src/main/java/cofh/api/energy/IEnergyProvider.java

package cofh.api.energy;

import net.minecraft.util.EnumFacing;

/** Implement this interface on Tile Entities which should provide energy, generally storing it in one or more internal
 * {@link IEnergyStorage} objects.
 * <p>
 * A reference implementation is provided {@link TileEnergyHandler}.
 *
 * @author King Lemming */
public interface IEnergyProvider extends IEnergyConnection {

    /** Remove energy from an IEnergyProvider, internal distribution is left entirely to the IEnergyProvider.
     *
     * @param from Orientation the energy is extracted from.
     * @param maxExtract Maximum amount of energy to extract.
     * @param simulate If TRUE, the extraction will only be simulated.
     * @return Amount of energy that was (or would have been, if simulated) extracted. */
    int extractEnergy(EnumFacing from, int maxExtract, boolean simulate);

    /** Returns the amount of energy currently stored. */
    int getEnergyStored(EnumFacing from);

    /** Returns the maximum amount of energy that can be stored. */
    int getMaxEnergyStored(EnumFacing from);

}