Konlatee Sittichaivijit / Mbed 2 deprecated PacManII

My take on the classic Pac man game. Using mbed LPC 1768 and Nokia 5110 LCD Analog joystick used to control direction

Dependencies:   N5110 PowerControl mbed

main.cpp@0:1c3f3fe862f2, 2015-04-20 (annotated)

Committer:
el13ks
Date:
Mon Apr 20 15:30:27 2015 +0000
Revision:
0:1c3f3fe862f2
Child:
1:98cc4f4a20dc
Initial Commit, Joystick working, boundaries set

Who changed what in which revision?

UserRevisionLine numberNew contents of line
el13ks 0:1c3f3fe862f2 1 #include "mbed.h"
el13ks 0:1c3f3fe862f2 2 #include "N5110.h"
el13ks 0:1c3f3fe862f2 3 #define DIRECTION_TOLERANCE 0.05
el13ks 0:1c3f3fe862f2 4
el13ks 0:1c3f3fe862f2 5 BusOut LEDS(LED4,LED3,LED2,LED1);
el13ks 0:1c3f3fe862f2 6 BusOut myleds(p24,p23,p22); //External LEDS
el13ks 0:1c3f3fe862f2 7 InterruptIn StartButton(p18);//Start button
el13ks 0:1c3f3fe862f2 8 N5110 lcd(p7,p8,p9,p10,p11,p13,p26); //PWR, SCE, RST, DC, MOSI, SCLK, LED
el13ks 0:1c3f3fe862f2 9 AnalogIn Bright(p20);//Pot to adjust brightness
el13ks 0:1c3f3fe862f2 10 Ticker timer; //Create ticker object
el13ks 0:1c3f3fe862f2 11 DigitalIn button(p17);// Joystick Button
el13ks 0:1c3f3fe862f2 12 AnalogIn xPot(p15);// Joystick x-direction
el13ks 0:1c3f3fe862f2 13 AnalogIn yPot(p16);// Joystick y-direction
el13ks 0:1c3f3fe862f2 14 int i=42;
el13ks 0:1c3f3fe862f2 15 int j = 24;
el13ks 0:1c3f3fe862f2 16 int printFlag = 0;
el13ks 0:1c3f3fe862f2 17 Ticker pollJoystick; // timer to regularly read the joystick
el13ks 0:1c3f3fe862f2 18 enum DirectionName { // create enumerated type (0,1,2,3 etc. for direction)
el13ks 0:1c3f3fe862f2 19 UP, // could be extended for diagonals etc.
el13ks 0:1c3f3fe862f2 20 DOWN,
el13ks 0:1c3f3fe862f2 21 LEFT,
el13ks 0:1c3f3fe862f2 22 RIGHT,
el13ks 0:1c3f3fe862f2 23 CENTRE,
el13ks 0:1c3f3fe862f2 24 UNKNOWN
el13ks 0:1c3f3fe862f2 25 };
el13ks 0:1c3f3fe862f2 26
el13ks 0:1c3f3fe862f2 27 typedef struct JoyStick Joystick; // struct for Joystick
el13ks 0:1c3f3fe862f2 28 struct JoyStick {
el13ks 0:1c3f3fe862f2 29 float x; // current x value
el13ks 0:1c3f3fe862f2 30 float x0; // 'centred' x value
el13ks 0:1c3f3fe862f2 31 float y; // current y value
el13ks 0:1c3f3fe862f2 32 float y0; // 'centred' y value
el13ks 0:1c3f3fe862f2 33 int button; // button state (assume pull-down used, so 1 = pressed, 0 = unpressed)
el13ks 0:1c3f3fe862f2 34 DirectionName direction; // current direction
el13ks 0:1c3f3fe862f2 35 };
el13ks 0:1c3f3fe862f2 36
el13ks 0:1c3f3fe862f2 37 Joystick joystick; // create struct variable
el13ks 0:1c3f3fe862f2 38
el13ks 0:1c3f3fe862f2 39
el13ks 0:1c3f3fe862f2 40 void calibrateJoystick() // read default positions of the joystick to calibrate later readings
el13ks 0:1c3f3fe862f2 41 {
el13ks 0:1c3f3fe862f2 42 button.mode(PullDown);
el13ks 0:1c3f3fe862f2 43 // must not move during calibration
el13ks 0:1c3f3fe862f2 44 joystick.x0 = xPot; // initial positions in the range 0.0 to 1.0 (0.5 if centred exactly)
el13ks 0:1c3f3fe862f2 45 joystick.y0 = yPot;
el13ks 0:1c3f3fe862f2 46 }
el13ks 0:1c3f3fe862f2 47
el13ks 0:1c3f3fe862f2 48 void updateJoystick()
el13ks 0:1c3f3fe862f2 49 {
el13ks 0:1c3f3fe862f2 50
el13ks 0:1c3f3fe862f2 51 joystick.x = xPot - joystick.x0; // read current joystick values relative to calibrated values (in range -0.5 to 0.5, 0.0 is centred)
el13ks 0:1c3f3fe862f2 52 joystick.y = yPot - joystick.y0;
el13ks 0:1c3f3fe862f2 53 joystick.button = button; // read button state
el13ks 0:1c3f3fe862f2 54
el13ks 0:1c3f3fe862f2 55 // calculate direction depending on x,y values
el13ks 0:1c3f3fe862f2 56 // tolerance allows a little lee-way in case joystick not exactly in the stated direction
el13ks 0:1c3f3fe862f2 57 if ( fabs(joystick.y) < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
el13ks 0:1c3f3fe862f2 58 joystick.direction = CENTRE;
el13ks 0:1c3f3fe862f2 59 } else if ( joystick.y > DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
el13ks 0:1c3f3fe862f2 60 joystick.direction = UP;
el13ks 0:1c3f3fe862f2 61 } else if ( joystick.y < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
el13ks 0:1c3f3fe862f2 62 joystick.direction = DOWN;
el13ks 0:1c3f3fe862f2 63 } else if ( joystick.x > DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
el13ks 0:1c3f3fe862f2 64 joystick.direction = RIGHT;
el13ks 0:1c3f3fe862f2 65 } else if ( joystick.x < DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
el13ks 0:1c3f3fe862f2 66 joystick.direction = LEFT;
el13ks 0:1c3f3fe862f2 67 } else {
el13ks 0:1c3f3fe862f2 68 joystick.direction = UNKNOWN;
el13ks 0:1c3f3fe862f2 69 }
el13ks 0:1c3f3fe862f2 70
el13ks 0:1c3f3fe862f2 71
el13ks 0:1c3f3fe862f2 72 printFlag = 1; // set flag for printing
el13ks 0:1c3f3fe862f2 73 }
el13ks 0:1c3f3fe862f2 74
el13ks 0:1c3f3fe862f2 75 void drawMap1()// Furthest Left Map
el13ks 0:1c3f3fe862f2 76 {
el13ks 0:1c3f3fe862f2 77
el13ks 0:1c3f3fe862f2 78 lcd.drawRect(0,0,1,48,1); //x-coordinate of origin (top-left),y-coordinate of origin (top-left),width , height ,0 transparent (w/outline), 1 filled black, 2 filled white (wo/outline)
el13ks 0:1c3f3fe862f2 79 lcd.drawRect(0,0,84,1,1);
el13ks 0:1c3f3fe862f2 80 lcd.drawRect(0,46,84,1,1);
el13ks 0:1c3f3fe862f2 81 }
el13ks 0:1c3f3fe862f2 82
el13ks 0:1c3f3fe862f2 83 void drawMap2()// Central Map
el13ks 0:1c3f3fe862f2 84 {
el13ks 0:1c3f3fe862f2 85 lcd.drawRect(0,0,84,1,1);
el13ks 0:1c3f3fe862f2 86 lcd.drawRect(0,46,84,1,1);
el13ks 0:1c3f3fe862f2 87 }
el13ks 0:1c3f3fe862f2 88
el13ks 0:1c3f3fe862f2 89 void drawMap3()// Furthest Right Map
el13ks 0:1c3f3fe862f2 90 {
el13ks 0:1c3f3fe862f2 91
el13ks 0:1c3f3fe862f2 92 lcd.drawRect(82,0,1,48,1); //x-coordinate of origin (top-left),y-coordinate of origin (top-left),width , height ,0 transparent (w/outline), 1 filled black, 2 filled white (wo/outline)
el13ks 0:1c3f3fe862f2 93 lcd.drawRect(0,0,84,1,1);
el13ks 0:1c3f3fe862f2 94 lcd.drawRect(0,46,84,1,1);
el13ks 0:1c3f3fe862f2 95 }
el13ks 0:1c3f3fe862f2 96
el13ks 0:1c3f3fe862f2 97 int main()
el13ks 0:1c3f3fe862f2 98 {
el13ks 0:1c3f3fe862f2 99 lcd.init();
el13ks 0:1c3f3fe862f2 100
el13ks 0:1c3f3fe862f2 101
el13ks 0:1c3f3fe862f2 102 calibrateJoystick(); // get centred values of joystick
el13ks 0:1c3f3fe862f2 103 pollJoystick.attach(&updateJoystick,1.0/20.0); // read joystick 10 times per second
el13ks 0:1c3f3fe862f2 104
el13ks 0:1c3f3fe862f2 105 while(1) {
el13ks 0:1c3f3fe862f2 106 lcd.clear();
el13ks 0:1c3f3fe862f2 107 drawMap2(); // Furthest Left
el13ks 0:1c3f3fe862f2 108 lcd.drawCircle(i,j,2,1); //x-coordinate of origin (top-left),y-coordinate of origin (top-left),width , height ,0 transparent (w/outline), 1 filled black, 2 filled white (wo/outline)
el13ks 0:1c3f3fe862f2 109
el13ks 0:1c3f3fe862f2 110
el13ks 0:1c3f3fe862f2 111 // check joystick direction
el13ks 0:1c3f3fe862f2 112 if (joystick.direction == UP) {
el13ks 0:1c3f3fe862f2 113 j--;
el13ks 0:1c3f3fe862f2 114 }
el13ks 0:1c3f3fe862f2 115 if (joystick.direction == DOWN) {
el13ks 0:1c3f3fe862f2 116 j++;
el13ks 0:1c3f3fe862f2 117 }
el13ks 0:1c3f3fe862f2 118 if (joystick.direction == LEFT) {
el13ks 0:1c3f3fe862f2 119 i--;
el13ks 0:1c3f3fe862f2 120 }
el13ks 0:1c3f3fe862f2 121 if (joystick.direction == RIGHT) {
el13ks 0:1c3f3fe862f2 122 i++;
el13ks 0:1c3f3fe862f2 123 }
el13ks 0:1c3f3fe862f2 124 if (i<4) {
el13ks 0:1c3f3fe862f2 125 i=4;
el13ks 0:1c3f3fe862f2 126 }
el13ks 0:1c3f3fe862f2 127 if (j<4) {
el13ks 0:1c3f3fe862f2 128 j=4;
el13ks 0:1c3f3fe862f2 129 }
el13ks 0:1c3f3fe862f2 130 if (j>43) {
el13ks 0:1c3f3fe862f2 131 j=43;
el13ks 0:1c3f3fe862f2 132 }
el13ks 0:1c3f3fe862f2 133 }
el13ks 0:1c3f3fe862f2 134 }
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