Diff: main.cpp

Revision:

2:5446154a4028

Parent:

1:6fc14cd8ccf1

Child:

3:b78d65300f24

diff -r 6fc14cd8ccf1 -r 5446154a4028 main.cpp
--- a/main.cpp	Wed Mar 11 16:03:08 2015 +0000
+++ b/main.cpp	Sat May 09 09:38:26 2015 +0000
@@ -6,20 +6,891 @@
 */
 #include "main.h"
 
-int main() {
-    
-    /// flash LED in infinite loop
+int main(){
+    ///minimal amount of code in the main, see All() for more
+    All();
+}
+
+void All(){
+    calibrateJoystick(); ///get the centred values of the joystick
+    bright=5;
     while(1) {
-        myled = 1;
-        wait(0.2);
-        myled = 0;
-        wait(0.2);
+        if(screen)
+            lcd.inverseMode();
+        if(!screen)
+            lcd.normalMode();
+        lcd.refresh();
+        Initialise();
+        start();
+    }
+}
+
+///all of the variable, flags, tickers, and anything else that needs to set each time it's powered up
+void Initialise(){
+    lcd.init();
+    Power.attach(&powerDown,1.0);///increases the power counter every second
+    backlight.attach(&brightness,1.0/10.0);///updates the brightness 10 times a second
+    pollJoystick.attach(&updateJoystick,1.0/10.0);  /// read joystick 10 times per second
+    i=1;
+    j=24;
+    life=3;
+    winFlag=0;
+    startFlag=1;
+    buzzer.period(0.002);
+    c=1;
+}
+
+
+void powerDown(){///goes into deep power down if nothing happens for a minute
+    power++;
+    if(power==55){
+        red1=0;
+        red2=0.1*bright;
+        red3=0;
+        yel=0.1*bright;
+        buzzer=0.4;
+    }
+    if(power==56){
+        red1=0.1*bright;
+        red2=0;
+        red3=0.1*bright;
+        yel=0;
+        buzzer=0.9;
+    }
+    if(power==57){
+        red1=0;
+        red2=0.1*bright;
+        red3=0;
+        yel=0.1*bright;
+        buzzer=0.4;
+    }
+    if(power==58){
+        red1=0.1*bright;
+        red2=0;
+        red3=0.1*bright;
+        yel=0;
+        buzzer=0.9;
+    }
+    if(power==59){
+        red1=0;
+        red2=0.1*bright;
+        red3=0;
+        yel=0.1*bright;
+        buzzer=0.4;
+    }
+    if(power>60){
+        red1=0;
+        red2=0.1*bright;
+        red3=0;
+        yel=0.1*bright;
+        buzzer=0.9;
+        DeepPowerDown();
     }
 }
 
 
-int sum(int a, int b) {
+///the start screen, shows up at the begining and when the player runs out of lives
+///links to the options menu, the highscores, the level select, and the game
+void start(){
+    power=0;
+    clear();
+    lcd.refresh();
+    butt.rise(&menus);
+    push.rise(&menus);
+    startFlag=1;
+    while(c) {
+        lcd.clearPixel(i,j);
+        lcd.printString("Click",25,2);
+        lcd.refresh();
+    }
+    clear();
+    while(startFlag) {
+        lcd.clearPixel(i,j);
+        while(joystick.direction!=CENTRE) {
+            lcd.clearPixel(i,j);
+            ///do nothing, stay on current screen
+            lcd.printString("^ Options ^",10,0);
+            lcd.printString("< Score Inv. >",0,2);
+            lcd.printString("v Levels v",12,5);
+            lcd.refresh();
+        }
+        if(joystick.direction==CENTRE) {
+            lcd.clearPixel(i,j);
+            lcd.printString("^ Options ^",10,0);
+            lcd.printString("< Score Inv. >",0,2);
+            lcd.printString("v Levels v",12,5);
+            lcd.refresh();
+            ///for some reason if UP is used to change the flag then it goes straight to the maze
+        }
+        if(joystick.direction==UP) {
+            power=0;
+            lcd.clearPixel(i,j);
+            toggle();
+            Options();
+        }
+        if (joystick.direction==DOWN) {
+            power=0;
+            lcd.clearPixel(i,j);
+            toggle();
+            Levels();
+        }
+        if(joystick.direction==LEFT) {
+            power=0;
+            lcd.clearPixel(i,j);
+            toggle();
+            Score();
+        }
+        if(joystick.direction==RIGHT) {
+            power=0;
+            lcd.clearPixel(i,j);
+            ///go to the inverse function
+            screen=!screen;
+            if(screen)
+                lcd.inverseMode();
+            if(!screen)
+                lcd.normalMode();
+            lcd.refresh();
+        }
+    }
+    lcd.clearPixel(i,j);
+    clear();
+}
+void menus(){
+    power=0;
+    lcd.clearPixel(i,j);
+    clear();
+    timeout.attach_us(&toggle,10);
+}
+void toggle(){
+    power=0;
+    l=!l;
+    r=!r;
+    u=!u;
+    d=!d;
+    c=0;
+    b=!b;
+    startFlag=1;
+}
+void Options(){
+    power=0;
+    lcd.clearPixel(i,j);
+    clear();
+    while(u) {
+        lcd.clearPixel(i,j);
+        while(joystick.direction!=CENTRE) {
+            ///do nothing, just sit on current screen
+            lcd.clearPixel(i,j);
+            lcd.printString("~~~~~~~~~~~~~~",0,0);
+            lcd.printString("^ Brightness ^",0,1);
+            lcd.printString("< Reset",10,2);
+            lcd.printString("End >",30,3);
+            lcd.printString("v Back v",15,4);
+            lcd.printString("~~~~~~~~~~~~~~",0,5);
+            lcd.refresh();
+        }
+        lcd.clearPixel(i,j);
+        lcd.printString("~~~~~~~~~~~~~~",0,0);
+        lcd.printString("^ Brightness ^",0,1);
+        lcd.printString("< Reset",10,2);
+        lcd.printString("End >",30,3);
+        lcd.printString("v Back v",15,4);
+        lcd.printString("~~~~~~~~~~~~~~",0,5);
+        lcd.refresh();
+        if(joystick.direction==DOWN) {
+            power=0;
+            lcd.clearPixel(i,j);
+            ///escape back to the first menu
+            start();
+        }
+        if (joystick.direction==UP) {
+            power=0;
+            lcd.clearPixel(i,j);
+            ///go to the brightness function
+            clear();
+            while(b) {
+                lcd.clearPixel(i,j);
+                red1=0.1*bright;
+                red2=0.1*bright;
+                red3=0.1*bright;
+                yel=0.1*bright;
+                push.rise(&Dark);
+                butt.rise(&Light);
+                lcd.printString("click joy - up",0,1);
+                lcd.printString("or pink - down",0,3);
+                lcd.printString("v Back v",15,5);
+                lcd.refresh();
+                if(joystick.direction==DOWN) {
+                    Options();
+                }
+            }
+        }
+        if (joystick.direction==LEFT) {
+            power=0;
+            lcd.clearPixel(i,j);
+            toggle();
+            score1=0;
+            scoreWrite1();
+            score2=0;
+            scoreWrite2();
+            score3=0;
+            scoreWrite3();
+        }
+        if(joystick.direction==RIGHT) {
+            power=0;
+            lcd.clearPixel(i,j);
+            winFlag=1;
+            endGame();
+        }
+    }
+    lcd.clearPixel(i,j);
+    clear();
+}
+void Light(){
+    timeout.attach_us(&light,100);
+}
+void Dark(){
+    timeout.attach_us(&dark,100);
+}
+void light(){
+    bright++;
+    if(bright>10)
+        bright=10;
+}
+void dark(){
+    bright--;
+    if(bright<1)
+        bright=1;
+}
+void brightness(){
+    lcd.setBrightness(0.1*bright);
+}
+void Levels(){
+    power=0;
+    push.rise(&menus);
+    butt.rise(&menus);
+    clear();
+    while(d) {
+        lcd.clearPixel(i,j);
+        while(joystick.direction!=CENTRE) {
+            ///do nothing, stay on current screen
+            lcd.clearPixel(i,j);
+            lcd.printString("~~~~~~~~~~~~~~",0,0);
+            lcd.printString("Left = 1",10,2);
+            lcd.printString("Down = 2",10,3);
+            lcd.printString("Right = 3",10,4);
+            lcd.printString("^ Back ^",15,1);
+            lcd.printString("~~~~~~~~~~~~~~",0,5);
+            lcd.refresh();
+        }
+        lcd.clearPixel(i,j);
+        lcd.printString("~~~~~~~~~~~~~~",0,0);
+        lcd.printString("Left = 1",10,2);
+        lcd.printString("Down = 2",10,3);
+        lcd.printString("Right = 3",10,4);
+        lcd.printString("^ Back ^",15,1);
+        lcd.printString("~~~~~~~~~~~~~~",0,5);
+        lcd.refresh();
+        if(joystick.direction==UP) {
+            power=0;
+            lcd.clearPixel(i,j);
+            ///escape back to the first menu
+            toggle();
+            start();
+        }
+        if(joystick.direction==LEFT) {
+            power=0;
+            lcd.clearPixel(i,j);
+            ///go to the preview screen for level 1
+            clear();
+            while(joystick.direction==LEFT) {
+                lcd.clearPixel(i,j);
+                lcd.printString("Level 1",15,2);
+                lcd.refresh();
+                mazeFlag=1;
+            }
+            clear();
+            mainGame();
+        }
+        if(joystick.direction==DOWN) {
+            power=0;
+            lcd.clearPixel(i,j);
+            ///go to the preview screen for level 2
+            clear();
+            while(joystick.direction==DOWN) {
+                lcd.clearPixel(i,j);
+                lcd.printString("Level 2",15,2);
+                lcd.refresh();
+                mazeFlag=2;
+            }
+            clear();
+            mainGame();
+        }
+        if(joystick.direction==RIGHT) {
+            power=0;
+            lcd.clearPixel(i,j);
+            ///go to the preview screen for level 3
+            clear();
+            while(joystick.direction==RIGHT) {
+                power=0;
+                lcd.clearPixel(i,j);
+                lcd.printString("Level 3",15,2);
+                lcd.refresh();
+                mazeFlag=3;
+            }
+            clear();
+            mainGame();
+        }
+
+    }
+    lcd.clearPixel(i,j);
+    clear();
+}
+void Score(){
+    power=0;
+    lcd.clearPixel(i,j);
+    push.rise(&menus);
+    butt.rise(&menus);
+    clear();
+    while(l) {
+        lcd.clearPixel(i,j);
+        while(joystick.direction!=CENTRE) {
+            ///do nothing, stay on current screen
+            lcd.clearPixel(i,j);
+            lcd.printString("~~~~~~~~~~~~~~",0,0);
+            lcd.printString("High Score",10,1);
+            lcd.printString("> Back >",15,4);
+            lcd.printString("~~~~~~~~~~~~~~",0,5);
+            lcd.refresh();
+        }
+        lcd.clearPixel(i,j);
+        lcd.printString("~~~~~~~~~~~~~~",0,0);
+        lcd.printString("High Score",10,1);
+        lcd.printString("> Back >",15,4);
+        lcd.printString("~~~~~~~~~~~~~~",0,5);
+        lcd.refresh();
+        if(joystick.direction==RIGHT) {
+            power=0;
+            ///escape back to the first menu
+            start();
+        }
+        if(joystick.direction==UP) {
+            power=0;
+            lcd.clearPixel(i,j);
+            ///show the high score/fastest time for level 1
+            clear();
+            while(joystick.direction!=DOWN){
+                lcd.clearPixel(i,j);
+                lcd.printString("Level 1 best",7,1);
+                scoreRead1();
+                lcd.refresh();
+            }
+            clear();
+        }else if(joystick.direction==LEFT) {
+            power=0;
+            lcd.clearPixel(i,j);
+            ///show the high score/fastest time for level 2
+            clear();
+            while(joystick.direction!=RIGHT){
+                lcd.clearPixel(i,j);
+                lcd.printString("Level 2 best",7,1);
+                scoreRead2();
+                lcd.refresh();
+            }
+            clear();
+        }else if(joystick.direction==DOWN) {
+            power=0;
+            lcd.clearPixel(i,j);
+            ///show the high score/fastest time for level 3
+            clear();
+            while(joystick.direction!=UP){
+                lcd.clearPixel(i,j);
+                lcd.printString("Level 3 best",7,1);
+                scoreRead3();                
+                lcd.refresh();
+            }
+            clear();
+        }
+    }
+    lcd.clearPixel(i,j);
+    clear();
+}
+
+
+///writes the score for the first level to file
+void scoreWrite1(){
+    FILE *fp = fopen("/local/score1.txt","w");///opens the file score1.txt
+    ///if the file doesn't exist it creates it, if it exists it updates
+    fprintf(fp,"%i",score1);///prints the integer value for the score to file
+    fclose(fp);
+}
+void scoreRead1(){
+    int Score1;///tells it that the value to be read is an integer value
+    
+    FILE *fp1 = fopen("/local/score1.txt","r");///opens score1.txt
+    fscanf(fp1,"%i",&Score1);///searches the file for an integer followed by a string
+    fclose(fp1);
+    
+    char Points1[14];///bufer to store the points value
+    sprintf(Points1,"%i",Score1);///sends the score to the buffer
+    lcd.printString(Points1,30,3);///prints the score to the LCD
+}
+
+///writes the score for the second level to file
+void scoreWrite2(){
+    FILE *fp2 = fopen("/local/score2.txt","w");///opens the file score2.txt
+    ///if the file doesn't exist it creates it, if it exists it updates
+    fprintf(fp2,"%i",score2);///prints the integer value for the score to file
+    fclose(fp2);
+}
+void scoreRead2(){
+    int Score2;///tells it that the value to be read is an integer value
+    
+    FILE *fp3 = fopen("/local/score2.txt","r");///opens score2.txt
+    fscanf(fp3,"%i",&Score2);///searches the file for an integer followed by a string
+    fclose(fp3);
+    
+    char Points2[14];///bufer to store the points value
+    sprintf(Points2,"%i",Score2);///sends the score to the buffer
+    lcd.printString(Points2,30,3);///prints the score to the LCD
+}
+
+///writes the score for the third level to file
+void scoreWrite3(){
+    FILE *fp4 = fopen("/local/score3.txt","w");///opens the file score3.txt
+    ///if the file doesn't exist it creates it, if it exists it updates
+    fprintf(fp4,"%i",score3);///prints the integer value for the score to file
+    fclose(fp4);
+}
+void scoreRead3(){
+    int Score3;///tells it that the value to be read is an integer value
+    
+    FILE *fp5 = fopen("/local/score3.txt","r");///opens score3.txt
+    fscanf(fp5,"%i",&Score3);///searches the file for an integer followed by a string
+    fclose(fp5);
     
-    /// calculate the sum of the two arguments and return
-    return a + b;
+    char Points3[14];///bufer to store the points value
+    sprintf(Points3,"%i",Score3);///sends the score to the buffer
+    lcd.printString(Points3,30,3);///prints the score to the LCD
+}
+
+void pause(){
+    power=0;
+    lcd.clearPixel(i,j);
+    i=1;
+    j=24;
+    winFlag=0;
+    life=0;
+}
+///all of the functions that make up the main game
+void mainGame(){
+    count.attach(&counter,1.0);///counts every second for the lives function etc.
+    flash.attach(&Flash,0.25);
+    push.rise(&pause);
+    butt.rise(&pause);
+    life=3;
+    startFlag=0;
+    winFlag=0;
+    clear();
+    maze1();
+    i=1;
+    j=24;
+    while(life&&!winFlag) {
+        power=0;
+        border();
+        if (printFlag) {
+            printFlag=0;
+            move();
+        }
+        collide1();
+        winning();
+        lives();
+        if(flashFlag)
+            lcd.clearPixel(i,j);
+        if(!flashFlag||joystick.direction!=CENTRE)
+            lcd.setPixel(i,j);
+        lcd.refresh();
+    }
+    if(mazeFlag==1){
+        score1=mazeFlag*life*(100-countFlag);///change this equation to change how the score is set
+        if(screen)
+            score1=score1+50;///change this equation to change how the score is set
+        
+        int Score1;///tells it that the value to be read is an integer value
+    
+        FILE *fp1 = fopen("/local/score1.txt","r");///opens score1.txt
+        fscanf(fp1,"%i",&Score1);///searches the file for an integer followed by a string
+        fclose(fp1);
+        
+        if(score1>Score1)
+            scoreWrite1();
+    }
+    if(mazeFlag==2){
+        score2=mazeFlag*life*(100-countFlag);///change this equation to change how the score is set
+        if(screen)
+            score2=score2+50;///change this equation to change how the score is set
+        
+        int Score2;///tells it that the value to be read is an integer value
+    
+        FILE *fp3 = fopen("/local/score2.txt","r");///opens score2.txt
+        fscanf(fp3,"%i",&Score2);///searches the file for an integer
+        fclose(fp3);
+        
+        if(score2>Score2)
+            scoreWrite2();
+    }
+    if(mazeFlag==3){
+        score3=mazeFlag*life*(100-countFlag);///change this equation to change how the score is set
+        if(screen)
+            score3=score3+50;///change this equation to change how the score is set
+        
+        int Score3;///tells it that the value to be read is an integer value
+    
+        FILE *fp5 = fopen("/local/score3.txt","r");///opens score3.txt
+        fscanf(fp5,"%i",&Score3);///searches the file for an integer followed by a string
+        fclose(fp5);
+        
+        if(score3>Score3)
+            scoreWrite3();
+    }
+    clear();
+}
+
+///mini game
+void endGame(){
+    flash.attach(&Flash,0.25);
+    red1=0;
+    red2=0;
+    red3=0;
+    yel=0;
+    buzzer=0;
+    push.rise(&menus);
+    butt.rise(&clear);
+    lcd.clear();
+    i=42;
+    j=24;
+    while(b) {
+        power=0;
+        endBorder();
+        lcd.setPixel(i,j);
+        if(flashFlag)
+            lcd.clearPixel(i,j);
+        if(!flashFlag||joystick.direction!=CENTRE)
+            lcd.setPixel(i,j);
+        if(printFlag) {
+            printFlag=0;
+            endMove();
+            lcd.refresh();
+        }
+    }
+    lcd.clearPixel(i,j);
+    clear();
+    lcd.refresh();
+    i=1;
+    j=24;
+}
+
+///function called to clear the screen in the mini game if the external button is pressed
+///and anywhere else its called
+void clear(){
+    lcd.clearPixel(i,j);
+    lcd.clear();
+    lcd.refresh();
+}
+
+///function linked to the flash ticker
+///toggles the flag between 0 and 1 and sets the pixel to flash
+void Flash(){
+    flashFlag=!flashFlag;
+    lcd.setPixel(i,j);
+}
+
+///function called to check if the goal area has been reached in the time
+///if not then the player is sent back to the begining of the level
+///also indicates when time is running out on the buzzer and yellow LED
+///added a safe zone at the start of the maze so the counter doesn't start straight away
+///being in the safe zone stops the counter and flashes the yellow LED
+void counter(){
+    buzzer=0;
+    if((i==0||i==1||i==2||i==3)){
+        yel=!yel;
+        countFlag=0;
+    }
+    if(!(i==0||i==1||i==2||i==3))
+        yel=0;
+    if(startFlag){
+        red1=0;
+        red2=0;
+        red3=0;
+        yel=0;
+    }
+    /////the possition of the safe zone
+    if(!startFlag&&!(i==0||i==1||i==2||i==3))
+        countFlag++;
+    /////if the current pixel is in the safe zone
+    if(mazeFlag==3){
+        if(!winFlag&&(countFlag==37||countFlag==38||countFlag==39)) {///change these numbers to change the warning time before the time limit
+        yel=0.1*bright;
+        buzzer=0.9;
+        }
+        if(countFlag==40) {///change this number to change the time limi for the level
+            countFlag=0;
+            yel=0;
+            buzzer=0;
+            life--;
+            lcd.clearPixel(i,j);
+            if(!winFlag) {
+                i=1;
+                j=24;
+            }
+        }
+    }
+    if(mazeFlag==2){
+        if(!winFlag&&(countFlag==42||countFlag==43||countFlag==44)) {///change these numbers to change the warning time before the time limit
+        yel=0.1*bright;
+        buzzer=0.9;
+        }
+        if(countFlag==45) {///change this number to change the time limi for the level
+            countFlag=0;
+            yel=0;
+            buzzer=0;
+            life--;
+            lcd.clearPixel(i,j);
+            if(!winFlag) {
+                i=1;
+                j=24;
+            }
+        }
+    }
+    if(mazeFlag==1){
+        if(!winFlag&&(countFlag==27||countFlag==28||countFlag==29)) {///change these numbers to change the warning time before the time limit
+        yel=0.1*bright;
+        buzzer=0.9;
+        }
+        if(countFlag==30) {///change this number to change the time limi for the level
+            countFlag=0;
+            yel=0;
+            buzzer=0;
+            life--;
+            lcd.clearPixel(i,j);
+            if(!winFlag) {
+                i=1;
+                j=24;
+            }
+        }
+    }
+}
+
+///displays the number of remaining level attempts, or lives, on the red LEDS
+void lives(){
+    if(life==3) {
+        red1=0.1*bright;
+        red2=0.1*bright;
+        red3=0.1*bright;
+    } else if(life==2) {
+        red1=0.0;
+        red2=0.1*bright;
+        red3=0.1*bright;
+    } else if(life==1) {
+        red1=0.0;
+        red2=0.0;
+        red3=0.1*bright;
+    } else {
+        red1=0.0;
+        red2=0.0;
+        red3=0.0;
+        start();
+    }
+}
+
+///function that checks if the goal area has been reached
+void winning(){
+        if(j==0){
+            lcd.clearPixel(i,j);
+            i=1;
+            j=24;
+            winFlag=1;
+        }
+}
+
+///displays the maze by opening a picture and setting the pixels accordingly
+void maze1(){
+    for (int x = 0; x <= ny-1; x++) {
+        if(mazeFlag==1){
+            img = fopen("/local/TEST.BMP", "r");///TEST.BMP, 3x3 walls, 5x5 corridoors, if the corners are solid then the player dies when they go into one beacause the number of neighbouring pixels is the same as a collision
+        }
+        if(mazeFlag==2){
+            img = fopen("/local/MAZE1.BMP", "r");///MAZE1.BMP, 3x3 walls, 4x4 corridoors, if the corners are solid then the player dies when they go into one beacause the number of neighbouring pixels is the same as a collision
+        }
+        if(mazeFlag==3){
+            img = fopen("/local/MAZE2.BMP", "r");////MAZE2.BMP, 3x3 walls, 3x3 corridorrs, if the corners are solid then the player dies when they go into one beacause the number of neighbouring pixels is the same as a collision
+        }
+        fseek (img , 54 + (nx*x*3) , SEEK_SET);
+        fread(imgbuffer, (nx*3), 1, img);
+        fclose(img);
+        for (int y = 0; y <= nx-1; y++) {
+            int red = imgbuffer[y*3];
+            if (red == 0) {
+                lcd.setPixel(y,(ny-1)-x);
+            }
+        }
+    }
+    lcd.refresh();
+}
+
+
+///hardwall boundary so the player can't go off the screen
+void border(){
+    if (i>=nx)
+        i=nx-1;
+    if (i<=0)
+        i=0;
+    if (j>=ny)
+        j=ny-1;
+    if (j<=0)
+        j=0;
+}
+
+///portal boundary, so the player can go from one side to another or top to bottom, used in the mini game only
+void endBorder(){
+    if (i>=nx)
+        i=0;
+    if (i<0)
+        i=nx-1;
+    if (j>=ny)
+        j=0;
+    if (j<0)
+        j=ny-1;
+}
+
+void collide1(){    
+    int block=0;
+    if(joystick.direction==UP){
+        if(lcd.getPixel(i,j)&&lcd.getPixel(i,j-1)){
+            block++;
+        }
+        if(lcd.getPixel(i+1,j)||lcd.getPixel(i-1,j)){
+            block++;
+        }
+    }
+    if(joystick.direction==DOWN){
+        if(lcd.getPixel(i,j)&&lcd.getPixel(i,j+1)){
+            block++;
+        }
+        if(lcd.getPixel(i+1,j)||lcd.getPixel(i-1,j)){
+            block++;
+        }
+    }
+    if(joystick.direction==LEFT){
+        if(lcd.getPixel(i,j)&&lcd.getPixel(i-1,j)){
+            block++;
+        }
+        if(lcd.getPixel(i,j+1)||lcd.getPixel(i,j-1)){
+            block++;
+        }
+    }
+    if(joystick.direction==RIGHT){
+        if(lcd.getPixel(i,j)&&lcd.getPixel(i+1,j)){
+            block++;
+        }
+        if(lcd.getPixel(i,j+1)||lcd.getPixel(i,j-1)){
+            block++;
+        }
+    }
+    if(block==2){
+        if(!(i==0||i==1||i==2||i==3)){///outside the safe zone
+            lcd.clearPixel(i,j);
+            clear();
+            maze1();
+            life--;
+            i=1;
+            j=24;
+            countFlag=0;
+        }else{
+            lcd.clearPixel(i,j);
+            clear();
+            maze1();
+            i=1;
+            j=24;
+            countFlag=0;
+        }
+    }
+}
+    
+///checks the joystick direction and alters the possition of the pixel accordingly while clearing off where the pixel just was
+///used in the main game only
+void move(){
+    if (joystick.direction == DOWN) {
+        j++;
+        lcd.clearPixel(i,j-1);
+    }
+    if (joystick.direction == UP) {
+        j--;
+        lcd.clearPixel(i,j+1);
+    }
+    if (joystick.direction == LEFT) {
+        i--;
+        lcd.clearPixel(i+1,j);
+    }
+    if (joystick.direction == RIGHT) {
+        i++;
+        lcd.clearPixel(i-1,j);
+    }
+}
+
+///checks the direction of the joystick and updates the position of the pixel accordingly
+///keeps the path drawn unless cleared by the button, see clear()
+void endMove(){
+    if (joystick.direction == DOWN) {
+        j++;
+    }
+    if (joystick.direction == UP) {
+        j--;
+    }
+    if (joystick.direction == LEFT) {
+        i--;
+    }
+    if (joystick.direction == RIGHT) {
+        i++;
+    }
+}
+
+/* Joystick
+Example code of how to read a joystick
+
+https://www.sparkfun.com/products/9032
+
+Craig A. Evans
+7 March 2015
+*/
+
+/// read default positions of the joystick to calibrate later readings
+void calibrateJoystick(){
+    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(){
+    /// read current joystick values relative to calibrated values (in range -0.5 to 0.5, 0.0 is centred)
+    joystick.x = xPot - joystick.x0;
+    joystick.y = yPot - joystick.y0;
+    /// read button state
+    joystick.button = button;
+
+    /// calculate direction depending on x,y values
+    /// tolerance allows a little lee-way in case joystick not exactly in the stated direction
+
+    if ( fabs(joystick.y) < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
+        joystick.direction = CENTRE;
+    } else if ( joystick.y > DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
+        joystick.direction = DOWN;
+    } else if ( joystick.y < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
+        joystick.direction = UP;
+    } else if ( joystick.x > DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
+        joystick.direction = RIGHT;
+    } else if ( joystick.x < DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
+        joystick.direction = LEFT;
+    }
+    /// set flag for printing
+    printFlag = 1;
 }
\ No newline at end of file