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Adds priority and alpha comments, as per Guru's request.

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Documents various priority issues as being original game bugs, and makes note of a missing alpha effect.

These notes will likely live in a new bug database someday, but were added to the driver so they won't be lost in the short term.

If it's whatsnew worthy, credit Guru for his time spent testing.
This commit is contained in:
Andrew Gardner 2008-01-20 19:57:26 +00:00
parent ccccc9c2e3
commit 50f7b75476
1 changed files with 21 additions and 4 deletions
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25
src/mame/drivers/boogwing.c
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@ -51,10 +51,27 @@
Driver by Bryan McPhail and David Haywood.
Todo:
Sprite priorities aren't verified to be 100% accurate.
There may be some kind of fullscreen palette effect (controlled by bit 3 in priority
word - used at end of each level, and on final boss).
A shadow effect (used in level 1) is not implemented.
* Sprite priorities aren't verified to be 100% accurate.
(Addendum - all known issues seem to be correct - see Sprite Priority Notes below).
* There may be some kind of fullscreen palette effect (controlled by bit 3 in priority
word - used at end of each level, and on final boss).
* A shadow effect (used in level 1) is not implemented.
Sprite Priority Notes:
* On the Imperial Science Museum level at the beginning, you fly behind a wall, but your
shots go in front of it. This is verified to be correct behavior by Guru.
* There's a level where the player passes through several columns in a building and the
player goes behind every 2nd one. That is correct as well.
* There is a fire hydrant with an odd-looking spray of water on various levels.
If you drop the hydrant in front of an enemy (a tank, for example), the priorities are
wrong. This is actual PCB behavior. Also, the strange-looking water spray is correct.
Alpha Blend Note:
* There are semi-transparent round spots around your plane while fighting the final boss.
These are correct.
* The final boss shoots a blue beam downwards during the battle. This should have alpha.
It fades in to blue, then fades out to nothing again after a few seconds (Guru).
(Potentially related to note above about bit 3 in priority word)
*/
#include "driver.h"