protected override void OnUpdate()
{
Entities.ForEach((Entity entity, ref Translation translation, ref Rotation rotation, ref ProjectileData projectileData) =>
{
// Update position:
float3 forwardVector = math.mul(rotation.Value, new float3(0, -1, 0));
translation.Value += forwardVector * projectileData.SpeedMultiplier * Time.deltaTime;
// Update life time:
projectileData.LifeTime += Time.deltaTime;
if (projectileData.LifeTime >= projectileData.MaxLifeTime)
{
PostUpdateCommands.DestroyEntity(entity);
return;
}
// Destroy if collided with asteroid and update the score (use more quadrant cells for better collision precision):
int hashMapKey = QuadrantSystem.GetQuadrantHashMapKey(translation.Value);
QuadrantSystem.QuadrantEntityData[] quadrantData = new QuadrantSystem.QuadrantEntityData[9];
bool[] isCollision = new bool[9];
isCollision[0] = AsteroidsSystem.IsCollisionWithAsteroid(hashMapKey, entity, entity.Index, translation, QuadrantSystem.QuadrantAsteroidsMultiHashMap, out quadrantData[0]);
isCollision[1] = AsteroidsSystem.IsCollisionWithAsteroid(hashMapKey + 1, entity, entity.Index, translation, QuadrantSystem.QuadrantAsteroidsMultiHashMap, out quadrantData[1]);
isCollision[2] = AsteroidsSystem.IsCollisionWithAsteroid(hashMapKey - 1, entity, entity.Index, translation, QuadrantSystem.QuadrantAsteroidsMultiHashMap, out quadrantData[2]);
isCollision[3] = AsteroidsSystem.IsCollisionWithAsteroid(hashMapKey + QuadrantSystem.QuadrantYMultiplier, entity, entity.Index, translation, QuadrantSystem.QuadrantAsteroidsMultiHashMap, out quadrantData[3]);
isCollision[4] = AsteroidsSystem.IsCollisionWithAsteroid(hashMapKey - QuadrantSystem.QuadrantYMultiplier, entity, entity.Index, translation, QuadrantSystem.QuadrantAsteroidsMultiHashMap, out quadrantData[4]);
isCollision[5] = AsteroidsSystem.IsCollisionWithAsteroid(hashMapKey + 1 + QuadrantSystem.QuadrantYMultiplier, entity, entity.Index, translation, QuadrantSystem.QuadrantAsteroidsMultiHashMap, out quadrantData[5]);
isCollision[6] = AsteroidsSystem.IsCollisionWithAsteroid(hashMapKey - 1 + QuadrantSystem.QuadrantYMultiplier, entity, entity.Index, translation, QuadrantSystem.QuadrantAsteroidsMultiHashMap, out quadrantData[6]);
isCollision[7] = AsteroidsSystem.IsCollisionWithAsteroid(hashMapKey + 1 - QuadrantSystem.QuadrantYMultiplier, entity, entity.Index, translation, QuadrantSystem.QuadrantAsteroidsMultiHashMap, out quadrantData[7]);
isCollision[8] = AsteroidsSystem.IsCollisionWithAsteroid(hashMapKey - 1 - QuadrantSystem.QuadrantYMultiplier, entity, entity.Index, translation, QuadrantSystem.QuadrantAsteroidsMultiHashMap, out quadrantData[8]);
for (int i = 0; i < isCollision.Length; i++)
{
if (isCollision[i])
{
if (entity != Entity.Null)
{
PostUpdateCommands.DestroyEntity(entity);
}
if (quadrantData[i].entity != Entity.Null)
{
PostUpdateCommands.DestroyEntity(quadrantData[i].entity);
}
ShipSystem.Score++;
UI.UpdateScore(ShipSystem.Score);
break;
}
}
});
}
public static bool IsCollisionWithAsteroid(int hashMapKey, Entity entity, int index, Translation translation, NativeMultiHashMap <int, QuadrantSystem.QuadrantEntityData> quadrantMultiHashMap, out QuadrantSystem.QuadrantEntityData quadrantData)
{
NativeMultiHashMapIterator <int> nativeMultiHashMapIterator;
if (quadrantMultiHashMap.TryGetFirstValue(hashMapKey, out quadrantData, out nativeMultiHashMapIterator))
{
do
{
if (!entity.Equals(quadrantData.entity) && math.distance(translation.Value, quadrantData.position) < 0.25f)
{
return(true);
}
} while(quadrantMultiHashMap.TryGetNextValue(out quadrantData, ref nativeMultiHashMapIterator));
}
return(false);
}