Ben Evans / Mbed 2 deprecated Defender_Game

Ben Evans University Second Year Project. Game Called Defender.

Dependencies:   mbed

https://os.mbed.com/media/uploads/evanso/84bc1a30759fd6a1e3f1fd1fae3e97c2.png

Hello, soldier, you have been specially selected as the defender of planet earth.

Your mission, if you choose to accept it. Fly around the planet and pulverise invading alien ships for as long as you can. Stop the aliens abducting the innocent people on the ground. Be warned if an alien ship manages to abduct a person and take them to top of the screen, they will no longer move randomly and will begin to hunt you down. This sounds like a challenge you were trained for.

But don’t worry soldier you’re not going into battle empty-handed. Your ship is equipped with a state of the art laser beam that has unlimited ammo and four smart bombs that will destroy anything on the screen. The ship also has three lives so use them wisely.

As time goes on more alien ships will arrive on planet earth increasing the difficulty of your mission. And remember the landscape bellow loops around so if you continually fly in the same direction you go to your original position. Good luck soldier.

Alien/Alien.cpp@36:27aa597db3d2, 2020-05-15 (annotated)

Committer:
evanso
Date:
Fri May 15 16:31:25 2020 +0000
Revision:
36:27aa597db3d2
Parent:
35:577c65bf914e
Child:
39:fc5586b930e3
Created Parent Classes folder to hold all of the parent class files. Shortened function lengths in Game Engine class and organised function definitions.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
evanso 19:1bc0a2d22054 1 #include "Alien.h"
evanso 19:1bc0a2d22054 2
evanso 20:febd920ec29e 3 const int k_alien_sprite[6][7] = {
evanso 20:febd920ec29e 4 { 0,0,1,1,1,1,0,},
evanso 20:febd920ec29e 5 { 0,1,0,1,1,0,1,},
evanso 20:febd920ec29e 6 { 0,1,0,1,1,0,1,},
evanso 20:febd920ec29e 7 { 0,0,1,1,1,1,0,},
evanso 20:febd920ec29e 8 { 0,1,0,1,0,1,0,},
evanso 20:febd920ec29e 9 { 1,0,0,1,0,0,1,},
evanso 19:1bc0a2d22054 10 };
evanso 19:1bc0a2d22054 11
evanso 19:1bc0a2d22054 12 Alien::Alien() {
evanso 21:f7d7834e3af1 13
evanso 19:1bc0a2d22054 14 }
evanso 19:1bc0a2d22054 15
evanso 19:1bc0a2d22054 16 Alien::~Alien() {
evanso 19:1bc0a2d22054 17
evanso 19:1bc0a2d22054 18 }
evanso 19:1bc0a2d22054 19
evanso 32:c006a9882778 20 void Alien::init(Gamepad &pad, int position_x_start, int position_y_start) {
evanso 36:27aa597db3d2 21 // Assign values to variables
evanso 35:577c65bf914e 22 sprite_x_length = 7;
evanso 35:577c65bf914e 23 sprite_y_length = 6;
evanso 32:c006a9882778 24 position_x_ = position_x_start;
evanso 32:c006a9882778 25 position_y_ = position_y_start;
evanso 28:a5958497d5ce 26 alien_move_counter_ = 0;
evanso 24:479da6ca0e7e 27 srand(pad.read_adc()*64000);
evanso 24:479da6ca0e7e 28 random_move_counter_ = 0;
evanso 24:479da6ca0e7e 29 random_direction_ = 0;
evanso 27:8bb2bd97c319 30 direction_ = rand()%2;
evanso 34:85ccc16f24d2 31 collision_people_element_ = -1;
evanso 34:85ccc16f24d2 32 track_flag_ = false;
evanso 19:1bc0a2d22054 33 }
evanso 24:479da6ca0e7e 34
evanso 27:8bb2bd97c319 35 void Alien::draw_alien(N5110 &lcd,Vector2D spaceship_pos,Direction d_,
evanso 34:85ccc16f24d2 36 int map_length_, int position_x_map_, bool alien_collision) {
evanso 36:27aa597db3d2 37 //moves alien with map movement
evanso 34:85ccc16f24d2 38 position_x_ += calc_sprite_movement(d_);
evanso 21:f7d7834e3af1 39
evanso 36:27aa597db3d2 40 // Moves alien at half speed of spaceship
evanso 28:a5958497d5ce 41 if (alien_move_counter_%2 == 0) {
evanso 36:27aa597db3d2 42
evanso 36:27aa597db3d2 43 // Alien tracks spaceship if abducted poeple
evanso 34:85ccc16f24d2 44 if(track_flag_){
evanso 34:85ccc16f24d2 45 move_hunt_mode(spaceship_pos);
evanso 34:85ccc16f24d2 46 //printf("tack_flag = %d\n", track_flag_);
evanso 34:85ccc16f24d2 47 //printf("pos_x = %d : pos y = %d\n",position_x_, position_y_);
evanso 36:27aa597db3d2 48
evanso 36:27aa597db3d2 49 // If no abduction alien moves randomly
evanso 34:85ccc16f24d2 50 }else if (random_move_counter_ == 0 || alien_collision){
evanso 36:27aa597db3d2 51
evanso 36:27aa597db3d2 52 //move alien to top of screen if a collision with person
evanso 34:85ccc16f24d2 53 if(alien_collision){
evanso 34:85ccc16f24d2 54 random_direction_ = 6;
evanso 34:85ccc16f24d2 55 random_move_counter_ = 42;
evanso 34:85ccc16f24d2 56 alien_collision = false;
evanso 34:85ccc16f24d2 57 }else{
evanso 34:85ccc16f24d2 58 set_random_move();
evanso 34:85ccc16f24d2 59 }
evanso 34:85ccc16f24d2 60
evanso 24:479da6ca0e7e 61 }
evanso 36:27aa597db3d2 62
evanso 36:27aa597db3d2 63 //Move alien not tracking spackship move randomley
evanso 34:85ccc16f24d2 64 if(!track_flag_){
evanso 34:85ccc16f24d2 65 move_direction();
evanso 34:85ccc16f24d2 66 }
evanso 36:27aa597db3d2 67
evanso 36:27aa597db3d2 68 //stop alien going of map
evanso 24:479da6ca0e7e 69 off_screen_x_y_checker(map_length_, position_x_map_);
evanso 36:27aa597db3d2 70
evanso 24:479da6ca0e7e 71 random_move_counter_ --;
evanso 36:27aa597db3d2 72 alien_fire_counter_++;
evanso 21:f7d7834e3af1 73 }
evanso 36:27aa597db3d2 74
evanso 28:a5958497d5ce 75 alien_move_counter_++;
evanso 27:8bb2bd97c319 76 lcd.drawSprite(position_x_, position_y_, 6, 7, (int*)k_alien_sprite);
evanso 20:febd920ec29e 77 }
evanso 20:febd920ec29e 78
evanso 24:479da6ca0e7e 79 void Alien::off_screen_x_y_checker(int map_length_, int position_x_map_){
evanso 28:a5958497d5ce 80 // checks y postion of alien and then alters alien movement direction if at
evanso 28:a5958497d5ce 81 // edge of map
evanso 27:8bb2bd97c319 82 if (position_y_ < 0) {
evanso 24:479da6ca0e7e 83 // sets alien direction to one that increces y value
evanso 27:8bb2bd97c319 84 if(direction_){
evanso 24:479da6ca0e7e 85 random_direction_ = 1;
evanso 24:479da6ca0e7e 86 }else{
evanso 24:479da6ca0e7e 87 random_direction_ = 4;
evanso 24:479da6ca0e7e 88 }
evanso 36:27aa597db3d2 89
evanso 27:8bb2bd97c319 90 }else if (position_y_ > 40) {
evanso 24:479da6ca0e7e 91 // sets alien direction to one that decreces y value
evanso 27:8bb2bd97c319 92 if(direction_){
evanso 24:479da6ca0e7e 93 random_direction_ = 2;
evanso 24:479da6ca0e7e 94 }else{
evanso 24:479da6ca0e7e 95 random_direction_ = 5;
evanso 24:479da6ca0e7e 96 }
evanso 24:479da6ca0e7e 97 }
evanso 24:479da6ca0e7e 98
evanso 24:479da6ca0e7e 99 // loops the alien round if it reaches the end of the map
evanso 27:8bb2bd97c319 100 if(position_x_ <= (84 - map_length_)){
evanso 27:8bb2bd97c319 101 position_x_ += map_length_;
evanso 27:8bb2bd97c319 102 }else if (position_x_ >= map_length_){
evanso 27:8bb2bd97c319 103 position_x_ -= map_length_ + 10;
evanso 24:479da6ca0e7e 104 }
evanso 24:479da6ca0e7e 105
evanso 24:479da6ca0e7e 106 // Debug and check variables when defined
evanso 24:479da6ca0e7e 107 #ifdef CALCULATE_ALIEN_MOVEMENT_DEBUG
evanso 24:479da6ca0e7e 108 printf("\nposition_x_map_ = %d\n", position_x_map_);
evanso 24:479da6ca0e7e 109 printf("map_length_ = %d\n", map_length_ );
evanso 27:8bb2bd97c319 110 printf("map_length_ + position_x_map_ = %d\n", map_length_ +
evanso 27:8bb2bd97c319 111 position_x_map_);
evanso 24:479da6ca0e7e 112 #endif
evanso 24:479da6ca0e7e 113 }
evanso 24:479da6ca0e7e 114
evanso 24:479da6ca0e7e 115 void Alien::move_hunt_mode(Vector2D spaceship_pos){
evanso 34:85ccc16f24d2 116 if(spaceship_pos.x < position_x_){
evanso 34:85ccc16f24d2 117 position_x_ --;
evanso 34:85ccc16f24d2 118 }else if(spaceship_pos.x > position_x_){
evanso 27:8bb2bd97c319 119 position_x_ ++;
evanso 21:f7d7834e3af1 120 }
evanso 34:85ccc16f24d2 121
evanso 34:85ccc16f24d2 122 if(spaceship_pos.y > position_y_){
evanso 34:85ccc16f24d2 123 position_y_ ++;
evanso 34:85ccc16f24d2 124 }else if(spaceship_pos.y < position_y_){
evanso 34:85ccc16f24d2 125 position_y_ --;
evanso 34:85ccc16f24d2 126 }
evanso 21:f7d7834e3af1 127 }
evanso 21:f7d7834e3af1 128
evanso 28:a5958497d5ce 129 int Alien::get_alien_fire_counter(){
evanso 28:a5958497d5ce 130 return alien_move_counter_;
evanso 28:a5958497d5ce 131 }
evanso 33:7fedd8029473 132
evanso 33:7fedd8029473 133 void Alien::set_alien_x_pos(int position_x){
evanso 33:7fedd8029473 134 position_x_ = position_x;
evanso 33:7fedd8029473 135 }
evanso 34:85ccc16f24d2 136
evanso 34:85ccc16f24d2 137 void Alien::set_collision_people_element(int people_element){
evanso 34:85ccc16f24d2 138 collision_people_element_ = people_element;
evanso 34:85ccc16f24d2 139 }
evanso 34:85ccc16f24d2 140
evanso 34:85ccc16f24d2 141 int Alien::get_collision_people_element(){
evanso 34:85ccc16f24d2 142 return collision_people_element_;
evanso 34:85ccc16f24d2 143 }
evanso 34:85ccc16f24d2 144
evanso 34:85ccc16f24d2 145 void Alien::set_track_flag(bool track_flag){
evanso 34:85ccc16f24d2 146 track_flag_ = track_flag;
evanso 34:85ccc16f24d2 147 }