public unsafe void Render()
{
if (_activeCount > 0)
{
fixed (MetaParticle* buffer = _buffer)
{
var iterator = new ParticleIterator(buffer, _bufferSize, _head, _activeCount);
_stateManager.Render(ref iterator);
}
}
}
public unsafe void Trigger(float totalSeconds, Vector2 position)
{
fixed (MetaParticle* buffer = _buffer)
{
var startIndex = _next;
var released = 0;
for (var i = 0; i < ReleaseQuantity; i++)
{
var index = Push();
if (index < 0)
break;
Vector2 dir;
Vector2 off;
_shape.GetOffsetAndDirection(out off, out dir);
var releaseInfo = new ReleaseInformation(totalSeconds, position + off, dir);
(buffer + index)->ReleaseInfo = releaseInfo;
released++;
}
if (released > 0)
{
var iterator = new ParticleIterator(buffer, _bufferSize, startIndex, released);
_stateManager.Trigger(ref iterator);
}
}
}
public unsafe void Update(float totalSeconds, float deltaSeconds)
{
if (_activeCount == 0)
return;
fixed (MetaParticle* buffer = _buffer)
{
var expired = 0;
var iteration = 0;
do
{
var meta = buffer + ((_head + iteration) % _bufferSize);
meta->Age = (totalSeconds - meta->ReleaseInfo.TotalSeconds) / _term;
if (meta->Age > 1f)
expired++;
}
while (++iteration < _activeCount);
if (expired > 0)
Pop(expired);
var iterator = new ParticleIterator(buffer, _bufferSize, _head, _activeCount);
_stateManager.Update(ref iterator, deltaSeconds);
}
}
