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functions.cpp
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functions.cpp
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#include "SDL/SDL.h"
#include "SDL/SDL_ttf.h"
#include "functions.h"
#include "globals.h"
#include "constants.h"
#include "gamestates.h"
#include "game.h"
#include <vector>
#include <list>
#include <string>
#include <fstream>
//Blits surface to screen
void apply_surface (int x, int y, SDL_Surface* source, SDL_Surface* destination, SDL_Rect* clip)
{
SDL_Rect offset;
offset.x = x;
offset.y = y;
SDL_BlitSurface(source, clip, destination, &offset);
}
//Initialization
bool init()
{
if (SDL_Init(SDL_INIT_EVERYTHING) == -1)
return false;
if (TTF_Init() == -1)
return false;
screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, SDL_SWSURFACE);
if (screen == NULL)
return false;
SDL_WM_SetCaption("Tetris", NULL);
return true;
}
//loads necessary files
bool load_files()
{
font = TTF_OpenFont("Eurosti.ttf", 48);
fontSmall = TTF_OpenFont("Eurosti.ttf", 24);
return true;
}
//Frees memory, quits
void clean_up()
{
TTF_CloseFont(font);
TTF_CloseFont(fontSmall);
TTF_Quit();
SDL_Quit();
}
//set the next state to change to
void set_next_state(int newState)
{
if (nextState != STATE_EXIT)
nextState = newState;
}
//changes the state
void change_state()
{
if (nextState != STATE_NULL)
{
if (nextState != STATE_EXIT)
delete currentState;
switch (nextState)
{
case STATE_INTRO:
currentState = new Intro();
break;
case STATE_GAME:
currentState = new Game();
break;
case STATE_HELP:
currentState = new Help();
break;
case STATE_CREDITS:
currentState = new Credits();
break;
case STATE_HIGHSCORES:
currentState = new HighScores();
break;
default:
break;
}
stateID = nextState;
nextState = STATE_NULL;
}
}
void save_high_scores(std::list<std::string> *names, std::list<int> *scores)
{
std::ofstream fout("highscores.txt", std::ofstream::trunc);
std::list<std::string>::iterator itstr;
std::list<int>::iterator itint;
itstr = names->begin();
itint = scores->begin();
while (itstr != names->end() && itint != scores->end())
{
fout << *itstr;
fout << "|";
fout << *itint << std::endl;
itstr++;
itint++;
}
fout.close();
}
void load_high_scores(std::list<std::string> *names, std::list<int> *scores)
{
/*
format:
name|score|(date?)
etc. (10 scores only)
*/
std::ifstream fin("highscores.txt");
if (!fin || fin.eof())
{
//empty file or non-existent
}
else
{
std::string temp;
int tempscore;
while (!fin.eof())
{
std::getline(fin, temp, '|');
names->push_back(temp);
temp.clear();
fin >> tempscore;
scores->push_back(tempscore);
}
}
fin.close();
}