bool IsSpaceEmpty( CBaseEntity *pEntity )
{
bool bEmpty = true;
Vector vecMins, vecMaxs;
pEntity->GetAbsBounds( &vecMins, &vecMaxs );
// World bounds!
if ( !g_ScreenRect.contains( vecMins ) || !g_ScreenRect.contains( vecMaxs ) )
{
// Screen edges are always solid.
bEmpty = false;
}
for ( int i = 0; i < MAX_ENTITIES; i++ )
{
CBaseEntity *pOther = g_EntityList[i];
if ( !pOther || pOther == pEntity || pOther->GetSolidType() == SOLID_NO )
continue;
Vector vecOtherMins, vecOtherMaxs;
pOther->GetAbsBounds( &vecOtherMins, &vecOtherMaxs );
if ( IsBoxIntersectingBox( vecMins, vecMaxs, vecOtherMins, vecOtherMaxs ) )
{
if ( pOther->IsSolid() )
{
bEmpty = false;
}
}
}
return bEmpty;
}
//-----------------------------------------------------------------------------
// Purpose: "Physics" simulation.
//-----------------------------------------------------------------------------
void CBaseEntity::ProcessMovement( void )
{
// Test new position.
Vector vecNewOrigin = m_vecOrigin + m_vecVelocity * g_FrameTime;
Vector vecMins = vecNewOrigin + m_vecMins;
Vector vecMaxs = vecNewOrigin + m_vecMaxs;
// Test collision against other entities.
// Since movement amount depends on frame time and we only test the final position
// this whole system goes out of the window at low framerates.
bool bCanMove = true;
if ( GetSolidType() != SOLID_NO )
{
// World bounds!
if ( !g_ScreenRect.contains( vecMins ) || !g_ScreenRect.contains( vecMaxs ) )
{
TouchScreenEdge( vecNewOrigin );
// Screen edges are always solid.
if ( IsSolid() )
{
bCanMove = false;
}
}
for ( int i = 0; i < MAX_ENTITIES; i++ )
{
CBaseEntity *pEntity = g_EntityList[i];
if ( !pEntity || pEntity == this || pEntity->GetSolidType() == SOLID_NO )
continue;
Vector vecOtherMins, vecOtherMaxs;
pEntity->GetAbsBounds( &vecOtherMins, &vecOtherMaxs );
if ( IsBoxIntersectingBox( vecMins, vecMaxs, vecOtherMins, vecOtherMaxs ) )
{
OnCollide( pEntity );
if ( IsSolid() && pEntity->IsSolid() )
{
bCanMove = false;
}
}
}
}
if ( bCanMove )
m_vecOrigin = vecNewOrigin;
// Move the sprite if we have one.
if ( m_pSprite )
{
m_pSprite->setPosition( m_vecOrigin );
m_pSprite->setRotation( m_flAngle );
}
}
