Trying to switch a texture when player dies (OpenGL + C++) - c++

Question

I'm creating a 2D game and when the player dies I want the texture I to switch to another (to show an explosion) I also want the game to pause for a second or two so the user can see that the texture has changed.
My textures are loading correctly because I can apply it to a shape and i can see it if I say switched it with the players original texture.
I think that it must be that it is only rendering in one frame and then disappearing or something like that. Here is the code.
void Player::die(){
if(Player::lives > 0){
glPushMatrix();
glEnable(GL_TEXTURE_2D);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBindTexture(GL_TEXTURE_2D, explosionTex);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glTranslatef(200, 200, 0.0);
glRotatef(heading, 0,0,1);
glColor3f(1.0,0.0,0.0);
glBegin(GL_POLYGON);
glTexCoord2f(0.0, 1.0); glVertex2f(-40,40);
glTexCoord2f(0.0, 0.0); glVertex2f(-40,-40);
glTexCoord2f(1.0, 0.0); glVertex2f(40,-40);
glTexCoord2f(1.0, 1.0); glVertex2f(40,40);
glEnd();
glDisable(GL_BLEND);
glDisable(GL_TEXTURE_2D);
glPopMatrix();
Sleep ( 1000 );
*xscroll = 0;
*yscroll = 0;
Player::lives--;
Player::XPos = 0;
Player::YPos = 0;
Player::heading = 0;
Player::speed = 0;
}
}
How can I get it to switch texture, display that and then sleep for a time?

Answer 1

You need to swap your buffers before you Sleep() if you want to see anything.
More generally, replace the Sleep() with a ExplodeStart, which you set to CurrentTimeInMilliseconds(). Then each time through your render loop check if CurrentTimeInMilliseconds()-ExplodeStart > 1000. If it is, switch to your regular player texture again.