snake.h

00001 
00002 #ifndef SNAKE_H
00003 #define SNAKE_H
00004 
00005 #include "mbed.h"
00006 #include "N5110.h"
00007 #include "Gamepad.h"
00008 
00009 /** Snake Class
00010 * Owen Cavender, University of Leeds
00011 */
00012 
00013 class Snake
00014 {
00015 
00016 
00017 public:
00018     Snake();
00019     /** constructor
00020     */
00021     ~Snake();
00022     /** deconstructor
00023     */
00024 
00025     enum Directions {           /**enum of directions*/
00026         up,
00027         down,
00028         left,
00029         right,
00030 
00031     };
00032 
00033     void init();
00034     /** initialises 'Snake' class
00035     */
00036     void get_direction(Gamepad &pad);
00037     /** reads input from gamepad
00038     *updates direction
00039     */
00040     void render_clear_tail(N5110 &lcd);
00041     /** clears pixel on the end of snake
00042     *before everything else on the screen is updated and rendered
00043     */
00044     void move_snake();
00045     /**alters the values assigned to the snake's body
00046     *based on the _direction set in get_direction
00047     */
00048     void apple_collected(N5110 &lcd, Gamepad &pad);
00049     /** check to see if the apple x,y = snakehead x,y values
00050     *increases score, triggers a true which causes generation of apple, updates counter
00051     *Plays a tone and toggles LEDs
00052     */
00053     void check_gameover(N5110 &lcd);
00054     /**checks if game is over based on 3 conditions
00055     */
00056     void get_Apple_position(N5110 &lcd);
00057     /**sets the apple position
00058     *an update of position is triggered by bool _reset_apple
00059     */
00060     void render(N5110 &lcd, Gamepad &pad);
00061     /**draws the snake, border, and apple during the game
00062     * if it is game over, it displays the score and a gameo over message
00063     */
00064 
00065 
00066 
00067     Vector2D get_Snakehead();
00068     /**returns _x0, and _y0 values
00069     */
00070 
00071     int get_countdown();
00072     /**reurns counter value
00073     */
00074     int get_score();
00075     /**returns score;
00076     */
00077 
00078 private:
00079 
00080 
00081     bool get_gameover();
00082     /** returns _gameover
00083     *private as it is only used in Snake class
00084     */
00085 
00086     /**Snake private variables*/
00087     Directions _direction;
00088     int _countdown;
00089     bool _gameover;
00090     int _score;
00091     int _reset_apple;
00092 
00093     int _x0;            /**snake position variable*/
00094     int _y0;
00095     int _x1;
00096     int _y1;
00097     int _x2;
00098     int _y2;
00099     int _x3;
00100     int _y3;
00101     int _x4;
00102     int _y4;
00103     int _x5;
00104     int _y5;
00105     int _x6;
00106     int _y6;
00107     int _x7;
00108     int _y7;
00109 
00110 
00111     int _apx;       /**apple position variable*/
00112     int _apy;
00113 
00114 };
00115 
00116 
00117 #endif