private static void Player_PickAmmo(ILContext il)
{
int firstAmmoIndex = il.AddVariable(typeof(Item));
int canShootIndex = il.GetParameterIndex("canShoot");
ILCursor cursor = new ILCursor(il);
ILLabel elseLabel = cursor.DefineLabel();
ILLabel endLabel = cursor.DefineLabel();
cursor.Emit(OpCodes.Newobj, typeof(Item).GetConstructors()[0]);
cursor.Emit(OpCodes.Stloc, firstAmmoIndex);
if (cursor.TryGotoNext(i => i.MatchNewobj(typeof(Item).GetConstructors()[0]), i => i.MatchStloc(0)))
{
cursor.Index += 2;
cursor.Emit(OpCodes.Ldarg, 0);
cursor.Emit(OpCodes.Ldarg, 1);
cursor.EmitDelegate <Func <Player, Item, Item> >((player, sItem) => player.inventory.OfType <BaseAmmoBag>().SelectMany(x => x.Handler.Items).FirstOrDefault(ammo => ammo.ammo == sItem.useAmmo && ammo.stack > 0));
cursor.Emit(OpCodes.Stloc, firstAmmoIndex);
cursor.Emit(OpCodes.Ldloc, firstAmmoIndex);
cursor.Emit(OpCodes.Brfalse, elseLabel);
cursor.Emit(OpCodes.Ldloc, firstAmmoIndex);
cursor.Emit(OpCodes.Stloc, 0);
cursor.Emit(OpCodes.Ldarg, canShootIndex);
cursor.Emit(OpCodes.Ldc_I4, 1);
cursor.Emit(OpCodes.Stind_I1);
cursor.Emit(OpCodes.Br, endLabel);
}
if (cursor.TryGotoNext(i => i.MatchLdcI4(0), i => i.MatchStloc(1), i => i.MatchLdcI4(54)))
{
cursor.MarkLabel(elseLabel);
}
if (cursor.TryGotoNext(i => i.MatchLdarg(3), i => i.MatchLdindU1(), i => i.MatchBrfalse(out _)))
{
cursor.MarkLabel(endLabel);
}
}
