add some memory aware code
revert sdl calls to past implementation (the one that did not crash)
add some debug methods found online
//
// Prefix header for all source files of the 'OpenGL ES app' target in the 'OpenGL ES app' project
//
#ifdef __OBJC__
#import <Foundation/Foundation.h>
#import <CoreGraphics/CoreGraphics.h>
#import <UIKit/UIKit.h>
#endif
// by http://www.cimgf.com/2010/05/02/my-current-prefix-pch-file/
#ifdef DEBUG
#define DLog(...) NSLog(@"%s %@", __PRETTY_FUNCTION__, [NSString stringWithFormat:__VA_ARGS__])
#define ALog(...) [[NSAssertionHandler currentHandler] handleFailureInFunction:[NSString stringWithCString:__PRETTY_FUNCTION__ encoding:NSUTF8StringEncoding] file:[NSString stringWithCString:__FILE__ encoding:NSUTF8StringEncoding] lineNumber:__LINE__ description:__VA_ARGS__]
#else
#define DLog(...) do { } while (0)
#ifndef NS_BLOCK_ASSERTIONS
#define NS_BLOCK_ASSERTIONS
#endif
#define ALog(...) NSLog(@"%s %@", __PRETTY_FUNCTION__, [NSString stringWithFormat:__VA_ARGS__])
#endif
#define ZAssert(condition, ...) do { if (!(condition)) { ALog(__VA_ARGS__); }} while(0)