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Functions.cpp
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Functions.cpp
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#include <SDL/SDL.h>
#include <SDL/SDL_image.h>
#include <SDL/SDL_mixer.h>
#include <string>
#include "Globals.h"
#include "Objects.h"
using namespace std;
SDL_Surface * load_image ( string file )
{
SDL_Surface * load = NULL; SDL_Surface * opt = NULL;
load = IMG_Load ( file.c_str() );
if ( load != NULL )
{
opt = SDL_DisplayFormat(load);
SDL_FreeSurface(load);
if ( opt != NULL )
{
SDL_SetColorKey ( opt, SDL_SRCCOLORKEY, SDL_MapRGB(opt->format, 0, 0xFF, 0xFF) );
}
}
return opt;
}
void apply_surface ( int x, int y, SDL_Surface * src, SDL_Surface * dst, SDL_Rect * clip )
{
SDL_Rect offset;
offset.x = x; offset.y = y;
SDL_BlitSurface ( src, clip, dst, &offset );
}
bool init()
{
if ( SDL_Init(SDL_INIT_EVERYTHING) == -1 )
{
return false;
}
if ( Mix_OpenAudio( 22050, MIX_DEFAULT_FORMAT, 2 , 512 ) == -1 )
{
return false;
}
if ( TTF_Init() == -1 )
{
return false;
}
screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, SDL_SWSURFACE /*|SDL_FULLSCREEN*/ );
if ( screen == NULL )
{
return false;
}
SDL_WM_SetCaption("Me and my shadow", NULL );
return true;
}
bool load_files()
{
s_dark_block = load_image("data/gfx/dark.png");
s_black = load_image("data/gfx/black.png");
music = Mix_LoadMUS("data/sfx/music.mid");
font = TTF_OpenFont("data/font/ComicBook.ttf", 35);
return true;
}
void clean()
{
delete currentState;
SDL_Quit();
Mix_CloseAudio();
}
void next_state( int newstate )
{
if ( nextState != STATE_EXIT )
{
nextState = newstate;
}
}
void change_state()
{
if ( nextState != STATE_NULL )
{
if ( nextState != STATE_EXIT )
{
delete currentState;
}
switch ( nextState )
{
case STATE_GAME:
{
currentState = new Game();
break;
}
case STATE_MENU:
{
currentState = new Menu();
break;
}
case STATE_HELP:
{
currentState = new Help();
break;
}
case STATE_LEVEL_SELECT:
{
currentState = new LevelSelect();
break;
}
}
stateID = nextState;
nextState = STATE_NULL;
Timer next;
next.start();
int alpha = 0;
while ( next.get_ticks() < 2000 )
{
alpha = alpha + 5;
SDL_SetAlpha(s_black, SDL_SRCALPHA, alpha);
apply_surface(0, 0, s_black, screen, NULL );
SDL_Flip(screen);
}
}
}
bool check_collision( SDL_Rect A, SDL_Rect B )
{
if ( A.x >= B.x + B.w )
{
return false;
}
if ( A.x + A.w <= B.x )
{
return false;
}
if ( A.y >= B.y + B.h )
{
return false;
}
if ( A.y + A.h <= B.y )
{
return false;
}
return true;
}
void set_camera()
{
if ( stateID == STATE_LEVEL_EDITOR )
{
int x, y;
SDL_GetMouseState(&x,&y);
x += camera.x;
if ( x > camera.x + 950 )
{
camera.x += 10;
}
if ( x < camera.x + 100 )
{
camera.x -= 10;
}
if ( camera.x < 0 )
{
camera.x = 0;
}
if ( camera.x + camera.w > 2500 )
{
camera.x = 2500 - camera.w;
}
y += camera.y;
if ( y > camera.y + 700 )
{
camera.y += 10;
}
if ( y < camera.y + 100 )
{
camera.y -= 10;
}
if ( camera.y < 0 )
{
camera.y = 0;
}
if ( camera.y + camera.h > 2500 )
{
camera.y = 2500 - camera.h;
}
}
}

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