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Tuning car game

hello, I had some ideas and I would like to know how to make a tuning car game in unreal, I think that instead of the cars are single, they would be for parts, for example, when selecting a bumper, is made the exchange only 3d model of the bumper by another. What comands and what logic do i need?

It depends a bit - you can just spawn an actor (“Bumper” for example) and destroy an actor (The old “Bumper”). But for a car you may want to look into “sockets” so that bumper kinda “plugs” into the car even when it is animated or moving. Research a bit about “sockets” and “Child actors” - these are topics you’ll probably use.