How to make an animation play and not stop when a player is walking?

Hey. I'm making a gun, and I'm looking for a way for my animation to play when the player is walking too because whenever he's walking the animation stops. Thanks.

Basically you make an animation firstly using animation editor, next you export it and get the id and then use:

local Players = game:GetService("Players")
 
local function onCharacterAdded(character)
	local humanoid = character:WaitForChild("Humanoid")
 
	for _, playingTracks in pairs(humanoid:GetPlayingAnimationTracks()) do
		playingTracks:Stop(0)
	end
 
	local animateScript = character:WaitForChild("Animate")
	animateScript.run.RunAnim.AnimationId = "rbxassetid://616163682"        -- Run
	animateScript.walk.WalkAnim.AnimationId = "rbxassetid://616168032"      -- Walk
	animateScript.jump.JumpAnim.AnimationId = "rbxassetid://616161997"      -- Jump
	animateScript.idle.Animation1.AnimationId = "rbxassetid://616158929"    -- Idle (Variation 1)
	animateScript.idle.Animation2.AnimationId = "rbxassetid://616160636"    -- Idle (Variation 2)
	animateScript.fall.FallAnim.AnimationId = "rbxassetid://616157476"      -- Fall
	animateScript.swim.Swim.AnimationId = "rbxassetid://616165109"          -- Swim (Active)
	animateScript.swimidle.SwimIdle.AnimationId = "rbxassetid://616166655"  -- Swim (Idle)
	animateScript.climb.ClimbAnim.AnimationId = "rbxassetid://616156119"    -- Climb
end
 
local function onPlayerAdded(player)
	player.CharacterAppearanceLoaded:Connect(onCharacterAdded)
end
 
Players.PlayerAdded:Connect(onPlayerAdded)

credit to the dev form: https://developer.roblox.com/en-us/articles/using-animations-in-games

If you want the animation to play when the character stops walking, simply set the priority of the animation to idle and play the animation however you decide and whenever the character isn't moving and doesn't have a higher priority animation using the parts used for that animation it'll play the animation (if that make sense)