int AIHuntClosest(TActor *actor)
{
Vec2i targetPos = actor->Pos;
if (!(actor->pData || (actor->flags & FLAGS_GOOD_GUY)))
{
targetPos = AIGetClosestPlayerPos(actor->Pos);
}
if (actor->flags & FLAGS_VISIBLE)
{
TActor *a = AIGetClosestEnemy(
actor->Pos, actor->flags, !!actor->pData);
if (a)
{
targetPos = a->Pos;
}
}
return AIHunt(actor, targetPos);
}
bool UpdateBullet(TMobileObject *obj, const int ticks)
{
obj->count += ticks;
obj->soundLock = MAX(0, obj->soundLock - ticks);
obj->specialLock = MAX(0, obj->specialLock - ticks);
if (obj->count < obj->bulletClass->Delay)
{
return true;
}
if (obj->range >= 0 && obj->count > obj->range)
{
if (!gCampaign.IsClient)
{
FireGuns(obj, &obj->bulletClass->OutOfRangeGuns);
}
return false;
}
const Vec2i objPos = Vec2iNew(obj->x, obj->y);
if (obj->bulletClass->SeekFactor > 0)
{
// Find the closest target to this bullet and steer towards it
const TActor *owner = ActorGetByUID(obj->ActorUID);
if (owner == NULL)
{
return false;
}
const TActor *target = AIGetClosestEnemy(objPos, owner, obj->flags);
if (target && !target->dead)
{
for (int i = 0; i < ticks; i++)
{
obj->vel = SeekTowards(
objPos, obj->vel,
obj->bulletClass->SpeedLow, target->Pos,
obj->bulletClass->SeekFactor);
}
}
}
Vec2i pos = Vec2iScale(Vec2iAdd(objPos, obj->vel), ticks);
HitType hitItem = HIT_NONE;
if (!gCampaign.IsClient)
{
hitItem = HitItem(obj, pos, obj->bulletClass->Persists);
}
const Vec2i realPos = Vec2iFull2Real(pos);
// Falling (grenades)
if (obj->bulletClass->Falling.GravityFactor != 0)
{
bool hasDropped = obj->z <= 0;
for (int i = 0; i < ticks; i++)
{
obj->z += obj->dz;
if (obj->z <= 0)
{
obj->z = 0;
if (obj->bulletClass->Falling.Bounces)
{
obj->dz = -obj->dz / 2;
}
else
{
obj->dz = 0;
}
if (!hasDropped)
{
if (!gCampaign.IsClient)
{
FireGuns(obj, &obj->bulletClass->Falling.DropGuns);
}
}
hasDropped = true;
if (obj->bulletClass->Falling.DestroyOnDrop)
{
return false;
}
SoundPlayAt(
&gSoundDevice,
StrSound(obj->bulletClass->HitSound.Wall), realPos);
}
else
{
obj->dz -= obj->bulletClass->Falling.GravityFactor;
}
if (!obj->bulletClass->Falling.FallsDown)
{
obj->dz = MAX(0, obj->dz);
}
}
}
// Friction
const bool isDiagonal = obj->vel.x != 0 && obj->vel.y != 0;
int frictionComponent = isDiagonal ?
(int)round(obj->bulletClass->Friction / sqrt(2)) :
obj->bulletClass->Friction;
for (int i = 0; i < ticks; i++)
{
if (obj->vel.x > 0)
{
obj->vel.x -= frictionComponent;
}
else if (obj->vel.x < 0)
{
obj->vel.x += frictionComponent;
}
if (obj->vel.y > 0)
{
obj->vel.y -= frictionComponent;
}
else if (obj->vel.y < 0)
{
obj->vel.y += frictionComponent;
}
}
bool hitWall = false;
if (!gCampaign.IsClient && hitItem == HIT_NONE)
{
hitWall =
MapIsRealPosIn(&gMap, realPos) && ShootWall(realPos.x, realPos.y);
}
if (hitWall || hitItem != HIT_NONE)
{
GameEvent b = GameEventNew(GAME_EVENT_BULLET_BOUNCE);
b.u.BulletBounce.UID = obj->UID;
if (hitWall && !Vec2iIsZero(obj->vel))
{
b.u.BulletBounce.HitType = (int)HIT_WALL;
}
else
{
b.u.BulletBounce.HitType = (int)hitItem;
}
bool alive = true;
if ((hitWall && !obj->bulletClass->WallBounces) ||
((hitItem != HIT_NONE) && obj->bulletClass->HitsObjects))
{
b.u.BulletBounce.Spark = true;
CASSERT(!gCampaign.IsClient, "Cannot process bounces as client");
FireGuns(obj, &obj->bulletClass->HitGuns);
if (hitWall || !obj->bulletClass->Persists)
{
alive = false;
}
}
b.u.BulletBounce.BouncePos = Vec2i2Net(pos);
b.u.BulletBounce.BounceVel = Vec2i2Net(obj->vel);
if (hitWall && !Vec2iIsZero(obj->vel))
{
// Bouncing
Vec2i bounceVel = obj->vel;
pos = GetWallBounceFullPos(objPos, pos, &bounceVel);
b.u.BulletBounce.BouncePos = Vec2i2Net(pos);
b.u.BulletBounce.BounceVel = Vec2i2Net(bounceVel);
obj->vel = bounceVel;
}
GameEventsEnqueue(&gGameEvents, b);
if (!alive)
{
return false;
}
}
if (!MapTryMoveTileItem(&gMap, &obj->tileItem, realPos))
{
obj->count = obj->range;
return false;
}
obj->x = pos.x;
obj->y = pos.y;
if (obj->bulletClass->Erratic)
{
for (int i = 0; i < ticks; i++)
{
obj->vel.x += ((rand() % 3) - 1) * 128;
obj->vel.y += ((rand() % 3) - 1) * 128;
}
}
// Proximity function, destroy
// Only check proximity every now and then
if (obj->bulletClass->ProximityGuns.size > 0 && !(obj->count & 3))
{
if (!gCampaign.IsClient)
{
// Detonate the mine if there are characters in the tiles around it
const Vec2i tv =
Vec2iToTile(Vec2iFull2Real(pos));
Vec2i dv;
for (dv.y = -1; dv.y <= 1; dv.y++)
{
for (dv.x = -1; dv.x <= 1; dv.x++)
{
const Vec2i dtv = Vec2iAdd(tv, dv);
if (!MapIsTileIn(&gMap, dtv))
{
continue;
}
if (TileHasCharacter(MapGetTile(&gMap, dtv)))
{
FireGuns(obj, &obj->bulletClass->ProximityGuns);
return false;
}
}
}
}
}
return true;
}
