forked from VoxeLibre/VoxeLibre
66 lines
2.3 KiB
Lua
66 lines
2.3 KiB
Lua
local pr = PseudoRandom(os.time()*5)
|
||
|
||
local offsets = {}
|
||
for x=-2, 2 do
|
||
for z=-2, 2 do
|
||
table.insert(offsets, {x=x, y=0, z=z})
|
||
end
|
||
end
|
||
|
||
--[[ Periodically check and teleport mob to owner if not sitting (order ~= "sit") and
|
||
the owner is too far away. To be used with do_custom. Note: Optimized for mobs smaller than 1×1×1.
|
||
Larger mobs might have space problems after teleportation.
|
||
|
||
* dist: Minimum required distance from owner to teleport. Default: 12
|
||
* teleport_check_interval: Optional. Interval in seconds to check the mob teleportation. Default: 4 ]]
|
||
mobs_mc.make_owner_teleport_function = function(dist, teleport_check_interval)
|
||
return function(self, dtime)
|
||
-- No teleportation if no owner or if sitting
|
||
if not self.owner or self.order == "sit" then
|
||
return
|
||
end
|
||
if not teleport_check_interval then
|
||
teleport_check_interval = 4
|
||
end
|
||
if not dist then
|
||
dist = 12
|
||
end
|
||
if self._teleport_timer == nil then
|
||
self._teleport_timer = teleport_check_interval
|
||
return
|
||
end
|
||
self._teleport_timer = self._teleport_timer - dtime
|
||
if self._teleport_timer <= 0 then
|
||
self._teleport_timer = teleport_check_interval
|
||
local mob_pos = self.object:get_pos()
|
||
local owner = minetest.get_player_by_name(self.owner)
|
||
if not owner then
|
||
-- No owner found, no teleportation
|
||
return
|
||
end
|
||
local owner_pos = owner:get_pos()
|
||
local dist_from_owner = vector.distance(owner_pos, mob_pos)
|
||
if dist_from_owner > dist then
|
||
-- Check for nodes below air in a 5×1×5 area around the owner position
|
||
local check_offsets = table.copy(offsets)
|
||
-- Attempt to place mob near player. Must be placed on walkable node below a non-walkable one. Place inside that air node.
|
||
while #check_offsets > 0 do
|
||
local r = pr:next(1, #check_offsets)
|
||
local telepos = vector.add(owner_pos, check_offsets[r])
|
||
local telepos_below = {x=telepos.x, y=telepos.y-1, z=telepos.z}
|
||
table.remove(check_offsets, r)
|
||
-- Long story short, spawn on a platform
|
||
local trynode = minetest.registered_nodes[minetest.get_node(telepos).name]
|
||
local trybelownode = minetest.registered_nodes[minetest.get_node(telepos_below).name]
|
||
if trynode and not trynode.walkable and
|
||
trybelownode and trybelownode.walkable then
|
||
-- Correct position found! Let's teleport.
|
||
self.object:set_pos(telepos)
|
||
return
|
||
end
|
||
end
|
||
end
|
||
end
|
||
end
|
||
end
|