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@34:85ccc16f24d2, 2020-05-15 (annotated)

Committer:
evanso
Date:
Fri May 15 12:05:33 2020 +0000
Revision:
34:85ccc16f24d2
Parent:
33:7fedd8029473
Child:
35:577c65bf914e
Added when aliens collide with people, the people are abducted to the top of the screen. Then that alien tracks the spaceship and moves towards it rather than randomly moving.

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 32:c006a9882778 21 position_x_ = position_x_start;
evanso 32:c006a9882778 22 position_y_ = position_y_start;
evanso 28:a5958497d5ce 23 alien_move_counter_ = 0;
evanso 24:479da6ca0e7e 24 srand(pad.read_adc()*64000);
evanso 24:479da6ca0e7e 25 random_move_counter_ = 0;
evanso 24:479da6ca0e7e 26 random_direction_ = 0;
evanso 27:8bb2bd97c319 27 direction_ = rand()%2;
evanso 34:85ccc16f24d2 28 collision_people_element_ = -1;
evanso 34:85ccc16f24d2 29 track_flag_ = false;
evanso 19:1bc0a2d22054 30 }
evanso 24:479da6ca0e7e 31
evanso 27:8bb2bd97c319 32 void Alien::draw_alien(N5110 &lcd,Vector2D spaceship_pos,Direction d_,
evanso 34:85ccc16f24d2 33 int map_length_, int position_x_map_, bool alien_collision) {
evanso 21:f7d7834e3af1 34 //moves alien spaceship movemen
evanso 34:85ccc16f24d2 35 position_x_ += calc_sprite_movement(d_);
evanso 21:f7d7834e3af1 36
evanso 24:479da6ca0e7e 37 //Alien moves on its own but at half speed of spaceship
evanso 28:a5958497d5ce 38 if (alien_move_counter_%2 == 0) {
evanso 34:85ccc16f24d2 39 if(track_flag_){
evanso 34:85ccc16f24d2 40 move_hunt_mode(spaceship_pos);
evanso 34:85ccc16f24d2 41 //printf("tack_flag = %d\n", track_flag_);
evanso 34:85ccc16f24d2 42 //printf("pos_x = %d : pos y = %d\n",position_x_, position_y_);
evanso 34:85ccc16f24d2 43 }else if (random_move_counter_ == 0 || alien_collision){
evanso 34:85ccc16f24d2 44 if(alien_collision){
evanso 34:85ccc16f24d2 45 //move alien to top of screen
evanso 34:85ccc16f24d2 46 random_direction_ = 6;
evanso 34:85ccc16f24d2 47 random_move_counter_ = 42;
evanso 34:85ccc16f24d2 48 alien_collision = false;
evanso 34:85ccc16f24d2 49 }else{
evanso 34:85ccc16f24d2 50 set_random_move();
evanso 34:85ccc16f24d2 51 }
evanso 34:85ccc16f24d2 52
evanso 24:479da6ca0e7e 53 }
evanso 34:85ccc16f24d2 54 if(!track_flag_){
evanso 34:85ccc16f24d2 55 move_direction();
evanso 34:85ccc16f24d2 56 }
evanso 24:479da6ca0e7e 57 off_screen_x_y_checker(map_length_, position_x_map_);
evanso 24:479da6ca0e7e 58 random_move_counter_ --;
evanso 28:a5958497d5ce 59 alien_fire_counter_++;
evanso 24:479da6ca0e7e 60
evanso 34:85ccc16f24d2 61
evanso 21:f7d7834e3af1 62 }
evanso 28:a5958497d5ce 63 alien_move_counter_++;
evanso 28:a5958497d5ce 64
evanso 27:8bb2bd97c319 65 lcd.drawSprite(position_x_, position_y_, 6, 7, (int*)k_alien_sprite);
evanso 20:febd920ec29e 66 }
evanso 20:febd920ec29e 67
evanso 24:479da6ca0e7e 68 void Alien::off_screen_x_y_checker(int map_length_, int position_x_map_){
evanso 28:a5958497d5ce 69 // checks y postion of alien and then alters alien movement direction if at
evanso 28:a5958497d5ce 70 // edge of map
evanso 27:8bb2bd97c319 71 if (position_y_ < 0) {
evanso 24:479da6ca0e7e 72 // sets alien direction to one that increces y value
evanso 27:8bb2bd97c319 73 if(direction_){
evanso 24:479da6ca0e7e 74 random_direction_ = 1;
evanso 24:479da6ca0e7e 75 }else{
evanso 24:479da6ca0e7e 76 random_direction_ = 4;
evanso 24:479da6ca0e7e 77 }
evanso 27:8bb2bd97c319 78 }else if (position_y_ > 40) {
evanso 24:479da6ca0e7e 79 // sets alien direction to one that decreces y value
evanso 27:8bb2bd97c319 80 if(direction_){
evanso 24:479da6ca0e7e 81 random_direction_ = 2;
evanso 24:479da6ca0e7e 82 }else{
evanso 24:479da6ca0e7e 83 random_direction_ = 5;
evanso 24:479da6ca0e7e 84 }
evanso 24:479da6ca0e7e 85 }
evanso 24:479da6ca0e7e 86
evanso 24:479da6ca0e7e 87 // loops the alien round if it reaches the end of the map
evanso 27:8bb2bd97c319 88 if(position_x_ <= (84 - map_length_)){
evanso 27:8bb2bd97c319 89 position_x_ += map_length_;
evanso 27:8bb2bd97c319 90 }else if (position_x_ >= map_length_){
evanso 27:8bb2bd97c319 91 position_x_ -= map_length_ + 10;
evanso 24:479da6ca0e7e 92 }
evanso 24:479da6ca0e7e 93
evanso 24:479da6ca0e7e 94 // Debug and check variables when defined
evanso 24:479da6ca0e7e 95 #ifdef CALCULATE_ALIEN_MOVEMENT_DEBUG
evanso 24:479da6ca0e7e 96 printf("\nposition_x_map_ = %d\n", position_x_map_);
evanso 24:479da6ca0e7e 97 printf("map_length_ = %d\n", map_length_ );
evanso 27:8bb2bd97c319 98 printf("map_length_ + position_x_map_ = %d\n", map_length_ +
evanso 27:8bb2bd97c319 99 position_x_map_);
evanso 24:479da6ca0e7e 100 #endif
evanso 24:479da6ca0e7e 101 }
evanso 24:479da6ca0e7e 102
evanso 24:479da6ca0e7e 103 void Alien::move_hunt_mode(Vector2D spaceship_pos){
evanso 34:85ccc16f24d2 104 if(spaceship_pos.x < position_x_){
evanso 34:85ccc16f24d2 105 position_x_ --;
evanso 34:85ccc16f24d2 106 }else if(spaceship_pos.x > position_x_){
evanso 27:8bb2bd97c319 107 position_x_ ++;
evanso 21:f7d7834e3af1 108 }
evanso 34:85ccc16f24d2 109
evanso 34:85ccc16f24d2 110 if(spaceship_pos.y > position_y_){
evanso 34:85ccc16f24d2 111 position_y_ ++;
evanso 34:85ccc16f24d2 112 }else if(spaceship_pos.y < position_y_){
evanso 34:85ccc16f24d2 113 position_y_ --;
evanso 34:85ccc16f24d2 114 }
evanso 21:f7d7834e3af1 115 }
evanso 21:f7d7834e3af1 116
evanso 20:febd920ec29e 117 bool Alien::check_collision(Weapons bullet) {
evanso 20:febd920ec29e 118 bool collision = false;
evanso 20:febd920ec29e 119 //printf ("Collision 1 = %d\n", collision);
evanso 31:6015e8ed859c 120 Vector2D bullet_pos = bullet.get_pos();
evanso 20:febd920ec29e 121 // checks collision if bullet is going in east direction
evanso 20:febd920ec29e 122 if(bullet.get_direction()){
evanso 31:6015e8ed859c 123 //int bullet_pos_twox = bullet_pos.x;
evanso 31:6015e8ed859c 124 //int bullet_pos_twoy = bullet_pos.y;
evanso 27:8bb2bd97c319 125 //printf ("alien x = %d, bullet x = %d\n", position_x_,bullet_pos_twox);
evanso 27:8bb2bd97c319 126 //printf ("alien y = %d, bullet y = %d\n", position_y_,bullet_pos_twoy);
evanso 24:479da6ca0e7e 127
evanso 31:6015e8ed859c 128 if((bullet_pos.x + 1) >= position_x_ &&
evanso 31:6015e8ed859c 129 (bullet_pos.x + 1) <= (position_x_ + 6) &&
evanso 31:6015e8ed859c 130 position_y_ <= bullet_pos.y &&
evanso 31:6015e8ed859c 131 bullet_pos.y <= (position_y_ + 7)){
evanso 20:febd920ec29e 132 collision = true;
evanso 20:febd920ec29e 133 }
evanso 24:479da6ca0e7e 134 //printf ("Collision 2 = %d\n", collision);
evanso 24:479da6ca0e7e 135
evanso 20:febd920ec29e 136 // checks collision if bullet is going in west direction
evanso 20:febd920ec29e 137 }else if(!bullet.get_direction()){
evanso 31:6015e8ed859c 138
evanso 31:6015e8ed859c 139 if(bullet_pos.x <= (position_x_ + 6) &&
evanso 31:6015e8ed859c 140 bullet_pos.x >= position_x_ &&
evanso 31:6015e8ed859c 141 position_y_ <= bullet_pos.y &&
evanso 31:6015e8ed859c 142 bullet_pos.y <= (position_y_ + 7)){
evanso 20:febd920ec29e 143 collision = true;
evanso 20:febd920ec29e 144 }
evanso 27:8bb2bd97c319 145
evanso 20:febd920ec29e 146 //printf ("Collision 3 = %d\n", collision);
evanso 20:febd920ec29e 147 }
evanso 27:8bb2bd97c319 148
evanso 20:febd920ec29e 149 //printf ("Collision 4 = %d\n", collision);
evanso 20:febd920ec29e 150 return collision;
evanso 21:f7d7834e3af1 151 }
evanso 21:f7d7834e3af1 152
evanso 22:053c11a202e1 153
evanso 28:a5958497d5ce 154 int Alien::get_alien_fire_counter(){
evanso 28:a5958497d5ce 155 return alien_move_counter_;
evanso 28:a5958497d5ce 156 }
evanso 33:7fedd8029473 157
evanso 33:7fedd8029473 158 void Alien::set_alien_x_pos(int position_x){
evanso 33:7fedd8029473 159 position_x_ = position_x;
evanso 33:7fedd8029473 160 }
evanso 34:85ccc16f24d2 161
evanso 34:85ccc16f24d2 162 void Alien::set_collision_people_element(int people_element){
evanso 34:85ccc16f24d2 163 collision_people_element_ = people_element;
evanso 34:85ccc16f24d2 164 }
evanso 34:85ccc16f24d2 165
evanso 34:85ccc16f24d2 166 int Alien::get_collision_people_element(){
evanso 34:85ccc16f24d2 167 return collision_people_element_;
evanso 34:85ccc16f24d2 168 }
evanso 34:85ccc16f24d2 169
evanso 34:85ccc16f24d2 170 void Alien::set_track_flag(bool track_flag){
evanso 34:85ccc16f24d2 171 track_flag_ = track_flag;
evanso 34:85ccc16f24d2 172 }