#include "renderer.h"
#include <stdio.h>
#include <math.h>

GfxObject obj, background;

void close(); 

int main( int argc, char* args[] )
{
    // If you want the program to not launch the terminal, then
    // go to Project->Settings->General->This program is a GUI application 
    // and uncheck that flag.
    
    
	//Start up SDL and create window of width=800, height = 600
	initRenderer(800, 600); 
    
    // Create an object
    obj = createGfxObject(  "../ship.png" );
    obj.outputWidth  = 200;
    obj.outputHeight = 200;

    background = createGfxObject(  "../background.jpg" );
    background.outputWidth  = 800;
    background.outputHeight = 600;

    const Uint8 *state = SDL_GetKeyboardState(NULL); // get pointer to key states
    
    double angle = 0.0;
    while(true) // The real-time loop
    {
        //Handle events on the inqueue (e.g., mouse events)
        SDL_Event e;  //Event handler
        while( SDL_PollEvent( &e ) != 0 )
        {
            //User requests quit
            if( e.type == SDL_QUIT ) {
                close(); 
                exit(0);
            }
        }
        
        // Check keyboard input
        // for scan codes, see here: https://wiki.libsdl.org/SDL_Scancode
        if (state[SDL_SCANCODE_A]) {
            printf("Key A is pressed.\n"); 
        }
        
        if (state[SDL_SCANCODE_RIGHT] && state[SDL_SCANCODE_UP]) {
            printf("Arrow Right and Arrow Up Keys Pressed.\n");
        }

        //Clear screen with a grey background color, red=0x33, blue=0x33, green=0x33, alpha=0xff. 0xff is maximum.
        SDL_SetRenderDrawColor( gRenderer, 0x33, 0x33, 0x33, 0xFF ); // alpha is transparency: 0 = fully transparent, 0xFF = fully opaque
        SDL_RenderClear( gRenderer );

        //Render our object(s) - background objects first, and then forward objects (like a painter)
        angle = fmod( angle+0.02, 360 );
        renderGfxObject(&background, 400, 300, angle, 1.8f+angle/50.0);
        renderGfxObject(&obj, 400, 300, 0, 1.0f);
        renderText("Hello World!", 300, 150);
        
        //Update screen. 
        // This function also sleeps 16 ms or so (based on the screens refresh rate), because 
        // we used the flag SDL_RENDERER_PRESENTVSYNC in function initRenderer()
        SDL_RenderPresent( gRenderer );
    }

	//Free resources
	close(); 

	return 0;
}

void close()
{
    //Preferably, you should first free all your GfxObjects by calls to freeGfxObject(GfxObject* gfx) - but you don't have to
    // ...
    
    closeRenderer(); //Free resources and close SDL
}