/// <summary>
/// 将一个精灵层放入动画中
/// </summary>
/// <param name="layer">精灵层</param>
public void PutLayer(SpriteLayer layer)
{
if (layers == null || layers.Length == 0)
{
layers = new SpriteLayer[1];
layers[0] = layer;
}
else
{
// 判断是替换还是追加
bool replace = false;
for (int i = 0; i < layers.Length; i++)
{
if (layers[i].id == layer.id)
{
// 替换原有的层
layers[i] = layer;
replace = true;
break;
}
}
if (!replace)
{
// 追加
System.Array.Resize <SpriteLayer>(ref layers, layers.Length + 1);
layers[layers.Length - 1] = layer;
}
}
InitLayer(layer);
}
/// <summary>
/// 清除指定层的精灵
/// </summary>
/// <param name="layerId">层ID</param>
public void Clear(int layerId)
{
SpriteLayer layer = GetLayer(layerId);
if (layer != null)
{
Clear(layer);
}
}
private void InitLayerBySpriteInstance(SpriteLayer layer)
{
if (layer.spriteInstance != null)
{
Sprite sprite = layer.spriteInstance;
layer.maxIndex = sprite.maxIndex + layer.frameDelay;
sprite.flipHorizontal = flipHorizontal;
sprite.flipVertical = flipVertical;
}
}
private void InitLayerBySprite(SpriteLayer layer)
{
if (layer.spritePrefab != null)
{
Sprite sprite = Instantiate(layer.spritePrefab) as Sprite;
layer.spriteInstance = sprite;
sprite.transform.parent = layer.gameObject.transform;
layer.maxIndex = sprite.maxIndex + layer.frameDelay;
sprite.flipHorizontal = flipHorizontal;
sprite.flipVertical = flipVertical;
}
}
/// <summary>
/// 清除指定层的精灵
/// </summary>
/// <param name="layer">层ID</param>
public void Clear(SpriteLayer layer)
{
if (layer.gameObject != null)
{
DestroyGobj(layer.gameObject);
layer.gameObject = null;
}
layer.hidden = true;
layer.maxIndex = 0;
layer.spritePrefab = null;
layer.spriteInstance = null;
}
private void HideLayer(SpriteLayer layer, bool yes)
{
if (yes)
{
layer.hidden = true;
layer.gameObject.transform.localScale = Vector3.zero;
}
else
{
layer.hidden = false;
layer.gameObject.transform.localScale = Vector3.one;
}
}
private void InitLayer(SpriteLayer layer)
{
// 确保层 gameObject 存在，没有则生成
Transform layerTransform = transform.FindChild(layer.name);
if (layerTransform == null)
{
// game object of layer
GameObject layerGo = new GameObject();
layerGo.transform.parent = transform;
layerGo.name = layer.name;
layer.gameObject = layerGo;
}
else
{
layer.gameObject = layerTransform.gameObject;
// 获取精灵实例
if (layerTransform.childCount > 0)
{
Sprite sprite = null;
foreach (Transform child in layerTransform)
{
sprite = child.GetComponent <Sprite>();
if (sprite != null)
{
layer.spriteInstance = sprite;
break;
}
}
}
}
if (layer.spritePrefab != null)
{
if (layer.spriteInstance != null)
{
InitLayerBySpriteInstance(layer);
}
else
{
// 初始化 sprite 部分
InitLayerBySprite(layer);
}
// 计算动画最大索引
if (maxIndex < layer.maxIndex)
{
maxIndex = layer.maxIndex;
}
// 该层是否需要隐藏
if (layer.hiddenBeforeBegin)
{
HideLayer(layer, true);
}
}
else
{
HideLayer(layer, true);
}
}