コード例 #1
0
        public Vector2 Update(Vehicle vehicle, GameTime gameTime)
        {
            _currentWanderAngle += RateOfChangeOfDirection * (float) (_random.NextDouble() * 2 - 1);

            _lastDirectionChangeTime = (int) gameTime.TotalGameTime.TotalSeconds;

            var circlePosition = Vector2.Normalize(vehicle.Velocity)*CircleDistance +vehicle.Position;
            var circleOffset = new Vector2((float)(CircleRadius * Math.Cos(_currentWanderAngle)),
                                           (float)(CircleRadius * Math.Sin(_currentWanderAngle)));
            var steeringDirection = (circlePosition+ circleOffset) - vehicle.Position;

            return steeringDirection;
        }
コード例 #2
0
        public Vector2 Update(Vehicle vehicle, GameTime gameTime)
        {
            // Todo:
                    // Add a value of between -RateOfChangeOfDirection and RateOfChangeOfDirection to the _currentWanderAngle variable.
                    //  Update the variable every  half second, so the changes in steering are more obvious

                    // Hint:
                    // You can use the _random variable that was passed in to the constructor to get a random value between -1 and 1.

                    // Todo:
                    // Figure out the circle position by taking the vehicles velocity (vehicle is a parameter passed into this method),
                    //  normalising it, multiplying by the circle distance, and finally adding the vehicles position.

                    // Todo:
                    // Calculate an offset on the steering circle based on the value in the _currentWanderAngle variable and the radius
                    //  of the circle, whose value is stored in CircleRadius.

                    // Todo:
                    // Return a steering direction that represents a vector from the vehicles position to the point on the steering cirle
                    //  you just calculated.

            return Vector2.Zero;
        }
コード例 #3
0
ファイル: Entity.cs プロジェクト: K3ith/IncompleteGameLabs
 public Entity(Game game, SpriteBatch spriteBatch, Vehicle vehicle)
     : base(game)
 {
     _spriteBatch = spriteBatch;
     _vehicle = vehicle;
 }