public uint GetScore(IEnumerable <GameObjectState> gameObjects,
GameObjectExtended self,
byte currentLane)
{
return(_priority
+ GetDistanceScore(currentLane)
+ GetTrafficScore(gameObjects, self)
+ GetVelocityScore());
}
private uint GetTrafficScore(IEnumerable <GameObjectState> gameObjects,
GameObjectExtended self)
{
var closestObject = GetClosestObjectInFront(gameObjects, self);
if (closestObject == null)
{
return(0);
}
var closest = new GameObjectExtended(closestObject);
var score = Math.Min(500, Math.Exp(self.GetDistance(closest) - 50)); // get exp
score = Math.Max(0, 500 - score); // reverse
//score = score / 10;
return((uint)score);
}
public PlayerAction Update(GameState gameState)
{
/* TODO:
* always overtake roadblocks
*/
float accelerationY = 1;
bool left = false, right = false;
var selfObject = gameState
.GameObjectStates
.Single(o => o.Id == _playerId);
var self = new GameObjectExtended(selfObject);
var allObstacleObjects = gameState
.GameObjectStates
.Where(g => g.GameObjectType == GameObjectType.Car ||
g.GameObjectType == GameObjectType.Roadblock ||
g.GameObjectType == GameObjectType.Pedestrian ||
g.GameObjectType == GameObjectType.BusStop)
.ToList();
//var nearbyLanes = _lanes
// .Where(lane => Math.Abs(_currentLaneId - lane.Id) <= 1);
var laneScores = _lanes
.Select(lane => new
{
Key = lane.Id,
Value = lane.GetScore(allObstacleObjects, self, _currentLaneId)
})
.ToList();
var bestLaneScore = laneScores.Min(l => l.Value);
var bestLaneId = laneScores.First(l => l.Value == bestLaneScore).Key;
Debug.Write($"{bestLaneId} ");
Debug.Write($"{_lanes[0].GetScore(allObstacleObjects, self, _currentLaneId)} ");
Debug.Write($"{_lanes[1].GetScore(allObstacleObjects, self, _currentLaneId)} ");
Debug.Write($"{_lanes[2].GetScore(allObstacleObjects, self, _currentLaneId)} ");
Debug.Write($"{_lanes[3].GetScore(allObstacleObjects, self, _currentLaneId)} ");
Debug.WriteLine("");
if (!_isChangingLanes && bestLaneId != _currentLaneId)
{
_isChangingLanes = true;
_currentLaneId = bestLaneId;
}
var desiredX = (_currentLaneId * 3) - _laneOffset + GameConstants.LaneWidth / 2;
//var otherInFront = _lanes[_currentLaneId].GetClosestObjectInFront(allObstacleObjects, self);
//if (otherInFront != null)
//{
// var otherSpeed = obstacleInFront.VY;
// var otherDistanceToStop = CalculateDistanceToStop(otherSpeed, obstacleInFront.MaximumDeceleration);
// var selfDistanceToStop = CalculateDistanceToStop(self.VY, self.MaximumDeceleration);
// var selfCenterY = (self.BoundingBox.Top + self.BoundingBox.Bottom) / 2;
// var otherCenterY = (obstacleInFront.BoundingBox.Top + obstacleInFront.BoundingBox.Bottom) / 2;
// var distanceBetweenCars = Math.Abs(selfCenterY - otherCenterY) - self.BoundingBox.Height / 2 -
// obstacleInFront.BoundingBox.Height / 2;
// const float plusSafeDistance = 1;
//foreach (var lane in _lanePriority)
//{
// var dist = obstaclesInFront[lane].GetDistance(self);
// if (dist > 50)
// {
// _currentLaneId = lane;
// break;
// }
//}
//if (otherInFront.GetDistance(self) < self.DistanceToStop - otherInFront.DistanceToStop + plusSafeDistance &&
// self.VY > 0)
//{
// accelerationY = -1;
//}
//}
var centerX = (self.BoundingBox.Left + self.BoundingBox.Right) / 2;
if (Math.Abs(desiredX - centerX) > 0.2)
{
if (desiredX < centerX)
{
left = true;
}
else
{
right = true;
}
}
else
{
_isChangingLanes = false;
}
return(new PlayerAction()
{
MoveLeft = left,
MoveRight = right,
Acceleration = accelerationY
});
}
public float GetDistance(GameObjectExtended other)
{
var distanceBetweenCenters = Math.Abs(CenterY - other.CenterY);
return(distanceBetweenCenters - EdgeOffsetY - other.EdgeOffsetY);
}