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C-/C++-Quelltext

#include <SDL.h>
#include <time.h>
#include <cstdlib>

#define enemy_height 32
#define enemy_width  32

#define bullet_height 12
#define bullet_width  6

const int MAX_BULLETS = 50;
const int MAX_ENEMYS = 50;

SDL_Surface* ScreenSurface =NULL;
SDL_Surface* window = NULL;

SDL_Surface* Background = NULL;
SDL_Surface* Player = NULL;
SDL_Surface* Enemy = NULL;
SDL_Surface* Bullet = NULL;

SDL_Rect posPlayer, posBullet, posEnemy;

SDL_Rect dstrect;

SDL_Event event;

bool quit = false;

class thePlayer
{
    public:
    thePlayer();

    void player_movement();
    void show_player();

    private:
};

//-----------------------------

class theBullet
{
public:
theBullet();

bool isActive;
int x_position;
int y_position;

void bullet_movement();
void add_new_bullet();
void show_bullet();


private:

};
theBullet arrayofBullets[MAX_BULLETS];

//-----------------------------

class theEnemy
{
public:
theEnemy();

bool EnemyisActive;
int x_Enemy;
int y_Enemy;

void enemy_movement();
void show_enemy();

private:

};
theEnemy arrayofEnemy[MAX_ENEMYS];

//-----------------------------

theBullet::theBullet()
{
/*posBullet.x;
posBullet.y;
posBullet.w = 10;
posBullet.h = 15;*/
}

void theBullet::bullet_movement()
{
/*if(keystate[SDL_SCANCODE_SPACE])
{
    posBullet.x = posPlayer.x + 25;
    posBullet.y = posPlayer.y + 10;
}

posBullet.y -= 2;

if(posBullet.y < 0)
{
    posBullet.y = -50;

}*/
}

void theBullet::show_bullet()
{
 SDL_BlitSurface(Bullet, NULL, ScreenSurface, &posBullet);
}

//-----------------------------

theEnemy::theEnemy()
{
 x_Enemy = 1;
 y_Enemy = -300;
}

void theEnemy::enemy_movement()
{
 for (int i=0; i<MAX_ENEMYS; i++)
 {
  if (arrayofEnemy[i].EnemyisActive == true)
  {
   arrayofEnemy[i].y_Enemy += 1;

   if (arrayofBullets[i].y_position > 600)
   {
    arrayofEnemy[i].EnemyisActive = false;
   }

  }
 }
}

void theEnemy::show_enemy()
{
  for (int i=0; i<MAX_ENEMYS; i++)
    {
     if (arrayofEnemy[i].EnemyisActive == true)
     {
      SDL_Rect dstrect2;
      dstrect2.x = arrayofEnemy[i].x_Enemy;
      dstrect2.y = arrayofEnemy[i].y_Enemy;
      dstrect2.w = Bullet->w;
      dstrect2.h = Bullet->h;
      SDL_BlitSurface(Enemy, NULL, ScreenSurface, &dstrect2);
      SDL_SetColorKey(Enemy, SDL_TRUE, SDL_MapRGB(Enemy->format, 255, 0, 255));
     }
    }
}

//-----------------------------

thePlayer::thePlayer()
{
    posPlayer.x = 400;
    posPlayer.y = 300;
    posPlayer.w = 20;
    posPlayer.h = 30;

}

void thePlayer::player_movement()
{
 while (SDL_PollEvent(&event))
 {
  switch(event.type)
  {
   case SDL_QUIT:
   quit= true;
   break;
  }

  if(event.type == SDL_MOUSEMOTION)
  {
   posPlayer.x = event.motion.x;
   posPlayer.y = event.motion.y;
  }

  if(event.type == SDL_MOUSEBUTTONDOWN)
  {
   for (int i=0; i<MAX_BULLETS; i++)
   {
    if (arrayofBullets[i].isActive == false)
    {
     arrayofBullets[i].x_position = posPlayer.x + 25;
     arrayofBullets[i].y_position = posPlayer.y + 10;
     arrayofBullets[i].isActive = true;
     break;
    }
   }
  }

 }//end of poll_event
}

void thePlayer::show_player()
{
 SDL_BlitSurface( Player, NULL, ScreenSurface,&posPlayer);
 SDL_SetColorKey(Player, SDL_TRUE, SDL_MapRGB(Player->format, 255, 0, 255));
}

//-----------------------------



int main(int argc, char** argv)
{
 SDL_Init(SDL_INIT_VIDEO);

 SDL_Window * window = SDL_CreateWindow("SDL TestGame",
 SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,   800, 600, 0);

 ScreenSurface = SDL_GetWindowSurface(window);

 Background= SDL_LoadBMP("background.bmp");
 Player = SDL_LoadBMP("ship.bmp");
 Bullet = SDL_LoadBMP("shot.bmp");
 Enemy = SDL_LoadBMP("enemy.bmp");

 thePlayer myPlayer;
 theEnemy  myEnemy;

 srand(time(NULL));
 //makes all bullets false
 for (int i=0; i<MAX_BULLETS; i++)
 {
  arrayofBullets[i].isActive = false;
 }

//create random pos and active the enemy
 for (int i=0; i<MAX_ENEMYS; i++)
 {
  arrayofEnemy[i].x_Enemy += rand()%800+1;
  arrayofEnemy[i].y_Enemy += rand()%200+27;
  arrayofEnemy[i].EnemyisActive = true;
 }


 //GAME LOOP
 while (quit == false)
 {
  SDL_BlitSurface(Background, NULL, ScreenSurface, NULL);

  myPlayer.show_player();
  myPlayer.player_movement();

  //draw the enemy ..
  myEnemy.show_enemy();
  myEnemy.enemy_movement();

    //update game objects
    for (int i=0; i<MAX_BULLETS; i++)
    {
     if (arrayofBullets[i].isActive == true)
     {
      arrayofBullets[i].y_position -= 2;
      if (arrayofBullets[i].y_position < 0)
      {
       arrayofBullets[i].isActive = false;
      }
     }
    }

    for (int i=0; i<MAX_BULLETS; i++)
    {
     if (arrayofBullets[i].isActive == true)
     {

      dstrect.x = arrayofBullets[i].x_position;
      dstrect.y = arrayofBullets[i].y_position;
      dstrect.w = Bullet->w;
      dstrect.h = Bullet->h;
      SDL_BlitSurface(Bullet, NULL, ScreenSurface, &dstrect);
     }
    }

   for (int i=0; i<MAX_ENEMYS; i++)
    {
     if (arrayofEnemy[i].EnemyisActive == true)
     {
      if ((((arrayofBullets[i].x_position + bullet_width >= arrayofEnemy[i].x_Enemy) && (arrayofBullets[i].x_position + bullet_width <= arrayofEnemy[i].x_Enemy + enemy_width)) ||

            ((arrayofEnemy[i].x_Enemy + enemy_width >= arrayofBullets[i].x_position) && (arrayofEnemy[i].x_Enemy + enemy_width <= arrayofBullets[i].x_position + bullet_width)))

      && (((arrayofBullets[i].y_position + bullet_height >= arrayofEnemy[i].y_Enemy) && (arrayofBullets[i].y_position + bullet_height <= arrayofEnemy[i].y_Enemy + enemy_height)) ||

           ((arrayofEnemy[i].y_Enemy + enemy_height >= arrayofBullets[i].y_position) && (arrayofEnemy[i].y_Enemy + enemy_height <= arrayofBullets[i].y_position + bullet_height))))

     {
      arrayofBullets[i].isActive = false;
      arrayofEnemy[i].EnemyisActive = false;
     }
    }
   }


  SDL_UpdateWindowSurface(window);
 }

 SDL_DestroyWindow(window);
 SDL_FreeSurface(Background);
 SDL_FreeSurface(Player);
 SDL_FreeSurface(Bullet);
 SDL_FreeSurface(Enemy);
}

C-/C++-Quelltext

      if ((((enemy_bullets[i].pos_x + ebullet_width >= ship_pan.pos_x) && (enemy_bullets[i].pos_x + ebullet_width <= ship_pan.pos_x + player_width)) ||

                       ((ship_pan.pos_x + player_width >= enemy_bullets[i].pos_x) && (ship_pan.pos_x + player_width <= enemy_bullets[i].pos_x + ebullet_width)))

                       && (((enemy_bullets[i].pos_y + ebullet_height >= ship_pan.pos_y) && (enemy_bullets[i].pos_y + ebullet_height <= ship_pan.pos_y + player_height)) ||

                       ((ship_pan.pos_y + player_height >= enemy_bullets[i].pos_y) && (ship_pan.pos_y + player_height <= enemy_bullets[i].pos_y + ebullet_height))))

               {

                       players_health -= 10;

                       snd_play(playerhit_wav, 90, 0);

                       ship_pan.bmap = shiphit_tga;

                       reset(enemy_bullets[i], VISIBLE);

                       wait (3);

                       ship_pan.bmap = ship_tga;

                       break; // get out of the while loop

               }

               wait (1);

       }

       enemy_bullets[i] = NULL;

}

C-/C++-Quelltext

int i2;

...
  for (int i=0; i<MAX_ENEMYS; i++)
    {

      if ((((arrayofBullets[i2].x_position + bullet_width >= arrayofEnemy[i].x_Enemy) && (arrayofBullets[i2].x_position + bullet_width <= arrayofEnemy[i].x_Enemy + enemy_width)) ||

            ((arrayofEnemy[i].x_Enemy + enemy_width >= arrayofBullets[i2].x_position) && (arrayofEnemy[i].x_Enemy + enemy_width <= arrayofBullets[i2].x_position + bullet_width)))

      && (((arrayofBullets[i2].y_position + bullet_height >= arrayofEnemy[i].y_Enemy) && (arrayofBullets[i2].y_position + bullet_height <= arrayofEnemy[i].y_Enemy + enemy_height)) ||

           ((arrayofEnemy[i].y_Enemy + enemy_height >= arrayofBullets[i2].y_position) && (arrayofEnemy[i].y_Enemy + enemy_height <= arrayofBullets[i2].y_position + bullet_height))))

     {
      arrayofBullets[i2].isActive = false;
      arrayofEnemy[i].EnemyisActive = false;
     }

   }