implement getVolume() for WaveChannel

.gitignore

@@ -5,4 +5,5 @@ build/
 cmake-build-debug/
 .idea/
 src/.vscode/
-CMakeSettings.json
+CMakeSettings.json
+run.sh

src/gameBoy.cpp

@@ -39,11 +39,11 @@ GBE::GBE()
 	gbe_sound->test();
 
 	// Open the Boot ROM
-	if ((bootROM = fopen("../../../src/dmg_boot.gb", "rb")) == NULL)
+	if ((bootROM = fopen("../src/dmg_boot.gb", "rb")) == NULL)
 		printf("boot rom file not opened");
 
 	// Open the Game ROM
-	if ((gameROM = fopen("../../../tests/pacman.gb", "rb")) == NULL)
+	if ((gameROM = fopen("../tests/tetris.gb", "rb")) == NULL)
 		printf("game rom file not opened");
 
 	// Set the Boot ROM
@@ -129,6 +129,7 @@ void GBE::update()
 		// this runs at a freq of around 27 * freq(DIV) = 442368 Hz
 		// this is probably enough to implement APU
 		gbe_sound->executeAPU();
+		gbe_sound->test();
 		s_Cycles = 0;
 		s_Cycles += gbe_cpu->performInterrupt();
 		gbe_graphics->pollEvents();