Basic Vehicle Construction

Build basic vehicles in Garry's Mod. Learn chassis, wheels, propulsion, and steering basics. Create your first moving contraption.

Constructing functional vehicles in Garry's Mod is a cornerstone of its sandbox appeal. This section guides you through the fundamental principles of building basic vehicles, covering essential components like chassis, wheels, and propulsion. Learn how to create vehicles that move and handle reasonably well.

The Foundation: Chassis and Structure

Every vehicle starts with a chassis. This is the main body or frame that holds everything together. You can use various props for this, such as large flat panels, boxes, or even custom models. The key is to create a stable base that can support the weight of other components and withstand physics forces.

Essential Components: Wheels

Wheels are what allow your vehicle to move. You'll typically use the `prop_physics_override` entity for wheels, as it allows for more control. Spawn four wheel props and weld them to the chassis. Ensure they are positioned correctly for balance and steering.

Propulsion Methods

There are several ways to propel your vehicle:

• Thrusters: These are simple entities that exert a force in a specific direction. You can attach them to the rear of your vehicle to push it forward.
• Engines (Wiremod): For more advanced vehicles, Wiremod engines can provide controlled power to the wheels.
• Explosive Charges: A crude but effective method for quick bursts of speed, though often unstable.

Connecting Components

Welding is crucial for keeping your vehicle together. Use the Weld Tool to permanently attach components. For wheels, you'll want to weld them to the chassis. If you're using Wiremod for propulsion or steering, you'll need to connect the relevant inputs and outputs.

Steering Mechanics

Basic steering can be achieved by attaching a steering wheel or lever to the front wheels. Using Wiremod, you can connect the steering input to the rotation of the front wheels. For more advanced steering, you might need to implement a pivot system for the front axle.

Balancing and Stability

A well-balanced vehicle is stable. Consider the weight distribution of your components. Heavy components should be placed low and centrally. Experiment with different chassis dess and component placements to achieve optimal balance.

Example: Building a Simple Car

1. Spawn Chassis: Spawn a large, flat prop (e.g., `models/props_junk/metal_sheet01a.mdl`).
2. Spawn Wheels: Spawn four `prop_physics_override` entities and set their models to a wheel prop (e.g., `models/props_vehicles/wheel001.mdl`).
3. Weld Wheels: Weld the wheels to the underside of the chassis, ensuring they are aligned.
4. Add Thruster: Spawn a `prop_thruster` and weld it to the rear of the chassis, pointing backward.
5. Add Control: Spawn a `prop_lever` and weld it to the top of the chassis.
6. Wire Thruster: Use the Wire Tool to connect the 'On' output of the lever to the 'On' input of the thruster.
7. Test: Use the Physics Gun to push the car and activate the lever to see if it moves. Adjust the thruster's force if needed.

This basic setup will give you a rudimentary car. From here, you can add more details, improve the steering, and experiment with different propulsion systems to create more sophisticated vehicles.