File content as of revision 4:2fdafb53eac2:

/*****************************************************
        Libraries and modules used                   *
******************************************************/
#include "mbed.h"
#include "Gamepad.h"
#include "N5110.h"
#include "Character.h"
#include "Obstacles.h"
#include "Gems.h"
#include "SDFileSystem.h"


#define No_OBS 8
#define No_GEMS 4

//Variables
// i - to loop through the obstacles
// j - to loop through the gems
// counter - to keep track of score
// highScore - to store high score
int i,j,counter,highScore;

//To helo convert counter(int) to string to display on the screen
 char score[50];

//Structs
struct UserInput {
    Direction d;
    float mag;
};
/*            Class Objects                         */
N5110 lcd(PTC9,PTC0,PTC7,PTD2,PTD1,PTC11);
Gamepad pad;
Character c;
Obstacles obstacle[No_OBS];
Gems gems[No_GEMS];

SDFileSystem sd(PTE3,PTE1,PTE2,PTE4,"sd");
FILE *file;


/*            Function Prototypes                    */
void init();
void update_game(UserInput input);
void render();
void welcome();
void menu();
void over();
void Instructions();
void stickRunner();
void displayHighScore();
/*            Functions                              */

int main()
{
 
 
/*            Intialization                           */
    init();
    
/*      Drawing the intial frame                      */    
    welcome();
    
}


void init()
{
//Need to initialize the lcd and gamepad
    lcd.init();
    pad.init();
    
//Intialzing the charachter
    c.init();
    
//Intialzing the obstacles
    for(i=0;i<No_OBS;i++)
    {
       obstacle[i].init();
    }

//Intialzing the gems
    for(j=0;j<No_GEMS;j++)
    {
       gems[j].init();
    }
     
   

}



//Funstion to display the Welcome page
void welcome() {
    
   
    
    lcd.printString("Stick Runner!    ",0,1);  
    lcd.printString(" Press Start ",0,4);
    lcd.refresh();
   // pad.tone(1500.0,0.5);
   // pad.tone(1500.0,0.5);
      
     
   //Flashes LEDS aslong as START is not pressed
    while ( pad.check_event(Gamepad::START_PRESSED) == false) 
    {
        pad.leds_on();
        wait(0.1);
        pad.leds_off();
        wait(0.1);
       
    }
     
    menu();
}



//Function to display the Menu page
void menu() {
    //int fps =8;
     bool i = true;
    
        lcd.clear();
    lcd.printString("     Menu       ",0,0);  
    lcd.printString("A)New Game     ",0,2);
    lcd.printString("B)Continue     ",0,3);
    lcd.printString("X)Instructions ",0,4);
    lcd.printString("Y)High Score   ",0,5);
    
    lcd.refresh();
    
    
    while(i == true) {
    // wait flashing LEDs until start button is pressed 
    //Condition to start a new game
     if( pad.check_event(Gamepad::A_PRESSED) ) {
       //pad.tone(1000.0,0.5);
       i = false;
       
       //Clear, refresh and intialize the game again so we can start a new game
        lcd.clear();
       lcd.refresh();
       init();
       stickRunner();
       
        //break;
    }
    
    //To continue the same game 
   else if( pad.check_event(Gamepad::B_PRESSED) ) {
       //lcd.clear();
       // pad.tone(1000.0,0.5);
       i = false;
       
       //Simply refreshes the page and continues from where the user left the game
       // as the intialize function init() is not called again 
       lcd.refresh();
       stickRunner();
       
       
    }
    
    //To read the game instructions
    else if( pad.check_event(Gamepad::X_PRESSED) ) {
      // pad.tone(1000.0,0.5);
      Instructions();
         
       i = false;
    }
    
    //To see the game high score
    else if( pad.check_event(Gamepad::Y_PRESSED) ) {
      //pad.tone(1000.0,0.5);
      displayHighScore();
        
       i = false;
    }
    
    
 }
}




//This function is responsible for running the game 
void stickRunner()
{
     int fps = 8;  
   
    render();  
    wait(1.0f/fps);  

/*   Main game loop to read input, render the display and update the game state            */
   
    while (1) {
         
         //As long as the character survives  update the score 
        counter++;
        
        //Using the gamepad library to move the character using the joystick
        c.updateCharacter(pad.get_direction(),pad.get_mag());
        
        //Condition to ckeck if the user wants to pause the game
        if(pad.check_event(Gamepad::BACK_PRESSED))
        {
            lcd.clear(); 
            lcd.refresh(); 
            menu();
        }
        
        //Loop to make the generation of obstacles a continious loop and also to check if the user has been killed
        for(i=0;i<No_OBS;i++)
        {
            //To retrieve the status of the obstacle on the screen
            obstacle[i].obstacleStatus(obstacle[i].getObstaclePos());
            
            if(obstacle[i].getObstacleStatus() == false)
            {
                obstacle[i].init();
            }
            
            //To check whether the character has been hit by an obstacle by comparing the position of each obstacle
            // relative to the character 
                c.characterStatus(obstacle[i].getObstaclePos());
              
                
        }
        
         //Loop to make the generation of gems a continious loop and also to check if the user has collected them
        for(j=0;j<No_GEMS;j++)
        {
             //To check whether the character has collected a gem by comparing the position of each gem
            // relative to the character 
            gems[j].gemStatus(c.getCharacterPos());
                 
                 
            
            if(gems[j].getGemStatus() == false)
            {
                gems[j].init();
                
            }
            
          
        }
        
        //To make the obstacles and gems move along the screen 
        
        
        i =0;
        
        for(i=0;i<No_OBS;i++)
        {
              obstacle[i].updateObstacle();
        }
         
        
        j =0;
        
        for(j=0;j<No_GEMS;j++)
        {
               gems[j].updateGems();
              
        }
            
        render();
       
        wait(1.0f/fps);
    }
    
}


//Function to draw out the pixels on the screen
void render()
{
    
    lcd.clear();  
    
    
    //Only draws the character as long as it survives
     if(c.getCharacterStatus())
     {  
        c.draw(lcd);
     }
     
      if(c.getCharacterStatus() == false)
   {
      over();
   }
   
   
    //Draws the obstacles if the status returned is true
    
    for(i=0;i<No_OBS;i++)
    {
       if(obstacle[i].getObstacleStatus())
       {
          obstacle[i].draw(lcd);
       }
    }
            
    //Draws the gems if the status returned is true   
   for(j=0;j<No_GEMS;j++)
    {
      if(gems[j].getGemStatus())
      { 
         gems[j].draw(lcd);
        
      }
      
     
               
    }
      
            
  
   
   
    lcd.refresh();

}



//Function to display end of game and also check whether the user got a new highscore and if not write it on the SD card
void over() {
    //pad.tone(1000.0,0.5);
    pad.init();
   // lcd.init();
   // lcd.clear();
   
   //Mounting on the SD card to read/write in it
    //sd.mount();
   
    //Converting the counter into a string 'score' to display on the lcd
    sprintf (score, " Score : %d",counter);

    lcd.printString(score,0,2);
    lcd.printString("GAME  OVER!!  ",0,0);  
    //lcd.printString("     ",0,1);
    
    //Opening file on the SD card
    /*file = fopen("/sd/scoreFile.txt", "r");
    
    //If file is empty and score to it and display it as the High Score
    if(file ==NULL)
    {
        file = fopen("/sd/scoreFile.txt", "w");
        fprintf(file,"%d",counter);
        fclose(file);
         lcd.printString("HIGH SCORE",0,3);
        
    }
    
    //if not empty compare against the exsisting high score and display whether the user has made a new high score 
    else{
            fscanf(file,"%d", &highScore);
            fclose(file);
            
            if(counter>highScore)
            {
                
                file = fopen("/sd/scoreFile.txt", "w");
        fprintf(file,"%d",counter);
        fclose(file);
         lcd.printString("HIGH SCORE",0,3);
            }
        
        }*/
        
   
    lcd.printString(" PRESS START  ",0,5);  
    
    lcd.refresh();
    //sd.unmount();
     
    //Takes the user back to the main for a new game
    while ( pad.check_event(Gamepad::START_PRESSED) == false) {
        pad.leds_on();
        //pad.tone(1000.0,0.5);
        wait(0.1);
        pad.leds_off();
       // pad.tone(1000.0,0.5);
        wait(0.1);
        if( pad.check_event(Gamepad::START_PRESSED)) {
            main();
            wait(1);
            }
    }
 
}


//Function to display the current High score fo the game and also reset it to 0
void displayHighScore()
{
    sd.mount();
    lcd.clear();
      
   //Open file
     file = fopen("/sd/scoreFile.txt", "r");
     if(file ==NULL)
    {   
    
        highScore = 0;
        
    }
    else{ 
        //Read the high score from the file
            fscanf(file,"%d", &highScore);
            fclose(file);
        
        } 
     //Convert highscore(int) to score(String) to print on the lcd   
    sprintf (score, "High Score : %d",highScore);

    lcd.printString(score,0,2);
    lcd.printString(" START - reset  ",0,4); 
    lcd.printString(" BACK - menu   ",0,5);  
      lcd.refresh();
      sd.unmount();
      
      while(1)
      {
          //To reset the highscore 
          if( pad.check_event(Gamepad::START_PRESSED)) {
             sd.mount();
             file = fopen("/sd/scoreFile.txt", "r");
            if(!file ==NULL)
                {   //Delete the file if it is empty
                    fclose(file);
                     remove("/sd/scoreFile.txt");
                      
                }
                 sd.unmount();
                    displayHighScore();
            
            }
            //Back to menu
             if( pad.check_event(Gamepad::BACK_PRESSED)) {
                        menu();
            }
            
            sleep();
          
      }
    
       
}



//Function to display the Instructions for the game
void Instructions()
{
     bool i = true;
     lcd.clear();
       lcd.printString("INSTURCTIONS:     ",0,0);  
       lcd.printString("Collect the       ",0,2);
       lcd.printString("gems and dodge    ",0,3);
       lcd.printString("the obstacles     ",0,4);
       lcd.printString("to get points     ",0,5);
       lcd.refresh();
       
       while(i == true){
        
        if( pad.check_event(Gamepad::BACK_PRESSED) ) {
             //pad.tone(1000.0,0.5);
            i = false;
      menu();
    }
      }
    
    }