add piston push limit

src/main/java/me/youhavetrouble/moregamerules/ExtraGameRule.java

@@ -11,8 +11,8 @@ public class ExtraGameRule {
     public static GameRules.Key<GameRules.IntRule> ELYTRA_DAMAGE_PER_SECOND;
     public static GameRules.Key<GameRules.IntRule> ELYTRA_DAMAGE_FROM_FIREWORK_BOOST;
     public static GameRules.Key<GameRules.IntRule> ELYTRA_DAMAGE_FROM_RIPTIDE_BOOST;
-
     public static GameRules.Key<GameRules.BooleanRule> PLAYER_CRITS;
+    public static GameRules.Key<GameRules.IntRule> PISTON_PUSH_LIMIT;
 
     protected static void init() {
         MAGMA_BLOCK_DAMAGE = GameRuleRegistry.register(
@@ -45,6 +45,11 @@ public class ExtraGameRule {
                 GameRules.Category.PLAYER,
                 GameRuleFactory.createBooleanRule(true)
         );
+        PISTON_PUSH_LIMIT = GameRuleRegistry.register(
+                "pistonPushLimit",
+                GameRules.Category.MISC,
+                GameRuleFactory.createIntRule(12, 0, 512)
+        );
     }
 
 }

src/main/java/me/youhavetrouble/moregamerules/mixin/PistonPushLimitMixin.java

@@ -0,0 +1,27 @@
+package me.youhavetrouble.moregamerules.mixin;
+
+import me.youhavetrouble.moregamerules.ExtraGameRule;
+import net.minecraft.block.piston.PistonHandler;
+import net.minecraft.world.World;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.Constant;
+import org.spongepowered.asm.mixin.injection.ModifyConstant;
+
+import java.lang.reflect.Field;
+
+@Mixin(PistonHandler.class)
+public class PistonPushLimitMixin {
+
+    @ModifyConstant(method = "tryMove", constant = @Constant(intValue = 12))
+    private int injectedPushLimit(int range) throws NoSuchFieldException, IllegalAccessException {
+        PistonHandler pistonHandler = (PistonHandler)(Object) this;
+
+        // Get the associated world
+        Field worldField = PistonHandler.class.getDeclaredField("world");
+        worldField.setAccessible(true);
+        World world = (World) worldField.get(pistonHandler);
+
+        return world.getGameRules().getInt(ExtraGameRule.PISTON_PUSH_LIMIT);
+    }
+
+}

src/main/resources/assets/moregamerules/lang/en_us.json

@@ -7,8 +7,10 @@
   "gamerule.elytraDamagePerSecond.description": "Controls how much damage elytras take when flying",
   "gamerule.elytraDamageFromFirework": "Elytra damage from firework boost",
   "gamerule.elytraDamageFromFirework.description": "Controls how much damage elytras take when boosting with a firework",
-  "gamerule.elytraDamageFromRiptideTrident": "Elytra damage from firework boost",
+  "gamerule.elytraDamageFromRiptideTrident": "Elytra damage from trident boost",
   "gamerule.elytraDamageFromRiptideTrident.description": "Controls how much damage elytras take when boosting with a riptide trident",
   "gamerule.playerCrits": "Player crits",
-  "gamerule.playerCrits.description": "Decides if players should be able to crit"
+  "gamerule.playerCrits.description": "Decides if players should be able to crit",
+  "gamerule.pistonPushLimit": "Piston push limit",
+  "gamerule.description": "Controls how many blocks pistons can push"
 }

src/main/resources/moregamerules.mixins.json

@@ -6,6 +6,7 @@
   "mixins": [
     "FireworkItemMixin",
     "LivingEntityMixin",
+    "PistonPushLimitMixin",
     "PlayerEntityMixin",
     "ServerWorldMixin",
     "TridentItemMixin"