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October Challenge Update II: Electric Boogaloo

Posted by
October 12th, 2012 5:56 pm

The old world will burn in the fires of industry. Forests will fall. A new order will rise. We will drive the machine of war with the sword and the spear and the iron fist of the orc. – Saruman, The Lord of The Rings

That’s right, progress is being made on the newly-named Turing. After a brief attempt at using CL-OPENGL that led to inexplicable heap corruption, I switched back to full SDL. I decided that for ease of development I was just going to be lazy and blit everything to a buffer, and then draw a region of that buffer in order to implement scrolling. Unfortunately, Lispbuilder-SDL doesn’t have support for that like PyGame does. I don’t really see why not: It’s part of the native C SDL. Anyway, after messing with (sdl:cell)’s for a while, I wondered what would happen if I just tried drawing the buffer to a negative index, and lo and behold, it worked. Yay! Ten hours of debugging OpenGL code down the drain, but yay. Screenshot:

Will take a picture of my workspace soon, but software-wise, see if you can guess from the screenshot. All my fellow Lispers saying I need to use Emacs, bah. Old habits never die. Vim is better anyway.

tl;dr: Things got done.

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