Documentation: Replicated Vaulting and Mantling

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Component Settings

Mantling

Aurora Devs

Mantling

Mantling Algorithm

Mantling is done in a number of steps

Trace forwards and look for obstacle

If obstacle is found, compute its dimensions (height)

If height is greater than MidMantleHeight, then use MantleHighMontage, otherwise play MantleLowMontage

During animation, interpolate the character’s position to mantle :

vertically upward before the obstacle with Montage Notify MN_Mantle_InterpUpward

horizontally forward along the obstacle with Montage Notify MN_Mantle_InterpForward

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Mantling Settings

You can change the Mantling settings in the Component under Details Panels

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General Settings

bMantlingEnabled: Can the character ever mantle?

bAutoMantleWhenFalling: If true, character will automatically mantle on obstacles on impact when falling/jumping

MinMantleHeight: Minimum height that we can mantle

MidMantleHeight: Height above which a different animation should play when mantling (MantleHigh Montages) This height should always be above half height!

MaxMantleHeight: Max height that we can mantle

MidMantleHeightWhenFalling: Height above which a different animation should play when mantling from a jump (MantleHigh Montages) This height should always be above half height!

MaxMantleHeightWhenFalling: Max height that we can mantle when we are in the air.

MantleLandingPositionOffset: A forward offset applied when landing from the mantling.

Mantle Low - Animation Settings

MantlingLow_StartPositionForwardOffset: Distance to offset the mantle start position with (forward)

MantlingLow_VerticalInterpDuration: The duration of the vertical interpolation during the LOW mantling montage. Basically how long should it takes for character to go from the ground up to the level of the obstacle

MantlingLow_ForwardInterpDuration: The duration of the horizontal interpolation during the LOW mantling montage. Basically how long it should take for the character to reach the landing position from the top of the obstacleMidMantleHeight (or MidMantleHeightWhenFalling if character is in the air)

Mantle High - Animation Settings

MantlingHigh_StartPositionForwardOffset: Distance to offset the mantle start position with (forward)

MantlingHigh_VerticalInterpDuration: The duration of the vertical interpolation during the HIGH mantling montage. Basically how long should it takes for character to go from the ground up to the level of the obstacle

MantlingHigh_ForwardInterpDuration: The duration of the horizontal interpolation during the HIGH mantling montage. Basically how long it should take for the character to reach the landing position from the top of the obstacle

Mantle Montages

MantleLowMontage: Montage to play when mantling an object whose height doesn’t exceed MidMantleHeight (or MidMantleHeightWhenFalling if character is in the air)

MantleHighMontage: Montage to play when mantling an object whose height exceeds MidMantleHeight (or MidMantleHeightWhenFalling if character is in the air)

Both of these montages should have ForceRootLock checked and contain the montage notifies MN_Mantle_InterpUpward and MN_Mantle_InterpForward

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Using ALS v4 Mantling Animations

Install RVM

Download and extract

this archive⁠

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Copy the Content folder from the extracted archive folder

Go to your newly created project folder (the one containing the .uproject file)

Paste the Content folder you have copied in this folder

Open the newly created project

Go to AuroraDevs_RVM/Blueprints/Character/ and open BP_ThirdPersonCharacter

Click on BP_ParkourComponent in the Components Tab

In the Details panel, scroll down until Mantling Low Animation Settings category and replace the animation montage with ALS_N_Mantle_1m_RH_Montage

Scroll down until Mantling High Animation Settings category and replace the animation montage with ALS_N_Mantle_2m_Montage

The ALS montages are retargeted to our UE4 Manny skeleton. Our UE5 Manny can use these montages since the skeletons are compatible. If you’re using a different skeleton, you may need to retarget these montages.

Use the following settings (You can tweak them if you feel the need)

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Extra Vaulting/Mantling Settings

Extra Settings

Auto Mantle when Falling : Setting this to true will make the character automatically mantle if there is a forward impact against an obstacle while falling/jumping (Should be disabled if integrating RVM with ALS v4)

Mantle if Vault Fails : Setting this to true will make the character automatically mantle if a vault fails for any reason (obstacle too long, not enough space to land on other side, obstacle from above, etc..) (Should be enabled if integrating RVM with ALS v4)

Ignored Tag : Any actor with this tag cannot be vaulted/mantled upon

Max Distance from Obstacle : The forward trace distance when trying to find an obstacle to vault/mantle upon. If actor is too far, the vault/mantle will fail.

bIgnoreClientErrors : If true, we should ignore server location difference checks for client error on this movement component. This can be useful when character is jittery during vaulting/mantling/sliding.