ELEC2645 (2018/19) / Mbed 2 deprecated el17arm

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependencies:   mbed

Gameengine/Gameengine.cpp@54:7fa8c07fdea4, 2019-04-24 (annotated)

Committer:
el17arm
Date:
Wed Apr 24 20:01:25 2019 +0000
Revision:
54:7fa8c07fdea4
Parent:
49:9bea7089b657
Child:
57:0f3bbbac72fd
Full documentation

Who changed what in which revision?

UserRevisionLine numberNew contents of line
el17arm 29:d85886364643 1 #include "Gameengine.h"
el17arm 29:d85886364643 2
el17arm 41:0cf320f73424 3
el17arm 29:d85886364643 4 Gameengine::Gameengine()
el17arm 29:d85886364643 5 {
el17arm 29:d85886364643 6 }
el17arm 29:d85886364643 7
el17arm 29:d85886364643 8 Gameengine::~Gameengine()
el17arm 29:d85886364643 9 {
el17arm 29:d85886364643 10 }
el17arm 29:d85886364643 11
el17arm 45:bad704c546d4 12 //initialises default game parameters
el17arm 29:d85886364643 13 void Gameengine::game_init()
el17arm 29:d85886364643 14 {
el17arm 45:bad704c546d4 15 _enem_flag = false; // flag to initialise enemies each new level
el17arm 45:bad704c546d4 16 _key_reinit = false; // re initialise keys at start of new level
el17arm 45:bad704c546d4 17 _five_keys = 5; // number of keys to advance to next level
el17arm 49:9bea7089b657 18 _level = 0; //start level
el17arm 45:bad704c546d4 19 _sprites.miner_init(3, 33); //start position of player
el17arm 49:9bea7089b657 20 _lives = 3; // starting lives
el17arm 45:bad704c546d4 21 _time = 120; // time to complete each level
el17arm 29:d85886364643 22 }
el17arm 45:bad704c546d4 23 // updates player position and interaction with level objects
el17arm 29:d85886364643 24 void Gameengine::update(N5110 &lcd, Gamepad &pad)
el17arm 29:d85886364643 25 {
el17arm 29:d85886364643 26 read_direction(pad);
el17arm 38:55bb9da08a52 27 _sprites.miner_draw(lcd);
el17arm 33:023f57d52b1c 28 _sprites.miner_move(_d, lcd);
el17arm 33:023f57d52b1c 29 _sprites.miner_gravity(lcd);
el17arm 33:023f57d52b1c 30 _sprites.miner_jump(lcd, pad);
el17arm 33:023f57d52b1c 31 _sprites.miner_land(lcd);
el17arm 40:913339e324b8 32 _sprites.keys_collected();
el17arm 40:913339e324b8 33 key_draw(lcd, pad);
el17arm 41:0cf320f73424 34 lose_life(pad, lcd);
el17arm 29:d85886364643 35 game_over();
el17arm 29:d85886364643 36 next_level(lcd);
el17arm 41:0cf320f73424 37 oxygen_leds();
el17arm 41:0cf320f73424 38 lives_leds();
el17arm 41:0cf320f73424 39 }
el17arm 45:bad704c546d4 40 // draws level 1 objects
el17arm 41:0cf320f73424 41 void Gameengine::draw_l1(N5110 &lcd, Gamepad &pad)
el17arm 41:0cf320f73424 42 {
el17arm 41:0cf320f73424 43 if (_level == 0) {
el17arm 41:0cf320f73424 44
el17arm 45:bad704c546d4 45 _t.start(); // starts level timer
el17arm 45:bad704c546d4 46 _lev.level_platforms1(lcd); // position of platforms
el17arm 45:bad704c546d4 47 _lev.key_pos1(); // key positions
el17arm 45:bad704c546d4 48 _lev.trap_pos1(); // trap positions
el17arm 45:bad704c546d4 49 _lev.block_pos1(); // solid block positions
el17arm 45:bad704c546d4 50 _lev.soft_pos1(); // sinking block positions
el17arm 45:bad704c546d4 51 _lev.enem_pos1(); // enemy positions
el17arm 45:bad704c546d4 52 blocks(lcd); // block placement and collision settings
el17arm 41:0cf320f73424 53 }
el17arm 41:0cf320f73424 54 }
el17arm 45:bad704c546d4 55 // draws level 2 objects
el17arm 41:0cf320f73424 56 void Gameengine::draw_l2(N5110 &lcd, Gamepad &pad)
el17arm 41:0cf320f73424 57 {
el17arm 41:0cf320f73424 58 if(_level == 1) {
el17arm 41:0cf320f73424 59
el17arm 41:0cf320f73424 60 _t.start();
el17arm 45:bad704c546d4 61 key_reinit(); // re-sets key settings so they appear and disappear once collected
el17arm 42:d81c008b0436 62 _lev.level_platforms2(lcd);
el17arm 44:e29458976114 63 _lev.key_pos2();
el17arm 44:e29458976114 64 _lev.trap_pos2();
el17arm 42:d81c008b0436 65 _lev.block_pos2();
el17arm 42:d81c008b0436 66 _lev.soft_pos2();
el17arm 44:e29458976114 67 _lev.enem_pos2();
el17arm 41:0cf320f73424 68 blocks(lcd);
el17arm 41:0cf320f73424 69 }
el17arm 29:d85886364643 70 }
el17arm 45:bad704c546d4 71 // draws level 3 objects
el17arm 44:e29458976114 72 void Gameengine::draw_l3(N5110 &lcd, Gamepad &pad)
el17arm 44:e29458976114 73 {
el17arm 44:e29458976114 74 if(_level == 2) {
el17arm 44:e29458976114 75
el17arm 44:e29458976114 76 _t.start();
el17arm 44:e29458976114 77 key_reinit();
el17arm 44:e29458976114 78 _lev.level_platforms3(lcd);
el17arm 44:e29458976114 79 _lev.key_pos3();
el17arm 44:e29458976114 80 _lev.trap_pos3();
el17arm 44:e29458976114 81 _lev.block_pos3();
el17arm 44:e29458976114 82 _lev.soft_pos3();
el17arm 44:e29458976114 83 _lev.enem_pos3();
el17arm 44:e29458976114 84 blocks(lcd);
el17arm 45:bad704c546d4 85 game_complete(lcd); // displays game complete screen
el17arm 44:e29458976114 86 }
el17arm 44:e29458976114 87 }
el17arm 44:e29458976114 88
el17arm 45:bad704c546d4 89 // reads direction of joystick
el17arm 38:55bb9da08a52 90 void Gameengine::read_direction(Gamepad &pad)
el17arm 38:55bb9da08a52 91 {
el17arm 38:55bb9da08a52 92 _d = pad.get_direction();
el17arm 38:55bb9da08a52 93 }
el17arm 38:55bb9da08a52 94
el17arm 45:bad704c546d4 95 // turns off LEDS proportionally Vs level time
el17arm 41:0cf320f73424 96 int Gameengine::oxygen_leds()
el17arm 44:e29458976114 97 {
el17arm 41:0cf320f73424 98 if(_t.read() < (_time*0.33f)) {
el17arm 41:0cf320f73424 99 _oxy_state = 3;
el17arm 41:0cf320f73424 100 }
el17arm 41:0cf320f73424 101 if(_t.read() > (_time*0.33f) && _t.read() < (_time*0.66f)) {
el17arm 41:0cf320f73424 102 _oxy_state = 2;
el17arm 41:0cf320f73424 103 }
el17arm 41:0cf320f73424 104 if(_t.read() > (_time*0.66f)) {
el17arm 41:0cf320f73424 105 _oxy_state = 1;
el17arm 41:0cf320f73424 106 }
el17arm 41:0cf320f73424 107 if(_t.read() >= _time) {
el17arm 41:0cf320f73424 108 _oxy_state = 0;
el17arm 41:0cf320f73424 109 }
el17arm 46:de3462ad5aef 110 return _oxy_state; // _oxy_state will change FSM value in main.cpp leds()
el17arm 41:0cf320f73424 111 }
el17arm 41:0cf320f73424 112
el17arm 45:bad704c546d4 113 // turns off led every time life is lost
el17arm 41:0cf320f73424 114 int Gameengine::lives_leds()
el17arm 41:0cf320f73424 115 {
el17arm 41:0cf320f73424 116 _life_state = _lives;
el17arm 48:bd1f31fbfee3 117 return _life_state; // _life_state will change FSM value in main.cpp leds()
el17arm 41:0cf320f73424 118 }
el17arm 41:0cf320f73424 119
el17arm 45:bad704c546d4 120 // displays score at end of game
el17arm 41:0cf320f73424 121 void Gameengine::get_score(N5110 &lcd)
el17arm 45:bad704c546d4 122 {
el17arm 45:bad704c546d4 123 // score is, time left at each level multiplied by lives left + 10 points for each key
el17arm 41:0cf320f73424 124 float flt_score = ((_lives +1) * _total_time + (10 * _sprites.keys_collected()));
el17arm 41:0cf320f73424 125 int int_score = static_cast<int>(flt_score);
el17arm 41:0cf320f73424 126 char buffer[14];
el17arm 41:0cf320f73424 127 sprintf(buffer,"%2d",int_score);
el17arm 45:bad704c546d4 128 lcd.printString(buffer,52,2);
el17arm 41:0cf320f73424 129 printf("score = %i \n", int_score);
el17arm 44:e29458976114 130 }
el17arm 44:e29458976114 131
el17arm 45:bad704c546d4 132 // returns true final level complete
el17arm 44:e29458976114 133 bool Gameengine::game_complete(N5110 &lcd)
el17arm 44:e29458976114 134 {
el17arm 44:e29458976114 135 if(_level == 3) {
el17arm 44:e29458976114 136 return true;
el17arm 44:e29458976114 137 }
el17arm 44:e29458976114 138 return false;
el17arm 45:bad704c546d4 139 }
el17arm 45:bad704c546d4 140
el17arm 45:bad704c546d4 141 void Gameengine::lose_life(Gamepad &pad, N5110 &lcd)
el17arm 45:bad704c546d4 142 {
el17arm 45:bad704c546d4 143 if (trap_death(lcd) == true || enemies(lcd) == true) {
el17arm 45:bad704c546d4 144 _lives--; //reduces lives left by 1
el17arm 45:bad704c546d4 145 pad.tone(200, 0.5); // death sound
el17arm 45:bad704c546d4 146 _sprites.miner_init(3, 33); // puts player back to start of level
el17arm 45:bad704c546d4 147 wait(1); //short pause so restart isn't instant
el17arm 45:bad704c546d4 148 }
el17arm 45:bad704c546d4 149 }
el17arm 45:bad704c546d4 150
el17arm 45:bad704c546d4 151 // game over when lives lost or time runs out
el17arm 45:bad704c546d4 152 bool Gameengine::game_over()
el17arm 45:bad704c546d4 153 {
el17arm 45:bad704c546d4 154 if(_lives == 0 || _t.read() > _time) {
el17arm 45:bad704c546d4 155 _t.stop();
el17arm 45:bad704c546d4 156 return true;
el17arm 45:bad704c546d4 157 }
el17arm 45:bad704c546d4 158 return false;
el17arm 45:bad704c546d4 159 }
el17arm 45:bad704c546d4 160
el17arm 45:bad704c546d4 161 // activates level exit when all keys collected
el17arm 45:bad704c546d4 162 bool Gameengine::level_exit(N5110 &lcd)
el17arm 45:bad704c546d4 163 {
el17arm 54:7fa8c07fdea4 164 if(_sprites.exit_level(79,41,lcd) == true) {
el17arm 45:bad704c546d4 165 return true;
el17arm 45:bad704c546d4 166 } else {
el17arm 45:bad704c546d4 167 return false;
el17arm 45:bad704c546d4 168 }
el17arm 45:bad704c546d4 169 }
el17arm 45:bad704c546d4 170
el17arm 45:bad704c546d4 171 // if keys collected and player reaches exit, sets next level parameters
el17arm 45:bad704c546d4 172 void Gameengine::next_level(N5110 &lcd)
el17arm 45:bad704c546d4 173 {
el17arm 45:bad704c546d4 174 if(level_exit(lcd) && _sprites.keys_collected() == _five_keys) {
el17arm 45:bad704c546d4 175 _t.stop(); // stops level timer
el17arm 45:bad704c546d4 176 _total_time += (_time - _t.read()); // adds up time left for score calculation
el17arm 45:bad704c546d4 177 _level = _level++; // next level activated
el17arm 45:bad704c546d4 178 _five_keys += 5; // raises keys needed by 5 for next level
el17arm 45:bad704c546d4 179 _sprites.miner_init(3,33); // resets player position
el17arm 45:bad704c546d4 180 _enem_flag = false; // allows enemies to be reinitialised
el17arm 45:bad704c546d4 181 _key_reinit = false; // allows keys to be reintialised
el17arm 45:bad704c546d4 182 _t.reset(); // resets level timer
el17arm 45:bad704c546d4 183 }
el17arm 45:bad704c546d4 184 }
el17arm 45:bad704c546d4 185
el17arm 45:bad704c546d4 186 // places traps and checks if collision with player
el17arm 45:bad704c546d4 187 bool Gameengine::trap_death(N5110 &lcd)
el17arm 45:bad704c546d4 188 {
el17arm 45:bad704c546d4 189 int i = _level; // tells function which level settings to use
el17arm 45:bad704c546d4 190 if( _sprites.trap(_lev.trap1.tx[i], _lev.trap1.ty[i], lcd) ||
el17arm 45:bad704c546d4 191 _sprites.trap(_lev.trap2.tx[i], _lev.trap2.ty[i], lcd) ||
el17arm 45:bad704c546d4 192 _sprites.trap(_lev.trap3.tx[i], _lev.trap3.ty[i], lcd) ||
el17arm 45:bad704c546d4 193 _sprites.trap(_lev.trap4.tx[i], _lev.trap4.ty[i], lcd) ||
el17arm 45:bad704c546d4 194 _sprites.trap(_lev.trap5.tx[i], _lev.trap5.ty[i], lcd)) {
el17arm 45:bad704c546d4 195 return true;
el17arm 45:bad704c546d4 196 }
el17arm 45:bad704c546d4 197 return false;
el17arm 45:bad704c546d4 198 }
el17arm 45:bad704c546d4 199
el17arm 45:bad704c546d4 200 // draws keys and checks if collision with player
el17arm 45:bad704c546d4 201 void Gameengine::key_draw(N5110 &lcd, Gamepad &pad)
el17arm 45:bad704c546d4 202 {
el17arm 45:bad704c546d4 203 int i = _level; // tells function which level settings to use
el17arm 45:bad704c546d4 204 _sprites.key_collect(0, _lev.key1.kx[i], _lev.key1.ky[i], lcd, pad);
el17arm 45:bad704c546d4 205 _sprites.key_collect(1, _lev.key2.kx[i], _lev.key2.ky[i], lcd, pad);
el17arm 45:bad704c546d4 206 _sprites.key_collect(2, _lev.key3.kx[i], _lev.key3.ky[i], lcd, pad);
el17arm 45:bad704c546d4 207 _sprites.key_collect(3, _lev.key4.kx[i], _lev.key4.ky[i], lcd, pad);
el17arm 45:bad704c546d4 208 _sprites.key_collect(4, _lev.key5.kx[i], _lev.key5.ky[i], lcd, pad);
el17arm 45:bad704c546d4 209 }
el17arm 45:bad704c546d4 210
el17arm 46:de3462ad5aef 211
el17arm 45:bad704c546d4 212 // places and checks for collision with sinking and solid blocks
el17arm 45:bad704c546d4 213 void Gameengine::blocks(N5110 &lcd)
el17arm 45:bad704c546d4 214 {
el17arm 45:bad704c546d4 215 int i = _level; // tells function which level settings to use
el17arm 45:bad704c546d4 216 // sinking blocks position length and collision detection
el17arm 45:bad704c546d4 217 _sprites.soft_blocks(_lev.sof1.sx1[i], _lev.sof1.sy[i], _lev.sof1.sx2[i], lcd);
el17arm 45:bad704c546d4 218 _sprites.soft_blocks(_lev.sof2.sx1[i], _lev.sof2.sy[i], _lev.sof2.sx2[i], lcd);
el17arm 45:bad704c546d4 219 _sprites.soft_blocks(_lev.sof3.sx1[i], _lev.sof3.sy[i], _lev.sof3.sx2[i], lcd);
el17arm 45:bad704c546d4 220 _sprites.soft_blocks(_lev.sof4.sx1[i], _lev.sof4.sy[i], _lev.sof4.sx2[i], lcd);
el17arm 45:bad704c546d4 221 _sprites.soft_blocks(_lev.sof5.sx1[i], _lev.sof5.sy[i], _lev.sof5.sx2[i], lcd);
el17arm 45:bad704c546d4 222 // block positions and collision settings, indexed so no conflicts if player is contact with multiple blocks
el17arm 45:bad704c546d4 223 _sprites.blocks(_d, 0, _lev.sol1.bx[i], _lev.sol1.by[i], lcd);
el17arm 45:bad704c546d4 224 _sprites.blocks(_d, 1, _lev.sol2.bx[i], _lev.sol2.by[i], lcd);
el17arm 45:bad704c546d4 225 _sprites.blocks(_d, 2, _lev.sol3.bx[i], _lev.sol3.by[i], lcd);
el17arm 45:bad704c546d4 226 _sprites.blocks(_d, 3, _lev.sol4.bx[i], _lev.sol4.by[i], lcd);
el17arm 45:bad704c546d4 227 _sprites.blocks(_d, 4, _lev.sol5.bx[i], _lev.sol5.by[i], lcd);
el17arm 45:bad704c546d4 228 }
el17arm 45:bad704c546d4 229 // initialises enemies at level start, updates movement, checks collisions
el17arm 45:bad704c546d4 230 // indexed (0, 1, 2) so each enemy is treated independently
el17arm 45:bad704c546d4 231 bool Gameengine::enemies(N5110 &lcd)
el17arm 45:bad704c546d4 232 {
el17arm 45:bad704c546d4 233 int i = _level; // tells function which level settings to use
el17arm 45:bad704c546d4 234 if(_enem_flag == false) {
el17arm 45:bad704c546d4 235 // initialises enemy position and distance to move each way
el17arm 45:bad704c546d4 236 _sprites.enemy_init(0, _lev.enem1.ex[i], _lev.enem1.ey[i], _lev.enem1.d[i]);
el17arm 45:bad704c546d4 237 _sprites.enemy_init(1, _lev.enem2.ex[i], _lev.enem2.ey[i], _lev.enem2.d[i]);
el17arm 45:bad704c546d4 238 _sprites.enemy_init(2, _lev.enem3.ex[i], _lev.enem3.ey[i], _lev.enem3.d[i]);
el17arm 45:bad704c546d4 239 _enem_flag = true;
el17arm 45:bad704c546d4 240 }
el17arm 45:bad704c546d4 241 // enemy velocity
el17arm 45:bad704c546d4 242 _sprites.enemy_move(0, _lev.enem1.v[i], lcd);
el17arm 45:bad704c546d4 243 _sprites.enemy_move(1, _lev.enem2.v[i], lcd);
el17arm 45:bad704c546d4 244 _sprites.enemy_move(2, _lev.enem3.v[i], lcd);
el17arm 45:bad704c546d4 245 // checks if collision
el17arm 45:bad704c546d4 246 if(_sprites.enemy_collision(0) || _sprites.enemy_collision(1) ||
el17arm 45:bad704c546d4 247 _sprites.enemy_collision(2)) {
el17arm 45:bad704c546d4 248 return true;
el17arm 45:bad704c546d4 249 }
el17arm 45:bad704c546d4 250 return false;
el17arm 46:de3462ad5aef 251 }
el17arm 46:de3462ad5aef 252
el17arm 46:de3462ad5aef 253 // reinitialises keys when level complete
el17arm 46:de3462ad5aef 254 void Gameengine::key_reinit()
el17arm 46:de3462ad5aef 255 {
el17arm 46:de3462ad5aef 256 if(_key_reinit == false) {
el17arm 46:de3462ad5aef 257 for(int i = 0; i<5; i++) {
el17arm 46:de3462ad5aef 258 _sprites._k.key[i] = false;
el17arm 46:de3462ad5aef 259 _key_reinit = true;
el17arm 46:de3462ad5aef 260 }
el17arm 46:de3462ad5aef 261 }
el17arm 37:4d525a37d5d2 262 }