From 296a58304861d08eaa9fed0cba75b76fd3ed5dc8 Mon Sep 17 00:00:00 2001
From: Vince Weaver <vince@deater.net>
Date: Wed, 16 Dec 2020 09:54:12 -0500
Subject: [PATCH] duke: working on key actions

---
 duke/Makefile   |  2 +-
 duke/actions.s  | 54 +++++++++++++++++++++++++++++++++++++++++++++++++
 duke/duke.s     |  1 +
 duke/keyboard.s | 20 ++++--------------
 duke/zp.inc     |  4 ++--
 5 files changed, 62 insertions(+), 19 deletions(-)
 create mode 100644 duke/actions.s

diff --git a/duke/Makefile b/duke/Makefile
index 671e94ca..a072de2b 100644
--- a/duke/Makefile
+++ b/duke/Makefile
@@ -43,7 +43,7 @@ DUKE:	duke.o
 
 duke.o:	duke.s zp.inc hardware.inc duke.s \
 	print_help.s gr_fast_clear.s quit_yn.s text_drawbox.s level_end.s \
-	enemies.s \
+	enemies.s actions.s \
 	graphics/duke_graphics.inc \
 	maps/level1_map.lzsa \
 	status_bar.s draw_duke.s move_duke.s gr_putsprite_crop.s \
diff --git a/duke/actions.s b/duke/actions.s
new file mode 100644
index 00000000..999835d7
--- /dev/null
+++ b/duke/actions.s
@@ -0,0 +1,54 @@
+
+	; someone pressed UP
+
+up_action:
+
+	; check if it's a key slot
+check_red_keyhole:
+
+	; check that we have the key
+	lda	INVENTORY
+	and	#INV_RED_KEY
+	beq	done_up_action
+
+	; open the red wall
+	; there has to be a more efficient way of doing this
+
+	; reset smc
+	lda	#>BIG_TILEMAP
+	sta	rwr_smc1+2
+	sta	rwr_smc2+2
+
+remove_red_wall_outer:
+	ldx	#0
+remove_red_wall_loop:
+rwr_smc1:
+	lda	BIG_TILEMAP,X
+	cmp	#49			; red key tile
+	bne	not_red_tile
+	lda	#2			; lblue bg tile
+rwr_smc2:
+	sta	BIG_TILEMAP,X
+not_red_tile:
+	inx
+	bne	remove_red_wall_loop
+
+	inc	rwr_smc1+2
+	inc	rwr_smc2+2
+
+	lda	rwr_smc1+2
+	cmp	#(>BIG_TILEMAP)+40
+	bne	remove_red_wall_outer
+
+	; refresh local tilemap
+
+	jsr	copy_tilemap_subset
+
+
+	; check if it's the exit
+check_if_exit:
+
+
+done_up_action:
+
+	rts
diff --git a/duke/duke.s b/duke/duke.s
index 81c858c5..a3c2a331 100644
--- a/duke/duke.s
+++ b/duke/duke.s
@@ -220,6 +220,7 @@ done_with_duke:
 	.include	"handle_laser.s"
 	.include	"draw_tilemap.s"
 	.include	"enemies.s"
+	.include	"actions.s"
 
 	.include	"sound_effects.s"
 
diff --git a/duke/keyboard.s b/duke/keyboard.s
index 90c07065..4d56beeb 100644
--- a/duke/keyboard.s
+++ b/duke/keyboard.s
@@ -156,14 +156,9 @@ check_up:
 	cmp	#$0B			; up key
 	bne	check_down
 up_pressed:
-	lda	CURSOR_Y		; if 49<y<$F0 don't decrement
-	cmp	#49
-	bcc	do_dec_cursor_y
-	cmp	#$F0
-	bcc	done_up_pressed
-do_dec_cursor_y:
-	dec	CURSOR_Y
-	dec	CURSOR_Y
+
+	jsr	up_action
+
 done_up_pressed:
 	jmp	done_keypress
 
@@ -173,14 +168,7 @@ check_down:
 	cmp	#$0A
 	bne	check_space
 down_pressed:
-	lda	CURSOR_Y		; if 48<y<$EE don't decrement
-	cmp	#48
-	bcc	do_inc_cursor_y
-	cmp	#$EE
-	bcc	done_down_pressed
-do_inc_cursor_y:
-	inc	CURSOR_Y
-	inc	CURSOR_Y
+
 done_down_pressed:
 	jmp	done_keypress
 
diff --git a/duke/zp.inc b/duke/zp.inc
index 2241dbd7..cc1792fa 100644
--- a/duke/zp.inc
+++ b/duke/zp.inc
@@ -32,8 +32,8 @@ XMAX	= $50
 
 FRAMEL			= $60
 FRAMEH			= $61
-CURSOR_X		= $62
-CURSOR_Y		= $63
+;CURSOR_X		= $62
+;CURSOR_Y		= $63
 XPOS			= $64
 YPOS			= $65
 LOCATION_STRUCT_L	= $66