我编写了一些代码，允许用户通过在流资产中加载输入图像然后使用这些图像创建对象来在编辑器模式下实例化对象。
这很好用，问题是当我尝试使用这些对象之一创建预制件时。由于某种原因，图像没有保存在预制件中，因此当我加载该预制件时，我得到的是白色图像，而不是原始游戏对象中的图像。
更新：事实证明，我的背景屏幕实际上工作正常，但其他游戏对象都没有。所以我不确定出了什么问题以及为什么它只适用于某些对象而不适用于其他对象。
这是我的代码：
public class PlacementObject : MonoBehaviour
{
private loadbackgroundImages backgroundReference;
public Sprite mouseShape;
private Image mouseSprite;
private RectTransform mouseMovement;
public Canvas myCanvas;
private int currentState = 0;
private bool canMove = true;
public List<Texture2D> allButtons;
private List<Sprite> allButtonsSprite;
private List<Sprite> allUISprites;
private List<Texture2D> allUIElements;
private int uiButtonStates = 0;
private int uiElementStates = 0;
public GameObject afterImport;
private GameObject clonedObject;
public GameObject child;
public GameObject objectToBeExported;
private bool isLoading = true;
private bool isfinishedUploading;
private Vector2 defaultSize;
// Use this for initialization
void Start()
{
allUIElements = new List<Texture2D>();
allButtons = new List<Texture2D>();
var info = new DirectoryInfo(Application.streamingAssetsPath + "/" + "UIButtons");
var fileInfo = info.GetFiles();
foreach (FileInfo file in fileInfo)
{
if (file.Extension == ".png" || file.Extension == ".jpg")
{
StartCoroutine(uploadButtonImages(System.IO.Path.Combine("file:///" + Application.streamingAssetsPath, "UIButtons/" + file.Name)));
}
}
var info2 = new DirectoryInfo(Application.streamingAssetsPath + "/" + "UIElements");
var fileInfo2 = info2.GetFiles();
foreach (FileInfo file2 in fileInfo2)
{
if (file2.Extension == ".png" || file2.Extension == ".jpg")
{
StartCoroutine(uploadUiImages(System.IO.Path.Combine("file:///" + Application.streamingAssetsPath, "UIElements/" + file2.Name)));
}
}
allButtonsSprite = new List<Sprite>();
allUISprites = new List<Sprite>();
//createSpritesForButtons(allButtons);
// createSpritesForElements(allUIElements);
mouseSprite = GetComponent<Image>();
mouseSprite.sprite = mouseShape;
mouseMovement = GetComponent<RectTransform>();
backgroundReference = FindObjectOfType<loadbackgroundImages>();
isfinishedUploading = true;
defaultSize = mouseMovement.sizeDelta;
}
// Update is called once per frame
void Update()
{
print(isLoading);
if (isfinishedUploading && backgroundReference.isfinished)
{
isLoading = false;
}
Cursor.visible = false;
transform.position = Input.mousePosition;
Vector2 pos;
RectTransformUtility.ScreenPointToLocalPointInRectangle(myCanvas.transform as RectTransform, Input.mousePosition, myCanvas.worldCamera, out pos);
transform.position = myCanvas.transform.TransformPoint(pos);
if (isLoading == false)
{
if (currentState == 2)
{
mouseSprite.sprite = allUISprites[uiElementStates];
}
if (currentState == 1)
{
mouseSprite.sprite = allButtonsSprite[uiButtonStates];
}
if (Input.GetKeyDown(KeyCode.V))
{
currentState = 0;
mouseSprite.sprite = mouseShape;
mouseMovement.sizeDelta = defaultSize;
}
else if (Input.GetKeyDown(KeyCode.B))
{
currentState = 1;
}
else if (Input.GetKeyDown(KeyCode.N))
{
currentState = 2;
}
if (Input.GetMouseButtonDown(0))
{
placeObject();
}
if (Input.GetAxis("Horizontal") > 0 && canMove)
{
canMove = false;
if (currentState == 0)
{
changeBackgroundNext();
}
else if (currentState == 1)
{
changeButtonNext();
}
else if (currentState == 2)
{
changeElementNext();
}
}
if (Input.GetMouseButton(1))
{
rotateObject();
}
if (Input.GetAxis("Vertical") < 0)
{
if (currentState == 1 || currentState == 2)
{
mouseMovement.sizeDelta -= new Vector2(1, 1);
}
}
if (Input.GetAxis("Vertical") > 0)
{
if (currentState == 1 || currentState == 2)
{
mouseMovement.sizeDelta += new Vector2(1, 1);
}
}
if (Input.GetAxis("Horizontal") < 0 && canMove)
{
canMove = false;
if (currentState == 0)
{
changeBackgroundPrev();
}
else if (currentState == 1)
{
changeButtonPrev();
}
else if (currentState == 2)
{
changeElementPrev();
}
}
if (Input.GetAxis("Horizontal") == 0)
{
canMove = true;
}
if (Input.GetKeyDown(KeyCode.Space))
{
var newBackgroundSprite = backgroundReference.allSprites[backgroundReference.imageIndex];
backgroundReference.imageReference.sprite = newBackgroundSprite;
// exportObject();
// importObject();
#if UNITY_EDITOR
var prefab = PrefabUtility.CreatePrefab( "Assets/Resources/Image.prefab", FindObjectOfType<loadbackgroundImages>().gameObject);
AssetDatabase.Refresh();
#endif
}
}
}
void rotateObject()
{
if (currentState == 1 || currentState == 2)
mouseMovement.eulerAngles += new Vector3(0, 0, 1);
}
private void exportObject()
{
UIData saveData = new UIData();
saveData.inputObject = objectToBeExported;
//Save data from PlayerInfo to a file named players
DataSaver.saveData(saveData, "UI");
}
public void importObject()
{
UIData loadedData = DataSaver.loadData<UIData>("UI");
if (loadedData == null)
{
return;
}
//Display loaded Data
Debug.Log("Life: " + loadedData.inputObject);
afterImport = loadedData.inputObject;
}
private void changeBackgroundNext()
{
backgroundReference.imageIndex++;
if (backgroundReference.imageIndex >= backgroundReference.allSprites.Count)
{
backgroundReference.imageIndex = 0;
}
}
private void changeButtonNext()
{
uiButtonStates++;
if (uiButtonStates >= allButtonsSprite.Count)
{
uiButtonStates = 0;
}
}
private void changeElementNext()
{
uiElementStates++;
if (uiElementStates >= allUISprites.Count)
{
uiElementStates = 0;
}
}
private void changeElementPrev()
{
uiElementStates--;
if (uiElementStates < 0)
{
uiElementStates = allUISprites.Count - 1;
}
}
private void changeButtonPrev()
{
uiButtonStates--;
if (uiButtonStates < 0)
{
uiButtonStates = allButtonsSprite.Count - 1;
}
}
private void changeBackgroundPrev()
{
backgroundReference.imageIndex--;
if (backgroundReference.imageIndex < 0)
{
backgroundReference.imageIndex = backgroundReference.allSprites.Count - 1;
}
}
IEnumerator uploadButtonImages(string url)
{
WWW www = new WWW(url);
yield return www;
if (www != null)
{
allButtons.Add(www.texture);
allButtonsSprite.Add(Sprite.Create(www.texture, new Rect(0, 0, www.texture.width, www.texture.height), new Vector2(0.5f, 0.5f)));
}
}
private void createSpritesForButtons(List<Texture2D> allTextures)
{
for (int i = 0; i < allTextures.Count; i++)
{
Sprite tempSprite = Sprite.Create(allTextures[i], new Rect(0, 0, allTextures[i].width, allTextures[i].height), new Vector2(0.5f, 0.5f));
tempSprite.name = "Button" + i;
allButtonsSprite.Add(tempSprite);
}
}
IEnumerator uploadUiImages(string url)
{
WWW www = new WWW(url);
yield return www;
print(url);
if (www != null)
{
allUIElements.Add(www.texture);
allUISprites.Add(Sprite.Create(www.texture, new Rect(0, 0, www.texture.width, www.texture.height), new Vector2(0.5f, 0.5f)));
}
}
private void createSpritesForElements(List<Texture2D> allTextures)
{
for (int i = 0; i < allTextures.Count; i++)
{
Sprite tempSprite = Sprite.Create(allTextures[i], new Rect(0, 0, allTextures[i].width, allTextures[i].height), new Vector2(0.5f, 0.5f));
tempSprite.name = "" + i;
allUISprites.Add(tempSprite);
}
}
private void placeObject()
{
if (currentState == 1)
{
var gameObject = Instantiate(child, transform.position, Quaternion.Euler(mouseMovement.eulerAngles.x, mouseMovement.eulerAngles.y, mouseMovement.eulerAngles.z), backgroundReference.transform);
gameObject.GetComponent<RectTransform>().sizeDelta = new Vector2(mouseMovement.sizeDelta.x, mouseMovement.sizeDelta.y);
var newSprite = allButtonsSprite[uiButtonStates];
gameObject.GetComponent<Image>().sprite = newSprite;
gameObject.AddComponent<Button>();
}
if (currentState == 2)
{
var gameObject = Instantiate(child, transform.position, Quaternion.Euler(mouseMovement.eulerAngles.x, mouseMovement.eulerAngles.y, mouseMovement.eulerAngles.z), backgroundReference.transform);
gameObject.GetComponent<RectTransform>().sizeDelta = new Vector2(mouseMovement.sizeDelta.x, mouseMovement.sizeDelta.y);
var newSprite = allUISprites[uiElementStates];
gameObject.GetComponent<Image>().sprite = newSprite;
}
}
}