Use AMB in C++

There are only 2 classes:

• UAMBEngineSubsystem - tracks the Effect Stacks, handles creating them and merges them on render.
• UAMBEffectStack - a class containing the properties of the effect.

AMB Engine Subsystem

Create AMB Effect Stack

UAMBEffectStack* Effect = UAMBEngineSubsystem::Get()->CreateAMBEffectStack();

Description:

This will create an AMB effect that will be tracked by the subsystem.

Note:

It is recommended this to be saved into an UPROPERTY variable or a variable in your blueprint, as the AMB system will not prevent this from being garbage collected!!

This also means that if the actor the variable lives on gets destroyed, the effect will disappear on the next GC update.

Outputs:

• Return Value - UAMBEffectStack*

Remove AMB Effect Stack

UAMBEngineSubsystem::Get()->RemoveAMBEffectStack( Effect );

Description:

This will delete the effect stack and make all references NULL.

Inputs:

• Effect Stack - UAMBEffectStack*

AMB Effect Stack

SetActive

Effect->SetActive( true );

Description: Controls if the effect should be active or not.

Inputs:

• Active

SetCurrentFrameWeight

Effect->SetCurrentFrameWeight( 0.5f );

Description:

Sets how much the current frame will affect the accumulation buffer. 1.0f == full weight.

Inputs:

• Current Frame Weight ( Default: 1.0 ) - The weight of the current frame.

Set Zoom

Effect->SetZoom( FVector2D( 4.0f ) );

Description:

Sets how much zoom to apply to the accumulation buffer.

The recommended starting value is 4.

Inputs:

• Zoom X ( Default: 0.0 ) - Zoom factor on X axis
• Zoom Y ( Default: 0.0 ) - Zoom factor on Y axis

Reset Frame Accumulation

Effect->ResetFrameAccumulation();

Description: Resets the accumulation buffer.