dos33fsprogs/fireworks/state_machine.s

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;=================================
; action_stars
;=================================
; and take 4504 cycles to do it
; we take 4501, so waste 3
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action_stars:
jsr draw_stars ; 6+4492 = 4498
ldy FRAME ;nop ; 3
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jmp check_keyboard ; 3
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;=================================
; action_launch_firework
;=================================
; and take 4504 cycles to do it
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; we take 423 so waste 4081
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action_launch_firework:
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; Try X=26 Y=30 cycles=4081
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ldy #30 ; 2
Xloop1: ldx #26 ; 2
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Xloop2: dex ; 2
bne Xloop2 ; 2nt/3
dey ; 2
bne Xloop1 ; 2nt/3
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jsr launch_firework ; 6+414 = 420
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jmp check_keyboard ; 3
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;=================================
; action_move_rocket
;=================================
; and take 4504 cycles to do it
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; we take 1245 so waste 3259
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action_move_rocket:
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; Try X=35 Y=18 cycles=3259
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ldy #18 ; 2
Yloop1: ldx #35 ; 2
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Yloop2: dex ; 2
bne Yloop2 ; 2nt/3
dey ; 2
bne Yloop1 ; 2nt/3
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jsr move_rocket ; 6+1236 = 1242
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jmp check_keyboard ; 3
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;=================================
; action_start_explosion
;=================================
; and take 4504 cycles to do it
; we take 449 so waste 4055
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action_start_explosion:
; Try X=15 Y=50 cycles=4051 R4
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nop
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nop
ldy #50 ; 2
Zloop1: ldx #15 ; 2
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Zloop2: dex ; 2
bne Zloop2 ; 2nt/3
dey ; 2
bne Zloop1 ; 2nt/3
jsr start_explosion ; 6+440 = 446
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jmp check_keyboard ; 3
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;=================================
; action_continue_explosion
;=================================
; and take 4504 cycles to do it
; we take 4495 so waste 9
action_continue_explosion:
lda STATE ; nop 3
lda STATE ; nop 3
lda STATE ; nop 3
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jsr continue_explosion ; 6+4486 = 4492
jmp check_keyboard ; 3
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;=================================
; action_stall_rocket
;=================================
; and take 4504 cycles to do it
; 4504 - 8 = 4496
action_stall_rocket:
lda #STATE_MOVE_ROCKET ; 2
sta STATE ; 3
; Try X=12 Y=68 cycles=4489 R7
nop ;
nop ;
lda STATE ;3
ldy #68 ; 2
Bloop1: ldx #12 ; 2
Bloop2: dex ; 2
bne Bloop2 ; 2nt/3
dey ; 2
bne Bloop1 ; 2nt/3
jmp check_keyboard ; 3