Interface.h

#include <string>


struct CharInMenu{
        int key , posx, posy;           //the key position values and the real position of the pic
        int id;                         //the id of the character
        spritegrid tex;                 //the texture stored in a custom class "spritegrid"
        int up=4321, down=4321;         //the value of the key to go to when the corressponding button is pressed
        int left=4321, right=4321;
};


//Renders textures into the screen
void BlitTexture(spritegrid griddy, int x, int y){
    glBindTexture( GL_TEXTURE_2D, griddy.grid );

    glBegin(GL_QUADS);
        glTexCoord2f(0, 0);
        glVertex2f(x, y);

        glTexCoord2f(1, 0);
        glVertex2f(x+griddy.gw, y);

        glTexCoord2f(1, 1);
        glVertex2f(x+griddy.gw, y+griddy.gh);

        glTexCoord2f(0, 1);
        glVertex2f(x, y+griddy.gh);
    glEnd();

    glColor4f(1.0f, 1.f, 1.f, 1.0f);
}

class LoadMenuStuff{
    public:
        CharInMenu Chars[100];         //chars in selection data
        spritegrid CharMenuBG;         //stores the charater menu texture
        int MenuID=10;                 //this var tells what menu you're currently on
        int Chars_index=0;
        int CharMenuBG_x=0, CharMenuBG_y=0;
        int SelectionCurr_key=0;

        int P1_INPUTDATA[8]={0, 0, 0, 0, 0, 0, 0, 0};
        int P2_INPUTDATA[8]={0, 0, 0, 0, 0, 0, 0, 0};

        LoadMenuStuff();
        void LoadIntros();
        void LoadCharacterSelection(LOAD*LOADED);
        void LoadMainMenu();
        void LoadBGSelection();
        void LoadOptions();
        void LoadCredits();
        void Update_Interface();
};

LoadMenuStuff::LoadMenuStuff(){
    //Load system.a
    fstream SYS_FILE("obj\\system.a");
    string tempqwer; //stores the the data of a statement in the tag
    string tempabcd; //stores the content of a tag inside {}
    string tempasdf; //stores the lines of a tag..etc
    string systemd;  //stores the whole text in system.a


    while (SYS_FILE.good()){
                    getline(SYS_FILE, tempasdf);
                    systemd += tempasdf; //add lines of system.a into this var
    }


    if (systemd.find("{selection_menu}")!=string::npos){ //if this tag was found in system.a
    //set tempasdf to the content of the tag
        tempasdf=systemd.substr(systemd.find("{selection_menu}")+16, systemd.find("{/selection_menu}")-16-systemd.find("{selection_menu}"));
    }

    /*Loads the menu BG from tempasdf which contains the content
    of the tag "{selection_menu}*/
    size_t tagposition=tempasdf.find("menu_bg[");                                                //store the position of the tag
    if (tagposition!=string::npos){                                                              //if this tag was found in the {selection_menu} block

        tempabcd=tempasdf.substr(tagposition+8, tempasdf.find("]", tagposition)-8-tagposition);  //copy the content of "menu_bg"
        tempasdf.erase(tagposition, tempasdf.find("]", tagposition)-tagposition+1);              //erase what copied
        tagposition=tempabcd.find("directory=");                                                 //store the position of the tag "directory="
        tempqwer=tempabcd.substr(tagposition+10, tempabcd.find(";", tagposition)-10-tagposition);//content of tag "directory="
        //Load texture to CharMenuBG
        int placeholderint;
        CharMenuBG.ini(tempqwer, 4321, 4321, 1, 1, ",-", &placeholderint /*this parameter is useless here, just a place holder*/);

        tagposition=tempabcd.find("position=");                                                  //store the position of the tag "position="
        tempqwer=tempabcd.substr(tagposition+9, tempabcd.find(";", tagposition)-9-tagposition);  //content of tag "position="
        CharMenuBG_x=Evaluate(tempqwer.substr(0, tempqwer.find(",")));                           //Evaluate the first x parameter and assign it
        CharMenuBG_y=Evaluate(tempqwer.substr(tempqwer.find(",")+1));                            //Evaluate the second y parameter and assign it

    }

    tagposition=tempasdf.find("]", tempasdf.find("[id="));
    while (tagposition!=string::npos){
        tempabcd=tempasdf.substr(tagposition+1,tempasdf.find("[/id]",tagposition)-1-tagposition);          //copy the content of "menu_bg"
        tempasdf.erase(tempasdf.find("[id="), tempasdf.find("[/id]", tagposition)-tempasdf.find("[id=")+1);//erase what copied
        tagposition=tempabcd.find("[id=");                                                                 //store the position of the tag "[id="
        tempqwer=tempabcd.substr(tagposition+4, tempabcd.find("]", tagposition)-4-tagposition);            //content of tag "[id="
        Chars[Chars_index].id=Evaluate(tempqwer);                                                          //Evaluate the parameter and assign it

        tagposition=tempabcd.find("directory=");                                                           //store the position of the tag "directory="
        tempqwer=tempabcd.substr(tagposition+10, tempabcd.find(";", tagposition)-10-tagposition);          //content of tag "directory="
        //Load texture to CharMenuBG
        int placeholderint;
        Chars[Chars_index].tex.ini(tempqwer, 4321, 4321, 1, 1, ",-", &placeholderint /*this parameter is useless here, just a place holder*/);

        tagposition=tempabcd.find("position=");                                                            //store the position of the tag "position="
        tempqwer=tempabcd.substr(tagposition+9, tempabcd.find(";", tagposition)-9-tagposition);            //content of tag "position="
        Chars[Chars_index].posx=Evaluate(tempqwer.substr(0, tempqwer.find(",")));                          //Evaluate the first x parameter and assign it
        Chars[Chars_index].posy=Evaluate(tempqwer.substr(tempqwer.find(",")+1));                           //Evaluate the second y parameter and assign it

        tagposition=tempabcd.find("key=");                                                                 //store the position of the tag "key="
        tempqwer=tempabcd.substr(tagposition+4, tempabcd.find(";", tagposition)-4-tagposition);            //content of tag "key="
        Chars[Chars_index].key=Evaluate(tempqwer);                                                         //Evaluate and assign

        tagposition=tempabcd.find("left=");                                                                //store the position of the tag "left="
        if (tagposition!=string::npos){
            tempqwer=tempabcd.substr(tagposition+5, tempabcd.find(";", tagposition)-5-tagposition);        //content of tag "left="
            Chars[Chars_index].left=Evaluate(tempqwer);                                                    //Evaluate and assign
        }

        tagposition=tempabcd.find("right=");                                                               //store the position of the tag "right="
        if (tagposition!=string::npos){
            tempqwer=tempabcd.substr(tagposition+6, tempabcd.find(";", tagposition)-6-tagposition);        //content of tag "right="
            Chars[Chars_index].right=Evaluate(tempqwer);                                                   //Evaluate and assign
        }

        tagposition=tempabcd.find("up=");                                                                  //store the position of the tag "up="
        if (tagposition!=string::npos){
            tempqwer=tempabcd.substr(tagposition+3, tempabcd.find(";", tagposition)-3-tagposition);        //content of tag "up="
            Chars[Chars_index].up=Evaluate(tempqwer);                                                      //Evaluate and assign
        }

        tagposition=tempabcd.find("down=");                                                                //store the position of the tag "down="
        if (tagposition!=string::npos){
            tempqwer=tempabcd.substr(tagposition+5, tempabcd.find(";", tagposition)-5-tagposition);        //content of tag "down="
            Chars[Chars_index].down=Evaluate(tempqwer);                                                    //Evaluate and assign
        }

        Chars_index++;                                                                                     //done, so we increment the index value
        tagposition=tempasdf.find("]", tempasdf.find("[id="));                                             //we check again if any other [id= tags exists
    }



}


void LoadMenuStuff::Update_Interface(){
    if (MenuID==10){
        BlitTexture(CharMenuBG, CharMenuBG_x, CharMenuBG_y);
        for (int indx=0; indx<Chars_index; indx++){                                    //we loop on every character on the selection
            if (SelectionCurr_key==Chars[indx].key){                                   //if this character is highlighted
                BlitTexture(Chars[indx].tex, Chars[indx].posx, Chars[indx].posy);      //we render the highligting image here.

                /*0 means that the buttons isn't held nor clicked,
                1 means that the buttons is clicked
                2 means that the buttons has been clicked but is still being held */

                P1_INPUTDATA[0]=A_UP&&P1_INPUTDATA[0]==0?1:P1_INPUTDATA[0];
                P1_INPUTDATA[0]=!A_UP&&P1_INPUTDATA[0]==2?0:P1_INPUTDATA[0];

                P1_INPUTDATA[1]=A_DOWN&&P1_INPUTDATA[1]==0?1:P1_INPUTDATA[1];
                P1_INPUTDATA[1]=!A_DOWN&&P1_INPUTDATA[1]==2?0:P1_INPUTDATA[1];

                P1_INPUTDATA[2]=A_LEFT&&P1_INPUTDATA[2]==0?1:P1_INPUTDATA[2];
                P1_INPUTDATA[2]=!A_LEFT&&P1_INPUTDATA[2]==2?0:P1_INPUTDATA[2];

                P1_INPUTDATA[3]=A_RIGHT&&P1_INPUTDATA[3]==0?1:P1_INPUTDATA[3];
                P1_INPUTDATA[3]=!A_RIGHT&&P1_INPUTDATA[3]==2?0:P1_INPUTDATA[3];


                if (Chars[indx].up!=4321){
                    if (P1_INPUTDATA[0]==1){
                        SelectionCurr_key=Chars[indx].up;
                        P1_INPUTDATA[0]=2;
                    }
                }

                if (Chars[indx].down!=4321){
                    if (P1_INPUTDATA[1]==1){
                        SelectionCurr_key=Chars[indx].down;
                        P1_INPUTDATA[1]=2;
                    }
                }

                if (Chars[indx].left!=4321){
                    if (P1_INPUTDATA[2]==1){
                        SelectionCurr_key=Chars[indx].left;
                        P1_INPUTDATA[2]=2;
                    }
                }

                if (Chars[indx].right!=4321){
                    if (P1_INPUTDATA[3]==1){
                        SelectionCurr_key=Chars[indx].right;
                        P1_INPUTDATA[3]=2;
                    }
                }
            }
        }
    }
}