From 647524f503a15e58060fe7a6555670c5fd28d559 Mon Sep 17 00:00:00 2001 From: Wuzzy Date: Tue, 23 Jan 2018 06:40:07 +0100 Subject: [PATCH] Rework the overly weird vine growth algorithm --- mods/ITEMS/mcl_core/functions.lua | 97 ++++++++++++++----------------- 1 file changed, 45 insertions(+), 52 deletions(-) diff --git a/mods/ITEMS/mcl_core/functions.lua b/mods/ITEMS/mcl_core/functions.lua index 880ae642..42d7c899 100644 --- a/mods/ITEMS/mcl_core/functions.lua +++ b/mods/ITEMS/mcl_core/functions.lua @@ -942,75 +942,68 @@ minetest.register_abm({ return end - 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 - - -- 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}) + local spread_down = function(origin, target, dir, node) + if math.random(1, 2) == 1 then + if minetest.get_node(target).name == "air" then + minetest.add_node(target, {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) + -- Add vines above pos if it is backed up + local spread_up = function(origin, target, dir, node) + local vines_in_area = minetest.find_nodes_in_area({x=origin.x-4, y=origin.y-1, z=origin.z-4}, {x=origin.x+4, y=origin.y+1, z=origin.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 + if math.random(1, 2) == 1 then + if minetest.get_node(target).name == "air" then + local backup_dir = minetest.wallmounted_to_dir(node.param2) + local backup = vector.subtract(target, backup_dir) + local backupnodename = minetest.get_node(backup).name + + -- Check if the block above is supported + if mcl_core.supports_vines(backupnodename) then + minetest.add_node(target, {name = "mcl_core:vine", param2 = node.param2}) 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") + local spread_horizontal = function(origin, target, dir, node) + local vines_in_area = minetest.find_nodes_in_area({x=origin.x-4, y=origin.y-1, z=origin.z-4}, {x=origin.x+4, y=origin.y+1, z=origin.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") + -- Spread horizontally + local backup_dir = minetest.wallmounted_to_dir(node.param2) + if not vector.equals(backup_dir, dir) then + local target_node = minetest.get_node(target) + if target_node.name == "air" then + local backup = vector.add(target, backup_dir) + local backupnodename = minetest.get_node(backup).name + if mcl_core.supports_vines(backupnodename) then + minetest.add_node(target, {name = "mcl_core:vine", param2 = node.param2}) + end + end + end end end - -- TODO: Spread horizontally + local directions = { + { { x= 1, y= 0, z= 0 }, spread_horizontal }, + { { x=-1, y= 0, z= 0 }, spread_horizontal }, + { { x= 0, y= 1, z= 0 }, spread_up }, + { { x= 0, y=-1, z= 0 }, spread_down }, + { { x= 0, y= 0, z= 1 }, spread_horizontal }, + { { x= 0, y= 0, z=-1 }, spread_horizontal }, + } + local d = math.random(1, #directions) + local dir = directions[d][1] + local spread = directions[d][2] + + spread(pos, vector.add(pos, dir), dir, node) end })