Use constants for a few magic numbers in rules

src/main/java/carpet/mixins/CloneCommands_fillUpdatesMixin.java

@@ -15,7 +15,7 @@ import org.spongepowered.asm.mixin.injection.Redirect;
 @Mixin(CloneCommands.class)
 public abstract class CloneCommands_fillUpdatesMixin
 {
-    @ModifyConstant(method = "clone", constant = @Constant(intValue = 32768))
+    @ModifyConstant(method = "clone", constant = @Constant(intValue = CarpetSettings.VANILLA_FILL_LIMIT))
     private static int fillLimit(int original) {
         return CarpetSettings.fillLimit;
     }

src/main/java/carpet/mixins/FillBiomeCommandMixin.java

@@ -9,7 +9,7 @@ import org.spongepowered.asm.mixin.injection.ModifyConstant;
 @Mixin(FillBiomeCommand.class)
 public class FillBiomeCommandMixin
 {
-	@ModifyConstant(method = "fill", constant = @Constant(intValue = 32768))
+	@ModifyConstant(method = "fill", constant = @Constant(intValue = CarpetSettings.VANILLA_FILL_LIMIT))
 	private static int fillLimit(int original)
 	{
 		return CarpetSettings.fillLimit;

src/main/java/carpet/mixins/FillCommandMixin.java

@@ -14,7 +14,7 @@ import org.spongepowered.asm.mixin.injection.Redirect;
 @Mixin(FillCommand.class)
 public abstract class FillCommandMixin
 {
-    @ModifyConstant(method = "fillBlocks", constant = @Constant(intValue = 32768))
+    @ModifyConstant(method = "fillBlocks", constant = @Constant(intValue = CarpetSettings.VANILLA_FILL_LIMIT))
     private static int fillLimit(int original)
     {
         return CarpetSettings.fillLimit;

src/main/java/carpet/mixins/PistonStructureResolver_pushLimitMixin.java

@@ -7,9 +7,9 @@ import org.spongepowered.asm.mixin.injection.Constant;
 import org.spongepowered.asm.mixin.injection.ModifyConstant;
 
 @Mixin(value = PistonStructureResolver.class, priority = 420)  // piston push limit is important for carpet
-public class PistonHandler_pushLimitMixin
+public class PistonStructureResolver_pushLimitMixin
 {
-    @ModifyConstant(method = "addBlockLine", constant = @Constant(intValue = 12), expect = 3)
+    @ModifyConstant(method = "addBlockLine", constant = @Constant(intValue = PistonStructureResolver.MAX_PUSH_DEPTH), expect = 3)
     private int pushLimit(int original)
     {
         return CarpetSettings.pushLimit;

src/main/java/carpet/mixins/ServerboundSetStructureBlockPacketMixin.java

@@ -6,6 +6,8 @@ import net.minecraft.core.Vec3i;
 import net.minecraft.network.FriendlyByteBuf;
 import net.minecraft.network.protocol.game.ServerboundSetStructureBlockPacket;
 import net.minecraft.util.Mth;
+import net.minecraft.world.level.block.entity.StructureBlockEntity;
+
 import org.spongepowered.asm.mixin.Final;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Mutable;
@@ -39,7 +41,7 @@ public class ServerboundSetStructureBlockPacketMixin {
     )
     private void structureBlockLimitsWrite(FriendlyByteBuf buf, CallbackInfo ci) {
         //client method, only applicable if with carpet is on the server, or running locally
-        if (CarpetSettings.structureBlockLimit != CarpetSettings.vanillaStructureBlockLimit)
+        if (CarpetSettings.structureBlockLimit != StructureBlockEntity.MAX_SIZE_PER_AXIS)
         {
             buf.writeInt(this.offset.getX());
             buf.writeInt(this.offset.getY());

src/main/java/carpet/mixins/StructureBlockEntity_fillUpdatesMixin.java

@@ -6,7 +6,6 @@ import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Redirect;
 
-import java.util.Random;
 import net.minecraft.core.BlockPos;
 import net.minecraft.world.level.ServerLevelAccessor;
 import net.minecraft.world.level.block.entity.StructureBlockEntity;

src/main/java/carpet/mixins/StructureBlockEntity_limitsMixin.java

@@ -14,7 +14,7 @@ public abstract class StructureBlockEntity_limitsMixin
 {
     @ModifyConstant(
             method = "load",
-            constant = @Constant(intValue = 48)
+            constant = @Constant(intValue = StructureBlockEntity.MAX_SIZE_PER_AXIS)
     )
     private int positiveLimit(int original) {
         return CarpetSettings.structureBlockLimit;
@@ -22,7 +22,7 @@ public abstract class StructureBlockEntity_limitsMixin
 
     @ModifyConstant(
             method = "load",
-            constant = @Constant(intValue = -48)
+            constant = @Constant(intValue = -StructureBlockEntity.MAX_SIZE_PER_AXIS)
     )
     private int negativeLimit(int original) {
         return -CarpetSettings.structureBlockLimit;