forked from VoxeLibre/VoxeLibre
Rework the overly weird vine growth algorithm
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Wuzzy
parent
0405b2aa2c
commit
647524f503
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@ -942,75 +942,68 @@ minetest.register_abm({
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return
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return
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end
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end
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local neighbor_offsets = {
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{ x=1, y=0, z=0 },
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{ x=-1, y=0, z=0 },
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{ x=0, y=0, z=1 },
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{ x=0, y=0, z=-1 },
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}
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-- Add vines below pos (if empty)
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-- Add vines below pos (if empty)
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local spread_down = function(pos, node)
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local spread_down = function(origin, target, dir, node)
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local down = vector.add(pos, {x=0, y=-1, z=0})
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if math.random(1, 2) == 1 then
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if minetest.get_node(down).name == "air" then
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if minetest.get_node(target).name == "air" then
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minetest.add_node(down, {name = "mcl_core:vine", param2 = node.param2})
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minetest.add_node(target, {name = "mcl_core:vine", param2 = node.param2})
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end
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end
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end
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end
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end
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-- Add vines above pos if it is backed up
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-- Add vines above pos if it is backed up
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local spread_up = function(pos, node)
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local spread_up = function(origin, target, dir, node)
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local up = vector.add(pos, {x=0, y=1, z=0})
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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")
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if minetest.get_node(up).name == "air" then
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-- Less then 4 vines blocks around the ticked vines block (remember the ticked block is counted by above function as well)
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local backup_dir = minetest.facedir_to_dir(node.param2)
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if #vines_in_area < 5 then
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local backup = vector.add(up, backup_dir)
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if math.random(1, 2) == 1 then
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if minetest.get_node(target).name == "air" then
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local backup_dir = minetest.wallmounted_to_dir(node.param2)
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local backup = vector.subtract(target, backup_dir)
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local backupnodename = minetest.get_node(backup).name
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local backupnodename = minetest.get_node(backup).name
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-- Check if the block above is supported
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-- Check if the block above is supported
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if mcl_core.supports_vines(backupnodename) then
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if mcl_core.supports_vines(backupnodename) then
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minetest.add_node(up, {name = "mcl_core:vine", param2 = node.param2})
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minetest.add_node(target, {name = "mcl_core:vine", param2 = node.param2})
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end
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end
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end
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-- Try to spread vines from the 4 horizontal neighbors
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local spread_neighbors = function(pos, node, spread_dir)
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for n=1, #neighbor_offsets do
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if math.random(1,2) == 1 then
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local neighbor = vector.add(pos, neighbor_offsets[n])
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local neighbornode = minetest.get_node(neighbor)
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if neighbornode.name == "mcl_core:vine" then
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if spread_dir == "up" then
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spread_up(neighbor, neighbornode)
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elseif spread_dir == "down" then
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spread_down(neighbor, neighbornode)
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end
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end
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end
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end
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end
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end
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end
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end
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end
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end
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-- Spread down
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local spread_horizontal = function(origin, target, dir, node)
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local down = {x=pos.x, y=pos.y-1, z=pos.z}
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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")
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local down_node = minetest.get_node(down)
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if down_node.name == "air" then
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spread_neighbors(pos, node, "down")
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elseif down_node.name == "mcl_core:vine" then
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spread_neighbors(down, down_node, "down")
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end
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-- Spread up
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local up = {x=pos.x, y=pos.y+1, z=pos.z}
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local up_node = minetest.get_node(up)
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if up_node.name == "air" then
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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")
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-- Less then 4 vines blocks around the ticked vines block (remember the ticked block is counted by above function as well)
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-- Less then 4 vines blocks around the ticked vines block (remember the ticked block is counted by above function as well)
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if #vines_in_area < 5 then
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if #vines_in_area < 5 then
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spread_neighbors(pos, node, "up")
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-- Spread horizontally
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local backup_dir = minetest.wallmounted_to_dir(node.param2)
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if not vector.equals(backup_dir, dir) then
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local target_node = minetest.get_node(target)
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if target_node.name == "air" then
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local backup = vector.add(target, backup_dir)
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local backupnodename = minetest.get_node(backup).name
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if mcl_core.supports_vines(backupnodename) then
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minetest.add_node(target, {name = "mcl_core:vine", param2 = node.param2})
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end
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end
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end
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end
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end
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end
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end
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-- TODO: Spread horizontally
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local directions = {
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{ { x= 1, y= 0, z= 0 }, spread_horizontal },
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{ { x=-1, y= 0, z= 0 }, spread_horizontal },
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{ { x= 0, y= 1, z= 0 }, spread_up },
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{ { x= 0, y=-1, z= 0 }, spread_down },
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{ { x= 0, y= 0, z= 1 }, spread_horizontal },
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{ { x= 0, y= 0, z=-1 }, spread_horizontal },
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}
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local d = math.random(1, #directions)
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local dir = directions[d][1]
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local spread = directions[d][2]
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spread(pos, vector.add(pos, dir), dir, node)
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end
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end
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})
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})
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