Ben Evans / Mbed 2 deprecated Defender_Game

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Dependencies:   mbed

GameEngine/GameEngine.cpp@68:bb1650c657ef, 2020-05-21 (annotated)

Committer:
evanso
Date:
Thu May 21 22:46:23 2020 +0000
Revision:
68:bb1650c657ef
Parent:
67:a2984682d641
Child:
69:753ba27325ce
Added sprites file to store letter for the title screen and arrows for menus. Also added a time to stop double-button presses.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
evanso 8:dd1037c5435b 1 #include "GameEngine.h"
evanso 67:a2984682d641 2
evanso 47:49fa1adc10b4 3 /** Define acelleromter object */
evanso 47:49fa1adc10b4 4 FXOS8700CQ accelerometer(I2C_SDA,I2C_SCL);
evanso 8:dd1037c5435b 5
evanso 49:ed569eceeaa4 6 /** Define SD card object */
evanso 49:ed569eceeaa4 7 SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "sd");
evanso 67:a2984682d641 8
evanso 8:dd1037c5435b 9 GameEngine::GameEngine() {
evanso 44:2d957de3bce3 10 //attach ticker to isr
evanso 42:3aed75338272 11 ticker.attach(callback(this, &GameEngine::lcd_frame_time_isr), 0.04 );
evanso 8:dd1037c5435b 12 }
evanso 8:dd1037c5435b 13
evanso 8:dd1037c5435b 14 GameEngine::~GameEngine() {
evanso 8:dd1037c5435b 15
evanso 8:dd1037c5435b 16 }
evanso 8:dd1037c5435b 17
evanso 13:12276eed13ac 18 void GameEngine::init() {
evanso 36:27aa597db3d2 19 // Initalise objects
evanso 8:dd1037c5435b 20 pad.init();
evanso 8:dd1037c5435b 21 lcd.init();
evanso 8:dd1037c5435b 22 spaceship.init();
evanso 13:12276eed13ac 23 map.init(pad);
evanso 40:71f947254fda 24 menu.init();
evanso 47:49fa1adc10b4 25 accelerometer.init();
evanso 67:a2984682d641 26 saved.init();
evanso 58:a9a39424df52 27
evanso 58:a9a39424df52 28 //set first screen to main menu
evanso 58:a9a39424df52 29 current_menu_part_= menu.get_current_menu_part();
evanso 36:27aa597db3d2 30
evanso 36:27aa597db3d2 31 // Set seed value
evanso 36:27aa597db3d2 32 srand(pad.read_adc()*64000);
evanso 67:a2984682d641 33
evanso 67:a2984682d641 34 //Had to inlcude save test here as getting the error sd couldnt be created
evanso 67:a2984682d641 35 #ifdef SD_TEST
evanso 67:a2984682d641 36 saved.run_save_test(sd,lcd);
evanso 67:a2984682d641 37 #endif
evanso 8:dd1037c5435b 38 }
evanso 8:dd1037c5435b 39
evanso 64:e9dfc35a1738 40 void GameEngine::lcd_frame_time_isr(){
evanso 64:e9dfc35a1738 41 // set ISR flag
evanso 64:e9dfc35a1738 42 lcd_frame_time_flag_ = 1;
evanso 64:e9dfc35a1738 43 }
evanso 64:e9dfc35a1738 44
evanso 44:2d957de3bce3 45 // Menu Control-----------------------------------------------------------------
evanso 44:2d957de3bce3 46
evanso 44:2d957de3bce3 47 void GameEngine::game_select_part(){
evanso 44:2d957de3bce3 48 switch (current_menu_part_) {
evanso 44:2d957de3bce3 49 case main_menu: run_menu(); break;
evanso 44:2d957de3bce3 50 case play: run_play(); break;
evanso 44:2d957de3bce3 51 case settings: run_settings(); break;
evanso 44:2d957de3bce3 52 case saved_games: run_saved_games(); break;
evanso 44:2d957de3bce3 53 }
evanso 44:2d957de3bce3 54 }
evanso 44:2d957de3bce3 55
evanso 44:2d957de3bce3 56 void GameEngine::run_menu(){
evanso 44:2d957de3bce3 57 lcd.setContrast(pad.read_pot1());
evanso 44:2d957de3bce3 58 lcd.clear();
evanso 64:e9dfc35a1738 59
evanso 44:2d957de3bce3 60 // Scrolls, draws and selcts menu parts
evanso 44:2d957de3bce3 61 read_joystick_direction();
evanso 65:daa792a09e1f 62 menu.menu_scroll(d_);
evanso 44:2d957de3bce3 63 menu.draw_part(lcd);
evanso 65:daa792a09e1f 64 menu.select_part(pad.A_pressed());
evanso 64:e9dfc35a1738 65
evanso 44:2d957de3bce3 66 current_menu_part_ = menu.get_current_menu_part();
evanso 64:e9dfc35a1738 67
evanso 59:0b2e43312d6b 68 //inititialise the game if play
evanso 59:0b2e43312d6b 69 if (current_menu_part_ == play){
evanso 59:0b2e43312d6b 70 play_init();
evanso 59:0b2e43312d6b 71 }
evanso 64:e9dfc35a1738 72
evanso 64:e9dfc35a1738 73 lcd.refresh();
evanso 44:2d957de3bce3 74 }
evanso 44:2d957de3bce3 75
evanso 64:e9dfc35a1738 76
evanso 64:e9dfc35a1738 77
evanso 64:e9dfc35a1738 78
evanso 64:e9dfc35a1738 79 // Menu Play -------------------------------------------------------------------
evanso 58:a9a39424df52 80
evanso 44:2d957de3bce3 81 void GameEngine::run_play(){
evanso 64:e9dfc35a1738 82 int paused_flag = false;
evanso 44:2d957de3bce3 83 while (1) {
evanso 64:e9dfc35a1738 84 // Timer interupt to set frame rate of game
evanso 45:fc3238cd28c6 85 if (lcd_frame_time_flag_) {
evanso 44:2d957de3bce3 86 // resets ISR flag
evanso 45:fc3238cd28c6 87 lcd_frame_time_flag_ = 0;
evanso 44:2d957de3bce3 88
evanso 64:e9dfc35a1738 89 //Pause button pressed
evanso 68:bb1650c657ef 90 if (pad.start_pressed() && paused_counter_ > 10 ){
evanso 64:e9dfc35a1738 91 paused_flag = !paused_flag;
evanso 68:bb1650c657ef 92 paused_counter_ = 0 ;
evanso 58:a9a39424df52 93 }
evanso 68:bb1650c657ef 94 paused_counter_++;
evanso 64:e9dfc35a1738 95
evanso 64:e9dfc35a1738 96 //Draws pause screen if paused button presed
evanso 64:e9dfc35a1738 97 if (paused_flag){
evanso 68:bb1650c657ef 98 run_paused_game();
evanso 68:bb1650c657ef 99
evanso 64:e9dfc35a1738 100 //Otherwise draw gameplay screen
evanso 56:663d0546c235 101 }else{
evanso 56:663d0546c235 102 gameplay_loop();
evanso 56:663d0546c235 103 }
evanso 44:2d957de3bce3 104
evanso 68:bb1650c657ef 105 // break out of run play loop when lives = 0 or exite flag set
evanso 68:bb1650c657ef 106 if(!spaceship_lives_||exit_flag_){
evanso 59:0b2e43312d6b 107 if(!spaceship_lives_){
evanso 59:0b2e43312d6b 108 draw_game_over_screen();
evanso 68:bb1650c657ef 109 }
evanso 59:0b2e43312d6b 110 reset_map();
evanso 65:daa792a09e1f 111 pad.leds_off();
evanso 59:0b2e43312d6b 112 break;
evanso 56:663d0546c235 113 }
evanso 44:2d957de3bce3 114 }
evanso 44:2d957de3bce3 115
evanso 64:e9dfc35a1738 116 // MCU put to sleep between each frame to save power
evanso 64:e9dfc35a1738 117 sleep();
evanso 57:d4ce42c24561 118 }
evanso 65:daa792a09e1f 119 //stop taking double a press
evanso 68:bb1650c657ef 120 wait(0.3);
evanso 44:2d957de3bce3 121 }
evanso 44:2d957de3bce3 122
evanso 64:e9dfc35a1738 123 void GameEngine::play_init(){
evanso 64:e9dfc35a1738 124 // Define variables
evanso 64:e9dfc35a1738 125 spawn_time_multipler_ = 1;
evanso 64:e9dfc35a1738 126 alien_number_ = 5;
evanso 64:e9dfc35a1738 127 spawn_alien_counter_ = 0;
evanso 64:e9dfc35a1738 128 spaceship_lives_ = 3;
evanso 64:e9dfc35a1738 129 reset_map_counter_ = 0;
evanso 64:e9dfc35a1738 130 smart_bomb_counter_ = 4;
evanso 64:e9dfc35a1738 131 create_people();
evanso 64:e9dfc35a1738 132 points_ = 0;
evanso 64:e9dfc35a1738 133 smart_bomb_timer_ = 0;
evanso 64:e9dfc35a1738 134 bullet_timer_ = 0;
evanso 64:e9dfc35a1738 135 lcd_frame_time_flag_ = 0;
evanso 68:bb1650c657ef 136 paused_counter_ = 25;
evanso 64:e9dfc35a1738 137
evanso 64:e9dfc35a1738 138 //Flags for screen control
evanso 64:e9dfc35a1738 139 exit_flag_ = false;
evanso 64:e9dfc35a1738 140 run_save_a_game_flag_ = false;
evanso 64:e9dfc35a1738 141 spaceship_destroyed_ = false;
evanso 64:e9dfc35a1738 142 }
evanso 64:e9dfc35a1738 143
evanso 13:12276eed13ac 144 void GameEngine::gameplay_loop() {
evanso 30:814674b189f0 145 // clear screen and set contrast
evanso 13:12276eed13ac 146 lcd.setContrast(pad.read_pot1());
evanso 8:dd1037c5435b 147 lcd.clear();
evanso 11:ab578a151f67 148
evanso 64:e9dfc35a1738 149 // creats aliens and people
evanso 41:5959256f4aab 150 spawn_aliens();
evanso 41:5959256f4aab 151 spawn_people();
evanso 41:5959256f4aab 152
evanso 41:5959256f4aab 153 //If spaceship is destroyed stop joystick input, dont draw spaceship sprite
evanso 45:fc3238cd28c6 154 if (!spaceship_destroyed_){
evanso 62:f0c86a854a9e 155 read_joystick_direction();
evanso 65:daa792a09e1f 156 //read_accelerometer_direction(accelerometer.get_roll_angle(),
evanso 65:daa792a09e1f 157 //accelerometer.get_pitch_angle());
evanso 41:5959256f4aab 158 spaceship.movement(d_);
evanso 41:5959256f4aab 159 spaceship.draw(lcd);
evanso 47:49fa1adc10b4 160 create_weapons_bullets();
evanso 47:49fa1adc10b4 161 create_weapons_smart_bomb();
evanso 41:5959256f4aab 162 }
evanso 41:5959256f4aab 163
evanso 41:5959256f4aab 164 // Draws objects
evanso 41:5959256f4aab 165 map.draw_map(lcd, d_);
evanso 41:5959256f4aab 166 draw_aliens();
evanso 41:5959256f4aab 167 draw_bullets();
evanso 41:5959256f4aab 168 draw_explosions();
evanso 41:5959256f4aab 169 draw_people();
evanso 45:fc3238cd28c6 170 hud.draw_HUD(lcd, spaceship_lives_, points_, smart_bomb_counter_);
evanso 41:5959256f4aab 171 spaceship_lives_leds();
evanso 41:5959256f4aab 172
evanso 41:5959256f4aab 173 reset_map_timer();
evanso 30:814674b189f0 174
evanso 18:11068b98e261 175 // refresh's screen
evanso 18:11068b98e261 176 lcd.refresh();
evanso 13:12276eed13ac 177 }
evanso 13:12276eed13ac 178
evanso 64:e9dfc35a1738 179 void GameEngine::draw_game_over_screen(){
evanso 64:e9dfc35a1738 180 //Draws game over screen then back to menu
evanso 64:e9dfc35a1738 181 lcd.clear();
evanso 64:e9dfc35a1738 182 lcd.printString("Game Over",15,3);
evanso 64:e9dfc35a1738 183 lcd.refresh();
evanso 64:e9dfc35a1738 184 wait(3);
evanso 64:e9dfc35a1738 185 current_menu_part_ = main_menu;
evanso 62:f0c86a854a9e 186 }
evanso 62:f0c86a854a9e 187
evanso 62:f0c86a854a9e 188 void GameEngine::run_paused_game(){
evanso 64:e9dfc35a1738 189 //Lunch save a game screen
evanso 64:e9dfc35a1738 190 if (pad.B_pressed()||run_save_a_game_flag_){
evanso 64:e9dfc35a1738 191 run_save_a_game_flag_ = true;
evanso 64:e9dfc35a1738 192 run_save_a_game();
evanso 64:e9dfc35a1738 193
evanso 64:e9dfc35a1738 194 //Draw pause screen
evanso 62:f0c86a854a9e 195 }else{
evanso 62:f0c86a854a9e 196 draw_pause_screen();
evanso 62:f0c86a854a9e 197 paused_flag_ = true;
evanso 62:f0c86a854a9e 198 }
evanso 64:e9dfc35a1738 199
evanso 64:e9dfc35a1738 200 //Exit to main menu
evanso 63:4631447440cf 201 if (pad.A_pressed()||saved.get_error()){
evanso 56:663d0546c235 202 current_menu_part_ = main_menu;
evanso 56:663d0546c235 203 exit_flag_ = true;
evanso 56:663d0546c235 204 }
evanso 56:663d0546c235 205 }
evanso 56:663d0546c235 206
evanso 56:663d0546c235 207 void GameEngine::draw_pause_screen(){
evanso 56:663d0546c235 208 // clear screen and set contrast
evanso 56:663d0546c235 209 lcd.setContrast(pad.read_pot1());
evanso 56:663d0546c235 210 lcd.clear();
evanso 56:663d0546c235 211
evanso 56:663d0546c235 212 //Draw strings
evanso 56:663d0546c235 213 lcd.printString("Paused!",24,0);
evanso 56:663d0546c235 214 lcd.printString("A to Exit",15,2);
evanso 56:663d0546c235 215 lcd.printString("B to Save&Exit",0,4);
evanso 56:663d0546c235 216
evanso 56:663d0546c235 217 // refresh's screen
evanso 56:663d0546c235 218 lcd.refresh();
evanso 56:663d0546c235 219 }
evanso 56:663d0546c235 220
evanso 64:e9dfc35a1738 221 void GameEngine::run_save_a_game(){
evanso 64:e9dfc35a1738 222 //Draw and interact with save ya game screen
evanso 64:e9dfc35a1738 223 read_joystick_direction();
evanso 64:e9dfc35a1738 224 saved.saved_games_scroll(d_);
evanso 64:e9dfc35a1738 225 saved.save_game_screen(lcd);
evanso 64:e9dfc35a1738 226
evanso 64:e9dfc35a1738 227 //Save game to save file that is displayed
evanso 68:bb1650c657ef 228 if (pad.A_pressed()){
evanso 64:e9dfc35a1738 229 //Define struct data
evanso 64:e9dfc35a1738 230 SavedGamesData data;
evanso 64:e9dfc35a1738 231
evanso 64:e9dfc35a1738 232 //Set values in struct data and saves them selected file
evanso 64:e9dfc35a1738 233 data.score = points_;
evanso 64:e9dfc35a1738 234 data.lives = spaceship_lives_;
evanso 64:e9dfc35a1738 235 data.smart_bombs = smart_bomb_counter_;
evanso 64:e9dfc35a1738 236 data.alien_number = alien_number_;
evanso 64:e9dfc35a1738 237 saved.add_saved_data(sd, data, lcd);
evanso 64:e9dfc35a1738 238
evanso 64:e9dfc35a1738 239 //exit to main menu
evanso 64:e9dfc35a1738 240 current_menu_part_ = main_menu;
evanso 64:e9dfc35a1738 241 reset_map();
evanso 64:e9dfc35a1738 242 exit_flag_ = true;
evanso 64:e9dfc35a1738 243 }
evanso 64:e9dfc35a1738 244 }
evanso 64:e9dfc35a1738 245
evanso 64:e9dfc35a1738 246
evanso 64:e9dfc35a1738 247
evanso 64:e9dfc35a1738 248
evanso 64:e9dfc35a1738 249 // Menu Setting ----------------------------------------------------------------
evanso 64:e9dfc35a1738 250
evanso 64:e9dfc35a1738 251 void GameEngine::run_settings(){
evanso 64:e9dfc35a1738 252
evanso 57:d4ce42c24561 253 }
evanso 57:d4ce42c24561 254
evanso 64:e9dfc35a1738 255
evanso 64:e9dfc35a1738 256
evanso 64:e9dfc35a1738 257 // Menu Saved Games ------------------------------------------------------------
evanso 64:e9dfc35a1738 258
evanso 64:e9dfc35a1738 259 void GameEngine::run_saved_games(){
evanso 64:e9dfc35a1738 260 // Draws and interact with save screen
evanso 64:e9dfc35a1738 261 read_joystick_direction();
evanso 64:e9dfc35a1738 262 saved.saved_games_scroll(d_);
evanso 64:e9dfc35a1738 263 saved.display_saved_games(lcd);
evanso 64:e9dfc35a1738 264
evanso 64:e9dfc35a1738 265 //go back to main menu
evanso 64:e9dfc35a1738 266 if (pad.B_pressed()){
evanso 64:e9dfc35a1738 267 wait(0.035);
evanso 64:e9dfc35a1738 268 current_menu_part_ = main_menu;
evanso 64:e9dfc35a1738 269 }
evanso 64:e9dfc35a1738 270
evanso 64:e9dfc35a1738 271 //Load save, if no file press b go back to main menu
evanso 64:e9dfc35a1738 272 if (pad.A_pressed()){
evanso 64:e9dfc35a1738 273 wait(0.035);
evanso 64:e9dfc35a1738 274 saved_games_overide_init();
evanso 64:e9dfc35a1738 275 if(saved.get_error()) {
evanso 64:e9dfc35a1738 276 saved.set_error(false);
evanso 64:e9dfc35a1738 277 current_menu_part_ = main_menu;
evanso 64:e9dfc35a1738 278 }else{
evanso 64:e9dfc35a1738 279 current_menu_part_ = play;
evanso 64:e9dfc35a1738 280 }
evanso 64:e9dfc35a1738 281 }
evanso 64:e9dfc35a1738 282 }
evanso 64:e9dfc35a1738 283
evanso 64:e9dfc35a1738 284 void GameEngine::saved_games_overide_init(){
evanso 64:e9dfc35a1738 285 play_init();
evanso 64:e9dfc35a1738 286
evanso 64:e9dfc35a1738 287 //Creats data object add sett it values to data saved in the file
evanso 64:e9dfc35a1738 288 SavedGamesData displayed_game;
evanso 64:e9dfc35a1738 289 displayed_game = saved.read_saved_data(sd, lcd);
evanso 64:e9dfc35a1738 290
evanso 64:e9dfc35a1738 291 //Set the variables to value in the displayed saved struct
evanso 64:e9dfc35a1738 292 points_ = displayed_game.score;
evanso 64:e9dfc35a1738 293 spaceship_lives_ = displayed_game.lives;
evanso 64:e9dfc35a1738 294 smart_bomb_counter_= displayed_game.smart_bombs;
evanso 64:e9dfc35a1738 295 alien_number_ = displayed_game.alien_number;
evanso 64:e9dfc35a1738 296 }
evanso 64:e9dfc35a1738 297
evanso 64:e9dfc35a1738 298
evanso 64:e9dfc35a1738 299
evanso 42:3aed75338272 300
evanso 39:fc5586b930e3 301 //Spaceship control ------------------------------------------------------------
evanso 39:fc5586b930e3 302
evanso 15:90b6821bcf64 303 void GameEngine::read_joystick_direction(){
evanso 13:12276eed13ac 304 d_ = pad.get_direction();
evanso 18:11068b98e261 305 }
evanso 18:11068b98e261 306
evanso 65:daa792a09e1f 307 void GameEngine::read_accelerometer_direction(float roll,float pitch){
evanso 47:49fa1adc10b4 308 // printf("Pitch = %f Roll = %f\n", pitch, roll);
evanso 47:49fa1adc10b4 309
evanso 47:49fa1adc10b4 310 //north
evanso 47:49fa1adc10b4 311 if(pitch >= -35){
evanso 47:49fa1adc10b4 312 if(roll >= 10){
evanso 47:49fa1adc10b4 313 d_ = NE;
evanso 47:49fa1adc10b4 314 }else if (roll <= -10){
evanso 47:49fa1adc10b4 315 d_ = NW;
evanso 47:49fa1adc10b4 316 }else {
evanso 47:49fa1adc10b4 317 d_ = N;
evanso 47:49fa1adc10b4 318 }
evanso 47:49fa1adc10b4 319 //south
evanso 47:49fa1adc10b4 320 }else if(pitch <= -55){
evanso 47:49fa1adc10b4 321 if (roll >= 10){
evanso 47:49fa1adc10b4 322 d_ = SE;
evanso 47:49fa1adc10b4 323 }else if(roll <= -10){
evanso 47:49fa1adc10b4 324 d_ = SW;
evanso 47:49fa1adc10b4 325 }else {
evanso 47:49fa1adc10b4 326 d_ = S;
evanso 47:49fa1adc10b4 327 }
evanso 47:49fa1adc10b4 328 // East/west
evanso 47:49fa1adc10b4 329 }else {
evanso 47:49fa1adc10b4 330 if (roll >= 10){
evanso 47:49fa1adc10b4 331 d_ = E;
evanso 47:49fa1adc10b4 332 }else if(roll <= -10){
evanso 47:49fa1adc10b4 333 d_ = W;
evanso 47:49fa1adc10b4 334 }else{
evanso 47:49fa1adc10b4 335 d_ = CENTRE;
evanso 47:49fa1adc10b4 336 }
evanso 47:49fa1adc10b4 337 }
evanso 47:49fa1adc10b4 338 }
evanso 47:49fa1adc10b4 339
evanso 39:fc5586b930e3 340 void GameEngine::spaceship_lives_leds(){
evanso 39:fc5586b930e3 341 pad.leds_off();
evanso 39:fc5586b930e3 342
evanso 39:fc5586b930e3 343 //top two red leds on if 1 lives left
evanso 45:fc3238cd28c6 344 if(spaceship_lives_ >= 1){
evanso 39:fc5586b930e3 345 pad.led(1,1);
evanso 39:fc5586b930e3 346 pad.led(4,1);
evanso 39:fc5586b930e3 347 }
evanso 39:fc5586b930e3 348
evanso 39:fc5586b930e3 349 //middle two orange leds also on if 2 lives left
evanso 45:fc3238cd28c6 350 if(spaceship_lives_ >= 2){
evanso 39:fc5586b930e3 351 pad.led(2,1);
evanso 39:fc5586b930e3 352 pad.led(5,1);
evanso 39:fc5586b930e3 353 }
evanso 39:fc5586b930e3 354
evanso 39:fc5586b930e3 355 //bottom two red leds also on if 3 lives left
evanso 45:fc3238cd28c6 356 if(spaceship_lives_ == 3){
evanso 39:fc5586b930e3 357 pad.led(3,1);
evanso 39:fc5586b930e3 358 pad.led(6,1);
evanso 39:fc5586b930e3 359 }
evanso 39:fc5586b930e3 360 }
evanso 39:fc5586b930e3 361
evanso 44:2d957de3bce3 362
evanso 44:2d957de3bce3 363
evanso 36:27aa597db3d2 364 //Weapon control ---------------------------------------------------------------
evanso 36:27aa597db3d2 365
evanso 36:27aa597db3d2 366 void GameEngine::create_weapons_bullets(){
evanso 39:fc5586b930e3 367 // controlls speed that bullet can be fired
evanso 45:fc3238cd28c6 368 if(bullet_timer_ <=0){
evanso 39:fc5586b930e3 369 if (pad.A_pressed()){
evanso 36:27aa597db3d2 370 // Bullet object
evanso 36:27aa597db3d2 371 Weapons new_bullet;
evanso 36:27aa597db3d2 372
evanso 36:27aa597db3d2 373 new_bullet.init(spaceship.get_pos(),
evanso 36:27aa597db3d2 374 spaceship.get_spaceship_sprite_direction(), true);
evanso 36:27aa597db3d2 375
evanso 36:27aa597db3d2 376 // Stores bullet object in vector
evanso 36:27aa597db3d2 377 bullet_vector.push_back(new_bullet);
evanso 39:fc5586b930e3 378 }
evanso 45:fc3238cd28c6 379 bullet_timer_ = 5;
evanso 39:fc5586b930e3 380 }
evanso 45:fc3238cd28c6 381 bullet_timer_--;
evanso 36:27aa597db3d2 382 }
evanso 36:27aa597db3d2 383
evanso 36:27aa597db3d2 384 void GameEngine::create_weapons_smart_bomb(){
evanso 39:fc5586b930e3 385 // timer to stop smart bomb button be accidently pressed twice
evanso 45:fc3238cd28c6 386 if(smart_bomb_timer_ <=0){
evanso 45:fc3238cd28c6 387 if (pad.B_pressed() && smart_bomb_counter_ > 0){
evanso 39:fc5586b930e3 388 weapons.smart_bomb(lcd);
evanso 45:fc3238cd28c6 389 smart_bomb_counter_--;
evanso 39:fc5586b930e3 390
evanso 39:fc5586b930e3 391 //Deletes alien object if on screen
evanso 39:fc5586b930e3 392 for (int i = (alien_vector.size() -1) ; i >= 0 ; i--){
evanso 39:fc5586b930e3 393 Vector2D alien_pos = alien_vector[i].get_pos();
evanso 36:27aa597db3d2 394
evanso 39:fc5586b930e3 395 // Creats explosion if alien was on the screen
evanso 39:fc5586b930e3 396 if(alien_pos.x <= 84 && alien_pos.x >= -6){
evanso 39:fc5586b930e3 397 create_explosion(alien_pos);
evanso 39:fc5586b930e3 398
evanso 39:fc5586b930e3 399 //delete person object if was being abducted by destroyed alien
evanso 39:fc5586b930e3 400 if(alien_vector[i].get_collision_people_element() > -1){
evanso 39:fc5586b930e3 401 people_vector.erase(people_vector.begin() +
evanso 39:fc5586b930e3 402 alien_vector[i].get_collision_people_element());
evanso 39:fc5586b930e3 403 }
evanso 39:fc5586b930e3 404
evanso 39:fc5586b930e3 405 alien_vector.erase(alien_vector.begin()+ i);
evanso 45:fc3238cd28c6 406 points_ ++;
evanso 39:fc5586b930e3 407 }
evanso 36:27aa597db3d2 408 }
evanso 45:fc3238cd28c6 409 smart_bomb_timer_ = 30;
evanso 39:fc5586b930e3 410 }
evanso 39:fc5586b930e3 411 }
evanso 45:fc3238cd28c6 412 smart_bomb_timer_--;
evanso 36:27aa597db3d2 413 }
evanso 36:27aa597db3d2 414
evanso 36:27aa597db3d2 415 void GameEngine::draw_bullets(){
evanso 36:27aa597db3d2 416 // interates over bullet vectors, moves and draws bullet objects
evanso 36:27aa597db3d2 417
evanso 36:27aa597db3d2 418 // Alien bullets
evanso 36:27aa597db3d2 419 for (int i = 0; i < alien_bullet_vector.size(); i++){
evanso 36:27aa597db3d2 420 alien_bullet_vector[i].draw_alien_bullet(lcd, d_);
evanso 36:27aa597db3d2 421
evanso 36:27aa597db3d2 422 // deletes alien bullet object after bullet has moved set distance
evanso 36:27aa597db3d2 423 if(alien_bullet_vector[i].get_bullet_delete_counter() >> 5){
evanso 36:27aa597db3d2 424 alien_bullet_vector.erase(alien_bullet_vector.begin()+ i);
evanso 36:27aa597db3d2 425 }
evanso 36:27aa597db3d2 426
evanso 36:27aa597db3d2 427 // Deletes bullet and shpaceship if collision detected
evanso 36:27aa597db3d2 428 if (spaceship.check_collision(alien_bullet_vector[i]) &&
evanso 45:fc3238cd28c6 429 !spaceship_destroyed_ ){
evanso 36:27aa597db3d2 430 create_explosion(spaceship.get_pos());
evanso 36:27aa597db3d2 431
evanso 45:fc3238cd28c6 432 spaceship_destroyed_ = true;
evanso 36:27aa597db3d2 433 alien_bullet_vector.erase(alien_bullet_vector.begin()+ i);
evanso 36:27aa597db3d2 434 }
evanso 36:27aa597db3d2 435 }
evanso 36:27aa597db3d2 436
evanso 36:27aa597db3d2 437 // Spaceship bullets
evanso 36:27aa597db3d2 438 for (int i = 0; i < bullet_vector.size(); i++){
evanso 36:27aa597db3d2 439 bullet_vector[i].draw_bullet(lcd);
evanso 36:27aa597db3d2 440
evanso 36:27aa597db3d2 441 // deletes bullet object after bullet has moved set distance
evanso 36:27aa597db3d2 442 if(bullet_vector[i].get_bullet_delete_counter() >> 5){
evanso 36:27aa597db3d2 443 bullet_vector.erase(bullet_vector.begin()+ i);
evanso 36:27aa597db3d2 444 }
evanso 36:27aa597db3d2 445 }
evanso 36:27aa597db3d2 446 }
evanso 36:27aa597db3d2 447
evanso 36:27aa597db3d2 448
evanso 36:27aa597db3d2 449
evanso 36:27aa597db3d2 450 //Alien Control ----------------------------------------------------------------
evanso 36:27aa597db3d2 451
evanso 32:c006a9882778 452 void GameEngine::spawn_aliens(){
evanso 51:35cb8e604b72 453 if(alien_vector.size() <= alien_number_){
evanso 34:85ccc16f24d2 454 create_alien();
evanso 32:c006a9882778 455 }
evanso 32:c006a9882778 456
evanso 45:fc3238cd28c6 457 //printf( " alien_number_counter_ = %d\n",alien_number_counter_);
evanso 45:fc3238cd28c6 458
evanso 34:85ccc16f24d2 459 //slowley incresing the alien counter as game goes on to make harder
evanso 45:fc3238cd28c6 460 if(spawn_alien_counter_%(500*spawn_time_multipler_) == 0){
evanso 51:35cb8e604b72 461 alien_number_++;
evanso 45:fc3238cd28c6 462 spawn_time_multipler_++;
evanso 32:c006a9882778 463 }
evanso 34:85ccc16f24d2 464
evanso 45:fc3238cd28c6 465 spawn_alien_counter_++;
evanso 32:c006a9882778 466 }
evanso 32:c006a9882778 467
evanso 36:27aa597db3d2 468 void GameEngine::create_alien(){
evanso 36:27aa597db3d2 469 int position_x_start = 0;
evanso 36:27aa597db3d2 470
evanso 36:27aa597db3d2 471 // Alien object
evanso 36:27aa597db3d2 472 Alien new_alien;
evanso 36:27aa597db3d2 473
evanso 36:27aa597db3d2 474 //spawns aliens between x > 84 and x <0
evanso 36:27aa597db3d2 475 if(rand() % 2){
evanso 36:27aa597db3d2 476 position_x_start = rand() % 84 + 84;
evanso 36:27aa597db3d2 477 }else{
evanso 36:27aa597db3d2 478 position_x_start =rand() % 83 - 84;
evanso 36:27aa597db3d2 479 }
evanso 39:fc5586b930e3 480 new_alien.init(pad, position_x_start, (rand() % 33 + 9));
evanso 36:27aa597db3d2 481
evanso 36:27aa597db3d2 482 // Stores alien object in vector
evanso 36:27aa597db3d2 483 alien_vector.push_back(new_alien);
evanso 36:27aa597db3d2 484 }
evanso 36:27aa597db3d2 485
evanso 36:27aa597db3d2 486 void GameEngine::check_alien_people_collision(int i){
evanso 40:71f947254fda 487 // only a collision if all three of theses conditions are met:
evanso 40:71f947254fda 488 // check all these codition for every alien to every person
evanso 40:71f947254fda 489 // 1)person hasn't already had a collision
evanso 40:71f947254fda 490 // 2)There is an acutaual collision of people and alien
evanso 36:27aa597db3d2 491 for (int x = 0; x < people_vector.size(); x++){
evanso 36:27aa597db3d2 492 if (!people_vector[x].get_alien_collision_flag() &&
evanso 36:27aa597db3d2 493 people_vector[x].check_alien_collision(alien_vector[i])){
evanso 36:27aa597db3d2 494 alien_vector[i].set_collision_people_element(x);
evanso 36:27aa597db3d2 495 }
evanso 36:27aa597db3d2 496 }
evanso 36:27aa597db3d2 497
evanso 36:27aa597db3d2 498 //draws collision if detected
evanso 36:27aa597db3d2 499 if(alien_vector[i].get_collision_people_element() > -1){
evanso 36:27aa597db3d2 500 alien_vector[i].draw_alien(lcd,spaceship.get_pos(),d_,
evanso 36:27aa597db3d2 501 map.get_length_map(), map.get_position_x_map(),true);
evanso 36:27aa597db3d2 502 }else{
evanso 36:27aa597db3d2 503 alien_vector[i].draw_alien(lcd,spaceship.get_pos(),d_,
evanso 36:27aa597db3d2 504 map.get_length_map(), map.get_position_x_map(),false);
evanso 36:27aa597db3d2 505 }
evanso 36:27aa597db3d2 506 }
evanso 36:27aa597db3d2 507
evanso 36:27aa597db3d2 508 void GameEngine::alliens_fire_bullets(int i){
evanso 36:27aa597db3d2 509 if (alien_vector[i].get_alien_fire_counter()%60 == 0){
evanso 36:27aa597db3d2 510 Weapons alien_bullet;
evanso 36:27aa597db3d2 511
evanso 36:27aa597db3d2 512 // fires bullet towards direction of spaceship
evanso 36:27aa597db3d2 513 bool alien_bullet_direction = false;
evanso 36:27aa597db3d2 514 Vector2D spaceship_pos = spaceship.get_pos();
evanso 36:27aa597db3d2 515 Vector2D alien_pos = alien_vector[i].get_pos();
evanso 36:27aa597db3d2 516 if(spaceship_pos.x > alien_pos.x){
evanso 36:27aa597db3d2 517 alien_bullet_direction = true;
evanso 36:27aa597db3d2 518 }
evanso 36:27aa597db3d2 519
evanso 36:27aa597db3d2 520 alien_bullet.init(alien_vector[i].get_pos(),
evanso 36:27aa597db3d2 521 alien_bullet_direction , false);
evanso 36:27aa597db3d2 522
evanso 36:27aa597db3d2 523 // Stores bullet object in vector
evanso 36:27aa597db3d2 524 alien_bullet_vector.push_back(alien_bullet);
evanso 36:27aa597db3d2 525 }
evanso 36:27aa597db3d2 526 }
evanso 36:27aa597db3d2 527
evanso 36:27aa597db3d2 528 void GameEngine::delete_aliens(int i){
evanso 36:27aa597db3d2 529 for (int x = 0; x < bullet_vector.size(); x++){
evanso 36:27aa597db3d2 530 if (alien_vector[i].check_collision(bullet_vector[x])){
evanso 36:27aa597db3d2 531 create_explosion(alien_vector[i].get_pos());
evanso 36:27aa597db3d2 532
evanso 36:27aa597db3d2 533 //delete person object if was carried by destroyed alien
evanso 36:27aa597db3d2 534 if(alien_vector[i].get_collision_people_element() > -1){
evanso 36:27aa597db3d2 535 people_vector.erase(people_vector.begin() +
evanso 36:27aa597db3d2 536 alien_vector[i].get_collision_people_element());
evanso 36:27aa597db3d2 537 }
evanso 36:27aa597db3d2 538
evanso 39:fc5586b930e3 539 bullet_vector.erase(bullet_vector.begin()+ x);
evanso 39:fc5586b930e3 540 alien_vector.erase(alien_vector.begin()+ i);
evanso 45:fc3238cd28c6 541 points_ ++;
evanso 36:27aa597db3d2 542 }
evanso 36:27aa597db3d2 543 }
evanso 36:27aa597db3d2 544 }
evanso 36:27aa597db3d2 545
evanso 36:27aa597db3d2 546 void GameEngine::draw_aliens(){
evanso 36:27aa597db3d2 547 // interates over alien vector and draws each new_alien object
evanso 36:27aa597db3d2 548 for (int i = 0; i < alien_vector.size(); i++){
evanso 36:27aa597db3d2 549
evanso 36:27aa597db3d2 550 check_alien_people_collision(i);
evanso 36:27aa597db3d2 551
evanso 36:27aa597db3d2 552 // deleted spaceship if alien ship touches spaceship
evanso 36:27aa597db3d2 553 if (spaceship.check_alien_collision(alien_vector[i]) &&
evanso 45:fc3238cd28c6 554 !spaceship_destroyed_){
evanso 36:27aa597db3d2 555 create_explosion(spaceship.get_pos());
evanso 45:fc3238cd28c6 556 spaceship_destroyed_ = true;
evanso 36:27aa597db3d2 557 }
evanso 36:27aa597db3d2 558
evanso 36:27aa597db3d2 559 alliens_fire_bullets(i);
evanso 36:27aa597db3d2 560
evanso 36:27aa597db3d2 561 delete_aliens(i);
evanso 34:85ccc16f24d2 562 }
evanso 34:85ccc16f24d2 563 }
evanso 34:85ccc16f24d2 564
evanso 36:27aa597db3d2 565
evanso 36:27aa597db3d2 566
evanso 36:27aa597db3d2 567 //Explotion Control ------------------------------------------------------------
evanso 36:27aa597db3d2 568
evanso 36:27aa597db3d2 569 void GameEngine::create_explosion(Vector2D destroyed_position){
evanso 36:27aa597db3d2 570 // explosion object
evanso 36:27aa597db3d2 571 Explosion new_explosion;
evanso 36:27aa597db3d2 572
evanso 36:27aa597db3d2 573 new_explosion.init(destroyed_position);
evanso 33:7fedd8029473 574
evanso 36:27aa597db3d2 575 // Stores explosion object in vector
evanso 36:27aa597db3d2 576 explosion_vector.push_back(new_explosion);
evanso 36:27aa597db3d2 577 }
evanso 36:27aa597db3d2 578
evanso 36:27aa597db3d2 579 void GameEngine::draw_explosions(){
evanso 36:27aa597db3d2 580 // interates over expoltion vector and draws each explosion object then
evanso 36:27aa597db3d2 581 // deleted object after set size
evanso 36:27aa597db3d2 582 for (int i = 0; i < explosion_vector.size(); i++){
evanso 36:27aa597db3d2 583 explosion_vector[i].draw_explosion(lcd);
evanso 31:6015e8ed859c 584
evanso 36:27aa597db3d2 585 // delete explosion after reaches set size
evanso 36:27aa597db3d2 586 if(explosion_vector[i].get_explosion_radius() == 8){
evanso 36:27aa597db3d2 587 explosion_vector.erase(explosion_vector.begin()+ i);
evanso 31:6015e8ed859c 588 }
evanso 36:27aa597db3d2 589 }
evanso 36:27aa597db3d2 590 }
evanso 36:27aa597db3d2 591
evanso 36:27aa597db3d2 592
evanso 36:27aa597db3d2 593
evanso 36:27aa597db3d2 594 //People Control ---------------------------------------------------------------
evanso 36:27aa597db3d2 595
evanso 36:27aa597db3d2 596 void GameEngine::spawn_people(){
evanso 36:27aa597db3d2 597 // Keeps number of people objects constant as people objecs are erased
evanso 36:27aa597db3d2 598 if(people_vector.size() <= 5){
evanso 36:27aa597db3d2 599 create_people();
evanso 31:6015e8ed859c 600 }
evanso 20:febd920ec29e 601 }
evanso 20:febd920ec29e 602
evanso 33:7fedd8029473 603 void GameEngine::create_people(){
evanso 33:7fedd8029473 604 // People object
evanso 33:7fedd8029473 605 People people;
evanso 33:7fedd8029473 606
evanso 33:7fedd8029473 607 people.init(pad, (rand() % 168 - 84));
evanso 33:7fedd8029473 608
evanso 33:7fedd8029473 609 // Stores alien object in vector
evanso 33:7fedd8029473 610 people_vector.push_back(people);
evanso 33:7fedd8029473 611 }
evanso 33:7fedd8029473 612
evanso 33:7fedd8029473 613 void GameEngine::draw_people(){
evanso 33:7fedd8029473 614 for (int i = 0; i < people_vector.size(); i++){
evanso 34:85ccc16f24d2 615 people_vector[i].draw_people(lcd, d_,
evanso 34:85ccc16f24d2 616 map.get_length_map(), map.get_position_x_map());
evanso 34:85ccc16f24d2 617
evanso 34:85ccc16f24d2 618 //errase person if at top of screen as captured by alien and alien is
evanso 34:85ccc16f24d2 619 //set to track mode
evanso 34:85ccc16f24d2 620 Vector2D people_pos = people_vector[i].get_pos();
evanso 40:71f947254fda 621
evanso 40:71f947254fda 622 for (int x = 0; x < alien_vector.size(); x++){
evanso 40:71f947254fda 623 Vector2D alien_pos = alien_vector[x].get_pos();
evanso 40:71f947254fda 624 if(people_pos.y < 30 && alien_pos.y < 9){
evanso 40:71f947254fda 625
evanso 40:71f947254fda 626 //set alien who abducted person to track mode
evanso 34:85ccc16f24d2 627 if(alien_vector[x].get_collision_people_element() == i){
evanso 34:85ccc16f24d2 628 alien_vector[x].set_track_flag(true);
evanso 40:71f947254fda 629 people_vector.erase(people_vector.begin()+ i);
evanso 34:85ccc16f24d2 630 }
evanso 40:71f947254fda 631
evanso 40:71f947254fda 632 }
evanso 34:85ccc16f24d2 633
evanso 34:85ccc16f24d2 634 }
evanso 33:7fedd8029473 635 }
evanso 33:7fedd8029473 636 }
evanso 33:7fedd8029473 637
evanso 19:1bc0a2d22054 638
evanso 25:70b55f5bfc87 639
evanso 36:27aa597db3d2 640 //Map Control-------------------------------------------------------------------
evanso 19:1bc0a2d22054 641
evanso 36:27aa597db3d2 642 void GameEngine::reset_map_timer(){
evanso 45:fc3238cd28c6 643 if(spaceship_destroyed_){
evanso 45:fc3238cd28c6 644 reset_map_counter_++;
evanso 36:27aa597db3d2 645
evanso 36:27aa597db3d2 646 // stops map movement
evanso 36:27aa597db3d2 647 d_ = CENTRE;
evanso 36:27aa597db3d2 648
evanso 36:27aa597db3d2 649 // reset map after set time
evanso 45:fc3238cd28c6 650 if(reset_map_counter_ == 50){
evanso 36:27aa597db3d2 651 reset_map();
evanso 25:70b55f5bfc87 652 }
evanso 36:27aa597db3d2 653 }
evanso 25:70b55f5bfc87 654 }
evanso 36:27aa597db3d2 655
evanso 30:814674b189f0 656 void GameEngine::reset_map(){
evanso 36:27aa597db3d2 657 // Reassign values to variables
evanso 30:814674b189f0 658 spaceship.init();
evanso 45:fc3238cd28c6 659 spaceship_lives_--;
evanso 45:fc3238cd28c6 660 spaceship_destroyed_ = false;
evanso 45:fc3238cd28c6 661 reset_map_counter_ = 0;
evanso 33:7fedd8029473 662
evanso 34:85ccc16f24d2 663 // erase aliens so redrawn in random positions when respawning spaceship
evanso 34:85ccc16f24d2 664 for (int i = (alien_vector.size() - 1); i >= 0 ; i--){
evanso 34:85ccc16f24d2 665 alien_vector.erase(alien_vector.begin()+ i);
evanso 34:85ccc16f24d2 666 }
evanso 36:27aa597db3d2 667
evanso 34:85ccc16f24d2 668 // erase all people so redrawn at bottom of map
evanso 34:85ccc16f24d2 669 for (int i = (people_vector.size() - 1); i >= 0 ; i--){
evanso 34:85ccc16f24d2 670 people_vector.erase(people_vector.begin()+ i);
evanso 34:85ccc16f24d2 671 }
evanso 36:27aa597db3d2 672
evanso 36:27aa597db3d2 673 // erase all alien bullets
evanso 34:85ccc16f24d2 674 for (int i = (alien_bullet_vector.size() - 1); i >= 0 ; i--){
evanso 34:85ccc16f24d2 675 alien_bullet_vector.erase(alien_bullet_vector.begin()+ i);
evanso 33:7fedd8029473 676 }
evanso 20:febd920ec29e 677 }