Projects

Refactored Engine

Programmed in C++, uses emscripten to compile to be run in a web browser.

See impossibleroad.net for live in-browser demonstration.

Built in Adobe Flash Builder using the AIR framework
Used Stage3D API to use GPU rendering available in Flash platform
Port of previous project in new language to become better accommodated with ActionScript 3 (AS3)
Valuable knowledge gained: negative impact of language’s garbage collection on performance and how to avoid it
- Good experiment, but wouldn’t pursue making a performant game in AS3 in long-term, especially on mobile
- Also poor support from Adobe: AGAL mini-assembler isn’t included in Stage3D library, mip-mapping examples from Adobe tutorials are flat-out incorrect, etc.
Download AIR executable here (requires Adobe AIR Runtime)
- Controls:
  - WASDQE move camera position
  - arrow keys move camera orientation
  - F enables/disables frustum culling updates

Built with C++ in Visual Studio 2010, OpenGL 4.0, and DirectX 11
API-agnostic – has both OpenGL and DirectX backends
Shader effects include normal mapping, parallax mapping, shadow maps, HDR post-processing with tonemapping and screen-space ambient occlusion
Used to display models from 3ds Max and levels from Quake 3
Screen Space Ambient Occlusion example code can be found here

Screen-space ambient occlusion effect before it’s added to the scene from 3ds Max

Ambient occlusion on a scene with textures turned off – note the “smoky” areas

A Quake 3 level running in my custom engine

Based on the 2006 GDC talk from Jeff Orkin
NPCs have a certain state (hunger, amount of food, amount of money, etc.)
NPCs also have actions they can perform to change their state (eat, bake bread, find money, etc.)
In order to reach a desired state (not hungry, rich, etc.), they formulate a plan based on the actions they can perform and execute it
Example code can be found here

Interactive cloth simulation
Physically push cloth, or cut parts of it out, or blow wind on it to make it wave
Verlet integration physics
Wiimote connected to computer via bluetooth to aim pointer (cooler in theory than in practice)
Project folder can be downloaded here