#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SH110X.h>

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
Adafruit_SH1107 display = Adafruit_SH1107(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire);

const int joyXPin = A0; // Joystick x-axis (HO)
const int joyYPin = A1; // Joystick y-axis (VE)
const int buttonPin = 2; // Joystick button (SE)
int posX = SCREEN_WIDTH / 2, posY = SCREEN_HEIGHT / 2; // Initial position

void setup() {
  pinMode(buttonPin, INPUT_PULLUP); // Joystick button input

  if (!display.begin(0x3C, true)) {  // Address 0x3C for 128x64
    Serial.println(F("SH1107 allocation failed"));
    for(;;);
  }
  display.clearDisplay();
  display.display();
}

void loop() {
  int joyX = analogRead(joyXPin);
  int joyY = analogRead(joyYPin);
  int buttonState = digitalRead(buttonPin);

  // Map joystick values to screen coordinates
  posX = map(joyX, 0, 1023, 0, SCREEN_WIDTH - 1);
  posY = map(joyY, 0, 1023, 0, SCREEN_HEIGHT - 1);

  // Clear the previous position
  display.clearDisplay();

  // Draw at the new position
  if (buttonState == LOW) {
    display.fillCircle(posX, posY, 3, SH110X_WHITE); // Larger circle when button pressed
  } else {
    display.drawCircle(posX, posY, 3, SH110X_WHITE); // Regular circle when moving joystick
  }

  // Update the display
  display.display();

  delay(50); // Short delay for responsiveness
}