Unreal Engine 5.7 — Deprecated APIs

Last verified: 2026-02-13

Quick lookup table for deprecated APIs and their replacements. Format: Don't use X → Use Y instead

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Input

Migration: Install Enhanced Input plugin, create Input Actions and Input Mapping Contexts.

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Rendering

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World Building

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Animation

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Gameplay

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Niagara (VFX)

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Audio

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Networking

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C++ Scripting

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Quick Migration Patterns

Input Example

// ❌ Deprecated
void AMyCharacter::SetupPlayerInputComponent(UInputComponent* PlayerInputComponent) {
    PlayerInputComponent->BindAction("Jump", IE_Pressed, this, &ACharacter::Jump);
}

// ✅ Enhanced Input
#include "EnhancedInputComponent.h"

void AMyCharacter::SetupPlayerInputComponent(UInputComponent* PlayerInputComponent) {
    UEnhancedInputComponent* EIC = Cast<UEnhancedInputComponent>(PlayerInputComponent);
    if (EIC) {
        EIC->BindAction(JumpAction, ETriggerEvent::Started, this, &ACharacter::Jump);
    }
}

Material Example

// ❌ Deprecated: Legacy material
// Use standard material graph (still works but not recommended)

// ✅ Substrate Material
// Enable: Project Settings > Engine > Substrate > Enable Substrate
// Use Substrate nodes in material editor

World Partition Example

// ❌ Deprecated: Level streaming volumes
// Load/unload levels manually

// ✅ World Partition
// Enable: World Settings > Enable World Partition
// Use Data Layers for streaming

Particle System Example

// ❌ Deprecated: Cascade
UParticleSystemComponent* PSC = CreateDefaultSubobject<UParticleSystemComponent>(TEXT("Particles"));

// ✅ Niagara
UNiagaraComponent* NiagaraComp = CreateDefaultSubobject<UNiagaraComponent>(TEXT("Niagara"));

Audio Example

// ❌ Deprecated: Sound Cue for complex logic
// Use Sound Cue editor nodes

// ✅ MetaSounds
// Create MetaSound Source asset, use node-based audio

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Summary: UE 5.7 Tech Stack

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Sources:

• https://docs.unrealengine.com/5.7/en-US/deprecated-and-removed-features/
• https://dev.epicgames.com/documentation/en-us/unreal-engine/unreal-engine-5-7-release-notes