fireworks: split off state machine

fireworks/Makefile

@@ -17,7 +17,7 @@ FIREWORKS:	fireworks.o
 	ld65 -o FIREWORKS fireworks.o -C ../linker_scripts/apple2_1000.inc
 
 fireworks.o:	fireworks.s gr_copy.s random16.s fw.s hgr.s \
-		vapor_lock.s gr_hline.s \
+		vapor_lock.s gr_hline.s state_machine.s \
 		background_final.inc
 	ca65 -o fireworks.o fireworks.s -l fireworks.lst
 

fireworks/fireworks.s

@@ -253,57 +253,7 @@ loop_forever:
 	jmp	loop_forever
 
 
-	;=================================
-	; do nothing
-	;=================================
-	; and take 4533-6 = 4527 cycles to do it
-do_nothing:
-
-	; Try X=4 Y=174 cycles=4525 R2
-
-	nop	; 2
-
-	ldy	#174							; 2
-loop1:
-	ldx	#4							; 2
-loop2:
-	dex								; 2
-	bne	loop2							; 2nt/3
-
-	dey								; 2
-	bne	loop1							; 2nt/3
-
-
-	rts							; 6
-
-
-	;=================================
-	; action_stars
-	;=================================
-	; and take 4533-6 = 4527 cycles to do it
-action_stars:
-
-	jsr	draw_stars			; 6+4492 = 4498
-						; 4527 - 4498 = 29
-
-	; Try X=4 Y=1 cycles=27 R2
-
-	nop
-
-	ldy	#1							; 2
-bloop1:
-	ldx	#4							; 2
-bloop2:
-	dex								; 2
-	bne	bloop2							; 2nt/3
-
-	dey								; 2
-	bne	bloop1							; 2nt/3
-
-
-	rts							; 6
-
-
+.include "state_machine.s"
 .include "gr_hline.s"
 .include "../asm_routines/gr_unrle.s"
 .include "../asm_routines/keypress.s"
@@ -316,5 +266,3 @@ bloop2:
 background:
 
 .include "background_final.inc"
-
-

fireworks/state_machine.s

@@ -0,0 +1,49 @@
+	;=================================
+	; do nothing
+	;=================================
+	; and take 4533-6 = 4527 cycles to do it
+do_nothing:
+
+	; Try X=4 Y=174 cycles=4525 R2
+
+	nop	; 2
+
+	ldy	#174							; 2
+loop1:
+	ldx	#4							; 2
+loop2:
+	dex								; 2
+	bne	loop2							; 2nt/3
+
+	dey								; 2
+	bne	loop1							; 2nt/3
+
+
+	rts							; 6
+
+
+	;=================================
+	; action_stars
+	;=================================
+	; and take 4533-6 = 4527 cycles to do it
+action_stars:
+
+	jsr	draw_stars			; 6+4492 = 4498
+						; 4527 - 4498 = 29
+
+	; Try X=4 Y=1 cycles=27 R2
+
+	nop
+
+	ldy	#1							; 2
+bloop1:
+	ldx	#4							; 2
+bloop2:
+	dex								; 2
+	bne	bloop2							; 2nt/3
+
+	dey								; 2
+	bne	bloop1							; 2nt/3
+
+
+	rts							; 6