sb: get background pulsing

games/sb/asplode.s

@@ -134,24 +134,32 @@ title_cycle_loop:
 	;===================
 
 	;==========================
-	; Load Background
+	; Load Backgrounds
 	;===========================
+	; this is tricky as there's not enough room
+	; so we are over-writing stuff carefully
 
-load_background:
+load_backgrounds:
 
-	; size in ldsizeh:ldsizel (f1/f0)
-
-	lda	#<comp_data
+	lda	#<bg2_data
 	sta	ZX0_src
-	lda	#>comp_data
+	lda	#>bg2_data
 	sta	ZX0_src+1
 
-
 	lda	#$A0
 
+	jsr	full_decomp
+
+	lda	#<bg1_data
+	sta	ZX0_src
+	lda	#>bg1_data
+	sta	ZX0_src+1
+
+	lda	#$80
 
 	jsr	full_decomp
 
+
 	;===================
 	; set up variables
 
@@ -186,7 +194,7 @@ load_background:
 title_data:
 	.incbin "asplode_graphics/sb_title.hgr.zx02"
 
-comp_data:
+bg1_data:
 	.incbin "asplode_graphics/sb_zone.hgr.zx02"
 
 sound_data:
@@ -208,6 +216,16 @@ main_loop:
 	; copy over background
 	;========================
 reset_loop:
+
+	lda	FRAME
+	and	#$2
+	beq	odd_bg
+even_bg:
+	lda	#$A0
+	bne	do_bg
+odd_bg:
+	lda	#$80
+do_bg:
 	jsr	hgr_copy
 
 
@@ -790,3 +808,6 @@ bullet_vals_center:
 ; 31= 139
 
 ; 9,5 -> 22,14 = 12x9 roughly.  3 times smaller, 4x3?  2x6?
+
+bg2_data:
+	.incbin "asplode_graphics/sb_zone2.hgr.zx02"

games/sb/asplode_graphics/Makefile

@@ -10,7 +10,19 @@ PNG2GR = ../../../utils/gr-utils/png2gr
 PNG2SPRITES = ../../../utils/gr-utils/png2sprites
 HGR_SPRITE = ../../../utils/hgr-utils/hgr_make_sprite
 
-all:	sb_zone.hgr.zx02 sb_title.hgr.zx02 sb_sprites.inc
+all:	sb_zone.hgr.zx02 sb_zone2.hgr.zx02 \
+	sb_combined.hgr.zx02 \
+	sb_title.hgr.zx02 sb_sprites.inc
+
+####
+
+sb_combined.hgr.zx02:	sb_zone.hgr sb_zone2.hgr
+	cat sb_zone.hgr > sb_combined.hgr
+	cat sb_zone2.hgr >> sb_combined.hgr
+	$(ZX02) sb_combined.hgr sb_combined.hgr.zx02
+
+sb_zone.hgr:	sb_zone.png
+	$(PNG_TO_HGR) sb_zone.png > sb_zone.hgr
 
 ####
 
@@ -22,6 +34,15 @@ sb_zone.hgr:	sb_zone.png
 
 ####
 
+sb_zone2.hgr.zx02:	sb_zone2.hgr
+	$(ZX02) sb_zone2.hgr sb_zone2.hgr.zx02
+
+sb_zone2.hgr:	sb_zone2.png
+	$(PNG_TO_HGR) sb_zone2.png > sb_zone2.hgr
+
+
+####
+
 sb_title.hgr.zx02:	sb_title.hgr
 	$(ZX02) sb_title.hgr sb_title.hgr.zx02
 

games/sb/asplode_head.s

@@ -20,6 +20,7 @@ asplode_loop:
 	; copy background
 	;===================
 
+	lda	#$a0
 	jsr	hgr_copy
 
 	;==========================

games/sb/hgr_copy_fast.s

@@ -1,25 +1,34 @@
+	; special case
 	;=========================================================
-	; hgr copy from $2000 to $4000
+	; hgr copy from $A000/$8000 to current DRAW_PAGE
 	;=========================================================
-	; copy $2000 to $4000
 
 	; would be faster if we unroll it, but much bigger
 
+	; old numbers
+
 	; 14+ ((14*256)+20)*32 + 5 = 115347 = 8.6fps
 
 	; theoretical unrolled, 30*6 bytes bigger (180 bytes?)
 	; 2 + ((9*32)+5)*256 + 5 = 75015 = 13.3 fps
 
 hgr_copy:
+	; copy from in A ($80/$A0)
+
+	sta	hgr_copy_smc+2			; 4
+	clc
+	adc	#$20
+	sta	hgr_copy_end_smc+1
+
+;	lda	#$A0				; 2
 
 	ldx	#0				; 2
-	lda	#$A0				; 2
-	sta	hgr_copy_smc+2			; 4
+
+
 
 	lda	DRAW_PAGE
 	clc
 	adc	#$20
-;	lda	#$20				; 2
 	sta	hgr_copy_smc+5			; 4
 
 hgr_copy_column:
@@ -37,6 +46,7 @@ hgr_copy_smc:
 	inc	hgr_copy_smc+5			; 6
 
 	lda	hgr_copy_smc+2			; 4
+hgr_copy_end_smc:
 	cmp	#$C0				; 2
 	bne	hgr_copy_column			; 2/3
 

games/sb/qload.s

@@ -185,7 +185,7 @@ sector_array:
 
 
 length_array:
-        .byte  40, 16, 16, 64	; TITLE,  DUCK,  ROOF, ASPLODE
+        .byte  40, 16, 16, 70	; TITLE,  DUCK,  ROOF, ASPLODE
 	.byte  32, 32, 32	; TARGET, CLIFF, RAT