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",
32 "default:aspen_sapling"},
35 action = function(pos, node)
36 if not default.can_grow(pos) then
40 local mapgen = minetest.get_mapgen_params().mgname
41 if node.name == "default:sapling" then
42 minetest.log("action", "A sapling grows into a tree at "..
43 minetest.pos_to_string(pos))
44 if mapgen == "v6" then
45 default.grow_tree(pos, random(1, 4) == 1)
47 default.grow_new_apple_tree(pos)
49 elseif node.name == "default:junglesapling" then
50 minetest.log("action", "A jungle sapling grows into a tree at "..
51 minetest.pos_to_string(pos))
52 if mapgen == "v6" then
53 default.grow_jungle_tree(pos)
55 default.grow_new_jungle_tree(pos)
57 elseif node.name == "default:pine_sapling" then
58 minetest.log("action", "A pine sapling grows into a tree at "..
59 minetest.pos_to_string(pos))
60 if mapgen == "v6" then
61 default.grow_pine_tree(pos)
63 default.grow_new_pine_tree(pos)
65 elseif node.name == "default:acacia_sapling" then
66 minetest.log("action", "An acacia sapling grows into a tree at "..
67 minetest.pos_to_string(pos))
68 default.grow_new_acacia_tree(pos)
69 elseif node.name == "default:aspen_sapling" then
70 minetest.log("action", "An aspen sapling grows into a tree at "..
71 minetest.pos_to_string(pos))
72 default.grow_new_aspen_tree(pos)
82 -- Apple tree and jungle tree trunk and leaves function
84 local function add_trunk_and_leaves(data, a, pos, tree_cid, leaves_cid,
85 height, size, iters, is_apple_tree)
86 local x, y, z = pos.x, pos.y, pos.z
87 local c_air = minetest.get_content_id("air")
88 local c_ignore = minetest.get_content_id("ignore")
89 local c_apple = minetest.get_content_id("default:apple")
92 data[a:index(x, y, z)] = tree_cid -- Force-place lowest trunk node to replace sapling
93 for yy = y + 1, y + height - 1 do
94 local vi = a:index(x, yy, z)
95 local node_id = data[vi]
96 if node_id == c_air or node_id == c_ignore or node_id == leaves_cid then
101 -- Force leaves near the trunk
102 for z_dist = -1, 1 do
103 for y_dist = -size, 1 do
104 local vi = a:index(x - 1, y + height + y_dist, z + z_dist)
105 for x_dist = -1, 1 do
106 if data[vi] == c_air or data[vi] == c_ignore then
107 if is_apple_tree and random(1, 8) == 1 then
110 data[vi] = leaves_cid
118 -- Randomly add leaves in 2x2x2 clusters.
120 local clust_x = x + random(-size, size - 1)
121 local clust_y = y + height + random(-size, 0)
122 local clust_z = z + random(-size, size - 1)
127 local vi = a:index(clust_x + xi, clust_y + yi, clust_z + zi)
128 if data[vi] == c_air or data[vi] == c_ignore then
129 if is_apple_tree and random(1, 8) == 1 then
132 data[vi] = leaves_cid
144 function default.grow_tree(pos, is_apple_tree, bad)
146 NOTE: Tree-placing code is currently duplicated in the engine
147 and in games that have saplings; both are deprecated but not
151 error("Deprecated use of default.grow_tree")
154 local x, y, z = pos.x, pos.y, pos.z
155 local height = random(4, 5)
156 local c_tree = minetest.get_content_id("default:tree")
157 local c_leaves = minetest.get_content_id("default:leaves")
159 local vm = minetest.get_voxel_manip()
160 local minp, maxp = vm:read_from_map(
161 {x = pos.x - 2, y = pos.y, z = pos.z - 2},
162 {x = pos.x + 2, y = pos.y + height + 1, z = pos.z + 2}
164 local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
165 local data = vm:get_data()
167 add_trunk_and_leaves(data, a, pos, c_tree, c_leaves, height, 2, 8, is_apple_tree)
177 function default.grow_jungle_tree(pos, bad)
179 NOTE: Jungletree-placing code is currently duplicated in the engine
180 and in games that have saplings; both are deprecated but not
184 error("Deprecated use of default.grow_jungle_tree")
187 local x, y, z = pos.x, pos.y, pos.z
188 local height = random(8, 12)
189 local c_air = minetest.get_content_id("air")
190 local c_ignore = minetest.get_content_id("ignore")
191 local c_jungletree = minetest.get_content_id("default:jungletree")
192 local c_jungleleaves = minetest.get_content_id("default:jungleleaves")
194 local vm = minetest.get_voxel_manip()
195 local minp, maxp = vm:read_from_map(
196 {x = pos.x - 3, y = pos.y - 1, z = pos.z - 3},
197 {x = pos.x + 3, y = pos.y + height + 1, z = pos.z + 3}
199 local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
200 local data = vm:get_data()
202 add_trunk_and_leaves(data, a, pos, c_jungletree, c_jungleleaves, height, 3, 30, false)
205 for z_dist = -1, 1 do
206 local vi_1 = a:index(x - 1, y - 1, z + z_dist)
207 local vi_2 = a:index(x - 1, y, z + z_dist)
208 for x_dist = -1, 1 do
209 if random(1, 3) >= 2 then
210 if data[vi_1] == c_air or data[vi_1] == c_ignore then
211 data[vi_1] = c_jungletree
212 elseif data[vi_2] == c_air or data[vi_2] == c_ignore then
213 data[vi_2] = c_jungletree
227 -- Pine tree from mg mapgen mod, design by sfan5, pointy top added by paramat
229 local function add_pine_needles(data, vi, c_air, c_ignore, c_snow, c_pine_needles)
230 local node_id = data[vi]
231 if node_id == c_air or node_id == c_ignore or node_id == c_snow then
232 data[vi] = c_pine_needles
236 local function add_snow(data, vi, c_air, c_ignore, c_snow)
237 local node_id = data[vi]
238 if node_id == c_air or node_id == c_ignore then
243 function default.grow_pine_tree(pos)
244 local x, y, z = pos.x, pos.y, pos.z
245 local maxy = y + random(9, 13) -- Trunk top
247 local c_air = minetest.get_content_id("air")
248 local c_ignore = minetest.get_content_id("ignore")
249 local c_pine_tree = minetest.get_content_id("default:pine_tree")
250 local c_pine_needles = minetest.get_content_id("default:pine_needles")
251 local c_snow = minetest.get_content_id("default:snow")
252 local c_snowblock = minetest.get_content_id("default:snowblock")
253 local c_dirtsnow = minetest.get_content_id("default:dirt_with_snow")
255 local vm = minetest.get_voxel_manip()
256 local minp, maxp = vm:read_from_map(
257 {x = x - 3, y = y - 1, z = z - 3},
258 {x = x + 3, y = maxy + 3, z = z + 3}
260 local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
261 local data = vm:get_data()
263 -- Scan for snow nodes near sapling to enable snow on branches
265 for yy = y - 1, y + 1 do
266 for zz = z - 1, z + 1 do
267 local vi = a:index(x - 1, yy, zz)
268 for xx = x - 1, x + 1 do
269 local nodid = data[vi]
270 if nodid == c_snow or nodid == c_snowblock or nodid == c_dirtsnow then
278 -- Upper branches layer
280 for yy = maxy - 1, maxy + 1 do
281 for zz = z - dev, z + dev do
282 local vi = a:index(x - dev, yy, zz)
283 local via = a:index(x - dev, yy + 1, zz)
284 for xx = x - dev, x + dev do
285 if random() < 0.95 - dev * 0.05 then
286 add_pine_needles(data, vi, c_air, c_ignore, c_snow,
289 add_snow(data, via, c_air, c_ignore, c_snow)
300 add_pine_needles(data, a:index(x, maxy + 1, z), c_air, c_ignore, c_snow,
302 add_pine_needles(data, a:index(x, maxy + 2, z), c_air, c_ignore, c_snow,
303 c_pine_needles) -- Paramat added a pointy top node
305 add_snow(data, a:index(x, maxy + 3, z), c_air, c_ignore, c_snow)
308 -- Lower branches layer
310 for i = 1, 20 do -- Random 2x2 squares of needles
311 local xi = x + random(-3, 2)
312 local yy = maxy + random(-6, -5)
313 local zi = z + random(-3, 2)
318 local vi = a:index(xi, yy, zz)
319 local via = a:index(xi, yy + 1, zz)
320 for xx = xi, xi + 1 do
321 add_pine_needles(data, vi, c_air, c_ignore, c_snow,
324 add_snow(data, via, c_air, c_ignore, c_snow)
333 for yy = my + 1, my + 2 do
334 for zz = z - dev, z + dev do
335 local vi = a:index(x - dev, yy, zz)
336 local via = a:index(x - dev, yy + 1, zz)
337 for xx = x - dev, x + dev do
338 if random() < 0.95 - dev * 0.05 then
339 add_pine_needles(data, vi, c_air, c_ignore, c_snow,
342 add_snow(data, via, c_air, c_ignore, c_snow)
353 data[a:index(x, y, z)] = c_pine_tree -- Force-place lowest trunk node to replace sapling
354 for yy = y + 1, maxy do
355 local vi = a:index(x, yy, z)
356 local node_id = data[vi]
357 if node_id == c_air or node_id == c_ignore or
358 node_id == c_pine_needles or node_id == c_snow then
359 data[vi] = c_pine_tree
371 function default.grow_new_apple_tree(pos)
372 local path = minetest.get_modpath("default") .. "/schematics/apple_tree_from_sapling.mts"
373 minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2},
380 function default.grow_new_jungle_tree(pos)
381 local path = minetest.get_modpath("default") .. "/schematics/jungle_tree_from_sapling.mts"
382 minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2},
389 function default.grow_new_pine_tree(pos)
390 local path = minetest.get_modpath("default") .. "/schematics/pine_tree_from_sapling.mts"
391 minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2},
398 function default.grow_new_acacia_tree(pos)
399 local path = minetest.get_modpath("default") .. "/schematics/acacia_tree_from_sapling.mts"
400 minetest.place_schematic({x = pos.x - 4, y = pos.y - 1, z = pos.z - 4},
401 path, random, nil, false)
406 function default.grow_new_aspen_tree(pos)
407 local path = minetest.get_modpath("default") .. "/schematics/aspen_tree_from_sapling.mts"
408 minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2},