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using System.Diagnostics.CodeAnalysis;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Mono.Cecil;
using Mono.Cecil.Cil;
using StardewModdingAPI.AssemblyRewriters.Framework;
namespace StardewModdingAPI.AssemblyRewriters.Rewriters
{
/// <summary>Rewrites references to <see cref="SpriteBatch"/> to fix inconsistent method signatures between MonoGame and XNA.</summary>
/// <remarks>MonoGame has one <c>SpriteBatch.Begin</c> method with optional arguments, but XNA has multiple method overloads. Incompatible method references are rewritten to use <see cref="WrapperMethods"/>, which redirects all method signatures to the proper compiled MonoGame/XNA method.</remarks>
public class SpriteBatchRewriter : BaseMethodRewriter
{
/*********
** Protected methods
*********/
/// <summary>Get whether a method reference should be rewritten.</summary>
/// <param name="instruction">The IL instruction.</param>
/// <param name="methodRef">The method reference.</param>
/// <param name="platformChanged">Whether the mod was compiled on a different platform.</param>
protected override bool ShouldRewrite(Instruction instruction, MethodReference methodRef, bool platformChanged)
{
return platformChanged
&& methodRef.DeclaringType.FullName == typeof(SpriteBatch).FullName
&& this.HasMatchingSignature(typeof(SpriteBatchRewriter.WrapperMethods), methodRef);
}
/// <summary>Rewrite a method for compatibility.</summary>
/// <param name="module">The module being rewritten.</param>
/// <param name="cil">The CIL rewriter.</param>
/// <param name="instruction">The instruction which calls the method.</param>
/// <param name="methodRef">The method reference invoked by the <paramref name="instruction"/>.</param>
/// <param name="assemblyMap">Metadata for mapping assemblies to the current platform.</param>
protected override void Rewrite(ModuleDefinition module, ILProcessor cil, Instruction instruction, MethodReference methodRef, PlatformAssemblyMap assemblyMap)
{
methodRef.DeclaringType = module.Import(typeof(SpriteBatchRewriter.WrapperMethods));
}
/*********
** Wrapper methods
*********/
/// <summary>Wraps <see cref="SpriteBatch"/> methods that are incompatible when converting compiled code between MonoGame and XNA.</summary>
public class WrapperMethods : SpriteBatch
{
/*********
** Public methods
*********/
/// <summary>Construct an instance.</summary>
public WrapperMethods(GraphicsDevice graphicsDevice) : base(graphicsDevice) { }
/****
** MonoGame signatures
****/
[SuppressMessage("ReSharper", "CS0109", Justification = "The 'new' modifier applies when compiled on Linux/Mac.")]
public new void Begin(SpriteSortMode sortMode, BlendState blendState, SamplerState samplerState, DepthStencilState depthStencilState, RasterizerState rasterizerState, Effect effect, Matrix? matrix)
{
base.Begin(sortMode, blendState, samplerState, depthStencilState, rasterizerState, effect, matrix ?? Matrix.Identity);
}
/****
** XNA signatures
****/
[SuppressMessage("ReSharper", "CS0109", Justification = "The 'new' modifier applies when compiled on Windows.")]
public new void Begin()
{
base.Begin();
}
[SuppressMessage("ReSharper", "CS0109", Justification = "The 'new' modifier applies when compiled on Windows.")]
public new void Begin(SpriteSortMode sortMode, BlendState blendState)
{
base.Begin(sortMode, blendState);
}
[SuppressMessage("ReSharper", "CS0109", Justification = "The 'new' modifier applies when compiled on Windows.")]
public new void Begin(SpriteSortMode sortMode, BlendState blendState, SamplerState samplerState, DepthStencilState depthStencilState, RasterizerState rasterizerState)
{
base.Begin(sortMode, blendState, samplerState, depthStencilState, rasterizerState);
}
[SuppressMessage("ReSharper", "CS0109", Justification = "The 'new' modifier applies when compiled on Windows.")]
public new void Begin(SpriteSortMode sortMode, BlendState blendState, SamplerState samplerState, DepthStencilState depthStencilState, RasterizerState rasterizerState, Effect effect)
{
base.Begin(sortMode, blendState, samplerState, depthStencilState, rasterizerState, effect);
}
[SuppressMessage("ReSharper", "CS0109", Justification = "The 'new' modifier applies when compiled on Windows.")]
public new void Begin(SpriteSortMode sortMode, BlendState blendState, SamplerState samplerState, DepthStencilState depthStencilState, RasterizerState rasterizerState, Effect effect, Matrix transformMatrix)
{
base.Begin(sortMode, blendState, samplerState, depthStencilState, rasterizerState, effect, transformMatrix);
}
}
}
}
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