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- How was the main mechanic of the game Qix implemented?
The scenario where the player splits the two Qix could be detected by running the above scanning algorithm for the first Qix, and then starting it for the second but stopping as soon as code encounters a pixel on the old boundary If that pixel is on the path surrounding the first Qix, both are surrounded by that path Otherwise, the Qix were
- Spider and snake in a square - Retrocomputing Stack Exchange
With Qix, you went to the next level as soon as you claimed more than half of the play space You got points proportional to the claimed area, so a big part of advanced game play was building out narrow walls, and then luring the Qix into a confined space that you could quickly close off, thereby claiming a much larger than 50% portion with a single stroke
- What implementations of BASIC had a robust flood fill operator?
In most applications a constrained flood fill isn't greatly useful It'd be OK for something like a drawing program but not so much for a realtime game e g Qix For something like a graphical adventure that does procedurally generated pics, it'd be OK since you'd obviously test and correct any anomolies during development
- Does Heart of the Alien use the same game engine as Another World?
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- How did Elite on the NES work? - Retrocomputing Stack Exchange
This approach would be workable for a game like Qix, which doesn't update very much content every frame, but unworkable for Elite, where each animation frame is drawn "from scratch" European (PAL) NES consoles only allow graphics memory to be accessed during about 20% of each frame time
- Would having the consoles CPU help in emulation hypothetically?
For purposes of emulating program execution using only new hardware, I don't think inclusion of vintage components would be particularly helpful except in cases where behavior would be affected by aspects of the original that aren't fully understood, or could vary in "interesting" ways (e g because waving one's hand over the machine would affect the value seen by the CPU during an "open-bus
- Recently Active Questions - Page 40 - Retrocomputing Stack Exchange
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- How common was programming in C targeting 8-bit processors in 1983?
Related: Why do C to Z80 compilers produce poor code? - besides compilers back then being much less sophisticated at finding optimizations, some early machines were just not good C compiler targets, e g no stack, and or efficient memory addressing being static array + 8-bit offset, not efficiently supporting C pointers
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