mist: update some things to improve joystick support

works Ok on emulator, need to test on actual hardware again

mist/README

@@ -1,8 +1,11 @@
 MIST -- a reimplementation of MYST from scratch for Apple II computers
+======================================================================
 
-
++ works best on II+/IIe
++ should run on IIc/IIgs though not as well tested
 
 Compiling:
+==========
 	This is a bit tricky
 	First you'll need to install the cc65 package
 		https://github.com/cc65/cc65
@@ -14,6 +17,9 @@ Compiling:
 	Then run "make" and hope for the best
 
 
+Notes on Filesize
+=================
+
 Load times of ~8k DENTIST:		MIST ~40k
 	DOS33:		7s		TOO-BIG
 	PRODOS:

mist/common_routines.inc

@@ -35,17 +35,17 @@ psc_smc2	=$199c
 
 ; keyboard.s
 handle_keypress	=$199c
-change_direction	=$1aa7
+change_direction	=$1ad5
-change_location	=$1ada
+change_location	=$1b08
 
 ; text_print.s
-move_and_print	=$1b72
+move_and_print	=$1ba0
-ps_smc1	=$1b9f
+ps_smc1	=$1bcd
 
 ; page_sprites.inc
-blue_page_sprite	=$1cee
+blue_page_sprite	=$1d1c
-red_page_sprite	=$1d04
+red_page_sprite	=$1d32
-white_page_sprite	=$1d1a
+white_page_sprite	=$1d48
-blue_page_small_sprite	=$1d30
+blue_page_small_sprite	=$1d5e
-red_page_small_sprite	=$1d38
+red_page_small_sprite	=$1d66
 

mist/keyboard.s

@@ -8,6 +8,11 @@ handle_keypress:
 	lda	JOYSTICK_ENABLED
 	beq	actually_handle_keypress
 
+	; only check joystick every-other frame
+	lda	FRAMEL
+	and	#$1
+	beq	actually_handle_keypress
+
 check_button:
         lda     PADDLE_BUTTON0
         bpl     button_clear
@@ -111,7 +116,14 @@ check_left:
 	cmp	#8			; left key
 	bne	check_right
 left_pressed:
+	lda	CURSOR_X		; if 41<x<$FB don't decrement
+	cmp	#41
+	bcc	do_dec_cursor_x
+	cmp	#$FB
+	bcc	done_left_pressed
+do_dec_cursor_x:
 	dec	CURSOR_X
+done_left_pressed:
 	jmp	done_keypress
 
 check_right:
@@ -120,7 +132,14 @@ check_right:
 	cmp	#$15			; right key
 	bne	check_up
 right_pressed:
+	lda	CURSOR_X		; if 40<x<$FA don't increment
+	cmp	#40
+	bcc	do_inc_cursor_x
+	cmp	#$FA
+	bcc	done_right_pressed
+do_inc_cursor_x:
 	inc	CURSOR_X
+done_right_pressed:
 	jmp	done_keypress
 
 check_up:
@@ -129,8 +148,15 @@ 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
+done_up_pressed:
 	jmp	done_keypress
 
 check_down:
@@ -139,8 +165,15 @@ check_down:
 	cmp	#$0A
 	bne	check_return
 down_pressed:
+	lda	CURSOR_Y		; if 48<y<$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
 
 check_return:

mist/text_title.s

@@ -35,12 +35,12 @@ text_loop:
 
 	rts
 
-
+;             0123456789012345678901234567890123456789
 boot_message:
-.byte	0,0, "LOADING MIST V1.0",0
+.byte	0,0, "LOADING MIST V1.01",0
 .byte	0,3, "CONTROLS:",0
 .byte	5,4, "MOVE CURSOR    : ARROWS OR WASD",0
-.byte	5,5, "FORWARD/ACTION : ENTER",0
+.byte	5,5, "FORWARD/ACTION : RETURN OR SPACE",0
 .byte	5,7, "ENABLE JOYSTICK: J",0
 .byte	5,8, "LOAD GAME      : CONTROL-L",0
 .byte	5,9, "SAVE           : CONTROL-S",0