VoxeLibre/mods/ENTITIES/mcl_mobs/movement.lua

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local math, vector, minetest, mcl_mobs = math, vector, minetest, mcl_mobs
local mob_class = mcl_mobs.mob_class
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local DEFAULT_FALL_SPEED = -9.81*1.5
local FLOP_HEIGHT = 6
local FLOP_HOR_SPEED = 1.5
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local CHECK_HERD_FREQUENCY = 4
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local PATHFINDING = "gowp"
local node_snow = "mcl_core:snow"
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local mobs_griefing = minetest.settings:get_bool("mobs_griefing") ~= false
local atan2 = math.atan2
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local registered_fallback_node = minetest.registered_nodes[mcl_mobs.fallback_node]
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-- get node but use fallback for nil or unknown
local node_ok = function(pos, fallback)
local node = minetest.get_node_or_nil(pos)
if node and minetest.registered_nodes[node.name] then
return node
end
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if fallback then
return minetest.registered_nodes[fallback]
else
return registered_fallback_node
end
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end
-- Returns true is node can deal damage to self
function mob_class:is_node_dangerous(nodename)
local nn = nodename
if self.lava_damage > 0 then
if minetest.get_item_group(nn, "lava") ~= 0 then
return true
end
end
if self.fire_damage > 0 then
if minetest.get_item_group(nn, "fire") ~= 0 then
return true
end
end
if minetest.registered_nodes[nn] and minetest.registered_nodes[nn].damage_per_second and minetest.registered_nodes[nn].damage_per_second > 0 then
return true
end
return false
end
-- Returns true if node is a water hazard
function mob_class:is_node_waterhazard(nodename)
local nn = nodename
if self.water_damage > 0 then
if minetest.get_item_group(nn, "water") ~= 0 then
return true
end
end
if minetest.registered_nodes[nn] and (minetest.registered_nodes[nn].drowning or 0) > 0 then
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if self.breath_max ~= -1 then
-- check if the mob is water-breathing _and_ the block is water; only return true if neither is the case
-- this will prevent water-breathing mobs to classify water or e.g. sand below them as dangerous
if not self.breathes_in_water and minetest.get_item_group(nn, "water") ~= 0 then
return true
end
end
end
return false
end
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local function raycast_line_of_sight (origin, target)
local raycast = minetest.raycast(origin, target, false, true)
local los_blocked = false
for hitpoint in raycast do
if hitpoint.type == "node" then
--TODO type object could block vision, for example chests
local node = minetest.get_node(minetest.get_pointed_thing_position(hitpoint))
if node.name ~= "air" then
local nodef = minetest.registered_nodes[node.name]
if nodef and nodef.walkable then
los_blocked = true
break
end
end
end
end
return not los_blocked
end
function mob_class:target_visible(origin)
if not origin then return end
if not self.attack then return end
local target_pos = self.attack:get_pos()
if not target_pos then return end
local origin_eye_pos = vector.offset(origin, 0, self.head_eye_height, 0)
--minetest.log("origin: " .. dump(origin))
--minetest.log("origin_eye_pos: " .. dump(origin_eye_pos))
local targ_head_height, targ_feet_height
if self.attack:is_player() then
local cbox = self.object:get_properties().collisionbox
targ_head_height = vector.offset(target_pos, 0, cbox[5], 0)
targ_feet_height = target_pos -- Cbox would put feet under ground which interferes with ray
else
targ_head_height = vector.offset(target_pos, 0, self.collisionbox[5], 0)
targ_feet_height = vector.offset(target_pos, 0, self.collisionbox[2], 0)
end
--minetest.log("start targ_head_height: " .. dump(targ_head_height))
if raycast_line_of_sight (origin_eye_pos, targ_head_height) then
return true
end
--minetest.log("Start targ_feet_height: " .. dump(targ_feet_height))
if raycast_line_of_sight (origin_eye_pos, targ_feet_height) then
return true
end
-- TODO mid way between feet and head
return false
end
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-- check line of sight (BrunoMine)
function mob_class:line_of_sight(pos1, pos2, stepsize)
stepsize = stepsize or 1
local s, pos = minetest.line_of_sight(pos1, pos2, stepsize)
-- normal walking and flying mobs can see you through air
if s == true then
return true
end
-- New pos1 to be analyzed
local npos1 = {x = pos1.x, y = pos1.y, z = pos1.z}
local r, pos = minetest.line_of_sight(npos1, pos2, stepsize)
-- Checks the return
if r == true then return true end
-- Nodename found
local nn = minetest.get_node(pos).name
-- Target Distance (td) to travel
local td = vector.distance(pos1, pos2)
-- Actual Distance (ad) traveled
local ad = 0
-- It continues to advance in the line of sight in search of a real
-- obstruction which counts as 'normal' nodebox.
while minetest.registered_nodes[nn]
and minetest.registered_nodes[nn].walkable == false do
-- Check if you can still move forward
if td < ad + stepsize then
return true -- Reached the target
end
-- Moves the analyzed pos
local d = vector.distance(pos1, pos2)
npos1.x = ((pos2.x - pos1.x) / d * stepsize) + pos1.x
npos1.y = ((pos2.y - pos1.y) / d * stepsize) + pos1.y
npos1.z = ((pos2.z - pos1.z) / d * stepsize) + pos1.z
-- NaN checks
if d == 0
or npos1.x ~= npos1.x
or npos1.y ~= npos1.y
or npos1.z ~= npos1.z then
return false
end
ad = ad + stepsize
-- scan again
r, pos = minetest.line_of_sight(npos1, pos2, stepsize)
if r == true then return true end
-- New Nodename found
nn = minetest.get_node(pos).name
end
return false
end
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function mob_class:can_jump_cliff()
local yaw = self.object:get_yaw()
local pos = self.object:get_pos()
local v = self.object:get_velocity()
local v2 = math.abs(v.x)+math.abs(v.z)*.833
local jump_c_multiplier = 1
if v2/self.walk_velocity/2>1 then
jump_c_multiplier = v2/self.walk_velocity/2
end
-- where is front
local dir_x = -math.sin(yaw) * (self.collisionbox[4] + 0.5)*jump_c_multiplier+0.6
local dir_z = math.cos(yaw) * (self.collisionbox[4] + 0.5)*jump_c_multiplier+0.6
--is there nothing under the block in front? if so jump the gap.
local nodLow = node_ok({
x = pos.x + dir_x*0.6,
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y = pos.y - 0.5,
z = pos.z + dir_z*0.6
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}, "air")
-- next is solid, no need to jump
if minetest.registered_nodes[nodLow.name] and minetest.registered_nodes[nodLow.name].walkable == true then
return false
end
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local nodFar = node_ok({
x = pos.x + dir_x*1.6,
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y = pos.y - 0.5,
z = pos.z + dir_z*1.6
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}, "air")
local nodFar2 = node_ok({
x = pos.x + dir_x*2.5,
y = pos.y - 0.5,
z = pos.z + dir_z*2.5
}, "air")
-- TODO: also check there is air above these nodes?
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-- some place to land on
if (minetest.registered_nodes[nodFar.name] and minetest.registered_nodes[nodFar.name].walkable == true)
or (minetest.registered_nodes[nodFar2.name] and minetest.registered_nodes[nodFar2.name].walkable == true)
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then
--disable fear height while we make our jump
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self._jumping_cliff = true
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-- minetest.log("Jumping cliff: " .. self.name .. " nodes " .. nodLow.name .. " - " .. nodFar.name .. " - " .. nodFar2.name)
minetest.after(.01, function()
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if self and self.object then
self._jumping_cliff = false
end
end)
return true
else
self._jumping_cliff = false
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return false
end
end
-- is mob facing a cliff or danger
function mob_class:is_at_cliff_or_danger()
if self.fear_height == 0 or self._jumping_cliff or self._can_jump_cliff or not self.object:get_luaentity() then -- 0 for no falling protection!
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return false
end
if self.fly then -- also avoids checking fish
return false
end
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local yaw = self.object:get_yaw()
local dir_x = -math.sin(yaw) * (self.collisionbox[4] + 0.25)
local dir_z = math.cos(yaw) * (self.collisionbox[4] + 0.25)
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local pos = self.object:get_pos()
local ypos = pos.y + self.collisionbox[2] -- just above floor
local free_fall, blocker = minetest.line_of_sight(
vector.new(pos.x + dir_x, ypos, pos.z + dir_z),
vector.new(pos.x + dir_x, ypos - self.fear_height, pos.z + dir_z))
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if free_fall then
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if math.random() < 0.98 then -- sometimes mobs make mistakes
return true
end
-- minetest.log(self.name.." takes a leap of faith.")
return false
end
-- avoid routes where we cannot get back, be reluctant to drop
local height = ypos + 0.5 - blocker.y
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if self.runaway_timer == 0 and height > 1.25 and math.random() < (self.jump_height or 4) / 4 / height / height then
--minetest.log(self.name.." avoiding drop of "..height.." chance "..((self.jump_height or 4) / 4 / height / height))
return
end
local bnode = minetest.get_node(blocker)
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-- minetest.log("At cliff: " .. self.name .. " below " .. bnode.name)
if self:is_node_dangerous(bnode.name) or self:is_node_waterhazard(bnode.name) then
return bnode.name
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end
return false
end
-- copy the 'mob facing cliff_or_danger check' from above, and rework to avoid water
function mob_class:is_at_water_danger()
if self.water_damage == 0 and self.breath_max == -1 then
--minetest.log("Do not need a water check for: " .. self.name)
return false
end
if self.fly then -- also avoids checking fish
return false
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end
local in_water_danger = self:is_node_waterhazard(self.standing_in) or self:is_node_waterhazard(self.standing_on)
if in_water_danger then return false end -- If you're in trouble, do not stop
if not self.object:get_luaentity() or self._jumping_cliff or self._can_jump_cliff then
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return false
end
local yaw = self.object:get_yaw()
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local pos = self.object:get_pos()
if not yaw or not pos then
return false
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end
local dir_x = -math.sin(yaw) * (self.collisionbox[4] + 0.25)
local dir_z = math.cos(yaw) * (self.collisionbox[4] + 0.25)
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local ypos = pos.y + self.collisionbox[2] -- just above floor
local los, blocker = minetest.line_of_sight(
vector.new(pos.x + dir_x, ypos, pos.z + dir_z),
vector.new(pos.x + dir_x, ypos - 3, pos.z + dir_z))
if not los then
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local bnode = minetest.get_node(blocker)
local waterdanger = self:is_node_waterhazard(bnode.name)
if waterdanger and not in_water_danger then
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return true
end
end
return false
end
function mob_class:env_danger_movement_checks(player_in_active_range)
if not player_in_active_range then return end
if self.state == PATHFINDING
or self.state == "attack"
or self.state == "stand"
or self.state == "runaway" then
return
end
if self:is_at_water_danger() then
--minetest.log("At water danger for mob, stop?: " .. self.name)
if math.random() <= 0.8 then
if self.state ~= "stand" then
self:set_velocity(0)
self.state = "stand"
self:set_animation( "stand")
end
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local yaw = self.object:get_yaw() or 0
yaw = yaw + math.random(-0.5, 0.5)
self:set_yaw(yaw, 8)
return
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end
end
--[[if self:is_at_cliff_or_danger(can_jump_cliff) then
if self.state ~= "stand" then
self:set_velocity(0)
self.state = "stand"
self:set_animation( "stand")
end
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local yaw = self.object:get_yaw() or 0
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self:set_yaw( yaw + 0.78, 8)
end--]]
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end
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-- jump if facing a solid node (not fences or gates)
function mob_class:do_jump()
if not self.jump
or self.jump_height == 0
or self.fly
or self.order == "stand" then
return false
end
self.facing_fence = false
-- something stopping us while moving?
if self.state ~= "stand"
and self:get_velocity() > 0.5
and self.object:get_velocity().y ~= 0 then
return false
end
local pos = self.object:get_pos()
local yaw = self.object:get_yaw()
-- what is mob standing on?
pos.y = pos.y + self.collisionbox[2] - 0.2
local nod = node_ok(pos)
if minetest.registered_nodes[nod.name].walkable == false then
return false
end
local v = self.object:get_velocity()
local v2 = math.abs(v.x)+math.abs(v.z)*.833
local jump_c_multiplier = 1
if v2/self.walk_velocity/2>1 then
jump_c_multiplier = v2/self.walk_velocity/2
end
local yaw_dir = minetest.yaw_to_dir(self.object:get_yaw())
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-- where is front
local dir_x = -math.sin(yaw) * (self.collisionbox[4] + 0.5)*jump_c_multiplier+yaw_dir.x
local dir_z = math.cos(yaw) * (self.collisionbox[4] + 0.5)*jump_c_multiplier+yaw_dir.z
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-- what is in front of mob?
nod = node_ok({
x = pos.x + dir_x,
y = pos.y + 0.5,
z = pos.z + dir_z
})
-- this is used to detect if there's a block on top of the block in front of the mob.
-- If there is, there is no point in jumping as we won't manage.
local nodTop = node_ok({
x = pos.x + dir_x,
y = pos.y + 1.5,
z = pos.z + dir_z
}, "air")
-- we don't attempt to jump if there's a stack of blocks blocking
if minetest.registered_nodes[nodTop.name].walkable == true and not (self.attack and self.state == "attack") then
return false
end
-- thin blocks that do not need to be jumped
if nod.name == node_snow then
return false
end
local ndef = minetest.registered_nodes[nod.name]
if self.walk_chance == 0 or ndef and ndef.walkable or self._can_jump_cliff then
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if minetest.get_item_group(nod.name, "fence") == 0
and minetest.get_item_group(nod.name, "fence_gate") == 0
and minetest.get_item_group(nod.name, "wall") == 0 then
local v = self.object:get_velocity()
v.y = self.jump_height + 0.1 * 3
if self._can_jump_cliff then
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v=vector.multiply(v, vector.new(2.8,1,2.8))
end
self:set_animation( "jump") -- only when defined
self.object:set_velocity(v)
-- when in air move forward
minetest.after(0.3, function(self, v)
if (not self.object) or (not self.object:get_luaentity()) or (self.state == "die") then
return
end
self.object:set_acceleration({
x = v.x * 2,
y = DEFAULT_FALL_SPEED,
z = v.z * 2,
})
end, self, v)
if self.jump_sound_cooloff <= 0 then
self:mob_sound("jump")
self.jump_sound_cooloff = 0.5
end
else
self.facing_fence = true
end
-- if we jumped against a block/wall 4 times then turn
if self.object:get_velocity().x ~= 0
and self.object:get_velocity().z ~= 0 then
self.jump_count = (self.jump_count or 0) + 1
if self.jump_count == 4 then
local yaw = self.object:get_yaw() or 0
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self:set_yaw( yaw + 1.35, 8)
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self.jump_count = 0
end
end
return true
end
return false
end
-- should mob follow what I'm holding ?
function mob_class:follow_holding(clicker)
if self.nofollow then return false end
if mcl_mobs.invis[clicker:get_player_name()] then
return false
end
local item = clicker:get_wielded_item()
local t = type(self.follow)
-- single item
if t == "string"
and item:get_name() == self.follow then
return true
-- multiple items
elseif t == "table" then
for no = 1, #self.follow do
if self.follow[no] == item:get_name() then
return true
end
end
end
return false
end
-- find and replace what mob is looking for (grass, wheat etc.)
function mob_class:replace_node(pos)
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if not self.replace_rate
or not self.replace_what
or self.child == true
or self.object:get_velocity().y ~= 0
or math.random(1, self.replace_rate) > 1 then
return
end
local what, with, y_offset
if type(self.replace_what[1]) == "table" then
local num = math.random(#self.replace_what)
what = self.replace_what[num][1] or ""
with = self.replace_what[num][2] or ""
y_offset = self.replace_what[num][3] or 0
else
what = self.replace_what
with = self.replace_with or ""
y_offset = self.replace_offset or 0
end
pos.y = pos.y + y_offset
local node = minetest.get_node(pos)
if node.name == what then
local oldnode = {name = what, param2 = node.param2}
local newnode = {name = with, param2 = node.param2}
local on_replace_return = false
if self.on_replace then
on_replace_return = self.on_replace(self, pos, oldnode, newnode)
end
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if on_replace_return ~= false then
if mobs_griefing then
minetest.after(self.replace_delay, function()
if self and self.object and self.object:get_velocity() and self.health > 0 then
minetest.set_node(pos, newnode)
end
end)
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end
end
end
end
-- specific runaway
local specific_runaway = function(list, what)
if type(list) ~= "table" then
list = {}
end
-- no list so do not run
if list == nil then
return false
end
-- found entity on list to attack?
for no = 1, #list do
if list[no] == what then
return true
end
end
return false
end
-- find someone to runaway from
function mob_class:check_runaway_from()
if not self.runaway_from and self.state ~= "flop" then
return
end
local s = self.object:get_pos()
local p, sp, dist
local player, obj, min_player
local type, name = "", ""
local min_dist = self.view_range + 1
local objs = minetest.get_objects_inside_radius(s, self.view_range)
for n = 1, #objs do
if objs[n]:is_player() then
if mcl_mobs.invis[ objs[n]:get_player_name() ]
or self.owner == objs[n]:get_player_name()
or (not self:object_in_range(objs[n])) then
type = ""
else
player = objs[n]
type = "player"
name = "player"
end
else
obj = objs[n]:get_luaentity()
if obj then
player = obj.object
type = obj.type
name = obj.name or ""
end
end
-- find specific mob to runaway from
if name ~= "" and name ~= self.name
and specific_runaway(self.runaway_from, name) then
p = player:get_pos()
sp = s
-- aim higher to make looking up hills more realistic
p.y = p.y + 1
sp.y = sp.y + 1
dist = vector.distance(p, s)
-- choose closest player/mpb to runaway from
if dist < min_dist
and self:line_of_sight(sp, p, 2) == true then
min_dist = dist
min_player = player
end
end
end
if min_player then
local lp = player:get_pos()
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local yaw = atan2(s.x - lp.x, s.z - lp.z) - self.rotate -- away from player
self:set_yaw( yaw, 4)
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self.state = "runaway"
self.runaway_timer = 3
self.following = nil
end
end
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-- follow player if owner or holding item
function mob_class:check_follow()
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-- find player to follow
if (self.follow ~= "" or self.order == "follow") and not self.following
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and self.state ~= "attack"
and self.order ~= "sit"
and self.state ~= "runaway" then
local s = self.object:get_pos()
local players = minetest.get_connected_players()
for n = 1, #players do
if (self:object_in_range(players[n])) and not mcl_mobs.invis[ players[n]:get_player_name() ] then
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self.following = players[n]
break
end
end
end
if self.type == "npc" and self.order == "follow"
and self.state ~= "attack" and self.order ~= "sit" and self.owner ~= "" then
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if self.following and self.owner and self.owner ~= self.following:get_player_name() then
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self.following = nil
end
else
-- stop following player if not holding specific item,
-- mob is horny, fleeing or attacking
if self.following and self.following:is_player()
and (self:follow_holding(self.following) == false or self.horny or self.state == "runaway") then
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self.following = nil
end
end
-- follow that thing
if self.following then
local s = self.object:get_pos()
local p
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if self.following:is_player() then
p = self.following:get_pos()
elseif self.following.object then
p = self.following.object:get_pos()
end
if p then
local dist = vector.distance(p, s)
if (not self:object_in_range(self.following)) then
self.following = nil
else
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local yaw = atan2(p.x - s.x, p.z - s.z) - self.rotate
self:set_yaw(yaw, 2.35)
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-- anyone but standing npc's can move along
if dist > 3 and self.order ~= "stand" then
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self:set_velocity(self.follow_velocity)
if self.walk_chance ~= 0 then
self:set_animation( "run")
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else
self:set_animation( "stand")
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end
else
self:set_velocity(0)
self:set_animation( "stand")
end
return
end
end
end
end
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function mob_class:flop()
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-- swimmers flop when out of their element, and swim again when back in
if self.fly then
local s = self.object:get_pos()
if self:flight_check(s) == false then
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self.state = "flop"
self.object:set_acceleration({x = 0, y = DEFAULT_FALL_SPEED, z = 0})
local p = self.object:get_pos()
local sdef = minetest.registered_nodes[node_ok(vector.add(p, vector.new(0,self.collisionbox[2]-0.2,0))).name]
-- Flop on ground
if sdef and sdef.walkable then
if self.object:get_velocity().y < 0.1 then
self:mob_sound("flop")
self.object:set_velocity({
x = (math.random()-0.5) * 2 * FLOP_HOR_SPEED,
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y = FLOP_HEIGHT,
z = (math.random()-0.5) * 2 * FLOP_HOR_SPEED,
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})
end
end
self:set_animation( "stand", true)
return
elseif self.state == "flop" then
self.state = "stand"
self.object:set_acceleration(vector.zero())
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self:set_velocity(0)
end
end
end
function mob_class:go_to_pos(b)
if not self then return end
local s=self.object:get_pos()
if not b then
--self.state = "stand"
return end
if vector.distance(b,s) < 1 then
--self:set_velocity(0)
return true
end
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local yaw = atan2(b.x - s.x, b.z - s.z) - self.rotate
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self.object:set_yaw(yaw)
self:set_velocity(self.follow_velocity)
self:set_animation("walk")
end
local check_herd_timer = 0
function mob_class:check_herd(dtime)
local pos = self.object:get_pos()
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if not pos or self.state == "attack" then return end
-- Does any mob not move in group. Weird check for something not set?
if self.move_in_group == false then return end
check_herd_timer = check_herd_timer + dtime
if check_herd_timer < CHECK_HERD_FREQUENCY then return end
check_herd_timer = 0
for _,o in pairs(minetest.get_objects_inside_radius(pos,self.view_range)) do
local l = o:get_luaentity()
local p,y
if l and l.is_mob and l.name == self.name then
if self.horny and l.horny then
p = l.object:get_pos()
else
y = o:get_yaw()
end
if p then
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self:go_to_pos(p)
elseif y then
self:set_yaw(y)
end
end
end
end
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function mob_class:teleport(target)
if self.do_teleport then
if self.do_teleport(self, target) == false then
return
end
end
end
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function mob_class:do_states_walk()
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local yaw = self.object:get_yaw() or 0
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local s = self.object:get_pos()
local lp = nil
-- is there something I need to avoid?
if (self.water_damage > 0
and self.lava_damage > 0)
or self.breath_max ~= -1 then
lp = minetest.find_node_near(s, 1, {"group:water", "group:lava"})
elseif self.water_damage > 0 then
lp = minetest.find_node_near(s, 1, {"group:water"})
elseif self.lava_damage > 0 then
lp = minetest.find_node_near(s, 1, {"group:lava"})
elseif self.fire_damage > 0 then
lp = minetest.find_node_near(s, 1, {"group:fire"})
end
local is_in_danger = false
if lp then
-- If mob in or on dangerous block, look for land
if self:is_node_dangerous(self.standing_in) or self:is_node_waterhazard(self.standing_in)
or not self.fly and (self:is_node_dangerous(self.standing_on) or self:is_node_waterhazard(self.standing_on)) then
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is_in_danger = true
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-- If mob in or on dangerous block, look for land
if is_in_danger then
-- Better way to find shore - copied from upstream
lp = minetest.find_nodes_in_area_under_air(
{x = s.x - 5, y = s.y - 0.5, z = s.z - 5},
{x = s.x + 5, y = s.y + 1, z = s.z + 5},
{"group:solid"})
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lp = #lp > 0 and lp[math.random(#lp)]
-- did we find land?
if lp then
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-- minetest.log(self.name .. " heading to land ".. tostring(minetest.get_node(lp).name or nil))
yaw = atan2(lp.x - s.x, lp.z - s.z) - self.rotate
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-- look towards land and move in that direction
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self:set_yaw(yaw, 6)
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self:set_velocity(self.walk_velocity)
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end
end
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-- A danger is near but mob is not inside
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else
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-- Randomly turn
if math.random(1, 100) <= 30 then
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yaw = yaw + math.random(-0.5, 0.5)
self:set_yaw(yaw, 8)
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end
end
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-- otherwise randomly turn
elseif math.random(1, 100) <= 30 then
yaw = yaw + math.random() - 0.5
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yaw = self:set_yaw(yaw, 8)
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end
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-- stand for great fall or danger or fence in front
local cliff_or_danger = is_in_danger or self:is_at_cliff_or_danger()
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if self.facing_fence == true
or cliff_or_danger
or math.random(1, 100) <= 30 then
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-- if cliff_or_danger then
-- minetest.log(self.name .. " turning away from danger "..tostring(self:is_at_cliff_or_danger() or "nil"))
-- end
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self:set_velocity(0)
self.state = "stand"
self:set_animation( "stand")
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yaw = yaw + 0.78
self:set_yaw( yaw, 8)
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else
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self:set_velocity(self.walk_velocity)
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if self:flight_check()
and self.animation
and self.animation.fly_start
and self.animation.fly_end then
self:set_animation( "fly")
else
self:set_animation( "walk")
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end
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end
end
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function mob_class:do_states_stand(player_in_active_range)
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local yaw = self.object:get_yaw() or 0
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if math.random(1, 4) == 1 then
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local s = self.object:get_pos()
local objs = minetest.get_objects_inside_radius(s, 3)
local lp
for n = 1, #objs do
if objs[n]:is_player() then
lp = objs[n]:get_pos()
break
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end
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end
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-- look at any players nearby, otherwise turn randomly
if lp and self.look_at_players then
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yaw = atan2(lp.x - s.x, lp.z - s.z) - self.rotate
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else
yaw = yaw + math.random() - 0.5
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end
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self:set_yaw( yaw, 8)
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end
if self.order == "sit" then
self:set_animation( "sit")
self:set_velocity(0)
else
self:set_animation( "stand")
self:set_velocity(0)
end
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-- npc's ordered to stand stay standing
if self.order == "stand" or self.order == "sleep" or self.order == "work" then
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else
if player_in_active_range then
if self.walk_chance ~= 0
and self.facing_fence ~= true
and math.random(1, 100) <= self.walk_chance
and not self:is_at_cliff_or_danger() then
self:set_velocity(self.walk_velocity)
self.state = "walk"
self:set_animation( "walk")
end
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end
end
end
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function mob_class:do_states_runaway()
local yaw = self.object:get_yaw() or 0
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self.runaway_timer = self.runaway_timer + 1
-- stop after 5 seconds or when at cliff
if self.runaway_timer > 5
or self:is_at_cliff_or_danger() then
self.runaway_timer = 0
self:set_velocity(0)
self.state = "stand"
self:set_animation( "stand")
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self:set_yaw( yaw + 0.78, 8)
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else
self:set_velocity( self.run_velocity)
self:set_animation( "run")
end
end
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function mob_class:check_smooth_rotation(dtime)
-- smooth rotation by ThomasMonroe314
if self._turn_to then
self:set_yaw( self._turn_to, .1)
end
if self.delay and self.delay > 0 then
local yaw = self.object:get_yaw() or 0
if self.delay == 1 then
yaw = self.target_yaw
else
local dif = math.abs(yaw - self.target_yaw)
if yaw > self.target_yaw then
if dif > math.pi then
dif = 2 * math.pi - dif -- need to add
yaw = yaw + dif / self.delay
else
yaw = yaw - dif / self.delay -- need to subtract
end
elseif yaw < self.target_yaw then
if dif >math.pi then
dif = 2 * math.pi - dif
yaw = yaw - dif / self.delay -- need to subtract
else
yaw = yaw + dif / self.delay -- need to add
end
end
if yaw > (math.pi * 2) then yaw = yaw - (math.pi * 2) end
if yaw < 0 then yaw = yaw + (math.pi * 2) end
end
self.delay = self.delay - 1
if self.shaking then
yaw = yaw + (math.random() * 2 - 1) * 5 * dtime
end
self.object:set_yaw(yaw)
--self:update_roll()
end
-- end rotation
end