duke: make buzzer noise if not have key

duke/TODO

@@ -1,26 +1,21 @@
-door
-~~~~
-door animation
-sad noise when not have key
-key in inventory
-key pickup noise
-* NO BONUS message
-* back to title screen
-* are you sure message on quit
-* scroll bonus message
+before release:
+~~~~~~~~~~~~~~~
++ laser collision detection
++ enemies can be killed
++ pick up red key
++ fix collision when walking into things
 
 sound:
 ~~~~~~
 click on jump
 click on bump head
 fancier PC-style sounds
+sad noise when not have key
+
 
 movement:
 ~~~~~~~~~
-* collision detection up (hit head on jump)
-* when land from jump, stop walking
 walking right into objects, stand back one more (maybe and to mask?)
-* can keep walking in collision, just don't move
 
 level1:
 ~~~~~~~
@@ -39,18 +34,13 @@ levels:
 ~~~~~~~
 mystery level 2
 
-status:
-~~~~~~~
-keep score, inventory
-
 sprites:
 ~~~~~~~~
 When land, kicks up dust
 
 enemies:
 ~~~~~~~~
-Little robot
-green crawly
+have them move
 ability to die
 
 items:

duke/actions.s

@@ -48,11 +48,15 @@ redkey_x:
 	; check that we have the key
 	lda	INVENTORY
 	and	#INV_RED_KEY
-	beq	done_up_action
+	bne	open_the_wall
+
+no_red_key:
+	jsr	buzzer_noise
+	jmp	done_up_action
 
 	; open the red wall
 	; there has to be a more efficient way of doing this
-
+open_the_wall:
 	; reset smc
 	lda	#>BIG_TILEMAP
 	sta	rwr_smc1+2

duke/sound_effects.s

@@ -81,4 +81,23 @@ done_pickup_noise:
 	rts
 
 
+	;======================
+	; buzzer noise
+	;    C, two octaves+C?
+buzzer_noise:
+
+	lda	SOUND_STATUS
+	bmi	done_buzzer_noise
+
+	lda	#NOTE_C3
+	sta	speaker_frequency
+	lda	#10
+	sta	speaker_duration
+	jsr	speaker_tone
+
+done_buzzer_noise:
+	rts
+
+
+