Variables Reference - Shmupkit

Here's a full list of the Global Variables used by Shmupkit, I've tried to leave as many as possible free for you own use in your games.

VARIABLES USED BY SHMUPKIT
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 A - available for use in your code
 B - available for use in your code
 C - ENEMY COLOUR
 D - KILLS TO GET BONUS
 E - # ENEMIES IN WAVE
 F - ENEMIES LEFT
 G - ENEMY RELEASE DELAY
 H - ENEMY WEAPON FIRE PROBABILITY
 I - X DISTANCE FOR ENEMY WEAPON TRIGGERING
 J - ENEMY SPRITE TYPE
 K - ENEMY IMAGE
 L - LEVEL/WAVE
 M - PLAYER X FOR USE IN OTHER EVENTS
 N - PLAYER Y FOR USE IN OTHER EVENTS
 O - available for use in your code
 P - POINTS FOR A KILL
 Q - HEIGHT FOR ALIEN WEAPON RELEASE
 R - available for use in your code
 S - SPRITE COUNTER
 T - TRIGGER
 U - available for use in your code
 V - available for use in your code
 W - ENEMY WEAPON
 Z - MUSIC (reserved)