BizHawk/BizHawk.Emulation.Common/Interfaces/IEmulator.cs

72 lines
3.1 KiB
C#

using System;
namespace BizHawk.Emulation.Common
{
/// <summary>
/// This service defines a core as a core. It is the primary service
/// and the absolute minimum requirement to have a functional core in BizHawk
/// a client can not operate without this minimum requirement
/// </summary>
public interface IEmulator : IEmulatorService, IDisposable
{
/// <summary>
/// Gets the service provider.
/// This is the intended mechanism to get services from a core
/// Retrieves an IEmulatorService from the core,
/// if the core does not have the type specified, it will return null
/// </summary>
IEmulatorServiceProvider ServiceProvider { get; }
/// <summary>
/// Gets the definition that defines all the possible inputs and types that the core can receive
/// By design this should not change during the lifetime of the instance of the core
/// To change the definition, a new instance should be created
/// </summary>
ControllerDefinition ControllerDefinition { get; }
/// <summary>
/// Runs the emulator core for 1 frame
/// note that (some?) cores expect you to call SoundProvider.GetSamples() after each FrameAdvance()
/// please do this, even when <seealso cref="renderSound"/> = false
/// <param name="controller">The <seealso cref="IController"/> instance that the core will use for input.
/// The <seealso cref="IController"/> provided by the client must provide the buttons specified by the core through the <seealso cref="ControllerDefinition"/> property
/// </param>
/// <param name="render">Whether or not to render video, cores will pass false here in cases such as frame skipping</param>
/// <param name="renderSound">Whether or not to render audio, cores will pass here false here in cases such as fast forwarding where bypassing sound may improve speed</param>
/// </summary>
bool FrameAdvance(IController controller, bool render, bool renderSound = true);
/// <summary>
/// Gets the current frame count
/// </summary>
int Frame { get; }
/// <summary>
/// Gets the unique Id of the platform currently being emulated, for instance "NES"
/// </summary>
string SystemId { get; }
/// <summary>
/// Gets a value indicating whether the core is in deterministic mode.
/// This flag is a contract with the client.
/// If true, the core agrees to behave in a completely deterministic manner,
/// Features like movie recording depend on this.
/// It is the client's responsibility to manage this flag.
/// If a core wants to implement non-deterministic features (like speed hacks, frame-skipping), it must be done only when this flag is false
/// if you want to set this, look in the emulator's constructor or Load() method
/// </summary>
bool DeterministicEmulation { get; }
/// <summary>
/// Resets the Frame and Lag counters, and any other similar counters a core might implement
/// </summary>
void ResetCounters();
/// <summary>
/// Gets the core communications module in use by this core.
/// </summary>
/// <seealso cref="BizHawk.Emulation.Common.CoreComm" />
CoreComm CoreComm { get; }
}
}