Simple pong game (SDL) - main.cpp

//Simple pong game - main.cpp
//created by thecplusplusguy
//     http://www.youtube.com/user/thecplusplusguy
#include <SDL/SDL.h>
#include <iostream>
#include <SDL/SDL_ttf.h>
#include <SDL/SDL_mixer.h>
#include "ball.h"
#include "paddle.h"

SDL_Surface* load_image(const char* c,Uint32 colorkey=0)
{
    SDL_Surface* tmp=SDL_LoadBMP(c);
    if(colorkey!=0)
    {
        SDL_SetColorKey(tmp,SDL_SRCCOLORKEY,colorkey);
    }
    return tmp;
}

int main(int argc,char* argv[])
{
    SDL_Surface* screen,*icon;
    const int width=640;
    const int FPS=30;
    const int height=480;
    screen=SDL_SetVideoMode(width,height,32,SDL_SWSURFACE);
    icon=load_image("icon.bmp");
    SDL_WM_SetIcon(icon,NULL);
    SDL_WM_SetCaption("Pong game",NULL);
    TTF_Font* font;
    TTF_Init();
    Mix_OpenAudio(22050,MIX_DEFAULT_FORMAT,2,4096);
    Mix_Music* music;
    Mix_Chunk* effect;
    music=Mix_LoadMUS("Hackbeat.wav");
    effect=Mix_LoadWAV("bassdrum1.wav");
    Mix_PlayMusic(music,-1);
    font=TTF_OpenFont("air.ttf",20);
    SDL_Color color = {0,0,0};
    SDL_Event event;
    Uint32 start;
    bool running=true;
    bool arr[4] = {0,0,0,0};
    paddle player1(load_image("paddle.bmp"),0,225,10,50,3);
    paddle player2(load_image("paddle.bmp"),width-10,225,10,50,3);
    ball ball1(load_image("ball.bmp",SDL_MapRGB(screen->format,0x00,0xff,0xff)),320,240,20,20,3,3);
    while(running)
    {
        start=SDL_GetTicks();
        //handle events
        while(SDL_PollEvent(&event))
        {
            switch(event.type)
            {
                case SDL_QUIT:
                    running=false;
                    break;
                case SDL_KEYDOWN:
                    switch(event.key.keysym.sym)
                    {
                        case SDLK_UP:
                            arr[0]=1;
                            break;
                        case SDLK_DOWN:
                            arr[1]=1;
                            break;

                        case SDLK_w:
                            arr[2]=1;
                            break;
                        case SDLK_s:
                            arr[3]=1;
                            break;
                    }
                    break;
                case SDL_KEYUP:
                    switch(event.key.keysym.sym)
                    {
                        case SDLK_UP:
                            arr[0]=0;
                            break;
                        case SDLK_DOWN:
                            arr[1]=0;
                            break;

                        case SDLK_w:
                            arr[2]=0;
                            break;
                        case SDLK_s:
                            arr[3]=0;
                            break;
                    }
                    break;
            }
        }
        //logic
        if(arr[0])
            player2.moveUp();
        else if(arr[1])
            player2.moveDown();
        if(arr[2])
            player1.moveUp();
        else if(arr[3])
            player1.moveDown();
        ball1.move(player1.getRect(),player2.getRect(),effect);
        switch(ball1.isOut())
        {
            case 1:
                player2.incpoint();
                player1.setBack(0,225,10,50,3);
                player2.setBack(width-10,225,10,50,3);
                ball1.setBack(320,240,20,20,3,3);
                break;
            case 2:
                player1.incpoint();
                player1.setBack(0,225,10,50,3);
                player2.setBack(width-10,225,10,50,3);
                ball1.setBack(320,240,20,20,3,3);
                break;
        }

        //render
        SDL_FillRect(screen,&screen->clip_rect,SDL_MapRGB(screen->format,0xff,0xff,0xff));
        player1.show();
        player2.show();
        ball1.show();

        char c[5];
        SDL_Rect tmp = {10,0};
        sprintf(c,"%d",player1.getPoints());
        SDL_Surface* text=TTF_RenderText_Solid(font,c,color);
        SDL_BlitSurface(text,NULL,screen,&tmp);

        tmp.x=width-40;
        sprintf(c,"%d",player2.getPoints());
        text=TTF_RenderText_Solid(font,c,color);
        SDL_BlitSurface(text,NULL,screen,&tmp);
        SDL_FreeSurface(text);

        SDL_Flip(screen);
        //regulate FPS
        if(1000/FPS>(SDL_GetTicks()-start))
            SDL_Delay(1000/FPS-(SDL_GetTicks()-start));
    }
    //deinitailaze everything
    SDL_FreeSurface(icon);
    Mix_FreeMusic(music);
    Mix_FreeChunk(effect);
    Mix_CloseAudio();
    TTF_CloseFont(font);
    TTF_Quit();
    SDL_Quit();
}