Hi. First of all i will introduce myself.
My name is Juan and I'm From Argentina. I'm 21 years old.
I'm a programer and recently started with C++ as well as with SDL.
I'm just starting a small project with a friend and wrote a basic engine that displays Mouse-Cursor position, Sprite position and moves the sprite on the screen as well as animates it.
The problem y that, I run the program and it goes well, as it shuld
But my friend, who uses the same Compiler and has extacly all the same configurations as I, is having problems.
He can barely see the sprite (A ball in ths case).
The didn't happened to him at first, before animating the ball, but it did when he tried to run it on FullScreen.
Now that i added the animation to the spriters it hjappens to him even in Windowed Mode.
Please, I'll show you the code and could you tel me whats goind on?
Thanx
Juan
#include <tchar.h>
#include <stdlib.h>
#include "SDL.h"
#include "SDL_Image.h"
#include "SDL_ttf.h"
//Constants for window resolution and BPP
#include "definiciones.h"
//Function to draw the sprite on the surface
#include "dibujar.h"
//Mouse position
char chrMousePos[50];
//Sprite Position
char chrSpritePos[50];
//Sprite position X Axis
int SprPosX = 200;
//Sprite position Y Axis
int SprPosY = 200;
//Time from the SDL Timer
int Tiempo = 0;
//Last loop time
int TiempoAnterior= 0;
//Elapsed time between loops
int TiempoTrans = 0;
//Saves the time to know if it has to change frames
int MSs = 0;
//Frames per second
const int FPS = 16;
//X axis of Sprite's Rect
int frameX = 0;
//Actual Frame
int frame = 0;
//Amount of frames
const int MAX_FRAMES = 7;
//Sprite Width
const int ANCHO_SPRITE = 82;
//Spriter Height
const int ALTO_SPRITE = 82;
int main(int argc, _TCHAR* argv[])
{
if (SDL_Init( SDL_INIT_VIDEO | SDL_INIT_TIMER ) != 0 )
{
fprintf(stderr,"Error al inicializar SDL: %s\n", SDL_GetError());
return 1;
}
if ( TTF_Init() < 0 )
{
fprintf(stderr,"Error al inicializar SDL_ttf: %s\n", SDL_GetError());
return 1;
}
atexit(SDL_Quit);
//Main Screen Surface
SDL_Surface* pantalla = SDL_SetVideoMode ( VENTANA_ANCHO, VENTANA_ALTO, 0, SDL_HWSURFACE | SDL_DOUBLEBUF | SDL_NOFRAME );
if (pantalla == NULL)
{
fprintf(stderr,"No se puedo establecer el modo de video: %s\n", SDL_GetError());
return 1;
}
//Sprite Surface
SDL_Surface* sprite = IMG_Load("data/gfx/bolita.png");
if (sprite == NULL)
{
fprintf(stderr,"No se pudo cargar %s: %s\n", "bolita.png", SDL_GetError());
return 1;
}
SDL_SetColorKey( sprite, SDL_SRCCOLORKEY, SDL_MapRGB(sprite->format, 255, 0, 255 ) );
//Font
TTF_Font* fuente = TTF_OpenFont("data/fonts/ARIAL.TTF", 14);
if (fuente == NULL)
{
fprintf(stderr,"No se pudo cargar %s: %s\n", "ARIAL.TTF", SDL_GetError());
return 1;
}
//ForeColor
SDL_Color fuenteColor = { 255, 255, 255 };
//Surface for the mouse position information
SDL_Surface* textoSupPosMouse = TTF_RenderText_Solid(fuente, "", fuenteColor);
//Surface for Sprite position information
SDL_Surface* textoSupPosSprite = TTF_RenderText_Solid(fuente, "", fuenteColor);
//Position for mouse coords information
SDL_Rect textoUbicaPosMouse = { 0, 0, 0, 0 };
//Position for sprite coords information
SDL_Rect textoUbicaPosSprite = {0, 16, 0, 0};
//Font style
TTF_SetFontStyle( fuente, TTF_STYLE_ITALIC );
SDL_WM_SetCaption( VENTANA_TITULO, 0 );
//KeyPress
bool TeclaPress[323] = {false} ;
//Event
SDL_Event evento;
//Loop Flag
bool blnEjecutar = true;
//Main loop while ( blnEjecutar )
{
SDL_FillRect( pantalla, NULL, SDL_MapRGB( pantalla->format, 0, 0, 0 ) );
if ( SDL_PollEvent( &evento ) )
{
if ( evento.type == SDL_QUIT )
{
blnEjecutar = false;
}
if ( evento.type == SDL_KEYDOWN )
TeclaPress[evento.key.keysym.sym] = true;
if ( evento.type == SDL_KEYUP )
TeclaPress[evento.key.keysym.sym] = false;
if ( evento.type == SDL_MOUSEMOTION )
{
sprintf(chrMousePos,"Mouse: %d , %d", evento.motion.x, evento.motion.y);
}
}
if( TeclaPress[SDLK_ESCAPE] )
blnEjecutar = false;
if( TeclaPress[SDLK_LEFT] )
{
if ( SprPosX <= 0 )
SprPosX = 0;
else
{
SprPosX -= 2;
if ( MSs >= ( 1000 / FPS ) )
{
MSs = 0;
if ( frame <= 0 )
frame = 7;
else
frame--;
frameX = ANCHO_SPRITE * frame;
}
else
MSs += TiempoTrans;
}
}
if( TeclaPress[SDLK_RIGHT] )
{
if ( ( SprPosX + ANCHO_SPRITE ) >= VENTANA_ANCHO )
SprPosX = VENTANA_ANCHO - ANCHO_SPRITE;
else
{
SprPosX += 2;
if ( MSs >= ( 1000 / FPS ) )
{
MSs = 0;
if ( frame >= 7 )
frame = 0;
else
frame++;
frameX = ANCHO_SPRITE * frame;
}
else
MSs += TiempoTrans;
}
}
if( TeclaPress[SDLK_UP] )
{
if ( SprPosY <= 0 )
SprPosY = 0;
else
SprPosY -= 2;
}
if( TeclaPress[SDLK_DOWN] )
{ if ( ( SprPosY + ALTO_SPRITE ) >= VENTANA_ALTO )
SprPosY = VENTANA_ALTO - ALTO_SPRITE;
else
SprPosY += 2;
}
Tiempo = SDL_GetTicks();
TiempoTrans = Tiempo - TiempoAnterior;
TiempoAnterior = Tiempo;
textoSupPosMouse = TTF_RenderText_Solid( fuente, chrMousePos, fuenteColor );
sprintf(chrSpritePos,"Sprite: %d , %d", SprPosX, SprPosY);
textoSupPosSprite = TTF_RenderText_Solid( fuente, chrSpritePos, fuenteColor );
SDL_BlitSurface( textoSupPosMouse, NULL, pantalla, &textoUbicaPosMouse );
SDL_BlitSurface( textoSupPosSprite, NULL, pantalla, &textoUbicaPosSprite );
dibujaSprite(sprite,pantalla,frameX,0,SprPosX,SprPosY,ANCHO_SPRITE,ALTO_SPRITE);
SDL_Flip( pantalla );
}
And this is the "dibujaSprite" function. (drawSprite)
//Receivs Sprite Surface, Screen Surface, SpriteSurface X, Y, Screen Surface X, Y and the Width and Height of the sprite.
void dibujaSprite(SDL_Surface* spriteSup, SDL_Surface* pantallaSup,
int spriteX, int spriteY, int pantallaX, int pantallaY,
int ancho, int alto)
{
SDL_Rect spriteRect;
spriteRect.x = spriteX;
spriteRect.y = spriteY;
spriteRect.w = ancho;
spriteRect.h = alto;
//Screen Rect
SDL_Rect pantallaRect;
pantallaRect.x = pantallaX;
pantallaRect.y = pantallaY;
pantallaRect.w = ancho;
pantallaRect.h = alto;
SDL_BlitSurface(spriteSup, &spriteRect, pantallaSup, &pantallaRect);
}
Any Ideas what the problem would be?
Is it in the code?
Bye!" Thanx!
