Add Param::randomizable

include/engine/Param.hpp

@@ -38,6 +38,8 @@ struct Param {
 	/** An optional one-sentence description of the parameter */
 	std::string description;
 	ParamQuantityFactory *paramQuantityFactory = NULL;
+	/** Determines whether this param will be randomized automatically when the user requests to randomize the module state */
+	bool randomizable = true;
 
 	~Param() {
 		if (paramQuantityFactory)

src/engine/Module.cpp

@@ -81,7 +81,8 @@ void Module::reset() {
 
 void Module::randomize() {
 	for (Param &param : params) {
-		param.randomize();
+		if (param.randomizable)
+			param.randomize();
 	}
 	onRandomize();
 }