hydralib.h

00001 #ifndef HYDRALIB_H
00002 #define HYDRALIB_H
00003 
00004 #include "mbed.h"
00005 #include "N5110.h"
00006 #include "Gamepad.h"
00007 
00008 #define widthA 82
00009 #define heightA 36
00010 #define sizeA 3
00011 
00012 
00013 /** Head position */
00014     struct position {
00015         int x;/**< x pos */
00016         int y;/**< y pos */
00017     } ;
00018     /** Food position */
00019     struct foodposition {
00020         int x;/**< x pos */
00021         int y;/**< y pos */
00022     };
00023 
00024 /** Velocity vector */
00025     struct velocity {
00026         int x;      /**< x vector */
00027         int y;/**< y vector */
00028     } ;
00029 
00030 /** Tail position */
00031     struct tail {
00032         int X;/**< x pos */
00033         int Y;/**< y pos */
00034     } ;
00035 
00036 
00037 
00038 
00039 /** hydralib Class
00040  * @brief Library for the first game, Hydra
00041 * @brief Revision 1.3
00042 * @author Mateo Randulfe
00043 * @date May 2017
00044  */
00045 
00046 class hydralib
00047 {
00048 public:
00049 /** Constructor */
00050     hydralib();
00051 /** 
00052 * Function that initialises the values for the main positions
00053 */
00054     void init();
00055 /**
00056 * Function that checks if the snake touched the extremes of the screen
00057 * or if it ate itself
00058 * @return if it touches or not
00059 */
00060     bool border();
00061 /**
00062 * Function that checks if the snake head position is the same as any of his tail parts position
00063 * ie if it ate itself
00064 * @return if it touches or not
00065 */
00066     bool touch();
00067 /**
00068 * Allow player to move and changes velocity of movement depending on the players input
00069 * @param a/b/x/y down,right,left and up
00070 * @param pad down,right,left and up
00071 */
00072     void commands(Gamepad &pad,DigitalOut &a,DigitalOut &b,DigitalOut &x,DigitalOut &y);
00073 /** 
00074 * Updates the movement of the snake tail and head id the snake moves
00075 */
00076     void updatescr();
00077 /**
00078 * Main draw function that draws all the component of the game
00079 * @param lcd for drawing into the screen
00080 */
00081     void draw(N5110 &lcd);
00082 /**
00083 * Function that displays the game over screen and allows player to restart game
00084 *once restarted,all values set to original ones
00085 * @param lcd for drawing into the screen
00086 * @param start for restarting the game
00087 * @param pad for putting leds off
00088 */
00089     void gameover(N5110 &lcd,DigitalOut &start,Gamepad &pad);
00090 /**
00091 * Function that switches only the same number of leds on as the same number of lifes
00092 * the player still have left
00093 * @param pad controls leds
00094 */
00095     void leds(Gamepad &pad);
00096     /**
00097     * Function that sets the velocity of the game and the difficulty level
00098     * the highest the score the faster the game will go and the more difficult
00099     */
00100     void velocities();
00101     /**
00102     * Function that draws a difficulty levels indicator in the bottom on the screen
00103     * next to the score
00104     */
00105     void rectangles(N5110 &lcd);
00106     /** Function that checks if the position of the head and the food is relatively the same
00107     * both of them are 3x3 rectangles. If any 2x2 parts of them are in contact it returns true
00108     * if it would be all 3x3 it would be too difficult
00109     * if it would be any 1x1 it would be too easy
00110     * @return true if eated
00111     */
00112     bool eat();
00113 /**
00114 * Pauses the game
00115 * @param l/r/lcd pauses the game and adds a p of pause in the screen
00116 */    
00117 void pausegame(DigitalOut &l,DigitalOut &r,N5110 &lcd,DigitalOut &back);
00118     /**
00119     * Function that helps lately in the main file to generate food and increase score and lenght
00120     */
00121     void auxiliar();
00122 /** stores score
00123 * @returns score
00124 */
00125 int score();
00126 
00127 
00128 //snake lenght,score,lifes and a buffer for printing score
00129     int _lenght , _score, _lifes;
00130     bool _pause;
00131     char _buffer[20];
00132     position _pos;
00133     foodposition  _food;
00134     velocity _vel;
00135     tail _body[100];
00136     
00137 };
00138 #endif