portal suffocation and antiCheat disabled.

src/main/java/carpet/mixins/Entity_portalSuffocationMixin.java

@@ -0,0 +1,51 @@
+package carpet.mixins;
+
+import carpet.settings.CarpetSettings;
+import net.minecraft.entity.Entity;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Box;
+import net.minecraft.world.dimension.DimensionType;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.Redirect;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+@Mixin(Entity.class)
+public abstract class Entity_portalSuffocationMixin
+{
+    @Shadow public abstract Box getBoundingBox();
+
+    @Inject(method = "changeDimension", at = @At(
+            value = "INVOKE",
+            target = "Lnet/minecraft/entity/Entity;getLastPortalDirection()Lnet/minecraft/util/math/Direction;"
+    ))
+    private void registerEntityDimensionChange(DimensionType dimensionType_1, CallbackInfoReturnable<Entity> cir)
+    {
+        if (CarpetSettings.portalSuffocationFix)
+        {
+            CarpetSettings.currentTelepotingEntityBox = getBoundingBox();
+            CarpetSettings.fixedPosition = null;
+        }
+    }
+
+    @Redirect(method = "changeDimension", at = @At(
+            value = "INVOKE",
+            target = "Lnet/minecraft/entity/Entity;setPositionAndAngles(Lnet/minecraft/util/math/BlockPos;FF)V"
+    ))
+    private void alternativeSetPositionAndAngles(Entity entity, BlockPos blockPos_1, float float_1, float float_2)
+    {
+        if (CarpetSettings.portalSuffocationFix && CarpetSettings.fixedPosition != null)
+            entity.setPositionAndAngles(CarpetSettings.fixedPosition.x, CarpetSettings.fixedPosition.y, CarpetSettings.fixedPosition.z, float_1, float_2);
+        else
+            entity.setPositionAndAngles(blockPos_1, float_1, float_2);
+    }
+
+    @Inject(method = "changeDimension", at = @At("RETURN"))
+    private void removeEntity(DimensionType dimensionType_1, CallbackInfoReturnable<Entity> cir)
+    {
+        CarpetSettings.currentTelepotingEntityBox = null;
+        CarpetSettings.fixedPosition = null;
+    }
+}