Alien.h

00001 #ifndef ALIEN_H
00002 #define ALIEN_H
00003  
00004 // Included Headers ------------------------------------------------------------
00005 #include "mbed.h"
00006 #include "N5110.h"
00007 #include "RandomMovement.h"
00008 #include "CheckCollision.h"
00009 
00010 /** Alien class
00011  * @brief Draws and moves aliens 
00012  * @author Benjamin Evans, University of Leeds
00013  * @date May 2020
00014  */ 
00015 class Alien: public RandomMovement, public CheckCollision {
00016     public:
00017         /** Constructor */
00018         Alien();
00019         
00020         /** Destructor */
00021         ~Alien();
00022         
00023         /** Initialises Alien 
00024          * @param position_x_start @details Random x start pos of alien
00025          * @param position_y_start @details Random y start pos of alien
00026          * @param pad @details Gamepad object
00027          */
00028         void init(Gamepad &pad, int position_x_start, int position_y_start);
00029     
00030         /** Draws the alien
00031          * @param lcd @details N5110 object
00032          * @param spaceship_pos @details xy spaceship position
00033          * @param d_ @details Direction of joystick
00034          * @param map_length_ @details length of map
00035          * @param position_x_map_ @details x position of map
00036          * @param alien_collision @details bool if a collision happened
00037          */
00038         void draw_alien(N5110 &lcd, Vector2D spaceship_pos, Direction d_, 
00039         int map_length_, int position_x_map_, bool alien_collision);
00040     
00041     // Accessors and mutators --------------------------------------------------
00042     
00043         /** Gets the counter for alien time to fire
00044          * @return alien_fire_counter_ 
00045          */
00046         int get_alien_fire_counter(); 
00047         
00048         /** Sets the position_x_ of alien
00049          * @param position_x 
00050          */
00051         void set_alien_x_pos(int position_x);
00052         
00053         /** Sets the collision_people_element number
00054          * @param people_element
00055          */
00056         void set_collision_people_element(int people_element);
00057         
00058          /** Gets the collision_people_element number
00059          * @return collision_people_element
00060          */
00061         int get_collision_people_element(); 
00062         
00063         /** Sets alien track_flag
00064          * @param track_flag_
00065          */
00066         void set_track_flag(bool track_flag);
00067         
00068         /** Gets alien track_flag
00069          * @return track_flag_
00070          */
00071         bool get_track_flag();
00072         
00073     private:
00074     // Function prototypes -----------------------------------------------------
00075        
00076         /** Moves the alien towards the spaceship and around the map 
00077          * @param spaceship_pos @details : Position of the spaceship
00078          */
00079         void move_hunt_mode(Vector2D spaceship_pos);
00080         
00081         /** Stops the alien from moving off the edge of the map and moves alien 
00082          * if the map loops
00083          * @param map_length_@details : length of the map  
00084          * @param position_x_map_ @detials : the drawing start posisiton of the 
00085          * map 
00086          */
00087         void off_screen_x_y_checker(int map_length_, int position_x_map_);
00088         
00089     // Variables ---------------------------------------------------------------
00090          
00091         /** Alien movement counter */
00092         int alien_move_counter_; 
00093         
00094         /** Alien fire bullet counter */
00095         int alien_fire_counter_; 
00096         
00097         /** People element that alien as collided with */
00098         int collision_people_element_;  
00099         
00100         /** Alien abducted people and now track spaceship flag */
00101         bool track_flag_;  
00102         
00103 };
00104  
00105 #endif