int idPush::TryTranslatePushEntity( trace_t &results, idEntity *check, idClipModel *clipModel, const int flags,
const idVec3 &newOrigin, const idVec3 &move ) {
trace_t trace;
idVec3 checkMove;
idVec3 oldOrigin;
idPhysics *physics;
physics = check->GetPhysics();
#ifdef TRANSLATIONAL_PUSH_DEBUG
bool startsolid = false;
if ( physics->ClipContents( clipModel ) ) {
startsolid = true;
}
#endif
results.fraction = 1.0f;
results.endpos = newOrigin;
results.endAxis = clipModel->GetAxis();
memset( &results.c, 0, sizeof( results.c ) );
// always pushed when standing on the pusher
if ( physics->IsGroundClipModel( clipModel->GetEntity()->entityNumber, clipModel->GetId() ) ) {
// move the entity colliding with all other entities except the pusher itself
ClipEntityTranslation( trace, check, NULL, clipModel, move );
// if there is a collision
if ( trace.fraction < 1.0f ) {
// vector along which the entity is pushed
checkMove = move * trace.fraction;
// test if the entity can stay at it's partly pushed position by moving the entity in reverse only colliding with pusher
ClipEntityTranslation( results, check, clipModel, NULL, -(move - checkMove) );
// if there is a collision
if ( results.fraction < 1.0f ) {
// FIXME: try to push the blocking entity as well or try to slide along collision plane(s)?
results.c.normal = -results.c.normal;
results.c.dist = -results.c.dist;
// the entity will be crushed between the pusher and some other entity
return PUSH_BLOCKED;
}
}
else {
// vector along which the entity is pushed
checkMove = move;
}
}
else {
// move entity in reverse only colliding with pusher
ClipEntityTranslation( results, check, clipModel, NULL, -move );
// if no collision with the pusher then the entity is not pushed by the pusher
if ( results.fraction >= 1.0f ) {
return PUSH_NO;
}
// vector along which the entity is pushed
checkMove = move * (1.0f - results.fraction);
// move the entity colliding with all other entities except the pusher itself
ClipEntityTranslation( trace, check, NULL, clipModel, checkMove );
// if there is a collisions
if ( trace.fraction < 1.0f ) {
results.c.normal = -results.c.normal;
results.c.dist = -results.c.dist;
// FIXME: try to push the blocking entity as well ?
// FIXME: handle sliding along more than one collision plane ?
// FIXME: this code has issues, player pushing box into corner in "maps/mre/aaron/test.map"
/*
oldOrigin = physics->GetOrigin();
// movement still remaining
checkMove *= (1.0f - trace.fraction);
// project the movement along the collision plane
if ( !checkMove.ProjectAlongPlane( trace.c.normal, 0.1f, 1.001f ) ) {
return PUSH_BLOCKED;
}
checkMove *= 1.001f;
// move entity from collision point along the collision plane
physics->SetOrigin( trace.endpos );
ClipEntityTranslation( trace, check, NULL, NULL, checkMove );
if ( trace.fraction < 1.0f ) {
physics->SetOrigin( oldOrigin );
return PUSH_BLOCKED;
}
checkMove = trace.endpos - oldOrigin;
// move entity in reverse only colliding with pusher
physics->SetOrigin( trace.endpos );
ClipEntityTranslation( trace, check, clipModel, NULL, -move );
physics->SetOrigin( oldOrigin );
*/
if ( trace.fraction < 1.0f ) {
return PUSH_BLOCKED;
}
}
}
SaveEntityPosition( check );
// translate the entity
physics->Translate( checkMove );
#ifdef TRANSLATIONAL_PUSH_DEBUG
// set the pusher in the translated position
clipModel->Link( gameLocal.clip, clipModel->GetEntity(), clipModel->GetId(), newOrigin, clipModel->GetAxis() );
if ( physics->ClipContents( clipModel ) ) {
if ( !startsolid ) {
int bah = 1;
}
}
#endif
return PUSH_OK;
}
int idPush::TryTranslatePushEntity( trace_t &results, idEntity *check, idClipModel *clipModel, const int flags,
const idVec3 &newOrigin, const idVec3 &move ) {
trace_t trace;
idVec3 checkMove;
idVec3 oldOrigin;
idPhysics* physics = check->GetPhysics();
#ifdef TRANSLATIONAL_PUSH_DEBUG
bool startsolid = false;
if ( physics->ClipContents( clipModel ) ) {
startsolid = true;
}
#endif
results.fraction = 1.0f;
results.endpos = newOrigin;
results.endAxis = clipModel->GetAxis();
memset( &results.c, 0, sizeof( results.c ) );
// always pushed when standing on the pusher
if ( physics->IsGroundClipModel( clipModel->GetEntity()->entityNumber, clipModel->GetId() ) ) {
// move the entity colliding with all other entities except the pusher itself
// grayman #3029 - if this is an AI with attachments, we have to make them
// temporarily non-solid for the translation check. Though weapons don't
// impede movement, pauldrons do.
if ( check->IsType(idAI::Type) )
{
idAI* checkAI = static_cast<idAI*>(check);
checkAI->SaveAttachmentContents();
checkAI->SetAttachmentContents(0);
ClipEntityTranslation( trace, check, NULL, clipModel, move );
checkAI->RestoreAttachmentContents();
}
else
{
ClipEntityTranslation( trace, check, NULL, clipModel, move );
}
// if there is a collision
if ( trace.fraction < 1.0f ) {
// vector along which the entity is pushed
checkMove = move * trace.fraction;
// test if the entity can stay at it's partly pushed position by moving the entity in reverse only colliding with pusher
ClipEntityTranslation( results, check, clipModel, NULL, -(move - checkMove) );
// if there is a collision
if ( results.fraction < 1.0f ) {
// FIXME: try to push the blocking entity as well or try to slide along collision plane(s)?
results.c.normal = -results.c.normal;
results.c.dist = -results.c.dist;
// the entity will be crushed between the pusher and some other entity
return PUSH_BLOCKED;
}
}
else {
// vector along which the entity is pushed
checkMove = move;
}
}
else
{
// move entity in reverse only colliding with pusher
ClipEntityTranslation( results, check, clipModel, NULL, -move );
// if no collision with the pusher then the entity is not pushed by the pusher
if ( results.fraction >= 1.0f )
{
return PUSH_NO;
}
// greebo: At this point, the pushes knows that the check entity is in the way
// Normally, the pusher tries to rotate the entity to see if the entity itself
// is colliding with anything else, but for players, we want to (optionally) skip that.
if ((flags & PUSHFL_NOPLAYER) && check->IsType(idPlayer::Type))
{
// We are colliding with a player and are not allowed to push it, return BLOCKED
results.c.normal = -results.c.normal;
results.c.dist = -results.c.dist;
return PUSH_BLOCKED;
}
// vector along which the entity is pushed
checkMove = move * (1.0f - results.fraction);
// move the entity colliding with all other entities except the pusher itself
ClipEntityTranslation( trace, check, NULL, clipModel, checkMove );
// if there is a collisions
if ( trace.fraction < 1.0f ) {
results.c.normal = -results.c.normal;
results.c.dist = -results.c.dist;
// FIXME: try to push the blocking entity as well ?
// FIXME: handle sliding along more than one collision plane ?
// FIXME: this code has issues, player pushing box into corner in "maps/mre/aaron/test.map"
/*
oldOrigin = physics->GetOrigin();
// movement still remaining
checkMove *= (1.0f - trace.fraction);
// project the movement along the collision plane
if ( !checkMove.ProjectAlongPlane( trace.c.normal, 0.1f, 1.001f ) ) {
return PUSH_BLOCKED;
}
checkMove *= 1.001f;
// move entity from collision point along the collision plane
physics->SetOrigin( trace.endpos );
ClipEntityTranslation( trace, check, NULL, NULL, checkMove );
if ( trace.fraction < 1.0f ) {
physics->SetOrigin( oldOrigin );
return PUSH_BLOCKED;
}
checkMove = trace.endpos - oldOrigin;
// move entity in reverse only colliding with pusher
physics->SetOrigin( trace.endpos );
ClipEntityTranslation( trace, check, clipModel, NULL, -move );
physics->SetOrigin( oldOrigin );
*/
if ( trace.fraction < 1.0f ) {
return PUSH_BLOCKED;
}
}
}
SaveEntityPosition( check );
// translate the entity
physics->Translate( checkMove );
#ifdef TRANSLATIONAL_PUSH_DEBUG
// set the pusher in the translated position
clipModel->Link( gameLocal.clip, clipModel->GetEntity(), clipModel->GetId(), newOrigin, clipModel->GetAxis() );
if ( physics->ClipContents( clipModel ) ) {
if ( !startsolid ) {
int bah = 1;
}
}
#endif
return PUSH_OK;
}
