From 0ebe54035c69bf4688b80f12966dcfd77177b764 Mon Sep 17 00:00:00 2001
From: Lukas Krickl <lukas@krickl.dev>
Date: Mon, 15 Sep 2025 21:12:58 +0200
Subject: [PATCH] audio: Added walk and door open sound

---
 src/audio.s  | 28 +++++++++++++++++++++-------
 src/hw.inc   |  2 +-
 src/player.s |  1 +
 src/unit.s   |  9 ++++++++-
 4 files changed, 31 insertions(+), 9 deletions(-)

diff --git a/src/audio.s b/src/audio.s
index 63ed705..3bd4d0c 100644
--- a/src/audio.s
+++ b/src/audio.s
@@ -5,18 +5,32 @@ audio_init:
 
   ; plays a random placeholder noise 
   ; on channel 4
-play_noise:
+play_walk_noise:
+  ld a, 0b11111111 
+  ld [CH4_VOLUME_ENV], a
+
+  ld a, 1 
+  ld [CH4_LENGTH], a
+	
+	ld a, 0b11000000 
+  ld [CH4_FREQ_RAND], a
+
+	ld a, 0b11000000
+	ld [CH4_CTRL], a
+
   ret
 
-  ; TODO: fix walk noise
-  ld a, 0b11100111 
+play_door_open_noise:
+  ld a, 0b11111111 
   ld [CH4_VOLUME_ENV], a
 
-  ld a, 2
+  ld a, 1 
   ld [CH4_LENGTH], a
+	
+	ld a, 0b1000011 
+  ld [CH4_FREQ_RAND], a
 
-  ld a, 0b11000000
-  ld [CH4_CTRL], a
+	ld a, 0b11000000
+	ld [CH4_CTRL], a
 
   ret
-
diff --git a/src/hw.inc b/src/hw.inc
index 0f0294e..4aa02f3 100644
--- a/src/hw.inc
+++ b/src/hw.inc
@@ -106,7 +106,7 @@
 #define MASTER_VOLUME 0xFF24
 
 #define CH1_SWEEP 0xFF10
-#define CH1_LEN_DURY 0xFF11
+#define CH1_LEN_DUTY 0xFF11
 #define CH1_VOL_ENV 0xFF12
 #define CH1_PERIOD_LO 0xFF13
 #define CH1_PERIOD_HI_CTRL 0xFF14
diff --git a/src/player.s b/src/player.s
index 0155ce9..7739785 100644
--- a/src/player.s
+++ b/src/player.s
@@ -100,6 +100,7 @@ unit_player_remove_door:
 	; schedule animation
 	push_all
 	call objanim_door_open
+	call play_door_open_noise
 	pop_all
 
 	; remove door tile, door flag
diff --git a/src/unit.s b/src/unit.s
index 7951891..3235c8b 100644
--- a/src/unit.s
+++ b/src/unit.s
@@ -310,7 +310,8 @@ unit_try_move_up:
 
   dec a 
   ld [hl], a
-  
+ 	
+	call play_walk_noise
 
   ret
 
@@ -327,6 +328,8 @@ unit_try_move_down:
   
   inc a
   ld [hl], a
+	
+	call play_walk_noise
   
   ret
 
@@ -343,6 +346,8 @@ unit_try_move_left:
   
   dec a
   ld [hl], a
+	
+	call play_walk_noise
   
   ret
 
@@ -360,6 +365,8 @@ unit_try_move_right:
   inc a
   ld [hl], a
 
+	call play_walk_noise
+
   ret 
 
 
-- 
2.30.2