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veloren/server/src/sys/agent.rs

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pub mod attack;
pub mod consts;
pub mod data;
pub mod util;
use crate::{
rtsim::{entity::PersonalityTrait, RtSim},
sys::agent::{
consts::{
AVG_FOLLOW_DIST, DAMAGE_MEMORY_DURATION, DEFAULT_ATTACK_RANGE, FLEE_DURATION,
HEALING_ITEM_THRESHOLD, IDLE_HEALING_ITEM_THRESHOLD, MAX_FLEE_DIST, MAX_FOLLOW_DIST,
PARTIAL_PATH_DIST, RETARGETING_THRESHOLD_SECONDS, SEPARATION_BIAS, SEPARATION_DIST,
},
data::{AgentData, AttackData, Path, ReadData, Tactic, TargetData},
util::{
aim_projectile, are_our_owners_hostile, entities_have_line_of_sight, get_attacker,
get_entity_by_id, is_dead, is_dead_or_invulnerable, is_dressed_as_cultist,
is_invulnerable, is_village_guard, is_villager, stop_pursuing,
},
},
};
use common::{
combat::compute_stealth_coefficient,
comp::{
self,
agent::{
AgentEvent, Sound, SoundKind, Target, TimerAction, DEFAULT_INTERACTION_TIME,
TRADE_INTERACTION_TIME,
},
buff::BuffKind,
compass::{Direction, Distance},
dialogue::{MoodContext, MoodState, Subject},
inventory::slot::EquipSlot,
invite::{InviteKind, InviteResponse},
item::{
tool::{AbilitySpec, ToolKind},
ConsumableKind, Item, ItemDesc, ItemKind,
},
projectile::ProjectileConstructor,
Agent, Alignment, BehaviorState, Body, CharacterState, ControlAction, ControlEvent,
Controller, Health, HealthChange, InputKind, InventoryAction, Pos, Scale,
UnresolvedChatMsg, UtteranceKind,
},
effect::{BuffEffect, Effect},
event::{Emitter, EventBus, ServerEvent},
path::TraversalConfig,
rtsim::{Memory, MemoryItem, RtSimEvent},
states::basic_beam,
terrain::{Block, TerrainGrid},
time::DayPeriod,
trade::{TradeAction, TradePhase, TradeResult},
util::Dir,
vol::ReadVol,
};
use common_base::prof_span;
use common_ecs::{Job, Origin, ParMode, Phase, System};
use rand::{thread_rng, Rng};
use rayon::iter::ParallelIterator;
use specs::{
saveload::{Marker, MarkerAllocator},
Entity as EcsEntity, Join, ParJoin, Write, WriteExpect, WriteStorage,
};
use vek::*;
/// This system will allow NPCs to modify their controller
#[derive(Default)]
pub struct Sys;
impl<'a> System<'a> for Sys {
type SystemData = (
ReadData<'a>,
Write<'a, EventBus<ServerEvent>>,
WriteStorage<'a, Agent>,
WriteStorage<'a, Controller>,
WriteExpect<'a, RtSim>,
);
const NAME: &'static str = "agent";
const ORIGIN: Origin = Origin::Server;
const PHASE: Phase = Phase::Create;
fn run(
job: &mut Job<Self>,
(read_data, event_bus, mut agents, mut controllers, mut rtsim): Self::SystemData,
) {
let rtsim = &mut *rtsim;
job.cpu_stats.measure(ParMode::Rayon);
(
&read_data.entities,
(&read_data.energies, read_data.healths.maybe()),
(
&read_data.positions,
&read_data.velocities,
&read_data.orientations,
),
read_data.bodies.maybe(),
&read_data.inventories,
(
&read_data.char_states,
&read_data.skill_set,
&read_data.active_abilities,
),
&read_data.physics_states,
&read_data.uids,
&mut agents,
&mut controllers,
read_data.light_emitter.maybe(),
read_data.groups.maybe(),
!&read_data.is_mounts,
)
.par_join()
.for_each_init(
|| {
prof_span!(guard, "agent rayon job");
guard
},
|_guard,
(
entity,
(energy, health),
(pos, vel, ori),
body,
inventory,
(char_state, skill_set, active_abilities),
physics_state,
uid,
agent,
controller,
light_emitter,
group,
_,
)| {
let mut event_emitter = event_bus.emitter();
let mut rng = thread_rng();
// Hack, replace with better system when groups are more sophisticated
// Override alignment if in a group unless entity is owned already
let alignment = if matches!(
&read_data.alignments.get(entity),
&Some(Alignment::Owned(_))
) {
read_data.alignments.get(entity).copied()
} else {
group
.and_then(|g| read_data.group_manager.group_info(*g))
.and_then(|info| read_data.uids.get(info.leader))
.copied()
.map_or_else(
|| read_data.alignments.get(entity).copied(),
|uid| Some(Alignment::Owned(uid)),
)
};
if !matches!(char_state, CharacterState::LeapMelee(_)) {
// Default to looking in orientation direction
// (can be overridden below)
//
// This definetly breaks LeapMelee and
// probably not only that, do we really need this at all?
controller.reset();
controller.inputs.look_dir = ori.look_dir();
}
let scale = read_data.scales.get(entity).map_or(1.0, |Scale(s)| *s);
let glider_equipped = inventory
.equipped(EquipSlot::Glider)
.as_ref()
.map_or(false, |item| {
matches!(item.kind(), comp::item::ItemKind::Glider(_))
});
let is_gliding = matches!(
read_data.char_states.get(entity),
Some(CharacterState::GlideWield(_) | CharacterState::Glide(_))
) && physics_state.on_ground.is_none();
if let Some(pid) = agent.position_pid_controller.as_mut() {
pid.add_measurement(read_data.time.0, pos.0);
}
// This controls how picky NPCs are about their pathfinding.
// Giants are larger and so can afford to be less precise
// when trying to move around the world
// (especially since they would otherwise get stuck on
// obstacles that smaller entities would not).
let node_tolerance = scale * 1.5;
let slow_factor = body.map_or(0.0, |b| b.base_accel() / 250.0).min(1.0);
let traversal_config = TraversalConfig {
node_tolerance,
slow_factor,
on_ground: physics_state.on_ground.is_some(),
in_liquid: physics_state.in_liquid().is_some(),
min_tgt_dist: 1.0,
can_climb: body.map_or(false, Body::can_climb),
can_fly: body.map_or(false, |b| b.fly_thrust().is_some()),
};
let health_fraction = health.map_or(1.0, Health::fraction);
let rtsim_entity = read_data
.rtsim_entities
.get(entity)
.and_then(|rtsim_ent| rtsim.get_entity(rtsim_ent.0));
if traversal_config.can_fly && matches!(body, Some(Body::Ship(_))) {
// hack (kinda): Never turn off flight airships
// since it results in stuttering and falling back to the ground.
//
// TODO: look into `controller.reset()` line above
// and see if it fixes it
controller.push_basic_input(InputKind::Fly);
}
// Package all this agent's data into a convenient struct
let data = AgentData {
entity: &entity,
rtsim_entity,
uid,
pos,
vel,
ori,
energy,
body,
inventory,
skill_set,
physics_state,
alignment: alignment.as_ref(),
traversal_config,
scale,
damage: health_fraction,
light_emitter,
glider_equipped,
is_gliding,
health: read_data.healths.get(entity),
char_state,
active_abilities,
cached_spatial_grid: &read_data.cached_spatial_grid,
};
///////////////////////////////////////////////////////////
// Behavior tree
///////////////////////////////////////////////////////////
// The behavior tree is meant to make decisions for agents
// *but should not* mutate any data (only action nodes
// should do that). Each path should lead to one (and only
// one) action node. This makes bugfinding much easier and
// debugging way easier. If you don't think so, try
// debugging the agent code before this MR
// (https://gitlab.com/veloren/veloren/-/merge_requests/1801).
// Each tick should arrive at one (1) action node which
// then determines what the agent does. If this makes you
// uncomfortable, consider dt the response time of the
// NPC. To make the tree easier to read, subtrees can be
// created as methods on `AgentData`. Action nodes are
// also methods on the `AgentData` struct. Action nodes
// are the only parts of this tree that should provide
// inputs.
// Falling damage starts from 30.0 as of time of writing
// But keep in mind our 25 m/s gravity
let is_falling_dangerous = data.vel.0.z < -20.0;
let is_on_fire = read_data
.buffs
.get(entity)
.map_or(false, |b| b.kinds.contains_key(&BuffKind::Burning));
// If falling velocity is critical, throw everything
// and save yourself!
//
// If can fly - fly.
// If have glider - glide.
// Else, rest in peace.
if is_falling_dangerous && data.traversal_config.can_fly {
data.fly_upward(controller)
} else if is_falling_dangerous && data.glider_equipped {
data.glider_fall(controller);
// If on fire and able, stop, drop, and roll
} else if is_on_fire
&& data.body.map_or(false, |b| b.is_humanoid())
&& data.physics_state.on_ground.is_some()
&& rng.gen_bool((2.0 * read_data.dt.0).into())
{
controller.inputs.move_dir = ori
.look_vec()
.xy()
.try_normalized()
.unwrap_or_else(Vec2::zero);
controller.push_basic_input(InputKind::Roll);
} else {
// Target an entity that's attacking us if the attack was recent and we have
// a health component
match health {
Some(health)
if read_data.time.0 - health.last_change.time.0
< DAMAGE_MEMORY_DURATION =>
{
if let Some(by) = health.last_change.damage_by() {
if let Some(attacker) =
read_data.uid_allocator.retrieve_entity_internal(by.uid().0)
{
// If target is dead or invulnerable (for now, this only
// means safezone), untarget them and idle.
if is_dead_or_invulnerable(attacker, &read_data) {
agent.target = None;
} else {
if agent.target.is_none() {
controller.push_event(ControlEvent::Utterance(
UtteranceKind::Angry,
));
}
// Determine whether the new target should be a priority
// over the old one (i.e: because it's either close or
// because they attacked us).
if agent.target.map_or(true, |target| {
data.is_more_dangerous_than_target(
attacker, target, &read_data,
)
}) {
agent.target = Some(Target {
target: attacker,
hostile: true,
selected_at: read_data.time.0,
aggro_on: true,
});
}
// Remember this attack if we're an RtSim entity
if let Some(attacker_stats) =
data.rtsim_entity.and(read_data.stats.get(attacker))
{
agent.add_fight_to_memory(
&attacker_stats.name,
read_data.time.0,
);
}
}
}
}
},
_ => {},
}
if let Some(target_info) = agent.target {
data.react_to_target(
agent,
controller,
&read_data,
&mut event_emitter,
target_info,
&mut rng,
);
} else {
data.idle_tree(
agent,
controller,
&read_data,
&mut event_emitter,
&mut rng,
);
}
}
debug_assert!(controller.inputs.move_dir.map(|e| !e.is_nan()).reduce_and());
debug_assert!(controller.inputs.look_dir.map(|e| !e.is_nan()).reduce_and());
},
);
for (agent, rtsim_entity) in (&mut agents, &read_data.rtsim_entities).join() {
// Entity must be loaded in as it has an agent component :)
// React to all events in the controller
for event in core::mem::take(&mut agent.rtsim_controller.events) {
match event {
RtSimEvent::AddMemory(memory) => {
rtsim.insert_entity_memory(rtsim_entity.0, memory.clone());
},
RtSimEvent::ForgetEnemy(name) => {
rtsim.forget_entity_enemy(rtsim_entity.0, &name);
},
RtSimEvent::SetMood(memory) => {
rtsim.set_entity_mood(rtsim_entity.0, memory.clone());
},
RtSimEvent::PrintMemories => {},
}
}
}
}
}
impl<'a> AgentData<'a> {
////////////////////////////////////////
// Subtrees
////////////////////////////////////////
fn react_to_target(
&self,
agent: &mut Agent,
controller: &mut Controller,
read_data: &ReadData,
event_emitter: &mut Emitter<'_, ServerEvent>,
target_info: Target,
rng: &mut impl Rng,
) {
let Target {
target, hostile, ..
} = target_info;
if let Some(tgt_health) = read_data.healths.get(target) {
// If target is dead, forget them
if tgt_health.is_dead {
if let Some(tgt_stats) = self.rtsim_entity.and(read_data.stats.get(target)) {
agent.forget_enemy(&tgt_stats.name);
}
agent.target = None;
// Else, if target is hostile, hostile tree
} else if hostile {
self.hostile_tree(agent, controller, read_data, event_emitter, rng);
// Else, if owned, act as pet to them
} else if let Some(Alignment::Owned(uid)) = self.alignment {
if read_data.uids.get(target) == Some(uid) {
self.react_as_pet(agent, controller, read_data, event_emitter, target, rng);
} else {
agent.target = None;
self.idle_tree(agent, controller, read_data, event_emitter, rng);
};
} else {
self.idle_tree(agent, controller, read_data, event_emitter, rng);
}
} else {
agent.target = None;
self.idle_tree(agent, controller, read_data, event_emitter, rng);
}
}
fn react_as_pet(
&self,
agent: &mut Agent,
controller: &mut Controller,
read_data: &ReadData,
event_emitter: &mut Emitter<'_, ServerEvent>,
target: EcsEntity,
rng: &mut impl Rng,
) {
if let Some(tgt_pos) = read_data.positions.get(target) {
let dist_sqrd = self.pos.0.distance_squared(tgt_pos.0);
let owner_recently_attacked = if let Some(target_health) = read_data.healths.get(target)
{
read_data.time.0 - target_health.last_change.time.0 < 5.0
&& target_health.last_change.amount < 0.0
} else {
false
};
// If too far away, then follow
if dist_sqrd > (MAX_FOLLOW_DIST).powi(2) {
self.follow(agent, controller, &read_data.terrain, tgt_pos);
// Else, attack target's attacker (if there is one)
// Target is the owner in this case
} else if owner_recently_attacked {
self.attack_target_attacker(agent, read_data, controller, rng);
// Otherwise, just idle
} else {
self.idle_tree(agent, controller, read_data, event_emitter, rng);
}
}
}
fn idle_tree(
&self,
agent: &mut Agent,
controller: &mut Controller,
read_data: &ReadData,
event_emitter: &mut Emitter<'_, ServerEvent>,
rng: &mut impl Rng,
) {
// TODO: Awareness currently doesn't influence anything.
//agent.decrement_awareness(read_data.dt.0);
let small_chance = rng.gen_bool(0.1);
// Set owner if no target
if agent.target.is_none() && small_chance {
if let Some(Alignment::Owned(owner)) = self.alignment {
if let Some(owner) = get_entity_by_id(owner.id(), read_data) {
agent.target = Some(Target::new(owner, false, read_data.time.0, false));
}
}
}
// Interact if incoming messages
if !agent.inbox.is_empty() {
if matches!(
agent.inbox.front(),
Some(AgentEvent::ServerSound(_)) | Some(AgentEvent::Hurt)
) {
let sound = agent.inbox.pop_front();
match sound {
Some(AgentEvent::ServerSound(sound)) => {
agent.sounds_heard.push(sound);
},
Some(AgentEvent::Hurt) => {
// Hurt utterances at random upon receiving damage
if rng.gen::<f32>() < 0.4 {
controller.push_utterance(UtteranceKind::Hurt);
}
},
//Note: this should be unreachable
Some(_) | None => return,
}
} else {
agent.action_state.timer = 0.1;
}
}
// If we receive a new interaction, start the interaction timer
if agent.allowed_to_speak()
&& self.recv_interaction(agent, controller, read_data, event_emitter)
{
agent.timer.start(read_data.time.0, TimerAction::Interact);
}
let timeout = if agent.behavior.is(BehaviorState::TRADING) {
TRADE_INTERACTION_TIME
} else {
DEFAULT_INTERACTION_TIME
};
match agent
.timer
.timeout_elapsed(read_data.time.0, TimerAction::Interact, timeout as f64)
{
None => {
// Look toward the interacting entity for a while
if let Some(Target { target, .. }) = &agent.target {
self.look_toward(controller, read_data, *target);
controller.push_action(ControlAction::Talk);
}
},
Some(just_ended) => {
if just_ended {
agent.target = None;
controller.push_action(ControlAction::Stand);
}
if rng.gen::<f32>() < 0.1 {
self.choose_target(agent, controller, read_data);
} else {
self.handle_sounds_heard(agent, controller, read_data, rng);
}
},
}
}
fn hostile_tree(
&self,
agent: &mut Agent,
controller: &mut Controller,
read_data: &ReadData,
event_emitter: &mut Emitter<'_, ServerEvent>,
rng: &mut impl Rng,
) {
if self.damage < HEALING_ITEM_THRESHOLD && self.heal_self(agent, controller, false) {
agent.action_state.timer = 0.01;
return;
}
if let Some(AgentEvent::Hurt) = agent.inbox.pop_front() {
// Hurt utterances at random upon receiving damage
if rng.gen::<f32>() < 0.4 {
controller.push_utterance(UtteranceKind::Hurt);
}
}
if let Some(Target {
target,
selected_at,
aggro_on,
..
}) = &mut agent.target
{
let target = *target;
let selected_at = *selected_at;
if let Some(tgt_pos) = read_data.positions.get(target) {
let dist_sqrd = self.pos.0.distance_squared(tgt_pos.0);
let origin_dist_sqrd = match agent.patrol_origin {
Some(pos) => pos.distance_squared(self.pos.0),
None => 1.0,
};
let own_health_fraction = match self.health {
Some(val) => val.fraction(),
None => 1.0,
};
let target_health_fraction = match read_data.healths.get(target) {
Some(val) => val.fraction(),
None => 1.0,
};
let in_aggro_range = agent
.psyche
.aggro_dist
.map_or(true, |ad| dist_sqrd < ad.powi(2));
if in_aggro_range {
*aggro_on = true;
}
let aggro_on = *aggro_on;
if self.below_flee_health(agent) {
let has_opportunity_to_flee = agent.action_state.timer < FLEE_DURATION;
let within_flee_distance = dist_sqrd < MAX_FLEE_DIST.powi(2);
// FIXME: Using action state timer to see if allowed to speak is a hack.
if agent.action_state.timer == 0.0 {
self.cry_out(agent, event_emitter, read_data);
agent.action_state.timer = 0.01;
} else if within_flee_distance && has_opportunity_to_flee {
self.flee(tgt_pos, agent, controller, &read_data.terrain);
agent.action_state.timer += read_data.dt.0;
} else {
agent.action_state.timer = 0.0;
agent.target = None;
self.idle(agent, controller, read_data, rng);
}
} else if is_dead(target, read_data) {
self.exclaim_relief_about_enemy_dead(agent, event_emitter);
agent.target = None;
self.idle(agent, controller, read_data, rng);
} else if is_invulnerable(target, read_data)
|| stop_pursuing(
dist_sqrd,
origin_dist_sqrd,
own_health_fraction,
target_health_fraction,
read_data.time.0 - selected_at,
&agent.psyche,
)
{
agent.target = None;
self.idle(agent, controller, read_data, rng);
} else {
let is_time_to_retarget =
read_data.time.0 - selected_at > RETARGETING_THRESHOLD_SECONDS;
if !in_aggro_range && is_time_to_retarget {
self.choose_target(agent, controller, read_data);
}
if aggro_on {
let target_data = TargetData::new(
tgt_pos,
read_data.bodies.get(target),
read_data.scales.get(target),
);
let tgt_name = read_data.stats.get(target).map(|stats| stats.name.clone());
tgt_name
.map(|tgt_name| agent.add_fight_to_memory(&tgt_name, read_data.time.0));
self.attack(agent, controller, &target_data, read_data, rng);
} else {
self.menacing(agent, controller, target, read_data, event_emitter, rng);
}
}
}
}
}
////////////////////////////////////////
// Action Nodes
////////////////////////////////////////
fn glider_fall(&self, controller: &mut Controller) {
controller.push_action(ControlAction::GlideWield);
let flight_direction =
Vec3::from(self.vel.0.xy().try_normalized().unwrap_or_else(Vec2::zero));
let flight_ori = Quaternion::from_scalar_and_vec3((1.0, flight_direction));
let ori = self.ori.look_vec();
let look_dir = if ori.z > 0.0 {
flight_ori.rotated_x(-0.1)
} else {
flight_ori.rotated_x(0.1)
};
let (_, look_dir) = look_dir.into_scalar_and_vec3();
controller.inputs.look_dir = Dir::from_unnormalized(look_dir).unwrap_or_else(Dir::forward);
}
fn fly_upward(&self, controller: &mut Controller) {
controller.push_basic_input(InputKind::Fly);
controller.inputs.move_z = 1.0;
}
fn idle(
&self,
agent: &mut Agent,
controller: &mut Controller,
read_data: &ReadData,
rng: &mut impl Rng,
) {
// Light lanterns at night
// TODO Add a method to turn on NPC lanterns underground
let lantern_equipped = self
.inventory
.equipped(EquipSlot::Lantern)
.as_ref()
.map_or(false, |item| {
matches!(item.kind(), comp::item::ItemKind::Lantern(_))
});
let lantern_turned_on = self.light_emitter.is_some();
let day_period = DayPeriod::from(read_data.time_of_day.0);
// Only emit event for agents that have a lantern equipped
if lantern_equipped && rng.gen_bool(0.001) {
if day_period.is_dark() && !lantern_turned_on {
// Agents with turned off lanterns turn them on randomly once it's
// nighttime and keep them on.
// Only emit event for agents that sill need to
// turn on their lantern.
controller.push_event(ControlEvent::EnableLantern)
} else if lantern_turned_on && day_period.is_light() {
// agents with turned on lanterns turn them off randomly once it's
// daytime and keep them off.
controller.push_event(ControlEvent::DisableLantern)
}
};
if self.damage < IDLE_HEALING_ITEM_THRESHOLD && self.heal_self(agent, controller, true) {
agent.action_state.timer = 0.01;
return;
}
agent.action_state.timer = 0.0;
if let Some((travel_to, _destination)) = &agent.rtsim_controller.travel_to {
// If it has an rtsim destination and can fly, then it should.
// If it is flying and bumps something above it, then it should move down.
if self.traversal_config.can_fly
&& !read_data
.terrain
.ray(self.pos.0, self.pos.0 + (Vec3::unit_z() * 3.0))
.until(Block::is_solid)
.cast()
.1
.map_or(true, |b| b.is_some())
{
controller.push_basic_input(InputKind::Fly);
} else {
controller.push_cancel_input(InputKind::Fly)
}
if let Some((bearing, speed)) = agent.chaser.chase(
&*read_data.terrain,
self.pos.0,
self.vel.0,
*travel_to,
TraversalConfig {
min_tgt_dist: 1.25,
..self.traversal_config
},
) {
controller.inputs.move_dir =
bearing.xy().try_normalized().unwrap_or_else(Vec2::zero)
* speed.min(agent.rtsim_controller.speed_factor);
self.jump_if(bearing.z > 1.5 || self.traversal_config.can_fly, controller);
controller.inputs.climb = Some(comp::Climb::Up);
//.filter(|_| bearing.z > 0.1 || self.physics_state.in_liquid().is_some());
let height_offset = bearing.z
+ if self.traversal_config.can_fly {
// NOTE: costs 4 us (imbris)
let obstacle_ahead = read_data
.terrain
.ray(
self.pos.0 + Vec3::unit_z(),
self.pos.0
+ bearing.try_normalized().unwrap_or_else(Vec3::unit_y) * 80.0
+ Vec3::unit_z(),
)
.until(Block::is_solid)
.cast()
.1
.map_or(true, |b| b.is_some());
let mut ground_too_close = self
.body
.map(|body| {
#[cfg(feature = "worldgen")]
let height_approx = self.pos.0.z
- read_data
.world
.sim()
.get_alt_approx(self.pos.0.xy().map(|x: f32| x as i32))
.unwrap_or(0.0);
#[cfg(not(feature = "worldgen"))]
let height_approx = self.pos.0.z;
height_approx < body.flying_height()
})
.unwrap_or(false);
const NUM_RAYS: usize = 5;
// NOTE: costs 15-20 us (imbris)
for i in 0..=NUM_RAYS {
let magnitude = self.body.map_or(20.0, |b| b.flying_height());
// Lerp between a line straight ahead and straight down to detect a
// wedge of obstacles we might fly into (inclusive so that both vectors
// are sampled)
if let Some(dir) = Lerp::lerp(
-Vec3::unit_z(),
Vec3::new(bearing.x, bearing.y, 0.0),
i as f32 / NUM_RAYS as f32,
)
.try_normalized()
{
ground_too_close |= read_data
.terrain
.ray(self.pos.0, self.pos.0 + magnitude * dir)
.until(|b: &Block| b.is_solid() || b.is_liquid())
.cast()
.1
.map_or(false, |b| b.is_some())
}
}
if obstacle_ahead || ground_too_close {
5.0 //fly up when approaching obstacles
} else {
-2.0
} //flying things should slowly come down from the stratosphere
} else {
0.05 //normal land traveller offset
};
if let Some(pid) = agent.position_pid_controller.as_mut() {
pid.sp = self.pos.0.z + height_offset * Vec3::unit_z();
controller.inputs.move_z = pid.calc_err();
} else {
controller.inputs.move_z = height_offset;
}
// Put away weapon
if rng.gen_bool(0.1)
&& matches!(
read_data.char_states.get(*self.entity),
Some(CharacterState::Wielding(_))
)
{
controller.push_action(ControlAction::Unwield);
}
}
} else {
agent.bearing += Vec2::new(rng.gen::<f32>() - 0.5, rng.gen::<f32>() - 0.5) * 0.1
- agent.bearing * 0.003
- agent.patrol_origin.map_or(Vec2::zero(), |patrol_origin| {
(self.pos.0 - patrol_origin).xy() * 0.0002
});
// Stop if we're too close to a wall
// or about to walk off a cliff
// NOTE: costs 1 us (imbris) <- before cliff raycast added
agent.bearing *= 0.1
+ if read_data
.terrain
.ray(
self.pos.0 + Vec3::unit_z(),
self.pos.0
+ Vec3::from(agent.bearing)
.try_normalized()
.unwrap_or_else(Vec3::unit_y)
* 5.0
+ Vec3::unit_z(),
)
.until(Block::is_solid)
.cast()
.1
.map_or(true, |b| b.is_none())
&& read_data
.terrain
.ray(
self.pos.0
+ Vec3::from(agent.bearing)
.try_normalized()
.unwrap_or_else(Vec3::unit_y),
self.pos.0
+ Vec3::from(agent.bearing)
.try_normalized()
.unwrap_or_else(Vec3::unit_y)
- Vec3::unit_z() * 4.0,
)
.until(Block::is_solid)
.cast()
.0
< 3.0
{
0.9
} else {
0.0
};
if agent.bearing.magnitude_squared() > 0.5f32.powi(2) {
controller.inputs.move_dir = agent.bearing * 0.65;
}
// Put away weapon
if rng.gen_bool(0.1)
&& matches!(
read_data.char_states.get(*self.entity),
Some(CharacterState::Wielding(_))
)
{
controller.push_action(ControlAction::Unwield);
}
if rng.gen::<f32>() < 0.0015 {
controller.push_utterance(UtteranceKind::Calm);
}
// Sit
if rng.gen::<f32>() < 0.0035 {
controller.push_action(ControlAction::Sit);
}
}
}
pub fn follow(
&self,
agent: &mut Agent,
controller: &mut Controller,
terrain: &TerrainGrid,
tgt_pos: &Pos,
) {
if let Some((bearing, speed)) = agent.chaser.chase(
&*terrain,
self.pos.0,
self.vel.0,
tgt_pos.0,
TraversalConfig {
min_tgt_dist: AVG_FOLLOW_DIST,
..self.traversal_config
},
) {
let dist_sqrd = self.pos.0.distance_squared(tgt_pos.0);
controller.inputs.move_dir = bearing.xy().try_normalized().unwrap_or_else(Vec2::zero)
* speed.min(0.2 + (dist_sqrd - AVG_FOLLOW_DIST.powi(2)) / 8.0);
self.jump_if(bearing.z > 1.5, controller);
controller.inputs.move_z = bearing.z;
}
}
fn recv_interaction(
&self,
agent: &mut Agent,
controller: &mut Controller,
read_data: &ReadData,
event_emitter: &mut Emitter<'_, ServerEvent>,
) -> bool {
// TODO: Process group invites
// TODO: Add Group AgentEvent
// let accept = false; // set back to "matches!(alignment, Alignment::Npc)"
// when we got better NPC recruitment mechanics if accept {
// // Clear agent comp
// //*agent = Agent::default();
// controller
// .push_event(ControlEvent::InviteResponse(InviteResponse::Accept));
// } else {
// controller
// .push_event(ControlEvent::InviteResponse(InviteResponse::Decline));
// }
agent.action_state.timer += read_data.dt.0;
let msg = agent.inbox.pop_front();
match msg {
Some(AgentEvent::Talk(by, subject)) => {
if agent.allowed_to_speak() {
if let Some(target) = get_entity_by_id(by.id(), read_data) {
agent.target = Some(Target::new(target, false, read_data.time.0, false));
if self.look_toward(controller, read_data, target) {
controller.push_action(ControlAction::Stand);
controller.push_action(ControlAction::Talk);
controller.push_utterance(UtteranceKind::Greeting);
match subject {
Subject::Regular => {
if let (
Some((_travel_to, destination_name)),
Some(rtsim_entity),
) = (&agent.rtsim_controller.travel_to, &self.rtsim_entity)
{
let personality = &rtsim_entity.brain.personality;
let standard_response_msg = || -> String {
if personality
.personality_traits
.contains(PersonalityTrait::Extroverted)
{
format!(
"I'm heading to {}! Want to come along?",
destination_name
)
} else if personality
.personality_traits
.contains(PersonalityTrait::Disagreeable)
{
"Hrm.".to_string()
} else {
"Hello!".to_string()
}
};
let msg =
if let Some(tgt_stats) = read_data.stats.get(target) {
agent.rtsim_controller.events.push(
RtSimEvent::AddMemory(Memory {
item: MemoryItem::CharacterInteraction {
name: tgt_stats.name.clone(),
},
time_to_forget: read_data.time.0 + 600.0,
}),
);
if rtsim_entity
.brain
.remembers_character(&tgt_stats.name)
{
if personality
.personality_traits
.contains(PersonalityTrait::Extroverted)
{
format!(
"Greetings fair {}! It has been far \
too long since last I saw you. I'm \
going to {} right now.",
&tgt_stats.name, destination_name
)
} else if personality
.personality_traits
.contains(PersonalityTrait::Disagreeable)
{
"Oh. It's you again.".to_string()
} else {
format!(
"Hi again {}! Unfortunately I'm in a \
hurry right now. See you!",
&tgt_stats.name
)
}
} else {
standard_response_msg()
}
} else {
standard_response_msg()
};
self.chat_npc(msg, event_emitter);
} else if agent.behavior.can_trade() {
if !agent.behavior.is(BehaviorState::TRADING) {
controller.push_initiate_invite(by, InviteKind::Trade);
self.chat_npc(
"npc.speech.merchant_advertisement",
event_emitter,
);
} else {
let default_msg = "npc.speech.merchant_busy";
let msg = self.rtsim_entity.map_or(default_msg, |e| {
if e.brain
.personality
.personality_traits
.contains(PersonalityTrait::Disagreeable)
{
"npc.speech.merchant_busy_rude"
} else {
default_msg
}
});
self.chat_npc(msg, event_emitter);
}
} else {
let mut rng = rand::thread_rng();
if let Some(extreme_trait) =
self.rtsim_entity.and_then(|e| {
e.brain.personality.random_chat_trait(&mut rng)
})
{
let msg = match extreme_trait {
PersonalityTrait::Open => {
"npc.speech.villager_open"
},
PersonalityTrait::Adventurous => {
"npc.speech.villager_adventurous"
},
PersonalityTrait::Closed => {
"npc.speech.villager_closed"
},
PersonalityTrait::Conscientious => {
"npc.speech.villager_conscientious"
},
PersonalityTrait::Busybody => {
"npc.speech.villager_busybody"
},
PersonalityTrait::Unconscientious => {
"npc.speech.villager_unconscientious"
},
PersonalityTrait::Extroverted => {
"npc.speech.villager_extroverted"
},
PersonalityTrait::Introverted => {
"npc.speech.villager_introverted"
},
PersonalityTrait::Agreeable => {
"npc.speech.villager_agreeable"
},
PersonalityTrait::Sociable => {
"npc.speech.villager_sociable"
},
PersonalityTrait::Disagreeable => {
"npc.speech.villager_disagreeable"
},
PersonalityTrait::Neurotic => {
"npc.speech.villager_neurotic"
},
PersonalityTrait::Seeker => {
"npc.speech.villager_seeker"
},
PersonalityTrait::SadLoner => {
"npc.speech.villager_sad_loner"
},
PersonalityTrait::Worried => {
"npc.speech.villager_worried"
},
PersonalityTrait::Stable => {
"npc.speech.villager_stable"
},
};
self.chat_npc(msg, event_emitter);
} else {
self.chat_npc("npc.speech.villager", event_emitter);
}
}
},
Subject::Trade => {
if agent.behavior.can_trade() {
if !agent.behavior.is(BehaviorState::TRADING) {
controller.push_initiate_invite(by, InviteKind::Trade);
self.chat_npc(
"npc.speech.merchant_advertisement",
event_emitter,
);
} else {
self.chat_npc(
"npc.speech.merchant_busy",
event_emitter,
);
}
} else {
// TODO: maybe make some travellers willing to trade with
// simpler goods like potions
self.chat_npc(
"npc.speech.villager_decline_trade",
event_emitter,
);
}
},
Subject::Mood => {
if let Some(rtsim_entity) = self.rtsim_entity {
if !rtsim_entity.brain.remembers_mood() {
// TODO: the following code will need a rework to
// implement more mood contexts
// This require that town NPCs becomes rtsim_entities to
// work fully.
match rand::random::<u32>() % 3 {
0 => agent.rtsim_controller.events.push(
RtSimEvent::SetMood(Memory {
item: MemoryItem::Mood {
state: MoodState::Good(
MoodContext::GoodWeather,
),
},
time_to_forget: read_data.time.0 + 21200.0,
}),
),
1 => agent.rtsim_controller.events.push(
RtSimEvent::SetMood(Memory {
item: MemoryItem::Mood {
state: MoodState::Neutral(
MoodContext::EverydayLife,
),
},
time_to_forget: read_data.time.0 + 21200.0,
}),
),
2 => agent.rtsim_controller.events.push(
RtSimEvent::SetMood(Memory {
item: MemoryItem::Mood {
state: MoodState::Bad(
MoodContext::GoodWeather,
),
},
time_to_forget: read_data.time.0 + 86400.0,
}),
),
_ => {}, // will never happen
}
}
if let Some(memory) = rtsim_entity.brain.get_mood() {
let msg = match &memory.item {
MemoryItem::Mood { state } => state.describe(),
_ => "".to_string(),
};
self.chat_npc(msg, event_emitter);
}
}
},
Subject::Location(location) => {
if let Some(tgt_pos) = read_data.positions.get(target) {
let raw_dir = location.origin.as_::<f32>() - tgt_pos.0.xy();
let dist = Distance::from_dir(raw_dir).name();
let dir = Direction::from_dir(raw_dir).name();
let msg = format!(
"{} ? I think it's {} {} from here!",
location.name, dist, dir
);
self.chat_npc(msg, event_emitter);
}
},
Subject::Person(person) => {
if let Some(src_pos) = read_data.positions.get(target) {
let msg = if let Some(person_pos) = person.origin {
let distance = Distance::from_dir(
person_pos.xy() - src_pos.0.xy(),
);
match distance {
Distance::NextTo | Distance::Near => {
format!(
"{} ? I think he's {} {} from here!",
person.name(),
distance.name(),
Direction::from_dir(
person_pos.xy() - src_pos.0.xy(),
)
.name()
)
},
_ => {
format!(
"{} ? I think he's gone visiting another \
town. Come back later!",
person.name()
)
},
}
} else {
format!(
"{} ? Sorry, I don't know where you can find him.",
person.name()
)
};
self.chat_npc(msg, event_emitter);
}
},
Subject::Work => {},
}
}
}
}
},
Some(AgentEvent::TradeInvite(with)) => {
if agent.behavior.can_trade() {
if !agent.behavior.is(BehaviorState::TRADING) {
// stand still and looking towards the trading player
controller.push_action(ControlAction::Stand);
controller.push_action(ControlAction::Talk);
if let Some(target) = get_entity_by_id(with.id(), read_data) {
agent.target =
Some(Target::new(target, false, read_data.time.0, false));
}
controller.push_invite_response(InviteResponse::Accept);
agent.behavior.unset(BehaviorState::TRADING_ISSUER);
agent.behavior.set(BehaviorState::TRADING);
} else {
controller.push_invite_response(InviteResponse::Decline);
self.chat_npc_if_allowed_to_speak(
"npc.speech.merchant_busy",
agent,
event_emitter,
);
}
} else {
// TODO: Provide a hint where to find the closest merchant?
controller.push_invite_response(InviteResponse::Decline);
self.chat_npc_if_allowed_to_speak(
"npc.speech.villager_decline_trade",
agent,
event_emitter,
);
}
},
Some(AgentEvent::TradeAccepted(with)) => {
if !agent.behavior.is(BehaviorState::TRADING) {
if let Some(target) = get_entity_by_id(with.id(), read_data) {
agent.target = Some(Target::new(target, false, read_data.time.0, false));
}
agent.behavior.set(BehaviorState::TRADING);
agent.behavior.set(BehaviorState::TRADING_ISSUER);
}
},
Some(AgentEvent::FinishedTrade(result)) => {
if agent.behavior.is(BehaviorState::TRADING) {
match result {
TradeResult::Completed => {
self.chat_npc("npc.speech.merchant_trade_successful", event_emitter);
},
_ => {
self.chat_npc("npc.speech.merchant_trade_declined", event_emitter);
},
}
agent.behavior.unset(BehaviorState::TRADING);
}
},
Some(AgentEvent::UpdatePendingTrade(boxval)) => {
let (tradeid, pending, prices, inventories) = *boxval;
if agent.behavior.is(BehaviorState::TRADING) {
let who: usize = if agent.behavior.is(BehaviorState::TRADING_ISSUER) {
0
} else {
1
};
let balance0: f32 =
prices.balance(&pending.offers, &inventories, 1 - who, true);
let balance1: f32 = prices.balance(&pending.offers, &inventories, who, false);
if balance0 >= balance1 {
// If the trade is favourable to us, only send an accept message if we're
// not already accepting (since otherwise, spamclicking the accept button
// results in lagging and moving to the review phase of an unfavorable trade
// (although since the phase is included in the message, this shouldn't
// result in fully accepting an unfavourable trade))
if !pending.accept_flags[who] && !pending.is_empty_trade() {
event_emitter.emit(ServerEvent::ProcessTradeAction(
*self.entity,
tradeid,
TradeAction::Accept(pending.phase),
));
tracing::trace!(?tradeid, ?balance0, ?balance1, "Accept Pending Trade");
}
} else {
if balance1 > 0.0 {
let msg = format!(
"That only covers {:.0}% of my costs!",
(balance0 / balance1 * 100.0).floor()
);
if let Some(tgt_data) = &agent.target {
// If talking with someone in particular, "tell" it only to them
if let Some(with) = read_data.uids.get(tgt_data.target) {
event_emitter.emit(ServerEvent::Chat(
UnresolvedChatMsg::npc_tell(*self.uid, *with, msg),
));
} else {
event_emitter.emit(ServerEvent::Chat(
UnresolvedChatMsg::npc_say(*self.uid, msg),
));
}
} else {
event_emitter.emit(ServerEvent::Chat(UnresolvedChatMsg::npc_say(
*self.uid, msg,
)));
}
}
if pending.phase != TradePhase::Mutate {
// we got into the review phase but without balanced goods, decline
agent.behavior.unset(BehaviorState::TRADING);
event_emitter.emit(ServerEvent::ProcessTradeAction(
*self.entity,
tradeid,
TradeAction::Decline,
));
}
}
}
},
Some(AgentEvent::ServerSound(_)) => {},
Some(AgentEvent::Hurt) => {},
None => return false,
}
true
}
fn look_toward(
&self,
controller: &mut Controller,
read_data: &ReadData,
target: EcsEntity,
) -> bool {
if let Some(tgt_pos) = read_data.positions.get(target) {
let eye_offset = self.body.map_or(0.0, |b| b.eye_height());
let tgt_eye_offset = read_data.bodies.get(target).map_or(0.0, |b| b.eye_height());
if let Some(dir) = Dir::from_unnormalized(
Vec3::new(tgt_pos.0.x, tgt_pos.0.y, tgt_pos.0.z + tgt_eye_offset)
- Vec3::new(self.pos.0.x, self.pos.0.y, self.pos.0.z + eye_offset),
) {
controller.inputs.look_dir = dir;
}
true
} else {
false
}
}
fn menacing(
&self,
agent: &mut Agent,
controller: &mut Controller,
target: EcsEntity,
read_data: &ReadData,
event_emitter: &mut Emitter<ServerEvent>,
rng: &mut impl Rng,
) {
let max_move = 0.5;
let move_dir = controller.inputs.move_dir;
let move_dir_mag = move_dir.magnitude();
let small_chance = rng.gen::<f32>() < read_data.dt.0 * 0.25;
let mut chat = |msg: &str| {
self.chat_npc_if_allowed_to_speak(msg.to_string(), agent, event_emitter);
};
let mut chat_villager_remembers_fighting = || {
let tgt_name = read_data.stats.get(target).map(|stats| stats.name.clone());
if let Some(tgt_name) = tgt_name {
chat(format!("{}! How dare you cross me again!", &tgt_name).as_str());
} else {
chat("You! How dare you cross me again!");
}
};
self.look_toward(controller, read_data, target);
controller.push_action(ControlAction::Wield);
if move_dir_mag > max_move {
controller.inputs.move_dir = max_move * move_dir / move_dir_mag;
}
if small_chance {
controller.push_utterance(UtteranceKind::Angry);
if is_villager(self.alignment) {
if self.remembers_fight_with(target, read_data) {
chat_villager_remembers_fighting();
} else if is_dressed_as_cultist(target, read_data) {
chat("npc.speech.villager_cultist_alarm");
} else {
chat("npc.speech.menacing");
}
} else {
chat("npc.speech.menacing");
}
}
// Remember target.
self.rtsim_entity.is_some().then(|| {
read_data
.stats
.get(target)
.map(|stats| agent.add_fight_to_memory(&stats.name, read_data.time.0))
});
}
fn flee(
&self,
tgt_pos: &Pos,
agent: &mut Agent,
controller: &mut Controller,
terrain: &TerrainGrid,
) {
if let Some(body) = self.body {
if body.can_strafe() && !self.is_gliding {
controller.push_action(ControlAction::Unwield);
}
}
if let Some((bearing, speed)) = agent.chaser.chase(
&*terrain,
self.pos.0,
self.vel.0,
// Away from the target (ironically)
self.pos.0
+ (self.pos.0 - tgt_pos.0)
.try_normalized()
.unwrap_or_else(Vec3::unit_y)
* 50.0,
TraversalConfig {
min_tgt_dist: 1.25,
..self.traversal_config
},
) {
controller.inputs.move_dir =
bearing.xy().try_normalized().unwrap_or_else(Vec2::zero) * speed;
self.jump_if(bearing.z > 1.5, controller);
controller.inputs.move_z = bearing.z;
}
}
/// Attempt to consume a healing item, and return whether any healing items
/// were queued. Callers should use this to implement a delay so that
/// the healing isn't interrupted. If `relaxed` is `true`, we allow eating
/// food and prioritise healing.
fn heal_self(&self, _agent: &mut Agent, controller: &mut Controller, relaxed: bool) -> bool {
let healing_value = |item: &Item| {
let mut value = 0.0;
if let ItemKind::Consumable { kind, effects, .. } = &item.kind {
if matches!(kind, ConsumableKind::Drink)
|| (relaxed && matches!(kind, ConsumableKind::Food))
{
for effect in effects.iter() {
use BuffKind::*;
match effect {
Effect::Health(HealthChange { amount, .. }) => {
value += *amount;
},
Effect::Buff(BuffEffect { kind, data, .. })
if matches!(kind, Regeneration | Saturation | Potion) =>
{
value += data.strength
* data.duration.map_or(0.0, |d| d.as_secs() as f32);
},
_ => {},
}
}
}
}
value as i32
};
let item = self
.inventory
.slots_with_id()
.filter_map(|(id, slot)| match slot {
Some(item) if healing_value(item) > 0 => Some((id, item)),
_ => None,
})
.max_by_key(|(_, item)| {
if relaxed {
-healing_value(item)
} else {
healing_value(item)
}
});
if let Some((id, _)) = item {
use comp::inventory::slot::Slot;
controller.push_action(ControlAction::InventoryAction(InventoryAction::Use(
Slot::Inventory(id),
)));
true
} else {
false
}
}
fn choose_target(&self, agent: &mut Agent, controller: &mut Controller, read_data: &ReadData) {
agent.action_state.timer = 0.0;
let mut aggro_on = false;
let get_pos = |entity| read_data.positions.get(entity);
let get_enemy = |entity: EcsEntity| {
if self.is_enemy(entity, read_data) {
Some(entity)
} else if self.should_defend(entity, read_data) {
if let Some(attacker) = get_attacker(entity, read_data) {
if !self.passive_towards(attacker, read_data) {
// aggro_on: attack immediately, do not warn/menace.
aggro_on = true;
Some(attacker)
} else {
None
}
} else {
None
}
} else {
None
}
};
let is_valid_target = |entity| {
read_data.healths.get(entity).map_or(false, |health| {
!health.is_dead && !is_invulnerable(entity, read_data)
})
};
// TODO: This is a temporary hack. Remove this once footsteps are emitted and
// agents are capable of detecting when someone is directly behind them.
let within_listen_dist = |e_pos: &Pos| {
let listen_dist = agent.psyche.listen_dist;
e_pos.0.distance_squared(self.pos.0) < listen_dist.powi(2)
};
let is_detected = |entity: EcsEntity, e_pos: &Pos| {
let chance = thread_rng().gen_bool(0.3);
(within_listen_dist(e_pos) && chance)
|| self.can_see_entity(entity, e_pos, agent, controller, read_data)
};
// Search the area.
// TODO: choose target by more than just distance
let common::CachedSpatialGrid(grid) = self.cached_spatial_grid;
let target = grid
.in_circle_aabr(self.pos.0.xy(), agent.psyche.search_dist())
.filter(|entity| is_valid_target(*entity))
.filter_map(get_enemy)
.filter_map(|entity| get_pos(entity).map(|pos| (entity, pos)))
.filter(|(entity, e_pos)| is_detected(*entity, e_pos))
.min_by_key(|(_, e_pos)| (e_pos.0.distance_squared(self.pos.0) * 100.0) as i32)
.map(|(entity, _)| entity);
if agent.target.is_none() && target.is_some() {
if aggro_on {
controller.push_utterance(UtteranceKind::Angry);
} else {
controller.push_utterance(UtteranceKind::Surprised);
}
}
// Change target to new target.
agent.target = target.map(|target| Target {
target,
hostile: true,
selected_at: read_data.time.0,
aggro_on,
});
}
fn attack(
&self,
agent: &mut Agent,
controller: &mut Controller,
tgt_data: &TargetData,
read_data: &ReadData,
rng: &mut impl Rng,
) {
let tool_tactic = |tool_kind| match tool_kind {
ToolKind::Bow => Tactic::Bow,
ToolKind::Staff => Tactic::Staff,
ToolKind::Sceptre => Tactic::Sceptre,
ToolKind::Hammer => Tactic::Hammer,
ToolKind::Sword | ToolKind::Blowgun => Tactic::Sword,
ToolKind::Axe => Tactic::Axe,
_ => Tactic::SimpleMelee,
};
let tactic = self
.inventory
.equipped(EquipSlot::ActiveMainhand)
.as_ref()
.map(|item| {
if let Some(ability_spec) = item.ability_spec() {
match ability_spec {
AbilitySpec::Custom(spec) => match spec.as_str() {
"Oni" | "Sword Simple" => Tactic::Sword,
"Staff Simple" => Tactic::Staff,
"Bow Simple" => Tactic::Bow,
"Stone Golem" => Tactic::StoneGolem,
"Quad Med Quick" => Tactic::CircleCharge {
radius: 3,
circle_time: 2,
},
"Quad Med Jump" => Tactic::QuadMedJump,
"Quad Med Charge" => Tactic::CircleCharge {
radius: 6,
circle_time: 1,
},
"Quad Med Basic" => Tactic::QuadMedBasic,
"Asp" | "Maneater" => Tactic::QuadLowRanged,
"Quad Low Breathe" | "Quad Low Beam" | "Basilisk" => {
Tactic::QuadLowBeam
},
"Quad Low Tail" | "Husk Brute" => Tactic::TailSlap,
"Quad Low Quick" => Tactic::QuadLowQuick,
"Quad Low Basic" => Tactic::QuadLowBasic,
"Theropod Basic" | "Theropod Bird" => Tactic::Theropod,
// Arthropods
"Antlion" => Tactic::ArthropodMelee,
"Tarantula" | "Horn Beetle" => Tactic::ArthropodAmbush,
"Weevil" | "Black Widow" => Tactic::ArthropodRanged,
"Theropod Charge" => Tactic::CircleCharge {
radius: 6,
circle_time: 1,
},
"Turret" => Tactic::Turret,
"Haniwa Sentry" => Tactic::RotatingTurret,
"Bird Large Breathe" => Tactic::BirdLargeBreathe,
"Bird Large Fire" => Tactic::BirdLargeFire,
"Bird Large Basic" => Tactic::BirdLargeBasic,
"Mindflayer" => Tactic::Mindflayer,
"Minotaur" => Tactic::Minotaur,
"Clay Golem" => Tactic::ClayGolem,
"Tidal Warrior" => Tactic::TidalWarrior,
"Tidal Totem"
| "Tornado"
| "Gnarling Totem Red"
| "Gnarling Totem Green"
| "Gnarling Totem White" => Tactic::RadialTurret,
"Yeti" => Tactic::Yeti,
"Harvester" => Tactic::Harvester,
"Gnarling Dagger" => Tactic::SimpleBackstab,
"Gnarling Blowgun" => Tactic::ElevatedRanged,
"Deadwood" => Tactic::Deadwood,
"Mandragora" => Tactic::Mandragora,
"Wood Golem" => Tactic::WoodGolem,
"Gnarling Chieftain" => Tactic::GnarlingChieftain,
_ => Tactic::SimpleMelee,
},
AbilitySpec::Tool(tool_kind) => tool_tactic(*tool_kind),
}
} else if let ItemKind::Tool(tool) = &item.kind() {
tool_tactic(tool.kind)
} else {
Tactic::SimpleMelee
}
})
.unwrap_or(Tactic::SimpleMelee);
// Wield the weapon as running towards the target
controller.push_action(ControlAction::Wield);
let min_attack_dist = (self.body.map_or(0.5, |b| b.max_radius()) + DEFAULT_ATTACK_RANGE)
* self.scale
+ tgt_data.body.map_or(0.5, |b| b.max_radius()) * tgt_data.scale.map_or(1.0, |s| s.0);
let dist_sqrd = self.pos.0.distance_squared(tgt_data.pos.0);
let angle = self
.ori
.look_vec()
.angle_between(tgt_data.pos.0 - self.pos.0)
.to_degrees();
let angle_xy = self
.ori
.look_vec()
.xy()
.angle_between((tgt_data.pos.0 - self.pos.0).xy())
.to_degrees();
let eye_offset = self.body.map_or(0.0, |b| b.eye_height());
let tgt_eye_height = tgt_data.body.map_or(0.0, |b| b.eye_height());
let tgt_eye_offset = tgt_eye_height +
// Special case for jumping attacks to jump at the body
// of the target and not the ground around the target
// For the ranged it is to shoot at the feet and not
// the head to get splash damage
if tactic == Tactic::QuadMedJump {
1.0
} else if matches!(tactic, Tactic::QuadLowRanged) {
-1.0
} else {
0.0
};
// FIXME:
// 1) Retrieve actual projectile speed!
// We have to assume projectiles are faster than base speed because there are
// skills that increase it, and in most cases this will cause agents to
// overshoot
//
// 2) We use eye_offset-s which isn't actually ideal.
// Some attacks (beam for example) may use different offsets,
// we should probably use offsets from corresponding states.
//
// 3) Should we even have this big switch?
// Not all attacks may want their direction overwritten.
// And this is quite hard to debug when you don't see it in actual
// attack handler.
if let Some(dir) = match self.char_state {
CharacterState::ChargedRanged(c) if dist_sqrd > 0.0 => {
let charge_factor =
c.timer.as_secs_f32() / c.static_data.charge_duration.as_secs_f32();
let projectile_speed = c.static_data.initial_projectile_speed
+ charge_factor * c.static_data.scaled_projectile_speed;
aim_projectile(
projectile_speed,
self.pos.0
+ self.body.map_or(Vec3::zero(), |body| {
body.projectile_offsets(self.ori.look_vec())
}),
Vec3::new(
tgt_data.pos.0.x,
tgt_data.pos.0.y,
tgt_data.pos.0.z + tgt_eye_offset,
),
)
},
CharacterState::BasicRanged(c) => {
let offset_z = match c.static_data.projectile {
// Aim fireballs at feet instead of eyes for splash damage
ProjectileConstructor::Fireball {
damage: _,
radius: _,
energy_regen: _,
min_falloff: _,
} => 0.0,
_ => tgt_eye_offset,
};
let projectile_speed = c.static_data.projectile_speed;
aim_projectile(
projectile_speed,
self.pos.0
+ self.body.map_or(Vec3::zero(), |body| {
body.projectile_offsets(self.ori.look_vec())
}),
Vec3::new(
tgt_data.pos.0.x,
tgt_data.pos.0.y,
tgt_data.pos.0.z + offset_z,
),
)
},
CharacterState::RepeaterRanged(c) => {
let projectile_speed = c.static_data.projectile_speed;
aim_projectile(
projectile_speed,
self.pos.0
+ self.body.map_or(Vec3::zero(), |body| {
body.projectile_offsets(self.ori.look_vec())
}),
Vec3::new(
tgt_data.pos.0.x,
tgt_data.pos.0.y,
tgt_data.pos.0.z + tgt_eye_offset,
),
)
},
CharacterState::LeapMelee(_) if matches!(tactic, Tactic::Hammer | Tactic::Axe) => {
let direction_weight = match tactic {
Tactic::Hammer => 0.1,
Tactic::Axe => 0.3,
_ => unreachable!("Direction weight called on incorrect tactic."),
};
let tgt_pos = tgt_data.pos.0;
let self_pos = self.pos.0;
let delta_x = (tgt_pos.x - self_pos.x) * direction_weight;
let delta_y = (tgt_pos.y - self_pos.y) * direction_weight;
Dir::from_unnormalized(Vec3::new(delta_x, delta_y, -1.0))
},
CharacterState::BasicBeam(_) => {
let aim_from = self.body.map_or(self.pos.0, |body| {
self.pos.0
+ basic_beam::beam_offsets(
body,
controller.inputs.look_dir,
self.ori.look_vec(),
// Try to match animation by getting some context
self.vel.0 - self.physics_state.ground_vel,
self.physics_state.on_ground,
)
});
let aim_to = Vec3::new(
tgt_data.pos.0.x,
tgt_data.pos.0.y,
tgt_data.pos.0.z + tgt_eye_offset,
);
Dir::from_unnormalized(aim_to - aim_from)
},
_ => {
let aim_from = Vec3::new(self.pos.0.x, self.pos.0.y, self.pos.0.z + eye_offset);
let aim_to = Vec3::new(
tgt_data.pos.0.x,
tgt_data.pos.0.y,
tgt_data.pos.0.z + tgt_eye_offset,
);
Dir::from_unnormalized(aim_to - aim_from)
},
} {
controller.inputs.look_dir = dir;
}
let attack_data = AttackData {
min_attack_dist,
dist_sqrd,
angle,
angle_xy,
};
// Match on tactic. Each tactic has different controls depending on the distance
// from the agent to the target.
match tactic {
Tactic::SimpleMelee => {
self.handle_simple_melee(agent, controller, &attack_data, tgt_data, read_data, rng)
},
Tactic::Axe => {
self.handle_axe_attack(agent, controller, &attack_data, tgt_data, read_data, rng)
},
Tactic::Hammer => {
self.handle_hammer_attack(agent, controller, &attack_data, tgt_data, read_data, rng)
},
Tactic::Sword => {
self.handle_sword_attack(agent, controller, &attack_data, tgt_data, read_data, rng)
},
Tactic::Bow => {
self.handle_bow_attack(agent, controller, &attack_data, tgt_data, read_data, rng)
},
Tactic::Staff => {
self.handle_staff_attack(agent, controller, &attack_data, tgt_data, read_data, rng)
},
Tactic::Sceptre => self.handle_sceptre_attack(
agent,
controller,
&attack_data,
tgt_data,
read_data,
rng,
),
Tactic::StoneGolem => {
self.handle_stone_golem_attack(agent, controller, &attack_data, tgt_data, read_data)
},
Tactic::CircleCharge {
radius,
circle_time,
} => self.handle_circle_charge_attack(
agent,
controller,
&attack_data,
tgt_data,
read_data,
radius,
circle_time,
rng,
),
Tactic::QuadLowRanged => self.handle_quadlow_ranged_attack(
agent,
controller,
&attack_data,
tgt_data,
read_data,
),
Tactic::TailSlap => {
self.handle_tail_slap_attack(agent, controller, &attack_data, tgt_data, read_data)
},
Tactic::QuadLowQuick => self.handle_quadlow_quick_attack(
agent,
controller,
&attack_data,
tgt_data,
read_data,
),
Tactic::QuadLowBasic => self.handle_quadlow_basic_attack(
agent,
controller,
&attack_data,
tgt_data,
read_data,
),
Tactic::QuadMedJump => self.handle_quadmed_jump_attack(
agent,
controller,
&attack_data,
tgt_data,
read_data,
),
Tactic::QuadMedBasic => self.handle_quadmed_basic_attack(
agent,
controller,
&attack_data,
tgt_data,
read_data,
),
Tactic::QuadLowBeam => self.handle_quadlow_beam_attack(
agent,
controller,
&attack_data,
tgt_data,
read_data,
),
Tactic::Theropod => {
self.handle_theropod_attack(agent, controller, &attack_data, tgt_data, read_data)
},
Tactic::ArthropodMelee => self.handle_arthropod_melee_attack(
agent,
controller,
&attack_data,
tgt_data,
read_data,
),
Tactic::ArthropodAmbush => self.handle_arthropod_ambush_attack(
agent,
controller,
&attack_data,
tgt_data,
read_data,
rng,
),
Tactic::ArthropodRanged => self.handle_arthropod_ranged_attack(
agent,
controller,
&attack_data,
tgt_data,
read_data,
),
Tactic::Turret => {
self.handle_turret_attack(agent, controller, &attack_data, tgt_data, read_data)
},
Tactic::FixedTurret => self.handle_fixed_turret_attack(
agent,
controller,
&attack_data,
tgt_data,
read_data,
),
Tactic::RotatingTurret => {
self.handle_rotating_turret_attack(agent, controller, tgt_data, read_data)
},
Tactic::Mindflayer => self.handle_mindflayer_attack(
agent,
controller,
&attack_data,
tgt_data,
read_data,
rng,
),
Tactic::BirdLargeFire => self.handle_birdlarge_fire_attack(
agent,
controller,
&attack_data,
tgt_data,
read_data,
rng,
),
// Mostly identical to BirdLargeFire but tweaked for flamethrower instead of shockwave
Tactic::BirdLargeBreathe => self.handle_birdlarge_breathe_attack(
agent,
controller,
&attack_data,
tgt_data,
read_data,
rng,
),
Tactic::BirdLargeBasic => self.handle_birdlarge_basic_attack(
agent,
controller,
&attack_data,
tgt_data,
read_data,
),
Tactic::Minotaur => {
self.handle_minotaur_attack(agent, controller, &attack_data, tgt_data, read_data)
},
Tactic::ClayGolem => {
self.handle_clay_golem_attack(agent, controller, &attack_data, tgt_data, read_data)
},
Tactic::TidalWarrior => self.handle_tidal_warrior_attack(
agent,
controller,
&attack_data,
tgt_data,
read_data,
),
Tactic::RadialTurret => self.handle_radial_turret_attack(controller),
Tactic::Yeti => {
self.handle_yeti_attack(agent, controller, &attack_data, tgt_data, read_data)
},
Tactic::Harvester => {
self.handle_harvester_attack(agent, controller, &attack_data, tgt_data, read_data)
},
Tactic::SimpleBackstab => {
self.handle_simple_backstab(agent, controller, &attack_data, tgt_data, read_data)
},
Tactic::ElevatedRanged => {
self.handle_elevated_ranged(agent, controller, &attack_data, tgt_data, read_data)
},
Tactic::Deadwood => {
self.handle_deadwood(agent, controller, &attack_data, tgt_data, read_data)
},
Tactic::Mandragora => {
self.handle_mandragora(agent, controller, &attack_data, tgt_data, read_data)
},
Tactic::WoodGolem => {
self.handle_wood_golem(agent, controller, &attack_data, tgt_data, read_data)
},
Tactic::GnarlingChieftain => self.handle_gnarling_chieftain(
agent,
controller,
&attack_data,
tgt_data,
read_data,
rng,
),
}
}
fn handle_sounds_heard(
&self,
agent: &mut Agent,
controller: &mut Controller,
read_data: &ReadData,
rng: &mut impl Rng,
) {
agent.forget_old_sounds(read_data.time.0);
if is_invulnerable(*self.entity, read_data) {
self.idle(agent, controller, read_data, rng);
return;
}
if let Some(sound) = agent.sounds_heard.last() {
let sound_pos = Pos(sound.pos);
let dist_sqrd = self.pos.0.distance_squared(sound_pos.0);
// NOTE: There is an implicit distance requirement given that sound volume
// disipates as it travels, but we will not want to flee if a sound is super
// loud but heard from a great distance, regardless of how loud it was.
// `is_close` is this limiter.
let is_close = dist_sqrd < 35.0_f32.powi(2);
let sound_was_loud = sound.vol >= 10.0;
let sound_was_threatening = sound_was_loud
|| matches!(sound.kind, SoundKind::Utterance(UtteranceKind::Scream, _));
let has_enemy_alignment = matches!(self.alignment, Some(Alignment::Enemy));
// FIXME: We need to be able to change the name of a guard without breaking this
// logic. The `Mark` enum from common::agent could be used to match with
// `agent::Mark::Guard`
let is_village_guard = read_data
.stats
.get(*self.entity)
.map_or(false, |stats| stats.name == *"Guard".to_string());
let follows_threatening_sounds = has_enemy_alignment || is_village_guard;
// TODO: Awareness currently doesn't influence anything.
//agent.awareness += 0.5 * sound.vol;
if sound_was_threatening && is_close {
if !self.below_flee_health(agent) && follows_threatening_sounds {
self.follow(agent, controller, &read_data.terrain, &sound_pos);
} else if self.below_flee_health(agent) || !follows_threatening_sounds {
self.flee(&sound_pos, agent, controller, &read_data.terrain);
} else {
self.idle(agent, controller, read_data, rng);
}
} else {
self.idle(agent, controller, read_data, rng);
}
} else {
self.idle(agent, controller, read_data, rng);
}
}
fn attack_target_attacker(
&self,
agent: &mut Agent,
read_data: &ReadData,
controller: &mut Controller,
rng: &mut impl Rng,
) {
if let Some(Target { target, .. }) = agent.target {
if let Some(tgt_health) = read_data.healths.get(target) {
if let Some(by) = tgt_health.last_change.damage_by() {
if let Some(attacker) = get_entity_by_id(by.uid().0, read_data) {
if agent.target.is_none() {
controller.push_utterance(UtteranceKind::Angry);
}
agent.target = Some(Target::new(attacker, true, read_data.time.0, true));
if let Some(tgt_pos) = read_data.positions.get(attacker) {
if is_dead_or_invulnerable(attacker, read_data) {
// FIXME?: Shouldn't target be set to `None`?
// If is dead, then probably. If invulnerable, maybe not.
agent.target =
Some(Target::new(target, false, read_data.time.0, false));
self.idle(agent, controller, read_data, rng);
} else {
let target_data = TargetData::new(
tgt_pos,
read_data.bodies.get(target),
read_data.scales.get(target),
);
if let Some(tgt_name) =
read_data.stats.get(target).map(|stats| stats.name.clone())
{
agent.add_fight_to_memory(&tgt_name, read_data.time.0)
}
self.attack(agent, controller, &target_data, read_data, rng);
}
}
}
}
}
}
}
/// Directs the entity to path and move toward the target
/// If path is not Full, the entity will path to a location 50 units along
/// the vector between the entity and the target. The speed multiplier
/// multiplies the movement speed by a value less than 1.0.
/// A `None` value implies a multiplier of 1.0.
/// Returns `false` if the pathfinding algorithm fails to return a path
fn path_toward_target(
&self,
agent: &mut Agent,
controller: &mut Controller,
tgt_pos: Vec3<f32>,
read_data: &ReadData,
path: Path,
speed_multiplier: Option<f32>,
) -> bool {
let partial_path_tgt_pos = |pos_difference: Vec3<f32>| {
self.pos.0
+ PARTIAL_PATH_DIST * pos_difference.try_normalized().unwrap_or_else(Vec3::zero)
};
let pos_difference = tgt_pos - self.pos.0;
let pathing_pos = match path {
Path::Separate => {
let mut sep_vec: Vec3<f32> = Vec3::<f32>::zero();
for entity in read_data
.cached_spatial_grid
.0
.in_circle_aabr(self.pos.0.xy(), SEPARATION_DIST)
{
if let (Some(alignment), Some(other_alignment)) =
(self.alignment, read_data.alignments.get(entity))
{
if Alignment::passive_towards(*alignment, *other_alignment) {
if let (Some(pos), Some(body), Some(other_body)) = (
read_data.positions.get(entity),
self.body,
read_data.bodies.get(entity),
) {
let dist_xy = self.pos.0.xy().distance(pos.0.xy());
let spacing = body.spacing_radius() + other_body.spacing_radius();
if dist_xy < spacing {
let pos_diff = self.pos.0.xy() - pos.0.xy();
sep_vec += pos_diff.try_normalized().unwrap_or_else(Vec2::zero)
* ((spacing - dist_xy) / spacing);
}
}
}
}
}
partial_path_tgt_pos(
sep_vec * SEPARATION_BIAS + pos_difference * (1.0 - SEPARATION_BIAS),
)
},
Path::Full => tgt_pos,
Path::Partial => partial_path_tgt_pos(pos_difference),
};
let speed_multiplier = speed_multiplier.unwrap_or(1.0).min(1.0);
if let Some((bearing, speed)) = agent.chaser.chase(
&*read_data.terrain,
self.pos.0,
self.vel.0,
pathing_pos,
TraversalConfig {
min_tgt_dist: 1.25,
..self.traversal_config
},
) {
controller.inputs.move_dir =
bearing.xy().try_normalized().unwrap_or_else(Vec2::zero) * speed * speed_multiplier;
self.jump_if(bearing.z > 1.5, controller);
controller.inputs.move_z = bearing.z;
true
} else {
false
}
}
fn chat_npc_if_allowed_to_speak(
&self,
msg: impl ToString,
agent: &Agent,
event_emitter: &mut Emitter<'_, ServerEvent>,
) -> bool {
if agent.allowed_to_speak() {
self.chat_npc(msg, event_emitter);
true
} else {
false
}
}
fn jump_if(&self, condition: bool, controller: &mut Controller) {
if condition {
controller.push_basic_input(InputKind::Jump);
} else {
controller.push_cancel_input(InputKind::Jump)
}
}
fn chat_npc(&self, msg: impl ToString, event_emitter: &mut Emitter<'_, ServerEvent>) {
event_emitter.emit(ServerEvent::Chat(UnresolvedChatMsg::npc(
*self.uid,
msg.to_string(),
)));
}
fn emit_scream(&self, time: f64, event_emitter: &mut Emitter<'_, ServerEvent>) {
if let Some(body) = self.body {
event_emitter.emit(ServerEvent::Sound {
sound: Sound::new(
SoundKind::Utterance(UtteranceKind::Scream, *body),
self.pos.0,
13.0,
time,
),
});
}
}
fn cry_out(
&self,
agent: &Agent,
event_emitter: &mut Emitter<'_, ServerEvent>,
read_data: &ReadData,
) {
let has_enemy_alignment = matches!(self.alignment, Some(Alignment::Enemy));
if has_enemy_alignment {
// FIXME: If going to use "cultist + low health + fleeing" string, make sure
// they are each true.
self.chat_npc_if_allowed_to_speak(
"npc.speech.cultist_low_health_fleeing",
agent,
event_emitter,
);
} else if is_villager(self.alignment) {
self.chat_npc_if_allowed_to_speak(
"npc.speech.villager_under_attack",
agent,
event_emitter,
);
self.emit_scream(read_data.time.0, event_emitter);
}
}
fn exclaim_relief_about_enemy_dead(
&self,
agent: &Agent,
event_emitter: &mut Emitter<'_, ServerEvent>,
) {
if is_villager(self.alignment) {
self.chat_npc_if_allowed_to_speak(
"npc.speech.villager_enemy_killed",
agent,
event_emitter,
);
}
}
fn below_flee_health(&self, agent: &Agent) -> bool {
self.damage.min(1.0) < agent.psyche.flee_health
}
fn is_more_dangerous_than_target(
&self,
entity: EcsEntity,
target: Target,
read_data: &ReadData,
) -> bool {
let entity_pos = read_data.positions.get(entity);
let target_pos = read_data.positions.get(target.target);
entity_pos.map_or(false, |entity_pos| {
target_pos.map_or(true, |target_pos| {
// Fuzzy factor that makes it harder for players to cheese enemies by making
// them quickly flip aggro between two players.
// It does this by only switching aggro if the entity is closer to the enemy by
// a specific proportional threshold.
const FUZZY_DIST_COMPARISON: f32 = 0.8;
let is_target_further = target_pos.0.distance(entity_pos.0)
< target_pos.0.distance(entity_pos.0) * FUZZY_DIST_COMPARISON;
let is_entity_hostile = read_data
.alignments
.get(entity)
.zip(self.alignment)
.map_or(false, |(entity, me)| me.hostile_towards(*entity));
// Consider entity more dangerous than target if entity is closer or if target
// had not triggered aggro.
!target.aggro_on || (is_target_further && is_entity_hostile)
})
})
}
fn remembers_fight_with(&self, other: EcsEntity, read_data: &ReadData) -> bool {
let name = || read_data.stats.get(other).map(|stats| stats.name.clone());
self.rtsim_entity.map_or(false, |rtsim_entity| {
name().map_or(false, |name| {
rtsim_entity.brain.remembers_fight_with_character(&name)
})
})
}
fn is_enemy(&self, entity: EcsEntity, read_data: &ReadData) -> bool {
let other_alignment = read_data.alignments.get(entity);
(entity != *self.entity)
&& !self.passive_towards(entity, read_data)
&& (are_our_owners_hostile(self.alignment, other_alignment, read_data)
|| self.remembers_fight_with(entity, read_data)
|| (is_villager(self.alignment) && is_dressed_as_cultist(entity, read_data)))
}
fn should_defend(&self, entity: EcsEntity, read_data: &ReadData) -> bool {
let entity_alignment = read_data.alignments.get(entity);
let we_are_friendly = entity_alignment.map_or(false, |entity_alignment| {
self.alignment.map_or(false, |alignment| {
!alignment.hostile_towards(*entity_alignment)
})
});
let we_share_species = read_data.bodies.get(entity).map_or(false, |entity_body| {
self.body.map_or(false, |body| {
entity_body.is_same_species_as(body)
|| (entity_body.is_humanoid() && body.is_humanoid())
})
});
let self_owns_entity =
matches!(entity_alignment, Some(Alignment::Owned(ouid)) if *self.uid == *ouid);
(we_are_friendly && we_share_species)
|| (is_village_guard(*self.entity, read_data) && is_villager(entity_alignment))
|| self_owns_entity
}
fn passive_towards(&self, entity: EcsEntity, read_data: &ReadData) -> bool {
if let (Some(self_alignment), Some(other_alignment)) =
(self.alignment, read_data.alignments.get(entity))
{
self_alignment.passive_towards(*other_alignment)
} else {
false
}
}
fn can_see_entity(
&self,
other: EcsEntity,
other_pos: &Pos,
agent: &Agent,
controller: &Controller,
read_data: &ReadData,
) -> bool {
let other_stealth_coefficient = {
let is_other_stealthy = read_data
.char_states
.get(other)
.map_or(false, CharacterState::is_stealthy);
if is_other_stealthy {
// TODO: We shouldn't have to check CharacterState. This should be factored in
// by the function (such as the one we're calling below) that supposedly
// computes a coefficient given stealthy-ness.
compute_stealth_coefficient(read_data.inventories.get(other))
} else {
1.0
}
};
let dist_sqrd = other_pos.0.distance_squared(self.pos.0);
let within_sight_dist = {
let sight_dist = agent.psyche.sight_dist / other_stealth_coefficient;
dist_sqrd < sight_dist.powi(2)
};
let within_fov = (other_pos.0 - self.pos.0)
.try_normalized()
.map_or(false, |v| v.dot(*controller.inputs.look_dir) > 0.15);
let other_body = read_data.bodies.get(other);
within_sight_dist
&& within_fov
&& entities_have_line_of_sight(self.pos, self.body, other_pos, other_body, read_data)
}
}
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