Core

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55 entries in this module.

class Classes (2)

FString Unreal Engine's general-purpose heap-allocated string class. TArray BP The primary dynamic array container in Unreal Engine, equivalent to `std::vector`.

struct Structs (10)

FMath The primary math utility struct in Unreal Engine, providing static functions for arithmetic, interpolation, trigonometry, random number generation, and geometric operations. FName An immutable, case-insensitive string stored in a global name table and identified by an integer index. FText A localizable string that carries culture-aware display data. FVector BP A 3D vector with double-precision (UE 5. TMap An associative container that maps unique keys to values. TOptional A value container that may or may not hold a value of type T, analogous to std::optional. TSet An unordered container of unique elements backed by a hash set. TSharedPtr A non-intrusive reference-counted smart pointer for non-UObject types. TSharedRef A non-nullable, non-intrusive reference-counted smart pointer for non-UObject types. TWeakPtr A non-intrusive weak reference to an object managed by TSharedPtr/TSharedRef.

function Global Functions (43)

FMath::Abs Returns the absolute (non-negative) value of A. FMath::Atan2 Returns the angle in radians between the positive X axis and the point (X, Y), in the range [-π, π]. FMath::Clamp Clamps a value between a minimum and maximum, inclusive on both ends. FMath::Cos Returns the cosine of an angle given in radians. FMath::FInterpTo Smoothly moves a float toward a target value at a given speed, independent of frame rate. FMath::GetMappedRangeValueClamped Maps a value from one range to another, clamping the input to the source range first. FMath::IsNearlyEqual Returns true if two floating-point numbers are within a given absolute tolerance of each other. FMath::IsNearlyZero Returns true if a floating-point value is within ErrorTolerance of zero. FMath::Lerp Linearly interpolates between two values. FMath::RandRange Returns a random integer in the inclusive range [Min, Max]. FMath::Sin Returns the sine of an angle given in radians. FMath::Sqrt Returns the square root of Value. FMath::Square Returns A * A. FMath::VInterpTo Smoothly moves an FVector toward a target vector at a given speed, independently on each axis, frame-rate-independently. FString::Contains Returns true if this string contains the specified substring. FString::EndsWith Returns true if this string ends with the specified suffix. FString::Format Builds a string by substituting {Name} or {0}/{1}/. FString::Printf Constructs a new FString using printf-style format specifiers. FString::StartsWith Returns true if this string begins with the specified prefix. FString::ToLower Returns a new FString with all characters converted to lowercase. FString::ToUpper Returns a new FString with all characters converted to uppercase. FVector::CrossProduct BP Returns the cross product of two vectors. FVector::Distance BP Returns the Euclidean distance between two vectors. FVector::DotProduct BP Computes the dot product of two vectors: `A. FVector::GetSafeNormal Returns a normalised copy of the vector, or ResultIfZero if the vector is too short to safely normalise. FVector::IsNearlyZero Returns true if all three components are within Tolerance of zero. FVector::IsZero Returns true if all three components are exactly zero. FVector::RotateAngleAxis Returns this vector rotated around the given axis by AngleDeg degrees, using Rodrigues' rotation formula. TArray::Add Appends an element to the end of the array and returns its index. TArray::AddUnique Adds an element only if it is not already present in the array. TArray::Contains Returns true if the array contains at least one element equal to Item. TArray::ContainsByPredicate Returns true if any element satisfies the predicate. TArray::Emplace Constructs a new element in-place at the end of the array using the provided constructor arguments. TArray::Find Searches for Item using operator== and returns true if found, setting Index to its position. TArray::FindByPredicate Returns a pointer to the first element for which Pred returns true, or nullptr if none match. TArray::IsEmpty Returns true if the array contains no elements. TArray::Num Returns the number of elements currently in the array. TArray::Remove Removes all elements equal to Item and returns the number of elements removed. TArray::RemoveAll Removes all elements for which the predicate returns true, preserving order of remaining elements. TArray::Reserve Pre-allocates memory for at least Number elements without changing the logical size. TArray::Reset Removes all elements (calls destructors) but retains allocated memory for reuse. TArray::Sort Sorts the array in-place using an introspective sort (introsort). TArray::StableSort Sorts the array in-place and guarantees that equal elements retain their original relative order.