Debug mode optimisations

Optimisation in code to improve debug mode performance
before 50fps, after 65fps

Useless std::string argument removed
If assert replaced by direct assert : 


	//old
	if (condition == true)
		assert(0);
	//new
	assert(!condition);


reduction of operator[] in for loop with array

next step : remove all std::map from hell or reduce drasticly calls to `find`. :smile: