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How to access an array element from a pointer?

I'm having problems with this code

header:

 protected:
 
     virtual void BeginPlay() override;
 
     // Arrays of all of the spawn points that are available
     TArray<ASSpawnPoint*> TeamOneSpawnPads, TeamTwoSpawnPads;
 
     // Integers that hold the number of players on each team
     int32 TeamOneAmount, TeamTwoAmount;

cpp:

 FVector ASGameMode::GetSpawnLocation(int32 Team)
 {
     FVector NewSpawnLocation = FVector(0.0f);
     TArray<ASSpawnPoint*>* SpawnPads;
 
     // Set up an array that points to the correct teams spawn point array
     if (Team == 1)
     {
         SpawnPads = &TeamOneSpawnPads;
     }
     else
     {
         SpawnPads = &TeamTwoSpawnPads;
     }
     
     // Generate a random number that we will use to reference a spawn pad
     int32 RandomSpawnerInt = FMath::FRandRange(0.0f, SpawnPads->Num() - 1);

     // Get a reference to the spawn pad we will be using
     // I'm pretty sure this is what is causing problems
     ASSpawnPoint* SpawnPad = SpawnPads[RandomSpawnerInt];
 
     // Set the location that we will return to the location we get from the spawn pad
     NewSpawnLocation = SpawnPad->GetRespawnLocation();
 
     // Remove the spawn pad from the availability array
     SpawnPads.Remove(SpawnPads[RandomSpawnerInt]);
     
     return NewSpawnLocation;
 }

Returns:

 (21): `error C2440: 'initializing': cannot convert from 'TArray<ASSpawnPoint *,FDefaultAllocator>' to 'ASSpawnPoint *&'


Product Version: UE 4.20
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asked Jan 18 '19 at 08:47 PM in C++ Programming

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Void_Gabe
26 6 11 11

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1 answer: sort voted first

You need to deference the array pointer to use the [] operator.

 ASSpawnPoint* SpawnPad = SpawnPads[RandomSpawnerInt];

to

 ASSpawnPoint* SpawnPad = (*SpawnPads)[RandomSpawnerInt];
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answered Jan 18 '19 at 10:11 PM

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BenVlodgi
2.1k 37 17 52

avatar image Void_Gabe Jan 18 '19 at 10:26 PM

Thank you! I've been trying to figure this out for days.

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