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how to use SetMaterial () to add multiple materials

hello I want to add several materials from the function SetMaterial()

 struct FConstructorStatics
 {
     ConstructorHelpers::FObjectFinderOptional<UMaterial> MaterialNumbers;
     FConstructorStatics()
         : MaterialNumbers(TEXT("/Game/Textures/dice_1_Mat.dice_1_Mat"))
     {
     }
 };
 static FConstructorStatics ConstructorStatics;

 Box = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("Box"));
 Box->SetMaterial(0, ConstructorStatics.MaterialNumbers.Get());

What I want is to add another material, for example, to MaterialNumbers

Box->SetMaterial(1, ConstructorStatics.MaterialNumbers.Get());

Product Version: UE 4.19
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asked Nov 04 '18 at 10:17 PM in C++ Programming

avatar image

danielf94
61 2 5 9

avatar image Brian Johnstone Nov 05 '18 at 04:21 PM

Do you already have multiple materials created in the /Game/Textures folder and you just want to get them assigned to your Box? Since you hard-coded only a single reference to dice_1_mat the other material won't ever be found.

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1 answer: sort voted first

Something like this?

 for(int i = 0; i < 100; i++)
 {
     ConstructorHelpers::FObjectFinderOptional<UMaterial> MaterialNumber(*FString::Printf(TEXT("/Game/Textures/dice_%i_Mat.dice_%i_Mat"), i+1, i+1));
     if(!MaterialNumber.Succeeded())
         break;
 
     Box->SetMaterial(i, MaterialNumber.Get());
 }

I used 100 as the maximum number of possible materials. This could be any arbitrary number or it could be set as a parameter of the CDO.

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answered Nov 05 '18 at 08:49 PM

Brian Johnstone (suspended)
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