// Update is called once per frame
void Update()
{
if (tankForThis == null)
{
foreach (TankObject t in EnemyTank.enemies)
{
if (t.GetGameObject().Equals(gameObject))
{
tankForThis = t;
break;
}
}
}
if (tankForThis != null)
{
if (tankForThis.Shoot())//ako nije pucao, onda radi movement
{
Shoot();
}
else
{
tankForThis.UpdateMovement();
}
}
}
//Accessors
//Methods
override public void Update(TankObject tank, ref WorldItems world)
{
List <TankObject> nearbyTanks = new List <TankObject>();
//Add each Tank to list only if they are in a square around "tank"
foreach (GameObject entry in world.allObjects)
{
TankObject tankEntry = entry as TankObject;
if (tankEntry != null)
{
if ((Math.Abs(tankEntry.Position.x - tank.Position.x) <= MAX_AGGRO_RANGE) && (Math.Abs(tankEntry.Position.y - tank.Position.y) <= MAX_AGGRO_RANGE))
{
nearbyTanks.Add(tankEntry);
}
}
}
if ((Math.Abs(world.player.Position.x - tank.Position.x) <= MAX_AGGRO_RANGE) && (Math.Abs(world.player.Position.y - tank.Position.y) <= MAX_AGGRO_RANGE))
{
nearbyTanks.Add(world.player);
}
if (targetTank == null)
{
//Look for new targetTank
targetTank = SearchForNewTargetTank(tank, nearbyTanks);
if (targetTank != null)
{
angleFromTarget = Math.PI * Helper.random.NextDouble(); //returns number between 0 and 2 * PI
}
}
else if (Helper.Distance(tank.Position, targetTank.Position) > MAX_TARGET_RANGE)
{
//Look for new targetTank and change to it. It might decide to keep same target.
targetTank = SearchForNewTargetTank(tank, nearbyTanks);
}//If current Target distance < MAX_TARGET_RANGE, then target doesn't change at all
//Update CannonTarget position of "tank"
if (targetTank != null)
{
tank.CannonTarget = targetTank.Position;
tank.UpdateCannonDirection();
//Try to shoot target if it is in the shooting range
if (Helper.Distance(tank.Position, targetTank.Position) <= MAX_SHOOTING_RANGE)
{
double random = Helper.random.NextDouble();
if (random >= 1 - SHOOTING_PROBABILITY)
{
tank.Shoot();
}
}
}
else //if tank has no target, cannon should aim in the direction of the tank!
{
tank.CannonTarget = tank.Position;
}
if (targetTank != null)
{
//UpdateTargetSpeedvektor();
angleFromTarget += Math.PI / 1000.0;
angleFromTarget = Helper.NormalizeRad(angleFromTarget);
Coordinate targetPosition;
targetPosition.x = targetTank.Position.x + MAX_SHOOTING_RANGE * 0.9 * Math.Cos(angleFromTarget);
targetPosition.y = targetTank.Position.y + MAX_SHOOTING_RANGE * 0.9 * Math.Sin(angleFromTarget);
double angleToTargetPosition;
Coordinate delta;
delta.x = targetPosition.x - tank.Position.x;
delta.y = targetPosition.y - tank.Position.y;
if (delta.x == 0 && delta.y == 0) //Just in case targetposition = current tank position
{
angleToTargetPosition = tank.DirectionBody;
}
else
{
angleToTargetPosition = Math.Atan2(delta.y, delta.x);
}
targetSpeedVektor.x = tank.GetTopSpeed() * Math.Cos(angleToTargetPosition);
targetSpeedVektor.y = tank.GetTopSpeed() * Math.Sin(angleToTargetPosition);
}
else
{
targetSpeedVektor.x = 0;
targetSpeedVektor.y = 0;
}
if (targetSpeedVektor.x == 0 && targetSpeedVektor.y == 0)
{
tank.TurnLeft(0);
tank.TurnRight(0);
tank.Reverse(0);
tank.Forward(0);
}
else
{
//DriveTank();
double turnDirection = tank.DirectionBody - Math.Atan2(targetSpeedVektor.y, targetSpeedVektor.x);
//Bring turn direction back to between -Pi and +Pi
if (turnDirection < -Math.PI)
{
turnDirection += 2 * Math.PI;
}
else if ((turnDirection > Math.PI))
{
turnDirection -= 2 * Math.PI;
}
if (turnDirection == 0)
{//tank is already on the right trajectory
/*Keep moving Forward*/
tank.TurnLeft(0);
tank.TurnRight(0);
tank.Reverse(0);
tank.Forward(ACCELERATION_RATE);
}
else if (turnDirection == Math.PI || turnDirection == -Math.PI)
{//targetvektor is 180degres behind tank
tank.TurnLeft(0);
tank.TurnRight(0);
tank.Reverse(ACCELERATION_RATE);
tank.Forward(0);
}
else if (turnDirection > 0)
{//if positive, turn left
tank.TurnLeft(1);
tank.TurnRight(0);
tank.Reverse(0);
tank.Forward(ACCELERATION_RATE);
}
else if (turnDirection < 0)
{//if negative, turn right
tank.TurnLeft(0);
tank.TurnRight(1);
tank.Reverse(0);
tank.Forward(ACCELERATION_RATE);
}
}
}