2 -- Grow trees from saplings
7 local random = math.random
9 function default.can_grow(pos)
10 local node_under = minetest.get_node_or_nil({x = pos.x, y = pos.y - 1, z = pos.z})
11 if not node_under then
14 local name_under = node_under.name
15 local is_soil = minetest.get_item_group(name_under, "soil")
19 local light_level = minetest.get_node_light(pos)
20 if not light_level or light_level < 13 then
29 minetest.register_abm({
30 nodenames = {"default:sapling", "default:junglesapling",
31 "default:pine_sapling", "default:acacia_sapling"},
34 action = function(pos, node)
35 if not default.can_grow(pos) then
39 local mapgen = minetest.get_mapgen_params().mgname
40 if node.name == "default:sapling" then
41 minetest.log("action", "A sapling grows into a tree at "..
42 minetest.pos_to_string(pos))
43 if mapgen == "v6" then
44 default.grow_tree(pos, random(1, 4) == 1)
46 default.grow_new_apple_tree(pos)
48 elseif node.name == "default:junglesapling" then
49 minetest.log("action", "A jungle sapling grows into a tree at "..
50 minetest.pos_to_string(pos))
51 if mapgen == "v6" then
52 default.grow_jungle_tree(pos)
54 default.grow_new_jungle_tree(pos)
56 elseif node.name == "default:pine_sapling" then
57 minetest.log("action", "A pine sapling grows into a tree at "..
58 minetest.pos_to_string(pos))
59 if mapgen == "v6" then
60 default.grow_pine_tree(pos)
62 default.grow_new_pine_tree(pos)
64 elseif node.name == "default:acacia_sapling" then
65 minetest.log("action", "An acacia sapling grows into a tree at "..
66 minetest.pos_to_string(pos))
67 default.grow_new_acacia_tree(pos)
77 -- Apple tree and jungle tree trunk and leaves function
79 local function add_trunk_and_leaves(data, a, pos, tree_cid, leaves_cid,
80 height, size, iters, is_apple_tree)
81 local x, y, z = pos.x, pos.y, pos.z
82 local c_air = minetest.get_content_id("air")
83 local c_ignore = minetest.get_content_id("ignore")
84 local c_apple = minetest.get_content_id("default:apple")
87 data[a:index(x, y, z)] = tree_cid -- Force-place lowest trunk node to replace sapling
88 for yy = y + 1, y + height - 1 do
89 local vi = a:index(x, yy, z)
90 local node_id = data[vi]
91 if node_id == c_air or node_id == c_ignore or node_id == leaves_cid then
96 -- Force leaves near the trunk
98 for y_dist = -size, 1 do
99 local vi = a:index(x - 1, y + height + y_dist, z + z_dist)
100 for x_dist = -1, 1 do
101 if data[vi] == c_air or data[vi] == c_ignore then
102 if is_apple_tree and random(1, 8) == 1 then
105 data[vi] = leaves_cid
113 -- Randomly add leaves in 2x2x2 clusters.
115 local clust_x = x + random(-size, size - 1)
116 local clust_y = y + height + random(-size, 0)
117 local clust_z = z + random(-size, size - 1)
122 local vi = a:index(clust_x + xi, clust_y + yi, clust_z + zi)
123 if data[vi] == c_air or data[vi] == c_ignore then
124 if is_apple_tree and random(1, 8) == 1 then
127 data[vi] = leaves_cid
139 function default.grow_tree(pos, is_apple_tree, bad)
141 NOTE: Tree-placing code is currently duplicated in the engine
142 and in games that have saplings; both are deprecated but not
146 error("Deprecated use of default.grow_tree")
149 local x, y, z = pos.x, pos.y, pos.z
150 local height = random(4, 5)
151 local c_tree = minetest.get_content_id("default:tree")
152 local c_leaves = minetest.get_content_id("default:leaves")
154 local vm = minetest.get_voxel_manip()
155 local minp, maxp = vm:read_from_map(
156 {x = pos.x - 2, y = pos.y, z = pos.z - 2},
157 {x = pos.x + 2, y = pos.y + height + 1, z = pos.z + 2}
159 local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
160 local data = vm:get_data()
162 add_trunk_and_leaves(data, a, pos, c_tree, c_leaves, height, 2, 8, is_apple_tree)
172 function default.grow_jungle_tree(pos, bad)
174 NOTE: Jungletree-placing code is currently duplicated in the engine
175 and in games that have saplings; both are deprecated but not
179 error("Deprecated use of default.grow_jungle_tree")
182 local x, y, z = pos.x, pos.y, pos.z
183 local height = random(8, 12)
184 local c_air = minetest.get_content_id("air")
185 local c_ignore = minetest.get_content_id("ignore")
186 local c_jungletree = minetest.get_content_id("default:jungletree")
187 local c_jungleleaves = minetest.get_content_id("default:jungleleaves")
189 local vm = minetest.get_voxel_manip()
190 local minp, maxp = vm:read_from_map(
191 {x = pos.x - 3, y = pos.y - 1, z = pos.z - 3},
192 {x = pos.x + 3, y = pos.y + height + 1, z = pos.z + 3}
194 local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
195 local data = vm:get_data()
197 add_trunk_and_leaves(data, a, pos, c_jungletree, c_jungleleaves, height, 3, 30, false)
200 for z_dist = -1, 1 do
201 local vi_1 = a:index(x - 1, y - 1, z + z_dist)
202 local vi_2 = a:index(x - 1, y, z + z_dist)
203 for x_dist = -1, 1 do
204 if random(1, 3) >= 2 then
205 if data[vi_1] == c_air or data[vi_1] == c_ignore then
206 data[vi_1] = c_jungletree
207 elseif data[vi_2] == c_air or data[vi_2] == c_ignore then
208 data[vi_2] = c_jungletree
222 -- Pine tree from mg mapgen mod, design by sfan5, pointy top added by paramat
224 local function add_pine_needles(data, vi, c_air, c_ignore, c_snow, c_pine_needles)
225 local node_id = data[vi]
226 if node_id == c_air or node_id == c_ignore or node_id == c_snow then
227 data[vi] = c_pine_needles
231 local function add_snow(data, vi, c_air, c_ignore, c_snow)
232 local node_id = data[vi]
233 if node_id == c_air or node_id == c_ignore then
238 function default.grow_pine_tree(pos)
239 local x, y, z = pos.x, pos.y, pos.z
240 local maxy = y + random(9, 13) -- Trunk top
242 local c_air = minetest.get_content_id("air")
243 local c_ignore = minetest.get_content_id("ignore")
244 local c_pine_tree = minetest.get_content_id("default:pine_tree")
245 local c_pine_needles = minetest.get_content_id("default:pine_needles")
246 local c_snow = minetest.get_content_id("default:snow")
247 local c_snowblock = minetest.get_content_id("default:snowblock")
248 local c_dirtsnow = minetest.get_content_id("default:dirt_with_snow")
250 local vm = minetest.get_voxel_manip()
251 local minp, maxp = vm:read_from_map(
252 {x = x - 3, y = y - 1, z = z - 3},
253 {x = x + 3, y = maxy + 3, z = z + 3}
255 local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
256 local data = vm:get_data()
258 -- Scan for snow nodes near sapling to enable snow on branches
260 for yy = y - 1, y + 1 do
261 for zz = z - 1, z + 1 do
262 local vi = a:index(x - 1, yy, zz)
263 for xx = x - 1, x + 1 do
264 local nodid = data[vi]
265 if nodid == c_snow or nodid == c_snowblock or nodid == c_dirtsnow then
273 -- Upper branches layer
275 for yy = maxy - 1, maxy + 1 do
276 for zz = z - dev, z + dev do
277 local vi = a:index(x - dev, yy, zz)
278 local via = a:index(x - dev, yy + 1, zz)
279 for xx = x - dev, x + dev do
280 if random() < 0.95 - dev * 0.05 then
281 add_pine_needles(data, vi, c_air, c_ignore, c_snow,
284 add_snow(data, via, c_air, c_ignore, c_snow)
295 add_pine_needles(data, a:index(x, maxy + 1, z), c_air, c_ignore, c_snow,
297 add_pine_needles(data, a:index(x, maxy + 2, z), c_air, c_ignore, c_snow,
298 c_pine_needles) -- Paramat added a pointy top node
300 add_snow(data, a:index(x, maxy + 3, z), c_air, c_ignore, c_snow)
303 -- Lower branches layer
305 for i = 1, 20 do -- Random 2x2 squares of needles
306 local xi = x + random(-3, 2)
307 local yy = maxy + random(-6, -5)
308 local zi = z + random(-3, 2)
313 local vi = a:index(xi, yy, zz)
314 local via = a:index(xi, yy + 1, zz)
315 for xx = xi, xi + 1 do
316 add_pine_needles(data, vi, c_air, c_ignore, c_snow,
319 add_snow(data, via, c_air, c_ignore, c_snow)
328 for yy = my + 1, my + 2 do
329 for zz = z - dev, z + dev do
330 local vi = a:index(x - dev, yy, zz)
331 local via = a:index(x - dev, yy + 1, zz)
332 for xx = x - dev, x + dev do
333 if random() < 0.95 - dev * 0.05 then
334 add_pine_needles(data, vi, c_air, c_ignore, c_snow,
337 add_snow(data, via, c_air, c_ignore, c_snow)
348 data[a:index(x, y, z)] = c_pine_tree -- Force-place lowest trunk node to replace sapling
349 for yy = y + 1, maxy do
350 local vi = a:index(x, yy, z)
351 local node_id = data[vi]
352 if node_id == c_air or node_id == c_ignore or
353 node_id == c_pine_needles or node_id == c_snow then
354 data[vi] = c_pine_tree
366 function default.grow_new_apple_tree(pos)
367 local path = minetest.get_modpath("default") .. "/schematics/apple_tree_from_sapling.mts"
368 minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2},
375 function default.grow_new_jungle_tree(pos)
376 local path = minetest.get_modpath("default") .. "/schematics/jungle_tree_from_sapling.mts"
377 minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2},
384 function default.grow_new_pine_tree(pos)
385 local path = minetest.get_modpath("default") .. "/schematics/pine_tree_from_sapling.mts"
386 minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2},
393 function default.grow_new_acacia_tree(pos)
394 local path = minetest.get_modpath("default") .. "/schematics/acacia_tree_from_sapling.mts"
395 minetest.place_schematic({x = pos.x - 4, y = pos.y - 1, z = pos.z - 4},
396 path, random, nil, false)