dd_bool Smoother_IsMoving(Smoother const *sm)
{
DENG_ASSERT(sm);
const pos_t *past = &sm->past;
const pos_t *now = &sm->now;
// The smoother is moving if the current past and present are different
// points in time and space.
return sm->at >= past->time && sm->at <= now->time && past->time < now->time &&
(!INRANGE_OF(past->xyz[VX], now->xyz[VX], SMOOTHER_MOVE_EPSILON) ||
!INRANGE_OF(past->xyz[VY], now->xyz[VY], SMOOTHER_MOVE_EPSILON) ||
!INRANGE_OF(past->xyz[VZ], now->xyz[VZ], SMOOTHER_MOVE_EPSILON));
}
int P_CameraXYMovement(mobj_t *mo)
{
if(!P_MobjIsCamera(mo))
return false;
#if __JDOOM__ || __JDOOM64__
if(mo->flags & MF_NOCLIP ||
// This is a very rough check! Sometimes you get stuck in things.
P_CheckPositionXYZ(mo, mo->origin[VX] + mo->mom[MX], mo->origin[VY] + mo->mom[MY], mo->origin[VZ]))
{
#endif
P_MobjUnsetOrigin(mo);
mo->origin[VX] += mo->mom[MX];
mo->origin[VY] += mo->mom[MY];
P_MobjSetOrigin(mo);
P_CheckPositionXY(mo, mo->origin[VX], mo->origin[VY]);
mo->floorZ = tmFloorZ;
mo->ceilingZ = tmCeilingZ;
#if __JDOOM__ || __JDOOM64__
}
#endif
// Friction.
if(!INRANGE_OF(mo->player->brain.forwardMove, 0, CAMERA_FRICTION_THRESHOLD) ||
!INRANGE_OF(mo->player->brain.sideMove, 0, CAMERA_FRICTION_THRESHOLD) ||
!INRANGE_OF(mo->player->brain.upMove, 0, CAMERA_FRICTION_THRESHOLD))
{
// While moving; normal friction applies.
mo->mom[MX] *= FRICTION_NORMAL;
mo->mom[MY] *= FRICTION_NORMAL;
}
else
{
// Else lose momentum, quickly!.
mo->mom[MX] *= FRICTION_HIGH;
mo->mom[MY] *= FRICTION_HIGH;
}
return true;
}
int P_CameraZMovement(mobj_t *mo)
{
if(!P_MobjIsCamera(mo))
return false;
mo->origin[VZ] += mo->mom[MZ];
// Friction.
if(!INRANGE_OF(mo->player->brain.forwardMove, 0, CAMERA_FRICTION_THRESHOLD) ||
!INRANGE_OF(mo->player->brain.sideMove, 0, CAMERA_FRICTION_THRESHOLD) ||
!INRANGE_OF(mo->player->brain.upMove, 0, CAMERA_FRICTION_THRESHOLD))
{ // While moving; normal friction applies.
mo->mom[MZ] *= FRICTION_NORMAL;
}
else
{ // Else, lose momentum quickly!.
mo->mom[MZ] *= FRICTION_HIGH;
}
return true;
}
void Mobj_XYMoveStopping(mobj_t *mo)
{
DENG_ASSERT(mo != 0);
player_t *player = mo->player;
if(player && (P_GetPlayerCheats(player) & CF_NOMOMENTUM))
{
// Debug option for no sliding at all.
mo->mom[MX] = mo->mom[MY] = 0;
return;
}
if(mo->flags & (MF_MISSILE | MF_SKULLFLY))
{
// No friction for missiles.
return;
}
if(mo->origin[VZ] > mo->floorZ && !mo->onMobj && !(mo->flags2 & MF2_FLY))
{
// No friction when falling.
return;
}
#ifndef __JHEXEN__
if(cfg.slidingCorpses)
{
// $dropoff_fix: Add objects falling off ledges. Does not apply to players!
if(((mo->flags & MF_CORPSE) || (mo->intFlags & MIF_FALLING)) && !mo->player)
{
// Do not stop sliding if halfway off a step with some momentum.
if(!INRANGE_OF(mo->mom[MX], 0, DROPOFFMOMENTUM_THRESHOLD) ||
!INRANGE_OF(mo->mom[MY], 0, DROPOFFMOMENTUM_THRESHOLD))
{
if(!FEQUAL(mo->floorZ, P_GetDoublep(Mobj_Sector(mo), DMU_FLOOR_HEIGHT)))
return;
}
}
}
#endif
bool isVoodooDoll = Mobj_IsVoodooDoll(mo);
bool belowWalkStop = (INRANGE_OF(mo->mom[MX], 0, WALKSTOP_THRESHOLD) &&
INRANGE_OF(mo->mom[MY], 0, WALKSTOP_THRESHOLD));
bool belowStandSpeed = false;
bool isMovingPlayer = false;
if(player)
{
belowStandSpeed = (INRANGE_OF(mo->mom[MX], 0, STANDSPEED) &&
INRANGE_OF(mo->mom[MY], 0, STANDSPEED));
isMovingPlayer = (!FEQUAL(player->plr->forwardMove, 0) ||
!FEQUAL(player->plr->sideMove, 0));
}
// Stop player walking animation (only real players).
if(!isVoodooDoll && player && belowStandSpeed && !isMovingPlayer &&
!IS_NETWORK_SERVER) // Netgame servers use logic elsewhere for player animation.
{
// If in a walking frame, stop moving.
if(P_PlayerInWalkState(player))
{
P_MobjChangeState(player->plr->mo, statenum_t(PCLASS_INFO(player->class_)->normalState));
}
}
// Apply friction.
if(belowWalkStop && !isMovingPlayer)
{
// $voodoodolls: Do not zero mom for voodoo dolls!
if(!isVoodooDoll)
{
// Momentum is below the walkstop threshold; stop it completely.
mo->mom[MX] = mo->mom[MY] = 0;
// $voodoodolls: Stop view bobbing if this isn't a voodoo doll.
if(player) player->bob = 0;
}
}
else
{
coord_t friction = Mobj_Friction(mo);
mo->mom[MX] *= friction;
mo->mom[MY] *= friction;
}
}
