66 lines
3.5 KiB
C#
66 lines
3.5 KiB
C#
using System.Collections.Generic;
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using System.Reflection;
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using System.Reflection.Emit;
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using HarmonyLib;
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using NitroxClient.GameLogic;
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using NitroxModel.Helper;
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using UnityEngine;
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namespace NitroxPatcher.Patches.Dynamic;
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/// <summary>
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/// Replaces local use of <see cref="Time.deltaTime"/> by <see cref="TimeManager.DeltaTime"/> and prevents remote bullets from detecting collisions
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/// </summary>
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public sealed partial class Bullet_Update_Patch : NitroxPatch, IDynamicPatch
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{
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internal static readonly MethodInfo TARGET_METHOD = Reflect.Method((Bullet t) => t.Update());
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/*
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* RaycastHit raycastHit;
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* REPLACE:
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* if (Physics.SphereCast(this.tr.position, this.shellRadius, this.tr.forward, out raycastHit, num, this.layerMask.value))
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* {
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* num = raycastHit.distance;
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* BY:
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* if (!Bullet_Update_Patch.IsRemoteObject(this) && Physics.SphereCast(this.tr.position, this.shellRadius, this.tr.forward, out raycastHit, num, this.layerMask.value))
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* {
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* num = raycastHit.distance;
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*/
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public static IEnumerable<CodeInstruction> Transpiler(IEnumerable<CodeInstruction> instructions, ILGenerator generator)
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{
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Label label = generator.DefineLabel();
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// Replace the two occurences of Time.deltaTime
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return new CodeMatcher(instructions).ReplaceDeltaTime()
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.ReplaceDeltaTime()
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.MatchStartForward([
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new CodeMatch(OpCodes.Ldarg_0),
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new CodeMatch(OpCodes.Call, Reflect.Property((Bullet t) => t.tr).GetGetMethod()),
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new CodeMatch(OpCodes.Callvirt, Reflect.Property((Transform t) => t.position).GetGetMethod()),
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new CodeMatch(OpCodes.Ldarg_0),
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])
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// Skip the Ldarg_0 because it is the previous ifs' jump target
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.Advance(1)
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// Insert if (!Bullet_Update_Patch.IsRemoteObject(this)) before the condition
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.InsertAndAdvance([
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new CodeInstruction(OpCodes.Call, Reflect.Method(() => IsRemoteObject(default))),
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new CodeInstruction(OpCodes.Brtrue_S, label),
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new CodeInstruction(OpCodes.Ldarg_0),
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])
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// Find the destination of the position to go to
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.MatchStartForward([
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new CodeMatch(OpCodes.Ldarg_0),
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new CodeMatch(OpCodes.Call, Reflect.Property((Bullet t) => t.tr).GetGetMethod()),
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new CodeMatch(OpCodes.Dup),
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new CodeMatch(OpCodes.Callvirt, Reflect.Property((Transform t) => t.position).GetGetMethod())
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])
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.AddLabels([label])
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.InstructionEnumeration();
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}
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public static bool IsRemoteObject(Bullet bullet)
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{
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return bullet.GetComponent<BulletManager.RemotePlayerBullet>();
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}
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}
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