Anna Bridge / microbit-letter-game

Simple game

main.cpp@0:c0ff9a7daaac, 2016-04-13 (annotated)

Committer:
AnnaBridge
Date:
Wed Apr 13 16:20:53 2016 +0000
Revision:
0:c0ff9a7daaac
First version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 0:c0ff9a7daaac 1 /*
AnnaBridge 0:c0ff9a7daaac 2 The MIT License (MIT)
AnnaBridge 0:c0ff9a7daaac 3 Copyright (c) 2016 British Broadcasting Corporation.
AnnaBridge 0:c0ff9a7daaac 4 This software is provided by Lancaster University by arrangement with the BBC.
AnnaBridge 0:c0ff9a7daaac 5 Permission is hereby granted, free of charge, to any person obtaining a
AnnaBridge 0:c0ff9a7daaac 6 copy of this software and associated documentation files (the "Software"),
AnnaBridge 0:c0ff9a7daaac 7 to deal in the Software without restriction, including without limitation
AnnaBridge 0:c0ff9a7daaac 8 the rights to use, copy, modify, merge, publish, distribute, sublicense,
AnnaBridge 0:c0ff9a7daaac 9 and/or sell copies of the Software, and to permit persons to whom the
AnnaBridge 0:c0ff9a7daaac 10 Software is furnished to do so, subject to the following conditions:
AnnaBridge 0:c0ff9a7daaac 11 The above copyright notice and this permission notice shall be included in
AnnaBridge 0:c0ff9a7daaac 12 all copies or substantial portions of the Software.
AnnaBridge 0:c0ff9a7daaac 13 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
AnnaBridge 0:c0ff9a7daaac 14 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
AnnaBridge 0:c0ff9a7daaac 15 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
AnnaBridge 0:c0ff9a7daaac 16 THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
AnnaBridge 0:c0ff9a7daaac 17 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
AnnaBridge 0:c0ff9a7daaac 18 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
AnnaBridge 0:c0ff9a7daaac 19 DEALINGS IN THE SOFTWARE.
AnnaBridge 0:c0ff9a7daaac 20 */
AnnaBridge 0:c0ff9a7daaac 21
AnnaBridge 0:c0ff9a7daaac 22 /* The letter game....
AnnaBridge 0:c0ff9a7daaac 23
AnnaBridge 0:c0ff9a7daaac 24 This simple game demonstrates the use of:
AnnaBridge 0:c0ff9a7daaac 25 1) The random function
AnnaBridge 0:c0ff9a7daaac 26 2) Events on the message bus to handle button presses
AnnaBridge 0:c0ff9a7daaac 27 3) Driving the display for both characters, numbers and animations.
AnnaBridge 0:c0ff9a7daaac 28 4) The system timer
AnnaBridge 0:c0ff9a7daaac 29
AnnaBridge 0:c0ff9a7daaac 30 The start of the game will be preceeded by the following message:
AnnaBridge 0:c0ff9a7daaac 31 "Get Ready.."
AnnaBridge 0:c0ff9a7daaac 32 and then a small animation showing shrinking boxes.
AnnaBridge 0:c0ff9a7daaac 33 Once the game starts a random letter from A-Z will be displayed on the screen.
AnnaBridge 0:c0ff9a7daaac 34 If it is a consonant then you press the right button.
AnnaBridge 0:c0ff9a7daaac 35 If it is a vowel then you press the left button.
AnnaBridge 0:c0ff9a7daaac 36 You must press the corresponding button within the time period for the current level.
AnnaBridge 0:c0ff9a7daaac 37 Each time you level up, the time to respond decreases. When you level up the shrinking
AnnaBridge 0:c0ff9a7daaac 38 box animation will be displayed again.
AnnaBridge 0:c0ff9a7daaac 39
AnnaBridge 0:c0ff9a7daaac 40 The initial allowed time is defined as INITIAL_LIMIT.
AnnaBridge 0:c0ff9a7daaac 41 The amount by which the time allowed decreases at each level is defined by SPEEDUP.
AnnaBridge 0:c0ff9a7daaac 42 The point at which a level up occurs is defined as LEVEL_UP.
AnnaBridge 0:c0ff9a7daaac 43
AnnaBridge 0:c0ff9a7daaac 44 */
AnnaBridge 0:c0ff9a7daaac 45
AnnaBridge 0:c0ff9a7daaac 46 #include "MicroBit.h"
AnnaBridge 0:c0ff9a7daaac 47 #include <stdio.h>
AnnaBridge 0:c0ff9a7daaac 48
AnnaBridge 0:c0ff9a7daaac 49 void level_up();
AnnaBridge 0:c0ff9a7daaac 50 void start();
AnnaBridge 0:c0ff9a7daaac 51 void game_over();
AnnaBridge 0:c0ff9a7daaac 52 void display_letter();
AnnaBridge 0:c0ff9a7daaac 53 void check_press(unsigned long delay);
AnnaBridge 0:c0ff9a7daaac 54 void onButtonA(MicroBitEvent e);
AnnaBridge 0:c0ff9a7daaac 55 void onButtonB(MicroBitEvent e);
AnnaBridge 0:c0ff9a7daaac 56
AnnaBridge 0:c0ff9a7daaac 57
AnnaBridge 0:c0ff9a7daaac 58 MicroBit uBit;
AnnaBridge 0:c0ff9a7daaac 59
AnnaBridge 0:c0ff9a7daaac 60 #define INITIAL_LIMIT 2000 //ms
AnnaBridge 0:c0ff9a7daaac 61 #define SPEEDUP 200 //ms
AnnaBridge 0:c0ff9a7daaac 62 #define LEVEL_UP 20 // level/speed up each time score accumulates by this amount
AnnaBridge 0:c0ff9a7daaac 63
AnnaBridge 0:c0ff9a7daaac 64 typedef enum
AnnaBridge 0:c0ff9a7daaac 65 {
AnnaBridge 0:c0ff9a7daaac 66 NONE,
AnnaBridge 0:c0ff9a7daaac 67 VOWEL,
AnnaBridge 0:c0ff9a7daaac 68 CONSONANT,
AnnaBridge 0:c0ff9a7daaac 69 LATE_PRESS
AnnaBridge 0:c0ff9a7daaac 70 } Letter_type;
AnnaBridge 0:c0ff9a7daaac 71
AnnaBridge 0:c0ff9a7daaac 72 Letter_type buttonPress = NONE;
AnnaBridge 0:c0ff9a7daaac 73 Letter_type type = NONE;
AnnaBridge 0:c0ff9a7daaac 74 unsigned long time_val;
AnnaBridge 0:c0ff9a7daaac 75 unsigned long limit;
AnnaBridge 0:c0ff9a7daaac 76 unsigned score = 0;
AnnaBridge 0:c0ff9a7daaac 77
AnnaBridge 0:c0ff9a7daaac 78 void level_up()
AnnaBridge 0:c0ff9a7daaac 79 {
AnnaBridge 0:c0ff9a7daaac 80 MicroBitImage outer("255,255,255,255,255\n255,0,0,0,255\n255,0,0,0,255\n255,0,0,0,255\n255,255,255,255,255\n");
AnnaBridge 0:c0ff9a7daaac 81 uBit.display.print(outer, 0, 0);
AnnaBridge 0:c0ff9a7daaac 82 uBit.sleep(200);
AnnaBridge 0:c0ff9a7daaac 83 MicroBitImage middle("0,0,0,0,0\n0,255,255,255,0\n0,255,0,255,0\n0,255,0,255,0\n0,0,0,0,0\n");
AnnaBridge 0:c0ff9a7daaac 84 uBit.display.print(middle, 0, 0);
AnnaBridge 0:c0ff9a7daaac 85 uBit.sleep(200);
AnnaBridge 0:c0ff9a7daaac 86 MicroBitImage inner("0,0,0,0,0\n0,0,0,0,0\n0,0,255,0,0\n0,0,0,0,0\n0,0,0,0,0\n");
AnnaBridge 0:c0ff9a7daaac 87 uBit.display.print(inner, 0, 0);
AnnaBridge 0:c0ff9a7daaac 88 uBit.sleep(200);
AnnaBridge 0:c0ff9a7daaac 89 uBit.display.print(middle, 0, 0);
AnnaBridge 0:c0ff9a7daaac 90 uBit.sleep(200);
AnnaBridge 0:c0ff9a7daaac 91 uBit.display.print(outer, 0, 0);
AnnaBridge 0:c0ff9a7daaac 92 uBit.sleep(200);
AnnaBridge 0:c0ff9a7daaac 93 uBit.display.clear();
AnnaBridge 0:c0ff9a7daaac 94 uBit.sleep(300);
AnnaBridge 0:c0ff9a7daaac 95 }
AnnaBridge 0:c0ff9a7daaac 96
AnnaBridge 0:c0ff9a7daaac 97 void start()
AnnaBridge 0:c0ff9a7daaac 98 {
AnnaBridge 0:c0ff9a7daaac 99 score = 0;
AnnaBridge 0:c0ff9a7daaac 100 limit = INITIAL_LIMIT;
AnnaBridge 0:c0ff9a7daaac 101 uBit.display.clear();
AnnaBridge 0:c0ff9a7daaac 102 uBit.display.scroll("GET READY...", 100);
AnnaBridge 0:c0ff9a7daaac 103 uBit.sleep(500);
AnnaBridge 0:c0ff9a7daaac 104 level_up();
AnnaBridge 0:c0ff9a7daaac 105 uBit.sleep(500);
AnnaBridge 0:c0ff9a7daaac 106 display_letter();
AnnaBridge 0:c0ff9a7daaac 107 }
AnnaBridge 0:c0ff9a7daaac 108
AnnaBridge 0:c0ff9a7daaac 109 void game_over()
AnnaBridge 0:c0ff9a7daaac 110 {
AnnaBridge 0:c0ff9a7daaac 111 char val[5];
AnnaBridge 0:c0ff9a7daaac 112 uBit.display.clear();
AnnaBridge 0:c0ff9a7daaac 113 uBit.display.scroll("GAME OVER!", 100);
AnnaBridge 0:c0ff9a7daaac 114 uBit.display.scroll("SCORE = ");
AnnaBridge 0:c0ff9a7daaac 115 sprintf(val,"%u", score);
AnnaBridge 0:c0ff9a7daaac 116 uBit.display.scroll(val, 100);
AnnaBridge 0:c0ff9a7daaac 117 }
AnnaBridge 0:c0ff9a7daaac 118
AnnaBridge 0:c0ff9a7daaac 119
AnnaBridge 0:c0ff9a7daaac 120 void display_letter()
AnnaBridge 0:c0ff9a7daaac 121 {
AnnaBridge 0:c0ff9a7daaac 122 // random number from 65 - 90 ie ASCII A-Z
AnnaBridge 0:c0ff9a7daaac 123 char letter = uBit.random(26) + 65;
AnnaBridge 0:c0ff9a7daaac 124
AnnaBridge 0:c0ff9a7daaac 125 switch(letter)
AnnaBridge 0:c0ff9a7daaac 126 {
AnnaBridge 0:c0ff9a7daaac 127 case 'A':
AnnaBridge 0:c0ff9a7daaac 128 case 'E':
AnnaBridge 0:c0ff9a7daaac 129 case 'I':
AnnaBridge 0:c0ff9a7daaac 130 case 'O':
AnnaBridge 0:c0ff9a7daaac 131 case 'U':
AnnaBridge 0:c0ff9a7daaac 132 type = VOWEL;
AnnaBridge 0:c0ff9a7daaac 133 break;
AnnaBridge 0:c0ff9a7daaac 134
AnnaBridge 0:c0ff9a7daaac 135 default:
AnnaBridge 0:c0ff9a7daaac 136 type = CONSONANT;
AnnaBridge 0:c0ff9a7daaac 137 }
AnnaBridge 0:c0ff9a7daaac 138
AnnaBridge 0:c0ff9a7daaac 139 uBit.display.printChar(letter,500);
AnnaBridge 0:c0ff9a7daaac 140 //uBit.sleep(limit);
AnnaBridge 0:c0ff9a7daaac 141 uBit.display.clear();
AnnaBridge 0:c0ff9a7daaac 142 time_val = uBit.systemTime();
AnnaBridge 0:c0ff9a7daaac 143 }
AnnaBridge 0:c0ff9a7daaac 144
AnnaBridge 0:c0ff9a7daaac 145 void check_press(unsigned long delay)
AnnaBridge 0:c0ff9a7daaac 146 {
AnnaBridge 0:c0ff9a7daaac 147 if (buttonPress == type && delay <= limit)
AnnaBridge 0:c0ff9a7daaac 148 {
AnnaBridge 0:c0ff9a7daaac 149 score++;
AnnaBridge 0:c0ff9a7daaac 150 if ((score % LEVEL_UP) == 0 && limit > SPEEDUP)
AnnaBridge 0:c0ff9a7daaac 151 {
AnnaBridge 0:c0ff9a7daaac 152 // Increase speed
AnnaBridge 0:c0ff9a7daaac 153 limit -= SPEEDUP;
AnnaBridge 0:c0ff9a7daaac 154 level_up();
AnnaBridge 0:c0ff9a7daaac 155 }
AnnaBridge 0:c0ff9a7daaac 156 buttonPress = NONE;
AnnaBridge 0:c0ff9a7daaac 157 display_letter();
AnnaBridge 0:c0ff9a7daaac 158 }
AnnaBridge 0:c0ff9a7daaac 159 else
AnnaBridge 0:c0ff9a7daaac 160 {
AnnaBridge 0:c0ff9a7daaac 161 game_over();
AnnaBridge 0:c0ff9a7daaac 162 uBit.sleep(1000);
AnnaBridge 0:c0ff9a7daaac 163 start();
AnnaBridge 0:c0ff9a7daaac 164 }
AnnaBridge 0:c0ff9a7daaac 165
AnnaBridge 0:c0ff9a7daaac 166 }
AnnaBridge 0:c0ff9a7daaac 167
AnnaBridge 0:c0ff9a7daaac 168 void onButtonA(MicroBitEvent e)
AnnaBridge 0:c0ff9a7daaac 169 {
AnnaBridge 0:c0ff9a7daaac 170 if (e.value == MICROBIT_BUTTON_EVT_CLICK)
AnnaBridge 0:c0ff9a7daaac 171 {
AnnaBridge 0:c0ff9a7daaac 172 unsigned long delay = uBit.systemTime() - time_val;
AnnaBridge 0:c0ff9a7daaac 173 buttonPress = VOWEL;
AnnaBridge 0:c0ff9a7daaac 174 check_press(delay);
AnnaBridge 0:c0ff9a7daaac 175 }
AnnaBridge 0:c0ff9a7daaac 176 }
AnnaBridge 0:c0ff9a7daaac 177
AnnaBridge 0:c0ff9a7daaac 178 void onButtonB(MicroBitEvent e)
AnnaBridge 0:c0ff9a7daaac 179 {
AnnaBridge 0:c0ff9a7daaac 180 if (e.value == MICROBIT_BUTTON_EVT_CLICK)
AnnaBridge 0:c0ff9a7daaac 181 {
AnnaBridge 0:c0ff9a7daaac 182 unsigned long delay = uBit.systemTime() - time_val;
AnnaBridge 0:c0ff9a7daaac 183 buttonPress = CONSONANT;
AnnaBridge 0:c0ff9a7daaac 184 check_press(delay);
AnnaBridge 0:c0ff9a7daaac 185 }
AnnaBridge 0:c0ff9a7daaac 186
AnnaBridge 0:c0ff9a7daaac 187 }
AnnaBridge 0:c0ff9a7daaac 188
AnnaBridge 0:c0ff9a7daaac 189
AnnaBridge 0:c0ff9a7daaac 190 int main()
AnnaBridge 0:c0ff9a7daaac 191 {
AnnaBridge 0:c0ff9a7daaac 192
AnnaBridge 0:c0ff9a7daaac 193 // Initialise the micro:bit runtime.
AnnaBridge 0:c0ff9a7daaac 194 uBit.init();
AnnaBridge 0:c0ff9a7daaac 195
AnnaBridge 0:c0ff9a7daaac 196 // Set up button event handlers
AnnaBridge 0:c0ff9a7daaac 197 uBit.messageBus.listen(MICROBIT_ID_BUTTON_B, MICROBIT_EVT_ANY, onButtonB);
AnnaBridge 0:c0ff9a7daaac 198 uBit.messageBus.listen(MICROBIT_ID_BUTTON_A, MICROBIT_EVT_ANY, onButtonA);
AnnaBridge 0:c0ff9a7daaac 199
AnnaBridge 0:c0ff9a7daaac 200 start();
AnnaBridge 0:c0ff9a7daaac 201 while(1)
AnnaBridge 0:c0ff9a7daaac 202 {
AnnaBridge 0:c0ff9a7daaac 203 uBit.sleep(100);
AnnaBridge 0:c0ff9a7daaac 204 }
AnnaBridge 0:c0ff9a7daaac 205
AnnaBridge 0:c0ff9a7daaac 206 // If main exits, there may still be other fibers running or registered event handlers etc.
AnnaBridge 0:c0ff9a7daaac 207 // Simply release this fiber, which will mean we enter the scheduler. Worse case, we then
AnnaBridge 0:c0ff9a7daaac 208 // sit in the idle task forever, in a power efficient sleep.
AnnaBridge 0:c0ff9a7daaac 209 release_fiber();
AnnaBridge 0:c0ff9a7daaac 210 }