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funcs.cpp
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funcs.cpp
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#ifdef USE_ALLEGRO
#include <allegro.h>
#endif
#ifdef USE_SDL
#include <SDL.h>
#endif
#include "funcs.h"
#include "globals.h"
#include <vector>
#include <string>
#include <string.h>
#include <algorithm>
#include "file-system.h"
#include "bitmap.h"
#include "font.h"
#include "init.h"
#include <sstream>
#ifndef USE_ALLEGRO
/* FIXME: move this to the filesystem module */
#include "sfl/sfl.h"
#include "sfl/sflfile.h"
#endif
#ifndef WINDOWS
#include <unistd.h>
#endif
#ifdef max
#undef max
#endif
#ifdef min
#undef min
#endif
using namespace std;
/* remove this once cmake and scons properly set DATA_PATH */
#ifndef DATA_PATH
#define DATA_PATH "data"
#endif
/* the build system should define DATA_PATH */
static string dataPath = DATA_PATH;
const double Util::pi = 3.14159265;
double Util::radians(double degree){
return degree * pi / 180.0;
}
/*
inline int rnd( int q ){
if ( q <= 0 ) return 0;
return (int)( rand() % q );
}
*/
int Util::max(int a, int b){
if (a>b){
return a;
}
return b;
}
/*
int Util::min(int a, int b){
if (a<b){
return a;
}
return b;
}
*/
int Util::clamp(int value, int min, int max){
return Util::min(Util::max(value, min), max);
}
int Util::rnd( int q, int min, int range ){
return q - min + rnd( range );
}
int Util::rnd( int min, int max ){
return rnd( max - min ) + min;
}
/* sleep for `x' milliseconds */
void Util::rest( int x ){
#ifdef USE_ALLEGRO
::rest(x);
#endif
#ifdef USE_SDL
SDL_Delay(x);
#endif
}
void Util::restSeconds(double x){
Util::rest((int)(x * 1000));
}
bool Util::checkVersion(int version){
if (version == Global::getVersion()){
return true;
}
/* when an incompatible version is made, add a check here, like
* version < getVersion(3, 5)
* would mean any client below version 3.5 is incompatible.
*
* assume versions of client's greater than ourself is compatible, but
* this may not be true. There is no way to check this.
*/
if (version < 0){
return false;
}
return true;
}
void Util::setDataPath( const string & str ){
dataPath = str;
}
Filesystem::AbsolutePath Util::getDataPath2(){
return Filesystem::AbsolutePath(dataPath + "/");
}
bool Util::exists( const string & file ){
#ifdef USE_ALLEGRO
return ::exists(file.c_str()) != 0;
#else
return file_exists(file.c_str());
#endif
}
/*
vector<Filesystem::AbsolutePath> Util::getFiles(const Filesystem::AbsolutePath & dataPath, const string & find){
return Filesystem::getFiles(dataPath, find);
}
*/
void Util::blend_palette(int * pal, int mp, int startColor, int endColor ) {
/*
ASSERT(pal);
ASSERT(mp != 0);
*/
int sc_r = Bitmap::getRed(startColor);
int sc_g = Bitmap::getGreen(startColor);
int sc_b = Bitmap::getBlue(startColor);
int ec_r = Bitmap::getRed(endColor);
int ec_g = Bitmap::getGreen(endColor);
int ec_b = Bitmap::getBlue(endColor);
for ( int q = 0; q < mp; q++ ) {
float j = (float)( q + 1 ) / (float)( mp );
int f_r = (int)( 0.5 + (float)( sc_r ) + (float)( ec_r-sc_r ) * j );
int f_g = (int)( 0.5 + (float)( sc_g ) + (float)( ec_g-sc_g ) * j );
int f_b = (int)( 0.5 + (float)( sc_b ) + (float)( ec_b-sc_b ) * j );
pal[q] = Bitmap::makeColor( f_r, f_g, f_b );
}
}
string Util::trim(const std::string & str){
string s;
size_t startpos = str.find_first_not_of(" \t");
size_t endpos = str.find_last_not_of(" \t");
// if all spaces or empty return an empty string
if ((string::npos == startpos) ||
(string::npos == endpos)){
return "";
} else {
return str.substr(startpos, endpos-startpos+1);
}
return str;
}
/* makes the first letter of a string upper case */
string Util::upcase(std::string str){
if ( str.length() > 0 && (str[0] >= 'a' && str[0] <= 'z') ){
str[0] = str[0] - 'a' + 'A';
}
return str;
}
static int lowerCase(int c){
return tolower(c);
}
static int upperCase(int c){
return toupper(c);
}
string Util::upperCaseAll(std::string str){
std::transform(str.begin(), str.end(), str.begin(), upperCase);
return str;
}
string Util::lowerCaseAll(std::string str){
std::transform(str.begin(), str.end(), str.begin(), lowerCase);
/*
for (unsigned int i = 0; i < str.length(); i++){
if (str[0] >= 'A' && str[0] <= 'Z'){
str[0] = str[0] - 'A' + 'a';
}
}
*/
return str;
}
/*Gets the minimum of three values*/
static int minimum(int a,int b,int c){
int min=a;
if(b<min)
min=b;
if(c<min)
min=c;
return min;
}
/* Compute levenshtein distance between s and t
* from: http://www.merriampark.com/ldc.htm
*/
static int levenshtein_distance(const char *s, const char *t){
//Step 1
int k,i,j,n,m,cost,distance;
int * d;
n=strlen(s);
m=strlen(t);
if(n!=0&&m!=0){
d = (int*) malloc((sizeof(int))*(m+1)*(n+1));
m++;
n++;
//Step 2
for(k=0;k<n;k++)
d[k]=k;
for(k=0;k<m;k++)
d[k*n]=k;
//Step 3 and 4
for(i=1;i<n;i++)
for(j=1;j<m;j++)
{
//Step 5
if(s[i-1]==t[j-1])
cost=0;
else
cost=1;
//Step 6
d[j*n+i]=minimum(d[(j-1)*n+i]+1,d[j*n+i-1]+1,d[(j-1)*n+i-1]+cost);
}
distance=d[n*m-1];
free(d);
return distance;
} else {
return -1; //a negative return value means that one or both strings are empty.
}
}
int Util::levenshtein(const std::string & str1, const std::string & str2){
return levenshtein_distance(str1.c_str(), str2.c_str());
}
void Util::limitPrintf(char * buffer, int size, const char * format, va_list args){
#ifdef USE_ALLEGRO
uvszprintf(buffer, size, format, args);
#else
vsnprintf(buffer, size, format, args);
#endif
}
#ifndef WINDOWS
int Util::getPipe(int files[2]){
return pipe(files);
}
#endif
void Util::showError(const Bitmap & screen, const Exception::Base & exception, const string & info){
screen.BlitFromScreen(0, 0);
Bitmap error(screen.getWidth() - 100, screen.getHeight() - 100);
error.fill(Bitmap::darken(Bitmap::makeColor(160, 0, 0), 3));
error.border(1, 2, Bitmap::makeColor(240, 0, 0));
const Font & font = Font::getFont(Global::DEFAULT_FONT, 17, 17);
int y = 10;
std::ostringstream out;
out << info;
out << " " << exception.getTrace();
font.printfWrap(10, 10, Bitmap::makeColor(240, 240, 240), error, error.getWidth() - 20, out.str(), 0);
Global::debug(0) << out.str() << std::endl;
Bitmap::transBlender(0, 0, 0, 220);
error.drawTrans(50, 50, screen);
screen.BlitToScreen();
}
void Util::showError(const Exception::Base & exception, const std::string & info){
Bitmap screen(GFX_X, GFX_Y);
showError(screen, exception, info);
}

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funcs.cpp (6 KB)

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