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Cleanup trail.c and add sanity checks

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Yamagi Burmeister 2013-01-06 10:27:00 +01:00
parent b8052668b2
commit 0ac8329672
1 changed files with 78 additions and 50 deletions
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128
src/player/trail.c
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@ -1,38 +1,39 @@
/* =======================================================================
*
* The player trail, used by monsters to locate the player.
*
* =======================================================================
*/
#include "../header/local.h"
/*
==============================================================================
* 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
*/
PLAYER TRAIL
#define TRAIL_LENGTH 8
==============================================================================
#define NEXT(n) (((n) + 1) & (TRAIL_LENGTH - 1))
#define PREV(n) (((n) - 1) & (TRAIL_LENGTH - 1))
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.
edict_t *trail[TRAIL_LENGTH];
int trail_head;
qboolean trail_active = false;
.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)
void
PlayerTrail_Init(void)
{
int n;
int n;
if (deathmatch->value /* FIXME || coop */)
if (deathmatch->value)
{
return;
}
for (n = 0; n < TRAIL_LENGTH; n++)
{
@ -44,49 +45,64 @@ void PlayerTrail_Init (void)
trail_active = true;
}
void PlayerTrail_Add (vec3_t spot)
void
PlayerTrail_Add(vec3_t spot)
{
vec3_t temp;
vec3_t temp;
if (!trail_active)
{
return;
}
VectorCopy (spot, trail[trail_head]->s.origin);
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);
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)
void
PlayerTrail_New(vec3_t spot)
{
if (!trail_active)
{
return;
}
PlayerTrail_Init ();
PlayerTrail_Add (spot);
PlayerTrail_Init();
PlayerTrail_Add(spot);
}
edict_t *PlayerTrail_PickFirst (edict_t *self)
edict_t *
PlayerTrail_PickFirst(edict_t *self)
{
int marker;
int n;
if (!trail_active)
int marker;
int n;
if (!self)
{
return NULL;
}
if (!trail_active)
{
return NULL;
}
for (marker = trail_head, n = TRAIL_LENGTH; n; n--)
{
if(trail[marker]->timestamp <= self->monsterinfo.trail_time)
if (trail[marker]->timestamp <= self->monsterinfo.trail_time)
{
marker = NEXT(marker);
}
else
{
break;
}
}
if (visible(self, trail[marker]))
@ -102,27 +118,39 @@ edict_t *PlayerTrail_PickFirst (edict_t *self)
return trail[marker];
}
edict_t *PlayerTrail_PickNext (edict_t *self)
edict_t *
PlayerTrail_PickNext(edict_t *self)
{
int marker;
int n;
if (!trail_active)
int marker;
int n;
if (!self)
{
return NULL;
}
if (!trail_active)
{
return NULL;
}
for (marker = trail_head, n = TRAIL_LENGTH; n; n--)
{
if(trail[marker]->timestamp <= self->monsterinfo.trail_time)
if (trail[marker]->timestamp <= self->monsterinfo.trail_time)
{
marker = NEXT(marker);
}
else
{
break;
}
}
return trail[marker];
}
edict_t *PlayerTrail_LastSpot (void)
edict_t *
PlayerTrail_LastSpot(void)
{
return trail[PREV(trail_head)];
}