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feat(BT12-Dev): InfiniteHorizontalGround 컴포넌트 신규 (PD 결정 (나)·Background 패턴) 

PD: "Background 밑에 GameObject 배치·맵 최하단·맵에 맞게 사이즈 자동" → "(나) 형태로 진행해"

신규 컴포넌트 — Assets/Scripts/Background/InfiniteHorizontalGround.cs:
- InfiniteHorizontalBackground 동일 패턴·BoxCollider 영역 적용
- Start: BoxCollider size.x 측정 + 자식 사본 2개 (Left·Right) 자동 생성
  자식 BoxCollider는 부모 Static Rb attachedRigidbody 자동 상속
- LateUpdate: Camera.x 영역 BoxCollider 폭 정수 배수 root reposition

Scene 변경 — GameObject (Layer 0·Static Rb·직전 48109f9):
- pos (0.5,0,10) → (0, -4.62, 0)
  Background sprite 최하단 = pos.y(0.5) - height(10.25)/2 = -4.62
- BoxCollider size (1,1) → (53.12, 1.00)
  Background sprite width = 26.56 unit × lossyScale 2 (1.7×배경 추가 영역) = 53.12
- InfiniteHorizontalGround 부착

회귀 영역 X:
- KinematicObject Cast — 자식 BoxCollider + 부모 Static Rb 표준 정합
- Wall LayerMask (1<<0) Layer 0 정합
- Composite Level 비활성·Player·Enemy 1.7배·Background reposition Camera.x 동기

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
깃 관리자 2026-05-10 22:35:46 +09:00
parent 93856bc92a
commit 832cc07661
3 changed files with 121 additions and 25 deletions
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63
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81
Assets/Scripts/Background/InfiniteHorizontalGround.cs Normal file
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using UnityEngine;
namespace EerieVillage.Background
{
/// <summary>
/// 무한 가로 스크롤 지면 collider — BoxCollider 재활용 reposition 패턴.
/// PD 지시 (2026-05-10·결정 "(나) 형태로 진행해"): 맵 최하단 이동 가능 길·맵에 맞게 사이즈 자동.
/// InfiniteHorizontalBackground 동일 패턴·BoxCollider 영역 적용.
///
/// 동작:
/// - Start: BoxCollider size.x 측정 + 자식 사본 2개 (Left·Right) BoxCollider 자동 생성.
/// 자식 collider는 부모 Static Rb attachedRigidbody 자동 상속 (Unity 2D Physics 표준).
/// - LateUpdate: Camera.x 영역 BoxCollider 폭 영역 정수 배수 root reposition.
///
/// 효율: BoxCollider 1개 + 자식 2개 = 3개·Camera 영역 항상 collide 정합.
/// </summary>
[RequireComponent(typeof(BoxCollider2D))]
public class InfiniteHorizontalGround : MonoBehaviour
{
Transform _camTr;
float _colliderWidth;
Transform _leftCopy;
Transform _rightCopy;
void Start()
{
var cam = Camera.main;
if (cam == null)
{
Debug.LogWarning($"[InfiniteHorizontalGround@{name}] Camera.main NULL — disable.");
enabled = false;
return;
}
_camTr = cam.transform;
var box = GetComponent<BoxCollider2D>();
// 월드 단위 BoxCollider 폭 (lossyScale 적용)
_colliderWidth = box.size.x * transform.lossyScale.x;
if (_colliderWidth <= 0.001f)
{
Debug.LogWarning($"[InfiniteHorizontalGround@{name}] colliderWidth ~0 — disable.");
enabled = false;
return;
}
// 자식 사본 2개 — Left·Right
_leftCopy = CreateCopy("Left", -_colliderWidth, box);
_rightCopy = CreateCopy("Right", +_colliderWidth, box);
}
Transform CreateCopy(string copyName, float worldOffsetX, BoxCollider2D src)
{
var copy = new GameObject(copyName);
copy.transform.SetParent(transform, false);
copy.layer = gameObject.layer;
// localPosition은 parent.lossyScale 영향 — local 단위 변환
float localOffsetX = worldOffsetX / transform.lossyScale.x;
copy.transform.localPosition = new Vector3(localOffsetX, 0f, 0f);
copy.transform.localScale = Vector3.one;
var box = copy.AddComponent<BoxCollider2D>();
box.size = src.size;
box.offset = src.offset;
box.isTrigger = src.isTrigger;
box.sharedMaterial = src.sharedMaterial;
return copy.transform;
}
void LateUpdate()
{
if (_camTr == null) return;
float dx = _camTr.position.x - transform.position.x;
if (Mathf.Abs(dx) >= _colliderWidth)
{
int n = Mathf.RoundToInt(dx / _colliderWidth);
transform.position += new Vector3(n * _colliderWidth, 0f, 0f);
}
}
}
}

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