台地結界

The Great Plateau barrier 台地結界是遊戲裏阻止林克在拿到滑翔傘前就離開初始台地的機制。

實作

台地結界一共有兩層：第一層是圍繞台地的霧，林克只要碰到霧就會被抓回來。第二層是林克的角色模組裏埋了一個檢查林克位置的機關，只要檢查失敗就抓回來。

林克拿到滑翔傘後，這兩層結界會同時消失。這是因為 IsGet_PlayerStole2 這個 flag 被設成 true 了

霧

這個霧的原理跟遊戲裏其他的霧一樣，都是儲存在 map unit 裏的同一種物件（碰到就會觸發事情的物件）。如果 IsGet_PlayerStole2 是 false，那遊戲就會生成霧，否則不生成。

模組裏的機關

很多玩家注意到，即使有辦法避開抓人的霧（靜止器擊飛等等），林克還是會在離台地不遠處被遊戲抓回來。

It turns out that IsGet_PlayerStole2 is also checked by the executable. More precisely, its value is queried by 5 functions in the entire program. One of them is the AIDef:AI/PlayerNormal code which is responsible for handling events for the GameROMPlayer (Link) actor.

In that large AI function, the following piece of code can be seen:

if ( !sForceEnableGlidingAndSurfingAndGiveRupees && !sIsDungeon )
{
  if ( !getFlag_IsGet_PlayerStole2(false) &&
       (x < -1600.0 || x > -350.0 || z < 1400.0 || z > 2400.0) )
  {
    player->respawn_pos.x = -1021.7286376953125;
    player->respawn_pos.y = 253.31527709960938;
    player->respawn_pos.z = 1792.6009521484375;
    AI_AIBase::changeState(this, "奈落開始待ち", 0);
    return;
  }
  ...
}

A few notes:

• 奈落開始待ち means (roughly) 'wait for abyss start'. It is the name of the AIDef:Action/PlayerHellStartWait action for the Player_Link aiprog.
• sIsDungeon is set when GameScene generates a stage. It is false if and only if:
  • the map type isn't any of the following type: MarioClubTestDungeon, CDungeon, MainFieldDungeon
  • and (the map type isn't GameTestDungeon) or the map name is ActorViewer or in debug mode^[check].
• Essentially, what this piece of code does is force Link to void out if (a) debug flags aren't set, (b) he doesn't have the paraglider, (c) Link is not within the bounds of the following rectangle:

On the MainField (Hyrule) and AocField (Trial of the Sword) maps, Link is effectively surrounded by an infinitely high box that he is not allowed to leave until he has the paraglider.

It is a simple, hardcoded, coordinate-based check, and it is embedded in the core Player actor code, so glitching past it is impossible barring major bugs that would likely leave the game broken and unplayable.

Given that events can be delayed and that the actual voidout is done by a demo/cutscene, it is possible to get Link stuck in the PlayerHellStartWait state indefinitely and technically leave the authorized area without being voided out immediately. However, doing any kind of useful action (walking, gliding, riding a horse, etc.) is still impossible, as the paraglider check is done before handling any other regular state. As soon as Link leaves the waiting state, he will be voided out.