3D Kinematic Car on Godot 4 レシピ

3D Kinematic Car: Base

Mon, 01 Jan 0001 00:00:00 +0000

Tip

This article is being updated from Godot 3 to Godot 4.

Problem

You’re looking to make a 3D driving or racing game and don’t know where to start.

Solution

Note

Even in 3D, cars tend to remain on the ground. For this reason, movement can (mostly) be treated as if it were 2D. Much of the car’s movement code will be very much like the 2D: Car Steering recipe. It’s recommended that you review that recipe before proceeding with this one.

3D Kinematic Car: Traction/Drifting

Mon, 01 Jan 0001 00:00:00 +0000

Tip

This article is being updated from Godot 3 to Godot 4.

Problem

You’ve got a kinematic car, but you don’t like the “on rails” feeling, especially at high speeds. You’d like to have some “slip” so that you can have drifting and loss of traction.

Solution

When the car is drifting, the heading of the car (the direction it’s pointing) may not be the same as its velocity (the direction it’s moving). Turning the wheel will make the car turn, but the velocity will not instantly “catch up” - instead, we’ll use lerp() (linear interpolation) to gradually move the velocity to the desired direction.

3D Kinematic Car: Chase Camera

Mon, 01 Jan 0001 00:00:00 +0000

Tip

This article is being updated from Godot 3 to Godot 4.

Problem

You want a “chase camera” that can follow your car (or any other object).

Solution

Note

Godot has a built-in InterpolatedCamera node that does most of what’s described here. However, we’re not going to use it for two reasons: first, it has a tendency to stutter when following kinematic bodies, and second, it’s getting removed in Godot 4.0. Setting up our own is really easy though, so don’t worry.

3D Kinematic Car: Slopes & Ramps

Mon, 01 Jan 0001 00:00:00 +0000

Tip

This article is being updated from Godot 3 to Godot 4.

Problem

Your Kinematic Car climbs slopes, but it doesn’t look quite right:

Solution

Kinematic bodies don’t automatically rotate on collision. When the wheels aren’t both touching the ground, as in the image above, we’ll need to align the car manually.

To begin, we need to detect when the wheel isn’t on the ground. Add two RayCast nodes to the car and align them with the front and rear wheels like so: