Last modified on 3 December 2012, at 13:49

Mission Genocide

Revision as of 13:49, 3 December 2012 by Db6128 (Talk | contribs) (Adding programmer, link to interview, alternative title, info on relatively famous graphical tricks, etc.)

Mission Genocide
Titlescreen of the game
Developer Paul Shirley
Company Firebird
Publisher Firebird
Musician Unknown
Release 1987
Platform(s) CPC
Genre Shoot'Em Up
OS
Game Modes Unknown
Controls Keyboard Joystick
Media disk Cassette
Language Language:english
Information Unknown

Mission Genocide, alternatively titled ZTB (for Zap the Bastards and later Badstars [1]) on the loading screen and elsewhere, is a game for the old generation of CPCs, released on both tape and disc and compatible with all models.

The game is mentioned fairly often for its smooth and pixel-perfect vertical scrolling, which is done in hardware using the CRTC. It is also notable in using a very fast method of plotting sprites, which takes advantage of the 16 colours of graphical Mode 0 by using 3 for sprites, Ink 0 for transparency, and the remaining 12 as 3 duplicate sets of 4 colours for the background: the roles of these Inks are arranged according to binary logic so that sprites can be ORd onto the background and ANDed to remove them, a method that is much faster and more memory-efficient than storing a sprite and a masking table and then performing all the relevant masking operations between these and the background.

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Tape

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