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General / Can't even do the simplest thing right

« on: January 18, 2013, 05:51:11 pm »

#include <SFML/Graphics.hpp>
#include <stdio.h>
#include <iostream>
#include <time.h>

using namespace std;


void inicializar_semilla() {
srand(time(NULL));
}
int aleatorio_mod255() {
int n = 0;
n = (rand() % 254 + 1);
return n;
}

double aleatorio_mod10() {
double n = 0.0;
n = (drand48() * (10.0-1.0));
return n;
}

double aleatorio_mod1000() {
double n = 0.0;
n = (drand48() * (1000.0-500.0));
return n;
}

double aleatorio_mod100() {
double n = 0.0;
n = (drand48() * (100.0-50.0));
return n;
}

int main () {
int colorR = 0, colorG = 0, colorB = 0;
double x1 = 0.0;
double x2 = 0.0;
double y1 = 0.0;
double y2 = 0.0;
double m1 = 0.0;
double m2 = 0.0;
int i;
sf::RenderWindow Screen (sf::VideoMode (800, 600, 32), "Title");
sf::Shape Rect [1500];
float x;
float y;

while(Screen.IsOpened ()){

    sf::Event Evento;;
    while(Screen.GetEvent (Evento)){
        if (Evento.Type == sf::Event::Closed || Evento.Key.Code == sf::Key::Escape)
            Screen.Close();

    }//End of Evento loop

    Screen.Clear();
    for (i = 0; i < 1500; i++){
        inicializar_semilla();
        x1 = aleatorio_mod1000();
        x2 = aleatorio_mod1000();
        y1 = aleatorio_mod1000();
        y2 = aleatorio_mod1000();
        colorR = aleatorio_mod255();
        colorG = aleatorio_mod255();
        colorB = aleatorio_mod255();
        printf("%d, %f", colorR,x1);
        Rect[i] = sf::Shape::Rectangle (x1,x2,y1,y2, sf::Color(colorR,colorG,colorB));
        m1 = aleatorio_mod100();
        m2 = aleatorio_mod100();
        Screen.Draw (Rect[i]);
        Rect[i].Move (m1, m2);
        Screen.Display();
        sf::Sleep(2.00);
    }





} //End of Game Loop

return 0;
}
 

I was messing with shapes and I got a sqare moving, thats nice, so I said to myself: What about I create multiple rectangles at once and make them move on the screen.

I used two random functions to set the size, color and speed of said rectangles random, I wanted tons of colors on my screen.

Okay, I advanced a bit, now it displays random rectangular shapes of various colors BUT they don't move at all, once the next shape is loading the rest stops moving I think thats the problem. Is there any way for me to make them move permanently?

Thank you

PS. BONUS:  just for testing and learning, is there any simple way to make them bounce off on the border of the screen?