Project 03 · Unreal Engine · 生存恐怖关卡设计Survival horror level design
用噪声陷阱、道具门槛与有限弹药，把两层医院组织成学习、搜寻与返程战斗。
Noise traps, item gates and limited ammunition turn two hospital floors into a sequence of learning, searching and return-route combat.
一层学习噪声，二层冒险搜寻，返程检验弹药分配。Learn noise downstairs, search at risk upstairs, then manage ammunition on the return.
从空区域出发，围绕目标、路线与陷阱搭建病房区和手术区，布置病床、隔断、交互点与空间连接。
Built the ward and operating ward from empty areas around objectives, routes and traps: beds, partitions, interaction points and connections.
组织探索流程与道具依赖：一层教授规则，二层通过有风险的搜寻检验规则，返程解锁后进入最终战斗。
Structured exploration and item dependencies: the ground floor teaches, the upper floor tests through risky searches, and the return unlock leads to the final fight.
门后是武器房：用断线钳剪开武器柜，拿霰弹枪和霰弹。
Behind it is the weapon room: cut the locker open with the bolt cutters and take the shotgun and shells.
密码写在纸条上，与门禁卡放在同一张桌上。门后是厕所，里面有办公室钥匙和霰弹。
The code note and keycard share one desk. Behind the door is the restroom, with the office key and shells.
同一把断线钳先开武器柜，最后剪断出口锁链。
The same cutters open the cabinet and, finally, the exit.
在二楼厕所拿到；回到熟悉的办公室，钥匙打开通往战斗区的新路。
Found in the upstairs restroom; back in the office, it opens a new route into combat.
研究了什么，以及如何转化为路线、资源与声音的设计目标。What I studied, and how it shaped goals for routes, resources and sound.
研究问题：如何让玩家权衡前进的收益、暴露的风险与资源的消耗？
Research question: how can players weigh the reward of pushing on against the risk of exposure and the cost of resources?
资料来源：PlayStation 官方攻略（2019）、Naughty Dog 开发者解析（2023）。Sources: PlayStation Blog guide (2019), Naughty Dog developer article (2023).
参考：环境噪声陷阱。借鉴：用声音与敌人的反应，让路线风险清晰可读。
Reference: environmental-noise traps. Taken: sound and enemy reactions make route risk legible.
参考：弹药有限，玩家要在击杀与绕行间选择；当前的消耗会影响后续余量。借鉴：用补给和路线影响战斗选择。
Reference: limited ammo forces kill-or-avoid choices; spending now affects what's left later. Taken: supplies and routes shape combat choices.
参考：警察局把房间、上锁的门和钥匙编成一个能反复穿行的整体；拿到钥匙后回到早先去过的地方，会打开新的路。借鉴：一层办公室的门一开始打不开；在二层厕所拿到钥匙后回头打开，通往最后的走廊战斗。早先的障碍变成了新的出口。
Reference: the police station weaves rooms, locked doors and keys into one space you cross again and again; returning with a key opens new routes through places you have already been. Taken: the ground-floor office door is locked at first; the key found in the upstairs restroom opens it on the way back, leading to the final corridor fight. An early obstacle becomes the new exit.
参考：失去视觉，依靠声音感知环境；警觉反应帮助玩家判断风险。借鉴：让移动方式改变敌人的注意力。
Reference: blind, they sense by sound; alert reactions help players judge risk. Taken: how you move changes what enemies notice.
如何通过场景布置影响玩家的移动选择，并让每次搜寻都有明确目的？
How can set dressing shape movement choices and give every search a clear purpose?
— 核心设计问题— the core design question
疫情爆发后，医院陷入死寂。感染者在病房间游荡，堵塞的通道和上锁的房间让逃生更加困难。玩家要在病房区与手术区寻找线索、工具和武器，再沿返程路线抵达出口。
After an outbreak the hospital has fallen silent. The infected wander the wards, while blocked passages and locked rooms complicate escape. Players search the ward and operating area for clues, tools and weapons before working back to an exit.
声音会在楼内传播。一次不慎的踩踏就可能将附近的感染者引向声源，改变原本安全的路线。
Sound carries through the building. A careless step can draw nearby infected toward its source and change the safest route.
玩家在决定绕行之前，就能看到碎片和敌人。
Debris and enemies are visible before a detour decision.
线索与门锁赋予每个房间明确的探索目的。
Clues and locks give each room a clear purpose.
先教噪声规则，再引入道具门槛，最后用走廊战斗考验有限弹药的分配。
Teach noise rules, introduce item gates, then test limited ammo in corridor combat.
教授噪声规则，让玩家穿过病床区寻找墙洞。Teach the noise rule, then send players through the beds to find the wall gap.
A1 位于入口病床旁，教程聚焦地面碎片，建立「陷阱外观 = 噪声」的关联，再把控制权交还玩家。
A1 sits by the entrance beds. The tutorial focuses on floor debris, linking its look to noise, then returns control.
A4 占据内侧捷径，A5、A6 靠近开口与返程路线——往返两个方向都需要选择路线。
A4 takes the inner shortcut; A5 and A6 sit near openings and the return route — both directions need a choice.
A2、A3 位于转角与路线中段，促使玩家观察地面与前方路径，打断不加观察的持续前进。
A2 and A3 sit at turns and mid-route, so players check the ground and path instead of pushing blindly.
墙洞标明阶段出口，办公室通向上楼的梯子，为自由搜寻提供明确的目的地。
The wall gap marks the stage exit; the office leads to the ladder upstairs — a clear destination for open searching.
在二层搜寻中运用噪声规则：门锁确立目标，病床与设备提供不同的接近路线。Apply the noise rule while searching: locks set the goals, beds and equipment offer different approaches.
门禁卡与密码线索在同一张桌上；断线钳用于打开武器柜。
Keycard and code share a desk; bolt cutters open the weapon cabinet.
玩家决策Decision把线索与对应的门锁匹配起来。
Match each clue to its lock.
钥匙门后是武器房（霰弹枪与霰弹），门禁卡加密码的门后是厕所（办公室钥匙与霰弹）。
Behind the key door is the weapon room (shotgun and shells); behind the keycard-and-code door is the restroom (office key and shells).
玩家决策Decision按任意顺序探索，下楼前收齐关键道具。
Explore in either order; collect essentials before going down.
布置工具线索，保持返程连接点清晰。
Place the tool clue; keep the way back clear.
玩家决策Decision识别二层目标，记住返程路线。
Read the upstairs goal; remember the way back.
搜寻路线穿过病床间隙，接近目标的路上布置噪声区。
Search routes thread between beds; noise zones guard the approaches.
玩家决策Decision观察敌人与地面危险，选择接近目标的路线。
Watch enemies and hazards; choose an approach.
噪声系统、可读性，以及灯光与音乐如何跟着威胁变化。The noise system, its readability, and how light and music follow the threat.
把调查声源和追击玩家分开，给玩家留出离开声源、调整路线的时间。
Separating investigating the source from chasing the player gives players time to leave and change route.
灯光以 6 秒为周期缓慢呼吸；探索音乐低音量循环，给玩家留下观察环境的空间。
Lights breathe on a 6 s cycle; quiet exploration music leaves room to observe.
灯光约 0.15 秒内切换为 0.7 秒脉冲；追击音乐约 0.35 秒内进入，探索音乐降到 20%。
Lights switch in ~0.15 s to a 0.7 s pulse; chase music enters in ~0.35 s; exploration drops to 20%.
灯光 2.5 秒内恢复慢呼吸；追击音乐保持 2 秒再用约 5 秒淡出。再次被追击时不重播前奏。
Lights recover over 2.5 s; chase music holds 2 s, fades over ~5 s. Renewed pursuit doesn't replay the intro.
只调查声源不会触发灯光快闪；灯光按区域响应，音乐采用全局状态，跨房间、跨楼层都保持连续。Investigation alone never triggers rapid pulses; lighting responds per area, music is global and stays continuous across rooms and floors.
噪声、AI、门锁怎样实现，朋友测试和自测中改了哪些数。How noise, AI and locks were built, and which numbers changed in friend and self-testing.
敌人被噪声引来后，只完成了调查，不会转入攻击。改法：调查期间加入一步确认——噪声累积到门槛，或在低噪声下近距离等待一段时间，再检查存活、高度差与视线，确认后才进入攻击分支。
Drawn by noise, enemies finished investigating but never attacked. Fix: a confirmation step during investigation — accumulated noise reaching a threshold, or a short close-range wait at low noise — followed by alive, height and sight checks before the attack branch.
每次陷阱触发增加 15 点噪声，从安静状态起步时覆盖 3 米；16 项已记录的运行检查覆盖噪声累积、范围、高度与玩家确认。新声音不会重置已确认的追击。Each trap adds 15 points, reaching 3 m from quiet; 16 recorded runtime checks cover accumulation, range, height and confirmation. New sounds don't reset a confirmed chase.
调整从哪里来，以及这个关卡留下的设计经验。Where the adjustments came from, and what this level taught me.
调整来自朋友测试和自测。玩法与蓝图系统均为本人实现；模型与音频使用现有素材。
Adjustments came from friend and self-testing. All gameplay and Blueprint systems are my own; models and audio are existing assets.
风险需要清晰的提示和反应时间。数值平衡、交互范围与环境灯光，都会影响一条路线是否可玩。
Risk needs clear signals and time to react. Balance values, interaction ranges and lighting all decide whether a route is playable.
— 设计反思— design reflection
Project 03 · 实机约 5 分 08 秒About 5 min 08 s of gameplay
两层平面图、同机位对比和流程图都可以点开看高清大图。
Maps, same-camera comparisons and the flow chart all open in high resolution.
