Hi everyone,
I'm doing some cleanup of the difficulty settings in the highscore.com database, aided by some fellow AtariAge members.
When reviewing the Dragonfire manual, it makes no mention of the use of difficulty switches, so we assumed (at first) that his meant that the difficulty switches have no effect on this game.
However, if you look at the scores on the game with difficulty set to A and B, there is an obvious difference:
Dragonfire (Atari 2600 Expert/A)
4,300 killersquirel <<
2,930 Serious
2,810 S.BAZ <<
Dragonfire (Atari 2600 Novice/B)
8,780 killersquirel <<
7,280 heywoodfloyd
4,300 S.BAZ <<
So, two of the same players scored almost twice as much in difficulty mode B than mode A.
I took a look through the source code, and found this:
;
; DELTA FIREBALLS
;
LDA FPCTL ; DO FIREBALL SPEED WITH WAVENO E DIFF
ASL ; SHIFT DIFFICULTY TO CARRY
LDX PLAYNO
BNE SKIP34
ASL
SKIP34
LDY WAVENO
LDA #0
ADC FBSPEEDS,Y
STA T0
LDX #NUP0S-1
DEFBLOOP LDA P0YS,X
CMP #DEAD
BEQ NEXT05
ADC T0 ; FIREBALL SPEED
IF PAL
CMP #$95+15
ELSE
CMP #$95
ENDIF
BCC OKXX
LDA #DEAD
OKXX
SKIP18 STA P0YS,X
NEXT05 DEX
BPL DEFBLOOP
Without understanding the routine here, based on the comments, it appears to me that the fireball speed may be different based on the difficulty settings.
I would appreciate any insight from someone who can decipher the source, or who knows the game better than I do.