Ursina Engine | Frequently Asked Questions

How should I structure my project?

A clear project layout helps keep your code and assets organized. A typical setup looks like this:

project_folder/         # one folder per project
├── main.py             # entry point
├── level.py
├── player.py
├── enemies.py
├── player_sprite.png
└── textures/           # optional subfolder for image assets
    ├── enemy_1.png
    └── enemy_2.png

Put related scripts and resources together.
Use subfolders (like textures/ or models/) for large asset collections.
Keep main.py as the script that launches your game.

How do I move the camera?

The built-in camera is just another Entity. You can set its position, rotation, or even parent it to other objects:

from ursina import *

app = Ursina()
camera.position = Vec3(1, 1, 0)
camera.rotation = Vec3(30, 45, 0)
app.run()

Why use Python for game development? Isn’t it slow?

Python itself executes game logic, while the heavy lifting—rendering and physics—is done in C++ and shaders. Benefits include:

Rapid development: less boilerplate, faster iteration
Readable code: easier to maintain and refactor
Extensibility: integrate custom C++ modules or shaders when needed

In practice, Python’s overhead is negligible for most indie and hobby projects.

How do I call a function with a delay?

Use the built-in invoke utility to schedule a function call:

from ursina import *

def say_hello():
    print('Hello after 2 seconds!')

invoke(say_hello, delay=2)

You can pass arguments or keyword arguments just as you would to the function:

def greet(name, emoji='😊'):
    print(f'Hello {name} {emoji}')

invoke(greet, 'Alice', emoji='👋', delay=1.5)

How can I use Panda3D alongside Ursina?

Under the hood, an Entity in Ursina is a NodePath in Panda3D, and Ursina itself is built on a ShowBase. To blend the two:

Import Panda3D modules directly alongside Ursina.
Treat your Entity objects as Panda3D NodePaths when you need low-level control.
Write custom Panda3D shaders and assign them to your Ursina Entity via the .shader property.

For full details on Panda3D’s shader system, see Panda3D’s official documentation.