5 local random = math.random
7 local function can_grow(pos)
8 local node_under = minetest.get_node_or_nil({x = pos.x, y = pos.y - 1, z = pos.z})
12 local name_under = node_under.name
13 local is_soil = minetest.get_item_group(name_under, "soil")
22 minetest.register_abm({
23 nodenames = {"default:sapling"},
26 action = function(pos, node)
27 if not can_grow(pos) then
31 minetest.log("action", "A sapling grows into a tree at "..
32 minetest.pos_to_string(pos))
33 default.grow_tree(pos, random(1, 4) == 1)
37 minetest.register_abm({
38 nodenames = {"default:junglesapling"},
41 action = function(pos, node)
42 if not can_grow(pos) then
46 minetest.log("action", "A jungle sapling grows into a tree at "..
47 minetest.pos_to_string(pos))
48 default.grow_jungle_tree(pos)
52 minetest.register_abm({
53 nodenames = {"default:pine_sapling"},
56 action = function(pos, node)
57 if not can_grow(pos) then
61 minetest.log("action", "A pine sapling grows into a tree at "..
62 minetest.pos_to_string(pos))
63 default.grow_pine_tree(pos)
67 -- Appletree, jungletree function
69 local function add_trunk_and_leaves(data, a, pos, tree_cid, leaves_cid,
70 height, size, iters, is_apple_tree)
71 local x, y, z = pos.x, pos.y, pos.z
72 local c_air = minetest.get_content_id("air")
73 local c_ignore = minetest.get_content_id("ignore")
74 local c_apple = minetest.get_content_id("default:apple")
77 for y_dist = 0, height - 1 do
78 local vi = a:index(x, y + y_dist, z)
79 local node_id = data[vi]
80 if y_dist == 0 or node_id == c_air or node_id == c_ignore
81 or node_id == leaves_cid then
86 -- Force leaves near the trunk
88 for y_dist = -size, 1 do
89 local vi = a:index(x - 1, y + height + y_dist, z + z_dist)
91 if data[vi] == c_air or data[vi] == c_ignore then
92 if is_apple_tree and random(1, 8) == 1 then
103 -- Randomly add leaves in 2x2x2 clusters.
105 local clust_x = x + random(-size, size - 1)
106 local clust_y = y + height + random(-size, 0)
107 local clust_z = z + random(-size, size - 1)
112 local vi = a:index(clust_x + xi, clust_y + yi, clust_z + zi)
113 if data[vi] == c_air or data[vi] == c_ignore then
114 if is_apple_tree and random(1, 8) == 1 then
117 data[vi] = leaves_cid
128 function default.grow_tree(pos, is_apple_tree, bad)
130 NOTE: Tree-placing code is currently duplicated in the engine
131 and in games that have saplings; both are deprecated but not
135 error("Deprecated use of default.grow_tree")
138 local x, y, z = pos.x, pos.y, pos.z
139 local height = random(4, 5)
140 local c_tree = minetest.get_content_id("default:tree")
141 local c_leaves = minetest.get_content_id("default:leaves")
143 local vm = minetest.get_voxel_manip()
144 local minp, maxp = vm:read_from_map(
145 {x = pos.x - 2, y = pos.y, z = pos.z - 2},
146 {x = pos.x + 2, y = pos.y + height + 1, z = pos.z + 2}
148 local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
149 local data = vm:get_data()
151 add_trunk_and_leaves(data, a, pos, c_tree, c_leaves, height, 2, 8, is_apple_tree)
160 function default.grow_jungle_tree(pos, bad)
162 NOTE: Jungletree-placing code is currently duplicated in the engine
163 and in games that have saplings; both are deprecated but not
167 error("Deprecated use of default.grow_jungle_tree")
170 local x, y, z = pos.x, pos.y, pos.z
171 local height = random(8, 12)
172 local c_air = minetest.get_content_id("air")
173 local c_ignore = minetest.get_content_id("ignore")
174 local c_jungletree = minetest.get_content_id("default:jungletree")
175 local c_jungleleaves = minetest.get_content_id("default:jungleleaves")
177 local vm = minetest.get_voxel_manip()
178 local minp, maxp = vm:read_from_map(
179 {x = pos.x - 3, y = pos.y - 1, z = pos.z - 3},
180 {x = pos.x + 3, y = pos.y + height + 1, z = pos.z + 3}
182 local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
183 local data = vm:get_data()
185 add_trunk_and_leaves(data, a, pos, c_jungletree, c_jungleleaves, height, 3, 30, false)
188 for z_dist = -1, 1 do
189 local vi_1 = a:index(x - 1, y - 1, z + z_dist)
190 local vi_2 = a:index(x - 1, y, z + z_dist)
191 for x_dist = -1, 1 do
192 if random(1, 3) >= 2 then
193 if data[vi_1] == c_air or data[vi_1] == c_ignore then
194 data[vi_1] = c_jungletree
195 elseif data[vi_2] == c_air or data[vi_2] == c_ignore then
196 data[vi_2] = c_jungletree
209 -- Pinetree from mg mapgen mod, design by sfan5, pointy top added by paramat
211 local function add_pine_needles(data, vi, c_air, c_ignore, c_snow, c_pine_needles)
212 if data[vi] == c_air or data[vi] == c_ignore or data[vi] == c_snow then
213 data[vi] = c_pine_needles
217 local function add_snow(data, vi, c_air, c_ignore, c_snow)
218 if data[vi] == c_air or data[vi] == c_ignore then
223 function default.grow_pine_tree(pos)
224 local x, y, z = pos.x, pos.y, pos.z
225 local maxy = y + random(9, 13) -- Trunk top
227 local c_air = minetest.get_content_id("air")
228 local c_ignore = minetest.get_content_id("ignore")
229 local c_pinetree = minetest.get_content_id("default:pinetree")
230 local c_pine_needles = minetest.get_content_id("default:pine_needles")
231 local c_snow = minetest.get_content_id("default:snow")
232 local c_snowblock = minetest.get_content_id("default:snowblock")
233 local c_dirtsnow = minetest.get_content_id("default:dirt_with_snow")
235 local vm = minetest.get_voxel_manip()
236 local minp, maxp = vm:read_from_map(
237 {x = x - 3, y = y - 1, z = z - 3},
238 {x = x + 3, y = maxy + 3, z = z + 3}
240 local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
241 local data = vm:get_data()
243 -- Scan for snow nodes near sapling
245 for yy = y - 1, y + 1 do
246 for zz = z - 1, z + 1 do
247 local vi = a:index(x - 1, yy, zz)
248 for xx = x - 1, x + 1 do
249 local nodid = data[vi]
251 or nodid == c_snowblock
252 or nodid == c_dirtsnow then
260 -- Upper branches layer
262 for yy = maxy - 1, maxy + 1 do
263 for zz = z - dev, z + dev do
264 local vi = a:index(x - dev, yy, zz)
265 local via = a:index(x - dev, yy + 1, zz)
266 for xx = x - dev, x + dev do
267 if random() < 0.95 - dev * 0.05 then
268 add_pine_needles(data, vi, c_air, c_ignore, c_snow,
271 add_snow(data, via, c_air, c_ignore, c_snow)
282 add_pine_needles(data, a:index(x, maxy + 1, z), c_air, c_ignore, c_snow,
284 add_pine_needles(data, a:index(x, maxy + 2, z), c_air, c_ignore, c_snow,
285 c_pine_needles) -- Paramat added a pointy top node
287 add_snow(data, a:index(x, maxy + 3, z), c_air, c_ignore, c_snow)
290 -- Lower branches layer
292 for i = 1, 20 do -- Random 2x2 squares of needles
293 local xi = x + random(-3, 2)
294 local yy = maxy + random(-6, -5)
295 local zi = z + random(-3, 2)
300 local vi = a:index(xi, yy, zz)
301 local via = a:index(xi, yy + 1, zz)
302 for xx = xi, xi + 1 do
303 add_pine_needles(data, vi, c_air, c_ignore, c_snow,
306 add_snow(data, via, c_air, c_ignore, c_snow)
315 for yy = my + 1, my + 2 do
316 for zz = z - dev, z + dev do
317 local vi = a:index(x - dev, yy, zz)
318 local via = a:index(x - dev, yy + 1, zz)
319 for xx = x - dev, x + dev do
320 if random() < 0.95 - dev * 0.05 then
321 add_pine_needles(data, vi, c_air, c_ignore, c_snow,
324 add_snow(data, via, c_air, c_ignore, c_snow)
336 local vi = a:index(x, yy, z)
337 data[vi] = c_pinetree