gamerule for toggling player crits

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

@@ -12,6 +12,8 @@ public class ExtraGameRule {
     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;
+
     protected static void init() {
         MAGMA_BLOCK_DAMAGE = GameRuleRegistry.register(
                 "magmaBlockDamage",
@@ -38,6 +40,11 @@ public class ExtraGameRule {
                 GameRules.Category.MISC,
                 GameRuleFactory.createIntRule(0, 0, Integer.MAX_VALUE)
         );
+        PLAYER_CRITS = GameRuleRegistry.register(
+                "playerCrits",
+                GameRules.Category.PLAYER,
+                GameRuleFactory.createBooleanRule(true)
+        );
     }
 
 }

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

@@ -0,0 +1,21 @@
+package me.youhavetrouble.moregamerules.mixin;
+
+import me.youhavetrouble.moregamerules.ExtraGameRule;
+import net.minecraft.entity.player.PlayerEntity;
+import org.objectweb.asm.Opcodes;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(PlayerEntity.class)
+public class PlayerEntityMixin {
+
+    @Redirect(method = "attack", at = @At(value = "FIELD", target = "Lnet/minecraft/entity/player/PlayerEntity;fallDistance:F", opcode = Opcodes.GETFIELD))
+    private float injected(PlayerEntity instance) {
+        if (instance.world.getGameRules().getBoolean(ExtraGameRule.PLAYER_CRITS)) {
+            return instance.fallDistance;
+        }
+        return 0f;
+    }
+
+}

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

@@ -8,5 +8,7 @@
   "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.description": "Controls how much damage elytras take when boosting with a riptide trident"
+  "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"
 }

src/main/resources/moregamerules.mixins.json

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