    001    package net.minecraftforge.common;
    002
    003    import net.minecraft.util.AxisAlignedBB;
    004    import net.minecraft.entity.Entity;
    005    import net.minecraft.entity.item.EntityMinecart;
    006
    007    /**
    008     * This class defines a replacement for the default minecart collision code.
    009     * Only one handler can be registered at a time. It it registered with EntityMinecart.registerCollisionHandler().
    010     * If you use this, make it a configuration option.
    011     * @author CovertJaguar
    012     */
    013    public interface IMinecartCollisionHandler
    014    {
    015
    016        /**
    017         * This basically replaces the function of the same name in EnityMinecart.
    018         * Code in IMinecartHooks.applyEntityCollisionHook is still run.
    019         * @param cart The cart that called the collision.
    020         * @param other The object it collided with.
    021         */
    022        public void onEntityCollision(EntityMinecart cart, Entity other);
    023
    024        /**
    025         * This function replaced the function of the same name in EntityMinecart.
    026         * It is used to define whether minecarts collide with specific entities,
    027         * for example items.
    028         * @param cart The cart for which the collision box was requested.
    029         * @param other The entity requesting the collision box.
    030         * @return The collision box or null.
    031         */
    032        public AxisAlignedBB getCollisionBox(EntityMinecart cart, Entity other);
    033
    034        /**
    035         * This function is used to define the box used for detecting minecart collisions.
    036         * It is generally bigger that the normal collision box.
    037         * @param cart The cart for which the collision box was requested.
    038         * @return The collision box, cannot be null.
    039         */
    040        public AxisAlignedBB getMinecartCollisionBox(EntityMinecart cart);
    041
    042        /**
    043         * This function replaces the function of the same name in EntityMinecart.
    044         * It defines whether minecarts are solid to the player.
    045         * @param cart The cart for which the bounding box was requested.
    046         * @return The bounding box or null.
    047         */
    048        public AxisAlignedBB getBoundingBox(EntityMinecart cart);
    049    }
    050