// Public API
public Direction GetDirection(Tank tank)
{
// This is very dumb AI that moves around randomly
// And only shoots if there is something of interest in front of it
bool canGoForward = _frontSensor.GetObjectsInSensor().Count == 0;
bool canGoLeft = _leftSensor.GetObjectsInSensor().Count == 0;
bool canGoRight = _rightSensor.GetObjectsInSensor().Count == 0;
bool canGoBack = _backSensor.GetObjectsInSensor().Count == 0;
var localDirection = Direction.None;
// Favour going forward and only go back if we have no other choice
if (canGoForward)
{
localDirection = Direction.Up;
}
if ((canGoLeft || canGoRight) && (_secsSinceLastChangedDirection > 3f || !canGoForward))
{
bool goSidewards = Random.Range(0f, 1f) < 0.2f;
if (goSidewards)
{
var minBounds = canGoLeft ? -1f : 0f;
var maxBounds = canGoRight ? 1f : 0f;
var randomSideRoll = Random.Range(minBounds, maxBounds);
if (randomSideRoll > 0f)
{
localDirection = Direction.Right;
}
else
{
localDirection = Direction.Left;
}
_secsSinceLastChangedDirection = 0f;
}
}
if (canGoBack && localDirection == Direction.None)
{
localDirection = Direction.Down;
}
if (localDirection == Direction.None)
{
_direction = Direction.None;
}
else
{
_direction = DirectionHelper.LocalToWorld(tank.GetDirection(), localDirection);
}
return(_direction);
}
public bool HasAttemptedFired(Tank tank)
{
// Only fire if there is something in front of use of interest
var bulletSpawnPos = _bulletSpawnTransform.position;
var rayStart = new Vector2(bulletSpawnPos.x, bulletSpawnPos.y);
var direction = new Vector2();
switch (tank.GetDirection())
{
case Direction.Down: {
direction.x = 0f;
direction.y = -1f;
break;
}
case Direction.Up: {
direction.x = 0f;
direction.y = 1f;
break;
}
case Direction.Left: {
direction.x = -1f;
direction.y = 0f;
break;
}
case Direction.Right: {
direction.x = 1f;
direction.y = 0f;
break;
}
default: break;
}
var hits = Physics2D.RaycastAll(rayStart, direction);
for (int i = 0; i < hits.Length; ++i)
{
var hit = hits[i];
if (hit.transform.GetComponent <AiInterest>())
{
return(true);
}
}
return(false);
}
