ELEC2645 (2015/16)
Snake Game
Fork of
ProjectSnake
by 
William Smith
Diff: main.cpp
- Revision:
- 0:4b8288518876
- Child:
- 1:44cc07feab7e
diff -r 000000000000 -r 4b8288518876 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed May 04 17:31:50 2016 +0000
@@ -0,0 +1,805 @@
+#include "mbed.h"
+#include "N5110.h"
+#define DIRECTION_TOLERANCE 0.05// change this to alter tolerance of joystick direction
+
+DigitalIn button(PTB11);// connections for joystick
+AnalogIn xPot(PTB2);
+AnalogIn yPot(PTB3);
+Ticker pollJoystick;// timer to regularly read the joystick
+// Serial for debug
+Serial serial(USBTX,USBRX);// Serial for debug
+// create enumerated type (0,1,2,3 etc. for direction)
+// could be extended for diagonals etc.
+enum DirectionName {
+ UP,
+ DOWN,
+ LEFT,
+ RIGHT,
+ CENTRE,
+ UNKNOWN
+};
+typedef struct JoyStick Joystick;// struct for Joystick
+struct JoyStick {
+ float x; // current x value
+ float x0; // 'centred' x value
+ float y; // current y value
+ float y0; // 'centred' y value
+ int button; // button state (assume pull-down used, so 1 = pressed, 0 = unpressed)
+ DirectionName direction; // current direction
+};
+Joystick joystick;// create struct variable
+int printFlag = 0;
+
+// VCC, SCE, RST, D/C, MOSI, SCLK, LED
+N5110 lcd( PTE26, PTA0, PTC4, PTD0, PTD2, PTD1, PTC3);
+DigitalIn buttonA(PTB18);
+int ni = 84;
+int x = 0;
+int x1 = 0;
+int x2 = 0;
+int x3 = 0;
+int x4 = 0;
+int x5 = 0;
+int x6 = 0;
+int x7 = 0;
+int x8 = 0;
+int x9 = 0;
+int x10 = 0;
+int x11 = 0;
+int x12 = 0;
+int x13 = 0;
+int x14 = 0;
+int x15 = 0;
+int x16 = 0;
+int x17 = 0;
+int x18 = 0;
+int x19 = 0;
+int x20 = 0;
+int x21 = 0;
+int x22 = 0;
+int x23 = 0;
+int x24 = 0;
+int y = 0;
+int y1 = 1;
+int y2 = 2;
+int y3 = 3;
+int y4 = 4;
+int y5 = 5;
+int y6 = 6;
+int y7 = 7;
+int y8 = 8;
+int y9 = 9;
+int y10 = 10;
+int y11 = 11;
+int y12 = 12;
+int y13 = 13;
+int y14 = 14;
+int y15 = 15;
+int y16 = 16;
+int y17 = 17;
+int y18 = 18;
+int y19 = 19;
+int y20 = 20;
+int y21 = 21;
+int y22 = 22;
+int y23 = 23;
+int y24 = 24;
+int change = 1;
+int n[84][48];
+int array[48][84];
+int nj = 48;
+int cells[84][48];
+int Score = 0;
+int randX;
+int randY;
+char str[64];
+int pause=0;
+
+void Menu(); //Start screen
+void Welcomescreen(); //Prints Welcome to snake on screen
+void clearCells(); //Clears Screen
+void checkerBoard(); //produces checkers before game begins
+void DrawArray(); //Sets the pixel depending on whether 0 or higher than 1
+void ClearArray();//Checks over each individual pixel and if its 0 it will clear
+void GenerateFood();//Generates food at random places
+void MakeSnake(); //sets the pixels for the snake
+void SnakeGame(); // Game Rules
+void MoveSnake(); //moving the snake using the joy stick
+void calibrateJoystick();
+void updateJoystick();
+void SnakeGrowing();
+void GameOver();//Game ends
+void drawLine();
+void calibrateJoystick();
+void updateJoystick();
+
+int main()
+{
+ buttonA.mode(PullDown);
+ calibrateJoystick(); // get centred values of joystick
+ pollJoystick.attach(&updateJoystick,1.0/10.0); // read joystick 10 times per second
+ calibrateJoystick();
+ updateJoystick();
+ lcd.init();
+ Welcomescreen();
+ lcd.clear();
+ GenerateFood();
+ DrawArray();
+ Menu();
+ while(1) {
+
+ MakeSnake();
+ ClearArray();
+ DrawArray();
+ }
+}
+//menu screen
+void Menu()
+{
+ // first need to initialise display
+
+ lcd.clear();
+ lcd.printString("Press Button",6,1);
+ lcd.printString("To",35,3);
+ lcd.printString("START",27,5);
+ wait(0.3);
+
+ while(1) {
+ if (buttonA==1) {
+ lcd.clear();
+ checkerBoard();
+ wait(0.5);
+ lcd.clear();
+
+
+ while(1) {
+
+ wait(0.005);
+ SnakeGame();
+ if (buttonA==1) {
+ pause=0;
+ Menu();
+ }
+
+ if (button==1) {
+ pause=0;
+ lcd.clear();
+ sprintf(str,"%d",Score);
+ lcd.printString(str,37,2);
+ wait(1);
+ }
+ }
+ }
+ }
+}
+
+void Welcomescreen() // Display welcome screen
+{
+ lcd.printString("Welcome",20,1); // display Welcome
+ wait(0.1);
+ lcd.printString("To",35,3); // display To
+ wait(0.1);
+ lcd.printString("SNAKE",27,5); // display Snake
+ wait(1);
+}
+
+void checkerBoard()
+{
+//
+ for (int i = 0; i < ni ; i+=2) {
+ for (int j = 0; j < nj ; j+=2) {
+ lcd.setPixel(i,j);
+ }
+ }
+ lcd.refresh();
+}
+
+void DrawArray()
+{
+ for(int x=0; x<84; x++) {
+ for (int y=0; y<48; y++) {
+ if(array[y][x]>=1) {
+ lcd.setPixel(x,y);
+ } else {
+ lcd.clearPixel(x,y);
+ }
+ }
+ }
+ lcd.refresh();
+}
+
+void ClearArray()
+{
+ for(int x=0; x<84; x++) {
+ for(int y=0; y<48; y++) {
+ if (array[y][x]==0) {
+ lcd.clearPixel(x,y);
+ } else {
+ lcd.setPixel(x,y);
+ }
+ }
+ }
+ lcd.refresh();
+}
+
+void calibrateJoystick()// read default positions of the joystick to calibrate later readings
+{
+ button.mode(PullDown); // must not move during calibration
+ joystick.x0 = xPot; // initial positions in the range 0.0 to 1.0 (0.5 if centred exactly)
+ joystick.y0 = yPot;
+}
+void updateJoystick()
+{
+ joystick.x = xPot - joystick.x0;// read current joystick values relative to calibrated values (in range -0.5 to 0.5, 0.0 is centred)
+ joystick.y = yPot - joystick.y0;// read button state
+ joystick.button = button; // calculate direction depending on x,y values
+ if ( fabs(joystick.y) < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) { // tolerance allows a little lee-way in case joystick not exactly in the stated direction
+ joystick.direction = CENTRE;
+ } else if ( joystick.y > DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
+ joystick.direction = LEFT;
+ } else if ( joystick.y < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
+ joystick.direction = RIGHT;
+ } else if ( joystick.x > DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
+ joystick.direction = DOWN;
+ } else if ( joystick.x < DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
+ joystick.direction = UP;
+ } else {
+ joystick.direction = UNKNOWN;
+ }
+ printFlag = 1;// set flag for printing
+}
+
+void GenerateFood()
+{
+ randX = rand() %83; //make random number between 0 - 84
+ randY = rand() %47; //make random number between 0 - 48
+ while(array[randY][randX]) {
+ randX= rand() %83;
+ randY= rand() %47;
+ }
+ array[randY][randX]= 5;
+}
+void MakeSnake()
+{
+ array[y+36][x+5]= 1;
+ array[y1+36][x1+5]= 1;
+ array[y2+36][x2+5]= 1;
+ array[y3+36][x3+5]= 1;
+ array[y4+36][x4+5]= 1;
+ array[y5+36][x5+5]= 0;
+ array[y6+36][x6+5]= 0;
+ array[y7+36][x7+5]= 0;
+ array[y8+36][x7+5]= 0;
+ array[y9+36][x9+5]= 0;
+ array[y10+36][x10+5]= 0;
+ array[y11+36][x11+5]= 0;
+ array[y12+36][x12+5]= 0;
+ array[y13+36][x13+5]= 0;
+ array[y14+36][x14+5]= 0;
+ array[y15+36][x15+5]= 0;
+ array[y16+36][x16+5]= 0;
+ array[y17+36][x17+5]= 0;
+ array[y18+36][x18+5]= 0;
+ array[y19+36][x19+5]= 0;
+ array[y20+36][x20+5]= 0;
+ array[y21+36][x21+5]= 0;
+ array[y22+36][x22+5]= 0;
+ array[y23+36][x23+5]= 0;
+ array[y24+36][x24+5]= 0;
+}
+
+void SnakeGame()
+{
+ MakeSnake();
+ ClearArray();
+ DrawArray();
+ SnakeGrowing();
+ if(pause==0) {
+ MoveSnake();
+ }
+ if(y+36==randY && x+5==randX) {
+ GenerateFood();
+
+ Score= Score+10;
+ }
+
+}
+void MoveSnake()
+{
+ array[y+36][x+5]= 0;
+
+ array[y1+36][x1+5]= 0;
+
+ array[y2+36][x2+5]= 0;
+
+ array[y3+36][x3+5]= 0;
+
+ array[y4+36][x4+5]= 0;
+
+ array[y5+36][x5+5]= 0;
+
+ array[y6+36][x6+5]= 0;
+
+ array[y7+36][x7+5]= 0;
+
+ array[y8+36][x8+5]= 0;
+
+ array[y9+36][x9+5]= 0;
+
+ array[y10+36][x10+5]= 0;
+
+ array[y11+36][x11+5]= 0;
+
+ array[y12+36][x12+5]= 0;
+
+ array[y13+36][x13+5]= 0;
+
+ array[y14+36][x14+5]= 0;
+
+ array[y15+36][x15+5]= 0;
+
+ array[y16+36][x16+5]= 0;
+
+ array[y17+36][x17+5]= 0;
+
+ array[y18+36][x18+5]= 0;
+
+ array[y19+36][x19+5]= 0;
+
+ array[y20+36][x20+5]= 0;
+
+ array[y21+36][x21+5]= 0;
+
+ array[y22+36][x22+5]= 0;
+
+ array[y23+36][x23+5]= 0;
+
+ array[y24+36][x24+5]= 0;
+
+ x24=x23;
+ y24=y23;
+ x23=x22;
+ y23=y22;
+ x22=x21;
+ y22=y21;
+ x21=x20;
+ y21=y20;
+ x20=x19;
+ y20=y19;
+ x19=x18;
+ y19=y18;
+ x18=x17;
+ y18=y17;
+ x17=x16;
+ y17=y16;
+ x16=x15;
+ y16=y15;
+ x15=x14;
+ y15=y14;
+ x14=x13;
+ y14=y13;
+ x13=x12;
+ y13=y12;
+ x12=x11;
+ y12=y11;
+ x11=x10;
+ y11=y10;
+ x10=x9;
+ y10=y9;
+ x9=x8;
+ y9=y8;
+ x8=x7;
+ y8=y7;
+ x7=x6;
+ y7=y6;
+ x6=x5;
+ y6=y5;
+ x5=x4;
+ y5=y4;
+ x4=x3;
+ y4=y3;
+ x3=x2;
+ y3=y2;
+ x2=x1;
+ y2=y1;
+ x1 = x;
+ y1 = y;
+ if (joystick.direction == CENTRE) {
+ //lcd.printString("CENTRE",20,1); // display welcome
+ wait(0.05);
+ } else if (joystick.direction == UP) {
+ //lcd.printString("UP",20,1); // display welcome
+ wait(0.05);
+ change = 1;
+ } else if (joystick.direction == DOWN) {
+ //lcd.printString("DOWN",20,1); // display welcome
+ wait(0.05);
+ change = 2;
+ } else if (joystick.direction == LEFT) {
+ //lcd.printString("LEFT",20,1); // display welcome
+ wait(0.05);
+ change = 3;
+ } else if (joystick.direction == RIGHT) {
+ //lcd.printString("RIGHT",20,1); // display welcome
+ wait(0.05);
+ change = 4;
+ }
+ if (change == 1) {
+ y--;
+ } else if (change == 2) {
+ y++;
+ } else if (change == 3) {
+ x--;
+ } else if (change == 4) {
+ x++;
+ }
+
+}
+void SnakeGrowing()
+{
+
+
+ if(Score>=10) {
+ array[y+36][x+5]= 1;
+
+ array[y1+36][x1+5]= 1;
+
+ array[y2+36][x2+5]= 1;
+
+ array[y3+36][x3+5]= 1;
+
+ array[y4+36][x4+5]= 1;
+
+ array[y5+36][x5+5]= 1;
+
+ array[y6+36][x6+5]= 1;
+
+ }
+
+
+ if(Score>=20) {
+ array[y+36][x+5]= 1;
+
+ array[y1+36][x1+5]= 1;
+
+ array[y2+36][x2+5]= 1;
+
+ array[y3+36][x3+5]= 1;
+
+ array[y4+36][x4+5]= 1;
+
+ array[y5+36][x5+5]= 1;
+
+ array[y6+36][x6+5]= 1;
+
+ array[y7+36][x7+5]= 1;
+
+ array[y8+36][x8+5]= 1;
+ }
+ if(Score>=30) {
+ array[y+36][x+5]= 1;
+
+ array[y1+36][x1+5]= 1;
+
+ array[y2+36][x2+5]= 1;
+
+ array[y3+36][x3+5]= 1;
+
+ array[y4+36][x4+5]= 1;
+
+ array[y5+36][x5+5]= 1;
+
+ array[y6+36][x6+5]= 1;
+
+ array[y7+36][x7+5]= 1;
+
+ array[y8+36][x8+5]= 1;
+
+ array[y9+36][x9+5]= 1;
+
+ array[y10+36][x10+5]= 1;
+
+ }
+ if(Score>=40) {
+ array[y+36][x+5]= 1;
+
+ array[y1+36][x1+5]= 1;
+
+ array[y2+36][x2+5]= 1;
+
+ array[y3+36][x3+5]= 1;
+
+ array[y4+36][x4+5]= 1;
+
+ array[y5+36][x5+5]= 1;
+
+ array[y6+36][x6+5]= 1;
+
+ array[y7+36][x7+5]= 1;
+
+ array[y8+36][x8+5]= 1;
+
+ array[y9+36][x9+5]= 1;
+
+ array[y10+36][x10+5]= 1;
+
+ array[y11+36][x11+5]= 1;
+
+ array[y12+36][x12+5]= 1;
+
+ }
+ if(Score>=50) {
+ array[y+36][x+5]= 1;
+
+ array[y1+36][x1+5]= 1;
+
+ array[y2+36][x2+5]= 1;
+
+ array[y3+36][x3+5]= 1;
+
+ array[y4+36][x4+5]= 1;
+
+ array[y5+36][x5+5]= 1;
+
+ array[y6+36][x6+5]= 1;
+
+ array[y7+36][x7+5]= 1;
+
+ array[y8+36][x8+5]= 1;
+
+ array[y9+36][x9+5]= 1;
+
+ array[y10+36][x10+5]= 1;
+
+ array[y11+36][x11+5]= 1;
+
+ array[y12+36][x12+5]= 1;
+
+ array[y13+36][x13+5]= 1;
+
+ array[y14+36][x14+5]= 1;
+
+ }
+ if(Score>=60) {
+ array[y+36][x+5]= 1;
+
+ array[y1+36][x1+5]= 1;
+
+ array[y2+36][x2+5]= 1;
+
+ array[y3+36][x3+5]= 1;
+
+ array[y4+36][x4+5]= 1;
+
+ array[y5+36][x5+5]= 1;
+
+ array[y6+36][x6+5]= 1;
+
+ array[y7+36][x7+5]= 1;
+
+ array[y8+36][x8+5]= 1;
+
+ array[y9+36][x9+5]= 1;
+
+ array[y10+36][x10+5]= 1;
+
+ array[y11+36][x11+5]= 1;
+
+ array[y12+36][x12+5]= 1;
+
+ array[y13+36][x13+5]= 1;
+
+ array[y14+36][x14+5]= 1;
+
+ array[y15+36][x15+5]= 1;
+
+ array[y16+36][x16+5]= 1;
+
+ }
+ if(Score>=70) {
+ array[y+36][x+5]= 1;
+
+ array[y1+36][x1+5]= 1;
+
+ array[y2+36][x2+5]= 1;
+
+ array[y3+36][x3+5]= 1;
+
+ array[y4+36][x4+5]= 1;
+
+ array[y5+36][x5+5]= 1;
+
+ array[y6+36][x6+5]= 1;
+
+ array[y7+36][x7+5]= 1;
+
+ array[y8+36][x8+5]= 1;
+
+ array[y9+36][x9+5]= 1;
+
+ array[y10+36][x10+5]= 1;
+
+ array[y11+36][x11+5]= 1;
+
+ array[y12+36][x12+5]= 1;
+
+ array[y13+36][x13+5]= 1;
+
+ array[y14+36][x14+5]= 1;
+
+ array[y15+36][x15+5]= 1;
+
+ array[y16+36][x16+5]= 1;
+
+ array[y17+36][x17+5]= 1;
+
+ array[y18+36][x18+5]= 1;
+
+ }
+ if(Score>=80) {
+ array[y+36][x+5]= 1;
+
+ array[y1+36][x1+5]= 1;
+
+ array[y2+36][x2+5]= 1;
+
+ array[y3+36][x3+5]= 1;
+
+ array[y4+36][x4+5]= 1;
+
+ array[y5+36][x5+5]= 1;
+
+ array[y6+36][x6+5]= 1;
+
+ array[y7+36][x7+5]= 1;
+
+ array[y8+36][x8+5]= 1;
+
+ array[y9+36][x9+5]= 1;
+
+ array[y10+36][x10+5]= 1;
+
+ array[y11+36][x11+5]= 1;
+
+ array[y12+36][x12+5]= 1;
+
+ array[y13+36][x13+5]= 1;
+
+ array[y14+36][x14+5]= 1;
+
+ array[y15+36][x15+5]= 1;
+
+ array[y16+36][x16+5]= 1;
+
+ array[y17+36][x17+5]= 1;
+
+ array[y18+36][x18+5]= 1;
+
+ array[y19+36][x19+5]= 1;
+
+ array[y20+36][x20+5]= 1;
+
+ }
+ if(Score>=90) {
+ array[y+36][x+5]= 1;
+
+ array[y1+36][x1+5]= 1;
+
+ array[y2+36][x2+5]= 1;
+
+ array[y3+36][x3+5]= 1;
+
+ array[y4+36][x4+5]= 1;
+
+ array[y5+36][x5+5]= 1;
+
+ array[y6+36][x6+5]= 1;
+
+ array[y7+36][x7+5]= 1;
+
+ array[y8+36][x8+5]= 1;
+
+ array[y9+36][x9+5]= 1;
+
+ array[y10+36][x10+5]= 1;
+
+ array[y11+36][x11+5]= 1;
+
+ array[y12+36][x12+5]= 1;
+
+ array[y13+36][x13+5]= 1;
+
+ array[y14+36][x14+5]= 1;
+
+ array[y15+36][x15+5]= 1;
+
+ array[y16+36][x16+5]= 1;
+
+ array[y17+36][x17+5]= 1;
+
+ array[y18+36][x18+5]= 1;
+
+ array[y19+36][x19+5]= 1;
+
+ array[y20+36][x20+5]= 1;
+
+ array[y21+36][x21+5]= 1;
+
+ array[y22+36][x22+5]= 1;
+
+ }
+ if(Score>=100) {
+ array[y+36][x+5]= 1;
+
+ array[y1+36][x1+5]= 1;
+
+ array[y2+36][x2+5]= 1;
+
+ array[y3+36][x3+5]= 1;
+
+ array[y4+36][x4+5]= 1;
+
+ array[y5+36][x5+5]= 1;
+
+ array[y6+36][x6+5]= 1;
+
+ array[y7+36][x7+5]= 1;
+
+ array[y8+36][x8+5]= 1;
+
+ array[y9+36][x9+5]= 1;
+
+ array[y10+36][x10+5]= 1;
+
+ array[y11+36][x11+5]= 1;
+
+ array[y12+36][x12+5]= 1;
+
+ array[y13+36][x13+5]= 1;
+
+ array[y14+36][x14+5]= 1;
+
+ array[y15+36][x15+5]= 1;
+
+ array[y16+36][x16+5]= 1;
+
+ array[y17+36][x17+5]= 1;
+
+ array[y18+36][x18+5]= 1;
+
+ array[y19+36][x19+5]= 1;
+
+ array[y20+36][x20+5]= 1;
+
+ array[y21+36][x21+5]= 1;
+
+ array[y22+36][x22+5]= 1;
+
+ array[y23+36][x23+5]= 1;
+
+ array[y24+36][x24+5]= 1;
+
+ }
+ DrawArray();
+
+
+
+}
+
+
+/*void GameOver()
+{
+
+ if (button==1) {
+
+ lcd.clear();
+
+ lcd.printString("Welcome",20,1); // display welcome
+ //wait(0.1);
+ lcd.printString("To",35,3); // display To the game
+ //wait(0.1);
+ lcd.printString("SNAKE",27,5); // display of life
+ //wait(1);
+ }
+}
+*/
\ No newline at end of file