main.cpp

#include <stdlib.h>
#include <dlfcn.h>
#include <stdio.h>
#include <time.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "ofAppGlutWindow.h"

#include "ofMain.h"

ofAppGlutWindow window;

void *livecodeLib = NULL;
string livefile = "default.cpp";

ofBaseApp *app = new ofBaseApp();


void reload() {
	// don't forget to clean up
	if(livecodeLib!=NULL) {
		app->exit();
		delete app;
		dlclose(livecodeLib);
	}
	livecodeLib = dlopen("livecode.dylib", RTLD_LAZY);
	if (livecodeLib == NULL) {
	   // report error ...
	   printf("Error: No dice loading livecode.dylib\n");
	} else {
		// use the result in a call to dlsym
		printf("Success loading\n");
	
		
		void *ptrFunc = dlsym(livecodeLib, "getAppPtr");
		if(ptrFunc!=NULL) {
			
			app = ((ofBaseApp *(*)(ofAppBaseWindow&))ptrFunc)(window);
			app->setup();
		} else {
			printf("Couldn't find the getAppPtr() function\n");
		}
	}
}


void recompileAndReload() {
    long t = ofGetSystemTime();
    
	// call our makefile
	string cmd = "make live LIVEFILE=";
	cmd += livefile;
	system(cmd.c_str());
	reload();
	
	printf("Reload took %ldms\n", ofGetSystemTime() - t);
}


long prevUpdateTime = 0;
void checkAndUpdate() {
	struct stat fileStat;
    if(stat(livefile.c_str(), &fileStat) < 0) {
		printf("Couldn't stat file\n");
		return;
	} 
	long currUpdateTime = fileStat.st_mtime;
	if(currUpdateTime!=prevUpdateTime) {
		printf("Compile reload\n");
		recompileAndReload();
	}
	prevUpdateTime = currUpdateTime;
}

float lastTimeChecked = 0;

void idle(void) {
	//long t = ofGetSystemTime();
	float f = ofGetElapsedTimef();

	// check update time on the file

	if(f>lastTimeChecked+0.1) { // check every 300ms
		checkAndUpdate();
		lastTimeChecked = f;
	}
}






class forwarderApp: public ofBaseApp {


	virtual ~forwarderApp(){}

	void setup(){ app->setup(); }
	void update(){ idle(); app->update(); }
	void draw(){ app->draw(); }
	void exit(){ app->exit(); }

	void windowResized(int w, int h){app->windowResized(w, h); }

	void keyPressed( int key ){ app->keyPressed(key); }
	void keyReleased( int key ){app->keyReleased(key); }

	void mouseMoved( int x, int y ){ app->mouseMoved(x, y); }
	void mouseDragged( int x, int y, int button ){ app->mouseDragged(x, y, button); }
	void mousePressed( int x, int y, int button ){ app->mousePressed(x, y, button); }
	void mouseReleased(){ app->mouseReleased(); }
	void mouseReleased(int x, int y, int button ){ app->mouseReleased(x, y, button); }
	
	void dragEvent(ofDragInfo dragInfo) { app->dragEvent(dragInfo); }
	void gotMessage(ofMessage msg){ app->gotMessage(msg); }
};


int main(int argc, char** argv) {

	// if there's an argument, 
	 if(argc>1) {
	 
	 	livefile = argv[1];
	 	printf("Using live file '%s'\n", argv[1]);
	 } // otherwise using default
	ofSetupOpenGL(&window, 1024,768, OF_WINDOW);			// <-------- setup the GL context

	// this kicks off the running of my app
	// can be OF_WINDOW or OF_FULLSCREEN
	// pass in width and height too:
	ofRunApp(new forwarderApp());
	
    return EXIT_SUCCESS;
}