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- Aqua Demo created by John Enright on 3-13-94 at Bithead Technologies. This
- small demo was put together in one afternoon using graphics by Mike Alkan.
- Thanks Mike! Note that all graphics are Copyright (c) Mike Alkan, and are
- included with this package by permission. The graphics are for demo purposes
- only, and may not be included in other works.
-
- A few words about the demo:
-
- * Click either mouse button to exit.
-
- * The demo will automatically scroll left & right over a 12K (roughly) virtual
- space area. "Real space" is only just larger than the actual display.
- Objects in virtual space are not actually drawn by the animation system.
-
- * Move the joystick left or right to scroll faster. Press the button to hold
- the display still.
-
- * Because of the number of objects moving (or not moving in the case of coral)
- around in virtual space, a faster processor than the 68000 is recommended,
- as without it things can get a little sluggish.
-
- * Watch as creatures move in front of or behind the coral! Adds a sense of
- depth to the scene. This shows good use of object prioritization.
-
- * This is not a tilemap scroller, and because of this, you may see some flicker
- when the bitmap is wrapped. A properly set up tilemap scroller won't have
- this problem.
-
- * This is yet another good example of how to handle full frame rate scrolling
- regardless of how fast objects are moving on the screen. The interrupt
- driven scrolling routine could just as easily be used to keep a controllable
- character within certain screen bounds (see the MoonRocks demo by Alan Bland
- for an example of this technique). The scroller itself is quite a bit more
- complex than it would be under a tilemap system, as it tries to predict when
- the bitmap will need to be reset, and get rid of as much flicker as possible.
-
- If you would like to contact Mike Alkan, you may call him at (416) 481-5442.
- He lives in Canada. He is an excellent graphic artist (commercial quality, in
- my opinion).
-
- The source code for this demo is hereby placed in the public domain.
-
-
- -John Enright
-