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#include <ui.h>
#include <world.h> // World-switching stuff
#include <ft2build.h> // FreeType stuff
#include FT_FREETYPE_H
#define SDL_KEY e.key.keysym.sym // Keeps the code neater :)
extern Player *player; // 'player' should be (must be) defined in main.cpp
extern World *currentWorld; // should/must also be defined in main.cpp
static FT_Library ftl; // Variables for the FreeType library and stuff
static FT_Face ftf;
static GLuint ftex;
static bool dialogBoxExists=false;
static char *dialogBoxText;
namespace ui {
vec2 mouse;
bool debug=false;
unsigned int fontSize;
/*
* initFonts(), setFontFace(), and setFontSize() are pretty self-explanatory
*/
void initFonts(void){
if(FT_Init_FreeType(&ftl)){
std::cout<<"Error! Couldn't initialize freetype."<<std::endl;
abort();
}
fontSize=12; // to be safe
}
void setFontFace(const char *ttf){
if(FT_New_Face(ftl,ttf,0,&ftf)){
std::cout<<"Error! Couldn't open "<<ttf<<"."<<std::endl;
abort();
}
}
void setFontSize(unsigned int size){
fontSize=size;
FT_Set_Pixel_Sizes(ftf,0,fontSize);
}
float putChar(float x,float y,char c){
unsigned int j;
char *buf;
float w,h;
// Load the first/next character (if possible)
if(FT_Load_Char(ftf,c,FT_LOAD_RENDER)){
std::cout<<"Error! Unsupported character "<<c<<" ("<<(int)c<<")."<<std::endl;
abort();
}
// Load the bitmap with OpenGL
glActiveTexture(GL_TEXTURE0);
glGenTextures(1,&ftex);
glBindTexture(GL_TEXTURE_2D,ftex);
glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_CLAMP_TO_EDGE);
glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_CLAMP_TO_EDGE);
glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
glPixelStorei(GL_UNPACK_ALIGNMENT,1);
/*
* ftf->glyph->bitmap.buffer simply stores a bitmap of the character,
* and if OpenGL tries to load it directly it'll mistake it as a simple
* red on black texture. Here we allocate enough space to convert this
* bitmap to an RGBA-type buffer, also making the text white on black.
*
* TODO: allow different colors
*/
buf=(char *)malloc(ftf->glyph->bitmap.width*ftf->glyph->bitmap.rows*4);
for(j=0;j<ftf->glyph->bitmap.width*ftf->glyph->bitmap.rows;j++){
buf[j*4]=255;
buf[j*4+1]=255;
buf[j*4+2]=255;
buf[j*4+3]=ftf->glyph->bitmap.buffer[j]?255:0;
}
glTexImage2D(GL_TEXTURE_2D,0,GL_RGBA,ftf->glyph->bitmap.width,ftf->glyph->bitmap.rows,0,GL_RGBA,GL_UNSIGNED_BYTE,buf);
// Draw the texture and move the cursor
w=ftf->glyph->bitmap.width;
h=ftf->glyph->bitmap.rows;
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D,ftex);
switch(c){
case '^':
case '*':
case '`':
case '\'':
case '\"':
case '-':y+=fontSize/3;break;
case '~':
case '<':
case '>':
case '+':
case '=':y+=fontSize/5;break;
case 'g':
case 'q':
case 'y':
case 'p':
case 'j':y-=fontSize/4;break;
default:break;
}
glBegin(GL_QUADS);
glColor3ub(255,255,255);
glTexCoord2f(0,1);glVertex2f(x,y);
glTexCoord2f(1,1);glVertex2f(x+w,y);
glTexCoord2f(1,0);glVertex2f(x+w,y+h);
glTexCoord2f(0,0);glVertex2f(x,y+h);
glEnd();
glDisable(GL_TEXTURE_2D);
// Free the RGBA buffer and the OpenGL texture
free(buf);
glDeleteTextures(1,&ftex);
return w;
}
void putString(const float x,const float y,const char *s){
unsigned int i=0,j;
float xo=x,yo=y;
do{
if(s[i]=='\n'){
yo-=fontSize*1.05;
xo=x;
}else if(s[i]==' '){
xo+=fontSize/2;
}else{
xo+=putChar(xo,yo,s[i])+fontSize*.1;
}
}while(s[i++]);
}
void putText(const float x,const float y,const char *str,...){ // putText() simply runs 'str' and the extra arguments though
va_list args; // vsnprintf(), which'll store the complete string to a buffer
char *buf; // that's then passed to putString()
buf=(char *)calloc(128,sizeof(char));
va_start(args,str);
vsnprintf(buf,128,str,args);
va_end(args);
putString(x,y,buf);
free(buf);
}
void dialogBox(const char *name,const char *text,...){
unsigned int name_len;
va_list dialogArgs;
va_start(dialogArgs,text);
dialogBoxExists=true;
if(dialogBoxText){
free(dialogBoxText);
dialogBoxText=NULL;
}
dialogBoxText=(char *)calloc(512,sizeof(char));
name_len=strlen(name);
strcpy(dialogBoxText,name);
strcpy(dialogBoxText+strlen(name),": ");
vsnprintf(dialogBoxText+name_len+2,512-name_len-2,text,dialogArgs);
va_end(dialogArgs);
}
void draw(void){
float x,y;
if(dialogBoxExists){
glColor3ub(0,0,0);
x=player->loc.x-SCREEN_WIDTH/2+HLINE*8;
y=SCREEN_HEIGHT-HLINE*8;
glRectf(x,y,x+SCREEN_WIDTH-HLINE*16,y-SCREEN_HEIGHT/4);
setFontSize(16);
putString(x+HLINE,y-fontSize-HLINE,dialogBoxText);
}
}
void handleEvents(void){
static bool left=false,right=false;
SDL_Event e;
while(SDL_PollEvent(&e)){
switch(e.type){
case SDL_QUIT:
gameRunning=false;
break;
case SDL_MOUSEMOTION:
mouse.x=e.motion.x;
mouse.y=e.motion.y;
break;
case SDL_MOUSEBUTTONDOWN:
if((e.button.button&SDL_BUTTON_RIGHT)&&dialogBoxExists){
dialogBoxExists=false;
dialogBoxText=NULL;
}
break;
/*
KEYDOWN
*/
case SDL_KEYDOWN:
if(SDL_KEY==SDLK_ESCAPE)gameRunning=false; // Exit the game with ESC
if(SDL_KEY==SDLK_a){ // Move left
left=true;
player->vel.x=-.15;
currentWorld=currentWorld->goWorldLeft(player);
}
if(SDL_KEY==SDLK_d){ // Move right
right=true;
player->vel.x=.15;
currentWorld=currentWorld->goWorldRight(player);
}
if(SDL_KEY==SDLK_s && player->ground==2){
player->ground=false;
player->loc.y-=HLINE*1.5;
}
if(SDL_KEY==SDLK_w)currentWorld=currentWorld->goInsideStructure(player);
if(SDL_KEY==SDLK_SPACE){ // Jump
if(player->ground){
player->vel.y=.5;
player->loc.y+=HLINE*2;
player->ground=false;
}
}
if(SDL_KEY==SDLK_i)currentWorld=currentWorld->goWorldBack(player); // Go back a layer if possible
if(SDL_KEY==SDLK_k)currentWorld=currentWorld->goWorldFront(player); // Go forward a layer if possible
if(SDL_KEY==SDLK_F3)debug^=true;
if(SDL_KEY==SDLK_LSHIFT)player->speed = 3;
break;
/*
KEYUP
*/
case SDL_KEYUP:
if(SDL_KEY==SDLK_a)left=false; // Stop the player if movement keys are released
if(SDL_KEY==SDLK_d)right=false;
if(!left&&!right)player->vel.x=0;
if(SDL_KEY==SDLK_LSHIFT)player->speed = 1;
break;
default:
break;
}
}
}
}
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