duke: have status bar actually update

not sure why I bother as you can't do anything that affects this yet

duke/TODO

@@ -1,24 +1,34 @@
-collision detection left/right
+sound:
+~~~~~~
+click on jump
+click on bump head
+fancier PC-style sounds
+
+movement:
+~~~~~~~~~
 collision detection up (hit head on jump)
-	only calculate position once
 only jump if feet on ground
-speed up walking again
+when land from jump, stop walking
 jump slightly higher?
 
-
-hook up title screen
-
+levels:
+~~~~~~~
 mystery level 2
 
-more complete map
-
-status: keep score, proper laser count
+status:
+~~~~~~~
+keep score, proper laser count
 
+sprites:
+~~~~~~~~
 Different sprites for left, right, shooting
 When land, kicks up dust
 
-Enemy?  Little robot, green crawly
+enemies:
+~~~~~~~~
+Little robot
+green crawly
 
-Sound effects?
-
-Pick up items?  red key inverse-R
+items:
+~~~~~~
+red/blue key inverse-R

duke/duke.s

@@ -38,6 +38,21 @@ duke_start:
 	sta	LEVEL_OVER
 	sta	LASER_OUT
 	sta	DUKE_XL
+	sta	SCORE1
+	sta	SCORE2
+	sta	INVENTORY
+
+	lda	#$10
+	sta	SCORE0
+
+	lda	#1
+	sta	FIREPOWER
+
+	lda	#2			; draw twice (both pages)
+	sta	UPDATE_STATUS
+
+	lda	#7
+	sta	HEALTH
 
 	lda	#4
 	sta	DRAW_PAGE
@@ -50,6 +65,8 @@ duke_start:
 	sta	DUKE_DIRECTION
 
 
+	jsr	update_status_bar
+
 	;====================================
 	; load level1 background
 	;====================================

duke/status_bar.s

@@ -1,23 +1,128 @@
 ; Draw Status Bar
 
-update_status_bar:
+	;===========================
+	; inc_score_by_10
+	;===========================
+	; FIXME: make sure interrupt routine handles d flag properly
+inc_score_by_10:
+
+	sed
+	lda	SCORE0
+	clc
+	adc	#$10
+	sta	SCORE0
+
+	lda	SCORE1
+	adc	#0
+	sta	SCORE1
+
+	lda	SCORE2
+	adc	#0
+	sta	SCORE2
+	cld
+
+	jsr	update_score
+
 	rts
 
+	;===========================
+	; update score
+	;===========================
+
+update_score:
+
+	lda	SCORE0
+	and	#$f
+	ora	#$b0		; 0 -> $b0
+	sta	status_string+6
+
+	lda	SCORE0
+	lsr
+	lsr
+	lsr
+	lsr
+	ora	#$b0		; 0 -> $b0
+	sta	status_string+5
+
+	lda	SCORE1
+	and	#$f
+	ora	#$b0		; 0 -> $b0
+	sta	status_string+4
+
+	lda	SCORE1
+	lsr
+	lsr
+	lsr
+	lsr
+	ora	#$b0		; 0 -> $b0
+	sta	status_string+3
+
+	lda	SCORE2
+	and	#$f
+	ora	#$b0		; 0 -> $b0
+	sta	status_string+2
+
+	lda	#2
+	sta	UPDATE_STATUS
+
+	rts
+
+
+	;===========================
+	; update health
+	;===========================
+
+update_health:
+
+	ldx	#0
+update_health_loop:
+	cpx	HEALTH
+	bcc	health_on
+	lda	#'_'|$80
+	bne	done_health
+health_on:
+	lda	#' '
+done_health:
+	sta	status_string+9,X
+
+	inx
+	cpx	#8
+	bne	update_health_loop
+
+	rts
+
+
+
+	;===========================
+	; update the status bar
+	;===========================
+update_status_bar:
+
+	jsr	update_score
+
+	jsr	update_health
+
+	rts
+
+	;===========================
+	; draw the status bar
+	;===========================
 draw_status_bar:
 
-	jsr	inverse_text
+	; to improve frame rate, only draw if update status set?
+	; not implemented yet
+
+	jsr	inverse_text	; print help node
 	lda	#<help_string
 	sta	OUTL
 	lda	#>help_string
 	sta	OUTH
 	jsr	move_and_print
-	jsr	normal_text
-	jsr	move_and_print
-	jsr	move_and_print
-
-	jsr	inverse_text
-	jsr	move_and_print
 
+	jsr	normal_text	; (normal)
+	jsr	move_and_print	; print explain text
+	jsr	raw_text
+	jsr	move_and_print	; print status line
 	rts
 
 
@@ -27,5 +132,12 @@ help_string:
 score_string:
 	;           012456789012345678901234567890123456789
 	.byte 0,22,"SCORE   HEALTH   FIREPOWER    INVENTORY",0
-	.byte 0,23,"00010  XXXXXXXX  =-=-                  ",0
-	.byte 7,23,"        ",0
+status_string:
+;	.byte 0,23,"ZZZZZ  XXXXXXXX  =-                    ",0
+	.byte 0,23,"ZZZZZ"
+	.byte ' '|$80,' '|$80
+	.byte "XXXXXXXX"
+	.byte ' '|$80,' '|$80
+	.byte '='|$80,'-'|$80,' '|$80,' '|$80,' '|$80,' '|$80,' '|$80,' '|$80,' '|$80,' '|$80
+	.byte ' '|$80,' '|$80,' '|$80,' '|$80,' '|$80,' '|$80,' '|$80,' '|$80,' '|$80,' '|$80,' '|$80,' '|$80,0
+

duke/text_print.s

@@ -29,6 +29,23 @@ inverse_text:
 	rts
 
 
+	;=============================
+	; raw text
+	;=============================
+	; modify so print raw string
+raw_text:
+
+	; want nop nop
+	lda	#$EA
+	sta	ps_smc1
+
+	lda	#$EA
+	sta	ps_smc1+1
+
+	rts
+
+
+
 	;================================
 	; move_and_print
 	;================================

duke/zp.inc

@@ -95,6 +95,18 @@ TILEMAP_Y		= $8C
 
 DUKE_FOOT_OFFSET	= $8D
 
+FIREPOWER		= $8E
+INVENTORY		= $8F
+	INV_RED_KEY		= $80
+	INV_BLUE_KEY		= $20
+	INV_SHOE		= $08
+	INV_GRIP		= $02
+HEALTH			= $90
+SCORE0			= $91
+SCORE1			= $92
+SCORE2			= $93
+UPDATE_STATUS		= $94
+
 ; done game puzzle state