ELEC2645 (2017/18) / Mbed 2 deprecated ll13jrm

Final Commit

Dependencies:   mbed

SnakeEngine/SnakeEngine.cpp@25:f03439ee32c6, 2018-05-08 (annotated)

Committer:
JRM1986
Date:
Tue May 08 10:52:12 2018 +0000
Revision:
25:f03439ee32c6
Parent:
24:4b180348826e
Child:
26:23301f48c1ed
Tidying up 1;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
JRM1986 2:ea90cec2489a 1 #include "SnakeEngine.h"
JRM1986 2:ea90cec2489a 2
JRM1986 25:f03439ee32c6 3 ///////////////// constructor/destructor /////////////////
JRM1986 2:ea90cec2489a 4
JRM1986 2:ea90cec2489a 5 SnakeEngine::SnakeEngine()
JRM1986 2:ea90cec2489a 6 {
JRM1986 2:ea90cec2489a 7
JRM1986 2:ea90cec2489a 8 }
JRM1986 2:ea90cec2489a 9
JRM1986 2:ea90cec2489a 10 SnakeEngine::~SnakeEngine()
JRM1986 2:ea90cec2489a 11 {
JRM1986 2:ea90cec2489a 12
JRM1986 7:c38800a428a6 13 }
JRM1986 23:3081be418c89 14 ///////////////// global methods /////////////////
JRM1986 17:94dd8a691d4a 15
JRM1986 16:85ca9feccf3f 16 int g_tail_length()
JRM1986 16:85ca9feccf3f 17 {
JRM1986 16:85ca9feccf3f 18
JRM1986 16:85ca9feccf3f 19 extern int g_tl;
JRM1986 16:85ca9feccf3f 20
JRM1986 16:85ca9feccf3f 21 return g_tl;
JRM1986 16:85ca9feccf3f 22
JRM1986 16:85ca9feccf3f 23 }
JRM1986 16:85ca9feccf3f 24
JRM1986 25:f03439ee32c6 25 void g_frame_time(int frame_time)
JRM1986 25:f03439ee32c6 26 {
JRM1986 25:f03439ee32c6 27
JRM1986 25:f03439ee32c6 28 g_ft = frame_time;
JRM1986 25:f03439ee32c6 29
JRM1986 25:f03439ee32c6 30 }
JRM1986 25:f03439ee32c6 31
JRM1986 17:94dd8a691d4a 32
JRM1986 24:4b180348826e 33 ///////////////// public methods /////////////////
JRM1986 24:4b180348826e 34
JRM1986 25:f03439ee32c6 35 void SnakeEngine::init(Direction in, Direction cur, int snake_pos_x, int snake_pos_y, int n_frames)
JRM1986 7:c38800a428a6 36 {
JRM1986 20:277e88a8185f 37 _snake_pos_x = snake_pos_x;
JRM1986 20:277e88a8185f 38 _snake_pos_y = snake_pos_y;
JRM1986 20:277e88a8185f 39 _in = in;
JRM1986 20:277e88a8185f 40 _cur = cur;
JRM1986 25:f03439ee32c6 41 _n_frames = n_frames;
JRM1986 25:f03439ee32c6 42 g_frame_time(_n_frames);
JRM1986 18:406fc298a7c4 43
JRM1986 20:277e88a8185f 44 _snake.init(_in, _cur, _snake_pos_x, _snake_pos_y);
JRM1986 20:277e88a8185f 45
JRM1986 18:406fc298a7c4 46 _food.init(true);
JRM1986 9:561e5681b7a6 47
JRM1986 8:a2b431b9b3f7 48 }
JRM1986 8:a2b431b9b3f7 49
JRM1986 10:62d8cb7742c3 50 void SnakeEngine::update(Gamepad &pad)
JRM1986 10:62d8cb7742c3 51 {
JRM1986 16:85ca9feccf3f 52 bool food_col;
JRM1986 25:f03439ee32c6 53 //bool wall_collsion;
JRM1986 25:f03439ee32c6 54 int food_spawn_time;
JRM1986 17:94dd8a691d4a 55 ++g_engine_fc;
JRM1986 17:94dd8a691d4a 56
JRM1986 25:f03439ee32c6 57 increase_speed(5, 1.1);
JRM1986 25:f03439ee32c6 58 food_spawn_time = food_spawning_time(5);
JRM1986 25:f03439ee32c6 59 _snake.update(_in, _cur);
JRM1986 25:f03439ee32c6 60 //_n_frames = 150;
JRM1986 25:f03439ee32c6 61 //printf("Spawn time %i \n", food_spawn_time);
JRM1986 10:62d8cb7742c3 62
JRM1986 25:f03439ee32c6 63 _food.update(_collision, food_spawn_time);
JRM1986 16:85ca9feccf3f 64 food_col = detect_food_collision(pad);
JRM1986 18:406fc298a7c4 65 _collision = food_col;
JRM1986 16:85ca9feccf3f 66 set_tail_length(food_col);
JRM1986 17:94dd8a691d4a 67 set_tail_array(pad);
JRM1986 25:f03439ee32c6 68 g_wall = detect_wall_collision(pad);
JRM1986 25:f03439ee32c6 69 //printf("%i%", g_wall);
JRM1986 10:62d8cb7742c3 70
JRM1986 10:62d8cb7742c3 71 }
JRM1986 10:62d8cb7742c3 72
JRM1986 10:62d8cb7742c3 73
JRM1986 8:a2b431b9b3f7 74 void SnakeEngine::draw(N5110 &lcd)
JRM1986 8:a2b431b9b3f7 75 {
JRM1986 8:a2b431b9b3f7 76
JRM1986 24:4b180348826e 77 // puts fram around the game area
JRM1986 24:4b180348826e 78
JRM1986 8:a2b431b9b3f7 79 lcd.drawRect(0,0,WIDTH,HEIGHT,FILL_TRANSPARENT);
JRM1986 8:a2b431b9b3f7 80 lcd.setContrast(0.5);
JRM1986 24:4b180348826e 81
JRM1986 25:f03439ee32c6 82 //_food.update(_collision);
JRM1986 8:a2b431b9b3f7 83 _food.draw(lcd);
JRM1986 10:62d8cb7742c3 84 _snake.draw(lcd);
JRM1986 17:94dd8a691d4a 85 draw_tail(lcd);
JRM1986 9:561e5681b7a6 86
JRM1986 16:85ca9feccf3f 87 }
JRM1986 16:85ca9feccf3f 88
JRM1986 24:4b180348826e 89
JRM1986 24:4b180348826e 90 void SnakeEngine::draw_tail(N5110 &lcd)
JRM1986 24:4b180348826e 91 {
JRM1986 24:4b180348826e 92 int length = g_tl;
JRM1986 24:4b180348826e 93 int c;
JRM1986 24:4b180348826e 94 c = g_engine_fc % 2;
JRM1986 24:4b180348826e 95 int i;
JRM1986 24:4b180348826e 96 int x;
JRM1986 24:4b180348826e 97 int y;
JRM1986 24:4b180348826e 98
JRM1986 24:4b180348826e 99 //printf("Odd/Even %i \n", c);
JRM1986 24:4b180348826e 100
JRM1986 24:4b180348826e 101 // runs through each segment in the tail and draws to the lcd
JRM1986 24:4b180348826e 102
JRM1986 24:4b180348826e 103 for(i=0; i<=length; ++i) {
JRM1986 24:4b180348826e 104
JRM1986 24:4b180348826e 105 // when odd draw odd array
JRM1986 24:4b180348826e 106
JRM1986 24:4b180348826e 107 if(c == 1) {
JRM1986 24:4b180348826e 108
JRM1986 24:4b180348826e 109 x = g_odd_array_x[i];
JRM1986 24:4b180348826e 110 y = g_odd_array_y[i];
JRM1986 24:4b180348826e 111
JRM1986 24:4b180348826e 112 lcd.setPixel(x,y,true);
JRM1986 24:4b180348826e 113
JRM1986 24:4b180348826e 114 }
JRM1986 24:4b180348826e 115
JRM1986 24:4b180348826e 116 // when even draw the even array
JRM1986 24:4b180348826e 117
JRM1986 24:4b180348826e 118 else if (c == 0) {
JRM1986 24:4b180348826e 119
JRM1986 24:4b180348826e 120 x = g_even_array_x[i];
JRM1986 24:4b180348826e 121 y = g_even_array_y[i];
JRM1986 24:4b180348826e 122
JRM1986 24:4b180348826e 123 lcd.setPixel(x,y,true);
JRM1986 24:4b180348826e 124
JRM1986 24:4b180348826e 125 }
JRM1986 24:4b180348826e 126
JRM1986 24:4b180348826e 127 }
JRM1986 24:4b180348826e 128 }
JRM1986 24:4b180348826e 129
JRM1986 24:4b180348826e 130
JRM1986 24:4b180348826e 131 void SnakeEngine::get_input(Gamepad &pad)
JRM1986 24:4b180348826e 132 {
JRM1986 24:4b180348826e 133
JRM1986 24:4b180348826e 134 _in = pad.get_direction();
JRM1986 24:4b180348826e 135
JRM1986 24:4b180348826e 136 }
JRM1986 24:4b180348826e 137
JRM1986 16:85ca9feccf3f 138 bool SnakeEngine::detect_food_collision(Gamepad &pad)
JRM1986 16:85ca9feccf3f 139 {
JRM1986 16:85ca9feccf3f 140 Vector2D snake_pos = _snake.get_snake_position();
JRM1986 16:85ca9feccf3f 141 Vector2D food_pos = _food.get_food_position();
JRM1986 16:85ca9feccf3f 142
JRM1986 16:85ca9feccf3f 143 bool success_flag = false;
JRM1986 16:85ca9feccf3f 144
JRM1986 24:4b180348826e 145 // when the position of the head and food are the same return true
JRM1986 24:4b180348826e 146
JRM1986 16:85ca9feccf3f 147 if((snake_pos.x == food_pos.x) && (snake_pos.y == food_pos.y)) {
JRM1986 16:85ca9feccf3f 148
JRM1986 16:85ca9feccf3f 149 success_flag = true;
JRM1986 16:85ca9feccf3f 150
JRM1986 16:85ca9feccf3f 151 }
JRM1986 16:85ca9feccf3f 152
JRM1986 16:85ca9feccf3f 153 else {
JRM1986 16:85ca9feccf3f 154
JRM1986 16:85ca9feccf3f 155 success_flag = false;
JRM1986 16:85ca9feccf3f 156
JRM1986 16:85ca9feccf3f 157 }
JRM1986 16:85ca9feccf3f 158
JRM1986 16:85ca9feccf3f 159 return success_flag;
JRM1986 16:85ca9feccf3f 160
JRM1986 16:85ca9feccf3f 161 }
JRM1986 19:b437806e579b 162 bool SnakeEngine::detect_wall_collision(Gamepad &pad)
JRM1986 19:b437806e579b 163 {
JRM1986 19:b437806e579b 164
JRM1986 19:b437806e579b 165 Vector2D snake_pos = _snake.get_snake_position();
JRM1986 19:b437806e579b 166
JRM1986 19:b437806e579b 167 bool success_flag = false;
JRM1986 19:b437806e579b 168
JRM1986 24:4b180348826e 169 // when an snake position is at an edge return true
JRM1986 24:4b180348826e 170
JRM1986 19:b437806e579b 171 if((snake_pos.x == (0 || 84)) || (snake_pos.y == (0 || 48))) {
JRM1986 19:b437806e579b 172
JRM1986 19:b437806e579b 173 success_flag = true;
JRM1986 19:b437806e579b 174
JRM1986 19:b437806e579b 175 }
JRM1986 19:b437806e579b 176
JRM1986 19:b437806e579b 177 return success_flag;
JRM1986 19:b437806e579b 178
JRM1986 19:b437806e579b 179 }
JRM1986 19:b437806e579b 180
JRM1986 19:b437806e579b 181
JRM1986 16:85ca9feccf3f 182 void SnakeEngine::set_tail_length(bool collision_detected)
JRM1986 16:85ca9feccf3f 183 {
JRM1986 24:4b180348826e 184 // when a collision is detected increment the tail length
JRM1986 16:85ca9feccf3f 185
JRM1986 16:85ca9feccf3f 186 if(collision_detected) {
JRM1986 16:85ca9feccf3f 187
JRM1986 16:85ca9feccf3f 188 ++g_tl;
JRM1986 16:85ca9feccf3f 189
JRM1986 16:85ca9feccf3f 190 }
JRM1986 16:85ca9feccf3f 191
JRM1986 16:85ca9feccf3f 192 else {
JRM1986 16:85ca9feccf3f 193
JRM1986 16:85ca9feccf3f 194 g_tl = g_tl;
JRM1986 16:85ca9feccf3f 195
JRM1986 16:85ca9feccf3f 196 }
JRM1986 16:85ca9feccf3f 197
JRM1986 16:85ca9feccf3f 198 }
JRM1986 16:85ca9feccf3f 199
JRM1986 16:85ca9feccf3f 200 int SnakeEngine::get_tail_length()
JRM1986 16:85ca9feccf3f 201 {
JRM1986 16:85ca9feccf3f 202
JRM1986 16:85ca9feccf3f 203 int length = g_tl;
JRM1986 16:85ca9feccf3f 204
JRM1986 16:85ca9feccf3f 205 return length;
JRM1986 16:85ca9feccf3f 206
JRM1986 16:85ca9feccf3f 207 }
JRM1986 24:4b180348826e 208
JRM1986 24:4b180348826e 209 void SnakeEngine::set_odd_array(Gamepad &pad)
JRM1986 24:4b180348826e 210 {
JRM1986 24:4b180348826e 211
JRM1986 24:4b180348826e 212 int i;
JRM1986 24:4b180348826e 213 int length = g_tl;
JRM1986 24:4b180348826e 214
JRM1986 24:4b180348826e 215 extern int g_even_array_x[100];
JRM1986 24:4b180348826e 216 extern int g_even_array_y[100];
JRM1986 24:4b180348826e 217
JRM1986 24:4b180348826e 218 Vector2D pos = _snake.get_snake_position();
JRM1986 24:4b180348826e 219
JRM1986 24:4b180348826e 220 // sets the first value in the array to the new position
JRM1986 24:4b180348826e 221
JRM1986 24:4b180348826e 222 g_even_array_x[0] = pos.x;
JRM1986 24:4b180348826e 223 g_even_array_y[0] = pos.y;
JRM1986 24:4b180348826e 224
JRM1986 24:4b180348826e 225 // starting from the last element in the arrays work back to zero
JRM1986 24:4b180348826e 226
JRM1986 24:4b180348826e 227 for(i = length; i >= 0; --i) {
JRM1986 24:4b180348826e 228
JRM1986 24:4b180348826e 229 // switch positions of the indexes adding the new head position
JRM1986 24:4b180348826e 230
JRM1986 24:4b180348826e 231 if(i > 0) {
JRM1986 24:4b180348826e 232
JRM1986 24:4b180348826e 233 g_odd_array_x[i] = g_even_array_x[i-1];
JRM1986 24:4b180348826e 234 g_odd_array_y[i] = g_even_array_y[i-1];
JRM1986 24:4b180348826e 235
JRM1986 24:4b180348826e 236 }
JRM1986 24:4b180348826e 237
JRM1986 24:4b180348826e 238 // when snake has no length position 0 is the new position
JRM1986 24:4b180348826e 239
JRM1986 24:4b180348826e 240 else if(i == 0) {
JRM1986 24:4b180348826e 241
JRM1986 24:4b180348826e 242 g_odd_array_x[0] = pos.x;
JRM1986 24:4b180348826e 243 g_odd_array_y[0] = pos.y;
JRM1986 24:4b180348826e 244
JRM1986 24:4b180348826e 245 }
JRM1986 24:4b180348826e 246
JRM1986 24:4b180348826e 247 }
JRM1986 24:4b180348826e 248
JRM1986 24:4b180348826e 249 }
JRM1986 24:4b180348826e 250
JRM1986 24:4b180348826e 251 void SnakeEngine::set_even_array(Gamepad &pad)
JRM1986 24:4b180348826e 252 {
JRM1986 24:4b180348826e 253
JRM1986 24:4b180348826e 254 int i;
JRM1986 24:4b180348826e 255 int length = g_tl;
JRM1986 24:4b180348826e 256
JRM1986 24:4b180348826e 257 extern int g_odd_array_x[100];
JRM1986 24:4b180348826e 258 extern int g_odd_array_y[100];
JRM1986 24:4b180348826e 259
JRM1986 24:4b180348826e 260 Vector2D pos = _snake.get_snake_position();
JRM1986 24:4b180348826e 261
JRM1986 24:4b180348826e 262 // sets the first value in the array to the new position
JRM1986 24:4b180348826e 263
JRM1986 24:4b180348826e 264 g_odd_array_x[0] = pos.x;
JRM1986 24:4b180348826e 265 g_odd_array_y[0] = pos.y;
JRM1986 24:4b180348826e 266
JRM1986 24:4b180348826e 267 // starting from the last element in the arrays work back to zero
JRM1986 24:4b180348826e 268
JRM1986 24:4b180348826e 269 for(i = length; i >= 0; --i) {
JRM1986 24:4b180348826e 270
JRM1986 24:4b180348826e 271 // switch positions of the indexes adding the new head position
JRM1986 24:4b180348826e 272
JRM1986 24:4b180348826e 273 if(i > 0) {
JRM1986 24:4b180348826e 274
JRM1986 24:4b180348826e 275 g_even_array_x[i] = g_odd_array_x[i-1];
JRM1986 24:4b180348826e 276 g_even_array_y[i] = g_odd_array_y[i-1];
JRM1986 24:4b180348826e 277
JRM1986 24:4b180348826e 278 }
JRM1986 24:4b180348826e 279
JRM1986 24:4b180348826e 280 // when snake has no length position 0 is the new position
JRM1986 24:4b180348826e 281
JRM1986 24:4b180348826e 282 else if(i == 0) {
JRM1986 24:4b180348826e 283
JRM1986 24:4b180348826e 284 g_even_array_x[0] = pos.x;
JRM1986 24:4b180348826e 285 g_even_array_y[0] = pos.y;
JRM1986 24:4b180348826e 286
JRM1986 24:4b180348826e 287 }
JRM1986 24:4b180348826e 288
JRM1986 24:4b180348826e 289 }
JRM1986 24:4b180348826e 290
JRM1986 24:4b180348826e 291 }
JRM1986 24:4b180348826e 292
JRM1986 24:4b180348826e 293
JRM1986 24:4b180348826e 294 void SnakeEngine::set_tail_array(Gamepad &pad)
JRM1986 24:4b180348826e 295 {
JRM1986 24:4b180348826e 296
JRM1986 24:4b180348826e 297 int c = g_engine_fc % 2;
JRM1986 24:4b180348826e 298
JRM1986 24:4b180348826e 299 // when the frame counter is odd set odd array
JRM1986 24:4b180348826e 300
JRM1986 24:4b180348826e 301 if(c == 1) {
JRM1986 24:4b180348826e 302
JRM1986 24:4b180348826e 303 set_odd_array(pad);
JRM1986 24:4b180348826e 304
JRM1986 24:4b180348826e 305 }
JRM1986 24:4b180348826e 306
JRM1986 24:4b180348826e 307 // when the frame counter is even set even array
JRM1986 24:4b180348826e 308
JRM1986 24:4b180348826e 309 else if (c == 0) {
JRM1986 24:4b180348826e 310
JRM1986 24:4b180348826e 311 set_even_array(pad);
JRM1986 24:4b180348826e 312
JRM1986 24:4b180348826e 313 }
JRM1986 24:4b180348826e 314
JRM1986 24:4b180348826e 315 }
JRM1986 24:4b180348826e 316
JRM1986 25:f03439ee32c6 317 int SnakeEngine::food_spawning_time(int frame_decrementer)
JRM1986 25:f03439ee32c6 318 {
JRM1986 25:f03439ee32c6 319
JRM1986 25:f03439ee32c6 320 int c = 0;
JRM1986 25:f03439ee32c6 321 c = g_tl - g_n;
JRM1986 25:f03439ee32c6 322
JRM1986 25:f03439ee32c6 323 //printf("C = %i", c);
JRM1986 25:f03439ee32c6 324
JRM1986 25:f03439ee32c6 325 if((c == 0) && (g_ft > 100)) {
JRM1986 25:f03439ee32c6 326
JRM1986 25:f03439ee32c6 327 g_n = g_n + frame_decrementer;
JRM1986 25:f03439ee32c6 328
JRM1986 25:f03439ee32c6 329 g_ft -= 10;
JRM1986 25:f03439ee32c6 330
JRM1986 25:f03439ee32c6 331 frame_decrementer += frame_decrementer;
JRM1986 25:f03439ee32c6 332
JRM1986 25:f03439ee32c6 333 }
JRM1986 25:f03439ee32c6 334
JRM1986 25:f03439ee32c6 335 return g_ft;
JRM1986 25:f03439ee32c6 336
JRM1986 25:f03439ee32c6 337 }
JRM1986 25:f03439ee32c6 338
JRM1986 25:f03439ee32c6 339 void SnakeEngine::increase_speed(int resetter, float speed_decrementer)
JRM1986 25:f03439ee32c6 340 {
JRM1986 25:f03439ee32c6 341
JRM1986 25:f03439ee32c6 342 int c = 0;
JRM1986 25:f03439ee32c6 343 c = g_tl - g_n;
JRM1986 25:f03439ee32c6 344 if(g_tl == 0) {
JRM1986 25:f03439ee32c6 345
JRM1986 25:f03439ee32c6 346 g_speed = 0.4;
JRM1986 16:85ca9feccf3f 347
JRM1986 25:f03439ee32c6 348 }
JRM1986 25:f03439ee32c6 349
JRM1986 25:f03439ee32c6 350 if(c == 0) {
JRM1986 25:f03439ee32c6 351
JRM1986 25:f03439ee32c6 352 g_n = g_n + resetter;
JRM1986 25:f03439ee32c6 353
JRM1986 25:f03439ee32c6 354 g_speed = g_speed/speed_decrementer;
JRM1986 25:f03439ee32c6 355
JRM1986 25:f03439ee32c6 356 resetter += resetter;
JRM1986 25:f03439ee32c6 357
JRM1986 25:f03439ee32c6 358 }
JRM1986 25:f03439ee32c6 359
JRM1986 25:f03439ee32c6 360 }
JRM1986 25:f03439ee32c6 361