fix mixin

Author: RedthMC

gradle.properties

@@ -5,7 +5,7 @@ mod_name=BarrierVisibility
 # Sets the id of your mod that mod loaders use to recognize it.
 mod_id=barriervisibility
 # Sets the version of your mod. Make sure to update this when you make changes according to semver.
-mod_version=1.1.1
+mod_version=1.1.2
 # Sets the name of the jar file that you put in your 'mods' folder.
 mod_archives_name=BarrierVisibility
 

root.gradle.kts

@@ -5,7 +5,5 @@ plugins {
 }
 
 preprocess {
-    "1.12.2-forge"(11202, "srg") {
-        "1.8.9-forge"(10809, "srg")
-    }
+    "1.8.9-forge"(10809, "srg")
 }

src/main/java/me/redth/barriervisibility/mixin/MixinBlockBarrier.java

@@ -16,7 +16,7 @@
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
 @Mixin(BlockBarrier.class)
-public class MixinBlockBarrier extends Block {
+public abstract class MixinBlockBarrier extends Block {
     public MixinBlockBarrier(Material blockMaterialIn) {
         super(blockMaterialIn);
     }

src/main/java/me/redth/barriervisibility/mixin/MixinBlockStateMapper.java

@@ -9,7 +9,7 @@
 import java.util.Set;
 
 @Mixin(BlockStateMapper.class)
-public class MixinBlockStateMapper {
+public abstract class MixinBlockStateMapper {
     @Redirect(method = "putAllStateModelLocations", at = @At(value = "INVOKE", target = "Ljava/util/Set;contains(Ljava/lang/Object;)Z"))
     public boolean getRenderType(Set instance, Object o) {
         return o != Blocks.barrier && instance.contains(o);

src/main/java/me/redth/barriervisibility/mixin/MixinWorldClient.java

@@ -9,7 +9,7 @@
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
 @Mixin(WorldClient.class)
-public class MixinWorldClient {
+public abstract class MixinWorldClient {
     @Inject(method = "doVoidFogParticles", at = @At("HEAD"), cancellable = true)
     public void getRenderType(CallbackInfo ci) {
         if (BarrierVisibility.config.enabled && ModConfig.hideBarrierParticles)