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New vines growth algorithm (WIP)

This commit is contained in:
Wuzzy 2017-05-26 21:25:25 +02:00
parent 2b558e0b54
commit bf9c990760
1 changed files with 78 additions and 8 deletions

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@ -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