ELEC2645 (2017/18) / Mbed OS el16ajm

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Snek/Snek.cpp@5:a3a9e0417e04, 2018-04-29 (annotated)

Committer:
Andrew_M
Date:
Sun Apr 29 18:03:45 2018 +0000
Revision:
5:a3a9e0417e04
Parent:
4:6353f829c56c
Child:
7:c1e0593bfc99
Food class is now a thing, the snake grows when it eats and a game over state is reached when the snake eats it's own tail with a simple animation to demonstrate the game over state has been reached

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Andrew_M 1:a14415de3ad5 1 #include "Snek.h"
Andrew_M 1:a14415de3ad5 2
Andrew_M 1:a14415de3ad5 3 // nothing doing in the constructor and destructor
Andrew_M 1:a14415de3ad5 4 Snek::Snek()
Andrew_M 1:a14415de3ad5 5 {
Andrew_M 1:a14415de3ad5 6
Andrew_M 1:a14415de3ad5 7 }
Andrew_M 1:a14415de3ad5 8
Andrew_M 1:a14415de3ad5 9 Snek::~Snek()
Andrew_M 1:a14415de3ad5 10 {
Andrew_M 1:a14415de3ad5 11
Andrew_M 1:a14415de3ad5 12 }
Andrew_M 1:a14415de3ad5 13
Andrew_M 2:9ca5e1c221c3 14 void Snek::init(int x, int y)
Andrew_M 1:a14415de3ad5 15 {
Andrew_M 1:a14415de3ad5 16 //Inital values for variables
Andrew_M 4:6353f829c56c 17 _length = 3;
Andrew_M 5:a3a9e0417e04 18
Andrew_M 5:a3a9e0417e04 19 _oldDirection = 'N';
Andrew_M 4:6353f829c56c 20
Andrew_M 4:6353f829c56c 21 for (int i = 0; i < _length; i++) {
Andrew_M 4:6353f829c56c 22 _x[i] = x;
Andrew_M 5:a3a9e0417e04 23 _y[i] = y + i;
Andrew_M 4:6353f829c56c 24 }
Andrew_M 1:a14415de3ad5 25 }
Andrew_M 1:a14415de3ad5 26
Andrew_M 2:9ca5e1c221c3 27 void Snek::update(Direction d)
Andrew_M 2:9ca5e1c221c3 28 {
Andrew_M 5:a3a9e0417e04 29 for (int i = _length-1; i >= 1; i--) {
Andrew_M 5:a3a9e0417e04 30 _x[i] = _x[i-1];
Andrew_M 5:a3a9e0417e04 31 _y[i] = _y[i-1];
Andrew_M 5:a3a9e0417e04 32 }
Andrew_M 5:a3a9e0417e04 33
Andrew_M 5:a3a9e0417e04 34 if (d == N && _oldDirection != 'S') { //checks the current direction so the snake cannot go back on itself
Andrew_M 4:6353f829c56c 35 _y[0] -= 1;
Andrew_M 3:6253a2d374fa 36 _oldDirection = 'N';
Andrew_M 5:a3a9e0417e04 37 } else if (d == S && _oldDirection != 'N') {
Andrew_M 4:6353f829c56c 38 _y[0] += 1;
Andrew_M 3:6253a2d374fa 39 _oldDirection = 'S';
Andrew_M 5:a3a9e0417e04 40 } else if (d == E && _oldDirection != 'W') {
Andrew_M 4:6353f829c56c 41 _x[0] += 1;
Andrew_M 3:6253a2d374fa 42 _oldDirection = 'E';
Andrew_M 5:a3a9e0417e04 43 } else if (d == W && _oldDirection != 'E') {
Andrew_M 4:6353f829c56c 44 _x[0] -= 1;
Andrew_M 3:6253a2d374fa 45 _oldDirection = 'W';
Andrew_M 3:6253a2d374fa 46 } else {
Andrew_M 3:6253a2d374fa 47 if (_oldDirection == 'N') {
Andrew_M 4:6353f829c56c 48 _y[0] -= 1;
Andrew_M 3:6253a2d374fa 49 } else if (_oldDirection == 'S') {
Andrew_M 4:6353f829c56c 50 _y[0] += 1;
Andrew_M 3:6253a2d374fa 51 } else if (_oldDirection == 'E') {
Andrew_M 4:6353f829c56c 52 _x[0] += 1;
Andrew_M 3:6253a2d374fa 53 } else if (_oldDirection == 'W') {
Andrew_M 4:6353f829c56c 54 _x[0] -= 1;
Andrew_M 3:6253a2d374fa 55 }
Andrew_M 5:a3a9e0417e04 56 }
Andrew_M 2:9ca5e1c221c3 57 }
Andrew_M 2:9ca5e1c221c3 58
Andrew_M 4:6353f829c56c 59 int Snek::getX(int ref)
Andrew_M 1:a14415de3ad5 60 {
Andrew_M 4:6353f829c56c 61 return _x[ref];
Andrew_M 2:9ca5e1c221c3 62 }
Andrew_M 1:a14415de3ad5 63
Andrew_M 4:6353f829c56c 64 int Snek::getY(int ref)
Andrew_M 2:9ca5e1c221c3 65 {
Andrew_M 4:6353f829c56c 66 return _y[ref];
Andrew_M 2:9ca5e1c221c3 67 }
Andrew_M 4:6353f829c56c 68
Andrew_M 4:6353f829c56c 69 int Snek::getLength()
Andrew_M 4:6353f829c56c 70 {
Andrew_M 4:6353f829c56c 71 return _length;
Andrew_M 4:6353f829c56c 72 }
Andrew_M 5:a3a9e0417e04 73
Andrew_M 5:a3a9e0417e04 74 void Snek::grow()
Andrew_M 5:a3a9e0417e04 75 {
Andrew_M 5:a3a9e0417e04 76 _length+=1;
Andrew_M 5:a3a9e0417e04 77 }