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Performance improvements to ParticleSystem.

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dnesov
2024-10-15 23:09:10 +02:00
parent 40ff986312
commit 446149c80d
2 changed files with 10 additions and 12 deletions
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2
TestGame/Resources/test_emitter.toml
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@@ -1,6 +1,6 @@
[ParticleEmitterSettings] [ParticleEmitterSettings]
MaxParticles = 4096 MaxParticles = 8096
EmitRadius = 128 EmitRadius = 128
Explosiveness = 1.0 Explosiveness = 1.0
LifeTime = 1.0 LifeTime = 1.0

20
Voile/Source/Systems/ParticleSystem.cs
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@@ -165,23 +165,21 @@ public class ParticleEmitter : IUpdatableSystem
Emit(); Emit();
} }
var deltaTimeVector = new Vector2((float)deltaTime);
var lifeTimeInv = 1.0f / Settings.LifeTime;
var gravityVector = Settings.Gravity * (float)deltaTime;
var dampingFactor = Settings.Damping * (float)deltaTime;
for (int i = 0; i < _maxParticles; i++) for (int i = 0; i < _maxParticles; i++)
{ {
// var particle = _particles[i];
_lifetimes[i] = Math.Max(0.0f, _lifetimes[i] - (float)deltaTime); _lifetimes[i] = Math.Max(0.0f, _lifetimes[i] - (float)deltaTime);
var t = _lifetimes[i] / Settings.LifeTime; var t = _lifetimes[i] * lifeTimeInv;
_velocities[i] += Settings.Gravity * (float)deltaTime; _velocities[i] += gravityVector;
_positions[i] += _velocities[i] * (float)deltaTime; _positions[i] += _velocities[i] * deltaTimeVector;
// particle.Rotation += particle.AngularVelocity * (float)deltaTime;
// particle.Scale = MathUtils.Lerp(Settings.ScaleEnd, Settings.ScaleBegin, t);
var color = MathUtils.LerpColor(Settings.ColorEnd, Settings.ColorBegin, t); _velocities[i] -= _velocities[i] * dampingFactor;
// particle.ColorArgb = color.Argb;
_velocities[i] -= _velocities[i] * Settings.Damping * (float)deltaTime;
} }
} }