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tutorial:enchantments

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tutorial:enchantments [2019/12/26 22:10] – Fix class name modmuss50tutorial:enchantments [2024/08/23 13:52] (current) – [Adding Translations] solidblock
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-===== Adding Enchantments =====+====== Adding Enchantments ====== 
 + 
 +===== Adding enchantments since 1.21 ===== 
 +Since 1.21, enchantments has been data-driven, which means you should define them in data-packs, instead of in the codes. Please see [[https://minecraft.wiki/w/Enchantment_definition|Enchantment definition Minecraft page]] for details. 
 + 
 +To use the enchantments in code, you should just store ''RegistryKey'' objects of the enchantment. 
 +<code java TutorialEnchantments> 
 +public final class TutorialEnchantments { 
 +  public static final RegistryKey<Enchantment> FROST = of("frost"); 
 + 
 +  private static RegistryKey<Enchantment> of(String name) { 
 +    return RegistryKey.of(RegistryKeys.ENCHANTMENT, Identifier.of("tutorial", name)); 
 +  } 
 + 
 +  public static void initialize() { 
 +  } 
 +} 
 +</code> 
 + 
 +Remember to refer to the ''initialize'' method in your ''ModInitializer'': 
 +<code java ExampleMod> 
 +public class ExampleMod implements ModInitializer { 
 +  // [...] 
 + 
 +  @Override 
 +  public void onInitialize() { 
 +    // [...] 
 +    TutorialEnchantments.initialize(); 
 +  } 
 +} 
 +</code> 
 + 
 +To add a translated name for your enchantment, see the bottom of the tutorial. 
 + 
 +===== Adding enchantments before 1.21 ===== 
 +:!: This part of the tutorial only applies to older Minecraft versions.
  
 To add enchantments to your mod, you'll need to: To add enchantments to your mod, you'll need to:
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 ==== Creating Enchantment Class ==== ==== Creating Enchantment Class ====
-We'll be creating an enchantment called //Frost//, which slows mobs. The slowness effect durability & potency will grow relative to the level of the enchantment.+Our new enchantment is called //Frost// and slows mobs on hit. The slowness effect, durability, and potency will grow relative to the level of the enchantment. In our enchantment class, we pass up ''UNCOMMON'' as the enchantment rarity, ''WEAPON'' as the enchantment target, and ''MAINHAND'' as the only valid tool type for our enchantment.
 <code java [enable_line_numbers="true"]> <code java [enable_line_numbers="true"]>
-public class FrostEnchantment extends Enchantment  +public class FrostEnchantment extends Enchantment { 
-{ +    public FrostEnchantment() { 
-    public FrostEnchantment(Weight weight, EnchantmentTarget target, EquipmentSlot[] slots) +        super(Enchantment.Rarity.UNCOMMON, EnchantmentTarget.WEAPON, new EquipmentSlot[] {EquipmentSlot.MAINHAND});
-    { +
-        super(weight, target, slots)+
     }     }
 } }
 </code> </code>
  
-You'll have to override a few basic methods for basic functionality:+We will now override a few basic methods for basic functionality:
  
-''getMinimumPower'' is the minimum level required to get the enchant in an enchanting table. We'll set it to 1, so you can get it at any level:+''getMinPower'' is related to the minimum level needed to see the enchant in a table, but it is not a 1:1 ratio. Most enchantments return something like ''10 * level'', with different scales depending on the max level and rarity of the enchantment. We will return 1 so it is always available. Note that the max power of an enchantment is set to ''min(level) + 5'' by default, which means this enchantment will only appear at very low levels. You will have to tweak your enchantment properties on your own and look at similar enchantment values to find the sweet number spot.
 <code java [enable_line_numbers="false"]> <code java [enable_line_numbers="false"]>
 @Override @Override
-public int getMinimumPower(int int_1) +public int getMinPower(int level) {
-{+
     return 1;     return 1;
 } }
 </code> </code>
  
-''getMaximumLevel'' is the number of tiers the enchantment has. ((Enchantments with more than a single tier will have roman numerals after the name to show the level. If the enchantment only has a single level, nothing is added.))+''getMaxLevel'' is the number of levels the enchantment has. Sharpness has a max level of 5. ((Enchantments with more than a single level will have roman numerals after the name to show the level. If the enchantment only has a single level, nothing is added.))
 <code java [enable_line_numbers="false"]> <code java [enable_line_numbers="false"]>
 @Override @Override
-public int getMaximumLevel() +public int getMaxLevel() {
-{+
     return 3;     return 3;
 } }
 </code> </code>
  
-Finally, we'll implement our slowness effect in the ''onTargetDamage'' method, which is called when you whack an enemy with a tool that has your enchantment.+Finally, we will implement our slowness effect in the ''onTargetDamage'' method, which is called when you whack an enemy with a tool that has your enchantment.
 <code java [enable_line_numbers="false"]> <code java [enable_line_numbers="false"]>
 @Override @Override
-public void onTargetDamaged(LivingEntity user, Entity target, int level) +public void onTargetDamaged(LivingEntity user, Entity target, int level) { 
-{ +    if(target instanceof LivingEntity livingEntity) { 
-    if(target instanceof LivingEntity) +        livingEntity.addStatusEffect(new StatusEffectInstance(StatusEffects.SLOWNESS, 20 * 2 * level, level - 1));
-    { +
-        ((LivingEntity) target).addPotionEffect(new StatusEffectInstance(StatusEffects.SLOWNESS, 20 * 2 * level, level - 1));+
     }     }
  
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 } }
 </code> </code>
-Pretty simple logic: if the entity we're hitting can have status effects, give it slowness. The time is 2 seconds per level, and the potency is equivalent to the level.+If the entity we are hitting can have status effects (''LivingEntity''s can have status effects, but not ''Entity''), give it the slowness effect. The duration of the effect is 2 seconds per level, and the potency is equivalent to the level. 
 + 
 +The final enchantment file should look like this. 
 +<code java [enable_line_numbers="true"]> 
 +public class FrostEnchantment extends Enchantment { 
 +    public FrostEnchantment() { 
 +        super(Enchantment.Rarity.UNCOMMON, EnchantmentTarget.WEAPON, new EquipmentSlot[] {EquipmentSlot.MAINHAND}); 
 +    } 
 +     
 +    @Override 
 +    public int getMinPower(int level) { 
 +        return 1; 
 +    } 
 + 
 +    @Override 
 +    public int getMaxLevel() { 
 +        return 3; 
 +    } 
 + 
 +    public void onTargetDamaged(LivingEntity user, Entity target, int level) { 
 +        if(target instanceof LivingEntity) { 
 +            ((LivingEntity) target).addStatusEffect(new StatusEffectInstance(StatusEffects.SLOWNESS, 20 * 2 * level, level - 1)); 
 +        } 
 + 
 +        super.onTargetDamaged(user, target, level); 
 +    } 
 +} 
 +</code>
  
 ==== Registering Enchantment ==== ==== Registering Enchantment ====
 Registering enchantments follows the same process as usual: Registering enchantments follows the same process as usual:
 <code java [enable_line_numbers="false"]> <code java [enable_line_numbers="false"]>
-private static Enchantment FROST;+public class ExampleMod implements ModInitializer { 
 +    public static Enchantment FROST = new FrostEnchantment();
  
-@Override +    @Override 
-public void onInitialize() +    public void onInitialize() { 
-{ +        Registry.register(Registries.ENCHANTMENT, new Identifier("tutorial", "frost"), FROST); 
-    FROST = Registry.register( +    }
-        Registry.ENCHANTMENT, +
- new Identifier("tutorial", "frost"), +
- new FrostEnchantment( +
-     Enchantment.Weight.VERY_RARE, +
-     EnchantmentTarget.WEAPON, +
-     new EquipmentSlot[] { +
- EquipmentSlot.MAINHAND +
-     } +
- ) +
-    );+
 } }
 </code> </code>
 +> **Note:** In practice, if you have many enchantments, it is better to place them in a separate class. Here we did all things in ''ModInitializer'' for simplicity.
 +
 +This registers our enchantment under the namespace ''tutorial:frost''. All non-treasure enchantments are available in an enchanting table, including the ones you register.
  
-This registers our enchantment under the namespace ''tutorial:frost'', sets it as a very rare enchantment, and only allows it on main hand tools.+===== Adding Translations ===== 
 +=) This part works both versions since 1.21 and before 1.21.
  
-==== Adding Translations & Testing ==== 
 You'll need to add a translation to your enchantment as well. Head over to your [[tutorial:lang|mod lang file]] and add a new entry: You'll need to add a translation to your enchantment as well. Head over to your [[tutorial:lang|mod lang file]] and add a new entry:
  
-<code json [enable_line_numbers="false"]>+<code javascript resources/data/tutorial/lang/en_us.json>
 { {
     "enchantment.tutorial.frost": "Frost"     "enchantment.tutorial.frost": "Frost"
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 If you go in-game, [[https://i.imgur.com/31nFl2H.png|you should be able to enchant main hand weapons with your new enchant.]] If you go in-game, [[https://i.imgur.com/31nFl2H.png|you should be able to enchant main hand weapons with your new enchant.]]
- 
  
  
  
  
tutorial/enchantments.1577398237.txt.gz · Last modified: 2019/12/26 22:10 by modmuss50