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Dependencies:   mbed

GameEngine/GameEngine.cpp@33:7fedd8029473, 2020-05-14 (annotated)

Committer:
evanso
Date:
Thu May 14 22:41:16 2020 +0000
Revision:
33:7fedd8029473
Parent:
32:c006a9882778
Child:
34:85ccc16f24d2
Began work on people class. People now randomly print on screen.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
evanso 8:dd1037c5435b 1 #include "GameEngine.h"
evanso 8:dd1037c5435b 2
evanso 8:dd1037c5435b 3 GameEngine::GameEngine() {
evanso 8:dd1037c5435b 4
evanso 8:dd1037c5435b 5 }
evanso 8:dd1037c5435b 6
evanso 8:dd1037c5435b 7 GameEngine::~GameEngine() {
evanso 8:dd1037c5435b 8
evanso 8:dd1037c5435b 9 }
evanso 8:dd1037c5435b 10
evanso 13:12276eed13ac 11 void GameEngine::init() {
evanso 32:c006a9882778 12 srand(pad.read_adc()*64000);
evanso 8:dd1037c5435b 13 pad.init();
evanso 8:dd1037c5435b 14 lcd.init();
evanso 8:dd1037c5435b 15 spaceship.init();
evanso 13:12276eed13ac 16 map.init(pad);
evanso 32:c006a9882778 17
evanso 32:c006a9882778 18 //spawn 5 aliens at start of game
evanso 32:c006a9882778 19 for(int i = 0; i < 6; i++){
evanso 32:c006a9882778 20 create_alien();
evanso 32:c006a9882778 21 }
evanso 33:7fedd8029473 22 spawn_alien_rate = 250;
evanso 33:7fedd8029473 23 spawn_alien_counter = 0;
evanso 30:814674b189f0 24 spaceship_lives = 3;
evanso 30:814674b189f0 25 spaceship_destroyed = false;
evanso 30:814674b189f0 26 reset_map_counter = 0;
evanso 31:6015e8ed859c 27 smart_bomb_counter = 5;
evanso 33:7fedd8029473 28 create_people();
evanso 8:dd1037c5435b 29 }
evanso 8:dd1037c5435b 30
evanso 13:12276eed13ac 31 void GameEngine::gameplay_loop() {
evanso 30:814674b189f0 32 // clear screen and set contrast
evanso 13:12276eed13ac 33 lcd.setContrast(pad.read_pot1());
evanso 8:dd1037c5435b 34 lcd.clear();
evanso 11:ab578a151f67 35
evanso 33:7fedd8029473 36 // creat objects
evanso 31:6015e8ed859c 37 create_weapons();
evanso 32:c006a9882778 38 spawn_aliens();
evanso 19:1bc0a2d22054 39
evanso 33:7fedd8029473 40 //If spaceship is destroyed can't move
evanso 30:814674b189f0 41 if (!spaceship_destroyed){
evanso 33:7fedd8029473 42 read_joystick_direction();
evanso 33:7fedd8029473 43 spaceship.movement(d_);
evanso 30:814674b189f0 44 spaceship.draw(lcd);
evanso 30:814674b189f0 45 }
evanso 33:7fedd8029473 46
evanso 33:7fedd8029473 47 // Draws objects
evanso 18:11068b98e261 48 map.draw_map(lcd, d_);
evanso 20:febd920ec29e 49 draw_aliens();
evanso 19:1bc0a2d22054 50 draw_bullets();
evanso 33:7fedd8029473 51 draw_explosions();
evanso 33:7fedd8029473 52 draw_people();
evanso 30:814674b189f0 53
evanso 30:814674b189f0 54 // Resets map after set frames so spaceship explosion animation showes
evanso 30:814674b189f0 55 if(spaceship_destroyed){
evanso 30:814674b189f0 56 reset_map_counter++;
evanso 33:7fedd8029473 57 d_ = CENTRE;
evanso 30:814674b189f0 58 if(reset_map_counter == 50){
evanso 30:814674b189f0 59 reset_map();
evanso 30:814674b189f0 60 }
evanso 30:814674b189f0 61 }
evanso 30:814674b189f0 62
evanso 18:11068b98e261 63 // refresh's screen
evanso 18:11068b98e261 64 lcd.refresh();
evanso 13:12276eed13ac 65 }
evanso 13:12276eed13ac 66
evanso 15:90b6821bcf64 67 void GameEngine::read_joystick_direction(){
evanso 13:12276eed13ac 68 d_ = pad.get_direction();
evanso 18:11068b98e261 69 }
evanso 18:11068b98e261 70
evanso 32:c006a9882778 71 void GameEngine::spawn_aliens(){
evanso 33:7fedd8029473 72 int rounded_spawn_counter = floor(spawn_alien_rate);
evanso 33:7fedd8029473 73 if(spawn_alien_counter%250== 0){
evanso 32:c006a9882778 74 create_alien();
evanso 32:c006a9882778 75 }
evanso 32:c006a9882778 76
evanso 32:c006a9882778 77 if(spawn_alien_counter > 125){
evanso 33:7fedd8029473 78 spawn_alien_rate --;
evanso 32:c006a9882778 79 }
evanso 33:7fedd8029473 80 spawn_alien_counter++;
evanso 32:c006a9882778 81 }
evanso 32:c006a9882778 82
evanso 31:6015e8ed859c 83 void GameEngine::create_weapons(){
evanso 31:6015e8ed859c 84 //Spaceship bullets
evanso 19:1bc0a2d22054 85 if (pad.A_pressed()){
evanso 19:1bc0a2d22054 86 // Bullet object
evanso 19:1bc0a2d22054 87 Weapons new_bullet;
evanso 19:1bc0a2d22054 88
evanso 27:8bb2bd97c319 89 new_bullet.init(spaceship.get_pos(),
evanso 28:a5958497d5ce 90 spaceship.get_spaceship_sprite_direction(), true);
evanso 19:1bc0a2d22054 91
evanso 20:febd920ec29e 92 // Stores bullet object in vector
evanso 19:1bc0a2d22054 93 bullet_vector.push_back(new_bullet);
evanso 20:febd920ec29e 94 }
evanso 33:7fedd8029473 95
evanso 31:6015e8ed859c 96 // Smart bomb
evanso 31:6015e8ed859c 97 if (pad.B_pressed() && smart_bomb_counter > 0){
evanso 31:6015e8ed859c 98 weapons.smart_bomb(lcd);
evanso 31:6015e8ed859c 99 smart_bomb_counter--;
evanso 31:6015e8ed859c 100
evanso 31:6015e8ed859c 101 //Deletes alien object if on screen
evanso 33:7fedd8029473 102 for (int i = (alien_vector.size() -1) ; i >= 0 ; i--){
evanso 31:6015e8ed859c 103 Vector2D alien_pos = alien_vector[i].get_pos();
evanso 31:6015e8ed859c 104
evanso 31:6015e8ed859c 105 if(alien_pos.x <= 84 && alien_pos.x >= -6){
evanso 31:6015e8ed859c 106 create_explosion(alien_pos);
evanso 31:6015e8ed859c 107 alien_vector.erase(alien_vector.begin()+ i);
evanso 31:6015e8ed859c 108 }
evanso 31:6015e8ed859c 109 }
evanso 31:6015e8ed859c 110
evanso 31:6015e8ed859c 111 }
evanso 20:febd920ec29e 112 }
evanso 20:febd920ec29e 113
evanso 33:7fedd8029473 114 void GameEngine::create_people(){
evanso 33:7fedd8029473 115 // People object
evanso 33:7fedd8029473 116 People people;
evanso 33:7fedd8029473 117
evanso 33:7fedd8029473 118 people.init(pad, (rand() % 168 - 84));
evanso 33:7fedd8029473 119
evanso 33:7fedd8029473 120 // Stores alien object in vector
evanso 33:7fedd8029473 121 people_vector.push_back(people);
evanso 33:7fedd8029473 122 }
evanso 33:7fedd8029473 123
evanso 33:7fedd8029473 124 void GameEngine::draw_people(){
evanso 33:7fedd8029473 125 for (int i = 0; i < people_vector.size(); i++){
evanso 33:7fedd8029473 126 people_vector[i].draw_people(lcd, d_);
evanso 33:7fedd8029473 127 }
evanso 33:7fedd8029473 128 }
evanso 33:7fedd8029473 129
evanso 20:febd920ec29e 130 void GameEngine::create_alien(){
evanso 32:c006a9882778 131 int position_x_start = 0;
evanso 32:c006a9882778 132
evanso 20:febd920ec29e 133 // Alien object
evanso 20:febd920ec29e 134 Alien new_alien;
evanso 32:c006a9882778 135
evanso 32:c006a9882778 136 //Creats randon number for x pos for x > 84 and x <0
evanso 32:c006a9882778 137 if(rand() % 2){
evanso 33:7fedd8029473 138 position_x_start = rand() % 84 + 84;
evanso 32:c006a9882778 139 }else{
evanso 33:7fedd8029473 140 position_x_start =rand() % 83 - 84;
evanso 32:c006a9882778 141 }
evanso 32:c006a9882778 142
evanso 32:c006a9882778 143 new_alien.init(pad, position_x_start, (rand() % 45));
evanso 20:febd920ec29e 144
evanso 20:febd920ec29e 145 // Stores alien object in vector
evanso 20:febd920ec29e 146 alien_vector.push_back(new_alien);
evanso 19:1bc0a2d22054 147 }
evanso 19:1bc0a2d22054 148
evanso 29:e96d91f1d39c 149 void GameEngine::create_explosion(Vector2D destroyed_position){
evanso 25:70b55f5bfc87 150 // explosion object
evanso 25:70b55f5bfc87 151 Explosion new_explosion;
evanso 25:70b55f5bfc87 152
evanso 29:e96d91f1d39c 153 new_explosion.init(destroyed_position);
evanso 25:70b55f5bfc87 154
evanso 25:70b55f5bfc87 155 // Stores explosion object in vector
evanso 25:70b55f5bfc87 156 explosion_vector.push_back(new_explosion);
evanso 25:70b55f5bfc87 157 }
evanso 25:70b55f5bfc87 158
evanso 19:1bc0a2d22054 159 void GameEngine::draw_bullets(){
evanso 29:e96d91f1d39c 160 // interates over bullet vectors, moves and draws bullet object
evanso 29:e96d91f1d39c 161
evanso 29:e96d91f1d39c 162 // Alien bullets
evanso 28:a5958497d5ce 163 for (int i = 0; i < alien_bullet_vector.size(); i++){
evanso 28:a5958497d5ce 164 alien_bullet_vector[i].draw_alien_bullet(lcd, d_);
evanso 28:a5958497d5ce 165
evanso 29:e96d91f1d39c 166 // deletes alien bullet object after bullet has moved set distance
evanso 33:7fedd8029473 167 if(alien_bullet_vector[i].get_bullet_delete_counter() >> 5){
evanso 28:a5958497d5ce 168 alien_bullet_vector.erase(alien_bullet_vector.begin()+ i);
evanso 28:a5958497d5ce 169 }
evanso 29:e96d91f1d39c 170
evanso 30:814674b189f0 171 // Deletes bullet and shpaceship if collision detected
evanso 30:814674b189f0 172 if (spaceship.check_collision(alien_bullet_vector[i]) &&
evanso 30:814674b189f0 173 !spaceship_destroyed ){
evanso 29:e96d91f1d39c 174 create_explosion(spaceship.get_pos());
evanso 30:814674b189f0 175
evanso 30:814674b189f0 176 spaceship_destroyed = true;
evanso 30:814674b189f0 177 alien_bullet_vector.erase(alien_bullet_vector.begin()+ i);
evanso 29:e96d91f1d39c 178 }
evanso 28:a5958497d5ce 179 }
evanso 29:e96d91f1d39c 180
evanso 29:e96d91f1d39c 181 // Spaceship bullets
evanso 19:1bc0a2d22054 182 for (int i = 0; i < bullet_vector.size(); i++){
evanso 19:1bc0a2d22054 183 bullet_vector[i].draw_bullet(lcd);
evanso 28:a5958497d5ce 184
evanso 28:a5958497d5ce 185 // deletes bullet object after bullet has moved set distance
evanso 28:a5958497d5ce 186 if(bullet_vector[i].get_bullet_delete_counter() >> 5){
evanso 20:febd920ec29e 187 bullet_vector.erase(bullet_vector.begin()+ i);
evanso 20:febd920ec29e 188 }
evanso 19:1bc0a2d22054 189 }
evanso 19:1bc0a2d22054 190 }
evanso 19:1bc0a2d22054 191
evanso 20:febd920ec29e 192 void GameEngine::draw_aliens(){
evanso 29:e96d91f1d39c 193 // interates over alien vector and draws each new_alien object
evanso 20:febd920ec29e 194 for (int i = 0; i < alien_vector.size(); i++){
evanso 27:8bb2bd97c319 195 alien_vector[i].draw_alien(lcd,spaceship.get_pos(),d_,
evanso 27:8bb2bd97c319 196 map.get_length_map(), map.get_position_x_map());
evanso 20:febd920ec29e 197
evanso 30:814674b189f0 198 // deleted spaceship if alien ship touches spaceship
evanso 30:814674b189f0 199 if (spaceship.check_alien_collision(alien_vector[i]) &&
evanso 30:814674b189f0 200 !spaceship_destroyed){
evanso 30:814674b189f0 201 create_explosion(spaceship.get_pos());
evanso 30:814674b189f0 202 spaceship_destroyed = true;
evanso 30:814674b189f0 203 }
evanso 30:814674b189f0 204
evanso 29:e96d91f1d39c 205 // alien sprites fire bullet randomley
evanso 28:a5958497d5ce 206 if (alien_vector[i].get_alien_fire_counter()%60 == 0){
evanso 28:a5958497d5ce 207 Weapons alien_bullet;
evanso 28:a5958497d5ce 208
evanso 28:a5958497d5ce 209 // fires bullet towards direction of spaceship
evanso 28:a5958497d5ce 210 bool alien_bullet_direction = false;
evanso 28:a5958497d5ce 211 Vector2D spaceship_pos = spaceship.get_pos();
evanso 28:a5958497d5ce 212 Vector2D alien_pos = alien_vector[i].get_pos();
evanso 28:a5958497d5ce 213 if(spaceship_pos.x > alien_pos.x){
evanso 28:a5958497d5ce 214 alien_bullet_direction = true;
evanso 28:a5958497d5ce 215 }
evanso 28:a5958497d5ce 216
evanso 28:a5958497d5ce 217 alien_bullet.init(alien_vector[i].get_pos(),
evanso 28:a5958497d5ce 218 alien_bullet_direction , false);
evanso 28:a5958497d5ce 219
evanso 28:a5958497d5ce 220 // Stores bullet object in vector
evanso 28:a5958497d5ce 221 alien_bullet_vector.push_back(alien_bullet);
evanso 28:a5958497d5ce 222 }
evanso 28:a5958497d5ce 223
evanso 29:e96d91f1d39c 224 // Deletes bullet and alien if collision detected and draws explosion
evanso 29:e96d91f1d39c 225 for (int x = 0; x < bullet_vector.size(); x++){
evanso 29:e96d91f1d39c 226 if (alien_vector[i].check_collision(bullet_vector[x])){
evanso 29:e96d91f1d39c 227 create_explosion(alien_vector[i].get_pos());
evanso 25:70b55f5bfc87 228
evanso 29:e96d91f1d39c 229 bullet_vector.erase(bullet_vector.begin()+ i);
evanso 29:e96d91f1d39c 230 alien_vector.erase(alien_vector.begin()+ i);
evanso 29:e96d91f1d39c 231 }
evanso 25:70b55f5bfc87 232 }
evanso 25:70b55f5bfc87 233 }
evanso 25:70b55f5bfc87 234 }
evanso 25:70b55f5bfc87 235
evanso 25:70b55f5bfc87 236 void GameEngine::draw_explosions(){
evanso 27:8bb2bd97c319 237 // interates over expoltion vector and draws each explosion object then
evanso 27:8bb2bd97c319 238 // deleted object after set size
evanso 25:70b55f5bfc87 239 for (int i = 0; i < explosion_vector.size(); i++){
evanso 25:70b55f5bfc87 240 explosion_vector[i].draw_explosion(lcd);
evanso 25:70b55f5bfc87 241
evanso 25:70b55f5bfc87 242 // delete explosion after reaches set size
evanso 25:70b55f5bfc87 243 if(explosion_vector[i].get_explosion_radius() == 8){
evanso 25:70b55f5bfc87 244 explosion_vector.erase(explosion_vector.begin()+ i);
evanso 20:febd920ec29e 245 }
evanso 20:febd920ec29e 246 }
evanso 30:814674b189f0 247 }
evanso 30:814674b189f0 248
evanso 30:814674b189f0 249 void GameEngine::reset_map(){
evanso 30:814674b189f0 250 spaceship.init();
evanso 30:814674b189f0 251 spaceship_lives--;
evanso 30:814674b189f0 252 spaceship_destroyed = false;
evanso 30:814674b189f0 253 reset_map_counter = 0;
evanso 33:7fedd8029473 254
evanso 33:7fedd8029473 255 //moves alien of screen to random positions when respawning spaceship
evanso 33:7fedd8029473 256 for (int i = 0; i < alien_vector.size(); i++){
evanso 33:7fedd8029473 257 int position_x_start = 0;
evanso 33:7fedd8029473 258
evanso 33:7fedd8029473 259 //Creats randon number for x pos for x > 84 and x <0
evanso 33:7fedd8029473 260 if(rand() % 2){
evanso 33:7fedd8029473 261 position_x_start = rand() % 84 + 84;
evanso 33:7fedd8029473 262 }else{
evanso 33:7fedd8029473 263 position_x_start =rand() % 83 - 84;
evanso 33:7fedd8029473 264 }
evanso 33:7fedd8029473 265
evanso 33:7fedd8029473 266 alien_vector[i].set_alien_x_pos(position_x_start);
evanso 33:7fedd8029473 267 }
evanso 20:febd920ec29e 268 }