/// <inheritdoc/>
/// <summary>
/// Stores valid actions, so that the agent can be penalized for
/// invalid ones, in case <see cref="m_MaskActions"/> is set to false.
/// </summary>
public override void WriteDiscreteActionMask(IDiscreteActionMask actionMask)
{
m_ValidActions.Clear();
m_ValidActions.Add(c_Stay);
for (int action = 1; action < 5; action++)
{
bool isValid = m_MazeBuffer.TryRead(Maze.Wall,
m_GridPosition + m_Directions[action],
out float value) && value == 0; // no wall
if (isValid)
{
m_ValidActions.Add(action);
}
else if (m_MaskActions)
{
actionMask.SetActionEnabled(0, action, false);
}
}
}
private bool HasWallAt(Vector3Int pos)
{
return(Buffer.TryRead(Wall, pos.x, pos.z, out float value) && value == 1);
}