public void Execute(ref OvertakerComponent overtaker, [ReadOnly] ref CarElementPositionComponent carElementPosition)
{
//TODO: Improve this
var carIndex = carElementPosition.Value;
var carElement = CarElements[carIndex];
// Car in front
var speed = CarBufferElement._2PI;
var distance = CarBufferElement._2PI;
for (int i = 1; i < CarElements.Length; i++)
{
var nextCar = CarElements[(carIndex + i) % CarElements.Length];
if (nextCar.Lane == carElement.Lane)
{
distance = CarBufferElement.Distance(carElement, nextCar);
speed = nextCar.Speed;
break;
}
}
overtaker.DistanceToCarInFront = distance;
overtaker.CarInFrontSpeed = speed;
// Car in right
speed = CarBufferElement._2PI;
distance = CarBufferElement._2PI;
var prevDistance = CarBufferElement._2PI;
if (carElement.Lane > 0)
{
for (int i = 1; i < CarElements.Length; i++)
{
var nextCar = CarElements[(carIndex + i) % CarElements.Length];
var prevCar = CarElements[(CarElements.Length + carIndex - i) % CarElements.Length];
if (prevCar.Lane == carElement.Lane - 1 && prevDistance >= CarBufferElement._2PI)
{
prevDistance = CarBufferElement.Distance(prevCar, carElement);
}
if (nextCar.Lane == carElement.Lane - 1)
{
distance = CarBufferElement.Distance(carElement, nextCar);
speed = nextCar.Speed;
break;
}
}
}
overtaker.DistanceToCarInRight = distance;
overtaker.DistanceToCarInRightBack = prevDistance;
overtaker.CarInRightSpeed = speed;
// Car in left
speed = CarBufferElement._2PI;
distance = CarBufferElement._2PI;
prevDistance = CarBufferElement._2PI;
if (carElement.Lane < 3)
{
for (int i = 1; i < CarElements.Length; i++)
{
var nextCar = CarElements[(carIndex + i) % CarElements.Length];
var prevCar = CarElements[(CarElements.Length + carIndex - i) % CarElements.Length];
if (prevCar.Lane == carElement.Lane + 1 && prevDistance >= CarBufferElement._2PI)
{
prevDistance = CarBufferElement.Distance(prevCar, carElement);
}
if (nextCar.Lane == carElement.Lane + 1)
{
distance = CarBufferElement.Distance(carElement, nextCar);
speed = nextCar.Speed;
break;
}
}
}
overtaker.DistanceToCarInLeft = distance;
overtaker.DistanceToCarInLeftBack = prevDistance;
overtaker.CarInLeftSpeed = speed;
}
public void Execute(ref PositionComponent position, ref SpeedComponent speed)
{
//position.Position.y=30;
position.Position.x = CarBufferElement.LoopPosition(position.Position.x + speed.CurrentSpeed * DeltaTime);
}
private void Start()
{
Entity prefab = GameObjectConversionUtility.ConvertGameObjectHierarchy(carPrefab, World.Active);
var entityManager = World.Active.EntityManager;
var carElementArray =
new NativeArray <CarBufferElement>(carAmount, Allocator.Temp, NativeArrayOptions.UninitializedMemory);
Unity.Mathematics.Random random = new Unity.Mathematics.Random();
float3 position = float3.zero;
float distance = (2 * math.PI) / carAmount;
float minRadius = highway.Radius;
float radius;
float angle = 0;
int lane;
float4 laneRadius = new float4(minRadius + landOffset, minRadius + landSize + landOffset, minRadius + (2 * landSize) + landOffset, minRadius + (3 * landSize) + landOffset);
for (int i = 0; i < carAmount; i++)
{
random.InitState((uint)((System.DateTime.Now.Ticks) * (i + 1)));
lane = random.NextInt(0, 4);
radius = laneRadius[lane];
var instance = entityManager.Instantiate(prefab);
position.x = radius * math.cos(angle);
position.z = radius * math.sin(angle);
entityManager.SetComponentData(instance, new Translation {
Value = position
});
entityManager.AddComponentData(instance, new PositionComponent {
Position = new float2(angle, radius)
});
float speed = random.NextFloat(rangeSpeed.x, rangeSpeed.y);
entityManager.AddComponentData(instance, new SpeedComponent {
CurrentSpeed = speed, DefaultSpeed = speed, OvertakeSpeed = speed + random.NextFloat(rangeOvertakeSpeed.x, rangeOvertakeSpeed.y), TargetSpeed = speed
});
entityManager.AddComponentData(instance, new CarElementPositionComponent()
{
Value = i
});
entityManager.AddComponentData(instance, new OvertakerComponent {
DistanceToCarInFront = float.MaxValue, CarInFrontSpeed = speed, OvertakeDistance = random.NextFloat(rangeOvertakeDistance.x, rangeOvertakeDistance.y), OvertakeEargerness = random.NextFloat(rangeOvertakeEargerness.x, rangeOvertakeEargerness.y)
});
entityManager.AddComponentData(instance, new LaneComponent {
Lane = lane
});
entityManager.AddComponentData(instance, new LaneChangeComponent {
LastRadius = lane, IsWantToOvertake = false
});
entityManager.AddComponentData(instance, new ColorComponent {
Value = 1
});
entityManager.AddComponentData(instance, new OvertakingComponent()
{
TimeLeft = 0
});
carElementArray[i] = new CarBufferElement()
{
Position = 0,
previousIndex = i,
newIndex = i
/*Entity = instance,
* NextInLane = -1,
* NextLeft = -1,
* NextRight = -1,
* PrevLane = -1,
* PrevLeft = -1,
* PrevRight = -1*/
};
angle += distance;
}
//create the race entity
var highwayEntity = entityManager.CreateEntity(typeof(HighWayComponent), typeof(CarBufferElement));
var raceQuery = entityManager.CreateEntityQuery(typeof(HighWayComponent));
raceQuery.SetSingleton(new HighWayComponent {
LaneRadius = laneRadius
});
var buffer = entityManager.GetBuffer <CarBufferElement>(highwayEntity);
buffer.AddRange(carElementArray);
}
