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#include <stdlib.h>
#include <stdio.h>
#include "SDL.h"
#include "sge.h"
int main(int argc, char** argv)
{
/* Init SDL */
if ( SDL_Init(SDL_INIT_TIMER|SDL_INIT_VIDEO) < 0 ) {
fprintf(stderr, "Couldn't load SDL: %s\n", SDL_GetError());
exit(1);
}
/* Clean up on exit */
atexit(SDL_Quit);
/* Set window title */
SDL_WM_SetCaption("Bouncing ball!", "bounce");
/* Initialize the display */
SDL_Surface *screen;
screen = SDL_SetVideoMode(640, 480, 16, SDL_SWSURFACE);
if ( screen == NULL ) {
fprintf(stderr, "Couldn't set video mode: %s\n", SDL_GetError());
exit(1);
}
/* Open TT font file */
if(sge_TTF_Init()!=0){fprintf(stderr,"TT error: %s\n", SDL_GetError());exit(1);}
sge_TTFont *font;
font=sge_TTF_OpenFont("/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf", 50);
if(font==NULL){fprintf(stderr,"TT error: %s\n", SDL_GetError());exit(1);}
/* Make a nice background */
sge_tt_textout(screen,font,"Super Fun", 160,180, 0,255,0, 0,0,0, SDL_ALPHA_OPAQUE);
sge_tt_textout(screen,font,"Bouncing Ball!!", 100,260, 0,255,0,0,0,0, SDL_ALPHA_OPAQUE);
sge_TTF_CloseFont(font);
/* Allocate buffers */
SDL_Surface *buffer,*circle;
circle=SDL_AllocSurface(SDL_SWSURFACE,100,100,16, 0,0,0,0);
buffer=SDL_AllocSurface(SDL_SWSURFACE,640,480,16, 0,0,0,0);
/* Draws a filled circle on the circle buffer */
sge_ClearSurface(circle,0);
sge_AAFilledCircle(circle,50,50,49, 255,0,0);
/* Set the transparity on the circle */
SDL_SetColorKey(circle, SDL_SRCCOLORKEY, 0); //Set the transparent color
SDL_SetAlpha(circle, SDL_SRCALPHA|SDL_RLEACCEL, 128); //Set the alpha blending value
/* Turns off automatic update */
sge_Update_OFF();
/* Buffers the background */
sge_Blit(screen,buffer,0,0, 0,0 ,640,480);
Sint32 x=250,y=200,oldx=250,oldy=200;
bool left=false, down=false;
int loops=0;
/* Sets start time */
Uint32 start = SDL_GetTicks();
/* Main loop */
SDL_Event event;
do{
SDL_Delay(10);
/* Bounce at screen borders */
if(x>540)
left = true;
else if(x<0)
left = false;
if(y>380)
down = false;
else if(y<0)
down = true;
/* Updates coords */
if(left)
x-=2;
else
x+=2;
if(down)
y+=2;
else
y-=2;
/* Updates the last area */
sge_Blit(buffer,screen,oldx-5,oldy-5, oldx-5,oldy-5, 120,120); oldx=x;oldy=y;
/* Draws the circel */
sge_Blit(circle,screen,0,0, x,y, 100,100);
/* Updates the screen */
sge_Update_ON();
sge_UpdateRect(screen,x-5,y-5,120,120);
sge_Update_OFF();
/* Calculate fps */
loops++;
/* Check events */
if(SDL_PollEvent(&event)==1){
if(event.type==SDL_KEYDOWN && event.key.keysym.sym==SDLK_ESCAPE){break;}
if(event.type==SDL_QUIT){break;}
}
}while(true);
/* Print FPS */
printf("%.2f FPS (target: 100).\n",((double)loops*1000)/(SDL_GetTicks()-start));
/* Clean up */
SDL_FreeSurface(buffer);
SDL_FreeSurface(circle);
return 0;
}
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