Games

Games and visual demos, drawn directly on the text screen. Their source is a good reference for full-screen programs, for example 'snake open.

Games

snake is steered with the arrow keys and pong with left and right. life runs Conway's Game of Life on raw memory from alloc. q quits all three.

Visual demos

rain, stars, bounce, sieve (the sieve of Eratosthenes), sorting (bubble sort as bars) and fortune.

Running several in other tabs and then top shows them all at once.

Writing your own

They all follow the same pattern: wipe and nocursor, then a while loop that checks key?, draws with put and text and sleeps a tick, and finally wipe and "omega" title. quit-key? checks for q, Esc and Ctrl-C. Put your program in a unit and add it to apps.