test: update test_audio to use main game music engine

Makefile

@@ -8,12 +8,16 @@ SRCS = $(wildcard $(SRC_DIR)/*.c)
 OBJS = $(patsubst $(SRC_DIR)/%.c, $(OBJ_DIR)/%.o, $(SRCS))
 
 TARGET = maze.gb
+AUDIO_TARGET = test_audio.gb
 
-all: $(TARGET)
+all: $(TARGET) $(AUDIO_TARGET)
 
 $(TARGET): $(OBJS)
 	$(CC) $(CFLAGS) -o $(TARGET) $(OBJS)
 
+$(AUDIO_TARGET): test_audio.c $(OBJ_DIR)/music.o
+	$(CC) $(CFLAGS) -o $(AUDIO_TARGET) test_audio.c $(OBJ_DIR)/music.o
+
 $(OBJ_DIR)/%.o: $(SRC_DIR)/%.c | $(OBJ_DIR)
 	$(CC) $(CFLAGS) -c -o $@ $<
 

test_audio.c

@@ -1,59 +1,18 @@
 #include <gb/gb.h>
 #include <stdio.h>
-
-#define N_C5  0x706
-#define N_E5  0x739
-#define N_G5  0x759
-#define N_REST 0x000
-
-const uint16_t arp[16] = {
-    N_C5, N_REST, N_E5, N_REST, N_G5, N_REST, N_E5, N_REST,
-    N_C5, N_REST, N_E5, N_REST, N_G5, N_REST, N_E5, N_REST
-};
-
-static uint8_t tick = 0;
-static uint8_t frame_counter = 0;
-
-void init_music() {
-    NR52_REG = 0x00;
-    NR52_REG = 0x80;
-    NR50_REG = 0x77;
-    NR51_REG = 0xFF;
-}
-
-void update_music() {
-    if (frame_counter == 0) {
-        uint16_t f1 = arp[tick];
-        if (f1 == N_REST) {
-            NR11_REG = 0x00;
-            NR12_REG = 0x00;
-            NR13_REG = 0x00;
-            NR14_REG = 0x80;
-        } else {
-            NR10_REG = 0x00; 
-            NR11_REG = 0x80; 
-            NR12_REG = 0xF2; 
-            NR13_REG = (uint8_t)(f1 & 0xFF);
-            NR14_REG = 0x80 | ((f1 >> 8) & 0x07);
-        }
-        
-        tick++;
-        if (tick >= 16) tick = 0;
-        
-        frame_counter = 15; // Lento
-    } else {
-        frame_counter--;
-    }
-}
+#include "music.h"
 
 void main() {
-    printf("   AUDIO TEST 2\n\n");
-    printf(" Tracker Test in Esecuzione...\n");
+    printf("   AUDIO TEST MICE!\n\n");
+    printf(" Soundtrack in Loop...\n");
     
     init_music();
     
     while(1) {
         update_music();
         wait_vbl_done();
+        
+        uint8_t keys = joypad();
+        // Optional test logic for SFX could go here if needed.
     }
 }