thirtyflightsofloving/missionpack/p_trail.c
Knightmare66 7b6f4281ad Added POSTTHINK_CHILD_MOVEMENT macro to new movewith host entities in g_spawn.c->SpawnEntities() in default Lazarus DLL.
Added Zaero flare gun to no-autoswitch in p_weapon.c->Pickup_Weapon() in missionpack DLL.
Added LM plasma rifle to p_weapon.c->NoAmmoWeaponChange() in missionpack DLL.
Added output of modelindex5&6, alpha, and attenuation to properties command  in missionpack DLL.
Added nogib and environment spawnflags to trigger_hurt and trigger_hurt_boox in missionpack DLL.
Added MONSTER_KNOWS_MIRRORS flag to berserker, barracuda shark, and mutant in missionpack DLL.
Added entity class IDs to misc_actor and target_actor in missionpack DLL.
Added syntax whitespacing to some files in missionpack DLL.
Added backpack drop to certain monsters in missionpack DLL.
Changed some sound paths for new monsters and weapons in missionpack DLL.
2020-10-29 13:03:20 -04:00

127 lines
2.1 KiB
C

#include "g_local.h"
/*
==============================================================================
PLAYER TRAIL
==============================================================================
This is a circular list containing the a list of points of where
the player has been recently. It is used by monsters for pursuit.
.origin the spot
.owner forward link
.aiment backward link
*/
#define TRAIL_LENGTH 8
edict_t *trail[TRAIL_LENGTH];
int trail_head;
qboolean trail_active = false;
#define NEXT(n) (((n) + 1) & (TRAIL_LENGTH - 1))
#define PREV(n) (((n) - 1) & (TRAIL_LENGTH - 1))
void PlayerTrail_Init (void)
{
int n;
if (deathmatch->value /* FIXME || coop */)
return;
for (n = 0; n < TRAIL_LENGTH; n++)
{
trail[n] = G_Spawn();
trail[n]->classname = "player_trail";
}
trail_head = 0;
trail_active = true;
}
void PlayerTrail_Add (vec3_t spot)
{
vec3_t temp;
if (!trail_active)
return;
VectorCopy (spot, trail[trail_head]->s.origin);
trail[trail_head]->timestamp = level.time;
VectorSubtract (spot, trail[PREV(trail_head)]->s.origin, temp);
trail[trail_head]->s.angles[1] = vectoyaw (temp);
trail_head = NEXT(trail_head);
}
void PlayerTrail_New (vec3_t spot)
{
if (!trail_active)
return;
PlayerTrail_Init ();
PlayerTrail_Add (spot);
}
edict_t *PlayerTrail_PickFirst (edict_t *self)
{
int marker;
int n;
if (!trail_active)
return NULL;
for (marker = trail_head, n = TRAIL_LENGTH; n; n--)
{
if (trail[marker]->timestamp <= self->monsterinfo.trail_time)
marker = NEXT(marker);
else
break;
}
if (visible(self, trail[marker]))
{
return trail[marker];
}
if (visible(self, trail[PREV(marker)]))
{
return trail[PREV(marker)];
}
return trail[marker];
}
edict_t *PlayerTrail_PickNext (edict_t *self)
{
int marker;
int n;
if (!trail_active)
return NULL;
for (marker = trail_head, n = TRAIL_LENGTH; n; n--)
{
if (trail[marker]->timestamp <= self->monsterinfo.trail_time)
marker = NEXT(marker);
else
break;
}
return trail[marker];
}
edict_t *PlayerTrail_LastSpot (void)
{
return trail[PREV(trail_head)];
}