// Configure a new sprite item data object properties, (could be new or recycled).
protected override void ConfigureSpriteItemData(BaseSpriteItemData data)
{
// A new bolt is getting prepared, so let's schedule the sound effect.
if (m_SkyProfile.IsFeatureEnabled(ProfileFeatureKeys.ThunderFeature))
{
Invoke("PlayThunderBoltSound", m_ThunderSoundDelay);
}
}
// Select where the next sprite will be rendered at.
protected override void CalculateSpriteTRS(BaseSpriteItemData data, out Vector3 spritePosition, out Quaternion spriteRotation, out Vector3 spriteScale)
{
// Create some variety in rain drop sizes.
float minScale = m_SplashScale * (1.0f - m_SplashScaleVarience);
float uniformScale = Random.Range(minScale, m_SplashScale);
spritePosition = data.spritePosition;
spriteRotation = Quaternion.identity;
spriteScale = new Vector3(uniformScale, uniformScale, uniformScale);
}
public void Start()
{
state = SpriteState.Animating;
// Schedule the start/end time of this sprite sheet animation in the GPU.
startTime = BaseSpriteItemData.CalculateStartTimeWithDelay(delay);
endTime = BaseSpriteItemData.CalculateEndTime(startTime,
spriteSheetData.frameCount,
spriteSheetData.frameRate);
}
// Setup any per-instance data you need to pass.
protected override void PrepareDataArraysForRendering(int instanceId, BaseSpriteItemData data)
{
RainSplashData splash = data as RainSplashData;
// We could probably move this into the shader to save some CPU calculations if necessary.
Vector3 screenPoint = m_DepthCamera.WorldToScreenPoint(splash.spritePosition);
Vector2 cameraUV = new Vector2(screenPoint.x / m_DepthCamera.pixelWidth, screenPoint.y / m_DepthCamera.pixelHeight);
splash.depthTextureUV = cameraUV;
m_StartSplashYPositions[instanceId] = splash.spritePosition.y;
m_DepthUs[instanceId] = splash.depthTextureUV.x;
m_DepthVs[instanceId] = splash.depthTextureUV.y;
}
// Get or create a instance data field for a particle.
BaseSpriteItemData DequeueNextSpriteItemData()
{
BaseSpriteItemData data = null;
if (m_Available.Count == 0)
{
data = CreateSpriteItemData();
}
else
{
data = m_Available.Dequeue();
}
m_Active.Add(data);
return(data);
}
void GenerateNewSprites()
{
int spawnCount = GetNextSpawnCount();
Vector3 spritePosition;
Vector3 spriteScale;
Quaternion spriteRotation;
for (int i = 0; i < spawnCount; i++)
{
// Dequeue a sprite item data, and configure it.
BaseSpriteItemData data = DequeueNextSpriteItemData();
data.spriteSheetData = m_SpriteSheetLayout;
ConfigureSpriteItemData(data);
CalculateSpriteTRS(data, out spritePosition, out spriteRotation, out spriteScale);
data.SetTRSMatrix(spritePosition, spriteRotation, spriteScale);
data.Start();
}
}
// Select where the next sprite will be rendered at.
protected override void CalculateSpriteTRS(BaseSpriteItemData data, out Vector3 spritePosition, out Quaternion spriteRotation, out Vector3 spriteScale)
{
LightningSpawnArea area = GetRandomLightningSpawnArea();
float boltScale = CalculateLightningBoltScaleForArea(area);
spriteScale = new Vector3(boltScale, boltScale, boltScale);
spritePosition = GetRandomWorldPositionInsideSpawnArea(area);
// Always face the sprite textures towards the main camera.
if (Camera.main == null)
{
Debug.LogError("Can't billboard lightning to viewer since there is no main camera tagged.");
spriteRotation = area.transform.rotation;
}
else
{
spriteRotation = Quaternion.LookRotation(spritePosition - Camera.main.transform.position, Vector3.up);
}
}
void ReturnSpriteItemData(BaseSpriteItemData splash)
{
splash.Reset();
m_Active.Remove(splash);
m_Available.Enqueue(splash);
}
// Setup any per-instance data you need to pass. protected abstract void PrepareDataArraysForRendering(int instanceId, BaseSpriteItemData data);
// Configure a new sprite item data object properties, (could be new or recycled). protected abstract void ConfigureSpriteItemData(BaseSpriteItemData data);
// Select where the next sprite will be rendered at. protected abstract void CalculateSpriteTRS(BaseSpriteItemData data, out Vector3 spritePosition, out Quaternion spriteRotation, out Vector3 spriteScale);
// Configure a new sprite item data object properties, (could be new or recycled).
protected override void ConfigureSpriteItemData(BaseSpriteItemData data)
{
data.spritePosition = CreateWorldSplashPoint();
data.delay = Random.Range(0.0f, .5f);
}
// Setup any per-instance data you need to pass.
protected override void PrepareDataArraysForRendering(int instanceId, BaseSpriteItemData data)
{
// No custom properties.
}