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Input help

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Hi all, im creating a game in Open Gl... and right now there is problem with my input function, im moving a sphere, here it is void Input( float elapsed ) { static SDL_Event event; SDL_PollEvent( &event ); if( event.type == SDL_KEYUP ) { if( event.key.keysym.sym == SDLK_ESCAPE ) g_ExitProgram = GL_TRUE; } if( event.type == SDL_KEYDOWN ) { if( event.key.keysym.sym == SDLK_RIGHT ) spherePos.x += 20.0f * elapsed; if( event.key.keysym.sym == SDLK_LEFT ) spherePos.x -= 20.0f * elapsed; if( event.key.keysym.sym == SDLK_UP ) spherePos.z -= 20.0f * elapsed; if( event.key.keysym.sym == SDLK_DOWN ) spherePos.z += 20.0f * elapsed; } memset( &event, 0, sizeof(SDL_Event) ); } +++++++++++++++ I want to be able to move in a diagonal way, i mean be able to press the key UP and DOWN at the same time with any problem, thank you all

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Try making state variables to keep track of the keys. Something like this:



bool isKeyUpPressed;

while(SDL_PollEvent(&event))
{
if(event.type == SDL_KEYDOWN)
{
if(event.key.keysym.sym == SDLK_UP)
{
isKeyUpPressed = true;
}
}
if(event.type == SDL_KEYUP)
{
if(event.key.keysym.sym == SDLK_UP)
{
isKeyUpPressed = false;
}
}
doSomething();
}



Something like that. Then in the doSomething function, check if the state of each key is true, and if it is, do what you want it to do.

That's my suggestion.

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