Preparation for Ludum Dare 50

Today's goal: Add some useful features to the Substratic library in preparation for Ludum Dare!


  • Didn't have much time since last stream!
  • I have been thinking a lot about how to improve this channel

Let's polish a few things before Ludum Dare

This weekend is Ludum Dare 50! I'll be participating in the 48 hour "Compo" event. Here are the rules:

We'll talk about how I want to approach the competition in the next stream!

There are a few things I'd like to add to the Substratic library before we head into Ludum Dare 50 this weekend!

  • Aligned text rendering (center- and right-alignment)
  • Displaying an FPS counter (how fast are we, really?)
  • Automatic screen scale calculation (to render a pixellated game screen to a consistent output size)

For the last one, we're trying to target a low resolution (think retro games) within a specific viewport size, like 640x360 (16:9). Our "logical" resolution should be scaled up to the real window size as best as possible (and centered) while still keeping size within a power of 2.


DONE Write a function for calculating the pixel width of a string using a specific font

DONE Write a function for calculating the FPS, truncated to 3 decimal points

DONE Render the FPS counter to the top right of the window

DONE Render some text elsewhere on the screen

TODO Write some code to calculate the optimal viewport size and view matrix based on a target screen resolution