if (!instance_exists(obj_heart_battle_fighting_parent))
{
    instance_destroy()
    return;
}
x = xstart
y = ystart
x += irandom_range(-2, 2)
y += irandom_range(-2, 2)
obj_heart_battle_fighting_parent.x = x
obj_heart_battle_fighting_parent.y = y
image_index = obj_heart_battle_fighting_parent.image_index