86 lines
4.0 KiB
Markdown
86 lines
4.0 KiB
Markdown
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```
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title = "Crafting/Smelting Recipes"
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date = "2016-06-30 10:49:00 -0400"
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```
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## Setup
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Before we implement any recipes, we'll create a little class in which we'll register all of our recipes. We'll call this class `ModRecipes`, following the same convention as our `ModItems` and `ModBlocks` classes. We'll put this into the `recipe` package inside our main package so once when we implement more complex custom recipes, we'll have a place to group them together.
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You'll want an empty `init` static method in `ModRecipes` which is where we'll register our recipes in just a moment.
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```java
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package net.shadowfacts.tutorial.recipe;
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public class ModRecipes {
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public static void init() {
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}
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}
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```
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The `ModRecipes.init` method should be called from `TutorialMod#init`. The init method is called during the initialization phase which occurs after the pre-initialization phase. We want to register our recipes here instead of in the pre-init or post-init phases because all mod items/blocks (including those from other mods) should be registered at this point.
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```java
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// ...
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public class TutorialMod {
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// ...
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@Mod.EventHandler
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public void init(FMLInitializationEvent event) {
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ModRecipes.init();
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}
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// ...
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}
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```
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## Crafting Recipes
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There are two kinds of crafting recipes: shaped recipes and shapeless recipes.
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In a shapeless recipe, the ingredients can be placed in any arrangement on the crafting grid. An example of a shapeless recipe is the [Pumpkin Pie recipe](https://minecraft.gamepedia.com/Pumpkin_Pie#Crafting).
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Shaped recipes require their ingredients to be placed in a specific arrangement. An example of a shaped recipe is the [Cake recipe](https://minecraft.gamepedia.com/Cake#Crafting).
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## Shapeless Recipe
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Our shapeless recipe is going to be a simple recipe that lets people craft 1 corn into 1 corn seed. All this requires is 1 line in `ModRecipes`.
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```java
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public static void init() {
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GameRegistry.addShapelessRecipe(new ItemStack(ModItems.cornSeed), ModItems.corn);
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}
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```
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`GameRegistry.addShapelessRecipe` does exactly as the name says, it registers a shapeless recipe. The first argument is an `ItemStack` that is the output of the recipe, in this case a corn seed. The second argument is a varargs array of `Object`s that can be `Item`s, `Block`s, or `ItemStack`s.
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## Shaped Recipe
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Our shaped recipe is going to be an additional recipe for Rabbit Stew that accepts corn instead of carrots. This requires a call to `GameRegistry.addShapedRecipe` which, you guessed it, registers a shaped recipe.
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```java
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public static void init() {
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// ...
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GameRegistry.addShapedRecipe(new ItemStack(Items.RABBIT_STEW), " R ", "CPM", " B ", 'R', Items.COOKED_RABBIT, 'C', ModItems.corn, 'P', Items.BAKED_POTATO, 'M', Blocks.BROWN_MUSHROOM, 'B', Items.BOWL);
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}
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```
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The first argument to `GameRegistry.addShapedRecipe` is an `ItemStack` that is the output of the recipe. The next arguments should be anywhere from 1 to 3 `String` arguments that determine the pattern of the recipe. A space in a pattern string represents an empty slot and each character represents an item/block/stack specified by the following arguments. The remaining arguments should be pairs of characters and `Item`/`Block`/`ItemStack`. The character should be the same (including case) as used in the pattern strings. The item/block/stack should be what is used for the instances of that character in the pattern.
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Our finished recipe looks like this:
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## Smelting Recipe
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Our furnace recipe is going to be a simple 1 Copper Ore to 1 Copper Ingot recipe. All this requires is 1 call to `GameRegistry.addSmelting`
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```java
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public static void init() {
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// ...
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GameRegistry.addSmelting(ModBlocks.oreCopper, new ItemStack(ModItems.ingotCopper), 0.7f);
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}
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```
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`GameRegistry.addSmelting` takes 3 parameters, the item/block/stack input, the `ItemStack` output, and the amount of experience to be given to the player (per smelt).
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