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class Bullet
{
public:
static const int BULLET_WIDTH = 15;
static const int BULLET_HEIGHT = 25;
static const int BULLET_VEL = 5;
Bullet();
//xFire, yFire - position relative to player
void handle_input(int xFire, int yFire);
void bullet_render(); //renders bullet
void bullet_move(); //moves bullet
bool isAlive;
private:
//bullet offsets
int bullet_x, bullet_y;
//velocity of bullets
int velX, velY;
};
std::vector<Bullet> bullets;
Bullet::Bullet()
{
isAlive = false;
bullet_x = 0;
bullet_y = 0;
velX = 0;
velY = BULLET_VEL;
}
void Bullet::handle_input(int xFire, int yFire)
{
if(event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_z)
{
Bullet b;
bullet_x = xFire;
bullet_y = yFire;
isAlive = true;
bullets.push_back(b);
}
}
void Bullet::bullet_move()
{
if(isAlive == false) return; //do nothing
for(int i = 0; i < bullets.size(); i++)
{
bullets[i].bullet_x += velX;
bullets[i].bullet_y -= velY;
}
//if bullet goes off screen, delete
for(int i = 0; i < bullets.size(); i++)
{
bullet[i].bullet_y -= velY;
if((bullets[i].bullet_y < 0) || (bullets[i].bullet_y + BULLET_HEIGHT > SCREEN_HEIGHT))
{
isAlive = false;
bullets.erase(bullets.begin() + i);
}
}
}
void Bullet::bullet_render()
{
if(isAlive == true)
{
for(int i = 0; i < bullets.size(); i++)
{
apply_surface(bullets[i].bullet_x, bullets[i].bullet_y, bullet_fire, screen);
}
}
}
int main(int argc, char* args[])
{
bool quit = false;
//offsets of bg
int bgX = 0;
int bgY = 0;
Player player(SCREEN_WIDTH/2 - (55/2), SCREEN_HEIGHT - 65);
Player player2(50, 50);
Bullet zbullet;
Timer fps;
//initialize
if(init() == false)
{
return 1;
}
//load the files
if(load_files() == false)
{
return 1;
}
while(quit == false)
{
fps.start();
while(SDL_PollEvent(&event))
{
player.handle_input();
zbullet.handle_input(player.x+20, player.y);
if(event.type == SDL_QUIT)
{
quit = true;
}
}
//scrolls background
bgY += 2;
if(bgY >= background->h)
{
bgY = 0;
}
//renders text
message = TTF_RenderText_Solid(font, "SCORE", textColor);
if(message == NULL)
{
return 1;
}
//shows bg and text
apply_surface(bgX, bgY, background, screen);
apply_surface(bgX, bgY - background->h, background, screen);
apply_surface(10, 0, message, screen);
//moves objects
player.move(player2.get_rects());
zbullet.bullet_move();
//shows objects
zbullet.bullet_render();
player.render();
player2.render();
if(SDL_Flip(screen) == -1)
{
return 1;
}
//Cap the frame rate
if( fps.get_ticks() < 1000 / FRAMES_PER_SECOND )
{
SDL_Delay( ( 1000 / FRAMES_PER_SECOND ) - fps.get_ticks() );
}
}
clean_up();
return 0;
}
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