void BemGame::MoveParticles()
{
// const GlFixed g = -0.003;
const int alphaDelta = 3;
GlFixed half;
half.v = GlFixed_1 / 2;
// GlFixed oldz;
Particle* particle;
GlCircleListIterator<Particle> it( particleList );
for( it.Begin(); !it.Done(); it.Next() )
{
particle = &it.Current();
particle->x += particle->vx;
particle->y += particle->vy;
// oldz = particle->z;
particle->z += particle->vz;
// particle->vz += g;
GlFixed mapx = particle->x + half;
GlFixed mapy = particle->y + half;
int tx = mapx.ToInt();
int ty = mapy.ToInt();
// Check for gizmo hit:
if ( GetMap( tx, MAPY - 1 - ty ) == GIZMO )
{
engine->Tree()->DeleteNode( particle->sprite );
it.Remove();
it.Prev();
continue;
}
int sx, sy;
isoMath->TileToScreen( particle->x, particle->y, particle->z,
&sx, &sy );
particle->sprite->SetPos( sx, sy );
GlFixed x, y, z;
isoMath->TileToWorld( particle->x, particle->y, particle->z,
&x, &y, &z );
particle->sprite->SetZDepth( -z.v );
KrColorTransform color;
color = particle->sprite->CTransform();
// Get rid of off screen:
if ( color.Alpha() <= alphaDelta
|| sx < 0 || sy < 0
|| sx > engine->FullScreenBounds().max.x
|| sy > engine->FullScreenBounds().max.y )
{
engine->Tree()->DeleteNode( particle->sprite );
it.Remove();
it.Prev();
continue;
}
color.SetAlpha( color.Alpha() - alphaDelta );
particle->sprite->SetColor( color );
}
}
