ELEC2645 (2019/20) / Mbed 2 deprecated ELEC2645_PROJECT_EL18KK

Dependencies:   mbed

Game/Game.cpp@21:d5b1160f349f, 2020-05-25 (annotated)

Committer:
KaifK
Date:
Mon May 25 00:55:38 2020 +0000
Revision:
21:d5b1160f349f
Parent:
20:c697902b844f
Child:
22:76bb0f52be8b
SFX added, high score is now saved on SD card, testing compiled.; Code needs to be cleaned up a bit and organised.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
KaifK 4:08a0ff6668df 1 #include "Game.h"
KaifK 21:d5b1160f349f 2 SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "sd");
KaifK 20:c697902b844f 3 Ticker ticker;
KaifK 20:c697902b844f 4
KaifK 21:d5b1160f349f 5 FILE *fp;
KaifK 20:c697902b844f 6 volatile int sound_timer_flag = 0;
KaifK 20:c697902b844f 7 volatile int sound_sample = 0;
KaifK 21:d5b1160f349f 8 volatile int level_flag = 1; //initially set
KaifK 20:c697902b844f 9
KaifK 20:c697902b844f 10 void timer_isr();
KaifK 8:5ede90f99a27 11
KaifK 9:e6566d09f087 12 Game::Game(N5110 &lcd, Gamepad &pad, Ball &ball) {
KaifK 9:e6566d09f087 13 _lcd = &lcd;
KaifK 9:e6566d09f087 14 _pad = &pad;
KaifK 9:e6566d09f087 15 _ball = &ball;
KaifK 9:e6566d09f087 16 }
KaifK 4:08a0ff6668df 17 Game::~Game() {}
KaifK 4:08a0ff6668df 18
KaifK 4:08a0ff6668df 19 void Game::init() {
KaifK 4:08a0ff6668df 20 _is_goal = false;
KaifK 21:d5b1160f349f 21 set_highscore(0);
KaifK 8:5ede90f99a27 22 _lives = 3;
KaifK 16:1f196a0e12be 23 _new_lives_threshold = 0;
KaifK 12:ca7329a41fc5 24 _level = 1;
KaifK 8:5ede90f99a27 25 _score = 0;
KaifK 9:e6566d09f087 26 _speed = 0.30f;
KaifK 16:1f196a0e12be 27 _new_speed_threshold = 0.00f;
KaifK 9:e6566d09f087 28 _x_val = 42.00f;
KaifK 9:e6566d09f087 29 _y_val = 0.00f;
KaifK 7:2a3b566aedd3 30 _shot_x = 0;
KaifK 7:2a3b566aedd3 31 _shot_y = 0;
KaifK 4:08a0ff6668df 32 }
KaifK 9:e6566d09f087 33 void Game::play() {
KaifK 16:1f196a0e12be 34 // if all live are lost game ends
KaifK 17:2fbe40177b9c 35 while(_lives > 0) {
KaifK 17:2fbe40177b9c 36 updateSpeed();
KaifK 17:2fbe40177b9c 37 updateLives();
KaifK 17:2fbe40177b9c 38 updateLevel();
KaifK 17:2fbe40177b9c 39 readInput();
KaifK 16:1f196a0e12be 40 if(_is_goal) {
KaifK 12:ca7329a41fc5 41 _score++;
KaifK 12:ca7329a41fc5 42 }
KaifK 15:5bf3f951d337 43 else {
KaifK 15:5bf3f951d337 44 // ball should not go through obstacle hence y value limited to 21
KaifK 15:5bf3f951d337 45 // this is done after calculations to ensure accurate results
KaifK 17:2fbe40177b9c 46 if(_shot_y >= 9) { _shot_y = 21; }
KaifK 20:c697902b844f 47 if(_shot_y <= 5) {_shot_y = 3; }
KaifK 15:5bf3f951d337 48 _lives--;
KaifK 15:5bf3f951d337 49 }
KaifK 16:1f196a0e12be 50 _ball->playShot(_shot_x, _shot_y);
KaifK 16:1f196a0e12be 51 print_goal_message((int)_is_goal);
KaifK 20:c697902b844f 52 playGoalSound((int)_is_goal + 1);
KaifK 12:ca7329a41fc5 53 }
KaifK 20:c697902b844f 54 if(_score > _highscore) { set_highscore(_score);}
KaifK 16:1f196a0e12be 55 _pad->leds(0.0); //turn of all leds
KaifK 8:5ede90f99a27 56 }
KaifK 7:2a3b566aedd3 57
KaifK 9:e6566d09f087 58 void Game::readInput() {
KaifK 17:2fbe40177b9c 59 _pad->reset_buttons(); //forced debounce/reset
KaifK 9:e6566d09f087 60 _x_val = 42; //reset x_val
KaifK 9:e6566d09f087 61 _y_val = 0; //reset y_val
KaifK 9:e6566d09f087 62 while(!_pad->A_pressed()) {
KaifK 9:e6566d09f087 63 pointer_input();
KaifK 7:2a3b566aedd3 64 }
KaifK 17:2fbe40177b9c 65 _pad->reset_buttons(); //forced debounce/reset
KaifK 9:e6566d09f087 66 while(!_pad->B_pressed()) {
KaifK 9:e6566d09f087 67 power_meter_input();
KaifK 6:09a555c0d997 68 }
KaifK 8:5ede90f99a27 69 convert_to_shot_x();
KaifK 7:2a3b566aedd3 70 convert_to_shot_y();
KaifK 17:2fbe40177b9c 71 _is_goal = _ball->isGoal(_level, _shot_x, _shot_y);
KaifK 20:c697902b844f 72 //printf("x val = %.2f \n",_x_val);
KaifK 20:c697902b844f 73 //printf("shot_x val = %d \n",_shot_x);
KaifK 20:c697902b844f 74 //printf("y val = %.2f \n",_y_val);
KaifK 20:c697902b844f 75 //printf("shot_y val = %d \n",_shot_y);
KaifK 6:09a555c0d997 76 }
KaifK 9:e6566d09f087 77 void Game::updateLives() {
KaifK 17:2fbe40177b9c 78 int val [6] = {0,0,0,0,0,0};
KaifK 16:1f196a0e12be 79 // +1 life if score hits a multiple of 5 provided less than 3 lives left
KaifK 16:1f196a0e12be 80 //update threshold so lives don't increase if score stays same
KaifK 16:1f196a0e12be 81 if(_score % 5 == 0 && _score != _new_lives_threshold && _lives != 3) {
KaifK 16:1f196a0e12be 82 _lives++;
KaifK 16:1f196a0e12be 83 _new_lives_threshold = _score;
KaifK 16:1f196a0e12be 84 }
KaifK 20:c697902b844f 85 //printf("Lives = %d \n", _lives);
KaifK 5:ed71996c0534 86 switch(_lives){
KaifK 14:652fd55aebcf 87 case 0:
KaifK 14:652fd55aebcf 88 break;
KaifK 17:2fbe40177b9c 89 case 1: //red leds only
KaifK 17:2fbe40177b9c 90 val[0] = val[3] = 1;
KaifK 5:ed71996c0534 91 break;
KaifK 17:2fbe40177b9c 92 case 2: //red and yellow leds
KaifK 17:2fbe40177b9c 93 val[0] = val[1] = val[3] = val[4] = 1;
KaifK 5:ed71996c0534 94 break;
KaifK 17:2fbe40177b9c 95 case 3: //all leds on
KaifK 17:2fbe40177b9c 96 for (int i = 0; i < 6; i++) {val[i] = 1;}
KaifK 5:ed71996c0534 97 break;
KaifK 5:ed71996c0534 98 default:
KaifK 7:2a3b566aedd3 99 error("Invalid Number of Lives");
KaifK 5:ed71996c0534 100 break;
KaifK 5:ed71996c0534 101 }
KaifK 17:2fbe40177b9c 102 updateLeds(val);
KaifK 5:ed71996c0534 103 }
KaifK 9:e6566d09f087 104 void Game::updateScore() {
KaifK 5:ed71996c0534 105 char buffer[12];
KaifK 5:ed71996c0534 106 sprintf(buffer,"%d",_score);
KaifK 9:e6566d09f087 107 _lcd->printString(buffer,2,5);
KaifK 9:e6566d09f087 108 }
KaifK 9:e6566d09f087 109 void Game::updateSpeed() {
KaifK 17:2fbe40177b9c 110 if(abs(_speed) <= 3) { // max speed = 3
KaifK 16:1f196a0e12be 111 if(_score % 3 == 0 && _score != _new_speed_threshold) {
KaifK 16:1f196a0e12be 112 _speed = abs(_speed) + 0.20f;
KaifK 16:1f196a0e12be 113 //update threshold so speed does not increase if score stays same
KaifK 16:1f196a0e12be 114 _new_speed_threshold = _score;
KaifK 9:e6566d09f087 115 }
KaifK 9:e6566d09f087 116 }
KaifK 20:c697902b844f 117 //printf("speed = %.2f \n", _speed);
KaifK 20:c697902b844f 118 //printf("score = %d \n", _score);
KaifK 5:ed71996c0534 119 }
KaifK 17:2fbe40177b9c 120 void Game::updateLevel() {
KaifK 17:2fbe40177b9c 121 _level = random_level_gen(10); //generate random level
KaifK 21:d5b1160f349f 122 if( level_flag == 1) { //first level is always level 1
KaifK 21:d5b1160f349f 123 level_flag = 0; //flag always stays 0 after first time
KaifK 21:d5b1160f349f 124 _level = 1;
KaifK 21:d5b1160f349f 125 }
KaifK 17:2fbe40177b9c 126 _ball->set_level(_level); //set level
KaifK 20:c697902b844f 127 //printf("Level (in game) = %d \n", _level);
KaifK 17:2fbe40177b9c 128 }
KaifK 17:2fbe40177b9c 129 void Game::updateLeds( int val[6]) {
KaifK 17:2fbe40177b9c 130 _pad->led(1,val[0]);
KaifK 17:2fbe40177b9c 131 _pad->led(2,val[1]);
KaifK 17:2fbe40177b9c 132 _pad->led(3,val[2]);
KaifK 17:2fbe40177b9c 133 _pad->led(4,val[3]);
KaifK 17:2fbe40177b9c 134 _pad->led(5,val[4]);
KaifK 17:2fbe40177b9c 135 _pad->led(6,val[5]);
KaifK 17:2fbe40177b9c 136 }
KaifK 20:c697902b844f 137 void Game::playGoalSound(int sound) {
KaifK 20:c697902b844f 138 sound_sample = 0;
KaifK 20:c697902b844f 139 float val = 0.0f;
KaifK 20:c697902b844f 140 int NUM_ELEMENTS = 0;
KaifK 20:c697902b844f 141 ticker.attach(&timer_isr,226e-7);
KaifK 20:c697902b844f 142 if(sound == 1) {NUM_ELEMENTS = NUM_ELEMENTS_1;}
KaifK 20:c697902b844f 143 else if(sound == 2) {NUM_ELEMENTS = NUM_ELEMENTS_3;}
KaifK 20:c697902b844f 144 else if(sound == 3) {NUM_ELEMENTS = NUM_ELEMENTS_2;}
KaifK 20:c697902b844f 145 while(sound_sample <= NUM_ELEMENTS) {
KaifK 20:c697902b844f 146 if (sound_timer_flag == 1) {
KaifK 20:c697902b844f 147 sound_timer_flag = 0;
KaifK 20:c697902b844f 148 // convert from 0 to 255 to 0.0 to 1.0
KaifK 20:c697902b844f 149 if(sound == 1) {val = float(miss[sound_sample])/ 256.0f;}
KaifK 20:c697902b844f 150 else if(sound == 2) {val = float(goall[sound_sample])/ 256.0f;}
KaifK 20:c697902b844f 151 else if(sound == 3) {val = float(over[sound_sample])/ 256.0f;}
KaifK 20:c697902b844f 152 // write to DAC
KaifK 20:c697902b844f 153 _pad->write_dac(val);
KaifK 20:c697902b844f 154 // move onto next sample
KaifK 20:c697902b844f 155 sound_sample++;
KaifK 20:c697902b844f 156 }
KaifK 20:c697902b844f 157 }
KaifK 20:c697902b844f 158 }
KaifK 16:1f196a0e12be 159 void Game::set_highscore (int score) {
KaifK 21:d5b1160f349f 160 _highscore = score;
KaifK 21:d5b1160f349f 161 fp = fopen("/sd/highscore.txt", "w");
KaifK 21:d5b1160f349f 162 if (fp == NULL) { // if it can't open the file then print error message
KaifK 21:d5b1160f349f 163 printf("Error! Unable to open file!\n");
KaifK 21:d5b1160f349f 164 } else { // opened file so can write
KaifK 21:d5b1160f349f 165 printf("Writing to file....");
KaifK 21:d5b1160f349f 166 fprintf(fp, "%d",_highscore); // ensure data type matches
KaifK 21:d5b1160f349f 167 printf("Done.\n");
KaifK 21:d5b1160f349f 168 fclose(fp); // ensure you close the file after writing
KaifK 21:d5b1160f349f 169 }
KaifK 16:1f196a0e12be 170 }
KaifK 16:1f196a0e12be 171 int Game::get_highscore() {
KaifK 21:d5b1160f349f 172 fp = fopen("/sd/highscore.txt", "r");
KaifK 21:d5b1160f349f 173 if (fp == NULL) { // if it can't open the file then print error message
KaifK 21:d5b1160f349f 174 printf("Error! Unable to open file!\n");
KaifK 21:d5b1160f349f 175 } else { // opened file so can write
KaifK 21:d5b1160f349f 176 fscanf(fp, "%d",&_highscore); // ensure data type matches - note address operator (&)
KaifK 21:d5b1160f349f 177 //printf("Read %d from file.\n",_highscore);
KaifK 21:d5b1160f349f 178 fclose(fp); // ensure you close the file after reading
KaifK 21:d5b1160f349f 179 }
KaifK 16:1f196a0e12be 180 int val = _highscore;
KaifK 16:1f196a0e12be 181 return val;
KaifK 16:1f196a0e12be 182 }
KaifK 9:e6566d09f087 183 void Game::pointer_input() {
KaifK 9:e6566d09f087 184 updateScore();
KaifK 12:ca7329a41fc5 185 _ball->displayBackground();
KaifK 21:d5b1160f349f 186 _ball->drawBall(BALL_INIT_X, BALL_INIT_Y, 6);
KaifK 7:2a3b566aedd3 187 //draw aim pointer
KaifK 9:e6566d09f087 188 _lcd->drawLine(WIDTH / 2 - 5, 41, _x_val, HEIGHT / 2 + 7, 1);//left side
KaifK 9:e6566d09f087 189 _lcd->drawLine(WIDTH / 2 + 5, 41, _x_val, HEIGHT / 2 + 7, 1);//right side
KaifK 12:ca7329a41fc5 190 _lcd->drawLine(WIDTH / 2 + 5, 41, WIDTH / 2 - 5, 41, 1); //base
KaifK 7:2a3b566aedd3 191 _x_val += _speed;
KaifK 9:e6566d09f087 192 //printf("dir = %d \n", _speed);
KaifK 9:e6566d09f087 193 if((int)_x_val >= 70) { _speed = (-1 * _speed); }
KaifK 9:e6566d09f087 194 //pointer points out of screen i.e. 70=84 therefore, switch direction
KaifK 7:2a3b566aedd3 195 //value found through trial and error using print statement
KaifK 9:e6566d09f087 196 else if((int)_x_val <= 12) { _speed = abs(_speed); }
KaifK 9:e6566d09f087 197 _lcd->refresh();
KaifK 9:e6566d09f087 198 _lcd->clear();
KaifK 7:2a3b566aedd3 199 wait(0.01);
KaifK 7:2a3b566aedd3 200 }
KaifK 9:e6566d09f087 201 void Game::power_meter_input() {
KaifK 9:e6566d09f087 202 updateScore();
KaifK 12:ca7329a41fc5 203 _ball->displayBackground();
KaifK 21:d5b1160f349f 204 _ball->drawBall(BALL_INIT_X, BALL_INIT_Y, 6);
KaifK 7:2a3b566aedd3 205 //keep direction of pointer
KaifK 9:e6566d09f087 206 _lcd->drawLine(WIDTH / 2 - 5, 41, _x_val, HEIGHT / 2 + 7, 1);
KaifK 9:e6566d09f087 207 _lcd->drawLine(WIDTH / 2 + 5, 41, _x_val, HEIGHT / 2 + 7, 1);
KaifK 12:ca7329a41fc5 208 _lcd->drawLine(WIDTH / 2 + 5, 41, WIDTH / 2 - 5, 41, 1);
KaifK 7:2a3b566aedd3 209 //fill and empty power meter
KaifK 21:d5b1160f349f 210 _lcd->drawRect(77, 27, 6, _y_val, FILL_BLACK);
KaifK 9:e6566d09f087 211 _y_val += _speed/2;
KaifK 9:e6566d09f087 212 if((int)_y_val >= 20) { _speed = (-1 * _speed); } //power meter full
KaifK 9:e6566d09f087 213 else if((int)_y_val <= 0) { _speed = abs(_speed); } // power meter empty
KaifK 9:e6566d09f087 214 _lcd->refresh();
KaifK 9:e6566d09f087 215 _lcd->clear();
KaifK 7:2a3b566aedd3 216 wait(0.01);
KaifK 7:2a3b566aedd3 217 }
KaifK 7:2a3b566aedd3 218 void Game::convert_to_shot_x() {
KaifK 9:e6566d09f087 219 //convert from range 12-70 (range of pointer) to 0-84 (range of screen)
KaifK 9:e6566d09f087 220 _shot_x = ((((int)_x_val - 12) * (84)) / (70 - 12));
KaifK 8:5ede90f99a27 221 //ball misses goal completely
KaifK 17:2fbe40177b9c 222 if(_shot_x <=7) { _shot_x = 0;}
KaifK 17:2fbe40177b9c 223 else if(_shot_x >=77) { _shot_x = 84;}
KaifK 7:2a3b566aedd3 224 }
KaifK 7:2a3b566aedd3 225 void Game::convert_to_shot_y() {
KaifK 9:e6566d09f087 226 _shot_y = ((((int)_y_val) * (24)) / (20));
KaifK 17:2fbe40177b9c 227 if (_shot_y >= 19) {_shot_y = 19; }//shot is low, but must enter goal
KaifK 9:e6566d09f087 228 }
KaifK 9:e6566d09f087 229 int Game::random_level_gen(int limit) {
KaifK 15:5bf3f951d337 230 int number = (rand() % limit) + 1; //random level between 1-10
KaifK 15:5bf3f951d337 231 return number;
KaifK 15:5bf3f951d337 232 }
KaifK 15:5bf3f951d337 233 void Game::print_goal_message(int n) {
KaifK 15:5bf3f951d337 234 _ball->displayBackground();
KaifK 15:5bf3f951d337 235 _lcd->drawRect(0,14,84,11,FILL_WHITE);//white background
KaifK 17:2fbe40177b9c 236 _lcd->drawRect(0,14,84,11,FILL_TRANSPARENT);//black outline
KaifK 15:5bf3f951d337 237
KaifK 15:5bf3f951d337 238 switch(n) {
KaifK 15:5bf3f951d337 239 case 0:
KaifK 15:5bf3f951d337 240 _lcd->printString("MISS!",30,2);
KaifK 15:5bf3f951d337 241 break;
KaifK 15:5bf3f951d337 242 case 1:
KaifK 15:5bf3f951d337 243 _lcd->printString("GOAL!",30,2);
KaifK 15:5bf3f951d337 244 break;
KaifK 15:5bf3f951d337 245 }
KaifK 15:5bf3f951d337 246 _lcd->refresh();
KaifK 15:5bf3f951d337 247 wait(1.5);
KaifK 7:2a3b566aedd3 248 }
KaifK 20:c697902b844f 249 void timer_isr() {
KaifK 20:c697902b844f 250 sound_timer_flag = 1; // set flag in the isr
KaifK 20:c697902b844f 251 }
KaifK 7:2a3b566aedd3 252
KaifK 8:5ede90f99a27 253