#include <Arduino.h>
#include <U8g2lib.h>

U8G2_SH1106_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/U8X8_PIN_NONE);

// Movement pins
#define Wmove 0 // Pin for moving up (increase y)
#define Amove 4 // Pin for moving left (decrease x)
#define Smove 2 // Pin for moving down (decrease y)
#define Dmove 3 // Pin for moving right (increase x)

int x = 0; // Player's x-coordinate (row)
int y = 0; // Player's y-coordinate (column)

// Store image data in program memory (Flash) to save SRAM
static const unsigned char image_ButtonCenter_bits[] PROGMEM = {
  0x1c, 0x22, 0x5d, 0x5d, 0x5d, 0x22, 0x1c };

void setup() {
  u8g2.begin();
  Serial.begin(9600);
  
  // Configure input pins for movement
  pinMode(Wmove, INPUT_PULLUP);
  pinMode(Amove, INPUT_PULLUP);
  pinMode(Smove, INPUT_PULLUP);
pinMode(Dmove, INPUT_PULLUP); }

void drawPlayerIcon(int player_x, int player_y) { 
  u8g2.clearBuffer();
  u8g2.setFontMode(1);
  u8g2.setBitmapMode(1);
  
  // Draw the outer frame
  u8g2.drawFrame(7, 1, 107, 59);
  
  // Calculate player icon's position dynamically
  int player_x_offset = 9 + (player_x * 8); // Horizontal offset
  int player_y_offset = 3 + (player_y * 8); // Vertical offset
  
  // Draw the player icon at the current position
  u8g2.drawXBMP(player_x_offset, player_y_offset, 7, 7, image_ButtonCenter_bits);
u8g2.sendBuffer(); }

void Movement() {
  if (digitalRead(Wmove) == LOW && y < 6) {  // 13 columns, y max is 12
    y++;
    delay(50); // Debounce
  }
  if (digitalRead(Amove) == LOW && x > 0) {
    x--;
    delay(50); // Debounce
  }
  if (digitalRead(Smove) == LOW && y > 0) {
    y--;
    delay(50); // Debounce
  }
  if (digitalRead(Dmove) == LOW && x < 12) {  // 7 rows, x max is 6
    x++;
delay(50); }}

void loop() {
  Movement();
  drawPlayerIcon(x, y);

  Serial.print("Player is at: (");
  Serial.print(x + 1);
  Serial.print(", ");
  Serial.print(y + 1);
  Serial.println(")");
  
  delay(100);
}