footstep", gain=0.5}
  56         table.dug = table.dug or
  57                         {name="default_wood_footstep", gain=1.0}
  58         default.node_sound_defaults(table)
  59         return table
  60 end
  61
  62 function default.node_sound_leaves_defaults(table)
  63         table = table or {}
  64         table.footstep = table.footstep or
  65                         {name="default_grass_footstep", gain=0.35}
  66         table.dug = table.dug or
  67                         {name="default_grass_footstep", gain=0.7}
  68         table.dig = table.dig or
  69                         {name="default_dig_crumbly", gain=0.4}
  70         table.place = table.place or
  71                         {name="default_place_node", gain=1.0}
  72         default.node_sound_defaults(table)
  73         return table
  74 end
  75
  76 function default.node_sound_glass_defaults(table)
  77         table = table or {}
  78         table.footstep = table.footstep or
  79                         {name="default_glass_footstep", gain=0.5}
  80         table.dug = table.dug or
  81                         {name="default_break_glass", gain=1.0}
  82         default.node_sound_defaults(table)
  83         return table
  84 end
  85
  86
  87 --
  88 -- Lavacooling
  89 --
  90
  91 default.cool_lava_source = function(pos)
  92         minetest.set_node(pos, {name="default:obsidian"})
  93         minetest.sound_play("default_cool_lava", {pos = pos,  gain = 0.25})
  94 end
  95
  96 default.cool_lava_flowing = function(pos)
  97         minetest.set_node(pos, {name="default:stone"})
  98         minetest.sound_play("default_cool_lava", {pos = pos,  gain = 0.25})
  99 end
 100
 101 minetest.register_abm({
 102         nodenames = {"default:lava_flowing"},
 103         neighbors = {"group:water"},
 104         interval = 1,
 105         chance = 1,
 106         action = function(...)
 107                 default.cool_lava_flowing(...)
 108         end,
 109 })
 110
 111 minetest.register_abm({
 112         nodenames = {"default:lava_source"},
 113         neighbors = {"group:water"},
 114         interval = 1,
 115         chance = 1,
 116         action = function(...)
 117                 default.cool_lava_source(...)
 118         end,
 119 })
 120
 121
 122 --
 123 -- Papyrus and cactus growing
 124 --
 125
 126 function default.grow_cactus(pos, node)
 127         if node.param2 >= 4 then
 128                 return
 129         end
 130         pos.y = pos.y-1
 131         if minetest.get_item_group(minetest.get_node(pos).name, "sand") == 0 then
 132                 return
 133         end
 134         pos.y = pos.y+1
 135         local height = 0
 136         while node.name == "default:cactus" and height < 4 and node.param2 == 0 do
 137                 height = height+1
 138                 pos.y = pos.y+1
 139                 node = minetest.get_node(pos)
 140         end
 141         if height == 4
 142         or node.name ~= "air" then
 143                 return
 144         end
 145         minetest.set_node(pos, {name="default:cactus"})
 146         return true
 147 end
 148
 149 function default.grow_papyrus(pos, node)
 150         pos.y = pos.y-1
 151         local name = minetest.get_node(pos).name
 152         if name ~= "default:dirt_with_grass"
 153         and name ~= "default:dirt" then
 154                 return
 155         end
 156         if not minetest.find_node_near(pos, 3, {"group:water"}) then
 157                 return
 158         end
 159         pos.y = pos.y+1
 160         local height = 0
 161         while node.name == "default:papyrus" and height < 4 do
 162                 height = height+1
 163                 pos.y = pos.y+1
 164                 node = minetest.get_node(pos)
 165         end
 166         if height == 4
 167         or node.name ~= "air" then
 168                 return
 169         end
 170         minetest.set_node(pos, {name="default:papyrus"})
 171         return true
 172 end
 173
 174 -- wrapping the functions in abm action is necessary to make overriding them possible
 175 minetest.register_abm({
 176         nodenames = {"default:cactus"},
 177         neighbors = {"group:sand"},
 178         interval = 50,
 179         chance = 20,
 180         action = function(...)
 181                 default.grow_cactus(...)
 182         end
 183 })
 184
 185 minetest.register_abm({
 186         nodenames = {"default:papyrus"},
 187         neighbors = {"default:dirt", "default:dirt_with_grass"},
 188         interval = 50,
 189         chance = 20,
 190         action = function(...)
 191                 default.grow_papyrus(...)
 192         end
 193 })
 194
 195
 196 --
 197 -- dig upwards
 198 --
 199
 200 function default.dig_up(pos, node, digger)
 201         if digger == nil then return end
 202         local np = {x = pos.x, y = pos.y + 1, z = pos.z}
 203         local nn = minetest.get_node(np)
 204         if nn.name == node.name then
 205                 minetest.node_dig(np, nn, digger)
 206         end
 207 end
 208
 209
 210 --
 211 -- Leafdecay
 212 --
 213
 214 default.leafdecay_trunk_cache = {}
 215 default.leafdecay_enable_cache = true
 216 -- Spread the load of finding trunks
 217 default.leafdecay_trunk_find_allow_accumulator = 0
 218
 219 minetest.register_globalstep(function(dtime)
 220         local finds_per_second = 5000
 221         default.leafdecay_trunk_find_allow_accumulator =
 222                         math.floor(dtime * finds_per_second)
 223 end)
 224
 225 default.after_place_leaves = function(pos, placer, itemstack, pointed_thing)
 226         local node = minetest.get_node(pos)
 227         node.param2 = 1
 228         minetest.set_node(pos, node)
 229 end
 230
 231 minetest.register_abm({
 232         nodenames = {"group:leafdecay"},
 233         neighbors = {"air", "group:liquid"},
 234         -- A low interval and a high inverse chance spreads the load
 235         interval = 2,
 236         chance = 5,
 237
 238         action = function(p0, node, _, _)
 239                 --print("leafdecay ABM at "..p0.x..", "..p0.y..", "..p0.z..")")
 240                 local do_preserve = false
 241                 local d = minetest.registered_nodes[node.name].groups.leafdecay
 242                 if not d or d == 0 then
 243                         --print("not groups.leafdecay")
 244                         return
 245                 end
 246                 local n0 = minetest.get_node(p0)
 247                 if n0.param2 ~= 0 then
 248                         --print("param2 ~= 0")
 249                         return
 250                 end
 251                 local p0_hash = nil
 252                 if default.leafdecay_enable_cache then
 253                         p0_hash = minetest.hash_node_position(p0)
 254                         local trunkp = default.leafdecay_trunk_cache[p0_hash]
 255                         if trunkp then
 256                                 local n = minetest.get_node(trunkp)
 257                                 local reg = minetest.registered_nodes[n.name]
 258                                 -- Assume ignore is a trunk, to make the thing work at the border of the active area
 259                                 if n.name == "ignore" or (reg and reg.groups.tree and reg.groups.tree ~= 0) then
 260                                         --print("cached trunk still exists")
 261                                         return
 262                                 end
 263                                 --print("cached trunk is invalid")
 264                                 -- Cache is invalid
 265                                 table.remove(default.leafdecay_trunk_cache, p0_hash)
 266                         end
 267                 end
 268                 if default.leafdecay_trunk_find_allow_accumulator <= 0 then
 269                         return
 270                 end
 271                 default.leafdecay_trunk_find_allow_accumulator =
 272                                 default.leafdecay_trunk_find_allow_accumulator - 1
 273                 -- Assume ignore is a trunk, to make the thing work at the border of the active area
 274                 local p1 = minetest.find_node_near(p0, d, {"ignore", "group:tree"})
 275                 if p1 then
 276                         do_preserve = true
 277                         if default.leafdecay_enable_cache then
 278                                 --print("caching trunk")
 279                                 -- Cache the trunk
 280                                 default.leafdecay_trunk_cache[p0_hash] = p1
 281                         end
 282                 end
 283                 if not do_preserve then
 284                         -- Drop stuff other than the node itself
 285                         local itemstacks = minetest.get_node_drops(n0.name)
 286                         for _, itemname in ipairs(itemstacks) do
 287                                 if minetest.get_item_group(n0.name, "leafdecay_drop") ~= 0 or
 288                                                 itemname ~= n0.name then
 289                                         local p_drop = {
 290                                                 x = p0.x - 0.5 + math.random(),
 291                                                 y = p0.y - 0.5 + math.random(),
 292                                                 z = p0.z - 0.5 + math.random(),
 293                                         }
 294                                         minetest.add_item(p_drop, itemname)
 295                                 end
 296                         end
 297                         -- Remove node
 298                         minetest.remove_node(p0)
 299                         nodeupdate(p0)
 300                 end
 301         end
 302 })
 303
 304 --
 305 -- Grass growing
 306 --
 307
 308 minetest.register_abm({
 309         nodenames = {"default:dirt"},
 310         interval = 2,
 311         chance = 200,
 312         action = function(pos, node)
 313                 local above = {x=pos.x, y=pos.y+1, z=pos.z}
 314                 local name = minetest.get_node(above).name
 315                 local nodedef = minetest.registered_nodes[name]
 316                 if nodedef and (nodedef.sunlight_propagates or nodedef.paramtype == "light")
 317                                 and nodedef.liquidtype == "none"
 318                                 and (minetest.get_node_light(above) or 0) >= 13 then
 319                         if name == "default:snow" or name == "default:snowblock" then
 320                                 minetest.set_node(pos, {name = "default:dirt_with_snow"})
 321                         else
 322                                 minetest.set_node(pos, {name = "default:dirt_with_grass"})
 323                         end
 324                 end
 325         end
 326 })
 327
 328 minetest.register_abm({
 329         nodenames = {"default:dirt_with_grass"},
 330         interval = 2,
 331         chance = 20,
 332         action = function(pos, node)
 333                 local above = {x=pos.x, y=pos.y+1, z=pos.z}
 334                 local name = minetest.get_node(above).name
 335                 local nodedef = minetest.registered_nodes[name]
 336                 if name ~= "ignore" and nodedef
 337                                 and not ((nodedef.sunlight_propagates or nodedef.paramtype == "light")
 338                                 and nodedef.liquidtype == "none") then
 339                         minetest.set_node(pos, {name = "default:dirt"})
 340                 end
 341         end
 342 })