lordstanius / windig

Classic game Digger by Windmill Software remastered by Andrew Jenner and improved by others, updated to build with VS2017 and run on Windows.

Digger (for Windows)

Classic game by Windmill Software (1983) remastered by Andrew Jenner, ported to Windows by Tim Draper and improved by Petr Abdulin and others, updated to build with VS2017 and run on Windows.

Notes on implementation (by Petr Abdulin)

1. Symbol is a 24x24 (HxW) pixel square (in 640x400 mode pixels). For 320x200 mode it is actually a 12x12 square. It uses rather complicated storage for it's mask. The byte array is 12x6 size, but each of 6 bytes in horizontal row actually holds two 4-bit mask data, thus resulting in 12x12 symbol. This significally complicates drawing process.

2. Since back buffer is always 640x400 resolution, all coordinates passed to graphics functions are for this resolution.

3. Coodinates go from top left to bottom right. Passed to functions coordinates also specify top left corner from which object will be drawn.

Acronyms

DRF - Digger recording file