sb: add projectile

games/sb/asplode.s

@@ -105,6 +105,11 @@ load_background:
 	sta	SHIELD_POSITION
 	sta	SHIELD_COUNT
 
+	lda	#20
+	sta	BULLET_X
+	lda	#90
+	sta	BULLET_Y
+
 	;==========================
 	; main loop
 	;===========================
@@ -197,6 +202,36 @@ no_move_head:
 	sta	SPRITE_Y
 	jsr	hgr_draw_sprite_big
 
+	;==========================
+	; move bullet
+	;===========================
+
+	inc	BULLET_Y
+	lda	BULLET_Y
+	cmp	#150
+	bcc	bullet_still_good
+
+	; new bullet position
+	; FIXME: better
+
+	lda	#90
+	sta	BULLET_Y
+bullet_still_good:
+
+	;==========================
+	; draw bullet
+	;===========================
+
+	lda	#<bullet0_sprite
+	sta	INL
+	lda	#>bullet0_sprite
+	sta	INH
+	lda	BULLET_X
+	sta	SPRITE_X
+	lda	BULLET_Y
+	sta	SPRITE_Y
+	jsr	hgr_draw_sprite_big
+
 	;==========================
 	; draw player
 	;===========================

games/sb/asplode_graphics/Makefile

@@ -37,6 +37,8 @@ sb_sprites.inc:	sb_sprites.png
 	$(HGR_SPRITE) -s -l shield_left_sprite sb_sprites.png 0 138 83 192 >> sb_sprites.inc
 	$(HGR_SPRITE) -s -l shield_center_sprite sb_sprites.png 196 83 279 137 >> sb_sprites.inc
 	$(HGR_SPRITE) -s -l shield_right_sprite sb_sprites.png 196 138 279 192 >> sb_sprites.inc
+	$(HGR_SPRITE) -s -l bullet0_sprite sb_sprites.png 210 9 223 14 >> sb_sprites.inc
+
 
 
 

games/sb/zp.inc

@@ -71,6 +71,8 @@ SHIELD_POSITION = $6E
 	SHIELD_UP_CENTER = 2
 	SHIELD_UP_RIGHT = 3
 SHIELD_COUNT	= $6F
+BULLET_X	= $70
+BULLET_Y	= $71
 
 .if 0
 REGISTER_DUMP	= $70