Method onLanded

src/main/java/net/minecraft/block/Block.java:1139–1142

Called when an Entity lands on this Block. This method must update motionY because the entity will not do that on its own

(World worldIn, Entity entityIn)

     * on its own
     */
    public void onLanded(World worldIn, Entity entityIn)
    {
        entityIn.motionY = 0.0D;
    }

    /**
     * Used by pick block on the client to get a block's item form, if it exists.