public BackgroundParticle(BackgroundParticle source, float px, float py, Direction4 dir)
{
OriginX = source.OriginX;
OriginY = source.OriginY;
X = px;
Y = py;
Fraction = source.Fraction;
RemainingPower = source.RemainingPower - 1;
Direction = dir;
}
private void AddParticle(BackgroundParticle p, int x, int y, bool ignoreBlockedSpawns = false)
{
if (p.RemainingPower <= 0) return;
if (blockedGridPoints[x, y].Any() && !ignoreBlockedSpawns) return;
switch (p.Direction)
{
case Direction4.North:
if (y <= 0) return;
p.TravelSection = particlesVertical[x, y - 1];
p.TravelSection.Add(p);
break;
case Direction4.East:
if (x >= TILE_COUNT_X) return;
p.TravelSection = particlesHorizontal[x, y];
p.TravelSection.Add(p);
break;
case Direction4.South:
if (y >= TILE_COUNT_Y) return;
p.TravelSection = particlesVertical[x, y];
p.TravelSection.Add(p);
break;
case Direction4.West:
if (x <= 0) return;
p.TravelSection = particlesHorizontal[x - 1, y];
p.TravelSection.Add(p);
break;
}
Particles.Add(p);
}
private void MergeParticles(BackgroundParticle a, BackgroundParticle b)
{
if (a.RemainingPower > b.RemainingPower)
RemoveParticle(a);
else
RemoveParticle(b);
}
private void RemoveParticles(BackgroundParticle a, BackgroundParticle b)
{
if (a.Fraction == b.Fraction)
{
RemoveParticle(a);
RemoveParticle(b);
}
else if (a.RemainingPower < b.RemainingPower)
{
RemoveParticle(a);
b.RemainingPower -= a.RemainingPower;
}
else if (a.RemainingPower > b.RemainingPower)
{
RemoveParticle(b);
a.RemainingPower -= b.RemainingPower;
}
else
{
RemoveParticle(a);
RemoveParticle(b);
}
}
private void RemoveParticle(BackgroundParticle p)
{
p.Alive = false;
p.TravelSection.Remove(p);
Particles.Remove(p);
}
private void ColorGridCell(GameTime gameTime, BackgroundParticle p, int x, int y)
{
if (x < -1) return;
if (y < -1) return;
if (x > TILE_COUNT_X) return;
if (y > TILE_COUNT_Y) return;
var power = gameTime.GetElapsedSeconds() * GRID_ADAPTION_SPEED * p.PowerPercentage;
ColorGridCellDirect(p.Fraction, x, y, power);
}