feat: divergence and power for the pearl are now gamerules

src/main/java/systems/brn/tweaks/Tweaks.java

@@ -21,6 +21,12 @@ public class Tweaks implements ModInitializer {
     public static final GameRules.Key<GameRules.IntRule> CREEPER_FUSE_TIME =
             GameRuleRegistry.register("creeperDefaultFuseTime", GameRules.Category.PLAYER, GameRuleFactory.createIntRule(30, 0, Integer.MAX_VALUE));
 
+    public static final GameRules.Key<GameRules.IntRule> ENDER_PEARL_POWER =
+            GameRuleRegistry.register("enderPearlPower", GameRules.Category.PLAYER, GameRuleFactory.createIntRule(150, 0, Integer.MAX_VALUE));
+
+    public static final GameRules.Key<GameRules.IntRule> ENDER_PEARL_DIVERGENCE =
+            GameRuleRegistry.register("enderPearlDivergence", GameRules.Category.PLAYER, GameRuleFactory.createIntRule(100, 0, Integer.MAX_VALUE));
+
     @Override
     public void onInitialize() {
     }

src/main/java/systems/brn/tweaks/mixin/EnderPearlItemMixin.java

@@ -0,0 +1,57 @@
+package systems.brn.tweaks.mixin;
+
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.entity.projectile.thrown.EnderPearlEntity;
+import net.minecraft.item.EnderPearlItem;
+import net.minecraft.item.ItemStack;
+import net.minecraft.server.world.ServerWorld;
+import net.minecraft.util.ActionResult;
+import net.minecraft.util.Hand;
+import net.minecraft.world.World;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+import systems.brn.tweaks.Tweaks;
+
+@Mixin(EnderPearlItem.class)
+public class EnderPearlItemMixin {
+
+    @Inject(method = "use", at = @At("HEAD"), cancellable = true)
+    private void injectCustomVelocity(World world, PlayerEntity user, Hand hand,
+                                      CallbackInfoReturnable<ActionResult> cir) {
+
+        if (!(world instanceof ServerWorld serverWorld)) return;
+
+        ItemStack stack = user.getStackInHand(hand);
+
+        float power = serverWorld.getGameRules().getInt(Tweaks.ENDER_PEARL_POWER) / 100f;
+        float divergence = serverWorld.getGameRules().getInt(Tweaks.ENDER_PEARL_DIVERGENCE) / 100f;
+
+        world.playSound(
+                null,
+                user.getX(),
+                user.getY(),
+                user.getZ(),
+                net.minecraft.sound.SoundEvents.ENTITY_ENDER_PEARL_THROW,
+                net.minecraft.sound.SoundCategory.NEUTRAL,
+                0.5F,
+                0.4F / (world.getRandom().nextFloat() * 0.4F + 0.8F)
+        );
+
+        net.minecraft.entity.projectile.ProjectileEntity.spawnWithVelocity(
+                EnderPearlEntity::new,
+                serverWorld,
+                stack,
+                user,
+                0f,
+                power,
+                divergence
+        );
+
+        user.incrementStat(net.minecraft.stat.Stats.USED.getOrCreateStat((EnderPearlItem)(Object)this));
+        stack.decrementUnlessCreative(1, user);
+
+        cir.setReturnValue(ActionResult.SUCCESS);
+    }
+}

src/main/resources/tweaks.mixins.json

@@ -6,6 +6,7 @@
   "mixins": [
     "CreeperEntityMixin",
     "DontHurtMePearlMixin",
+    "EnderPearlItemMixin",
     "JustTeleportAlreadyMixin",
     "PlayerEntityMixin",
     "accessors.CreeperEntityAccessor"