File content as of revision 3:c61d0c70eda4:

#include "Game.h"
#include "mbed.h"
#include "Gamepad.h"
#include "N5110.h"
#include "Menu.h"


Game::Game()
{
    x = 4;
    y = 4;
    for (int i = 0; i < 16; i++) {
        fruitX[i] = 3 + i*5;
    }
    for (int i = 0; i < 9; i++) {
        fruitY[i] = 3 + i*5;
    }
    score = 0;
    a = 0;                              //used to select the direction based ont what button is pressed
    ntail = 0;                          //used to increase lenght of the tail
    k = 0;
    rx = rand() % 16;
    ry = rand() % 9;
    fruitX1 = fruitX[rx]+1;
    fruitY1 = fruitY[ry]+1;
    x_pos.push_back(4);
    y_pos.push_back(4);
}

void Game::movement(Gamepad &pad)
{
    if (pad.Y_held() && !(a == 2)) {
        a = 1;
    }
    if (pad.A_held() && !(a == 1)) {
        a = 2;
    }
    if (pad.X_held() && !(a == 4)) {
        a = 3;
    }
    if (pad.B_held() && !(a == 3)) {
        a = 4;
    }
    if (a == 1) {
        x += -5;
        //wait(0.25);
    }
    if (a == 2) {
        x += 5;
        //wait(0.25);
    }
    if (a == 3) {
        y += -5;
        //wait(0.25);
    }
    if (a == 4) {
        y += 5;
        //wait(0.25);
    }

    int prevX = x_pos[0];
    int prevY = y_pos[0];

    x_pos[0] = x;
    y_pos[0] = y;

    if (!(ntail + 1 == x_pos.size())) {
        x_pos.push_back(x_pos[ntail - 1]);
        y_pos.push_back(y_pos[ntail - 1]);
    }

    if (x_pos.size() > 0) {
        for (int i = 0; i < x_pos.size() - 1; i++) {
            x_pos[x_pos.size() - i - 1] = x_pos[x_pos.size() - i - 2];
            y_pos[y_pos.size() - i - 1] = y_pos[y_pos.size() - i - 2];
        }
        x_pos[1] = prevX;
        y_pos[1] = prevY;
    }
}

int Game::death(N5110 &lcd,Gamepad &pad)
{
    if (x < 1 || x > WIDTH-2) {                                 //if you hit the side walls you die
        while (1) {
            gameover(lcd, pad);
            if (pad.B_held()) {
                return 2;
            }
            if (pad.start_held()) {
                return 1;
            }
        }
    }

    if (y < 1 || y > HEIGHT) {                                  //if you hit the top or bottom walls you die
        while (1) {
            gameover(lcd, pad);
            if (pad.B_held()) {
                return 2;
            }
            if (pad.start_held()) {
                return 1;
            }
        }
    }
    for (int i = 1; i < x_pos.size(); i++) {                    //if you hit your tail you die
        if (x_pos[0] == x_pos[i] && y_pos[0] == y_pos[i]) {
            while (1) {
                gameover(lcd, pad);
                if (pad.B_held()) {
                    return 2;
                }
                if (pad.start_held()) {
                    return 1;
                }
            }
        }
    }
    return 0;
}

void Game::draw(N5110 &lcd,Gamepad &pad)
{
    lcd.clear();
    lcd.drawRect(1,1,WIDTH-2,HEIGHT-1,FILL_TRANSPARENT);    //rectangle around border of field
    lcd.drawRect(fruitX[rx],fruitY[ry],3,3,FILL_BLACK);     //fruit on the field
    lcd.drawCircle(x,y,2,FILL_TRANSPARENT);                 //initial snake design
    //printf("size of vector %d\n", x_pos.size());
    for (k = 1; k <= ntail; k++) {
        lcd.drawCircle(x_pos[k],y_pos[k],2,FILL_TRANSPARENT);
        //printf("draw \n");
    }
    //printf("/////////////// \n");
    //printf("Fruit x coordinate: %d\n", fruitX1);
    //printf("Fruit y coordinate: %d\n", fruitY1);
    //printf("Snake x: %d\n", x);
    //printf("Snake y: %d\n", y);
    //printf("seg1 x: %d\n", x_pos[1]);
    //printf("seg1 y: %d\n", y_pos[1]);
    lcd.refresh();
}

void Game::gameover(N5110 &lcd,Gamepad &pad)
{
    lcd.clear();
    //while (1) {
    lcd.printString("GAME OVER",WIDTH/2-25,0);
    sprintf (buffer, "Score: %d",score);
    lcd.printString(buffer,WIDTH/2-26,2);
    lcd.printString("TO PLAY AGAIN",3,4);
    lcd.printString("PRESS B",17,5);
    pad.leds_on();
    wait(0.1);
    pad.leds_off();
    wait(0.1);
    pad.tone(500.0,1);
    lcd.refresh();
    wait(1/6);
    // if ( _pad.B_held()) {
    //break;
    //}
    //}
    /*wait(1/6);
    _lcd.clear();
    //_menu.menu_screen();
    _lcd.refresh();
    wait(1/6);*/
}

void Game::point(N5110 &lcd,Gamepad &pad)
{
    if (x == fruitX1 && y == fruitY1) {             //if central coordinate of the snake head is equal to the central coordinate of the food:
        //printf("Snake x: %d\n", x);
        //printf("Snake y: %d\n", y);
        //printf("seg1 x: %d\n", x_pos[1]);
        //printf("seg1 y: %d\n", y_pos[1]);
        //printf("Fruit x coordinate: %d\n", fruitX1);
        //printf("Fruit y coordinate: %d\n", fruitY1);
        score = score + 10;
        pad.tone(750.0,1);
        rx = rand() % 16;                           //generates a new random coordinate for the food
        ry = rand() % 9;
        //printf("rx: %d\n", rx);
        //printf("ry: %d\n", ry);
        fruitX1 = fruitX[rx]+1;
        fruitY1 = fruitY[ry]+1;
        for (int i = 0; i < x_pos.size(); i++) {
            if (fruitX1 == x_pos[i] && fruitY1 == y_pos[i]) {
                rx = rand() % 16;
                ry = rand() % 9;
                fruitX1 = fruitX[rx]+1;
                fruitY1 = fruitY[ry]+1;
            }
        }
        ntail++;
        lcd.drawRect(fruitX[rx],fruitY[ry],3,3,FILL_BLACK);
        //_lcd.refresh();
        //wait(1/6);
    }
}