Eric Xu / Mbed 2 deprecated Arcade_RedX

Multi-game multiplayer arcade gaming system meant for the red X when playing Super Tic-Tac-Toe.

Dependencies:   uLCD_4DGL_SE PinDetect SDFileSystem mbed wave_player

Ghost.h@2:d35fde2d82cd, 2015-12-04 (annotated)

Committer:
soapy12312
Date:
Fri Dec 04 23:03:08 2015 +0000
Revision:
2:d35fde2d82cd
Parent:
1:2a7e2f5aeda4 
Multi-game multiplayer arcade gaming system meant for the red X when playing Super Tic-Tac-Toe.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
soapy12312 0:218d3fb75950 1 /******************************************************
soapy12312 2:d35fde2d82cd 2 * This header program declares all the functions and
soapy12312 2:d35fde2d82cd 3 * variables used by Ghost players in Pac-Man.
soapy12312 0:218d3fb75950 4 ******************************************************/
soapy12312 0:218d3fb75950 5
soapy12312 0:218d3fb75950 6
soapy12312 0:218d3fb75950 7 // Ghost class
soapy12312 0:218d3fb75950 8 class Ghost {
soapy12312 0:218d3fb75950 9 public:
soapy12312 0:218d3fb75950 10 // Ghost constructor
soapy12312 1:2a7e2f5aeda4 11 Ghost(int color, Pacman& pacman, PinDetect &ghostRight, PinDetect &ghostDown, PinDetect &ghostLeft, PinDetect &ghostUp, Stage& stage, uLCD_4DGL& uLCD) :
soapy12312 1:2a7e2f5aeda4 12 color(color), pacman(pacman), ghostRight(ghostRight), ghostDown(ghostDown), ghostLeft(ghostLeft), ghostUp(ghostUp), stage(stage), uLCD(uLCD) {
soapy12312 0:218d3fb75950 13 // Use internal pullups
soapy12312 0:218d3fb75950 14 ghostRight.mode(PullUp);
soapy12312 0:218d3fb75950 15 ghostDown.mode(PullUp);
soapy12312 0:218d3fb75950 16 ghostLeft.mode(PullUp);
soapy12312 0:218d3fb75950 17 ghostUp.mode(PullUp);
soapy12312 0:218d3fb75950 18 wait(0.01);
soapy12312 0:218d3fb75950 19 // Interrupt callback functions
soapy12312 0:218d3fb75950 20 ghostRight.attach_deasserted(this, &Ghost::ghostRightTrigger);
soapy12312 0:218d3fb75950 21 ghostDown.attach_deasserted(this, &Ghost::ghostDownTrigger);
soapy12312 0:218d3fb75950 22 ghostLeft.attach_deasserted(this, &Ghost::ghostLeftTrigger);
soapy12312 0:218d3fb75950 23 ghostUp.attach_deasserted(this, &Ghost::ghostUpTrigger);
soapy12312 0:218d3fb75950 24 wait(0.01);
soapy12312 0:218d3fb75950 25 // Set sampling frequency
soapy12312 0:218d3fb75950 26 ghostRight.setSampleFrequency();
soapy12312 0:218d3fb75950 27 ghostDown.setSampleFrequency();
soapy12312 0:218d3fb75950 28 ghostLeft.setSampleFrequency();
soapy12312 0:218d3fb75950 29 ghostUp.setSampleFrequency();
soapy12312 0:218d3fb75950 30 wait(1);
soapy12312 0:218d3fb75950 31 }
soapy12312 0:218d3fb75950 32
soapy12312 0:218d3fb75950 33 // Initialize the ghost at the beginning of the game
soapy12312 0:218d3fb75950 34 void initialize(int xCoordinate, int yCoordinate, int facingDirection) {
soapy12312 0:218d3fb75950 35 startingX = xCoordinate;
soapy12312 0:218d3fb75950 36 startingY = yCoordinate;
soapy12312 0:218d3fb75950 37 x = xCoordinate;
soapy12312 0:218d3fb75950 38 y = yCoordinate;
soapy12312 0:218d3fb75950 39 direction = facingDirection;
soapy12312 0:218d3fb75950 40 immobile = false;
soapy12312 0:218d3fb75950 41 draw(x, y);
soapy12312 0:218d3fb75950 42 }
soapy12312 0:218d3fb75950 43
soapy12312 0:218d3fb75950 44 // Move the ghost
soapy12312 0:218d3fb75950 45 void move() {
soapy12312 0:218d3fb75950 46 // If Pac-Man died
soapy12312 0:218d3fb75950 47 if (pacman.dead == true) {
soapy12312 0:218d3fb75950 48 // Reset the ghost
soapy12312 0:218d3fb75950 49 erase(x, y);
soapy12312 0:218d3fb75950 50 reinitialize();
soapy12312 0:218d3fb75950 51 pacman.dead = false;
soapy12312 0:218d3fb75950 52 }
soapy12312 0:218d3fb75950 53
soapy12312 0:218d3fb75950 54 // If the ghost is not moving
soapy12312 0:218d3fb75950 55 if (immobile == true) {
soapy12312 0:218d3fb75950 56 // Reset the ghost
soapy12312 0:218d3fb75950 57 erase(x, y);
soapy12312 0:218d3fb75950 58 stage.redrawPacDots();
soapy12312 0:218d3fb75950 59 reinitialize();
soapy12312 0:218d3fb75950 60 }
soapy12312 0:218d3fb75950 61
soapy12312 0:218d3fb75950 62 // Move the ghost in its current direction
soapy12312 0:218d3fb75950 63 switch (direction) {
soapy12312 0:218d3fb75950 64 case FACERIGHT:
soapy12312 0:218d3fb75950 65 moveRight();
soapy12312 0:218d3fb75950 66 break;
soapy12312 0:218d3fb75950 67 case FACEDOWN:
soapy12312 0:218d3fb75950 68 moveDown();
soapy12312 0:218d3fb75950 69 break;
soapy12312 0:218d3fb75950 70 case FACELEFT:
soapy12312 0:218d3fb75950 71 moveLeft();
soapy12312 0:218d3fb75950 72 break;
soapy12312 0:218d3fb75950 73 case FACEUP:
soapy12312 0:218d3fb75950 74 moveUp();
soapy12312 0:218d3fb75950 75 break;
soapy12312 0:218d3fb75950 76 default:
soapy12312 0:218d3fb75950 77 break;
soapy12312 0:218d3fb75950 78 }
soapy12312 0:218d3fb75950 79
soapy12312 0:218d3fb75950 80 // If Pac-Man and the ghost occupy the same position
soapy12312 0:218d3fb75950 81 if ((abs(pacman.x - x) < 5) && (abs(pacman.y - y) < 5)) {
soapy12312 0:218d3fb75950 82 // If Pac-Man is not invincible
soapy12312 0:218d3fb75950 83 if (pacman.powerUp == 0) {
soapy12312 0:218d3fb75950 84 // Reset Pac-Man and the ghost
soapy12312 0:218d3fb75950 85 pacman.ghostsEaten = 0;
soapy12312 0:218d3fb75950 86 pacman.erase(pacman.x, pacman.y);
soapy12312 0:218d3fb75950 87 erase(x, y);
soapy12312 0:218d3fb75950 88 pacman.draw(pacman.x, pacman.y);
soapy12312 0:218d3fb75950 89 wait(0.5);
soapy12312 0:218d3fb75950 90 pacman.die();
soapy12312 0:218d3fb75950 91 pacman.dead = true;
soapy12312 0:218d3fb75950 92 reinitialize();
soapy12312 0:218d3fb75950 93 // If Pac-Man is invincible
soapy12312 0:218d3fb75950 94 } else {
soapy12312 0:218d3fb75950 95 // Reset the ghost
soapy12312 0:218d3fb75950 96 pacman.ghostsEaten++;
soapy12312 0:218d3fb75950 97 pacman.score += pacman.ghostsEaten * 200;
soapy12312 0:218d3fb75950 98 pacman.scoreChanged = true;
soapy12312 0:218d3fb75950 99 erase(x, y);
soapy12312 0:218d3fb75950 100 stage.redrawPacDots();
soapy12312 0:218d3fb75950 101 pacman.draw(pacman.x, pacman.y);
soapy12312 0:218d3fb75950 102 wait(0.5);
soapy12312 0:218d3fb75950 103 reinitialize();
soapy12312 0:218d3fb75950 104 }
soapy12312 0:218d3fb75950 105 }
soapy12312 0:218d3fb75950 106 }
soapy12312 0:218d3fb75950 107
soapy12312 0:218d3fb75950 108
soapy12312 0:218d3fb75950 109 private:
soapy12312 0:218d3fb75950 110 int color;
soapy12312 0:218d3fb75950 111 Pacman& pacman;
soapy12312 0:218d3fb75950 112 PinDetect &ghostRight;
soapy12312 0:218d3fb75950 113 PinDetect &ghostDown;
soapy12312 0:218d3fb75950 114 PinDetect &ghostLeft;
soapy12312 0:218d3fb75950 115 PinDetect &ghostUp;
soapy12312 0:218d3fb75950 116 Stage& stage;
soapy12312 0:218d3fb75950 117 uLCD_4DGL& uLCD;
soapy12312 0:218d3fb75950 118 int startingX;
soapy12312 0:218d3fb75950 119 int startingY;
soapy12312 0:218d3fb75950 120 int x;
soapy12312 0:218d3fb75950 121 int y;
soapy12312 0:218d3fb75950 122 volatile int previousDirection;
soapy12312 0:218d3fb75950 123 int direction;
soapy12312 0:218d3fb75950 124 volatile int nextDirection;
soapy12312 0:218d3fb75950 125 bool immobile;
soapy12312 0:218d3fb75950 126
soapy12312 0:218d3fb75950 127 // Set the next direction to be right
soapy12312 0:218d3fb75950 128 void ghostRightTrigger() {
soapy12312 0:218d3fb75950 129 previousDirection = (direction + 2) % 4;
soapy12312 0:218d3fb75950 130
soapy12312 0:218d3fb75950 131 if (previousDirection != FACERIGHT) {
soapy12312 0:218d3fb75950 132 nextDirection = FACERIGHT;
soapy12312 0:218d3fb75950 133 }
soapy12312 0:218d3fb75950 134 }
soapy12312 0:218d3fb75950 135
soapy12312 0:218d3fb75950 136 // Set the next direction to be down
soapy12312 0:218d3fb75950 137 void ghostDownTrigger() {
soapy12312 0:218d3fb75950 138 previousDirection = (direction + 2) % 4;
soapy12312 0:218d3fb75950 139
soapy12312 0:218d3fb75950 140 if (previousDirection != FACEDOWN) {
soapy12312 0:218d3fb75950 141 nextDirection = FACEDOWN;
soapy12312 0:218d3fb75950 142 }
soapy12312 0:218d3fb75950 143 }
soapy12312 0:218d3fb75950 144
soapy12312 0:218d3fb75950 145 // Set the next direction to be left
soapy12312 0:218d3fb75950 146 void ghostLeftTrigger() {
soapy12312 0:218d3fb75950 147 previousDirection = (direction + 2) % 4;
soapy12312 0:218d3fb75950 148
soapy12312 0:218d3fb75950 149 if (previousDirection != FACELEFT) {
soapy12312 0:218d3fb75950 150 nextDirection = FACELEFT;
soapy12312 0:218d3fb75950 151 }
soapy12312 0:218d3fb75950 152 }
soapy12312 0:218d3fb75950 153
soapy12312 0:218d3fb75950 154 // Set the next direction to be up
soapy12312 0:218d3fb75950 155 void ghostUpTrigger() {
soapy12312 0:218d3fb75950 156 previousDirection = (direction + 2) % 4;
soapy12312 0:218d3fb75950 157
soapy12312 0:218d3fb75950 158 if (previousDirection != FACEUP) {
soapy12312 0:218d3fb75950 159 nextDirection = FACEUP;
soapy12312 0:218d3fb75950 160 }
soapy12312 0:218d3fb75950 161 }
soapy12312 0:218d3fb75950 162
soapy12312 0:218d3fb75950 163 // Reset function for each ghost
soapy12312 0:218d3fb75950 164 void reinitialize() {
soapy12312 0:218d3fb75950 165 // Red ghost reset
soapy12312 0:218d3fb75950 166 if (color == RED) {
soapy12312 0:218d3fb75950 167 initialize(startingX, startingY, FACELEFT);
soapy12312 0:218d3fb75950 168 // Yellow ghost reset
soapy12312 0:218d3fb75950 169 } else if (color == YELLOW) {
soapy12312 0:218d3fb75950 170 initialize(startingX, startingY, FACERIGHT);
soapy12312 0:218d3fb75950 171 }
soapy12312 0:218d3fb75950 172 }
soapy12312 0:218d3fb75950 173
soapy12312 0:218d3fb75950 174 // Draw the ghost based on its direction
soapy12312 0:218d3fb75950 175 void draw(int xCoordinate, int yCoordinate) {
soapy12312 0:218d3fb75950 176 // Outer bound rectangular coordinates of the ghost
soapy12312 0:218d3fb75950 177 int x1 = xCoordinate - 3;
soapy12312 0:218d3fb75950 178 int x2 = xCoordinate + 3;
soapy12312 0:218d3fb75950 179 int y1 = yCoordinate - 3;
soapy12312 0:218d3fb75950 180 int y2 = yCoordinate + 3;
soapy12312 0:218d3fb75950 181
soapy12312 0:218d3fb75950 182 // If Pac-Man is currently invincible
soapy12312 0:218d3fb75950 183 if (pacman.powerUp > 0) {
soapy12312 0:218d3fb75950 184 // Draw the ghost in blue
soapy12312 0:218d3fb75950 185 uLCD.filled_rectangle(x1, y1, x2, y2, BLUE);
soapy12312 0:218d3fb75950 186 // If Pac-Man is not currently invincible
soapy12312 0:218d3fb75950 187 } else {
soapy12312 0:218d3fb75950 188 // Draw the ghost in its original color
soapy12312 0:218d3fb75950 189 uLCD.filled_rectangle(x1, y1, x2, y2, color);
soapy12312 0:218d3fb75950 190 }
soapy12312 0:218d3fb75950 191
soapy12312 0:218d3fb75950 192 // Specify the pixels
soapy12312 0:218d3fb75950 193 uLCD.pixel(x1, y1, BLACK);
soapy12312 0:218d3fb75950 194 uLCD.pixel(x2, y1, BLACK);
soapy12312 0:218d3fb75950 195 uLCD.pixel(xCoordinate - 2, y2, BLACK);
soapy12312 0:218d3fb75950 196 uLCD.pixel(xCoordinate, y2, BLACK);
soapy12312 0:218d3fb75950 197 uLCD.pixel(xCoordinate + 2, y2, BLACK);
soapy12312 0:218d3fb75950 198 uLCD.pixel(x1, yCoordinate - 1, WHITE);
soapy12312 0:218d3fb75950 199 uLCD.pixel(xCoordinate - 2, yCoordinate - 2, WHITE);
soapy12312 0:218d3fb75950 200 uLCD.pixel(xCoordinate - 2, yCoordinate - 1, WHITE);
soapy12312 0:218d3fb75950 201 uLCD.pixel(xCoordinate - 2, yCoordinate, WHITE);
soapy12312 0:218d3fb75950 202 uLCD.pixel(xCoordinate - 1, yCoordinate - 1, WHITE);
soapy12312 0:218d3fb75950 203 uLCD.pixel(x2, yCoordinate - 1, WHITE);
soapy12312 0:218d3fb75950 204 uLCD.pixel(xCoordinate + 2, yCoordinate - 2, WHITE);
soapy12312 0:218d3fb75950 205 uLCD.pixel(xCoordinate + 2, yCoordinate - 1, WHITE);
soapy12312 0:218d3fb75950 206 uLCD.pixel(xCoordinate + 2, yCoordinate, WHITE);
soapy12312 0:218d3fb75950 207 uLCD.pixel(xCoordinate + 1, yCoordinate - 1, WHITE);
soapy12312 0:218d3fb75950 208
soapy12312 0:218d3fb75950 209 // Draw the ghost's eyes based on its current direction
soapy12312 0:218d3fb75950 210 switch (direction) {
soapy12312 0:218d3fb75950 211 case FACERIGHT:
soapy12312 0:218d3fb75950 212 uLCD.pixel(xCoordinate - 1, yCoordinate - 1, BLACK);
soapy12312 0:218d3fb75950 213 uLCD.pixel(x2, yCoordinate - 1, BLACK);
soapy12312 0:218d3fb75950 214 break;
soapy12312 0:218d3fb75950 215 case FACEDOWN:
soapy12312 0:218d3fb75950 216 uLCD.pixel(xCoordinate - 2, yCoordinate, BLACK);
soapy12312 0:218d3fb75950 217 uLCD.pixel(xCoordinate + 2, yCoordinate, BLACK);
soapy12312 0:218d3fb75950 218 break;
soapy12312 0:218d3fb75950 219 case FACELEFT:
soapy12312 0:218d3fb75950 220 uLCD.pixel(x1, yCoordinate - 1, BLACK);
soapy12312 0:218d3fb75950 221 uLCD.pixel(xCoordinate + 1, yCoordinate - 1, BLACK);
soapy12312 0:218d3fb75950 222 break;
soapy12312 0:218d3fb75950 223 case FACEUP:
soapy12312 0:218d3fb75950 224 uLCD.pixel(xCoordinate - 2, yCoordinate - 2, BLACK);
soapy12312 0:218d3fb75950 225 uLCD.pixel(xCoordinate + 2, yCoordinate - 2, BLACK);
soapy12312 0:218d3fb75950 226 break;
soapy12312 0:218d3fb75950 227 default:
soapy12312 0:218d3fb75950 228 break;
soapy12312 0:218d3fb75950 229 }
soapy12312 0:218d3fb75950 230 }
soapy12312 0:218d3fb75950 231
soapy12312 0:218d3fb75950 232 // Erase the ghost from the given position
soapy12312 0:218d3fb75950 233 void erase(int xCoordinate, int yCoordinate) {
soapy12312 0:218d3fb75950 234 int x1 = xCoordinate - 3;
soapy12312 0:218d3fb75950 235 int x2 = xCoordinate + 3;
soapy12312 0:218d3fb75950 236 int y1 = yCoordinate - 3;
soapy12312 0:218d3fb75950 237 int y2 = yCoordinate + 3;
soapy12312 0:218d3fb75950 238 uLCD.filled_rectangle(x1, y1, x2, y2, BLACK);
soapy12312 0:218d3fb75950 239 }
soapy12312 0:218d3fb75950 240
soapy12312 0:218d3fb75950 241 // Move the ghost right
soapy12312 0:218d3fb75950 242 void moveRight() {
soapy12312 0:218d3fb75950 243 // If the space to the right is a valid position and is not the rightmost space
soapy12312 0:218d3fb75950 244 if ((stage.positions[x + 1][y] != 0) && (x != 124)) {
soapy12312 0:218d3fb75950 245 // The ghost is mobile
soapy12312 0:218d3fb75950 246 immobile = false;
soapy12312 0:218d3fb75950 247 // Erase the ghost from its current position
soapy12312 0:218d3fb75950 248 erase(x, y);
soapy12312 0:218d3fb75950 249 // Increment the ghost's x-coordinate
soapy12312 0:218d3fb75950 250 x++;
soapy12312 0:218d3fb75950 251
soapy12312 0:218d3fb75950 252 // If passed over a pac dot
soapy12312 0:218d3fb75950 253 if (stage.positions[x - 4][y] == 2) {
soapy12312 0:218d3fb75950 254 // Redraw the pac dot
soapy12312 0:218d3fb75950 255 uLCD.pixel(x - 4, y, YELLOW);
soapy12312 0:218d3fb75950 256 // If passed over a big pac dot
soapy12312 0:218d3fb75950 257 } else {
soapy12312 0:218d3fb75950 258 // Redraw the big pac dot
soapy12312 0:218d3fb75950 259 for (int i = x - 2; i >= x - 5; i--) {
soapy12312 0:218d3fb75950 260 if (stage.positions[i][y] == 3) {
soapy12312 0:218d3fb75950 261 uLCD.filled_circle(i, y, 1, YELLOW);
soapy12312 0:218d3fb75950 262 }
soapy12312 0:218d3fb75950 263 }
soapy12312 0:218d3fb75950 264 }
soapy12312 0:218d3fb75950 265
soapy12312 0:218d3fb75950 266 // Draw the ghost in its new position
soapy12312 0:218d3fb75950 267 draw(x, y);
soapy12312 0:218d3fb75950 268 // If the space to the right is not a valid positions
soapy12312 0:218d3fb75950 269 } else if (stage.positions[x + 1][y] == 0) {
soapy12312 0:218d3fb75950 270 // The ghost is immobile
soapy12312 0:218d3fb75950 271 immobile = true;
soapy12312 0:218d3fb75950 272 wait(0.03);
soapy12312 0:218d3fb75950 273 }
soapy12312 0:218d3fb75950 274
soapy12312 0:218d3fb75950 275 // If the rightmost position is reached
soapy12312 0:218d3fb75950 276 if (x == 124) {
soapy12312 0:218d3fb75950 277 // The ghost is mobile
soapy12312 0:218d3fb75950 278 immobile = false;
soapy12312 0:218d3fb75950 279 // Erase the ghost from its current position
soapy12312 0:218d3fb75950 280 erase(x, y);
soapy12312 0:218d3fb75950 281 // Set the ghost's x-coordinate to 4
soapy12312 0:218d3fb75950 282 x = 4;
soapy12312 0:218d3fb75950 283
soapy12312 0:218d3fb75950 284 // If passed over a pac dot
soapy12312 0:218d3fb75950 285 if (stage.positions[124][68] == 2) {
soapy12312 0:218d3fb75950 286 // Redraw the pac dot
soapy12312 0:218d3fb75950 287 uLCD.pixel(124, 68, YELLOW);
soapy12312 0:218d3fb75950 288 }
soapy12312 0:218d3fb75950 289
soapy12312 0:218d3fb75950 290 // Draw the ghost in its new position
soapy12312 0:218d3fb75950 291 draw(x, y);
soapy12312 0:218d3fb75950 292 }
soapy12312 0:218d3fb75950 293
soapy12312 0:218d3fb75950 294 // If Pac-Man's invincibility status changed
soapy12312 0:218d3fb75950 295 if (pacman.powerUpChanged == true) {
soapy12312 0:218d3fb75950 296 // Change the color of the ghost
soapy12312 0:218d3fb75950 297 draw(x, y);
soapy12312 0:218d3fb75950 298 // Reset Pac-Man's invincibility status change
soapy12312 0:218d3fb75950 299 pacman.powerUpChanged = false;
soapy12312 0:218d3fb75950 300 }
soapy12312 0:218d3fb75950 301
soapy12312 0:218d3fb75950 302 // Set the ghost's next direction
soapy12312 0:218d3fb75950 303 switch (nextDirection) {
soapy12312 0:218d3fb75950 304 case FACEDOWN:
soapy12312 0:218d3fb75950 305 if (stage.positions[x][y + 1] != 0) {
soapy12312 0:218d3fb75950 306 direction = nextDirection;
soapy12312 0:218d3fb75950 307 }
soapy12312 0:218d3fb75950 308
soapy12312 0:218d3fb75950 309 break;
soapy12312 0:218d3fb75950 310 case FACELEFT:
soapy12312 0:218d3fb75950 311 if (stage.positions[x - 1][y] != 0) {
soapy12312 0:218d3fb75950 312 direction = nextDirection;
soapy12312 0:218d3fb75950 313 }
soapy12312 0:218d3fb75950 314
soapy12312 0:218d3fb75950 315 break;
soapy12312 0:218d3fb75950 316 case FACEUP:
soapy12312 0:218d3fb75950 317 if (stage.positions[x][y - 1] != 0) {
soapy12312 0:218d3fb75950 318 direction = nextDirection;
soapy12312 0:218d3fb75950 319 }
soapy12312 0:218d3fb75950 320
soapy12312 0:218d3fb75950 321 break;
soapy12312 0:218d3fb75950 322 default:
soapy12312 0:218d3fb75950 323 break;
soapy12312 0:218d3fb75950 324 }
soapy12312 0:218d3fb75950 325 }
soapy12312 0:218d3fb75950 326
soapy12312 0:218d3fb75950 327 // Move the ghost down
soapy12312 0:218d3fb75950 328 void moveDown() {
soapy12312 0:218d3fb75950 329 // If the space in the downward direction is a valid position
soapy12312 0:218d3fb75950 330 if (stage.positions[x][y + 1] != 0) {
soapy12312 0:218d3fb75950 331 // The ghost is mobile
soapy12312 0:218d3fb75950 332 immobile = false;
soapy12312 0:218d3fb75950 333 // Erase the ghost from its current position
soapy12312 0:218d3fb75950 334 erase(x, y);
soapy12312 0:218d3fb75950 335 // Increment the ghost's y-coordinate
soapy12312 0:218d3fb75950 336 y++;
soapy12312 0:218d3fb75950 337
soapy12312 0:218d3fb75950 338 // If passed over a pac dot
soapy12312 0:218d3fb75950 339 if (stage.positions[x][y - 4] == 2) {
soapy12312 0:218d3fb75950 340 // Redraw the pac dot
soapy12312 0:218d3fb75950 341 uLCD.pixel(x, y - 4, YELLOW);
soapy12312 0:218d3fb75950 342 // If passed over a big pac dot
soapy12312 0:218d3fb75950 343 } else {
soapy12312 0:218d3fb75950 344 // Redraw the big pac dot
soapy12312 0:218d3fb75950 345 for (int j = y - 2; j >= y - 5; j--) {
soapy12312 0:218d3fb75950 346 if (stage.positions[x][j] == 3) {
soapy12312 0:218d3fb75950 347 uLCD.filled_circle(x, j, 1, YELLOW);
soapy12312 0:218d3fb75950 348 }
soapy12312 0:218d3fb75950 349 }
soapy12312 0:218d3fb75950 350 }
soapy12312 0:218d3fb75950 351
soapy12312 0:218d3fb75950 352 // Draw the ghost in its new position
soapy12312 0:218d3fb75950 353 draw(x, y);
soapy12312 0:218d3fb75950 354 // If the space in the downward direction is not a valid position
soapy12312 0:218d3fb75950 355 } else {
soapy12312 0:218d3fb75950 356 // The ghost is immobile
soapy12312 0:218d3fb75950 357 immobile = true;
soapy12312 0:218d3fb75950 358 wait(0.03);
soapy12312 0:218d3fb75950 359 }
soapy12312 0:218d3fb75950 360
soapy12312 0:218d3fb75950 361 // If Pac-Man's invincibility status changed
soapy12312 0:218d3fb75950 362 if (pacman.powerUpChanged == true) {
soapy12312 0:218d3fb75950 363 // Change the color of the ghost
soapy12312 0:218d3fb75950 364 draw(x, y);
soapy12312 0:218d3fb75950 365 // Reset Pac-Man's invincibility status change
soapy12312 0:218d3fb75950 366 pacman.powerUpChanged = false;
soapy12312 0:218d3fb75950 367 }
soapy12312 0:218d3fb75950 368
soapy12312 0:218d3fb75950 369 // Set the ghost's next direction
soapy12312 0:218d3fb75950 370 switch (nextDirection) {
soapy12312 0:218d3fb75950 371 case FACERIGHT:
soapy12312 0:218d3fb75950 372 if (stage.positions[x + 1][y] != 0) {
soapy12312 0:218d3fb75950 373 direction = nextDirection;
soapy12312 0:218d3fb75950 374 }
soapy12312 0:218d3fb75950 375
soapy12312 0:218d3fb75950 376 break;
soapy12312 0:218d3fb75950 377 case FACELEFT:
soapy12312 0:218d3fb75950 378 if (stage.positions[x - 1][y] != 0) {
soapy12312 0:218d3fb75950 379 direction = nextDirection;
soapy12312 0:218d3fb75950 380 }
soapy12312 0:218d3fb75950 381
soapy12312 0:218d3fb75950 382 break;
soapy12312 0:218d3fb75950 383 case FACEUP:
soapy12312 0:218d3fb75950 384 if (stage.positions[x][y - 1] != 0) {
soapy12312 0:218d3fb75950 385 direction = nextDirection;
soapy12312 0:218d3fb75950 386 }
soapy12312 0:218d3fb75950 387
soapy12312 0:218d3fb75950 388 break;
soapy12312 0:218d3fb75950 389 default:
soapy12312 0:218d3fb75950 390 break;
soapy12312 0:218d3fb75950 391 }
soapy12312 0:218d3fb75950 392 }
soapy12312 0:218d3fb75950 393
soapy12312 0:218d3fb75950 394 // Move the ghost left
soapy12312 0:218d3fb75950 395 void moveLeft() {
soapy12312 0:218d3fb75950 396 // If the space to the left is a valid position and is not the leftmost space
soapy12312 0:218d3fb75950 397 if ((stage.positions[x - 1][y] != 0) && (x != 4)) {
soapy12312 0:218d3fb75950 398 // The ghost is mobile
soapy12312 0:218d3fb75950 399 immobile = false;
soapy12312 0:218d3fb75950 400 // Erase the ghost from its current position
soapy12312 0:218d3fb75950 401 erase(x, y);
soapy12312 0:218d3fb75950 402 // Decrement the ghost's x-coordinate
soapy12312 0:218d3fb75950 403 x--;
soapy12312 0:218d3fb75950 404
soapy12312 0:218d3fb75950 405 // If passed over a pac dot
soapy12312 0:218d3fb75950 406 if (stage.positions[x + 4][y] == 2) {
soapy12312 0:218d3fb75950 407 // Redraw the pac dot
soapy12312 0:218d3fb75950 408 uLCD.pixel(x + 4, y, YELLOW);
soapy12312 0:218d3fb75950 409 // If passed over a big pac dot
soapy12312 0:218d3fb75950 410 } else {
soapy12312 0:218d3fb75950 411 // Redraw the big pac dot
soapy12312 0:218d3fb75950 412 for (int i = x + 2; i <= x + 5; i++) {
soapy12312 0:218d3fb75950 413 if (stage.positions[i][y] == 3) {
soapy12312 0:218d3fb75950 414 uLCD.filled_circle(i, y, 1, YELLOW);
soapy12312 0:218d3fb75950 415 }
soapy12312 0:218d3fb75950 416 }
soapy12312 0:218d3fb75950 417 }
soapy12312 0:218d3fb75950 418
soapy12312 0:218d3fb75950 419 // Draw the ghost in its new position
soapy12312 0:218d3fb75950 420 draw(x, y);
soapy12312 0:218d3fb75950 421 // If the space to the left is not a valid position
soapy12312 0:218d3fb75950 422 } else if (stage.positions[x - 1][y] == 0) {
soapy12312 0:218d3fb75950 423 // The ghost is immobile
soapy12312 0:218d3fb75950 424 immobile = true;
soapy12312 0:218d3fb75950 425 wait(0.03);
soapy12312 0:218d3fb75950 426 }
soapy12312 0:218d3fb75950 427
soapy12312 0:218d3fb75950 428 // If the leftmost position is reached
soapy12312 0:218d3fb75950 429 if (x == 4) {
soapy12312 0:218d3fb75950 430 // The ghost is mobile
soapy12312 0:218d3fb75950 431 immobile = false;
soapy12312 0:218d3fb75950 432 // Erase the ghost from its current position
soapy12312 0:218d3fb75950 433 erase(x, y);
soapy12312 0:218d3fb75950 434 // Set the ghost's x-coordinate to 124
soapy12312 0:218d3fb75950 435 x = 124;
soapy12312 0:218d3fb75950 436
soapy12312 0:218d3fb75950 437 // If passed over a pac dot
soapy12312 0:218d3fb75950 438 if (stage.positions[4][68] == 2) {
soapy12312 0:218d3fb75950 439 // Redraw the pac dot
soapy12312 0:218d3fb75950 440 uLCD.pixel(4, 68, YELLOW);
soapy12312 0:218d3fb75950 441 }
soapy12312 0:218d3fb75950 442
soapy12312 0:218d3fb75950 443 // Draw the ghost in its new position
soapy12312 0:218d3fb75950 444 draw(x, y);
soapy12312 0:218d3fb75950 445 }
soapy12312 0:218d3fb75950 446
soapy12312 0:218d3fb75950 447 // If Pac-Man's invincibility status changed
soapy12312 0:218d3fb75950 448 if (pacman.powerUpChanged == true) {
soapy12312 0:218d3fb75950 449 // Change the color of the ghost
soapy12312 0:218d3fb75950 450 draw(x, y);
soapy12312 0:218d3fb75950 451 // Reset Pac-Man's invincibility status change
soapy12312 0:218d3fb75950 452 pacman.powerUpChanged = false;
soapy12312 0:218d3fb75950 453 }
soapy12312 0:218d3fb75950 454
soapy12312 0:218d3fb75950 455 // Set the ghost's next direction
soapy12312 0:218d3fb75950 456 switch (nextDirection) {
soapy12312 0:218d3fb75950 457 case FACERIGHT:
soapy12312 0:218d3fb75950 458 if (stage.positions[x + 1][y] != 0) {
soapy12312 0:218d3fb75950 459 direction = nextDirection;
soapy12312 0:218d3fb75950 460 }
soapy12312 0:218d3fb75950 461
soapy12312 0:218d3fb75950 462 break;
soapy12312 0:218d3fb75950 463 case FACEDOWN:
soapy12312 0:218d3fb75950 464 if (stage.positions[x][y + 1] != 0) {
soapy12312 0:218d3fb75950 465 direction = nextDirection;
soapy12312 0:218d3fb75950 466 }
soapy12312 0:218d3fb75950 467
soapy12312 0:218d3fb75950 468 break;
soapy12312 0:218d3fb75950 469 case FACEUP:
soapy12312 0:218d3fb75950 470 if (stage.positions[x][y - 1] != 0) {
soapy12312 0:218d3fb75950 471 direction = nextDirection;
soapy12312 0:218d3fb75950 472 }
soapy12312 0:218d3fb75950 473
soapy12312 0:218d3fb75950 474 break;
soapy12312 0:218d3fb75950 475 default:
soapy12312 0:218d3fb75950 476 break;
soapy12312 0:218d3fb75950 477 }
soapy12312 0:218d3fb75950 478 }
soapy12312 0:218d3fb75950 479
soapy12312 0:218d3fb75950 480 // Move the ghost up
soapy12312 0:218d3fb75950 481 void moveUp() {
soapy12312 0:218d3fb75950 482 // If the space in the upward direction is a valid position
soapy12312 0:218d3fb75950 483 if (stage.positions[x][y - 1] != 0) {
soapy12312 0:218d3fb75950 484 // The ghost is mobile
soapy12312 0:218d3fb75950 485 immobile = false;
soapy12312 0:218d3fb75950 486 // Erase the ghost from its current position
soapy12312 0:218d3fb75950 487 erase(x, y);
soapy12312 0:218d3fb75950 488 // Decrement the ghost's y-coordinate
soapy12312 0:218d3fb75950 489 y--;
soapy12312 0:218d3fb75950 490
soapy12312 0:218d3fb75950 491 // If passed over a pac dot
soapy12312 0:218d3fb75950 492 if (stage.positions[x][y + 4] == 2) {
soapy12312 0:218d3fb75950 493 // Redraw the pac dot
soapy12312 0:218d3fb75950 494 uLCD.pixel(x, y + 4, YELLOW);
soapy12312 0:218d3fb75950 495 // If passed over a big pac dot
soapy12312 0:218d3fb75950 496 } else {
soapy12312 0:218d3fb75950 497 // Redraw the big pac dot
soapy12312 0:218d3fb75950 498 for (int j = y + 2; j <= y + 5; j++) {
soapy12312 0:218d3fb75950 499 if (stage.positions[x][j] == 3) {
soapy12312 0:218d3fb75950 500 uLCD.filled_circle(x, j, 1, YELLOW);
soapy12312 0:218d3fb75950 501 }
soapy12312 0:218d3fb75950 502 }
soapy12312 0:218d3fb75950 503 }
soapy12312 0:218d3fb75950 504
soapy12312 0:218d3fb75950 505 // Draw the ghost in its new position
soapy12312 0:218d3fb75950 506 draw(x, y);
soapy12312 0:218d3fb75950 507 // If the space in the upward direction is not a valid position
soapy12312 0:218d3fb75950 508 } else {
soapy12312 0:218d3fb75950 509 // The ghost is immobile
soapy12312 0:218d3fb75950 510 immobile = true;
soapy12312 0:218d3fb75950 511 wait(0.03);
soapy12312 0:218d3fb75950 512 }
soapy12312 0:218d3fb75950 513
soapy12312 0:218d3fb75950 514 // If Pac-Man's invincibility status changed
soapy12312 0:218d3fb75950 515 if (pacman.powerUpChanged == true) {
soapy12312 0:218d3fb75950 516 // Change the color of the ghost
soapy12312 0:218d3fb75950 517 draw(x, y);
soapy12312 0:218d3fb75950 518 // Reset Pac-Man's invincibility status change
soapy12312 0:218d3fb75950 519 pacman.powerUpChanged = false;
soapy12312 0:218d3fb75950 520 }
soapy12312 0:218d3fb75950 521
soapy12312 0:218d3fb75950 522 // Set the ghost's next direction
soapy12312 0:218d3fb75950 523 switch (nextDirection) {
soapy12312 0:218d3fb75950 524 case FACERIGHT:
soapy12312 0:218d3fb75950 525 if (stage.positions[x + 1][y] != 0) {
soapy12312 0:218d3fb75950 526 direction = nextDirection;
soapy12312 0:218d3fb75950 527 }
soapy12312 0:218d3fb75950 528
soapy12312 0:218d3fb75950 529 break;
soapy12312 0:218d3fb75950 530 case FACEDOWN:
soapy12312 0:218d3fb75950 531 if (stage.positions[x][y + 1] != 0) {
soapy12312 0:218d3fb75950 532 direction = nextDirection;
soapy12312 0:218d3fb75950 533 }
soapy12312 0:218d3fb75950 534
soapy12312 0:218d3fb75950 535 break;
soapy12312 0:218d3fb75950 536 case FACELEFT:
soapy12312 0:218d3fb75950 537 if (stage.positions[x - 1][y] != 0) {
soapy12312 0:218d3fb75950 538 direction = nextDirection;
soapy12312 0:218d3fb75950 539 }
soapy12312 0:218d3fb75950 540
soapy12312 0:218d3fb75950 541 break;
soapy12312 0:218d3fb75950 542 default:
soapy12312 0:218d3fb75950 543 break;
soapy12312 0:218d3fb75950 544 }
soapy12312 0:218d3fb75950 545 }
soapy12312 0:218d3fb75950 546 };