improve footstep sounds

script/audioLibrary.js

@@ -61,6 +61,9 @@ var AudioLibrary = {
     FOOTSTEPS_1: 'audio/footsteps-1.flac',
     FOOTSTEPS_2: 'audio/footsteps-2.flac',
     FOOTSTEPS_3: 'audio/footsteps-3.flac',
+    FOOTSTEPS_4: 'audio/footsteps-4.flac',
+    FOOTSTEPS_5: 'audio/footsteps-5.flac',
+    FOOTSTEPS_6: 'audio/footsteps-6.flac',
     EAT_MEAT: 'audio/eat-meat.flac',
     USE_MEDS: 'audio/use-meds.flac',
     WEAPON_UNARMED_1: 'audio/weapon-unarmed-1.flac',

script/world.js

@@ -348,7 +348,7 @@ var World = {
 		World.doSpace();
 
 		// play random footstep
-		var randomFootstep = Math.floor(Math.random() * 2) + 1;
+		var randomFootstep = Math.floor(Math.random() * 5) + 1;
 		AudioEngine.playSound(AudioLibrary['FOOTSTEPS_' + randomFootstep]);
 
 		if(World.checkDanger()) {