public TransformState CalculateTransformAtTime(float time, GameContext context)
{
var timeDiff = context.State.Time - context.State.PrevTime;
if (Mathf.Approximately(timeDiff, 0f))
{
return(this.Transform.Clone());
}
var t = (time - context.State.PrevTime) / timeDiff;
return(TransformState.Lerp(this.prevTransform, this.Transform, t));
}
private void Update()
{
float time = Time;
float dt = UnityEngine.Time.deltaTime;
_spawnTimer -= dt;
_updateTimer -= dt;
int spawnCount = 1;
while (_spawnTimer < 0)
{
var newInstance = new Instance()
{
Mesh = Meshes.Random(),
Material = Materials.Random(),
SpawnTime = _lastSpawnTime + SpawnTime * spawnCount,
CurrentState = new TransformState(Vector3.back * 100, Vector3.zero, Vector3.one),
TargetState = new TransformState(Vector3.back * 100, Vector3.zero, Vector3.one),
Color = ColorManager == null ? Color.white : ColorManager.GetTemplateAtTime(ColorOffset).GetByIndex(ColorIndex),
};
_instances.Add(newInstance);
_spawnTimer += SpawnTime;
_lastSpawnTime = time;
spawnCount++;
}
// Rebuild poly points if needed
if (_polygonPoints.Count != Sides)
{
_polygonPoints.Clear();
for (var i = 0; i < Sides; ++i)
{
var tPi = (i / (float)(Sides - 1)) * Mathf.PI * 2;
_polygonPoints.Add(new Vector2(Mathf.Sin(tPi), Mathf.Cos(tPi)));
}
}
for (int i = _instances.Count - 1; i >= 0; --i)
{
var instance = _instances[i];
if (time - instance.SpawnTime > TotalTime)
{
_instances.RemoveAt(i);
continue;
}
if (_updateTimer < 0)
{
instance.TargetState = GetTransformState(time - instance.SpawnTime);
}
instance.CurrentState = TransformState.Lerp(instance.CurrentState, instance.TargetState, TransitionSpeed);
if (_materialPropertyBlock == null)
{
_materialPropertyBlock = new MaterialPropertyBlock();
}
_materialPropertyBlock.Clear();
_materialPropertyBlock.SetColor("_Color", instance.Color);
Graphics.DrawMesh(instance.Mesh, transform.localToWorldMatrix * instance.CurrentState.ToMatrix(), instance.Material, 0, null, 0, _materialPropertyBlock);
}
if (_updateTimer < 0)
{
_updateTimer = UpdateTime;
}
}