soundhandler.cs

Beginning C# Game Programming 的源代码

using System;
using System.Windows.Forms;
using Microsoft.DirectX.DirectSound;
using Microsoft.DirectX.AudioVideoPlayback;
using System.Collections;

namespace SpaceWar {


	/// <summary>
	/// This class handles loading and playing our sounds.
	/// </summary>
	public class SoundHandler {
		Device soundDevice;
		ArrayList sounds = new ArrayList();

		Sounds lastSound;

		const int VolumeEngine = -1000;
		const int VolumeOtherShot = -2000;
		const int VolumeHaHa = -3000;

		public SoundHandler(Control owner) {
			soundDevice = new Device();
			soundDevice.SetCooperativeLevel(owner,CooperativeLevel.Normal);
			CreateSoundBuffers();
		}
	
		Microsoft.DirectX.DirectSound.Buffer LoadFile(string filename) {

			Microsoft.DirectX.DirectSound.BufferDescription bufferDesc = new BufferDescription();
			bufferDesc.Flags = BufferDescriptionFlags.ControlVolume;

			Microsoft.DirectX.DirectSound.Buffer buffer;
			buffer = new Microsoft.DirectX.DirectSound.Buffer(filename, bufferDesc, soundDevice);
		

			return buffer;
		}

		void AddBuffer(string filename, Sounds thisSound, bool looping, int volume) {
			SoundBuffer buffer;

			buffer = new SoundBuffer(
				soundDevice,
				filename,
				thisSound,
				looping);
			sounds.Add(buffer);
			buffer.Volume = volume;
		}

		void AddBuffer(string filename, Sounds thisSound, bool looping) {
			AddBuffer(filename, thisSound, looping, 0);
		}

		void CreateSoundBuffers() {
			AddBuffer(@".\media\hypercharge.wav", Sounds.ShipHyper, false);
			AddBuffer(@".\media\sci fi bass.wav", Sounds.ShipAppear, false);
			AddBuffer(@".\media\laser2.wav", Sounds.ShipFire, false);
			AddBuffer(@".\media\explode.wav", Sounds.ShipExplode, false);

			AddBuffer(@".\media\engine.wav", Sounds.ShipThrust,	true, VolumeEngine);
			AddBuffer(@".\media\laser2_other.wav", Sounds.OtherShipFire, false, VolumeOtherShot);
			AddBuffer(@".\media\explode_other.wav", Sounds.OtherShipExplode, false);
			AddBuffer(@".\media\engine_other.wav", Sounds.OtherShipThrust, true, VolumeEngine);

			AddBuffer(@".\media\sci fi bass.wav", Sounds.OtherShipAppear, false);
			AddBuffer(@".\media\haha.wav", Sounds.Taunt, false, VolumeHaHa);
			
			AddBuffer(@".\media\dude_quest1.wav", Sounds.Dude1, false);
			AddBuffer(@".\media\dude_quest2.wav", Sounds.Dude2, false);
			AddBuffer(@".\media\dude_quest3.wav", Sounds.Dude3, false);
			AddBuffer(@".\media\dude_quest4.wav", Sounds.Dude4, false);
			AddBuffer(@".\media\dude_quest5.wav", Sounds.Dude5, false);
		}

		public void Play(Sounds soundsToPlay) {
			// check each enum value. If that value
			// is set, play the sound...
			foreach (SoundBuffer buffer in sounds) {
				bool on = ((buffer.Sound & soundsToPlay) != 0);
				buffer.Play(on);

			}
			lastSound = soundsToPlay;
		}
	}
}