More changes

src/SparkEmitter.h

@@ -41,7 +41,7 @@ namespace ZL {
 		float biasX;
 
 		// Ranges (used when config supplies intervals)
-		struct FloatRange { float min; float max; };
+		struct FloatRange { float min=0; float max=0; };
 		FloatRange speedRange;    // XY speed
 		FloatRange zSpeedRange;   // Z speed
 		FloatRange scaleRange;
@@ -55,6 +55,7 @@ namespace ZL {
 
 	public:
 		SparkEmitter();
+		SparkEmitter(const SparkEmitter& copyFrom);
 		SparkEmitter(const std::vector<Vector3f>& positions, float rate = 100.0f);
 		SparkEmitter(const std::vector<Vector3f>& positions,
 			std::shared_ptr<Texture> tex,