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//Using SDL and standard IO
#include <SDL2/SDL.h>
#include <stdio.h>
#include "texture.h"
#include "renderer.h"
#include "window.h"
#include "timer.h"
#include "keyHandler.h"
#include <chrono>
#include <thread>
//void millisleep(Uint32 t){
// SDL_Delay(t);
//}
//Screen dimension constants
const int SCREEN_WIDTH = 640;
const int SCREEN_HEIGHT = 480;
const int WALKING_ANIMATION_FRAMES = 7;
void loop( Renderer &renderer, Texture &gSpriteSheetTexture, SDL_Rect* gSpriteClips, Uint32 dt){
static int frame;
renderer.clear();
SDL_Rect* currentClip = &gSpriteClips[ frame / WALKING_ANIMATION_FRAMES ];
// Txanpona mugitu:
float vx = 100; // px/s
static float xpos0;
float xpos = xpos0 + dt/1000.f * vx;
xpos0 = xpos;
float g = 75; // px/(s^2)
static float vy0 = 100; // px/s
static float ypos0;
float vy = vy0 -(dt/1000.f * g) ;
float ypos = ypos0 + dt/1000.f * vy;
ypos0 = ypos;
vy0 = vy;
if ( ypos0 < 0 ) { ypos0 = 0; }
if ( ypos < 0 ) { ypos = 0; }
gSpriteSheetTexture.render(xpos, (SCREEN_HEIGHT/2 -20) - ypos, currentClip);
//Update screen
renderer.update();
++frame;
//Cycle animation
if( frame / WALKING_ANIMATION_FRAMES >= WALKING_ANIMATION_FRAMES )
{
frame = 0;
}
return;
}
int
main( int argc, char* args[] ) {
if( SDL_Init( SDL_INIT_VIDEO ) < 0 )
{
printf( "SDL could not initialize: %s\n", SDL_GetError() );
}
Window window {"This is the title", SCREEN_WIDTH, SCREEN_HEIGHT};
Renderer renderer;
renderer.init(window.window());
renderer.setScale(2,2);
//The window we'll be rendering to
SDL_Rect gSpriteClips[ WALKING_ANIMATION_FRAMES ];
Texture gSpriteSheetTexture {renderer.renderer()};
//Load sprite sheet texture
if(-1 ==gSpriteSheetTexture.loadFromFile( "assets/money.png" ) )
{
return -1;
}
else
{
for( int i =0; i < WALKING_ANIMATION_FRAMES; i++){
//Set sprite clips
gSpriteClips[ i ].x = i*16;
gSpriteClips[ i ].y = 0;
gSpriteClips[ i ].w = 16;
gSpriteClips[ i ].h = 16;
}
}
// BODY
///////////////////////////////////////////////////////////////////////////
const Uint32 LOOP_TIME = 20L; // milliseconds
Timer timer;
timer.start();
GameState game;
KeyHandler keys;
while( true )
{
// Handle events
SDL_Event e;
while( SDL_PollEvent( &e ) != 0 )
{
// Maybe add commands in a queue or a better defined stream?
window.handleEvent(e)->execute(game);
keys.handleEvent(e)->execute(game);
}
if(game.isClosed()) return 0;
if(game.isPaused()) goto next;
// GAME LOOP:
loop(renderer, gSpriteSheetTexture, gSpriteClips, timer.elapsed());
// Loop time calculation:
next:
timer.restart();
timer.waitUntil( LOOP_TIME );
}
SDL_Quit();
return 0;
}
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