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monmove.cpp
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// Monster movement code; essentially, the AI
#include "monster.h" // IWYU pragma: associated
#include <algorithm>
#include <cfloat>
#include <climits>
#include <cmath>
#include <cstdlib>
#include <iterator>
#include <list>
#include <memory>
#include <ostream>
#include <string>
#include <unordered_map>
#include "behavior.h"
#include "bionics.h"
#include "cached_options.h"
#include "cata_utility.h"
#include "character.h"
#include "colony.h"
#include "creature_tracker.h"
#include "debug.h"
#include "field.h"
#include "field_type.h"
#include "flood_fill.h"
#include "game.h"
#include "game_constants.h"
#include "line.h"
#include "make_static.h"
#include "map.h"
#include "map_iterator.h"
#include "mapdata.h"
#include "mattack_common.h"
#include "memory_fast.h"
#include "messages.h"
#include "monfaction.h"
#include "monster_oracle.h"
#include "mtype.h"
#include "npc.h"
#include "options.h"
#include "pathfinding.h"
#include "pimpl.h"
#include "rng.h"
#include "scent_map.h"
#include "sounds.h"
#include "string_formatter.h"
#include "submap.h"
#include "tileray.h"
#include "translations.h"
#include "trap.h"
#include "units.h"
#include "vehicle.h"
#include "viewer.h"
#include "vpart_position.h"
static const damage_type_id damage_cut( "cut" );
static const efftype_id effect_bouldering( "bouldering" );
static const efftype_id effect_countdown( "countdown" );
static const efftype_id effect_docile( "docile" );
static const efftype_id effect_downed( "downed" );
static const efftype_id effect_dragging( "dragging" );
static const efftype_id effect_grabbed( "grabbed" );
static const efftype_id effect_harnessed( "harnessed" );
static const efftype_id effect_led_by_leash( "led_by_leash" );
static const efftype_id effect_no_sight( "no_sight" );
static const efftype_id effect_operating( "operating" );
static const efftype_id effect_pacified( "pacified" );
static const efftype_id effect_pushed( "pushed" );
static const efftype_id effect_stumbled_into_invisible( "stumbled_into_invisible" );
static const efftype_id effect_stunned( "stunned" );
static const field_type_str_id field_fd_last_known( "fd_last_known" );
static const flag_id json_flag_GRAB( "GRAB" );
static const flag_id json_flag_GRAB_FILTER( "GRAB_FILTER" );
static const itype_id itype_pressurized_tank( "pressurized_tank" );
static const material_id material_iflesh( "iflesh" );
static const mon_flag_str_id mon_flag_ACIDPROOF( "ACIDPROOF" );
static const mon_flag_str_id mon_flag_ACIDTRAIL( "ACIDTRAIL" );
static const mon_flag_str_id mon_flag_AQUATIC( "AQUATIC" );
static const mon_flag_str_id mon_flag_ATTACKMON( "ATTACKMON" );
static const mon_flag_str_id mon_flag_CAN_OPEN_DOORS( "CAN_OPEN_DOORS" );
static const mon_flag_str_id mon_flag_DRIPS_GASOLINE( "DRIPS_GASOLINE" );
static const mon_flag_str_id mon_flag_DRIPS_NAPALM( "DRIPS_NAPALM" );
static const mon_flag_str_id mon_flag_ELECTRIC( "ELECTRIC" );
static const mon_flag_str_id mon_flag_FIREPROOF( "FIREPROOF" );
static const mon_flag_str_id mon_flag_GROUP_BASH( "GROUP_BASH" );
static const mon_flag_str_id mon_flag_GROUP_MORALE( "GROUP_MORALE" );
static const mon_flag_str_id mon_flag_IMMOBILE( "IMMOBILE" );
static const mon_flag_str_id mon_flag_INSECTICIDEPROOF( "INSECTICIDEPROOF" );
static const mon_flag_str_id mon_flag_KEENNOSE( "KEENNOSE" );
static const mon_flag_str_id mon_flag_KEEP_DISTANCE( "KEEP_DISTANCE" );
static const mon_flag_str_id mon_flag_LOUDMOVES( "LOUDMOVES" );
static const mon_flag_str_id mon_flag_NO_BREATHE( "NO_BREATHE" );
static const mon_flag_str_id mon_flag_PACIFIST( "PACIFIST" );
static const mon_flag_str_id mon_flag_PATH_AVOID_DANGER_1( "PATH_AVOID_DANGER_1" );
static const mon_flag_str_id mon_flag_PATH_AVOID_DANGER_2( "PATH_AVOID_DANGER_2" );
static const mon_flag_str_id mon_flag_PATH_AVOID_FALL( "PATH_AVOID_FALL" );
static const mon_flag_str_id mon_flag_PATH_AVOID_FIRE( "PATH_AVOID_FIRE" );
static const mon_flag_str_id mon_flag_PRIORITIZE_TARGETS( "PRIORITIZE_TARGETS" );
static const mon_flag_str_id mon_flag_PUSH_MON( "PUSH_MON" );
static const mon_flag_str_id mon_flag_PUSH_VEH( "PUSH_VEH" );
static const mon_flag_str_id mon_flag_QUEEN( "QUEEN" );
static const mon_flag_str_id mon_flag_RIDEABLE_MECH( "RIDEABLE_MECH" );
static const mon_flag_str_id mon_flag_SEES( "SEES" );
static const mon_flag_str_id mon_flag_SHORTACIDTRAIL( "SHORTACIDTRAIL" );
static const mon_flag_str_id mon_flag_SLUDGETRAIL( "SLUDGETRAIL" );
static const mon_flag_str_id mon_flag_SMALLSLUDGETRAIL( "SMALLSLUDGETRAIL" );
static const mon_flag_str_id mon_flag_SMELLS( "SMELLS" );
static const mon_flag_str_id mon_flag_STUMBLES( "STUMBLES" );
static const mon_flag_str_id mon_flag_SUNDEATH( "SUNDEATH" );
static const mon_flag_str_id mon_flag_SWARMS( "SWARMS" );
static const mon_flag_str_id mon_flag_WEBWALK( "WEBWALK" );
static const species_id species_FUNGUS( "FUNGUS" );
static const species_id species_ZOMBIE( "ZOMBIE" );
bool monster::is_immune_field( const field_type_id &fid ) const
{
if( fid == fd_fungal_haze ) {
return has_flag( mon_flag_NO_BREATHE ) || type->in_species( species_FUNGUS );
}
if( fid == fd_fungicidal_gas ) {
return !type->in_species( species_FUNGUS );
}
if( fid == fd_insecticidal_gas ) {
return !made_of( material_iflesh ) || has_flag( mon_flag_INSECTICIDEPROOF );
}
if( fid == fd_web ) {
return has_flag( mon_flag_WEBWALK );
}
if( fid == fd_sludge || fid == fd_sap ) {
return flies();
}
const field_type &ft = fid.obj();
if( ft.has_fume ) {
return has_flag( mon_flag_NO_BREATHE );
}
if( ft.has_acid ) {
return has_flag( mon_flag_ACIDPROOF ) || flies();
}
if( ft.has_fire ) {
return has_flag( mon_flag_FIREPROOF );
}
if( ft.has_elec ) {
return has_flag( mon_flag_ELECTRIC );
}
if( ft.immune_mtypes.count( type->id ) > 0 ) {
return true;
}
// No specific immunity was found, so fall upwards
return Creature::is_immune_field( fid );
}
static bool z_is_valid( int z )
{
return z >= -OVERMAP_DEPTH && z <= OVERMAP_HEIGHT;
}
bool monster::will_move_to( const tripoint &p ) const
{
map &here = get_map();
if( here.impassable( p ) ) {
if( digging() ) {
if( !here.has_flag( ter_furn_flag::TFLAG_BURROWABLE, p ) ) {
return false;
}
} else if( !( can_climb() && here.has_flag( ter_furn_flag::TFLAG_CLIMBABLE, p ) ) ) {
return false;
}
}
if( !here.has_vehicle_floor( p ) ) {
if( ( !can_submerge() && !flies() ) && here.has_flag( ter_furn_flag::TFLAG_DEEP_WATER, p ) ) {
return false;
}
}
if( digs() && !here.has_flag( ter_furn_flag::TFLAG_DIGGABLE, p ) &&
!here.has_flag( ter_furn_flag::TFLAG_BURROWABLE, p ) ) {
return false;
}
if( has_flag( mon_flag_AQUATIC ) && (
!here.has_flag( ter_furn_flag::TFLAG_SWIMMABLE, p ) ||
// AQUATIC (confined to water) monster avoid vehicles, unless they are already underneath one
( here.veh_at( p ) && !here.veh_at( pos() ) )
) ) {
return false;
}
if( has_flag( mon_flag_SUNDEATH ) && g->is_in_sunlight( p ) ) {
return false;
}
if( get_size() > creature_size::medium &&
here.has_flag_ter( ter_furn_flag::TFLAG_SMALL_PASSAGE, p ) ) {
return false; // if a large critter, can't move through tight passages
}
return true;
}
bool monster::know_danger_at( const tripoint &p ) const
{
map &here = get_map();
// Various avoiding behaviors.
bool avoid_fire = has_flag( mon_flag_PATH_AVOID_FIRE );
bool avoid_fall = has_flag( mon_flag_PATH_AVOID_FALL );
bool avoid_simple = has_flag( mon_flag_PATH_AVOID_DANGER_1 );
bool avoid_complex = has_flag( mon_flag_PATH_AVOID_DANGER_2 );
bool avoid_sharp = get_pathfinding_settings().avoid_sharp;
bool avoid_traps = get_pathfinding_settings().avoid_traps;
/*
* Because some avoidance behaviors are supersets of others,
* we can cascade through the implications. Complex implies simple,
* and simple implies fire and fall.
* unfortunately, fall does not necessarily imply fire, nor the converse.
*/
if( avoid_complex ) {
avoid_simple = true;
avoid_traps = true;
}
if( avoid_simple ) {
avoid_fire = true;
avoid_fall = true;
avoid_sharp = true;
}
// technically this will shortcut in evaluation from fire or fall
// before hitting simple or complex but this is more explicit
if( avoid_fire || avoid_fall || avoid_simple ||
avoid_complex || avoid_traps || avoid_sharp ) {
const ter_id target = here.ter( p );
if( !here.has_vehicle_floor( p ) ) {
// Don't enter lava if we have any concept of heat being bad
if( avoid_fire && target == t_lava ) {
return false;
}
if( avoid_fall ) {
// Don't throw ourselves off cliffs if we have a concept of falling
if( !here.has_floor_or_water( p ) && !flies() ) {
return false;
}
// Don't enter open pits ever unless tiny, can fly or climb well
if( !( type->size == creature_size::tiny || can_climb() ) &&
( target == t_pit || target == t_pit_spiked || target == t_pit_glass ) ) {
return false;
}
}
// Some things are only avoided if we're not attacking
if( attitude( &get_player_character() ) != MATT_ATTACK ) {
// Sharp terrain is ignored while attacking
if( avoid_sharp && here.has_flag( ter_furn_flag::TFLAG_SHARP, p ) &&
!( type->size == creature_size::tiny || flies() ||
get_armor_type( damage_cut, bodypart_id( "torso" ) ) >= 10 ) ) {
return false;
}
}
// Don't step on any traps (if we can see)
const trap &target_trap = here.tr_at( p );
if( avoid_traps && has_flag( mon_flag_SEES ) &&
!target_trap.is_benign() && here.has_floor_or_water( p ) ) {
return false;
}
}
const field &target_field = here.field_at( p );
// Higher awareness is needed for identifying these as threats.
if( avoid_complex ) {
// Don't enter any dangerous fields
if( is_dangerous_fields( target_field ) ) {
return false;
}
}
// Without avoid_complex, only fire and electricity are checked for field avoidance.
if( avoid_fire && target_field.find_field( fd_fire ) && !is_immune_field( fd_fire ) ) {
return false;
}
if( avoid_simple && target_field.find_field( fd_electricity ) &&
!is_immune_field( fd_electricity ) ) {
return false;
}
}
return true;
}
bool monster::can_reach_to( const tripoint &p ) const
{
map &here = get_map();
if( p.z > pos().z && z_is_valid( pos().z ) ) {
if( here.has_flag( ter_furn_flag::TFLAG_RAMP_UP, tripoint( p.xy(), p.z - 1 ) ) ) {
return true;
}
if( !here.has_flag( ter_furn_flag::TFLAG_GOES_UP, pos() ) && here.has_floor( p ) ) {
// can't go through the roof
return false;
}
} else if( p.z < pos().z && z_is_valid( pos().z ) ) {
const tripoint above( p.xy(), p.z + 1 );
if( here.has_flag( ter_furn_flag::TFLAG_RAMP_DOWN, above ) ) {
return true;
}
if( !here.has_flag( ter_furn_flag::TFLAG_GOES_DOWN, pos() ) &&
( here.has_floor( above ) || ( !flies() && !here.has_floor_or_water( above ) ) ) ) {
// can't go through the floor
// Check floors for flying monsters movement
return false;
}
}
return true;
}
bool monster::can_move_to( const tripoint &p ) const
{
return can_reach_to( p ) && will_move_to( p ) && know_danger_at( p );
}
float monster::rate_target( Creature &c, float best, bool smart ) const
{
const FastDistanceApproximation d = rl_dist_fast( pos(), c.pos() );
if( d <= 0 ) {
return FLT_MAX;
}
// Check a very common and cheap case first
if( !smart && d >= best ) {
return FLT_MAX;
}
if( !sees( c ) ) {
return FLT_MAX;
}
if( !smart ) {
return static_cast<int>( d );
}
float power = c.power_rating();
monster *mon = dynamic_cast< monster * >( &c );
// Their attitude to us and not ours to them, so that bobcats won't get gunned down
if( mon != nullptr && mon->attitude_to( *this ) == Attitude::HOSTILE ) {
power += 2;
}
if( power > 0 ) {
return static_cast<int>( d ) / power;
}
return FLT_MAX;
}
struct monster_plan {
explicit monster_plan( const monster &mon );
// Bots are more intelligent than most living stuff
bool smart_planning;
bool fleeing;
bool docile;
const bool angers_hostile_weak;
const bool fears_hostile_weak;
const bool placate_hostile_weak;
const int angers_hostile_near;
const int angers_hostile_seen;
bool group_morale;
bool swarms;
// 8.6f is rating for tank drone 60 tiles away, moose 16 or boomer 33
float dist;
int max_sight_range;
const int angers_mating_season;
const int angers_cub_threatened;
const int fears_hostile_near;
const int fears_hostile_seen;
Creature *target = nullptr;
};
monster_plan::monster_plan( const monster &mon ) :
angers_hostile_weak( mon.type->has_anger_trigger( mon_trigger::HOSTILE_WEAK ) ),
fears_hostile_weak( mon.type->has_fear_trigger( mon_trigger::HOSTILE_WEAK ) ),
placate_hostile_weak( mon.type->has_placate_trigger( mon_trigger::HOSTILE_WEAK ) ),
angers_hostile_near( mon.type->has_anger_trigger( mon_trigger::HOSTILE_CLOSE ) ? 5 : 0 ),
angers_hostile_seen( mon.type->has_anger_trigger( mon_trigger::HOSTILE_SEEN ) ? rng( 0, 2 ) : 0 ),
angers_mating_season( mon.type->has_anger_trigger( mon_trigger::MATING_SEASON ) ? 3 : 0 ),
angers_cub_threatened( mon.type->has_anger_trigger( mon_trigger::PLAYER_NEAR_BABY ) ? 8 : 0 ),
fears_hostile_near( mon.type->has_fear_trigger( mon_trigger::HOSTILE_CLOSE ) ? 5 : 0 ),
fears_hostile_seen( mon.type->has_fear_trigger( mon_trigger::HOSTILE_SEEN ) ? rng( 0, 2 ) : 0 )
{
smart_planning = mon.has_flag( mon_flag_PRIORITIZE_TARGETS );
max_sight_range = std::max( mon.type->vision_day, mon.type->vision_night );
dist = !smart_planning ? max_sight_range : 8.6f;
fleeing = false;
docile = mon.friendly != 0 && mon.has_effect( effect_docile );
swarms = mon.has_flag( mon_flag_SWARMS );
group_morale = mon.has_flag( mon_flag_GROUP_MORALE ) && mon.morale < mon.type->morale;
}
void monster::anger_hostile_seen( const monster_plan &mon_plan )
{
if( mon_plan.fleeing ) {
// runng away, too busy to be angry
return;
}
// Decide that the player is too annoying, less likely than the other triggers
if( mon_plan.angers_hostile_seen && x_in_y( anger, 200 ) ) {
if( mon_plan.target->is_avatar() ) {
add_msg_debug( debugmode::DF_MONSTER, "%s's character aggro triggered by seeing you", name() );
} else {
add_msg_debug( debugmode::DF_MONSTER, "%s's character aggro triggered by seeing %s", name(),
mon_plan.target->as_npc()->name );
}
aggro_character = true;
}
}
void monster::anger_mating_season( const monster_plan &mon_plan )
{
if( mon_plan.angers_mating_season > 0 && anger <= 30 ) {
if( mating_angry() ) {
anger += mon_plan.angers_mating_season;
if( x_in_y( anger, 100 ) ) {
add_msg_debug( debugmode::DF_MONSTER, "%s's character aggro triggered by season", name() );
aggro_character = true;
}
}
}
}
void monster::anger_cub_threatened( monster_plan &mon_plan )
{
if( mon_plan.angers_cub_threatened < 0 ) {
// return early, not angered by cubs being threatened
return;
}
for( monster &tmp : g->all_monsters() ) {
if( type->baby_monster == tmp.type->id ) {
// baby nearby; is the player too close?
mon_plan.dist = tmp.rate_target( *mon_plan.target, mon_plan.dist, mon_plan.smart_planning );
if( mon_plan.dist <= 3 ) {
//proximity to baby; monster gets furious and less likely to flee
anger += mon_plan.angers_cub_threatened;
morale += mon_plan.angers_cub_threatened / 2;
add_msg_debug( debugmode::DF_MONSTER, "%s's character aggro triggered by threatening %s", name(),
tmp.name() );
aggro_character = true;
}
}
}
}
bool monster::mating_angry() const
{
bool mating_angry = false;
season_type season = season_of_year( calendar::turn );
for( const std::string &elem : type->baby_flags ) {
if( ( season == SUMMER && elem == "SUMMER" ) ||
( season == WINTER && elem == "WINTER" ) ||
( season == SPRING && elem == "SPRING" ) ||
( season == AUTUMN && elem == "AUTUMN" ) ) {
mating_angry = true;
break;
}
}
return mating_angry;
}
/** This is lazily evaluated in monster::plan(). Each monster in a zone is visited
* as it flood fills, then the zone number is incremented. At the end all monsters in
* the same zone will have the same zone number assigned, which can be used to have monsters in
* different zones ignore each other very cheaply.
*/
static void flood_fill_zone( Creature &origin )
{
static int zone_number = 1;
static int zone_tick = 1;
map &here = get_map();
if( here.get_visitable_zones_cache_dirty() ) {
zone_tick = zone_tick > 0 ? -1 : 1;
here.set_visitable_zones_cache_dirty( false );
zone_number = 1;
}
// This check insures we only flood fill when the target monster has an uninitialized zone,
// or if it has a zone from last turn. In other words it only triggers on
// the first monster in a zone each turn. We can detect this because the sign
// of the zone numbers changes on every invalidation.
int old_zone = origin.get_reachable_zone();
// Compare with zone_tick == old_zone && old_zone != 0
if( ( zone_tick > 0 && old_zone > 0 ) ||
( zone_tick < 0 && old_zone < 0 ) ) {
return;
}
creature_tracker &tracker = get_creature_tracker();
ff::flood_fill_visit_10_connected( origin.pos_bub(),
[&here]( const tripoint_bub_ms & loc, int direction ) {
if( direction == 0 ) {
return here.inbounds( loc ) && ( here.is_transparent_wo_fields( loc.raw() ) ||
here.passable( loc ) );
}
if( direction == 1 ) {
const maptile &up = here.maptile_at( loc );
const ter_t &up_ter = up.get_ter_t();
if( up_ter.id.is_null() ) {
return false;
}
if( ( ( up_ter.movecost != 0 && up.get_furn_t().movecost >= 0 ) ||
here.is_transparent_wo_fields( loc.raw() ) ) &&
( up_ter.has_flag( ter_furn_flag::TFLAG_NO_FLOOR ) ||
up_ter.has_flag( ter_furn_flag::TFLAG_GOES_DOWN ) ) ) {
return true;
}
}
if( direction == -1 ) {
const maptile &up = here.maptile_at( loc + tripoint_above );
const ter_t &up_ter = up.get_ter_t();
if( up_ter.id.is_null() ) {
return false;
}
const maptile &down = here.maptile_at( loc );
const ter_t &down_ter = up.get_ter_t();
if( down_ter.id.is_null() ) {
return false;
}
if( ( ( down_ter.movecost != 0 && down.get_furn_t().movecost >= 0 ) ||
here.is_transparent_wo_fields( loc.raw() ) ) &&
( up_ter.has_flag( ter_furn_flag::TFLAG_NO_FLOOR ) ||
up_ter.has_flag( ter_furn_flag::TFLAG_GOES_DOWN ) ) ) {
return true;
}
}
return false;
},
[&tracker]( const tripoint_bub_ms & loc ) {
Creature *creature = tracker.creature_at<Creature>( loc );
if( creature ) {
creature->set_reachable_zone( zone_number * zone_tick );
}
} );
if( zone_number == std::numeric_limits<int>::max() ) {
zone_number = 1;
} else {
zone_number++;
}
}
void monster::plan()
{
const auto &factions = g->critter_tracker->factions();
monster_plan mon_plan( *this );
map &here = get_map();
std::bitset<OVERMAP_LAYERS> seen_levels = here.get_inter_level_visibility( pos().z );
monster_attitude mood = attitude();
Character &player_character = get_player_character();
flood_fill_zone( *this );
// If we can see the player, move toward them or flee.
if( friendly == 0 && seen_levels.test( player_character.pos().z + OVERMAP_DEPTH ) &&
sees( player_character ) ) {
mon_plan.dist = rate_target( player_character, mon_plan.dist, mon_plan.smart_planning );
mon_plan.fleeing = mon_plan.fleeing || is_fleeing( player_character );
mon_plan.target = &player_character;
if( !mon_plan.fleeing && anger <= 20 ) {
anger += mon_plan.angers_hostile_seen;
}
anger_hostile_seen( mon_plan );
if( mon_plan.dist <= 5 ) {
if( anger <= 30 ) {
anger += mon_plan.angers_hostile_near;
}
if( mon_plan.angers_hostile_near && x_in_y( anger, 100 ) ) {
add_msg_debug( debugmode::DF_MONSTER, "%s's character aggro triggered by proximity", name() );
aggro_character = true;
}
morale -= mon_plan.fears_hostile_near;
anger_mating_season( mon_plan );
}
anger_cub_threatened( mon_plan );
} else if( friendly != 0 && !mon_plan.docile ) {
for( monster &tmp : g->all_monsters() ) {
if( tmp.friendly == 0 && tmp.attitude_to( *this ) == Attitude::HOSTILE &&
seen_levels.test( tmp.pos().z + OVERMAP_DEPTH ) ) {
float rating = rate_target( tmp, mon_plan.dist, mon_plan.smart_planning );
if( rating < mon_plan.dist ) {
mon_plan.target = &tmp;
mon_plan.dist = rating;
}
}
}
}
if( mon_plan.docile ) {
if( friendly != 0 && mon_plan.target != nullptr ) {
set_dest( mon_plan.target->get_location() );
}
return;
}
int valid_targets = ( mon_plan.target == nullptr ) ? 0 : 1;
for( npc &who : g->all_npcs() ) {
mf_attitude faction_att = faction.obj().attitude( who.get_monster_faction() );
if( faction_att == MFA_NEUTRAL || faction_att == MFA_FRIENDLY ) {
continue;
}
if( !seen_levels.test( who.pos().z + OVERMAP_DEPTH ) ) {
continue;
}
float rating = rate_target( who, mon_plan.dist, mon_plan.smart_planning );
bool fleeing_from = is_fleeing( who );
if( rating == mon_plan.dist && ( mon_plan.fleeing || attitude( &who ) == MATT_ATTACK ||
attitude( &who ) == MATT_FOLLOW ) ) {
++valid_targets;
if( one_in( valid_targets ) ) {
mon_plan.target = &who;
}
}
// Switch targets if closer and hostile or scarier than current target
if( ( rating < mon_plan.dist && mon_plan.fleeing ) ||
( faction_att == MFA_HATE ) ||
( rating < mon_plan.dist && attitude( &who ) == MATT_ATTACK ) ||
( !mon_plan.fleeing && fleeing_from ) ) {
mon_plan.target = &who;
mon_plan.dist = rating;
valid_targets = 1;
}
mon_plan.fleeing = mon_plan.fleeing || fleeing_from;
if( rating <= 5 ) {
if( anger <= 30 ) {
anger += mon_plan.angers_hostile_near;
}
if( mon_plan.angers_hostile_near && x_in_y( anger, 100 ) ) {
add_msg_debug( debugmode::DF_MONSTER, "%s's character aggro triggered by proximity to %s", name(),
who.name );
aggro_character = true;
}
morale -= mon_plan.fears_hostile_near;
anger_mating_season( mon_plan );
}
if( !mon_plan.fleeing && anger <= 20 && valid_targets != 0 ) {
anger += mon_plan.angers_hostile_seen;
}
if( !mon_plan.fleeing && valid_targets != 0 ) {
morale -= mon_plan.fears_hostile_seen;
anger_hostile_seen( mon_plan );
}
}
mon_plan.fleeing = mon_plan.fleeing || ( mood == MATT_FLEE );
// Throttle monster thinking, if there are no apparent threats, stop paying attention.
constexpr int max_turns_for_rate_limiting = 1800;
constexpr double max_turns_to_skip = 600.0;
// Outputs a range from 0.0 - 1.0.
float rate_limiting_factor = 1.0 - logarithmic_range( 0, max_turns_for_rate_limiting,
turns_since_target );
int turns_to_skip = max_turns_to_skip * rate_limiting_factor;
if( friendly == 0 && ( turns_to_skip == 0 || turns_since_target % turns_to_skip == 0 ) ) {
for( const auto &fac_list : factions ) {
mf_attitude faction_att = faction.obj().attitude( fac_list.first );
if( faction_att == MFA_NEUTRAL || faction_att == MFA_FRIENDLY ) {
continue;
}
for( const auto &fac : fac_list.second ) {
if( !seen_levels.test( fac.first + OVERMAP_DEPTH ) ) {
continue;
}
for( const weak_ptr_fast<monster> &weak : fac.second ) {
const shared_ptr_fast<monster> shared = weak.lock();
if( !shared ) {
continue;
}
monster &mon = *shared;
if( get_reachable_zone() != mon.get_reachable_zone() ) {
continue;
}
float rating = rate_target( mon, mon_plan.dist, mon_plan.smart_planning );
if( rating == mon_plan.dist ) {
++valid_targets;
if( one_in( valid_targets ) ) {
mon_plan.target = &mon;
}
}
if( rating < mon_plan.dist ) {
mon_plan.target = &mon;
mon_plan.dist = rating;
valid_targets = 1;
}
if( rating <= 5 ) {
if( anger <= 30 ) {
anger += mon_plan.angers_hostile_near;
}
morale -= mon_plan.fears_hostile_near;
}
if( !mon_plan.fleeing && anger <= 20 && valid_targets != 0 ) {
anger += mon_plan.angers_hostile_seen;
}
if( !mon_plan.fleeing && valid_targets != 0 ) {
morale -= mon_plan.fears_hostile_seen;
}
}
}
}
}
if( mon_plan.target == nullptr ) {
// Just avoiding overflow.
turns_since_target = std::min( turns_since_target + 1, max_turns_for_rate_limiting );
} else {
turns_since_target = 0;
}
// Friendly monsters here
// Avoid for hordes of same-faction stuff or it could get expensive
const mfaction_id actual_faction = friendly == 0 ? faction : STATIC( mfaction_str_id( "player" ) );
const auto &myfaction_iter = factions.find( actual_faction );
if( myfaction_iter == factions.end() ) {
DebugLog( D_ERROR, D_GAME ) << disp_name() << " tried to find faction "
<< actual_faction.id().str()
<< " which wasn't loaded in game::monmove";
mon_plan.swarms = false;
mon_plan.group_morale = false;
}
mon_plan.swarms = mon_plan.swarms && mon_plan.target == nullptr; // Only swarm if we have no target
if( mon_plan.group_morale || mon_plan.swarms ) {
for( const auto &fac : myfaction_iter->second ) {
if( !seen_levels.test( fac.first + OVERMAP_DEPTH ) ) {
continue;
}
for( const weak_ptr_fast<monster> &weak : fac.second ) {
const shared_ptr_fast<monster> shared = weak.lock();
if( !shared ) {
continue;
}
monster &mon = *shared;
float rating = rate_target( mon, mon_plan.dist, mon_plan.smart_planning );
if( mon_plan.group_morale && rating <= 10 ) {
morale += 10 - rating;
}
if( mon_plan.swarms ) {
if( rating < 5 ) { // Too crowded here
wander_pos = get_location() + point( rng( 1, 3 ), rng( 1, 3 ) );
wandf = 2;
mon_plan.target = nullptr;
// Swarm to the furthest ally you can see
} else if( rating < FLT_MAX && rating > mon_plan.dist && wandf <= 0 ) {
mon_plan.target = &mon;
mon_plan.dist = rating;
}
}
}
}
}
// Operating monster keep you safe while they operate, how nice....
if( type->has_special_attack( "OPERATE" ) ) {
if( has_effect( effect_operating ) ) {
friendly = 100;
for( Creature *critter : here.get_creatures_in_radius( pos(), 6 ) ) {
monster *mon = dynamic_cast<monster *>( critter );
if( mon != nullptr && mon->type->in_species( species_ZOMBIE ) ) {
anger = 100;
} else {
anger = 0;
}
}
}
}
if( has_effect( effect_dragging ) ) {
if( type->has_special_attack( "OPERATE" ) ) {
bool found_path_to_couch = false;
tripoint tmp( pos() + point( 12, 12 ) );
tripoint couch_loc;
for( const tripoint &couch_pos : here.find_furnitures_with_flag_in_radius( pos(), 10,
ter_furn_flag::TFLAG_AUTODOC_COUCH ) ) {
if( here.clear_path( pos(), couch_pos, 10, 0, 100 ) ) {
if( rl_dist( pos(), couch_pos ) < rl_dist( pos(), tmp ) ) {
tmp = couch_pos;
found_path_to_couch = true;
couch_loc = couch_pos;
}
}
}
if( !found_path_to_couch ) {
anger = 0;
remove_effect( effect_dragging );
} else {
set_dest( here.getglobal( couch_loc ) );
}
}
} else if( mon_plan.target != nullptr ) {
const tripoint_abs_ms dest = mon_plan.target->get_location();
Creature::Attitude att_to_target = attitude_to( *mon_plan.target );
if( att_to_target == Attitude::HOSTILE && !mon_plan.fleeing ) {
set_dest( dest );
} else if( mon_plan.fleeing ) {
tripoint_abs_ms away = get_location() - dest + get_location();
away.z() = posz();
set_dest( away );
}
if( ( mon_plan.angers_hostile_weak || mon_plan.fears_hostile_weak ||
mon_plan.placate_hostile_weak ) &&
att_to_target != Attitude::FRIENDLY ) {
int hp_per = mon_plan.target->hp_percentage();
if( hp_per <= 70 ) {
if( mon_plan.angers_hostile_weak && anger <= 40 ) {
anger += 10 - static_cast<int>( hp_per / 10 );
if( x_in_y( anger, 100 ) ) {
add_msg_debug( debugmode::DF_MONSTER, "%s's character aggro triggered by %s's weakness", name(),
mon_plan.target->disp_name() );
aggro_character = true;
}
} else if( mon_plan.fears_hostile_weak ) {
morale -= 10 - static_cast<int>( hp_per / 10 );
} else if( mon_plan.placate_hostile_weak ) {
anger -= 10 - static_cast<int>( hp_per / 10 );
}
}
}
} else if( !patrol_route.empty() ) {
// If we have a patrol route and no target, find the current step on the route
tripoint_abs_ms next_stop = patrol_route.at( next_patrol_point );
// if there is more than one patrol point, advance to the next one if we're almost there
// this handles impassable obstacles but patrollers can still get stuck
if( ( patrol_route.size() > 1 ) && rl_dist( next_stop, get_location() ) < 2 ) {
next_patrol_point = ( next_patrol_point + 1 ) % patrol_route.size();
next_stop = patrol_route.at( next_patrol_point );
}
set_dest( next_stop );
} else if( friendly != 0 && has_effect( effect_led_by_leash ) &&
get_location().z() == get_dest().z() ) {
// visibility doesn't matter, we're getting pulled by a leash
// To use stairs smoothly, if the destination is on a different Z-level, move there first.
set_dest( player_character.get_location() );
if( friendly > 0 && one_in( 3 ) ) {
// Grow restless with no targets
friendly--;
}
} else if( friendly > 0 && one_in( 3 ) ) {
// Grow restless with no targets
friendly--;
} else if( is_pet_follow() && sees( player_character ) &&
( get_location().z() == player_character.get_location().z() ||
get_location().z() == get_dest().z() ) ) {
// Simpleminded animals are too dumb to follow the player.
// To use stairs smoothly, if the destination is on a different Z-level, move there first.
set_dest( player_character.get_location() );
}
}
/**
* Method to make monster movement speed consistent in the face of staggering behavior and
* differing distance metrics.
* It works by scaling the cost to take a step by
* how much that step reduces the distance to your goal.
* Since it incorporates the current distance metric,
* it also scales for diagonal vs orthogonal movement.
**/
static float get_stagger_adjust( const tripoint &source, const tripoint &destination,
const tripoint &next_step )
{
// TODO: push this down into rl_dist
const float initial_dist =
trigdist ? trig_dist( source, destination ) : rl_dist( source, destination );
const float new_dist =
trigdist ? trig_dist( next_step, destination ) : rl_dist( next_step, destination );
// If we return 0, it wil cancel the action.
return std::max( 0.01f, initial_dist - new_dist );
}
/**
* Returns true if the given square presents a possibility of drowning for the monster: it's deep water, it's liquid,
* the monster can drown, and there is no boardable vehicle part present.
*/
bool monster::is_aquatic_danger( const tripoint &at_pos ) const
{
map &here = get_map();
return here.has_flag_ter( ter_furn_flag::TFLAG_DEEP_WATER, at_pos ) &&
here.has_flag( ter_furn_flag::TFLAG_LIQUID, at_pos ) &&
can_drown() && !here.veh_at( at_pos ).part_with_feature( "BOARDABLE", false );
}
bool monster::die_if_drowning( const tripoint &at_pos, const int chance )
{
if( is_aquatic_danger( at_pos ) && one_in( chance ) ) {
add_msg_if_player_sees( at_pos, _( "The %s drowns!" ), name() );
die( nullptr );
return true;
}
return false;
}
// General movement.
// Currently, priority goes:
// 1) Special Attack
// 2) Sight-based tracking
// 3) Scent-based tracking
// 4) Sound-based tracking
void monster::move()
{
add_msg_debug( debugmode::DF_MONMOVE, "Monster %s starting monmove::move, remaining moves %d",
name(), moves );
// We decrement wandf no matter what. We'll save our wander_to plans until
// after we finish out set_dest plans, UNLESS they time out first.
if( wandf > 0 ) {
wandf--;
}
//Hallucinations have a chance of disappearing each turn
if( is_hallucination() && one_in( 25 ) ) {
die( nullptr );
return;
}
map &here = get_map();
Character &player_character = get_player_character();
behavior::monster_oracle_t oracle( this );
behavior::tree goals;
goals.add( type->get_goals() );
std::string action = goals.tick( &oracle );
//The monster can consume objects it stands on. Check if there are any.
//If there are. Consume them.
// TODO: Stick this in a map and dispatch to it via the action string.
// TODO: Create a special attacks whitelist unordered map instead of an if chain.
std::map<std::string, mtype_special_attack>::const_iterator attack =
type->special_attacks.find( action );
if( attack != type->special_attacks.end() && attack->second->call( *this ) ) {
if( special_attacks.count( action ) != 0 ) {
reset_special( action );
}
}
// record position before moving to put the player there if we're dragging
tripoint_abs_ms drag_to = get_location();
const bool pacified = has_effect( effect_pacified );
// First, use the special attack, if we can!
// The attack may change `monster::special_attacks` (e.g. by transforming
// this into another monster type). Therefore we can not iterate over it
// directly and instead iterate over the map from the monster type
// (properties of monster types should never change).
for( const auto &sp_type : type->special_attacks ) {
const std::string &special_name = sp_type.first;
const auto local_iter = special_attacks.find( special_name );
if( local_iter == special_attacks.end() ) {
continue;
}
mon_special_attack &local_attack_data = local_iter->second;
if( !local_attack_data.enabled ) {
continue;
}
add_msg_debug( debugmode::DF_MATTACK, "%s attempting a special attack %s, cooldown %d", name(),
sp_type.first, local_attack_data.cooldown );
// Cooldowns are decremented in monster::process_turn
if( local_attack_data.cooldown == 0 && !pacified && !is_hallucination() ) {
if( !sp_type.second->call( *this ) ) {
add_msg_debug( debugmode::DF_MATTACK, "Attack failed" );
continue;
}
// `special_attacks` might have changed at this point. Sadly `reset_special`
// doesn't check the attack name, so we need to do it here.
if( special_attacks.count( special_name ) == 0 ) {
continue;
}
reset_special( special_name );
}