exercice x fenetre termine et valide par M.Laurencot

travail_individuel/Meyer/x_fenetre/main.c

 #include <SDL2/SDL.h>
 #include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <math.h>
 
 int main(int argc, char **argv)
 {
@@ -14,6 +17,8 @@ int main(int argc, char **argv)
     int window_x;
     int window_y;
 
+    int number_of_stars = 10;
+
     SDL_InitSubSystem(SDL_INIT_VIDEO);
     SDL_DisplayMode mode;
     int display_width;
@@ -39,7 +44,7 @@ int main(int argc, char **argv)
     window_x = (display_width - window_width) / 2;
     window_y = display_height;
     window = SDL_CreateWindow(
-        "Rocket",
+        "Rocket : 3",
         window_x, window_y,          // centrage de la fenêtre
         window_width, window_height, // largeur = 400, hauteur = 300
         SDL_WINDOW_RESIZABLE);       // redimensionnable
@@ -52,17 +57,71 @@ int main(int argc, char **argv)
         exit(EXIT_FAILURE);
     }
 
+    // decompte decollage
+    SDL_Delay(1000);
+    SDL_SetWindowTitle(window, "Rocket : 2");
+    SDL_Delay(1000);
+    SDL_SetWindowTitle(window, "Rocket : 1");
+    SDL_Delay(1000);
+    SDL_SetWindowTitle(window, "Rocket : FEU!");
+    SDL_Delay(1000);
+    SDL_SetWindowTitle(window, "Rocket");
 
-
-    while(window_y > 0){
+    while (window_y > 0)
+    {
+        window_width = window_width - 15;
+        window_x = (display_width - window_width) / 2;
         window_y = window_y - 100;
+        SDL_SetWindowSize(window, window_width, window_height);
         SDL_SetWindowPosition(window, window_x, window_y);
-        SDL_Delay(1000); // Pause exprimée  en ms
+        SDL_Delay(200); // Pause exprimée  en ms
     }
 
-    /* et on referme tout ce qu'on a ouvert en ordre inverse de la création */
+    // explosion de la rocket
     SDL_DestroyWindow(window); // la fenêtre
 
+    // aleatoire
+    srand(time(0));
+    // creation de [number_of_stars] etoiles dans des directions aleatoires
+    SDL_Window *window_stars[20];
+    int tab_window_x[20];
+    int tab_window_y[20];
+    int tab_direction[20];
+    for (int i = 1; i <= number_of_stars; i++)
+    {
+        int width_r = 50 + rand() % 100;
+        int height_r = 50 + rand() % 50;
+        tab_window_x[i] = (display_width - width_r) / 2;
+        tab_window_y[i] = 0;
+        tab_direction[i] = pow(-1, 1+(rand()%2)); // donne -1 ou 1
+
+        window_stars[i] = SDL_CreateWindow(
+            "Étoile",
+            tab_window_x[i], tab_window_y[i],
+            width_r, height_r,
+            SDL_WINDOW_RESIZABLE);
+
+        SDL_Delay(10); // Pause exprimée  en ms
+    }
+
+    // déplacement des etoiles
+    for (int temps = 0; temps <= 5; temps++)
+    {
+        for (int i = 1; i <= number_of_stars; i++)
+        {
+            tab_window_y[i] = tab_window_y[i] + 20 + rand()%70;
+            tab_window_x[i] = tab_window_x[i] + tab_direction[i]*(rand()%200);
+            SDL_SetWindowPosition(window_stars[i], tab_window_x[i], tab_window_y[i]);
+        }
+        SDL_Delay(400);
+    }
+
+    // destruction des etoiles
+    for (int i = 1; i <= number_of_stars; i++)
+    {
+        SDL_DestroyWindow(window_stars[i]);
+    }
+
     SDL_Quit(); // la SDL
 
     return 0;