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Block_Islands/trees.lua

webmanoffesto Dec 1st, 2017 (edited) 87 Never
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  1. local random = math.random
  2.  
  3. --
  4. -- Grow trees from saplings
  5. --
  6.  
  7. -- 'can grow' function
  8.  
  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
  12.         return false
  13.     end
  14.     local name_under = node_under.name
  15.     local is_soil = minetest.get_item_group(name_under, "soil")
  16.     if is_soil == 0 then
  17.         return false
  18.     end
  19.     local light_level = minetest.get_node_light(pos)
  20.     if not light_level or light_level < 13 then
  21.         return false
  22.     end
  23.     return true
  24. end
  25.  
  26.  
  27. -- 'is snow nearby' function
  28.  
  29. local function is_snow_nearby(pos)
  30.     return minetest.find_node_near(pos, 1,
  31.         {"default:snow", "default:snowblock", "default:dirt_with_snow"})
  32. end
  33.  
  34.  
  35. -- Sapling ABM
  36.  
  37. function default.grow_sapling(pos)
  38.     if not default.can_grow(pos) then
  39.         -- try a bit later again
  40.         minetest.get_node_timer(pos):start(math.random(240, 600))
  41.         return
  42.     end
  43.  
  44.     local mg_name = minetest.get_mapgen_setting("mg_name")
  45.     local node = minetest.get_node(pos)
  46.     if node.name == "default:sapling" then
  47.         minetest.log("action", "A sapling grows into a tree at "..
  48.             minetest.pos_to_string(pos))
  49.         if mg_name == "v6" then
  50.             default.grow_tree(pos, random(1, 4) == 1)
  51.         else
  52.             default.grow_new_apple_tree(pos)
  53.         end
  54.     elseif node.name == "default:junglesapling" then
  55.         minetest.log("action", "A jungle sapling grows into a tree at "..
  56.             minetest.pos_to_string(pos))
  57.         if mg_name == "v6" then
  58.             default.grow_jungle_tree(pos)
  59.         else
  60.             default.grow_new_jungle_tree(pos)
  61.         end
  62.     elseif node.name == "default:pine_sapling" then
  63.         minetest.log("action", "A pine sapling grows into a tree at "..
  64.             minetest.pos_to_string(pos))
  65.         local snow = is_snow_nearby(pos)
  66.         if mg_name == "v6" then
  67.             default.grow_pine_tree(pos, snow)
  68.         elseif snow then
  69.             default.grow_new_snowy_pine_tree(pos)
  70.         else
  71.             default.grow_new_pine_tree(pos)
  72.         end
  73.     elseif node.name == "default:acacia_sapling" then
  74.         minetest.log("action", "An acacia sapling grows into a tree at "..
  75.             minetest.pos_to_string(pos))
  76.         default.grow_new_acacia_tree(pos)
  77.     elseif node.name == "default:aspen_sapling" then
  78.         minetest.log("action", "An aspen sapling grows into a tree at "..
  79.             minetest.pos_to_string(pos))
  80.         default.grow_new_aspen_tree(pos)
  81.     end
  82. end
  83.  
  84. minetest.register_lbm({
  85.     name = "default:convert_saplings_to_node_timer",
  86.     nodenames = {"default:sapling", "default:junglesapling",
  87.             "default:pine_sapling", "default:acacia_sapling",
  88.             "default:aspen_sapling"},
  89.     action = function(pos)
  90.         minetest.get_node_timer(pos):start(math.random(1200, 2400))
  91.     end
  92. })
  93.  
  94. --
  95. -- Tree generation
  96. --
  97.  
  98. -- Apple tree and jungle tree trunk and leaves function
  99.  
  100. local function add_trunk_and_leaves(data, a, pos, tree_cid, leaves_cid,
  101.         height, size, iters, is_apple_tree)
  102.     local x, y, z = pos.x, pos.y, pos.z
  103.     local c_air = minetest.get_content_id("air")
  104.     local c_ignore = minetest.get_content_id("ignore")
  105.     local c_apple = minetest.get_content_id("default:apple")
  106.  
  107.     -- Trunk
  108.     data[a:index(x, y, z)] = tree_cid -- Force-place lowest trunk node to replace sapling
  109.     for yy = y + 1, y + height - 1 do
  110.         local vi = a:index(x, yy, z)
  111.         local node_id = data[vi]
  112.         if node_id == c_air or node_id == c_ignore or node_id == leaves_cid then
  113.             data[vi] = tree_cid
  114.         end
  115.     end
  116.  
  117.     -- Force leaves near the trunk
  118.     for z_dist = -1, 1 do
  119.     for y_dist = -size, 1 do
  120.         local vi = a:index(x - 1, y + height + y_dist, z + z_dist)
  121.         for x_dist = -1, 1 do
  122.             if data[vi] == c_air or data[vi] == c_ignore then
  123.                 if is_apple_tree and random(1, 8) == 1 then
  124.                     data[vi] = c_apple
  125.                 else
  126.                     data[vi] = leaves_cid
  127.                 end
  128.             end
  129.             vi = vi + 1
  130.         end
  131.     end
  132.     end
  133.  
  134.     -- Randomly add leaves in 2x2x2 clusters.
  135.     for i = 1, iters do
  136.         local clust_x = x + random(-size, size - 1)
  137.         local clust_y = y + height + random(-size, 0)
  138.         local clust_z = z + random(-size, size - 1)
  139.  
  140.         for xi = 0, 1 do
  141.         for yi = 0, 1 do
  142.         for zi = 0, 1 do
  143.             local vi = a:index(clust_x + xi, clust_y + yi, clust_z + zi)
  144.             if data[vi] == c_air or data[vi] == c_ignore then
  145.                 if is_apple_tree and random(1, 8) == 1 then
  146.                     data[vi] = c_apple
  147.                 else
  148.                     data[vi] = leaves_cid
  149.                 end
  150.             end
  151.         end
  152.         end
  153.         end
  154.     end
  155. end
  156.  
  157.  
  158. -- Apple tree
  159.  
  160. function default.grow_tree(pos, is_apple_tree, bad)
  161.     --[[
  162.         NOTE: Tree-placing code is currently duplicated in the engine
  163.         and in games that have saplings; both are deprecated but not
  164.         replaced yet
  165.     --]]
  166.     if bad then
  167.         error("Deprecated use of default.grow_tree")
  168.     end
  169.  
  170.     local x, y, z = pos.x, pos.y, pos.z
  171.     local height = random(4, 5)
  172.     local c_tree = minetest.get_content_id("default:tree")
  173.     local c_leaves = minetest.get_content_id("default:leaves")
  174.  
  175.     local vm = minetest.get_voxel_manip()
  176.     local minp, maxp = vm:read_from_map(
  177.         {x = x - 2, y = y, z = z - 2},
  178.         {x = x + 2, y = y + height + 1, z = z + 2}
  179.     )
  180.     local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
  181.     local data = vm:get_data()
  182.  
  183.     add_trunk_and_leaves(data, a, pos, c_tree, c_leaves, height, 2, 8, is_apple_tree)
  184.  
  185.     vm:set_data(data)
  186.     vm:write_to_map()
  187.     vm:update_map()
  188. end
  189.  
  190.  
  191. -- Jungle tree
  192.  
  193. function default.grow_jungle_tree(pos, bad)
  194.     --[[
  195.         NOTE: Jungletree-placing code is currently duplicated in the engine
  196.         and in games that have saplings; both are deprecated but not
  197.         replaced yet
  198.     --]]
  199.     if bad then
  200.         error("Deprecated use of default.grow_jungle_tree")
  201.     end
  202.  
  203.     local x, y, z = pos.x, pos.y, pos.z
  204.     local height = random(8, 12)
  205.     local c_air = minetest.get_content_id("air")
  206.     local c_ignore = minetest.get_content_id("ignore")
  207.     local c_jungletree = minetest.get_content_id("default:jungletree")
  208.     local c_jungleleaves = minetest.get_content_id("default:jungleleaves")
  209.  
  210.     local vm = minetest.get_voxel_manip()
  211.     local minp, maxp = vm:read_from_map(
  212.         {x = x - 3, y = y - 1, z = z - 3},
  213.         {x = x + 3, y = y + height + 1, z = z + 3}
  214.     )
  215.     local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
  216.     local data = vm:get_data()
  217.  
  218.     add_trunk_and_leaves(data, a, pos, c_jungletree, c_jungleleaves,
  219.         height, 3, 30, false)
  220.  
  221.     -- Roots
  222.     for z_dist = -1, 1 do
  223.         local vi_1 = a:index(x - 1, y - 1, z + z_dist)
  224.         local vi_2 = a:index(x - 1, y, z + z_dist)
  225.         for x_dist = -1, 1 do
  226.             if random(1, 3) >= 2 then
  227.                 if data[vi_1] == c_air or data[vi_1] == c_ignore then
  228.                     data[vi_1] = c_jungletree
  229.                 elseif data[vi_2] == c_air or data[vi_2] == c_ignore then
  230.                     data[vi_2] = c_jungletree
  231.                 end
  232.             end
  233.             vi_1 = vi_1 + 1
  234.             vi_2 = vi_2 + 1
  235.         end
  236.     end
  237.  
  238.     vm:set_data(data)
  239.     vm:write_to_map()
  240.     vm:update_map()
  241. end
  242.  
  243.  
  244. -- Pine tree from mg mapgen mod, design by sfan5, pointy top added by paramat
  245.  
  246. local function add_pine_needles(data, vi, c_air, c_ignore, c_snow, c_pine_needles)
  247.     local node_id = data[vi]
  248.     if node_id == c_air or node_id == c_ignore or node_id == c_snow then
  249.         data[vi] = c_pine_needles
  250.     end
  251. end
  252.  
  253. local function add_snow(data, vi, c_air, c_ignore, c_snow)
  254.     local node_id = data[vi]
  255.     if node_id == c_air or node_id == c_ignore then
  256.         data[vi] = c_snow
  257.     end
  258. end
  259.  
  260. function default.grow_pine_tree(pos, snow)
  261.     local x, y, z = pos.x, pos.y, pos.z
  262.     local maxy = y + random(9, 13) -- Trunk top
  263.  
  264.     local c_air = minetest.get_content_id("air")
  265.     local c_ignore = minetest.get_content_id("ignore")
  266.     local c_pine_tree = minetest.get_content_id("default:pine_tree")
  267.     local c_pine_needles  = minetest.get_content_id("default:pine_needles")
  268.     local c_snow = minetest.get_content_id("default:snow")
  269.  
  270.     local vm = minetest.get_voxel_manip()
  271.     local minp, maxp = vm:read_from_map(
  272.         {x = x - 3, y = y, z = z - 3},
  273.         {x = x + 3, y = maxy + 3, z = z + 3}
  274.     )
  275.     local a = VoxelArea:new({MinEdge = minp, MaxEdge = maxp})
  276.     local data = vm:get_data()
  277.  
  278.     -- Upper branches layer
  279.     local dev = 3
  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,
  287.                         c_pine_needles)
  288.                     if snow then
  289.                         add_snow(data, via, c_air, c_ignore, c_snow)
  290.                     end
  291.                 end
  292.                 vi  = vi + 1
  293.                 via = via + 1
  294.             end
  295.         end
  296.         dev = dev - 1
  297.     end
  298.  
  299.     -- Centre top nodes
  300.     add_pine_needles(data, a:index(x, maxy + 1, z), c_air, c_ignore, c_snow,
  301.         c_pine_needles)
  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
  304.     if snow then
  305.         add_snow(data, a:index(x, maxy + 3, z), c_air, c_ignore, c_snow)
  306.     end
  307.  
  308.     -- Lower branches layer
  309.     local my = 0
  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)
  314.         if yy > my then
  315.             my = yy
  316.         end
  317.         for zz = zi, zi+1 do
  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,
  322.                     c_pine_needles)
  323.                 if snow then
  324.                     add_snow(data, via, c_air, c_ignore, c_snow)
  325.                 end
  326.                 vi  = vi + 1
  327.                 via = via + 1
  328.             end
  329.         end
  330.     end
  331.  
  332.     dev = 2
  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,
  340.                         c_pine_needles)
  341.                     if snow then
  342.                         add_snow(data, via, c_air, c_ignore, c_snow)
  343.                     end
  344.                 end
  345.                 vi  = vi + 1
  346.                 via = via + 1
  347.             end
  348.         end
  349.         dev = dev - 1
  350.     end
  351.  
  352.     -- Trunk
  353.     -- Force-place lowest trunk node to replace sapling
  354.     data[a:index(x, y, z)] = c_pine_tree
  355.     for yy = y + 1, maxy do
  356.         local vi = a:index(x, yy, z)
  357.         local node_id = data[vi]
  358.         if node_id == c_air or node_id == c_ignore or
  359.                 node_id == c_pine_needles or node_id == c_snow then
  360.             data[vi] = c_pine_tree
  361.         end
  362.     end
  363.  
  364.     vm:set_data(data)
  365.     vm:write_to_map()
  366.     vm:update_map()
  367. end
  368.  
  369.  
  370. -- New apple tree
  371.  
  372. function default.grow_new_apple_tree(pos)
  373.     local path = minetest.get_modpath("default") ..
  374.         "/schematics/apple_tree_from_sapling.mts"
  375.     minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2},
  376.         path, "0", nil, false)
  377. end
  378.  
  379.  
  380. -- New jungle tree
  381.  
  382. function default.grow_new_jungle_tree(pos)
  383.     local path = minetest.get_modpath("default") ..
  384.         "/schematics/jungle_tree_from_sapling.mts"
  385.     minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2},
  386.         path, "random", nil, false)
  387. end
  388.  
  389.  
  390. -- New pine tree
  391.  
  392. function default.grow_new_pine_tree(pos)
  393.     local path = minetest.get_modpath("default") ..
  394.         "/schematics/pine_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)
  397. end
  398.  
  399.  
  400. -- New snowy pine tree
  401.  
  402. function default.grow_new_snowy_pine_tree(pos)
  403.     local path = minetest.get_modpath("default") ..
  404.         "/schematics/snowy_pine_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)
  407. end
  408.  
  409.  
  410. -- New acacia tree
  411.  
  412. function default.grow_new_acacia_tree(pos)
  413.     local path = minetest.get_modpath("default") ..
  414.         "/schematics/acacia_tree_from_sapling.mts"
  415.     minetest.place_schematic({x = pos.x - 4, y = pos.y - 1, z = pos.z - 4},
  416.         path, "random", nil, false)
  417. end
  418.  
  419.  
  420. -- New aspen tree
  421.  
  422. function default.grow_new_aspen_tree(pos)
  423.     local path = minetest.get_modpath("default") ..
  424.         "/schematics/aspen_tree_from_sapling.mts"
  425.     minetest.place_schematic({x = pos.x - 2, y = pos.y - 1, z = pos.z - 2},
  426.         path, "0", nil, false)
  427. end
  428.  
  429.  
  430. --
  431. -- Sapling 'on place' function to check protection of node and resulting tree volume
  432. --
  433.  
  434. function default.sapling_on_place(itemstack, placer, pointed_thing,
  435.         sapling_name, minp_relative, maxp_relative, interval)
  436.     -- Position of sapling
  437.     local pos = pointed_thing.under
  438.     local node = minetest.get_node_or_nil(pos)
  439.     local pdef = node and minetest.registered_nodes[node.name]
  440.  
  441.     if pdef and pdef.on_rightclick and not placer:get_player_control().sneak then
  442.         return pdef.on_rightclick(pos, node, placer, itemstack, pointed_thing)
  443.     end
  444.  
  445.     if not pdef or not pdef.buildable_to then
  446.         pos = pointed_thing.above
  447.         node = minetest.get_node_or_nil(pos)
  448.         pdef = node and minetest.registered_nodes[node.name]
  449.         if not pdef or not pdef.buildable_to then
  450.             return itemstack
  451.         end
  452.     end
  453.  
  454.     local player_name = placer:get_player_name()
  455.     -- Check sapling position for protection
  456.     if minetest.is_protected(pos, player_name) then
  457.         minetest.record_protection_violation(pos, player_name)
  458.         return itemstack
  459.     end
  460.     -- Check tree volume for protection
  461.     if not default.intersects_protection(
  462.             vector.add(pos, minp_relative),
  463.             vector.add(pos, maxp_relative),
  464.             player_name,
  465.             interval) then
  466.         minetest.set_node(pos, {name = sapling_name})
  467.         if not minetest.setting_getbool("creative_mode") then
  468.             itemstack:take_item()
  469.         end
  470.     else
  471.         minetest.record_protection_violation(pos, player_name)
  472.         -- Print extra information to explain
  473.         minetest.chat_send_player(player_name, "Tree will intersect protection")
  474.     end
  475.  
  476.     return itemstack
  477. end
  478. --[[
  479. =================================================================================
  480.  
  481. /home/nathan/.minetest/games/Block_Islands/mods/default/trees.lua
  482.  
  483. The .minetest/games/Block_Islands/mods/default/trees.lua:84 simply is
  484.      dofile(default_path.."/trees.lua")
  485. =================================================================================
  486. --]]
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