Corail31
64 lines
2.5 KiB
Java
64 lines
2.5 KiB
Java
package electroblob.wizardry.item;
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import net.minecraft.entity.item.EntityItem;
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import net.minecraft.item.Item;
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import net.minecraft.item.ItemStack;
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import net.minecraft.nbt.NBTTagCompound;
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import net.minecraftforge.event.entity.item.ItemTossEvent;
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import net.minecraftforge.event.entity.living.LivingDropsEvent;
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import net.minecraftforge.fml.common.Mod;
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import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
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/**
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* Allows wizardry to identify items that are conjured (and therefore need destroying if they leave the inventory)
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* without explicitly referencing each, thereby allowing for better expandibility.
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*/
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@Mod.EventBusSubscriber
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public interface IConjuredItem {
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/** The NBT tag key used to store the duration multiplier for conjured items. */
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public static final String DURATION_MULTIPLIER_KEY = "durationMultiplier";
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/** Helper method for setting the duration multiplier (via NBT) for conjured items. */
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public static void setDurationMultiplier(ItemStack stack, float multiplier){
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if(!stack.hasTagCompound()) stack.setTagCompound(new NBTTagCompound());
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stack.getTagCompound().setFloat(DURATION_MULTIPLIER_KEY, multiplier);
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}
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/**
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* Helper method for returning the max damage of a conjured item based on its NBT data. Centralises the code.
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* Implementors will almost certainly want to call this from {@link Item#getMaxDamage(ItemStack stack)}.
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*/
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public default int getMaxDamageFromNBT(ItemStack stack){
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if(stack.hasTagCompound() && stack.getTagCompound().hasKey(DURATION_MULTIPLIER_KEY)){
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return (int)(this.getBaseDuration() * stack.getTagCompound().getFloat(DURATION_MULTIPLIER_KEY));
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}
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return this.getBaseDuration();
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}
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/**
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* Returns the base duration in ticks for this conjured item. Should be a constant (commonly 600). Implementors may
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* want to call this when setting an item's max damage in its constructor.
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*/
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public int getBaseDuration();
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@SubscribeEvent
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public static void onLivingDropsEvent(LivingDropsEvent event){
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// Destroys conjured items if their caster dies.
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for(EntityItem item : event.getDrops()){
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if(item.getItem().getItem() instanceof IConjuredItem){
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item.setDead();
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}
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}
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}
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@SubscribeEvent
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public static void onItemTossEvent(ItemTossEvent event){
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// Prevents conjured items being thrown by dragging and dropping outside the inventory.
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if(event.getEntityItem().getItem().getItem() instanceof IConjuredItem){
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event.setCanceled(true);
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event.getPlayer().inventory.addItemStackToInventory(event.getEntityItem().getItem());
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}
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}
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}
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