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Implement shulker teleportation

This commit is contained in:
cora 2022-09-11 19:40:16 +02:00
parent 4880436625
commit 79f5afe0f6
1 changed files with 80 additions and 1 deletions
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81
mods/ENTITIES/mobs_mc/shulker.lua
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@ -9,8 +9,26 @@ local S = minetest.get_translator("mobs_mc")
--################### SHULKER
--###################
local adjacents = {
vector.new(1,0,0),
vector.new(-1,0,0),
vector.new(0,1,0),
vector.new(0,-1,0),
vector.new(0,0,1),
vector.new(0,0,-1),
}
local function check_spot(pos)
local n = minetest.get_node(pos)
if n.name~="air" then return false end
for _,a in pairs(adjacents) do
local p = vector.add(pos,a)
local pn = minetest.get_node(p)
if minetest.get_item_group(pn.name,"solid") > 0 then return true end
end
return false
end
local pr = PseudoRandom(os.time()*(-334))
-- animation 45-80 is transition between passive and attack stance
mcl_mobs:register_mob("mobs_mc:shulker", {
description = S("Shulker"),
type = "monster",
@ -35,6 +53,8 @@ mcl_mobs:register_mob("mobs_mc:shulker", {
walk_chance = 0,
knock_back = false,
jump = false,
can_despawn = false,
fall_speed = 0,
drops = {
{name = "mcl_mobitems:shulker_shell",
chance = 2,
@ -55,6 +75,7 @@ mcl_mobs:register_mob("mobs_mc:shulker", {
fear_height = 0,
noyaw = true,
do_custom = function(self,dtime)
local pos = self.object:get_pos()
if math.floor(self.object:get_yaw()) ~=0 then
self.object:set_yaw(0)
mcl_mobs:yaw(self, 0, 0, dtime)
@ -68,6 +89,64 @@ mcl_mobs:register_mob("mobs_mc:shulker", {
end
self.path.way = false
self.look_at_players = false
if not check_spot(pos) then
self:teleport(nil)
end
end,
do_punch = function(self, puncher, time_from_last_punch, tool_capabilities, dir, damage)
self:teleport(puncher)
end,
do_teleport = function(self, target)
if target ~= nil then
local target_pos = target:get_pos()
-- Find all solid nodes below air in a 10×10×10 cuboid centered on the target
local nodes = minetest.find_nodes_in_area_under_air(vector.subtract(target_pos, 5), vector.add(target_pos, 5), {"group:solid", "group:cracky", "group:crumbly"})
local telepos
if nodes ~= nil then
if #nodes > 0 then
-- Up to 64 attempts to teleport
for n=1, math.min(64, #nodes) do
local r = pr:next(1, #nodes)
local nodepos = nodes[r]
local tg = vector.offset(nodepos,0,1,0)
if check_spot(tg) then
telepos = tg
node_ok = true
end
end
if telepos then
self.object:set_pos(telepos)
end
end
end
else
local pos = self.object:get_pos()
-- Up to 8 top-level attempts to teleport
for n=1, 8 do
local node_ok = false
-- We need to add (or subtract) different random numbers to each vector component, so it couldn't be done with a nice single vector.add() or .subtract():
local randomCube = vector.new( pos.x + 8*(pr:next(0,16)-8), pos.y + 8*(pr:next(0,16)-8), pos.z + 8*(pr:next(0,16)-8) )
local nodes = minetest.find_nodes_in_area_under_air(vector.subtract(randomCube, 4), vector.add(randomCube, 4), {"group:solid", "group:cracky", "group:crumbly"})
if nodes ~= nil then
if #nodes > 0 then
-- Up to 8 low-level (in total up to 8*8 = 64) attempts to teleport
for n=1, math.min(8, #nodes) do
local r = pr:next(1, #nodes)
local nodepos = nodes[r]
local tg = vector.offset(nodepos,0,1,0)
if check_spot(tg) then
self.object:set_pos(tg)
node_ok = true
break
end
end
end
end
if node_ok then
break
end
end
end
end,
})