File content as of revision 8:721a8dca7a25:

#include "Snake.h"


#define WIDTH 84
#define HEIGHT 48
#define CEILING 8
#define FLOOR 48

snakePart snak;
int LIFE[7][7] = {
    
    {0,1,0,0,0,1,0},
    {1,1,1,0,1,1,1},
    {1,1,1,1,1,1,1},
    {0,1,1,1,1,1,0},
    {0,0,1,1,1,0,0},
    {0,0,0,1,0,0,0},
    };


Snake::Snake()
{

}
Snake::~Snake()
{
  
}

/************************Functions************************/

void Snake::init(int x, int y, int length, int _live){//initalizing the starting variables     
    live=_live;
    _length = length;    
    _food.init();
    initx=x;
    inity=y;
    initl=length;
    snak._x[0] = x;
    snak._y[0] = y;
    snak._dirc[0] = length;
    for (int i=1; i < _length ;i++)
    {   
        snak._x[i]=snak._x[0]+i;
        snak._y[i]=snak._y[0];
        snak._dirc[i]=1;
    }
    snak._x[_length]=x+_length;
    snak._y[_length]=y;
    snak._dirc[_length]=1;
}

void Snake::drawsnake(N5110 &lcd){
        check_WallCollision(lcd);// if head==wall game over
        check_TailCollision(lcd);
            if (live!=0){
                lcd.clear();
                waitExpect=((float)_length/3)+5;//set wait so the game is speeding up
                waitTime=(1/(waitExpect+_speed));
                wait(waitTime);                
                _food.drawfood(lcd);//make first food
                lcd.drawRect(0,8,84,48-8,FILL_TRANSPARENT);//draw arena
                drawscore(lcd);
                for ( int i=0; _length>i;i++){//draw snake
                    
                                    lcd.setPixel(snak._x[i],snak._y[i]);
                        
                
                lcd.refresh();
                }
       }
       
}
void Snake::snakemov(Gamepad &pad){
     
     if (live!=0){
    
            d=pad.get_direction();
    
            if (snak._dirc[_length-1]==1)//set direction according _dir
                {
                    snak._x[_length]++;                    
                }
            
            if (snak._dirc[_length-1]==2)
                {
                    snak._y[_length]--;
                
                }
            
            if (snak._dirc[_length-1]==3)
                {
                    snak._x[_length]--;                    
                }
                
            if (snak._dirc[_length-1]==4)
                {
                    snak._y[_length]++;                                        
                }
            
            for (int i=0 ;_length<i ;i++)
                {                      
                    snak._x[i]=snak._x[i+1];
                    snak._y[i]=snak._y[i+1];
                    //printf("done");                    
                }
            //check dpad which way it is pointing
            //set direction accordingly, 1 is right, up is 2, 3 is left and 4 is down        
            if (d==N){// if stick points up, go up
                
                        if (snak._dirc[_length-1]!=4)
                            {
                                snak._dirc[_length-1] = 2;                                
                            }

            }
            
            if (d==E){// if stick points right, go right
                
                        if (snak._dirc[_length-1]!=3)
                            {
                                snak._dirc[_length-1] = 1;                                
                            }
                
                }
                
            if (d==W){// if stick points left, go left
                
                        if (snak._dirc[_length-1]!=1)
                            {
                                snak._dirc[_length-1] = 3;
                            }
                
                
                }
                
            if (d==S){// if stick points down, go down 
                
                        if (snak._dirc[_length-1]!=2)
                            {
                                snak._dirc[_length-1] = 4;
                            }
                
                
                }
        
            printf("updated ");
            eat();
        }//live loop
}//end of update

void Snake::eat(){
    
    Foodpos foodPos = _food.returnPos();
    if(snak._x[_length-1]==foodPos.x && snak._y[_length-1]== foodPos.y)
        {
            snak._x[_length+1]=snak._x[_length];//-1
            snak._y[_length+1]=snak._y[_length];
            snak._dirc[_length+1]=snak._dirc[_length-1];
            _length=_length+1;//if head == food, _length++
            _food.createfood();//spawn new food
        }
}//end of addPoint

void Snake::dead(N5110 &lcd){
        
       
        live--; //take a life away
        //while (live==0){//dead reset game
        while(live==0) {
            lcd.clear();
            lcd.printString("Game Over",0,1);
            lcd.printString("Press Reset",0,2);
            lcd.printString("To restart",0,3);
            lcd.refresh(); 
        }
        init(initx,inity,initl,live);
//end of deadSnake
}
        
void Snake::check_WallCollision(N5110 &lcd){
    
    if (snak._x[_length] == 0 || snak._x[_length] == WIDTH)//if snake head hits side walls
        {     
            dead(lcd);
        }
    if (snak._y[_length]== FLOOR ||snak._y[_length]== CEILING )//if snake hits top or bottom walls
        {     
            dead(lcd);
        }
    
}//end of checkWallCollision

void Snake::check_TailCollision(N5110 &lcd){//if snake eats itself
    for (int i=0 ;_length<i ;i++){
                                          
                    if (snak._x[_length-1]==snak._x[i] && snak._y[_length-1]==snak._y[i])
                        {
                            dead(lcd);
                        }
                }
    
    
}//end of checkTailCollision

void Snake::drawscore(N5110 &lcd){
        char buffer1[14];
        char buffer2[14];
        sprintf(buffer1,"%2d",live);
        sprintf(buffer2,"%2d",_length-5);
        lcd.printString(buffer1,20,0);
        lcd.printString(buffer2,70,0);
        lcd.drawSprite(6,1,7,7,(int *)LIFE);
        lcd.printString(":",17,0);
        lcd.printString("Score:",40,0);//display life and points
    
}//end of drawScore