move handlers for each packet to their own file

handlers/packet/bspDecal.js

@@ -0,0 +1,47 @@
+var getCoord = function (stream) {
+	var hasInt = !!stream.readBits(1);
+	var hasFract = !!stream.readBits(1);
+	var value = 0;
+	if (hasInt || hasFract) {
+		var sign = !!stream.readBits(1);
+		if (hasInt) {
+			value += stream.readBits(14) + 1;
+		}
+		if (hasFract) {
+			value += stream.readBits(5) * (1 / 32);
+		}
+		if (sign) {
+			value = -value;
+		}
+	}
+	return value;
+};
+
+var getVecCoord = function (stream) {
+	var hasX = !!stream.readBits(1);
+	var hasY = !!stream.readBits(1);
+	var hasZ = !!stream.readBits(1);
+	return {
+		x: hasX ? getCoord(stream) : 0,
+		y: hasY ? getCoord(stream) : 0,
+		z: hasZ ? getCoord(stream) : 0
+	}
+};
+
+module.exports = function (stream) { // 21: BSPDecal
+	var position = getVecCoord(stream);
+	var textureIndex = stream.readBits(9);
+	if (stream.readBits(1)) {
+		var entIndex = stream.readBits(11);
+		var modelIndex = stream.readBits(12);
+	}
+	var lowPriority = !!stream.readBits(1);
+	return {
+		packetType  : 'BSPDecal',
+		position    : position,
+		textureIndex: textureIndex,
+		entIndex    : entIndex,
+		modelIndex  : modelIndex,
+		lowPriority : lowPriority
+	}
+};