Callbacks

using System;
using Unigine;

class UnigineApp {

// world function
private static Variable runWorldFunction(Variable name,Variable v) {
		
		Log.warning("runWorldFunction({0},{1}): called\n",name.getTypeName(),v.getTypeName());
		
		Engine engine = Engine.get();
		
		return engine.runWorldFunction(name,v);
	}

// entry point
	[STAThread]
	static void Main(string[] args) {
	
		Wrapper.init();

		// export the runWorldFunction() function defined above
		Interpreter.addExternFunction("runWorldFunction",new Interpreter.Function2v(runWorldFunction));
	
		// initialize the engine
		Engine engine = Engine.init(Engine.VERSION,args);
		
		// main loop
		while(!engine.isDone()) {
			
			engine.update();
			engine.render();
			engine.swap();

			// call the counter() function of the script (defined below)
			Variable ret = engine.runWorldFunction(new Variable("counter"));
			// print a message depending on the value returned by the counter() script function:
			// print the current value of the counter
			if(ret.getInt() != -1) Log.message("counter is: {0}\n",ret.getInt());
			// print the world name
			if(ret.getInt() == 3) Log.message("\nworld name is: \"{0}\"\n",engine.runWorldFunction(new Variable("engine.world.getName")).getString());
		}

		// shutdown engine and call the shutdown() function in the loaded world script
		Engine.shutdown();
	}
}

// callbacks.cpp

/*
*/
int callback(int value) {
	
	log.warning("callback(%s): called\n",typeinfo(value));
	
	return value;
}

/*
*/
void counter() {
	
	for(int i = 0; i < 4; i++) {
		log.warning("counter(): called\n");
		yield i;
	}
	
	return -1;
}

/*
*/
int init() {
	
	log.message("\n");
	
	// run the callback() script function via the API runWorldFunction() function
	log.message("result is: %s\n\n",typeinfo(runWorldFunction("callback",10)));
	log.message("result is: %s\n\n",typeinfo(runWorldFunction("callback",vec3(1.0f,2.0f,3.0f))));
	log.message("result is: %s\n\n",typeinfo(runWorldFunction("callback","a string")));
	
	/////////////////////////////////
	
	// show console
	engine.console.setActivity(1);
	
	return 1;
}

runWorldFunction(string,int): called
callback(int: 10): called
result is: int: 10

runWorldFunction(string,vec3): called
callback(vec3: 1 2 3): called
result is: vec3: 1 2 3

runWorldFunction(string,string): called
callback(string: "a string"): called
result is: string: "a string"

counter(): called
counter is: 0
counter(): called
counter is: 1
counter(): called
counter is: 2
counter(): called
counter is: 3

world name is: "data/callbacks"