Dan Tomlinson / Mbed 2 deprecated mbed_TESTTOWER

A retro gaming programme, designed for use on a portable embedded system. Incorporates power saving techniques.

Dependencies:   ConfigFile N5110 PowerControl beep mbed

main.cpp@5:a0e4a67266d6, 2015-04-14 (annotated)

Committer:
el13drt
Date:
Tue Apr 14 19:06:53 2015 +0000
Revision:
5:a0e4a67266d6
Parent:
4:c6305031f80d
Child:
6:fa2928bcec17
post exit menu

Who changed what in which revision?

UserRevisionLine numberNew contents of line
el13drt 0:a8bc3aac5f69 1 /**
el13drt 0:a8bc3aac5f69 2 @file main.cpp
el13drt 0:a8bc3aac5f69 3 @brief Program implementation
el13drt 0:a8bc3aac5f69 4 */
el13drt 0:a8bc3aac5f69 5
el13drt 0:a8bc3aac5f69 6 #include "mbed.h"
el13drt 0:a8bc3aac5f69 7 #include "N5110.h"
el13drt 0:a8bc3aac5f69 8
el13drt 0:a8bc3aac5f69 9 #include <ctime>
el13drt 0:a8bc3aac5f69 10 #include <cstdlib>
el13drt 0:a8bc3aac5f69 11
el13drt 0:a8bc3aac5f69 12 // change this to alter tolerance of joystick direction
el13drt 0:a8bc3aac5f69 13 #define DIRECTION_TOLERANCE 0.05
el13drt 0:a8bc3aac5f69 14
el13drt 0:a8bc3aac5f69 15 // VCC,SCE,RST,D/C,MOSI,SCLK,LED - set pins for LCD
el13drt 0:a8bc3aac5f69 16 N5110 lcd(p7,p8,p9,p10,p11,p13,p22);
el13drt 0:a8bc3aac5f69 17
el13drt 0:a8bc3aac5f69 18 // navigation/action buttons
el13drt 0:a8bc3aac5f69 19 DigitalIn buttonA(p19);
el13drt 0:a8bc3aac5f69 20 DigitalIn buttonB(p20);
el13drt 0:a8bc3aac5f69 21
el13drt 3:57bab3b1c974 22 // LED indicators
el13drt 3:57bab3b1c974 23 AnalogOut ledR(p18);// RED LED
el13drt 3:57bab3b1c974 24 DigitalOut ledY(p24);// YELLOW LED
el13drt 3:57bab3b1c974 25
el13drt 0:a8bc3aac5f69 26 // connections for joystick
el13drt 3:57bab3b1c974 27 DigitalIn button(p17);
el13drt 0:a8bc3aac5f69 28 AnalogIn xPot(p15);
el13drt 0:a8bc3aac5f69 29 AnalogIn yPot(p16);
el13drt 0:a8bc3aac5f69 30
el13drt 4:c6305031f80d 31 // create local file system
el13drt 4:c6305031f80d 32 //LocalFileSytem local("local");
el13drt 4:c6305031f80d 33
el13drt 0:a8bc3aac5f69 34 // boundary conditions
el13drt 0:a8bc3aac5f69 35 int cells [84][48];
el13drt 0:a8bc3aac5f69 36
el13drt 0:a8bc3aac5f69 37 // Globabl Variables /////////////////////////
el13drt 0:a8bc3aac5f69 38
el13drt 4:c6305031f80d 39 // player's score
el13drt 4:c6305031f80d 40 int score = 0;
el13drt 4:c6305031f80d 41
el13drt 4:c6305031f80d 42 // global variables for movement (pixelNinja)
el13drt 0:a8bc3aac5f69 43 int a1 = 22;
el13drt 0:a8bc3aac5f69 44 int a2 = 24;
el13drt 0:a8bc3aac5f69 45 int a3 = 23;
el13drt 0:a8bc3aac5f69 46 int a4 = 25;
el13drt 0:a8bc3aac5f69 47 int a5 = 20;
el13drt 0:a8bc3aac5f69 48 int a6 = 26;
el13drt 0:a8bc3aac5f69 49 int a7 = 19;
el13drt 0:a8bc3aac5f69 50 int a8 = 21;
el13drt 0:a8bc3aac5f69 51
el13drt 0:a8bc3aac5f69 52 //global variable for random X co-ordinates
el13drt 0:a8bc3aac5f69 53 int randX1;
el13drt 0:a8bc3aac5f69 54 int randX2;
el13drt 0:a8bc3aac5f69 55 int randX3;
el13drt 0:a8bc3aac5f69 56 int randX4;
el13drt 0:a8bc3aac5f69 57 int randX5;
el13drt 0:a8bc3aac5f69 58 int randX6;
el13drt 0:a8bc3aac5f69 59
el13drt 0:a8bc3aac5f69 60 // global variable for random Y co-ordinates
el13drt 0:a8bc3aac5f69 61 int randY1 = 0;
el13drt 0:a8bc3aac5f69 62 int randY2 = 0;
el13drt 0:a8bc3aac5f69 63 int randY3 = 0;
el13drt 0:a8bc3aac5f69 64 int randY4 = 0;
el13drt 0:a8bc3aac5f69 65 int randY5 = 0;
el13drt 0:a8bc3aac5f69 66 int randY6 = 0;
el13drt 0:a8bc3aac5f69 67
el13drt 0:a8bc3aac5f69 68 // timer to regularly read the joystick
el13drt 0:a8bc3aac5f69 69 Ticker pollJoystick;
el13drt 1:352c50e88ffa 70
el13drt 3:57bab3b1c974 71 // serial for debug
el13drt 0:a8bc3aac5f69 72 Serial serial(USBTX,USBRX);
el13drt 0:a8bc3aac5f69 73
el13drt 0:a8bc3aac5f69 74 // create enumerated type (0,1,2,3 etc. for direction)
el13drt 0:a8bc3aac5f69 75 // could be extended for diagonals etc.
el13drt 0:a8bc3aac5f69 76 enum DirectionName {
el13drt 0:a8bc3aac5f69 77 UP,
el13drt 0:a8bc3aac5f69 78 DOWN,
el13drt 0:a8bc3aac5f69 79 LEFT,
el13drt 0:a8bc3aac5f69 80 RIGHT,
el13drt 0:a8bc3aac5f69 81 CENTRE,
el13drt 0:a8bc3aac5f69 82 UNKNOWN
el13drt 0:a8bc3aac5f69 83 };
el13drt 0:a8bc3aac5f69 84
el13drt 0:a8bc3aac5f69 85 // struct for Joystick
el13drt 0:a8bc3aac5f69 86 typedef struct JoyStick Joystick;
el13drt 0:a8bc3aac5f69 87 struct JoyStick {
el13drt 0:a8bc3aac5f69 88 float x; // current x value
el13drt 0:a8bc3aac5f69 89 float x0; // 'centred' x value
el13drt 0:a8bc3aac5f69 90 float y; // current y value
el13drt 0:a8bc3aac5f69 91 float y0; // 'centred' y value
el13drt 0:a8bc3aac5f69 92 int button; // button state (assume pull-down used, so 1 = pressed, 0 = unpressed)
el13drt 0:a8bc3aac5f69 93 DirectionName direction; // current direction
el13drt 0:a8bc3aac5f69 94 };
el13drt 0:a8bc3aac5f69 95
el13drt 0:a8bc3aac5f69 96 // create struct variable
el13drt 0:a8bc3aac5f69 97 Joystick joystick;
el13drt 0:a8bc3aac5f69 98
el13drt 0:a8bc3aac5f69 99 int printFlag = 0;
el13drt 0:a8bc3aac5f69 100
el13drt 0:a8bc3aac5f69 101 // function prototypes
el13drt 0:a8bc3aac5f69 102 void calibrateJoystick();
el13drt 0:a8bc3aac5f69 103 void updateJoystick();
el13drt 0:a8bc3aac5f69 104
el13drt 0:a8bc3aac5f69 105 //intro screen
el13drt 0:a8bc3aac5f69 106 void welcome()
el13drt 0:a8bc3aac5f69 107 {
el13drt 0:a8bc3aac5f69 108 //bottom border
el13drt 0:a8bc3aac5f69 109 lcd.drawRect(0,44,84,2,1);
el13drt 0:a8bc3aac5f69 110
el13drt 0:a8bc3aac5f69 111 //top border
el13drt 0:a8bc3aac5f69 112 lcd.drawRect(0,1,84,2,1);
el13drt 0:a8bc3aac5f69 113
el13drt 0:a8bc3aac5f69 114 //print initials 'DRT'
el13drt 0:a8bc3aac5f69 115 lcd.printChar('D',30,14);
el13drt 0:a8bc3aac5f69 116 wait(0.6);
el13drt 0:a8bc3aac5f69 117 lcd.printChar('R',37,14);
el13drt 0:a8bc3aac5f69 118 wait(0.6);
el13drt 0:a8bc3aac5f69 119 lcd.printChar('T',44,14);
el13drt 0:a8bc3aac5f69 120 wait(0.6);
el13drt 0:a8bc3aac5f69 121
el13drt 0:a8bc3aac5f69 122 //print 'presents...'
el13drt 0:a8bc3aac5f69 123 lcd.printString("presents...",8,21);
el13drt 0:a8bc3aac5f69 124 wait(1.0);
el13drt 0:a8bc3aac5f69 125
el13drt 0:a8bc3aac5f69 126 //dramatic flashing
el13drt 0:a8bc3aac5f69 127 lcd.inverseMode();
el13drt 0:a8bc3aac5f69 128 wait(0.2);
el13drt 0:a8bc3aac5f69 129 lcd.normalMode();
el13drt 0:a8bc3aac5f69 130 wait(0.2);
el13drt 0:a8bc3aac5f69 131 lcd.inverseMode();
el13drt 0:a8bc3aac5f69 132 wait(0.2);
el13drt 0:a8bc3aac5f69 133 lcd.normalMode();
el13drt 0:a8bc3aac5f69 134 wait(1.0);
el13drt 0:a8bc3aac5f69 135
el13drt 0:a8bc3aac5f69 136 //more dramatic flashing
el13drt 0:a8bc3aac5f69 137 lcd.inverseMode();
el13drt 0:a8bc3aac5f69 138 wait(0.2);
el13drt 0:a8bc3aac5f69 139 lcd.normalMode();
el13drt 0:a8bc3aac5f69 140 wait(0.2);
el13drt 0:a8bc3aac5f69 141 lcd.inverseMode();
el13drt 0:a8bc3aac5f69 142 wait(0.2);
el13drt 0:a8bc3aac5f69 143 lcd.normalMode();
el13drt 0:a8bc3aac5f69 144 wait(0.6);
el13drt 0:a8bc3aac5f69 145 }
el13drt 0:a8bc3aac5f69 146
el13drt 0:a8bc3aac5f69 147 //selection menu///////////////////////////////////////////
el13drt 0:a8bc3aac5f69 148 void mainMenu()
el13drt 0:a8bc3aac5f69 149 {
el13drt 0:a8bc3aac5f69 150 //bottom border
el13drt 0:a8bc3aac5f69 151 lcd.drawRect(0,47,84,0,1);
el13drt 0:a8bc3aac5f69 152 //top border
el13drt 0:a8bc3aac5f69 153 lcd.drawRect(0,0,84,2,1);
el13drt 0:a8bc3aac5f69 154
el13drt 0:a8bc3aac5f69 155 //print 'Xtreme Tower'
el13drt 0:a8bc3aac5f69 156 lcd.printString("Xtreme",4,25);
el13drt 0:a8bc3aac5f69 157 lcd.printString("Tower",44,25);
el13drt 0:a8bc3aac5f69 158
el13drt 0:a8bc3aac5f69 159 //title outline
el13drt 0:a8bc3aac5f69 160 lcd.drawRect(3,6,77,10,0);
el13drt 0:a8bc3aac5f69 161
el13drt 0:a8bc3aac5f69 162 ////castle //x, y, w, h, fill//////////////////////
el13drt 0:a8bc3aac5f69 163
el13drt 0:a8bc3aac5f69 164 //castle main bulk
el13drt 0:a8bc3aac5f69 165 lcd.drawRect(59,32,21,8,1);
el13drt 0:a8bc3aac5f69 166
el13drt 0:a8bc3aac5f69 167 //left window bulk
el13drt 0:a8bc3aac5f69 168 lcd.drawRect(59,22,2,10,1);
el13drt 0:a8bc3aac5f69 169 //centre left window bulk
el13drt 0:a8bc3aac5f69 170 lcd.drawRect(65,22,2,10,1);
el13drt 0:a8bc3aac5f69 171 //centre right window bulk
el13drt 0:a8bc3aac5f69 172 lcd.drawRect(72,22,2,10,1);
el13drt 0:a8bc3aac5f69 173 //right window bulk
el13drt 0:a8bc3aac5f69 174 lcd.drawRect(78,22,2,10,1);
el13drt 0:a8bc3aac5f69 175 //central window bulk
el13drt 0:a8bc3aac5f69 176 lcd.drawRect(68,25,3,7,1);
el13drt 0:a8bc3aac5f69 177
el13drt 0:a8bc3aac5f69 178 //central window bulk
el13drt 0:a8bc3aac5f69 179 lcd.drawRect(75,28,0,0,1);
el13drt 0:a8bc3aac5f69 180 lcd.drawRect(77,28,0,0,1);
el13drt 0:a8bc3aac5f69 181 lcd.drawRect(64,28,0,0,1);
el13drt 0:a8bc3aac5f69 182 lcd.drawRect(62,28,0,0,1);
el13drt 0:a8bc3aac5f69 183
el13drt 0:a8bc3aac5f69 184 //above left window bulk
el13drt 0:a8bc3aac5f69 185 lcd.drawRect(62,25,3,2,1);
el13drt 0:a8bc3aac5f69 186 //above right window bulk
el13drt 0:a8bc3aac5f69 187 lcd.drawRect(75,25,2,2,1);
el13drt 0:a8bc3aac5f69 188
el13drt 0:a8bc3aac5f69 189 //lower right line
el13drt 0:a8bc3aac5f69 190 lcd.drawRect(71,42,9,0,1);
el13drt 0:a8bc3aac5f69 191 //upper right line
el13drt 0:a8bc3aac5f69 192 lcd.drawRect(70,41,10,0,1);
el13drt 0:a8bc3aac5f69 193
el13drt 0:a8bc3aac5f69 194 //upper left line
el13drt 0:a8bc3aac5f69 195 lcd.drawRect(59,41,10,0,1);
el13drt 0:a8bc3aac5f69 196 //lower left line
el13drt 0:a8bc3aac5f69 197 lcd.drawRect(59,42,9,0,1);
el13drt 0:a8bc3aac5f69 198
el13drt 0:a8bc3aac5f69 199 //bottom left bulk
el13drt 0:a8bc3aac5f69 200 lcd.drawRect(59,43,8,3,1);
el13drt 0:a8bc3aac5f69 201 //bottom right bulk
el13drt 0:a8bc3aac5f69 202 lcd.drawRect(72,43,8,3,1);
el13drt 0:a8bc3aac5f69 203
el13drt 0:a8bc3aac5f69 204 //option arrows - lower
el13drt 0:a8bc3aac5f69 205 lcd.drawRect(27,42,4,0,1);
el13drt 0:a8bc3aac5f69 206 lcd.drawRect(28,43,2,0,1);
el13drt 0:a8bc3aac5f69 207 lcd.drawRect(29,44,0,0,1);
el13drt 0:a8bc3aac5f69 208
el13drt 0:a8bc3aac5f69 209 //option arrows - higher
el13drt 0:a8bc3aac5f69 210 lcd.drawRect(27,29,4,0,1);
el13drt 0:a8bc3aac5f69 211 lcd.drawRect(28,28,2,0,1);
el13drt 0:a8bc3aac5f69 212 lcd.drawRect(29,27,0,0,1);
el13drt 0:a8bc3aac5f69 213
el13drt 0:a8bc3aac5f69 214 //present options
el13drt 4:c6305031f80d 215 //lcd.printString("Play Game",3,4);
el13drt 0:a8bc3aac5f69 216
el13drt 0:a8bc3aac5f69 217 }
el13drt 0:a8bc3aac5f69 218
el13drt 0:a8bc3aac5f69 219 // static background
el13drt 0:a8bc3aac5f69 220 void backGround()
el13drt 0:a8bc3aac5f69 221 {
el13drt 0:a8bc3aac5f69 222 // x, y, w, h, fill - draw ground
el13drt 0:a8bc3aac5f69 223 lcd.drawRect(0,47,84,0,1);
el13drt 0:a8bc3aac5f69 224
el13drt 0:a8bc3aac5f69 225 // x, y, w, h, fill - draw left wall
el13drt 0:a8bc3aac5f69 226 lcd.drawRect(2,0,0,47,1);
el13drt 0:a8bc3aac5f69 227 // left wall - brick line 1
el13drt 0:a8bc3aac5f69 228 for(int x=0; x<47; x+=4)
el13drt 0:a8bc3aac5f69 229 lcd.drawLine(1,1,1,48,2);
el13drt 0:a8bc3aac5f69 230 // left wall - brick line 2
el13drt 0:a8bc3aac5f69 231 for(int x=0; x<47; x+=4)
el13drt 0:a8bc3aac5f69 232 lcd.drawLine(0,0,0,48,2);
el13drt 0:a8bc3aac5f69 233
el13drt 0:a8bc3aac5f69 234 // x, y, w, h, fill - draw right wall
el13drt 0:a8bc3aac5f69 235 lcd.drawRect(81,0,0,47,1);
el13drt 0:a8bc3aac5f69 236 // right wall - brick line 1
el13drt 0:a8bc3aac5f69 237 for(int x=0; x<WIDTH; x+=4)
el13drt 0:a8bc3aac5f69 238 lcd.drawLine(82,0,82,48,2);
el13drt 0:a8bc3aac5f69 239 // right wall - brick line 2
el13drt 0:a8bc3aac5f69 240 for(int x=0; x<WIDTH; x+=4)
el13drt 0:a8bc3aac5f69 241 lcd.drawLine(83,1,83,48,2);
el13drt 0:a8bc3aac5f69 242
el13drt 0:a8bc3aac5f69 243 lcd.refresh();
el13drt 0:a8bc3aac5f69 244 }
el13drt 0:a8bc3aac5f69 245
el13drt 0:a8bc3aac5f69 246 //pixel ninja character
el13drt 0:a8bc3aac5f69 247 void pixelNinja()
el13drt 0:a8bc3aac5f69 248 {
el13drt 0:a8bc3aac5f69 249 //x, y, w, h, fill - left leg
el13drt 0:a8bc3aac5f69 250 lcd.drawRect(a1,39,0,7,1);
el13drt 0:a8bc3aac5f69 251 //right leg
el13drt 0:a8bc3aac5f69 252 lcd.drawRect(a2,39,0,7,1);
el13drt 0:a8bc3aac5f69 253 //centre stick
el13drt 0:a8bc3aac5f69 254 lcd.drawRect(a3,37,0,7,1);
el13drt 0:a8bc3aac5f69 255 //back of the head
el13drt 0:a8bc3aac5f69 256 lcd.drawRect(a1,33,0,4,1);
el13drt 0:a8bc3aac5f69 257 //top of the head
el13drt 0:a8bc3aac5f69 258 lcd.drawRect(a1,33,4,0,1);
el13drt 0:a8bc3aac5f69 259 //jaw
el13drt 0:a8bc3aac5f69 260 lcd.drawRect(a2,38,2,0,1);
el13drt 0:a8bc3aac5f69 261 //right shoulder
el13drt 0:a8bc3aac5f69 262 lcd.drawRect(a4,40,1,0,1);
el13drt 0:a8bc3aac5f69 263 //left shoulder
el13drt 0:a8bc3aac5f69 264 lcd.drawRect(a5,40,1,0,1);
el13drt 0:a8bc3aac5f69 265 //left arm
el13drt 0:a8bc3aac5f69 266 lcd.drawRect(a5,41,0,1,1);
el13drt 0:a8bc3aac5f69 267 //right arm
el13drt 0:a8bc3aac5f69 268 lcd.drawRect(a6,41,0,1,1);
el13drt 0:a8bc3aac5f69 269 //right eye
el13drt 0:a8bc3aac5f69 270 lcd.drawRect(a6,35,0,0,1);
el13drt 0:a8bc3aac5f69 271 //mouth piece
el13drt 0:a8bc3aac5f69 272 lcd.drawRect(a6,37,0,0,1);
el13drt 0:a8bc3aac5f69 273 //left eye
el13drt 0:a8bc3aac5f69 274 lcd.drawRect(a2,35,0,0,1);
el13drt 0:a8bc3aac5f69 275 //sword handle
el13drt 0:a8bc3aac5f69 276 lcd.drawRect(a7,36,0,0,1);
el13drt 0:a8bc3aac5f69 277 lcd.drawRect(a5,37,0,0,1);
el13drt 0:a8bc3aac5f69 278 lcd.drawRect(a8,38,0,0,1);
el13drt 0:a8bc3aac5f69 279
el13drt 0:a8bc3aac5f69 280 }
el13drt 0:a8bc3aac5f69 281
el13drt 4:c6305031f80d 282 // resets back to initial values
el13drt 4:c6305031f80d 283 void resetGame()
el13drt 0:a8bc3aac5f69 284 {
el13drt 4:c6305031f80d 285 score = 0;
el13drt 0:a8bc3aac5f69 286
el13drt 4:c6305031f80d 287 a1 = 22;
el13drt 4:c6305031f80d 288 a2 = 24;
el13drt 4:c6305031f80d 289 a3 = 23;
el13drt 4:c6305031f80d 290 a4 = 25;
el13drt 4:c6305031f80d 291 a5 = 20;
el13drt 4:c6305031f80d 292 a6 = 26;
el13drt 4:c6305031f80d 293 a7 = 19;
el13drt 4:c6305031f80d 294 a8 = 21;
el13drt 0:a8bc3aac5f69 295
el13drt 4:c6305031f80d 296 // in this case the X values are given a
el13drt 4:c6305031f80d 297 // new random variable each time the player
el13drt 4:c6305031f80d 298 // dies or exits and starts a new game
el13drt 4:c6305031f80d 299 randX1 = rand() % 74 + 5;
el13drt 4:c6305031f80d 300 randX2 = rand() % 74 + 5;
el13drt 4:c6305031f80d 301 randX3 = rand() % 74 + 5;
el13drt 4:c6305031f80d 302 randX4 = rand() % 74 + 5;
el13drt 4:c6305031f80d 303 randX5 = rand() % 74 + 5;
el13drt 4:c6305031f80d 304 randX6 = rand() % 74 + 5;
el13drt 3:57bab3b1c974 305
el13drt 4:c6305031f80d 306 randY1 = 0;
el13drt 4:c6305031f80d 307 randY2 = 0;
el13drt 4:c6305031f80d 308 randY3 = 0;
el13drt 4:c6305031f80d 309 randY4 = 0;
el13drt 4:c6305031f80d 310 randY5 = 0;
el13drt 4:c6305031f80d 311 randY6 = 0;
el13drt 4:c6305031f80d 312 lcd.clear();
el13drt 4:c6305031f80d 313
el13drt 0:a8bc3aac5f69 314 }
el13drt 0:a8bc3aac5f69 315
el13drt 0:a8bc3aac5f69 316 // draws falling hazards
el13drt 0:a8bc3aac5f69 317 void hazards()
el13drt 0:a8bc3aac5f69 318 {
el13drt 0:a8bc3aac5f69 319 // X, Y, radius, fill
el13drt 0:a8bc3aac5f69 320 lcd.drawCircle(randX1,randY1,2,1);
el13drt 0:a8bc3aac5f69 321 lcd.drawCircle(randX2,randY2,2,1);
el13drt 0:a8bc3aac5f69 322 lcd.drawCircle(randX3,randY3,2,1);
el13drt 0:a8bc3aac5f69 323 lcd.drawCircle(randX4,randY4,2,1);
el13drt 0:a8bc3aac5f69 324 lcd.drawCircle(randX5,randY5,2,1);
el13drt 0:a8bc3aac5f69 325 lcd.drawCircle(randX6,randY6,2,1);
el13drt 0:a8bc3aac5f69 326
el13drt 0:a8bc3aac5f69 327 lcd.refresh();
el13drt 0:a8bc3aac5f69 328 }
el13drt 0:a8bc3aac5f69 329
el13drt 0:a8bc3aac5f69 330 // makes hazards fall - randomises X axis co-ordinates
el13drt 0:a8bc3aac5f69 331 void hazardFall()
el13drt 0:a8bc3aac5f69 332 {
el13drt 0:a8bc3aac5f69 333 // increments randY1 variables
el13drt 0:a8bc3aac5f69 334 // appearing to make them fall
el13drt 0:a8bc3aac5f69 335 randY1 = randY1+=2;
el13drt 0:a8bc3aac5f69 336 randY2 = randY2+=2;
el13drt 0:a8bc3aac5f69 337 randY3 = randY3+=2;
el13drt 0:a8bc3aac5f69 338 randY4 = randY4+=2;
el13drt 0:a8bc3aac5f69 339 randY5 = randY5+=2;
el13drt 0:a8bc3aac5f69 340 randY6 = randY6+=2;
el13drt 0:a8bc3aac5f69 341
el13drt 0:a8bc3aac5f69 342 // loops the objects once they 'hit the floor'
el13drt 0:a8bc3aac5f69 343 // this imitates a new set of objects falling
el13drt 0:a8bc3aac5f69 344
el13drt 0:a8bc3aac5f69 345 if (randY1>=48)
el13drt 0:a8bc3aac5f69 346 randY1=0;
el13drt 0:a8bc3aac5f69 347
el13drt 0:a8bc3aac5f69 348 if (randY2>=48)
el13drt 0:a8bc3aac5f69 349 randY2=0;
el13drt 0:a8bc3aac5f69 350
el13drt 0:a8bc3aac5f69 351 if (randY3>=48)
el13drt 0:a8bc3aac5f69 352 randY3=0;
el13drt 0:a8bc3aac5f69 353
el13drt 0:a8bc3aac5f69 354 if (randY4>=48)
el13drt 0:a8bc3aac5f69 355 randY4=0;
el13drt 0:a8bc3aac5f69 356
el13drt 0:a8bc3aac5f69 357 if (randY5>=48)
el13drt 0:a8bc3aac5f69 358 randY5=0;
el13drt 0:a8bc3aac5f69 359
el13drt 0:a8bc3aac5f69 360 // each time the objects loop, a new pseudo random value
el13drt 0:a8bc3aac5f69 361 // is assigned to the global variables (randX) to
el13drt 0:a8bc3aac5f69 362 // randomise their positions
el13drt 0:a8bc3aac5f69 363
el13drt 0:a8bc3aac5f69 364 if (randY6>=48) {
el13drt 0:a8bc3aac5f69 365 randY6=0;
el13drt 0:a8bc3aac5f69 366
el13drt 4:c6305031f80d 367 score = score++;
el13drt 4:c6305031f80d 368
el13drt 0:a8bc3aac5f69 369 randX1 = rand() % 74 + 5;// psuedo random number
el13drt 0:a8bc3aac5f69 370 randX2 = rand() % 74 + 5;// between 5 and 74
el13drt 0:a8bc3aac5f69 371 randX3 = rand() % 74 + 5;
el13drt 0:a8bc3aac5f69 372 randX4 = rand() % 74 + 5;
el13drt 0:a8bc3aac5f69 373 randX5 = rand() % 74 + 5;
el13drt 0:a8bc3aac5f69 374 randX6 = rand() % 74 + 5;
el13drt 0:a8bc3aac5f69 375 }
el13drt 0:a8bc3aac5f69 376 }
el13drt 0:a8bc3aac5f69 377
el13drt 0:a8bc3aac5f69 378 // clears old pixels and keeps set pixels
el13drt 0:a8bc3aac5f69 379 void startrek()
el13drt 0:a8bc3aac5f69 380 {
el13drt 0:a8bc3aac5f69 381 for (int i=3; i<81; i++)// loops through rows
el13drt 0:a8bc3aac5f69 382 for (int j=0; j<47; j++)
el13drt 0:a8bc3aac5f69 383 if (cells[i][j]) {// if there's a pixel then keep it
el13drt 0:a8bc3aac5f69 384 lcd.setPixel(i,j);
el13drt 0:a8bc3aac5f69 385 } else {
el13drt 0:a8bc3aac5f69 386 lcd.clearPixel(i,j);// else remove the old ones
el13drt 0:a8bc3aac5f69 387 }
el13drt 0:a8bc3aac5f69 388 lcd.refresh();
el13drt 0:a8bc3aac5f69 389 }
el13drt 0:a8bc3aac5f69 390
el13drt 3:57bab3b1c974 391 // sound / light when buttonA is closed
el13drt 3:57bab3b1c974 392 void actionButton()
el13drt 3:57bab3b1c974 393 {
el13drt 3:57bab3b1c974 394 buttonA.mode(PullDown);
el13drt 3:57bab3b1c974 395 if (buttonA == 1) {
el13drt 3:57bab3b1c974 396 ledY = 1;
el13drt 3:57bab3b1c974 397 } else {
el13drt 3:57bab3b1c974 398 ledY = 0;
el13drt 3:57bab3b1c974 399 }
el13drt 3:57bab3b1c974 400 }
el13drt 3:57bab3b1c974 401
el13drt 3:57bab3b1c974 402 // sound / light when buttonB is closed
el13drt 3:57bab3b1c974 403 void backButton()
el13drt 3:57bab3b1c974 404 {
el13drt 3:57bab3b1c974 405 buttonB.mode(PullDown);
el13drt 3:57bab3b1c974 406 if (buttonA == 1) {
el13drt 3:57bab3b1c974 407 ledY = 1;
el13drt 3:57bab3b1c974 408 } else {
el13drt 3:57bab3b1c974 409 ledY = 0;
el13drt 3:57bab3b1c974 410 }
el13drt 3:57bab3b1c974 411 }
el13drt 3:57bab3b1c974 412
el13drt 4:c6305031f80d 413 //// MAIN /////////////////////////////////////////////////
el13drt 3:57bab3b1c974 414
el13drt 0:a8bc3aac5f69 415 int main()
el13drt 0:a8bc3aac5f69 416 {
el13drt 0:a8bc3aac5f69 417 //////// set initial values - configurate joystick /////////////////////////////////
el13drt 1:352c50e88ffa 418
el13drt 3:57bab3b1c974 419 // Power indicator - RED LED
el13drt 3:57bab3b1c974 420 ledR = 1;
el13drt 3:57bab3b1c974 421
el13drt 5:a0e4a67266d6 422 int exitFlag = 0;
el13drt 5:a0e4a67266d6 423
el13drt 3:57bab3b1c974 424 // initialize time seed for psuedo randomaisation
el13drt 0:a8bc3aac5f69 425 srand (time(NULL));
el13drt 0:a8bc3aac5f69 426
el13drt 0:a8bc3aac5f69 427 // generate random x co-ordinates for falling hazards
el13drt 0:a8bc3aac5f69 428 // (initial values only)
el13drt 0:a8bc3aac5f69 429 // value between 3 and 76
el13drt 0:a8bc3aac5f69 430 randX1 = rand() % 74 + 5;
el13drt 0:a8bc3aac5f69 431 randX2 = rand() % 74 + 5;
el13drt 0:a8bc3aac5f69 432 randX3 = rand() % 74 + 5;
el13drt 0:a8bc3aac5f69 433 randX4 = rand() % 74 + 5;
el13drt 0:a8bc3aac5f69 434 randX5 = rand() % 74 + 5;
el13drt 0:a8bc3aac5f69 435 randX6 = rand() % 74 + 5;
el13drt 0:a8bc3aac5f69 436
el13drt 0:a8bc3aac5f69 437 calibrateJoystick(); // get centred values of joystick
el13drt 0:a8bc3aac5f69 438 pollJoystick.attach(&updateJoystick,1.0/10.0); // read joystick 10 times per second
el13drt 0:a8bc3aac5f69 439
el13drt 1:352c50e88ffa 440 /////// initiate main menu //////////////////////////////////////////////////////////////
el13drt 1:352c50e88ffa 441
el13drt 0:a8bc3aac5f69 442 lcd.init();//initialise screen
el13drt 0:a8bc3aac5f69 443 welcome();//welcome screen
el13drt 0:a8bc3aac5f69 444 lcd.clear();//clear pixels
el13drt 0:a8bc3aac5f69 445
el13drt 1:352c50e88ffa 446 /////// Menu Selection Loop ////////////////////////////////////////////////////////////
el13drt 1:352c50e88ffa 447
el13drt 5:a0e4a67266d6 448 // option counters
el13drt 5:a0e4a67266d6 449 int mainOption = 0;//counter for main menu
el13drt 5:a0e4a67266d6 450 int exitOption = 0;//counter for exit menu
el13drt 3:57bab3b1c974 451
el13drt 3:57bab3b1c974 452 // loop 1 - menu
el13drt 1:352c50e88ffa 453 while(1) {
el13drt 1:352c50e88ffa 454
el13drt 4:c6305031f80d 455 mainMenu();
el13drt 5:a0e4a67266d6 456 actionButton();
el13drt 4:c6305031f80d 457
el13drt 3:57bab3b1c974 458 // joystick selection
el13drt 3:57bab3b1c974 459 if (printFlag) { //if flag set, clear flag and print joystick values to serial port
el13drt 1:352c50e88ffa 460 printFlag = 0;
el13drt 1:352c50e88ffa 461 serial.printf("x = %f y = %f button = %d ",joystick.x,joystick.y,joystick.button);
el13drt 0:a8bc3aac5f69 462
el13drt 3:57bab3b1c974 463 // option up
el13drt 2:8fac5562ed1e 464 if (joystick.direction == UP) {
el13drt 1:352c50e88ffa 465 serial.printf(" UP\n");
el13drt 5:a0e4a67266d6 466 mainOption = mainOption--;
el13drt 5:a0e4a67266d6 467 if (mainOption < 0)mainOption = 0;
el13drt 2:8fac5562ed1e 468 }
el13drt 3:57bab3b1c974 469 // option down
el13drt 2:8fac5562ed1e 470 if (joystick.direction == DOWN) {
el13drt 2:8fac5562ed1e 471 serial.printf(" DOWN\n");
el13drt 5:a0e4a67266d6 472 mainOption = mainOption++;
el13drt 5:a0e4a67266d6 473 if (mainOption > 2)mainOption = 2;
el13drt 1:352c50e88ffa 474 }
el13drt 2:8fac5562ed1e 475 // Centre / Unknown orientation
el13drt 2:8fac5562ed1e 476 if (joystick.direction == CENTRE)
el13drt 2:8fac5562ed1e 477 serial.printf(" CENTRE\n");
el13drt 2:8fac5562ed1e 478 if (joystick.direction == UNKNOWN)
el13drt 2:8fac5562ed1e 479 serial.printf(" Unsupported direction\n");
el13drt 3:57bab3b1c974 480
el13drt 3:57bab3b1c974 481 // 'Play Game' option 1
el13drt 5:a0e4a67266d6 482 if (mainOption == 0) {
el13drt 1:352c50e88ffa 483 lcd.printString("Play Game",3,4);
el13drt 1:352c50e88ffa 484 }
el13drt 4:c6305031f80d 485 // 'High Scores' option 2
el13drt 5:a0e4a67266d6 486 if (mainOption == 1) {
el13drt 4:c6305031f80d 487 lcd.printString(" Scores ",3,4);
el13drt 4:c6305031f80d 488 }
el13drt 4:c6305031f80d 489 // 'Options' option 3
el13drt 5:a0e4a67266d6 490 if (mainOption == 2) {
el13drt 1:352c50e88ffa 491 lcd.printString(" Options ",3,4);
el13drt 1:352c50e88ffa 492 }
el13drt 3:57bab3b1c974 493 }
el13drt 4:c6305031f80d 494
el13drt 3:57bab3b1c974 495 //////////// Game Loop /////////////////////////////////////////////////////////////
el13drt 3:57bab3b1c974 496
el13drt 3:57bab3b1c974 497 // 'Play Game' selected
el13drt 5:a0e4a67266d6 498 if ((mainOption == 0)&&(buttonA == 1)) {
el13drt 3:57bab3b1c974 499
el13drt 4:c6305031f80d 500 lcd.clear();
el13drt 4:c6305031f80d 501
el13drt 4:c6305031f80d 502 actionButton();
el13drt 4:c6305031f80d 503 backButton();
el13drt 3:57bab3b1c974 504 backGround();
el13drt 3:57bab3b1c974 505
el13drt 4:c6305031f80d 506 // loop 3 - Game loop
el13drt 3:57bab3b1c974 507 while(1) {
el13drt 3:57bab3b1c974 508
el13drt 4:c6305031f80d 509 actionButton();
el13drt 4:c6305031f80d 510 backButton();
el13drt 4:c6305031f80d 511
el13drt 4:c6305031f80d 512 pixelNinja();//set character
el13drt 4:c6305031f80d 513 hazards();//initiates hazards
el13drt 4:c6305031f80d 514 hazardFall();//increments hazards towards floor
el13drt 4:c6305031f80d 515
el13drt 4:c6305031f80d 516 if (printFlag) { //if flag set, clear flag and print joystick values to serial port
el13drt 4:c6305031f80d 517 printFlag = 0;
el13drt 4:c6305031f80d 518 serial.printf("x = %f y = %f button = %d \n",joystick.x,joystick.y,joystick.button);
el13drt 3:57bab3b1c974 519
el13drt 4:c6305031f80d 520 // check joystick direction
el13drt 4:c6305031f80d 521 if (joystick.direction == LEFT) {
el13drt 4:c6305031f80d 522 serial.printf(" LEFT\n");
el13drt 4:c6305031f80d 523 a1 = a1-=2;
el13drt 4:c6305031f80d 524 a2 = a2-=2;
el13drt 4:c6305031f80d 525 a3 = a3-=2;
el13drt 4:c6305031f80d 526 a4 = a4-=2;
el13drt 4:c6305031f80d 527 a5 = a5-=2;
el13drt 4:c6305031f80d 528 a6 = a6-=2;
el13drt 4:c6305031f80d 529 a7 = a7-=2;
el13drt 4:c6305031f80d 530 a8 = a8-=2;
el13drt 4:c6305031f80d 531 }
el13drt 4:c6305031f80d 532 if (joystick.direction == RIGHT) {
el13drt 4:c6305031f80d 533 serial.printf(" RIGHT\n");
el13drt 4:c6305031f80d 534 a1 = a1+=2;
el13drt 4:c6305031f80d 535 a2 = a2+=2;
el13drt 4:c6305031f80d 536 a3 = a3+=2;
el13drt 4:c6305031f80d 537 a4 = a4+=2;
el13drt 4:c6305031f80d 538 a5 = a5+=2;
el13drt 4:c6305031f80d 539 a6 = a6+=2;
el13drt 4:c6305031f80d 540 a7 = a7+=2;
el13drt 4:c6305031f80d 541 a8 = a8+=2;
el13drt 4:c6305031f80d 542 }
el13drt 4:c6305031f80d 543 if (joystick.direction == CENTRE)
el13drt 4:c6305031f80d 544 serial.printf(" CENTRE\n");
el13drt 4:c6305031f80d 545 if (joystick.direction == UNKNOWN)
el13drt 4:c6305031f80d 546 serial.printf(" Unsupported direction\n");
el13drt 3:57bab3b1c974 547
el13drt 5:a0e4a67266d6 548 // integer to represent character being
el13drt 5:a0e4a67266d6 549 // struck by falling object
el13drt 5:a0e4a67266d6 550 int contactPoint = 0;
el13drt 4:c6305031f80d 551
el13drt 4:c6305031f80d 552 // contact points
el13drt 4:c6305031f80d 553 if(lcd.getPixel((a1+4),32))
el13drt 5:a0e4a67266d6 554 contactPoint++;
el13drt 4:c6305031f80d 555 if(lcd.getPixel((a1),32))
el13drt 5:a0e4a67266d6 556 contactPoint++;
el13drt 4:c6305031f80d 557 if(lcd.getPixel((a7),32))
el13drt 5:a0e4a67266d6 558 contactPoint++;
el13drt 3:57bab3b1c974 559
el13drt 5:a0e4a67266d6 560 // if contact point is not zero
el13drt 5:a0e4a67266d6 561 // character has been hit
el13drt 5:a0e4a67266d6 562 // and the game ends
el13drt 5:a0e4a67266d6 563 if ( contactPoint !=0) {
el13drt 4:c6305031f80d 564 lcd.printString("Game Over!!",8,25);
el13drt 4:c6305031f80d 565 wait(0.5);
el13drt 4:c6305031f80d 566 lcd.inverseMode();
el13drt 4:c6305031f80d 567 wait(0.5);
el13drt 4:c6305031f80d 568 lcd.normalMode();
el13drt 4:c6305031f80d 569 wait(0.5);
el13drt 4:c6305031f80d 570 lcd.inverseMode();
el13drt 4:c6305031f80d 571 wait(0.5);
el13drt 4:c6305031f80d 572 lcd.normalMode();
el13drt 4:c6305031f80d 573 wait(0.5);
el13drt 4:c6305031f80d 574 resetGame();
el13drt 4:c6305031f80d 575 break;
el13drt 4:c6305031f80d 576 }
el13drt 4:c6305031f80d 577 startrek();//clears unset pixels, keeps set pixels
el13drt 4:c6305031f80d 578
el13drt 5:a0e4a67266d6 579 ///////////////////// Exit Menu (Back button pressed)///////////////////////////////////////////
el13drt 5:a0e4a67266d6 580
el13drt 4:c6305031f80d 581 if(buttonB == 1) {
el13drt 5:a0e4a67266d6 582
el13drt 5:a0e4a67266d6 583 // set exit menu
el13drt 5:a0e4a67266d6 584 lcd.clear();
el13drt 5:a0e4a67266d6 585 lcd.drawRect(8,6,70,30,0);//title outline
el13drt 5:a0e4a67266d6 586 lcd.printString("Exit Game?",10,25);
el13drt 5:a0e4a67266d6 587 backGround();
el13drt 5:a0e4a67266d6 588
el13drt 5:a0e4a67266d6 589 while(1) {
el13drt 5:a0e4a67266d6 590
el13drt 5:a0e4a67266d6 591 if (printFlag) { //if flag set, clear flag and print joystick values to serial port
el13drt 5:a0e4a67266d6 592 printFlag = 0;
el13drt 5:a0e4a67266d6 593 serial.printf("x = %f y = %f button = %d \n",joystick.x,joystick.y,joystick.button);
el13drt 5:a0e4a67266d6 594
el13drt 5:a0e4a67266d6 595 // check joystick direction
el13drt 5:a0e4a67266d6 596 if (joystick.direction == LEFT) {
el13drt 5:a0e4a67266d6 597 serial.printf(" LEFT\n");
el13drt 5:a0e4a67266d6 598 exitOption--;
el13drt 5:a0e4a67266d6 599 if(exitOption < 0)exitOption = 0;
el13drt 5:a0e4a67266d6 600 }
el13drt 5:a0e4a67266d6 601 if (joystick.direction == RIGHT) {
el13drt 5:a0e4a67266d6 602 serial.printf(" RIGHT\n");
el13drt 5:a0e4a67266d6 603 exitOption++;
el13drt 5:a0e4a67266d6 604 if(exitOption > 1)exitOption = 1;
el13drt 5:a0e4a67266d6 605 }
el13drt 5:a0e4a67266d6 606 if (joystick.direction == CENTRE)
el13drt 5:a0e4a67266d6 607 serial.printf(" CENTRE\n");
el13drt 5:a0e4a67266d6 608 if (joystick.direction == UNKNOWN)
el13drt 5:a0e4a67266d6 609 serial.printf(" Unsupported direction\n");
el13drt 5:a0e4a67266d6 610 }
el13drt 5:a0e4a67266d6 611 // draws option cursor
el13drt 5:a0e4a67266d6 612 if(exitOption == 0) {
el13drt 5:a0e4a67266d6 613 lcd.printString("YES",28,27);
el13drt 5:a0e4a67266d6 614 }
el13drt 5:a0e4a67266d6 615 if(exitOption == 1) {
el13drt 5:a0e4a67266d6 616 lcd.printString("NO ",28,27);
el13drt 5:a0e4a67266d6 617 }
el13drt 5:a0e4a67266d6 618
el13drt 5:a0e4a67266d6 619 // exits game
el13drt 5:a0e4a67266d6 620 if((buttonA == 1)&&(exitOption == 0)) { //returns to menu
el13drt 5:a0e4a67266d6 621 actionButton();
el13drt 5:a0e4a67266d6 622 lcd.clear();//clears screen
el13drt 5:a0e4a67266d6 623 resetGame();//resets scores/objects
el13drt 5:a0e4a67266d6 624 exitFlag = 1;//sets exit flag
el13drt 5:a0e4a67266d6 625 break;
el13drt 5:a0e4a67266d6 626 }
el13drt 5:a0e4a67266d6 627 // returns to game
el13drt 5:a0e4a67266d6 628 if((buttonA == 1)&&(exitOption == 1)) {
el13drt 5:a0e4a67266d6 629 break;
el13drt 5:a0e4a67266d6 630 }
el13drt 5:a0e4a67266d6 631 }
el13drt 5:a0e4a67266d6 632 // GAME LOOP
el13drt 5:a0e4a67266d6 633
el13drt 5:a0e4a67266d6 634 if (exitFlag!=0) { //if exit flag set
el13drt 5:a0e4a67266d6 635 exitFlag = 0;//reset flag
el13drt 5:a0e4a67266d6 636 break;//break to main menu
el13drt 5:a0e4a67266d6 637 }
el13drt 4:c6305031f80d 638 }
el13drt 4:c6305031f80d 639 serial.printf("Score: %i \n",score);
el13drt 5:a0e4a67266d6 640 }
el13drt 5:a0e4a67266d6 641 }
el13drt 5:a0e4a67266d6 642 }
el13drt 4:c6305031f80d 643
el13drt 4:c6305031f80d 644 ////////// High Scores Loop //////////////////////////////////////////////////
el13drt 4:c6305031f80d 645
el13drt 5:a0e4a67266d6 646 if((mainOption == 1)&&(buttonA == 1)) {
el13drt 3:57bab3b1c974 647
el13drt 4:c6305031f80d 648 actionButton();
el13drt 4:c6305031f80d 649 backButton();
el13drt 5:a0e4a67266d6 650
el13drt 4:c6305031f80d 651 lcd.clear();//clear screen
el13drt 4:c6305031f80d 652 lcd.drawRect(3,6,77,10,0);//title outline
el13drt 4:c6305031f80d 653 backGround();//set background
el13drt 4:c6305031f80d 654 lcd.printString("High Scores",10,7);//title
el13drt 5:a0e4a67266d6 655
el13drt 4:c6305031f80d 656 while(1) {
el13drt 3:57bab3b1c974 657
el13drt 4:c6305031f80d 658 actionButton();
el13drt 4:c6305031f80d 659 backButton();
el13drt 4:c6305031f80d 660
el13drt 4:c6305031f80d 661 // back to menu
el13drt 4:c6305031f80d 662 if(buttonB == 1) {
el13drt 4:c6305031f80d 663 lcd.clear();
el13drt 4:c6305031f80d 664 break;
el13drt 4:c6305031f80d 665 }
el13drt 4:c6305031f80d 666 }
el13drt 4:c6305031f80d 667 }
el13drt 4:c6305031f80d 668
el13drt 4:c6305031f80d 669 ////////// OPTIONS LOOP /////////////////////////////////////////////////////
el13drt 3:57bab3b1c974 670
el13drt 5:a0e4a67266d6 671 if((mainOption == 2)&&(buttonA == 1)) {
el13drt 4:c6305031f80d 672
el13drt 4:c6305031f80d 673 actionButton();
el13drt 4:c6305031f80d 674 backButton();
el13drt 3:57bab3b1c974 675
el13drt 4:c6305031f80d 676 lcd.clear();//clear screen
el13drt 5:a0e4a67266d6 677
el13drt 4:c6305031f80d 678 lcd.drawRect(3,6,77,10,0);//title outline
el13drt 4:c6305031f80d 679 lcd.drawRect(0,47,84,0,1);//bottom border
el13drt 4:c6305031f80d 680 lcd.drawRect(0,0,84,2,1);//top border
el13drt 4:c6305031f80d 681 lcd.printString("Options",20,7);//title
el13drt 4:c6305031f80d 682 lcd.printString("Difficulty",5,3);//difficulty menu
el13drt 4:c6305031f80d 683 lcd.printString("Sound FX",5,4);//sounf fx on / off
el13drt 5:a0e4a67266d6 684
el13drt 4:c6305031f80d 685 while(1) {
el13drt 4:c6305031f80d 686
el13drt 4:c6305031f80d 687 actionButton();
el13drt 4:c6305031f80d 688 backButton();
el13drt 4:c6305031f80d 689
el13drt 4:c6305031f80d 690 // back to menu
el13drt 4:c6305031f80d 691 if(buttonB == 1) {
el13drt 4:c6305031f80d 692 lcd.clear();
el13drt 4:c6305031f80d 693 break;
el13drt 3:57bab3b1c974 694 }
el13drt 3:57bab3b1c974 695 }
el13drt 1:352c50e88ffa 696 }
el13drt 0:a8bc3aac5f69 697 }
el13drt 3:57bab3b1c974 698 }
el13drt 1:352c50e88ffa 699
el13drt 0:a8bc3aac5f69 700
el13drt 0:a8bc3aac5f69 701 // read default positions of the joystick to calibrate later readings
el13drt 0:a8bc3aac5f69 702 void calibrateJoystick()
el13drt 0:a8bc3aac5f69 703 {
el13drt 0:a8bc3aac5f69 704 button.mode(PullDown);
el13drt 0:a8bc3aac5f69 705 // must not move during calibration
el13drt 3:57bab3b1c974 706 joystick.x0 = xPot; //initial positions in the range 0.0 to 1.0 (0.5 if centred exactly)
el13drt 0:a8bc3aac5f69 707 joystick.y0 = yPot;
el13drt 0:a8bc3aac5f69 708 }
el13drt 0:a8bc3aac5f69 709
el13drt 0:a8bc3aac5f69 710 void updateJoystick()
el13drt 0:a8bc3aac5f69 711 {
el13drt 0:a8bc3aac5f69 712 // read current joystick values relative to calibrated values (in range -0.5 to 0.5, 0.0 is centred)
el13drt 0:a8bc3aac5f69 713 joystick.x = xPot - joystick.x0;
el13drt 0:a8bc3aac5f69 714 joystick.y = yPot - joystick.y0;
el13drt 0:a8bc3aac5f69 715 // read button state
el13drt 0:a8bc3aac5f69 716 joystick.button = button;
el13drt 0:a8bc3aac5f69 717
el13drt 0:a8bc3aac5f69 718 // calculate direction depending on x,y values
el13drt 0:a8bc3aac5f69 719 // tolerance allows a little lee-way in case joystick not exactly in the stated direction
el13drt 0:a8bc3aac5f69 720 if ( fabs(joystick.y) < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
el13drt 0:a8bc3aac5f69 721 joystick.direction = CENTRE;
el13drt 0:a8bc3aac5f69 722 } else if ( joystick.y > DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
el13drt 0:a8bc3aac5f69 723 joystick.direction = UP;
el13drt 0:a8bc3aac5f69 724 } else if ( joystick.y < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
el13drt 0:a8bc3aac5f69 725 joystick.direction = DOWN;
el13drt 0:a8bc3aac5f69 726 } else if ( joystick.x > DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
el13drt 0:a8bc3aac5f69 727 joystick.direction = RIGHT;
el13drt 0:a8bc3aac5f69 728 } else if ( joystick.x < DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
el13drt 0:a8bc3aac5f69 729 joystick.direction = LEFT;
el13drt 0:a8bc3aac5f69 730 } else {
el13drt 0:a8bc3aac5f69 731 joystick.direction = UNKNOWN;
el13drt 0:a8bc3aac5f69 732 }
el13drt 0:a8bc3aac5f69 733
el13drt 0:a8bc3aac5f69 734 // set flag for printing
el13drt 0:a8bc3aac5f69 735 printFlag = 1;
el13drt 0:a8bc3aac5f69 736 }
el13drt 0:a8bc3aac5f69 737
el13drt 0:a8bc3aac5f69 738