2 -- Grow trees from saplings
7 local random = math.random
9 local function 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")
25 minetest.register_abm({
26 nodenames = {"default:sapling", "default:junglesapling",
27 "default:pine_sapling", "default:acacia_sapling"},
30 action = function(pos, node)
31 if not can_grow(pos) then
35 local mapgen = minetest.get_mapgen_params().mgname
36 if node.name == "default:sapling" then
37 minetest.log("action", "A sapling grows into a tree at "..
38 minetest.pos_to_string(pos))
39 if mapgen == "v6" then
40 default.grow_tree(pos, random(1, 4) == 1)
42 default.grow_new_apple_tree(pos)
44 elseif node.name == "default:junglesapling" then
45 minetest.log("action", "A jungle sapling grows into a tree at "..
46 minetest.pos_to_string(pos))
47 if mapgen == "v6" then
48 default.grow_jungle_tree(pos)
50 default.grow_new_jungle_tree(pos)
52 elseif node.name == "default:pine_sapling" then
53 minetest.log("action", "A pine sapling grows into a tree at "..
54 minetest.pos_to_string(pos))
55 if mapgen == "v6" then
56 default.grow_pine_tree(pos)
58 default.grow_new_pine_tree(pos)
60 elseif node.name == "default:acacia_sapling" then
61 minetest.log("action", "An acacia sapling grows into a tree at "..
62 minetest.pos_to_string(pos))
63 default.grow_new_acacia_tree(pos)
73 -- Apple tree and jungle tree trunk and leaves function
75 local function add_trunk_and_leaves(data, a, pos, tree_cid, leaves_cid,
76 height, size, iters, is_apple_tree)
77 local x, y, z = pos.x, pos.y, pos.z
78 local c_air = minetest.get_content_id("air")
79 local c_ignore = minetest.get_content_id("ignore")
80 local c_apple = minetest.get_content_id("default:apple")
83 data[a:index(x, y, z)] = tree_cid -- Force-place lowest trunk node to replace sapling
84 for yy = y + 1, y + height - 1 do
85 local vi = a:index(x, yy, z)
86 local node_id = data[vi]
87 if node_id == c_air or node_id == c_ignore or node_id == leaves_cid then
92 -- Force leaves near the trunk
94 for y_dist = -size, 1 do
95 local vi = a:index(x - 1, y + height + y_dist, z + z_dist)
97 if data[vi] == c_air or data[vi] == c_ignore then
98 if is_apple_tree and random(1, 8) == 1 then
101 data[vi] = leaves_cid
109 -- Randomly add leaves in 2x2x2 clusters.
111 local clust_x = x + random(-size, size - 1)
112 local clust_y = y + height + random(-size, 0)
113 local clust_z = z + random(-size, size - 1)
118 local vi = a:index(clust_x + xi, clust_y + yi, clust_z + zi)
119 if data[vi] == c_air or data[vi] == c_ignore then
120 if is_apple_tree and random(1, 8) == 1 then
123 data[vi] = leaves_cid
135 function default.grow_tree(pos, is_apple_tree, bad)
137 NOTE: Tree-placing code is currently duplicated in the engine
138 and in games that have saplings; both are deprecated but not
142 error("Deprecated use of default.grow_tree")
145 local x, y, z = pos.x, pos.y, pos.z
146 local height = random(4, 5)
147 local c_tree = minetest.get_content_id("default:tree")
148 local c_leaves = minetest.get_content_id("default:leaves")
150 local vm = minetest.get_voxel_manip()
151 local minp, maxp = vm:read_from_map(
152 {x = pos.x - 2, y = pos.y, z = pos.z - 2},
153 {x = pos.x + 2, y = pos.y + height + 1, z = pos.z + 2}
155 local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
156 local data = vm:get_data()
158 add_trunk_and_leaves(data, a, pos, c_tree, c_leaves, height, 2, 8, is_apple_tree)
168 function default.grow_jungle_tree(pos, bad)
170 NOTE: Jungletree-placing code is currently duplicated in the engine
171 and in games that have saplings; both are deprecated but not
175 error("Deprecated use of default.grow_jungle_tree")
178 local x, y, z = pos.x, pos.y, pos.z
179 local height = random(8, 12)
180 local c_air = minetest.get_content_id("air")
181 local c_ignore = minetest.get_content_id("ignore")
182 local c_jungletree = minetest.get_content_id("default:jungletree")
183 local c_jungleleaves = minetest.get_content_id("default:jungleleaves")
185 local vm = minetest.get_voxel_manip()
186 local minp, maxp = vm:read_from_map(
187 {x = pos.x - 3, y = pos.y - 1, z = pos.z - 3},
188 {x = pos.x + 3, y = pos.y + height + 1, z = pos.z + 3}
190 local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
191 local data = vm:get_data()
193 add_trunk_and_leaves(data, a, pos, c_jungletree, c_jungleleaves, height, 3, 30, false)
196 for z_dist = -1, 1 do
197 local vi_1 = a:index(x - 1, y - 1, z + z_dist)
198 local vi_2 = a:index(x - 1, y, z + z_dist)
199 for x_dist = -1, 1 do
200 if random(1, 3) >= 2 then
201 if data[vi_1] == c_air or data[vi_1] == c_ignore then
202 data[vi_1] = c_jungletree
203 elseif data[vi_2] == c_air or data[vi_2] == c_ignore then
204 data[vi_2] = c_jungletree
218 -- Pine tree from mg mapgen mod, design by sfan5, pointy top added by paramat
220 local function add_pine_needles(data, vi, c_air, c_ignore, c_snow, c_pine_needles)
221 local node_id = data[vi]
222 if node_id == c_air or node_id == c_ignore or node_id == c_snow then
223 data[vi] = c_pine_needles
227 local function add_snow(data, vi, c_air, c_ignore, c_snow)
228 local node_id = data[vi]
229 if node_id == c_air or node_id == c_ignore then
234 function default.grow_pine_tree(pos)
235 local x, y, z = pos.x, pos.y, pos.z
236 local maxy = y + random(9, 13) -- Trunk top
238 local c_air = minetest.get_content_id("air")
239 local c_ignore = minetest.get_content_id("ignore")
240 local c_pine_tree = minetest.get_content_id("default:pine_tree")
241 local c_pine_needles = minetest.get_content_id("default:pine_needles")
242 local c_snow = minetest.get_content_id("default:snow")
243 local c_snowblock = minetest.get_content_id("default:snowblock")
244 local c_dirtsnow = minetest.get_content_id("default:dirt_with_snow")
246 local vm = minetest.get_voxel_manip()
247 local minp, maxp = vm:read_from_map(
248 {x = x - 3, y = y - 1, z = z - 3},
249 {x = x + 3, y = maxy + 3, z = z + 3}
251 local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
252 local data = vm:get_data()
254 -- Scan for snow nodes near sapling to enable snow on branches
256 for yy = y - 1, y + 1 do
257 for zz = z - 1, z + 1 do
258 local vi = a:index(x - 1, yy, zz)
259 for xx = x - 1, x + 1 do
260 local nodid = data[vi]
261 if nodid == c_snow or nodid == c_snowblock or nodid == c_dirtsnow then
269 -- Upper branches layer
271 for yy = maxy - 1, maxy + 1 do
272 for zz = z - dev, z + dev do
273 local vi = a:index(x - dev, yy, zz)
274 local via = a:index(x - dev, yy + 1, zz)
275 for xx = x - dev, x + dev do
276 if random() < 0.95 - dev * 0.05 then
277 add_pine_needles(data, vi, c_air, c_ignore, c_snow,
280 add_snow(data, via, c_air, c_ignore, c_snow)
291 add_pine_needles(data, a:index(x, maxy + 1, z), c_air, c_ignore, c_snow,
293 add_pine_needles(data, a:index(x, maxy + 2, z), c_air, c_ignore, c_snow,
294 c_pine_needles) -- Paramat added a pointy top node
296 add_snow(data, a:index(x, maxy + 3, z), c_air, c_ignore, c_snow)
299 -- Lower branches layer
301 for i = 1, 20 do -- Random 2x2 squares of needles
302 local xi = x + random(-3, 2)
303 local yy = maxy + random(-6, -5)
304 local zi = z + random(-3, 2)
309 local vi = a:index(xi, yy, zz)
310 local via = a:index(xi, yy + 1, zz)
311 for xx = xi, xi + 1 do
312 add_pine_needles(data, vi, c_air, c_ignore, c_snow,
315 add_snow(data, via, c_air, c_ignore, c_snow)
324 for yy = my + 1, my + 2 do
325 for zz = z - dev, z + dev do
326 local vi = a:index(x - dev, yy, zz)
327 local via = a:index(x - dev, yy + 1, zz)
328 for xx = x - dev, x + dev do
329 if random() < 0.95 - dev * 0.05 then
330 add_pine_needles(data, vi, c_air, c_ignore, c_snow,
333 add_snow(data, via, c_air, c_ignore, c_snow)
344 data[a:index(x, y, z)] = c_pine_tree -- Force-place lowest trunk node to replace sapling
345 for yy = y + 1, maxy do
346 local vi = a:index(x, yy, z)
347 local node_id = data[vi]
348 if node_id == c_air or node_id == c_ignore or
349 node_id == c_pine_needles or node_id == c_snow then
350 data[vi] = c_pine_tree
362 function default.grow_new_apple_tree(pos)
363 local path = minetest.get_modpath("default") .. "/schematics/apple_tree.mts"
364 minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2},
371 function default.grow_new_jungle_tree(pos)
372 local path = minetest.get_modpath("default") .. "/schematics/jungle_tree.mts"
373 minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2},
380 function default.grow_new_pine_tree(pos)
381 local path = minetest.get_modpath("default") .. "/schematics/pine_tree.mts"
382 minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2},
389 function default.grow_new_acacia_tree(pos)
390 local path = minetest.get_modpath("default") .. "/schematics/acacia_tree.mts"
391 minetest.place_schematic({x = pos.x - 4, y = pos.y - 1, z = pos.z - 4},
392 path, random, nil, false)