本帖最后由 bluerose 于 2016-8-27 18:26 编辑
在写完上一篇文章后,发现了一个问题: 那就是编写的插件无法实时预览。
在学习了Slate之后,我找到了方法: 重写SynchronizeProperties函数 头文件中添加: [mw_shl_code=cpp,true]#if WITH_EDITOR
UFUNCTION()
virtual void SynchronizeProperties() override;
#endif[/mw_shl_code] 因为只需要在编辑器中运行,所以加上了#if WITH_EDITOR cpp文件中添加: [mw_shl_code=cpp,true]
#if WITH_EDITOR
void UMiniMap::SynchronizeProperties()
{
Super::SynchronizeProperties();
WidgetSize = 400;
MapTextureSize = 512;
//构建组件
MainMap = NewObject<UImage>(this, TEXT("MainMap"));
PlayerCursor = NewObject<UImage>(this, TEXT("PlayerCursor"));
Frame = NewObject<UImage>(this, TEXT("Frame"));
//往Widget容器中加入组件
RootPanel = Cast<UCanvasPanel>(WidgetTree->RootWidget);
if (RootPanel)
{
RootPanel->AddChild(MainMap);
RootPanel->AddChild(PlayerCursor);
RootPanel->AddChild(Frame);
}
UMaterialInstance *MainMapMaterialInstance = LoadObject<UMaterialInstance>(NULL, TEXT("/Game/UI/Images/MiniMapMaterial_Instance"), NULL, LOAD_None, NULL);
if (MainMapMaterialInstance)
{
MainMapMaterial = UKismetMaterialLibrary::CreateDynamicMaterialInstance(GetWorld(), MainMapMaterialInstance);
if (MainMapMaterial->Parent->GetMaterial()->MaterialDomain == MD_UI)
{
UWidgetLayoutLibrary::SlotAsCanvasSlot(MainMap)->SetSize(FVector2D(WidgetSize, WidgetSize));
MainMap->SetBrushFromMaterial(MainMapMaterial);
MainMapMaterial->SetScalarParameterValue(FName(TEXT("MiniMapScaleRatio")), (float)WidgetSize / MapTextureSize);
}
}
UTexture2D* PlayerCursorTexture = LoadObject<UTexture2D>(NULL, TEXT("/Game/UI/Images/PlayerCursor"), NULL, LOAD_None, NULL);
if (PlayerCursorTexture)
{
UWidgetLayoutLibrary::SlotAsCanvasSlot(PlayerCursor)->SetSize(FVector2D(PlayerCursorTexture->GetSizeX(), PlayerCursorTexture->GetSizeY()));
PlayerCursorSize = PlayerCursorTexture->GetSizeX();
UWidgetLayoutLibrary::SlotAsCanvasSlot(PlayerCursor)->SetPosition(FVector2D(-PlayerCursorSize / 2 + WidgetSize / 2, -PlayerCursorSize / 2 + WidgetSize / 2));
PlayerCursor->SetBrushFromTexture(PlayerCursorTexture);
}
if (SetImageBurshFromMaterial(TEXT("/Game/UI/Images/FrameMaterial"), Frame, FVector2D(WidgetSize, WidgetSize)))
{
UWidgetLayoutLibrary::SlotAsCanvasSlot(Frame)->SetSize(FVector2D(WidgetSize, WidgetSize));
}
//后面可以考虑加入别的按钮以及边框
}
#endif[/mw_shl_code] 不过这样还有有一点小问题,在新建的蓝图(继承这个类的蓝图)中狂点,引擎会直接崩掉,目前找不到解决方案,引擎里都是用Slate的,论坛和AnswerHUB也都没有相关资料,不过这个问题不影响使用,所以教程到此为止了。
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