API Reference – USeedSubsystem
All functions are BlueprintCallable unless marked BlueprintPure.
Seed management
void SetGameSeed(int32 InSeed)
Initializes the random stream with a given seed.
int32 GenerateRandomSeed()
Generates and stores a new seed then returns it.
int32 GetGameSeed() - BlueprintPure
Returns the current seed.
Random values (ints)
int32 GetRandomIntInRange(int32 Min = 0, int32 Max = 100, FString Salt = "", bool bDeterministic = true)
Returns a random integer in the specified range using the current seed and optional salt.
int32 GetRandomIntFromCurve(UCurveFloat* Curve, FString Salt = "", bool bDeterministic = true)
Returns a random value sampled from the given float curve.
int32 GetRandomInt(FString Salt = "", bool bDeterministic = true)
Unbounded-ish integer (uses half-limits internally for safety).
Random values (floats)
float GetRandomFloatInRange(float Min = 0.f, float Max = 1.f, FString Salt = "", bool bDeterministic = true)
Returns a random float in the specified range using the current seed and optional salt.
float GetRandomFloatFromCurve(UCurveFloat* Curve, FString Salt = "", bool bDeterministic = true)
Returns a random value sampled from the given float curve.
float GetRandomFloat(FString Salt = "", bool bDeterministic = true)
Returns a random float between 0 and 1 using the current seed and optional salt.
Strings
FString GetRandomString(int32 Length = 16, FString Salt = "", bool bDeterministic = true)
Generates a random string of the specified length using the current seed and salt.
Enums
uint8 GetRandomEnum(uint8 MaxEnumVal = 1, FString Salt = "", bool bDeterministic = true)
Returns a random enum value in the range [0, MaxEnumVal].
Tip: Pass the last enum entry, not the count.
uint8 GetRandomEnumArray(const TArray<uint8>& EnumArray, FString Salt = "", bool bDeterministic = true)
Returns a random value from the provided enum array.
uint8 GetRandomEnumWeighted(const TMap<uint8, float>& Weights, FString Salt = "", bool bDeterministic = true)
Returns a random enum value based on provided weights.
Streams
FRandomStream GetRandomSeedStream(FString Salt = "", bool bDeterministic = true) - BlueprintPure
Returns a random stream initialized with the current seed and salt.
FRandomStream GetSeedStream() - BlueprintPure
Returns the current random stream.
Console Variables
SeedSubsystem.EditorSeed - editor override for stable iteration.
