if (sprite_index == spr_heart_yellow_ready)
{
    sprite_index = spr_heart_yellow_hold
    image_index = 0
    image_speed = 1
}
if (sprite_index == spr_heart_yellow_shoot)
{
    sprite_index = spr_heart_yellow_up
    image_index = 0
    image_speed = 0
}