namastejs/src/games/snake/render.js

A spiritual greeting from your JavaScript code. Because every function deserves a 'Namaste 🙏'

const { style } = require("../../../theme");

/* ─────────────── TERMINAL HELPERS ─────────────── */
function resetScreen() {
  process.stdout.write("\x1b[H\x1b[J");
}

function hideCursor() {
  process.stdout.write("\x1b[?25l");
}

function showCursor() {
  process.stdout.write("\x1b[?25h");
}

/* ─────────────── RENDER ─────────────── */
function render(state, config) {
  hideCursor();
  resetScreen();

  const { WIDTH, HEIGHT } = config;
  let out = "";

  /* ───── Top Border ───── */
  out += style.gray(`╔${"═".repeat(WIDTH)}╗\n`);

  for (let y = 0; y < HEIGHT; y++) {
    out += style.gray("║");

    for (let x = 0; x < WIDTH; x++) {
      const isCollision =
        state.status === "GAME_OVER" &&
        state.collision &&
        state.collision.x === x &&
        state.collision.y === y;

      const isHead = state.snake[0].x === x && state.snake[0].y === y;

      const isBody = state.snake.some(
        (p, i) => i !== 0 && p.x === x && p.y === y
      );

      if (isCollision) {
        out += style.bgBrightRed(style.bold("X"));
      } else if (isHead) {
        out += style.brightGreen(style.bold("◉"));
      } else if (isBody) {
        out += style.green("●");
      } else if (state.food.x === x && state.food.y === y) {
        out += style.red("●");
      } else {
        out += style.dim("·");
      }
    }

    out += style.gray("║\n");
  }

  /* ───── Bottom Border ───── */
  out += style.gray(`╚${"═".repeat(WIDTH)}╝\n`);

  /* ───── HUD ───── */
  out +=
    style.cyan(" Score: ") +
    style.brightYellow(state.score.toString()) +
    style.cyan("   Speed: ") +
    style.brightYellow(state.speed.toString()) +
    "\n";

  out += style.gray(" ↑ ↓ ← → Move   Space Pause/Resume   Ctrl+C Exit");

  /* ───── Overlays ───── */
  if (state.paused) {
    out += "\n\n" + style.inverse(style.bold("        ⏸  PAUSED        "));
  }

  if (state.status === "GAME_OVER") {
    out +=
      "\n\n" +
      style.bold(style.red("        💀 GAME OVER 💀        ")) +
      "\n" +
      style.gold(`        Final Score: ${state.score}        `) +
      "\n" +
      style.gray("        Press Ctrl+C to exit        ");
  }

  process.stdout.write(out);
}

module.exports = {
  render,
  showCursor,
};