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 -- Legacy
  88 --
  89
  90 function default.spawn_falling_node(p, nodename)
  91         spawn_falling_node(p, nodename)
  92 end
  93
  94 -- Horrible crap to support old code
  95 -- Don't use this and never do what this does, it's completely wrong!
  96 -- (More specifically, the client and the C++ code doesn't get the group)
  97 function default.register_falling_node(nodename, texture)
  98         minetest.log("error", debug.traceback())
  99         minetest.log('error', "WARNING: default.register_falling_node is deprecated")
 100         if minetest.registered_nodes[nodename] then
 101                 minetest.registered_nodes[nodename].groups.falling_node = 1
 102         end
 103 end
 104
 105 --
 106 -- Global callbacks
 107 --
 108
 109 -- Global environment step function
 110 function on_step(dtime)
 111         -- print("on_step")
 112 end
 113 minetest.register_globalstep(on_step)
 114
 115 function on_placenode(p, node)
 116         --print("on_placenode")
 117 end
 118 minetest.register_on_placenode(on_placenode)
 119
 120 function on_dignode(p, node)
 121         --print("on_dignode")
 122 end
 123 minetest.register_on_dignode(on_dignode)
 124
 125 function on_punchnode(p, node)
 126 end
 127 minetest.register_on_punchnode(on_punchnode)
 128
 129
 130 --
 131 -- Lavacooling
 132 --
 133
 134 default.cool_lava_source = function(pos)
 135         minetest.set_node(pos, {name="default:obsidian"})
 136         minetest.sound_play("default_cool_lava", {pos = pos,  gain = 0.25})
 137 end
 138
 139 default.cool_lava_flowing = function(pos)
 140         minetest.set_node(pos, {name="default:stone"})
 141         minetest.sound_play("default_cool_lava", {pos = pos,  gain = 0.25})
 142 end
 143
 144 minetest.register_abm({
 145         nodenames = {"default:lava_flowing"},
 146         neighbors = {"group:water"},
 147         interval = 1,
 148         chance = 1,
 149         action = function(pos, node, active_object_count, active_object_count_wider)
 150                 default.cool_lava_flowing(pos, node, active_object_count, active_object_count_wider)
 151         end,
 152 })
 153
 154 minetest.register_abm({
 155         nodenames = {"default:lava_source"},
 156         neighbors = {"group:water"},
 157         interval = 1,
 158         chance = 1,
 159         action = function(pos, node, active_object_count, active_object_count_wider)
 160                 default.cool_lava_source(pos, node, active_object_count, active_object_count_wider)
 161         end,
 162 })
 163
 164 --
 165 -- Papyrus and cactus growing
 166 --
 167
 168 minetest.register_abm({
 169         nodenames = {"default:cactus"},
 170         neighbors = {"group:sand"},
 171         interval = 50,
 172         chance = 20,
 173         action = function(pos, node)
 174                 pos.y = pos.y-1
 175                 local name = minetest.get_node(pos).name
 176                 if minetest.get_item_group(name, "sand") ~= 0 then
 177                         pos.y = pos.y+1
 178                         local height = 0
 179                         while minetest.get_node(pos).name == "default:cactus" and height < 4 do
 180                                 height = height+1
 181                                 pos.y = pos.y+1
 182                         end
 183                         if height < 4 then
 184                                 if minetest.get_node(pos).name == "air" then
 185                                         minetest.set_node(pos, {name="default:cactus"})
 186                                 end
 187                         end
 188                 end
 189         end,
 190 })
 191
 192 minetest.register_abm({
 193         nodenames = {"default:papyrus"},
 194         neighbors = {"default:dirt", "default:dirt_with_grass"},
 195         interval = 50,
 196         chance = 20,
 197         action = function(pos, node)
 198                 pos.y = pos.y-1
 199                 local name = minetest.get_node(pos).name
 200                 if name == "default:dirt" or name == "default:dirt_with_grass" then
 201                         if minetest.find_node_near(pos, 3, {"group:water"}) == nil then
 202                                 return
 203                         end
 204                         pos.y = pos.y+1
 205                         local height = 0
 206                         while minetest.get_node(pos).name == "default:papyrus" and height < 4 do
 207                                 height = height+1
 208                                 pos.y = pos.y+1
 209                         end
 210                         if height < 4 then
 211                                 if minetest.get_node(pos).name == "air" then
 212                                         minetest.set_node(pos, {name="default:papyrus"})
 213                                 end
 214                         end
 215                 end
 216         end,
 217 })
 218
 219 --
 220 -- dig upwards
 221 --
 222
 223 function default.dig_up(pos, node, digger)
 224         if digger == nil then return end
 225         local np = {x = pos.x, y = pos.y + 1, z = pos.z}
 226         local nn = minetest.get_node(np)
 227         if nn.name == node.name then
 228                 minetest.node_dig(np, nn, digger)
 229         end
 230 end
 231
 232 --
 233 -- Leafdecay
 234 --
 235
 236 default.leafdecay_trunk_cache = {}
 237 default.leafdecay_enable_cache = true
 238 -- Spread the load of finding trunks
 239 default.leafdecay_trunk_find_allow_accumulator = 0
 240
 241 minetest.register_globalstep(function(dtime)
 242         local finds_per_second = 5000
 243         default.leafdecay_trunk_find_allow_accumulator =
 244                         math.floor(dtime * finds_per_second)
 245 end)
 246
 247 minetest.register_abm({
 248         nodenames = {"group:leafdecay"},
 249         neighbors = {"air", "group:liquid"},
 250         -- A low interval and a high inverse chance spreads the load
 251         interval = 2,
 252         chance = 5,
 253
 254         action = function(p0, node, _, _)
 255                 --print("leafdecay ABM at "..p0.x..", "..p0.y..", "..p0.z..")")
 256                 local do_preserve = false
 257                 local d = minetest.registered_nodes[node.name].groups.leafdecay
 258                 if not d or d == 0 then
 259                         --print("not groups.leafdecay")
 260                         return
 261                 end
 262                 local n0 = minetest.get_node(p0)
 263                 if n0.param2 ~= 0 then
 264                         --print("param2 ~= 0")
 265                         return
 266                 end
 267                 local p0_hash = nil
 268                 if default.leafdecay_enable_cache then
 269                         p0_hash = minetest.hash_node_position(p0)
 270                         local trunkp = default.leafdecay_trunk_cache[p0_hash]
 271                         if trunkp then
 272                                 local n = minetest.get_node(trunkp)
 273                                 local reg = minetest.registered_nodes[n.name]
 274                                 -- Assume ignore is a trunk, to make the thing work at the border of the active area
 275                                 if n.name == "ignore" or (reg and reg.groups.tree and reg.groups.tree ~= 0) then
 276                                         --print("cached trunk still exists")
 277                                         return
 278                                 end
 279                                 --print("cached trunk is invalid")
 280                                 -- Cache is invalid
 281                                 table.remove(default.leafdecay_trunk_cache, p0_hash)
 282                         end
 283                 end
 284                 if default.leafdecay_trunk_find_allow_accumulator <= 0 then
 285                         return
 286                 end
 287                 default.leafdecay_trunk_find_allow_accumulator =
 288                                 default.leafdecay_trunk_find_allow_accumulator - 1
 289                 -- Assume ignore is a trunk, to make the thing work at the border of the active area
 290                 local p1 = minetest.find_node_near(p0, d, {"ignore", "group:tree"})
 291                 if p1 then
 292                         do_preserve = true
 293                         if default.leafdecay_enable_cache then
 294                                 --print("caching trunk")
 295                                 -- Cache the trunk
 296                                 default.leafdecay_trunk_cache[p0_hash] = p1
 297                         end
 298                 end
 299                 if not do_preserve then
 300                         -- Drop stuff other than the node itself
 301                         local itemstacks = minetest.get_node_drops(n0.name)
 302                         for _, itemname in ipairs(itemstacks) do
 303                                 if minetest.get_item_group(n0.name, "leafdecay_drop") ~= 0 or
 304                                                 itemname ~= n0.name then
 305                                         local p_drop = {
 306                                                 x = p0.x - 0.5 + math.random(),
 307                                                 y = p0.y - 0.5 + math.random(),
 308                                                 z = p0.z - 0.5 + math.random(),
 309                                         }
 310                                         minetest.add_item(p_drop, itemname)
 311                                 end
 312                         end
 313                         -- Remove node
 314                         minetest.remove_node(p0)
 315                         nodeupdate(p0)
 316                 end
 317         end
 318 })
 319