From bf9c990760ec595d3b3bda7a40a7bae55fa2a352 Mon Sep 17 00:00:00 2001 From: Wuzzy Date: Fri, 26 May 2017 21:25:25 +0200 Subject: [PATCH] New vines growth algorithm (WIP) --- mods/ITEMS/mcl_core/functions.lua | 86 ++++++++++++++++++++++++++++--- 1 file changed, 78 insertions(+), 8 deletions(-) diff --git a/mods/ITEMS/mcl_core/functions.lua b/mods/ITEMS/mcl_core/functions.lua index 1d3723f931..96489931e6 100644 --- a/mods/ITEMS/mcl_core/functions.lua +++ b/mods/ITEMS/mcl_core/functions.lua @@ -759,19 +759,89 @@ minetest.register_abm({ minetest.register_abm({ label = "Vines growth", nodenames = {"mcl_core:vine"}, - interval = 80, - chance = 5, + interval = 47, + chance = 4, action = function(pos, node, active_object_count, active_object_count_wider) - local newpos = {x=pos.x, y=pos.y-1, z=pos.z} - local n = minetest.get_node(newpos) - if n.name == "air" then - local walldir = node.param2 - minetest.add_node(newpos, {name = "mcl_core:vine", param2 = walldir}) + + local neighbor_offsets = { + { x=1, y=0, z=0 }, + { x=-1, y=0, z=0 }, + { x=0, y=0, z=1 }, + { x=0, y=0, z=-1 }, + } + + -- Add vines below pos (if empty) + local spread_down = function(pos, node) + local down = vector.add(pos, {x=0, y=-1, z=0}) + if minetest.get_node(down).name == "air" then + minetest.add_node(down, {name = "mcl_core:vine", param2 = node.param2}) + end end + + -- Add vines above pos if it is backed up + local spread_up = function(pos, node) + local up = vector.add(pos, {x=0, y=1, z=0}) + if minetest.get_node(up).name == "air" then + local backup_dir = minetest.facedir_to_dir(node.param2) + local backup = vector.add(up, backup_dir) + local backupnodename = minetest.get_node(backup).name + minetest.log("error" , minetest.pos_to_string(backup)) + + -- Check if the block above is supported + if mcl_core.supports_vines(backupnodename) then + minetest.add_node(up, {name = "mcl_core:vine", param2 = node.param2}) + end + end + end + + -- Try to spread vines from the 4 horizontal neighbors + local spread_neighbors = function(pos, node, spread_dir) + for n=1, #neighbor_offsets do + if math.random(1,2) == 1 then + local neighbor = vector.add(pos, neighbor_offsets[n]) + local neighbornode = minetest.get_node(neighbor) + if neighbornode.name == "mcl_core:vine" then + if spread_dir == "up" then + spread_up(neighbor, neighbornode) + elseif spread_dir == "down" then + spread_down(neighbor, neighbornode) + end + end + end + end + end + + -- Spread down + local down = {x=pos.x, y=pos.y-1, z=pos.z} + local down_node = minetest.get_node(down) + if down_node.name == "air" then + spread_neighbors(pos, node, "down") + elseif down_node.name == "mcl_core:vine" then + spread_neighbors(down, down_node, "down") + end + + -- Spread up + local up = {x=pos.x, y=pos.y+1, z=pos.z} + local up_node = minetest.get_node(up) + if up_node.name == "air" then + local vines_in_area = minetest.find_nodes_in_area({x=pos.x-4, y=pos.y-1, z=pos.z-4}, {x=pos.x+4, y=pos.y+1, z=pos.z+4}, "mcl_core:vine") + -- Less then 4 vines blocks around the ticked vines block (remember the ticked block is counted by above function as well) + if #vines_in_area < 5 then + spread_neighbors(pos, node, "up") + end + end + + -- TODO: Spread horizontally + end }) - +-- Returns true of the node supports vines +mcl_core.supports_vines = function(nodename) + local def = minetest.registered_nodes[nodename] + -- Rules: 1) walkable 2) full cube + return def.walkable and ((not def.node_box) or def.node_box.type == "regular") +end -- Leaf Decay