added sources for Slick

Former-commit-id: 1647fa32ef6894bd7db44f741f07c2f4dcdf9054
Former-commit-id: 0e5810dcfbe1fd59b13e7cabe9f1e93c5542da2d

lib/slick-source/org/newdawn/slick/openal/NullAudio.java

@@ -0,0 +1,66 @@
+package org.newdawn.slick.openal;
+
+/**
+ * A null implementation used to provide an object reference when sound
+ * has failed.
+ * 
+ * @author kevin
+ */
+public class NullAudio implements Audio {
+	/**
+	 * @see org.newdawn.slick.openal.Audio#getBufferID()
+	 */
+	public int getBufferID() {
+		return 0;
+	}
+
+	/**
+	 * @see org.newdawn.slick.openal.Audio#getPosition()
+	 */
+	public float getPosition() {
+		return 0;
+	}
+
+	/**
+	 * @see org.newdawn.slick.openal.Audio#isPlaying()
+	 */
+	public boolean isPlaying() {
+		return false;
+	}
+
+	/**
+	 * @see org.newdawn.slick.openal.Audio#playAsMusic(float, float, boolean)
+	 */
+	public int playAsMusic(float pitch, float gain, boolean loop) {
+		return 0;
+	}
+
+	/**
+	 * @see org.newdawn.slick.openal.Audio#playAsSoundEffect(float, float, boolean)
+	 */
+	public int playAsSoundEffect(float pitch, float gain, boolean loop) {
+		return 0;
+	}
+
+	/**
+	 * @see org.newdawn.slick.openal.Audio#playAsSoundEffect(float, float, boolean, float, float, float)
+	 */
+	public int playAsSoundEffect(float pitch, float gain, boolean loop,
+			float x, float y, float z) {
+		return 0;
+	}
+
+	/**
+	 * @see org.newdawn.slick.openal.Audio#setPosition(float)
+	 */
+	public boolean setPosition(float position) {
+		return false;
+	}
+
+	/**
+	 * @see org.newdawn.slick.openal.Audio#stop()
+	 */
+	public void stop() {
+	}
+
+}