VoxeLibre/mods/ENTITIES/mcl_mobs/combat.lua

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2022-11-10 15:28:51 +01:00
local math, vector, minetest, mcl_mobs = math, vector, minetest, mcl_mobs
local mob_class = mcl_mobs.mob_class
-- pathfinding settings
local enable_pathfinding = true
local stuck_timeout = 3 -- how long before mob gets stuck in place and starts searching
local stuck_path_timeout = 10 -- how long will mob follow path before giving up
-- attack player/mob
function mob_class:do_attack(player)
if self.state == "attack" or self.state == "die" then
return
end
self.attack = player
self.state = "attack"
-- TODO: Implement war_cry sound without being annoying
--if random(0, 100) < 90 then
--self:mob_sound("war_cry", true)
--end
end
-- blast damage to entities nearby
local function entity_physics(pos,radius)
radius = radius * 2
local objs = minetest.get_objects_inside_radius(pos, radius)
local obj_pos, dist
for n = 1, #objs do
obj_pos = objs[n]:get_pos()
dist = vector.distance(pos, obj_pos)
if dist < 1 then dist = 1 end
local damage = math.floor((4 / dist) * radius)
local ent = objs[n]:get_luaentity()
-- punches work on entities AND players
objs[n]:punch(objs[n], 1.0, {
full_punch_interval = 1.0,
damage_groups = {fleshy = damage},
}, pos)
end
end
function mob_class:entity_physics(self,pos,radius) return entity_physics(pos,radius) end
local los_switcher = false
local height_switcher = false
-- path finding and smart mob routine by rnd, line_of_sight and other edits by Elkien3
function mob_class:smart_mobs(s, p, dist, dtime)
local s1 = self.path.lastpos
local target_pos = self.attack:get_pos()
-- is it becoming stuck?
if math.abs(s1.x - s.x) + math.abs(s1.z - s.z) < .5 then
self.path.stuck_timer = self.path.stuck_timer + dtime
else
self.path.stuck_timer = 0
end
self.path.lastpos = {x = s.x, y = s.y, z = s.z}
local use_pathfind = false
local has_lineofsight = minetest.line_of_sight(
{x = s.x, y = (s.y) + .5, z = s.z},
{x = target_pos.x, y = (target_pos.y) + 1.5, z = target_pos.z}, .2)
-- im stuck, search for path
if not has_lineofsight then
if los_switcher == true then
use_pathfind = true
los_switcher = false
end -- cannot see target!
else
if los_switcher == false then
los_switcher = true
use_pathfind = false
minetest.after(1, function(self)
if not self.object:get_luaentity() then
return
end
if has_lineofsight then self.path.following = false end
end, self)
end -- can see target!
end
if (self.path.stuck_timer > stuck_timeout and not self.path.following) then
use_pathfind = true
self.path.stuck_timer = 0
minetest.after(1, function(self)
if not self.object:get_luaentity() then
return
end
if has_lineofsight then self.path.following = false end
end, self)
end
if (self.path.stuck_timer > stuck_path_timeout and self.path.following) then
use_pathfind = true
self.path.stuck_timer = 0
minetest.after(1, function(self)
if not self.object:get_luaentity() then
return
end
if has_lineofsight then self.path.following = false end
end, self)
end
if math.abs(vector.subtract(s,target_pos).y) > self.stepheight then
if height_switcher then
use_pathfind = true
height_switcher = false
end
else
if not height_switcher then
use_pathfind = false
height_switcher = true
end
end
if use_pathfind then
-- lets try find a path, first take care of positions
-- since pathfinder is very sensitive
local sheight = self.collisionbox[5] - self.collisionbox[2]
-- round position to center of node to avoid stuck in walls
-- also adjust height for player models!
s.x = math.floor(s.x + 0.5)
s.z = math.floor(s.z + 0.5)
local ssight, sground = minetest.line_of_sight(s, {
x = s.x, y = s.y - 4, z = s.z}, 1)
-- determine node above ground
if not ssight then
s.y = sground.y + 1
end
local p1 = self.attack:get_pos()
p1.x = math.floor(p1.x + 0.5)
p1.y = math.floor(p1.y + 0.5)
p1.z = math.floor(p1.z + 0.5)
local dropheight = 12
if self.fear_height ~= 0 then dropheight = self.fear_height end
local jumpheight = 0
if self.jump and self.jump_height >= 4 then
jumpheight = math.min(math.ceil(self.jump_height / 4), 4)
elseif self.stepheight > 0.5 then
jumpheight = 1
end
self.path.way = minetest.find_path(s, p1, 16, jumpheight, dropheight, "A*_noprefetch")
self.state = ""
do_attack(self, self.attack)
-- no path found, try something else
if not self.path.way then
self.path.following = false
-- lets make way by digging/building if not accessible
if self.pathfinding == 2 and mobs_griefing then
-- is player higher than mob?
if s.y < p1.y then
-- build upwards
if not minetest.is_protected(s, "") then
local ndef1 = minetest.registered_nodes[self.standing_in]
if ndef1 and (ndef1.buildable_to or ndef1.groups.liquid) then
minetest.set_node(s, {name = mcl_mobs.fallback_node})
end
end
local sheight = math.ceil(self.collisionbox[5]) + 1
-- assume mob is 2 blocks high so it digs above its head
s.y = s.y + sheight
-- remove one block above to make room to jump
if not minetest.is_protected(s, "") then
local node1 = node_ok(s, "air").name
local ndef1 = minetest.registered_nodes[node1]
if node1 ~= "air"
and node1 ~= "ignore"
and ndef1
and not ndef1.groups.level
and not ndef1.groups.unbreakable
and not ndef1.groups.liquid then
minetest.set_node(s, {name = "air"})
minetest.add_item(s, ItemStack(node1))
end
end
s.y = s.y - sheight
self.object:set_pos({x = s.x, y = s.y + 2, z = s.z})
else -- dig 2 blocks to make door toward player direction
local yaw1 = self.object:get_yaw() + math.pi / 2
local p1 = {
x = s.x + math.cos(yaw1),
y = s.y,
z = s.z + math.sin(yaw1)
}
if not minetest.is_protected(p1, "") then
local node1 = node_ok(p1, "air").name
local ndef1 = minetest.registered_nodes[node1]
if node1 ~= "air"
and node1 ~= "ignore"
and ndef1
and not ndef1.groups.level
and not ndef1.groups.unbreakable
and not ndef1.groups.liquid then
minetest.add_item(p1, ItemStack(node1))
minetest.set_node(p1, {name = "air"})
end
p1.y = p1.y + 1
node1 = node_ok(p1, "air").name
ndef1 = minetest.registered_nodes[node1]
if node1 ~= "air"
and node1 ~= "ignore"
and ndef1
and not ndef1.groups.level
and not ndef1.groups.unbreakable
and not ndef1.groups.liquid then
minetest.add_item(p1, ItemStack(node1))
minetest.set_node(p1, {name = "air"})
end
end
end
end
-- will try again in 2 seconds
self.path.stuck_timer = stuck_timeout - 2
elseif s.y < p1.y and (not self.fly) then
do_jump(self) --add jump to pathfinding
self.path.following = true
-- Yay, I found path!
-- TODO: Implement war_cry sound without being annoying
--self:mob_sound("war_cry", true)
else
self:set_velocity(self.walk_velocity)
-- follow path now that it has it
self.path.following = true
end
end
end
-- specific attacks
local specific_attack = function(list, what)
-- no list so attack default (player, animals etc.)
if list == nil then
return true
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 attack
function mob_class:monster_attack()
if not damage_enabled
or self.passive ~= false
or self.state == "attack"
or day_docile(self) 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)
local blacklist_attack = {}
for n = 1, #objs do
if not objs[n]:is_player() then
obj = objs[n]:get_luaentity()
if obj then
player = obj.object
name = obj.name or ""
end
if obj and obj.type == self.type and obj.passive == false and obj.state == "attack" and obj.attack then
table.insert(blacklist_attack, obj.attack)
end
end
end
for n = 1, #objs do
if objs[n]:is_player() then
if mcl_mobs.invis[ objs[n]:get_player_name() ] or (not self:object_in_range(objs[n])) then
type = ""
elseif (self.type == "monster" or self._aggro) then
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 attack, failing that attack player/npc/animal
if specific_attack(self.specific_attack, name)
and (type == "player" or ( type == "npc" and self.attack_npcs )
or (type == "animal" and self.attack_animals == true)) then
p = player:get_pos()
sp = s
dist = vector.distance(p, s)
-- aim higher to make looking up hills more realistic
p.y = p.y + 1
sp.y = sp.y + 1
local attacked_p = false
for c=1, #blacklist_attack do
if blacklist_attack[c] == player then
attacked_p = true
end
end
-- choose closest player to attack
if dist < min_dist
and not attacked_p
and self:line_of_sight( sp, p, 2) == true then
min_dist = dist
min_player = player
end
end
end
if not min_player and #blacklist_attack > 0 then
min_player=blacklist_attack[math.random(#blacklist_attack)]
end
-- attack player
if min_player then
self:do_attack(min_player)
end
end
-- npc, find closest monster to attack
function mob_class:npc_attack()
if self.type ~= "npc"
or not self.attacks_monsters
or self.state == "attack" then
return
end
local p, sp, obj, min_player
local s = self.object:get_pos()
local min_dist = self.view_range + 1
local objs = minetest.get_objects_inside_radius(s, self.view_range)
for n = 1, #objs do
obj = objs[n]:get_luaentity()
if obj and obj.type == "monster" then
p = obj.object:get_pos()
sp = s
local dist = vector.distance(p, s)
-- aim higher to make looking up hills more realistic
p.y = p.y + 1
sp.y = sp.y + 1
if dist < min_dist
and self:line_of_sight( sp, p, 2) == true then
min_dist = dist
min_player = obj.object
end
end
end
if min_player then
self:do_attack(min_player)
end
end
-- dogshoot attack switch and counter function
function mob_class:dogswitch(dtime)
-- switch mode not activated
if not self.dogshoot_switch
or not dtime then
return 0
end
self.dogshoot_count = self.dogshoot_count + dtime
if (self.dogshoot_switch == 1
and self.dogshoot_count > self.dogshoot_count_max)
or (self.dogshoot_switch == 2
and self.dogshoot_count > self.dogshoot_count2_max) then
self.dogshoot_count = 0
if self.dogshoot_switch == 1 then
self.dogshoot_switch = 2
else
self.dogshoot_switch = 1
end
end
return self.dogshoot_switch
end
-- no damage to nodes explosion
function mob_class:safe_boom(pos, strength)
minetest.sound_play(self.sounds and self.sounds.explode or "tnt_explode", {
pos = pos,
gain = 1.0,
max_hear_distance = self.sounds and self.sounds.distance or 32
}, true)
local radius = strength
entity_physics(pos, radius)
mcl_mobs.effect(pos, 32, "mcl_particles_smoke.png", radius * 3, radius * 5, radius, 1, 0)
end
-- make explosion with protection and tnt mod check
function mob_class:boom(pos, strength, fire)
if mobs_griefing and not minetest.is_protected(pos, "") then
mcl_explosions.explode(pos, strength, { drop_chance = 1.0, fire = fire }, self.object)
else
mcl_mobs.mob_class.safe_boom(self, pos, strength) --need to call it this way bc self is the "arrow" object here
end
-- delete the object after it punched the player to avoid nil entities in e.g. mcl_shields!!
self.object:remove()
end