Unicopia/src/main/java/com/minelittlepony/unicopia/item/ICastable.java

package com.minelittlepony.unicopia.item;

import com.minelittlepony.unicopia.entity.EntitySpell;
import com.minelittlepony.unicopia.spell.IDispenceable;
import com.minelittlepony.unicopia.spell.IMagicEffect;
import com.minelittlepony.unicopia.spell.SpellCastResult;

import net.minecraft.dispenser.IBlockSource;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.ItemStack;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;

public interface ICastable extends IMagicalItem {

    SpellCastResult onDispenseSpell(IBlockSource source, ItemStack stack, IDispenceable effect);

    SpellCastResult onCastSpell(EntityPlayer player, World world, BlockPos pos, ItemStack stack, IMagicEffect effect, EnumFacing side, float hitX, float hitY, float hitZ);

    boolean canFeed(EntitySpell spell, ItemStack stack);

    /**
     * Called to cast a spell. The result is an entity spawned with the spell attached.
     */
    default EntitySpell castContainedSpell(World world, BlockPos pos, ItemStack stack, IMagicEffect effect) {
        EntitySpell spell = new EntitySpell(world);

        spell.setAffinity(getAffinity(stack));
        spell.setLocationAndAngles(pos.getX() + 0.5, pos.getY() + 0.5, pos.getZ() + 0.5, 0, 0);
        spell.setEffect(effect);

        world.spawnEntity(spell);

        return spell;
    }
}