์œ ๋‹ˆํ‹ฐ Start ๋ฉ”์†Œ๋“œ์—์„œ rigid = GetComponent<Rigidbody2d> ์ด๋ ‡๊ฒŒํ•ด์„œ ์ฐธ์กฐ ์—ฐ๊ฒฐํ•˜๋Š” ๊ฒƒ๊ณผ ๊ทธ๋ƒฅ public Rigidbody rigid; ์ด๋ ‡๊ฒŒ ์ธ์ŠคํŽ™ํ„ฐ์—์„œ ๋ณด์ด๊ฒŒ ๋งŒ๋“ ํ›„ ๋“œ๋ ˆ๊ทธํ•ด์„œ ๋„ฃ๋Š”๊ฒƒ ์ค‘์— ์–ด๋А๊ฒŒ ๋” ์ข‹์•„?