main.h

00001 /**
00002 @file main.h
00003 @brief Header file for Snake, containing functions prototypes and global variables.
00004 @brief Revision 1.0.
00005 @author Fiifi Mills
00006 @date   May 2015
00007 */
00008 
00009 #include "mbed.h"
00010 #include "N5110.h"
00011 #include "PinDetect.h"
00012 #include "PowerControl/PowerControl.h"
00013 #include "PowerControl/EthernetPowerControl.h"
00014 #include <vector>
00015 #include <stdlib.h>     /* srand, rand */
00016 #include <time.h>
00017 
00018 /**
00019 Enumerated type used for directions read from joystick
00020 */
00021 
00022 enum DirectionName {
00023     UP,
00024     DOWN,
00025     LEFT,
00026     RIGHT,
00027     CENTRE,
00028     UNKNOWN
00029 };
00030 
00031 DirectionName currentDirection ; /*!< DirectionName variable used to refer to the joystick's current direction */
00032 DirectionName previousDirection ; /*!< DirectionName variable used to refer to the snake's previous direction */
00033 
00034 /**
00035 Enumerated type used to display different game menu screens
00036 */
00037 
00038 enum GameMenu {
00039     STARTUP,
00040     SELECTSPEED,
00041     GAMEPLAY
00042 };
00043 
00044 GameMenu currentGameMenu ; /*!< GameMenu variable used to refer to the current game menu being displayed */
00045 
00046 /**
00047 Struct used for creating coordinates
00048 */
00049 
00050 struct coordinate {
00051     int x; 
00052     int y; 
00053 };
00054 
00055 
00056 /** 
00057 Various flags used in the game for notification of specific events
00058 */
00059 
00060 int printFlag; /*!< print flag set in ISR */
00061 int Aflag ;  /*!< Aflag set in ISR when button A pressed */
00062 int Bflag ;  /*!< Bflag set in ISR when button B pressed */
00063 int collisionFlag ; /*!< collisionflag set in moveSnake() when snake collides with self */
00064 int borderFlag ; /*!< borderflag set when snake collides with border in insane mode */
00065 
00066 /** 
00067 Global variables
00068 */
00069 
00070 int score; /*!< The score that the user has accumulated throughout the game */
00071 int xCentre ; /*!< The x coordinate of the centre of the selection circle used in the SELECTSPEED game menu */
00072 int yCentre ; /*!< The y coordinate of the centre of the selection circle used in the SELECTSPEED game menu */
00073 bool gameOver ; /*!< Boolean variable signifying whether or not the game is over */
00074 float speed ; /*!< The wait time used in the moveSnake function */
00075 
00076 
00077 /**
00078 Implements the actual game's functionality by moving the snake and checking when certain rules have been broken
00079 */
00080 void moveSnake();
00081 
00082 /**
00083 Moves the selection circle in the SELECTSPEED game menu either up or down depending on the direction in which the joystick is moved
00084 */
00085 void speedSelect();
00086 
00087 /**
00088 Vector that contains coordinate structs, represents the snake in game
00089 */
00090 std::vector<coordinate> Snake;
00091