void RemoveInfection()
{
if (stance == PlantStance.friendly)
{
// get neighbours
PlantBase[] neighbours = PlantManager.Get8NeighboursForPosition(gridPos);
for (int i = 0; i < neighbours.Length; i++)
{
// can't have null plants
if (neighbours [i] == null)
{
continue;
}
neighbours [i].ClearInfection();
}
}
}