Fix 26.3 compatibility issues

src/main/java/meteordevelopment/meteorclient/mixin/ConnectionMixin.java

@@ -30,9 +30,13 @@
 import net.minecraft.network.protocol.PacketFlow;
 import net.minecraft.network.protocol.game.ClientGamePacketListener;
 import net.minecraft.network.protocol.game.ClientboundBundlePacket;
+import net.minecraft.network.protocol.game.ServerboundClientTickEndPacket;
+import net.minecraft.network.protocol.game.ServerboundMovePlayerPacket;
 import net.minecraft.server.network.EventLoopGroupHolder;
 import org.jspecify.annotations.Nullable;
 import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.Unique;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
@@ -82,6 +86,26 @@ private void onSendPacketTail(Packet<?> packet, @Nullable ChannelFutureListener
         MeteorClient.EVENT_BUS.post(new PacketEvent.Sent(packet, (Connection) (Object) this));
     }
 
+    @Unique
+    private boolean sentPositionThisTick;
+
+    @Inject(method = "doSendPacket(Lnet/minecraft/network/protocol/Packet;Lio/netty/channel/ChannelFutureListener;Z)V", at = @At("HEAD"))
+    private void onDoSendPacket(Packet<?> packet, @Nullable ChannelFutureListener listener, boolean flush, CallbackInfo ci) {
+        if (packet instanceof ServerboundClientTickEndPacket) {
+            sentPositionThisTick = false;
+            return;
+        }
+
+        if (!(packet instanceof ServerboundMovePlayerPacket move) || !move.hasPosition()) return;
+
+        if (sentPositionThisTick) sendPacket(ServerboundClientTickEndPacket.INSTANCE, null, false);
+
+        sentPositionThisTick = true;
+    }
+
+    @Shadow
+    private void sendPacket(Packet<?> packet, @Nullable ChannelFutureListener listener, boolean flush) {}
+
     @Inject(method = "exceptionCaught", at = @At("HEAD"), cancellable = true)
     private void exceptionCaught(ChannelHandlerContext ctx, Throwable cause, CallbackInfo ci) {
         AntiPacketKick apk = Modules.get().get(AntiPacketKick.class);

src/main/java/meteordevelopment/meteorclient/mixin/TitleScreenMixin.java

@@ -27,12 +27,12 @@ public TitleScreenMixin(Component title) {
 
     @Inject(method = "extractRenderState", at = @At("TAIL"))
     private void onExtractRenderState(GuiGraphicsExtractor graphics, int mouseX, int mouseY, float a, CallbackInfo ci) {
-        if (Config.get().titleScreenCredits.get()) TitleScreenCredits.render(graphics);
+        if (Config.get() != null && Config.get().titleScreenCredits.get()) TitleScreenCredits.render(graphics);
     }
 
     @Inject(method = "mouseClicked", at = @At("HEAD"), cancellable = true)
     private void onMouseClicked(MouseButtonEvent event, boolean doubleClick, CallbackInfoReturnable<Boolean> cir) {
-        if (Config.get().titleScreenCredits.get() && event.button() == InputConstants.MOUSE_BUTTON_LEFT) {
+        if (Config.get() != null && Config.get().titleScreenCredits.get() && event.button() == InputConstants.MOUSE_BUTTON_LEFT) {
             if (TitleScreenCredits.onClicked(event.x(), event.y())) cir.setReturnValue(true);
         }
     }

src/main/java/meteordevelopment/meteorclient/mixin/sodium/SodiumDefaultFluidRendererMixin.java

@@ -6,7 +6,6 @@
 package meteordevelopment.meteorclient.mixin.sodium;
 
 import com.llamalad7.mixinextras.injector.ModifyReturnValue;
-import com.llamalad7.mixinextras.sugar.Local;
 import meteordevelopment.meteorclient.systems.modules.Modules;
 import meteordevelopment.meteorclient.systems.modules.render.Xray;
 import net.caffeinemc.mods.sodium.client.model.color.ColorProvider;
@@ -67,16 +66,23 @@ private void onRender(LevelSlice level, BlockState blockState, FluidState fluidS
     }
 
     @ModifyReturnValue(method = "isFullBlockFluidSideVisible", at = @At("RETURN"))
-    private boolean onIsFullBlockFluidSideVisible(boolean original, BlockGetter view, BlockPos selfPos, Direction facing, FluidState fluid, @Local(name = "otherState") BlockState otherState) {
+    private boolean onIsFullBlockFluidSideVisible(boolean original, BlockGetter view, BlockPos selfPos, Direction facing, FluidState fluid) {
         if (original || !forceXrayFluidSides || facing.getAxis().isVertical()) return original;
+        // Sodium 0.9.2 for 26.3 no longer exposes the neighbor state as a local variable here,
+        // so we query it from the BlockGetter ourselves. Semantics are identical.
+        BlockState otherState = view.getBlockState(selfPos.relative(facing));
         if (!xray.isBlocked(otherState.getBlock(), null)) return false;
 
         return !otherState.getFluidState().getType().isSame(fluid.getType());
     }
 
-    @ModifyReturnValue(method = "isFluidSideExposed(Lnet/minecraft/world/level/block/state/BlockState;Lnet/minecraft/world/level/block/state/BlockState;Lnet/minecraft/core/Direction;F)Z", at = @At("RETURN"))
-    private boolean onIsFluidSideExposed(boolean original, BlockState ownBlockState, BlockState neighborBlockState, Direction facing, float height) {
+    // In Sodium 0.9.2 (MC 26.3) the old 4-param isFluidSideExposed(BlockState, BlockState, Direction, float)
+    // is inlined into its 5-param entrypoint, so we can no longer inject on it. Target the public entrypoint instead
+    // and re-derive the neighbor state from BlockAndTintGetter + pos.
+    @ModifyReturnValue(method = "isFluidSideExposed(Lnet/minecraft/client/renderer/block/BlockAndTintGetter;Lnet/minecraft/world/level/block/state/BlockState;Lnet/minecraft/core/BlockPos;Lnet/minecraft/core/Direction;F)Z", at = @At("RETURN"))
+    private boolean onIsFluidSideExposed(boolean original, BlockAndTintGetter level, BlockState ownBlockState, BlockPos pos, Direction facing, float height) {
         if (original || !forceXrayFluidSides || facing.getAxis().isVertical()) return original;
+        BlockState neighborBlockState = level.getBlockState(pos.relative(facing));
         if (!xray.isBlocked(neighborBlockState.getBlock(), null)) return false;
 
         return !neighborBlockState.getFluidState().getType().isSame(ownBlockState.getFluidState().getType());