mist: start adding for load-game support

mist/Makefile

@@ -44,7 +44,7 @@ LOADER: loader.o
 loader.o:	loader.s \
 	gr_copy.s gr_offsets.s gr_pageflip.s gr_putsprite_crop.s \
 	text_print.s gr_fast_clear.s decompress_fast_v2.s \
-	keyboard.s draw_pointer.s end_level.s audio.s
+	keyboard.s draw_pointer.s end_level.s audio.s loadstore.s
 	ca65 -o loader.o loader.s -l loader.lst
 
 ###

mist/TODO

@@ -4,6 +4,7 @@ For release 1.0
 	-- save/load games
 	-- sound loader
 + MIST (split off ship-up/ship-down?)
+	-- fix catherine letter (bg, grab from other side)
 	-- constellation puzzle/ship raising
 	-- marker switches
 + DENTIST

mist/common_routines.inc

@@ -35,17 +35,17 @@ put_sprite_crop	=$18a8
 
 ; keyboard.s
 handle_keypress	=$19e4
-change_location	=$1ab1
+change_location	=$1ac5
 
 ; text_print.s
-move_and_print	=$1b49
+move_and_print	=$1b5d
 
 ; page_sprites.inc
-blue_page_sprite	=$1c44
-red_page_sprite	=$1c90
-white_page_sprite	=$1ca6
-blue_page_small_sprite	=$1cbc
-red_page_small_sprite	=$1cc4
+blue_page_sprite	=$1cf4
+red_page_sprite	=$1d40
+white_page_sprite	=$1d56
+blue_page_small_sprite	=$1d6c
+red_page_small_sprite	=$1d74
 
 ; audio files
 linking_noise	= $9000

mist/hello.bas

@@ -1,8 +1,12 @@
 5 HOME
 10 PRINT "LOADING MIST V0.86"
 20 PRINT:PRINT
-40 PRINT "CONTROLS:  ARROWS OR WASD"
-50 PRINT "           ENTER MOVES/ACTION"
+40 PRINT "CONTROLS: "
+42 PRINT "     MOVE CURSOR    : ARROWS OR WASD"
+44 PRINT "     FORWARD/ACTION : ENTER"
+45 PRINT "     ENABLE JOYSTICK: CONTROL-J"
+46 PRINT "     LOAD GAME      : CONTROL-L"
+48 PRINT "     SAVE GAME      : CONTROL-S"
 60 PRINT:PRINT
 70 PRINT "BASED ON MYST BY CYAN INC"
 80 PRINT "APPLE II PORT: VINCE WEAVER"

mist/keyboard.s

@@ -12,6 +12,20 @@ handle_keypress:
 keypress:
 	and	#$7f			; clear high bit
 
+check_load:
+	cmp	#$C			; control-L
+	bne	check_save
+
+	jsr	load_game
+	jmp	done_keypress
+
+check_save:
+	cmp	#$13			; control-S
+	bne	check_left
+
+	jsr	save_game
+	jmp	done_keypress
+
 check_left:
 	cmp	#'A'
 	beq	left_pressed

mist/loader.s

@@ -731,6 +731,7 @@ sectbl:	.byte $00,$0d,$0b,$09,$07,$05,$03,$01,$0e,$0c,$0a,$08,$06,$04,$02,$0f
         .include        "gr_putsprite_crop.s"
         .include        "keyboard.s"
         .include        "text_print.s"
+	.include	"loadstore.s"
 
 	.include        "common_sprites.inc"
         .include        "page_sprites.inc"

mist/loadstore.s

@@ -0,0 +1,88 @@
+
+	;===================================
+	;===================================
+	; load the game
+	;===================================
+	;===================================
+
+load_game:
+	bit	KEYRESET	; clear keyboard buffer
+
+	bit	SET_TEXT	; set text mode
+
+	jsr	clear_all	; clear screen
+
+	lda	#<load_message
+	sta	OUTL
+	lda	#>load_message
+	sta	OUTH
+	jsr	move_and_print
+
+	lda	#<are_you_sure
+	sta	OUTL
+	lda	#>are_you_sure
+	sta	OUTH
+	jsr	move_and_print
+
+	jsr	page_flip
+
+wait_load_confirmation:
+	lda	KEYPRESS
+	bpl	wait_load_confirmation
+
+	bit	KEYRESET		; clear keypress
+
+	bit	SET_GR			; turn graphics back on
+
+	rts
+
+	;===================================
+	;===================================
+	; save the game
+	;===================================
+	;===================================
+
+save_game:
+	bit	KEYRESET	; clear keyboard buffer
+
+	bit	SET_TEXT	; set text mode
+
+	jsr	clear_all	; clear screen
+
+	lda	#<save_message
+	sta	OUTL
+	lda	#>save_message
+	sta	OUTH
+	jsr	move_and_print
+
+	lda	#<are_you_sure
+	sta	OUTL
+	lda	#>are_you_sure
+	sta	OUTH
+	jsr	move_and_print
+
+	jsr	page_flip
+
+wait_save_confirmation:
+	lda	KEYPRESS
+	bpl	wait_save_confirmation
+
+	bit	KEYRESET		; clear keypress
+
+	bit	SET_GR			; turn graphics back on
+
+	rts
+
+
+
+
+
+load_message:
+.byte  10,5,"LOAD GAME FROM DISK",0
+
+save_message:
+.byte  11,5,"SAVE GAME TO DISK",0
+
+are_you_sure:
+.byte  10,7,"ARE YOU SURE? (Y/N)",0
+

mist/mist_title.s

@@ -95,15 +95,6 @@ done_keyloop:
 	bit	LORES
 	bit	FULLGR
 
-	;=================
-	; set up location
-	;=================
-
-	lda	#<locations
-	sta	LOCATIONS_L
-	lda	#>locations
-	sta	LOCATIONS_H
-
 	lda	#0
 	sta	DRAW_PAGE