Code Samples

This is a basic demo of CUGL that shows off the basics features: loading assets, displaying an image, and creating simple UI elements. This demo is the one shown on the first day of class.

This is demo showshow to use a Scene Graph to get interesting parallax effects. It also shows how to write an application that takes multiple forms of input. This is the demo to start with when you are trying to figure out your input schemes for your game.

This demo shows off how to use the limited interactive UI elments supported by the engine: buttons, sliders, text fields, and layout managers. This demo makes heavy use of the assets JSON file. Your UX designer should be studying it to understand how to design interfaces.

This demo shows how to create the textured scene graph nodes. The classes can be used to draw solid polygons, or polygon paths. Furthermore, we show how to define these shapes in the assets JSON file so that your UX designer can create them. See the README.md for details.

The previous two demos utilize the 2d scene graph that we will be using for most of the course. However, CUGL does have some (limited) 3d features as well. In particular, we can load and manipulate Blender OBJ files. This simple demo allows you to load a model and view it in a rotating camera. See the README.md for details.

This demo shows the proper way to use Box2D in CUGL, decoupled from the scene graph. This is a port of (part 1 of) Lab 4 from 3152. The demo uses wireframes to show the physics fixtures. You can toggle these wireframes by double clicking, or using D on the keyboard.
 
NOTE: This demo was refactored fairly quickly to use deterministic physics this semester. As such the architecture is not ideal.

This demo shows the proper way to use Box2D to create complex, jointed objects. This is a port of (part 3 of) Lab 4 from 3152. This demo uses wireframes to show the physics fixtures. You can toggle these wireframes by double clicking, or using D on the keyboard.
 
NOTE: This demo was refactored fairly quickly to use deterministic physics this semester. As such the architecture is not ideal.

The last of the Box2d demos, this is a port of (part 2 of) Lab 4 from 3152. It does not show any Box2 features that you did not already see in the previous demos. Instead it shows you have to create a platformer with a floating joystick, seen in games like Oddmar the Viking.
 
NOTE: This demo was refactored fairly quickly to use deterministic physics this semester. As such the architecture is not ideal.

This demo is mostly identical to the Rocket Demo. However, instead of hard-coding the level layout, the level is defined by a JSON file. This demo shows you how to add custom loaders to the Asset Manager and use that to load your levels.
 
NOTE: This demo was refactored fairly quickly to use deterministic physics this semester. As such the architecture is not ideal.

This demo shows how to integrate a third-party library into your game. It builds upon the popular C++ Requests) library. This demo allows you to connect to a web server that supports a global forest. Anyone can connect to the web server to grow a tree. Trees that are grown are visible to everyone. See the README.txt for how to set-up your own server.

This is a barebones demo to show off tweening and the action timeline. This is an new updated version of our animaton engine that no longer requires that it be attached to a scene graph.

This is code sample demostrates how to use the new networked physics extensions CUGL 3.0. This code is actually an incomplete tutorial like the individual activities you have worked on in class. In fact this tutorial builds on the networking lab (as well as the geometry lab).

This demo shows off how to use the audio tools in CUGL. In particular, we illustrate features like channel control and reverb effects.

This simple demo shows how to use the CUGL render classes to create a custom OpenGL pipeline. With such a pipeline you can introduce custom shaders or even even have 3d graphics (provided you have taken CS 5625).

This demo shows how to create a rotating cube that transitions between 2d scenes. This was used in 2022 by the game Yeti, Set, Go to create a 2d platformer that circled a cubic mountain. It works by creating two different graphical pipelines – a 2d one and a 3d one – and combining them together.

This demo is a specialized shader effect to show how you might post-process a texture. It also combines a shader with a sprite batch layered on top, which is a common use case (and one that can cause problems if you do not bind and unbind correctly).

This demo shows how to integrate (JSON) levels generated by the Tiled level editor that is popular with many students in the introductory course. It heavily leverages custom property types. We have included the Tiled project with the demo.