void
compute_loose_floor_fall (struct loose_floor *l)
{
int speed = 3 * ++l->i;
if (speed > 29) speed = 29;
struct frame nf;
struct frame_offset fo;
fo.b = l->f.b;
fo.dx = 0;
fo.dy = speed;
next_frame (&l->f, &nf, &fo);
struct coord mbo_f, mbo_nf;
struct pos fpmbo_f, nfpmbo_f, fpmbo_nf, nfpmbo_nf;
enum confg fcmbo_f;
fcmbo_f = survey (_mbo, posf, &l->f, &mbo_f, &fpmbo_f, &nfpmbo_f)->fg;
survey (_mbo, posf, &nf, &mbo_nf, &fpmbo_nf, &nfpmbo_nf);
struct pos p;
/* hit kid */
int i;
for (i = 0; i < anima_nmemb; i++) {
struct coord kmt, ambo_f, ambo_nf; struct pos np, kpmt;
struct anim *a = &anima[i];
if (is_anim_dead (&a->f)
|| a->immortal
|| a->loose_floor_immune)
continue;
survey (_mt, pos, &a->f, &kmt, &kpmt, &np);
coord2room (&mbo_f, kpmt.room, &ambo_f);
coord2room (&mbo_nf, kpmt.room, &ambo_nf);
if (peq (&nfpmbo_f, &kpmt)
&& ambo_f.y <= kmt.y
&& ambo_nf.y >= kmt.y
&& ! a->hit_by_loose_floor
&& ! is_kid_hang_or_climb (&a->f)
&& ! is_kid_fall (&a->f)) {
a->hit_by_loose_floor = true;
a->splash = true;
a->current_lives--;
a->uncouch_slowly = true;
/* ensure kid doesn't couch in thin air (might occur when hit
while jumping, for example) */
place_on_the_ground (&a->f, &a->f.c);
play_sample (hit_wall_sample, kpmt.room);
alert_guards (&kpmt);
if (a->id == current_kid_id) {
video_effect.color = get_flicker_blood_color ();
start_video_effect (VIDEO_FLICKERING, SECS_TO_VCYCLES (0.1));
}
if (a->current_lives <= 0) {
a->p = kpmt;
anim_die_suddenly (a);
a->death_reason = LOOSE_FLOOR_DEATH;
}
else if (a->type == KID) kid_couch (a);
}
}
/* fall */
if (is_strictly_traversable (&fpmbo_f)
|| peq (&fpmbo_f, &fpmbo_nf)) {
/* the floor hit a rigid structure */
if (is_rigid_con (&fpmbo_nf)) prel (&fpmbo_nf, &p, -1, 0);
/* the floor continue to fall */
else {
l->f = nf;
if (is_strictly_traversable (&fpmbo_nf)) l->p = fpmbo_nf;
must_sort = true;
return;
}
/* the floor hit the ground */
} else {
struct loose_floor *m;
p = fpmbo_f;
switch (fcmbo_f) {
case LOOSE_FLOOR: /* loose floor isn't ground */
m = loose_floor_at_pos (&fpmbo_f);
if (m) m->p.room = -1;
must_remove = true;
l->f = nf;
l->f.b = get_correct_falling_loose_floor_bitmap (dv_broken_floor);
l->p = fpmbo_f;
l->i = 0;
con (&fpmbo_f)->fg = NO_FLOOR;
must_sort = true;
play_sample (broken_floor_sample, p.room);
alert_guards (&p);
return;
case OPENER_FLOOR: break_opener_floor (&fpmbo_f); break;
case CLOSER_FLOOR: break_closer_floor (&fpmbo_f); break;
case SPIKES_FLOOR: break_spikes_floor (&fpmbo_f); break;
case LEVEL_DOOR: break_level_door (&fpmbo_f); break;
default: break;
}
}
/* reach here only if the floor hit a rigid structure or the
ground */
if (con (&p)->fg != LEVEL_DOOR) con (&p)->fg = BROKEN_FLOOR;
shake_loose_floor_row (&p);
l->p.room = -1;
must_remove = true;
must_sort = true;
play_sample (broken_floor_sample, p.room);
alert_guards (&p);
}
void
fight_ai (struct anim *k)
{
/* non-fightable characters don't fight */
if (! is_fightable_anim (k)) return;
/* controllables and non-fighters doesn't need AI to fight */
if (k->controllable || ! k->fight) return;
/* if forgetting about an enemy, no need to fight */
if (k->enemy_refraction > 0) return;
/* without an enemy or awareness, no need to fight */
if (k->enemy_id == -1) {
if (is_in_fight_mode (k)) leave_fight_mode (k);
return;
}
/* first thing, enter in fight mode */
if (! is_in_fight_mode (k)) {
enter_fight_mode (k);
return;
}
/* who's the enemy? */
struct anim *ke = get_anim_by_id (k->enemy_id);
/* what's the facing opposite direction? */
enum dir odir = (k->f.dir == LEFT) ? RIGHT : LEFT;
/* get positions */
struct pos p, pe;
survey (_m, pos, &k->f, NULL, &p, NULL);
survey ((k->f.dir != ke->f.dir) ? _m : _mba,
pos, &ke->f, NULL, &pe, NULL);
pos2room (&pe, p.room, &pe);
/* remember the place the enemy was last seen */
if (pe.room == p.room && pe.floor == p.floor)
k->enemy_pos = pe;
else if (pe.floor > p.floor && is_valid_pos (&k->enemy_pos)
&& ! is_strictly_traversable (&k->enemy_pos))
k->enemy_pos.place = pe.place;
if (is_valid_pos (&k->enemy_pos)
&& is_strictly_traversable (&k->enemy_pos)) {
struct pos pp;
int d = (p.place < k->enemy_pos.place) ? -1 : +1;
while (is_strictly_traversable (prel (&k->enemy_pos, &pp, +0, d)))
k->enemy_pos = pp;
}
/* prevent enemy from passing through */
if (ke->type == KID
&& is_in_range (k, ke, ATTACK_RANGE)
&& ! is_in_fight_mode (ke)
&& ! ke->immortal
&& ! (is_kid_climb (&ke->f) && ke->i <= 7)
&& ke->f.dir != k->f.dir
&& ke->current_lives > 0
&& ke->has_sword
&& ! is_kid_fall (&ke->f)
&& ! is_kid_hang (&ke->f)
&& ! is_kid_jump_air (&ke->f)
&& ! is_kid_run_jump_air (&ke->f)
&& is_safe_to_attack (ke)) {
place_on_the_ground (&ke->f, &ke->f.c);
kid_take_sword (ke);
ke->auto_taken_sword = true;
}
/* prevent enemy from hiding near */
if (ke->type == KID
&& is_in_range (k, ke, INVERSION_RANGE)
&& ! is_in_fight_mode (ke)
&& ke->current_lives > 0) {
if (is_safe_to_walkb (k)) fight_walkb (k);
else if (is_safe_to_turn (k)) fight_turn (k);
return;
}
/* if the enemy is on the back, turn */
if (is_on_back (k, ke) && is_anim_seeing (k, ke, odir)
&& p.floor == pe.floor
&& ! is_in_range (k, ke, INVERSION_RANGE)) {
if (is_safe_to_turn (k)) fight_turn (k);
else if (is_safe_to_walkb (k)) fight_walkb (k);
return;
}
/* if too near to a wall, back off to have room for an attack */
if (fight_crel (k, +0, +1) == WALL
&& is_safe_to_walkb (k)) {
fight_walkb (k);
return;
}
/* /\* if the enemy can be followed in the opposite direction, turn *\/ */
/* if (! is_safe_to_follow (k, ke, k->f.dir) */
/* && is_safe_to_follow (k, ke, odir)) { */
/* fight_turn (k); */
/* return; */
/* } */
/* if the enemy is trying to bypass, attack him */
if (! is_in_fight_mode (ke)
&& ! ke->has_sword
&& ! is_kid_stairs (&ke->f)
&& ke->f.dir != k->f.dir
&& ke->current_lives > 0
&& ! is_on_back (k, ke)
&& ((is_kid_run (&ke->f)
&& is_in_range (k, ke, 3 * PLACE_WIDTH - 4))
|| (is_kid_run_jump (&ke->f)
&& is_in_range (k, ke, 4 * PLACE_WIDTH - 4))
|| (is_kid_jump_air (&ke->f) && ke->i < 9
&& is_in_range (k, ke, 4 * PLACE_WIDTH)))) {
if (is_safe_to_attack (k)) fight_attack (k);
else if (is_safe_to_walkb (k)) fight_walkb (k);
return;
}
/* stays at least in the fight range. Advance, unless the enemy is
not running towards you */
if (! is_in_range (k, ke, FIGHT_RANGE + 10)
&& ! is_kid_stairs (&ke->f)
&& (ke->f.dir == k->f.dir
|| p.room != pe.room
|| p.floor != pe.floor
|| ! (is_kid_run (&ke->f)
|| is_kid_run_jump (&ke->f)
|| is_kid_jump (&ke->f)))
&& is_safe_to_follow (k, ke, k->f.dir)) {
fight_walkf (k);
return;
}
/* if the enemy is not targeting you, do nothing more */
if (ke->enemy_id != -1 && ke->enemy_id != k->id) return;
/* in fight range, if the enemy is not attacking, go towards attack
range (with probability, unless the enemy is not in fight mode,
then go immediately) */
if (is_in_range (k, ke, FIGHT_RANGE + 10)
&& ! is_in_range (k, ke, ATTACK_RANGE)
&& ! is_kid_stairs (&ke->f)
&& is_safe_to_follow (k, ke, k->f.dir)
&& (prandom (99) <= k->skill.advance_prob
|| ! is_in_fight_mode (ke))
&& ! is_attacking (ke)
&& (! is_in_fight_mode (ke)
|| is_walking (ke)
|| ke->i >= 6 + prandom (24))) {
fight_walkf (k);
return;
}
/* in attack range, if being attacked, defend yourself (with
probability) and counter attack (with probability handled
elsewhere) */
if (is_in_range (k, ke, ATTACK_RANGE + 16)
&& ! is_on_back (k, ke)
&& (is_attacking (ke) && ke->i == 0)
&& (prandom (99) <= k->skill.defense_prob
|| k->refraction > 0)
&& ke->current_lives > 0) {
fight_defense (k);
fight_attack (k);
return;
}
/* if attacking, counter defend
(with probability handled elsewhere) */
if (is_in_range (k, ke, ATTACK_RANGE + 16)
&& is_attacking (k)) {
fight_defense (k);
fight_attack (k);
return;
}
/* in attack range, if not being attacked, attack (with probability,
unless the enemy is not in fight mode, then attack immediately) */
if (is_in_range (k, ke, ATTACK_RANGE)
&& ! is_attacking (ke)
&& ! is_on_back (k, ke)
&& ! is_kid_stairs (&ke->f)
&& ! ((is_kid_climb (&ke->f)
|| is_kid_successfully_climbing (&ke->f))
&& ke->i >= 1)
&& ke->current_lives > 0
&& (prandom (99) <= k->skill.attack_prob
|| ! is_in_fight_mode (ke))) {
if (is_safe_to_attack (k)) fight_attack (k);
else if (is_safe_to_walkb (k)) fight_walkb (k);
return;
}
/* in hit range, back off (with probability) */
if (is_in_range (k, ke, HIT_RANGE - 10)
&& is_safe_to_walkb (k)
&& ! k->refraction
&& ! is_walkingb (ke)
&& prandom (99) <= k->skill.return_prob) {
fight_walkb (k);
return;
}
}
