1 local random = math.random
4 -- Grow trees from saplings
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
27 -- 'is snow nearby' function
29 local function is_snow_nearby(pos)
30 local x, y, z = pos.x, pos.y, pos.z
31 local c_snow = minetest.get_content_id("default:snow")
32 local c_snowblock = minetest.get_content_id("default:snowblock")
33 local c_dirtsnow = minetest.get_content_id("default:dirt_with_snow")
35 local vm = minetest.get_voxel_manip()
36 local minp, maxp = vm:read_from_map(
37 {x = x - 1, y = y - 1, z = z - 1},
38 {x = x + 1, y = y + 1, z = z + 1}
40 local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
41 local data = vm:get_data()
43 for yy = y - 1, y + 1 do
44 for zz = z - 1, z + 1 do
45 local vi = a:index(x - 1, yy, zz)
46 for xx = x - 1, x + 1 do
47 local nodid = data[vi]
48 if nodid == c_snow or nodid == c_snowblock or nodid == c_dirtsnow then
62 minetest.register_abm({
63 nodenames = {"default:sapling", "default:junglesapling",
64 "default:pine_sapling", "default:acacia_sapling",
65 "default:aspen_sapling"},
68 action = function(pos, node)
69 if not default.can_grow(pos) then
73 local mapgen = minetest.get_mapgen_params().mgname
74 if node.name == "default:sapling" then
75 minetest.log("action", "A sapling grows into a tree at "..
76 minetest.pos_to_string(pos))
77 if mapgen == "v6" then
78 default.grow_tree(pos, random(1, 4) == 1)
80 default.grow_new_apple_tree(pos)
82 elseif node.name == "default:junglesapling" then
83 minetest.log("action", "A jungle sapling grows into a tree at "..
84 minetest.pos_to_string(pos))
85 if mapgen == "v6" then
86 default.grow_jungle_tree(pos)
88 default.grow_new_jungle_tree(pos)
90 elseif node.name == "default:pine_sapling" then
91 minetest.log("action", "A pine sapling grows into a tree at "..
92 minetest.pos_to_string(pos))
93 local snow = is_snow_nearby(pos)
94 if mapgen == "v6" then
95 default.grow_pine_tree(pos, snow)
97 default.grow_new_snowy_pine_tree(pos)
99 default.grow_new_pine_tree(pos)
101 elseif node.name == "default:acacia_sapling" then
102 minetest.log("action", "An acacia sapling grows into a tree at "..
103 minetest.pos_to_string(pos))
104 default.grow_new_acacia_tree(pos)
105 elseif node.name == "default:aspen_sapling" then
106 minetest.log("action", "An aspen sapling grows into a tree at "..
107 minetest.pos_to_string(pos))
108 default.grow_new_aspen_tree(pos)
118 -- Apple tree and jungle tree trunk and leaves function
120 local function add_trunk_and_leaves(data, a, pos, tree_cid, leaves_cid,
121 height, size, iters, is_apple_tree)
122 local x, y, z = pos.x, pos.y, pos.z
123 local c_air = minetest.get_content_id("air")
124 local c_ignore = minetest.get_content_id("ignore")
125 local c_apple = minetest.get_content_id("default:apple")
128 data[a:index(x, y, z)] = tree_cid -- Force-place lowest trunk node to replace sapling
129 for yy = y + 1, y + height - 1 do
130 local vi = a:index(x, yy, z)
131 local node_id = data[vi]
132 if node_id == c_air or node_id == c_ignore or node_id == leaves_cid then
137 -- Force leaves near the trunk
138 for z_dist = -1, 1 do
139 for y_dist = -size, 1 do
140 local vi = a:index(x - 1, y + height + y_dist, z + z_dist)
141 for x_dist = -1, 1 do
142 if data[vi] == c_air or data[vi] == c_ignore then
143 if is_apple_tree and random(1, 8) == 1 then
146 data[vi] = leaves_cid
154 -- Randomly add leaves in 2x2x2 clusters.
156 local clust_x = x + random(-size, size - 1)
157 local clust_y = y + height + random(-size, 0)
158 local clust_z = z + random(-size, size - 1)
163 local vi = a:index(clust_x + xi, clust_y + yi, clust_z + zi)
164 if data[vi] == c_air or data[vi] == c_ignore then
165 if is_apple_tree and random(1, 8) == 1 then
168 data[vi] = leaves_cid
180 function default.grow_tree(pos, is_apple_tree, bad)
182 NOTE: Tree-placing code is currently duplicated in the engine
183 and in games that have saplings; both are deprecated but not
187 error("Deprecated use of default.grow_tree")
190 local x, y, z = pos.x, pos.y, pos.z
191 local height = random(4, 5)
192 local c_tree = minetest.get_content_id("default:tree")
193 local c_leaves = minetest.get_content_id("default:leaves")
195 local vm = minetest.get_voxel_manip()
196 local minp, maxp = vm:read_from_map(
197 {x = pos.x - 2, y = pos.y, z = pos.z - 2},
198 {x = pos.x + 2, y = pos.y + height + 1, z = pos.z + 2}
200 local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
201 local data = vm:get_data()
203 add_trunk_and_leaves(data, a, pos, c_tree, c_leaves, height, 2, 8, is_apple_tree)
213 function default.grow_jungle_tree(pos, bad)
215 NOTE: Jungletree-placing code is currently duplicated in the engine
216 and in games that have saplings; both are deprecated but not
220 error("Deprecated use of default.grow_jungle_tree")
223 local x, y, z = pos.x, pos.y, pos.z
224 local height = random(8, 12)
225 local c_air = minetest.get_content_id("air")
226 local c_ignore = minetest.get_content_id("ignore")
227 local c_jungletree = minetest.get_content_id("default:jungletree")
228 local c_jungleleaves = minetest.get_content_id("default:jungleleaves")
230 local vm = minetest.get_voxel_manip()
231 local minp, maxp = vm:read_from_map(
232 {x = pos.x - 3, y = pos.y - 1, z = pos.z - 3},
233 {x = pos.x + 3, y = pos.y + height + 1, z = pos.z + 3}
235 local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
236 local data = vm:get_data()
238 add_trunk_and_leaves(data, a, pos, c_jungletree, c_jungleleaves,
239 height, 3, 30, false)
242 for z_dist = -1, 1 do
243 local vi_1 = a:index(x - 1, y - 1, z + z_dist)
244 local vi_2 = a:index(x - 1, y, z + z_dist)
245 for x_dist = -1, 1 do
246 if random(1, 3) >= 2 then
247 if data[vi_1] == c_air or data[vi_1] == c_ignore then
248 data[vi_1] = c_jungletree
249 elseif data[vi_2] == c_air or data[vi_2] == c_ignore then
250 data[vi_2] = c_jungletree
264 -- Pine tree from mg mapgen mod, design by sfan5, pointy top added by paramat
266 local function add_pine_needles(data, vi, c_air, c_ignore, c_snow, c_pine_needles)
267 local node_id = data[vi]
268 if node_id == c_air or node_id == c_ignore or node_id == c_snow then
269 data[vi] = c_pine_needles
273 local function add_snow(data, vi, c_air, c_ignore, c_snow)
274 local node_id = data[vi]
275 if node_id == c_air or node_id == c_ignore then
280 function default.grow_pine_tree(pos, snow)
281 local x, y, z = pos.x, pos.y, pos.z
282 local maxy = y + random(9, 13) -- Trunk top
284 local c_air = minetest.get_content_id("air")
285 local c_ignore = minetest.get_content_id("ignore")
286 local c_pine_tree = minetest.get_content_id("default:pine_tree")
287 local c_pine_needles = minetest.get_content_id("default:pine_needles")
288 local c_snow = minetest.get_content_id("default:snow")
290 local vm = minetest.get_voxel_manip()
291 local minp, maxp = vm:read_from_map(
292 {x = x - 3, y = y, z = z - 3},
293 {x = x + 3, y = maxy + 3, z = z + 3}
295 local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
296 local data = vm:get_data()
298 -- Upper branches layer
300 for yy = maxy - 1, maxy + 1 do
301 for zz = z - dev, z + dev do
302 local vi = a:index(x - dev, yy, zz)
303 local via = a:index(x - dev, yy + 1, zz)
304 for xx = x - dev, x + dev do
305 if random() < 0.95 - dev * 0.05 then
306 add_pine_needles(data, vi, c_air, c_ignore, c_snow,
309 add_snow(data, via, c_air, c_ignore, c_snow)
320 add_pine_needles(data, a:index(x, maxy + 1, z), c_air, c_ignore, c_snow,
322 add_pine_needles(data, a:index(x, maxy + 2, z), c_air, c_ignore, c_snow,
323 c_pine_needles) -- Paramat added a pointy top node
325 add_snow(data, a:index(x, maxy + 3, z), c_air, c_ignore, c_snow)
328 -- Lower branches layer
330 for i = 1, 20 do -- Random 2x2 squares of needles
331 local xi = x + random(-3, 2)
332 local yy = maxy + random(-6, -5)
333 local zi = z + random(-3, 2)
338 local vi = a:index(xi, yy, zz)
339 local via = a:index(xi, yy + 1, zz)
340 for xx = xi, xi + 1 do
341 add_pine_needles(data, vi, c_air, c_ignore, c_snow,
344 add_snow(data, via, c_air, c_ignore, c_snow)
353 for yy = my + 1, my + 2 do
354 for zz = z - dev, z + dev do
355 local vi = a:index(x - dev, yy, zz)
356 local via = a:index(x - dev, yy + 1, zz)
357 for xx = x - dev, x + dev do
358 if random() < 0.95 - dev * 0.05 then
359 add_pine_needles(data, vi, c_air, c_ignore, c_snow,
362 add_snow(data, via, c_air, c_ignore, c_snow)
373 -- Force-place lowest trunk node to replace sapling
374 data[a:index(x, y, z)] = c_pine_tree
375 for yy = y + 1, maxy do
376 local vi = a:index(x, yy, z)
377 local node_id = data[vi]
378 if node_id == c_air or node_id == c_ignore or
379 node_id == c_pine_needles or node_id == c_snow then
380 data[vi] = c_pine_tree
392 function default.grow_new_apple_tree(pos)
393 local path = minetest.get_modpath("default") ..
394 "/schematics/apple_tree_from_sapling.mts"
395 minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2},
396 path, "0", nil, false)
402 function default.grow_new_jungle_tree(pos)
403 local path = minetest.get_modpath("default") ..
404 "/schematics/jungle_tree_from_sapling.mts"
405 minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2},
406 path, "random", nil, false)
412 function default.grow_new_pine_tree(pos)
413 local path = minetest.get_modpath("default") ..
414 "/schematics/pine_tree_from_sapling.mts"
415 minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2},
416 path, "0", nil, false)
420 -- New snowy pine tree
422 function default.grow_new_snowy_pine_tree(pos)
423 local path = minetest.get_modpath("default") ..
424 "/schematics/snowy_pine_tree_from_sapling.mts"
425 minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2},
426 path, "random", nil, false)
432 function default.grow_new_acacia_tree(pos)
433 local path = minetest.get_modpath("default") ..
434 "/schematics/acacia_tree_from_sapling.mts"
435 minetest.place_schematic({x = pos.x - 4, y = pos.y - 1, z = pos.z - 4},
436 path, "random", nil, false)
441 function default.grow_new_aspen_tree(pos)
442 local path = minetest.get_modpath("default") ..
443 "/schematics/aspen_tree_from_sapling.mts"
444 minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2},
445 path, "0", nil, false)