Mekanism-tilera-Edition/common/mekanism/api/ItemRetriever.java

71 lines
2.3 KiB
Java

package mekanism.api;
import net.minecraft.block.Block;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
/**
* Use this class's 'getItem()' method to retrieve ItemStacks from the 'Mekanism'
* class.
* @author AidanBrady
*
*/
public final class ItemRetriever
{
/** The 'Mekanism' class that items and blocks are retrieved from. */
private static Class Mekanism;
/**
* Attempts to retrieve an ItemStack of an item or block with the declared identifier.
*
* Mekanism identifiers follow an easy-to-remember pattern. All identifiers
* are identical to the String returned by 'getItemName().' None include spaces,
* and all start with a capital letter. The name that shows up in-game can be
* stripped down to identifier form by removing spaces and all non-alphabetic
* characters (,./'=-_). Below is an example:
*
* ItemStack enrichedAlloy = ItemRetriever.getItem("EnrichedAlloy");
*
* The same also works for blocks.
*
* ItemStack refinedObsidian = ItemRetriever.getItem("RefinedObsidian");
*
* Note that for items or blocks that have specific metadata you will need to create
* a new ItemStack with that specified value, as this will only return an ItemStack
* with the meta value '0.'
*
* Make sure you run this in or after FMLPostInitializationEvent runs, because most
* items are registered when FMLInitializationEvent runs. However, some items ARE
* registered later in order to hook into other mods. In a rare circumstance you may
* have to add "after:Mekanism" in the @Mod 'dependencies' annotation.
*
* @param identifier - a String to be searched in the 'Mekanism' class
* @return an ItemStack of the declared identifier, otherwise null.
*/
public static ItemStack getItem(String identifier)
{
try {
if(Mekanism == null)
{
Mekanism = Class.forName("mekanism.common.Mekanism");
}
Object ret = Mekanism.getField(identifier).get(null);
if(ret instanceof Item)
{
return new ItemStack((Item)ret, 1);
}
else if(ret instanceof Block)
{
return new ItemStack((Block)ret, 1);
}
else {
return null;
}
} catch(Exception e) {
System.err.println("[Mekanism] Error retrieving item with identifier '" + identifier + "': " + e.getMessage());
return null;
}
}
}