Read sensors is now done.

First steps on moves were taken as well

snake.ino

@@ -11,10 +11,22 @@ const int col[8] = {
 int pixels[8][8];
 
 // cursor position:
-int x = 5;
+int x = 4;
-int y = 5;
+int y = 4;
+int z = 0;
+
+// up: 1
+// right: 2
+// down: 3
+// left: 4
+int cur_dir = 0;
+int snake_x = 4,
+    snake_y = 4;
 
 void setup() {
+  //Serial.begin(9600);          // 9600 bps
+  // Enable the Z pin
+  pinMode(z, INPUT_PULLUP);
   // initialize the I/O pins as outputs
   // iterate over the pins:
   for (int thisPin = 0; thisPin < 8; thisPin++) {
@@ -32,29 +44,133 @@ void setup() {
       pixels[x][y] = HIGH;
     }
   }
+
+  /*pixels[2][3] = LOW;
+  pixels[3][2] = LOW;
+  pixels[4][2] = LOW;
+  pixels[4][3] = LOW;
+  pixels[4][4] = LOW;*/
+  pixels[snake_x][snake_y] = LOW;
 }
 
 void loop() {
+  delay(300);
   // read input:
-  readSensors();
+  // up: 1
+  // right: 2
+  // down: 3
+  // left: 4
+  switch(read_sensors())
+  {
+    case 0: // iddle
+      // Just don't
+    break;
+    case 1: // up
+      // Move
+      pixels[snake_x][++snake_y] = LOW;
+    break;
+    case 2: // right
+      // Move
+      pixels[++snake_x][snake_y] = LOW;
+    break;
+    case 3: // down
+      // Move
+      pixels[snake_x][--snake_y] = LOW;
+    break;
+    case 4: // left
+      // Move
+      pixels[--snake_x][snake_y] = LOW;
+    break;
+  }
 
   // draw the screen:
-  refreshScreen();
+  refresh_screen();
+}
+
+// iddle: 0
+// up: 1
+// right: 2
+// down: 3
+// left: 4
+int read_sensors() {
+  int clicked = digitalRead(z); // if 0, then clicked
+  x = 7 - map(analogRead(A0), 0, 1021, 0, 7);
+  Serial.print("Just read x=: ");
+  Serial.print(x);
+  Serial.print("\n");
+  y = map(analogRead(A1), 0, 1021, 0, 7)+1;
+  Serial.print("Just read y=: ");
+  Serial.print(y);
+  Serial.print("\n");
+
+  if (x == 4 && y == 4) {
+    Serial.print("We're iddle\n");
+    return 0;
+  }
+  else if (abs(4-x) > abs(4-y)) // X
+  {
+    Serial.print("Let's consider x\n");
+    if (x < 4) {
+      Serial.print("Move right\n");
+      return 2;
+    } else {
+      Serial.print("Move left\n");
+      return 4;
+    }
+  }
+  else
+  {
+    Serial.print("Let's consider y\n");
+    if (y > 4) {
+      Serial.print("Move up\n");
+      return 1;
+    } else {
+      Serial.print("Move down\n");
+      return 3;
+    }
   }
 
-void readSensors() {
-  // turn off the last position:
-  pixels[x][y] = HIGH;
-  // read the sensors for X and Y values:
-  x = 7 - map(analogRead(A0), 0, 1022, 0, 7);
-  y = map(analogRead(A1), 0, 1022, 0, 7);
   // set the new pixel position low so that the LED will turn on
   // in the next screen refresh:
-  pixels[x][y] = LOW;
-
 }
 
-void refreshScreen() {
+/*bool to_right() {
+  // read the sensors for X
+  x = 7 - map(analogRead(A0), 0, 1021, 0, 7);
+  Serial.print("rX is: ");
+  Serial.print(x);
+    Serial.print("\n");
+  if ((x > 4 && cur_dir != 4) || // user inputs right and it isn't currently going left
+      (cur_dir == 2 && (x == 4 && y == 4)) // user has no input and cur_dir is set
+     ) {
+      cur_dir = 2;
+      return true;
+  }
+  return false;
+}
+
+bool to_left() {
+  // read the sensors for X
+  x = 7 - map(analogRead(A0), 0, 1021, 0, 7);
+  Serial.print("lX is: ");
+  Serial.print(x);
+    Serial.print("\n");
+  if ((x < 4 && cur_dir != 2) || // user inputs right and it isn't currently going left
+      (cur_dir == 4 && (x == 4 && y == 4)) // user has no input and cur_left is set
+     ) {
+      cur_dir = 4;
+      return true;
+  }
+  return false;
+}
+
+void blink(int x, int y)
+{
+
+  
+}*/
+
+void refresh_screen() {
   // iterate over the rows (anodes):
   for (int thisRow = 0; thisRow < 8; thisRow++) {
     // take the row pin (anode) high: