v0.16.0

Game:

• Redid Chell texture mapping
• Improved sound attenuation - @Bobbar
• Added some more materials
• Finished chamber 14 (moving stairs, triggers, decals, decor, and lighting)
• Added chamber 15 - with contributions from @Deconimus
• Improved object grabbing - @Deconimus
• Added more anti-softlock "escape hatches" - @Deconimus
• Save detached security cameras in save file - @Deconimus
• Overhauled player movement physics to fix some bugs and better match the original game
• Quality of life improvements
  • Prevent some invalid/unintended portal placements
  • Added missing test chamber ambience - @hackgrid
  • Confirm when leaving level via menu
  • Added more autosave points
• Performance improvements
• Many bug fixes
  • Crashes
  • Graphical issues
  • Cut off animations
  • Incorrect object behavior
  • Out of bounds

Development:

• Documented level format
• Easier compilation with different platforms / configurations
  • Configurable library/tool locations
  • Do not assume UTF-8
  • Support Mac-specific intro video format - @GiacomoGarbin
• First steps toward free libraries
  • Replaced libnustd functionality with newlib - @GiacomoGarbin
  • Abstracted controller and time code - @GiacomoGarbin
• Added some sanity checks when building to avoid potentially confusing mistakes during development
• Added tooling for more control over portal surfaces, culling, and collision generation
• Fixed some level export bugs