feat: netherPortalSize

src/main/java/com/github/zly2006/carpetslsaddition/SLSCarpetSettings.java

@@ -59,4 +59,7 @@ public class SLSCarpetSettings {
 
     @Rule(categories = {SLSA, RuleCategory.FEATURE})
     public static boolean armadilloImmediateDespawns = false;
+
+    @Rule(categories = {SLSA, RuleCategory.FEATURE})
+    public static int netherPortalSize = 21;
 }

src/main/java/com/github/zly2006/carpetslsaddition/mixin/block/MixinNetherPortal.java

@@ -0,0 +1,19 @@
+package com.github.zly2006.carpetslsaddition.mixin.block;
+
+import com.github.zly2006.carpetslsaddition.SLSCarpetSettings;
+import net.minecraft.world.dimension.NetherPortal;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.Constant;
+import org.spongepowered.asm.mixin.injection.ModifyConstant;
+
+@Mixin(NetherPortal.class)
+public class MixinNetherPortal {
+    @ModifyConstant(
+            method = "*",
+            constant = @Constant(intValue = 21),
+            require = 0
+    )
+    private int portalSize(int original) {
+        return SLSCarpetSettings.netherPortalSize;
+    }
+}