using Sand.Core;

namespace Sand.App;

internal interface ISimulationBackend
{
    string BackendName { get; }
    SimulationSettings Settings { get; }
    AppSimulationFrameStats FrameStats { get; }
    int Frame { get; }
    int ParticleCount { get; }
    ReadOnlySpan<byte> BuildRgbaFrame();
    void Step(float dt);
    void Clear();
    void RefreshSettingsState();
    void ClearParticleCircle(int centerX, int centerY, int brushRadius);
    void ClearParticlePourAtPixel(int centerX, int centerY, int brushRadius, int maxParticles, int seed);
    void CreateParticleCircle(int centerX, int centerY, int brushRadius, string particleId);
    void CreateParticlePourAtPixel(int centerX, int centerY, int brushRadius, string particleId, int maxParticles, int seed);
    void ApplyWindBrushAtPixel(int centerX, int centerY, int brushRadius, float forceX, float forceY);
    void ApplyAirBrushAtPixel(int centerX, int centerY, int brushRadius, float forceX, float forceY);
    void ApplyGravityBrushAtPixel(int centerX, int centerY, int brushRadius, float strength);
    void ApplyRepulsorBrushAtPixel(int centerX, int centerY, int brushRadius, float strength);
}