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scawful aede7551a3 Add new sprite documentation for Minecart, Pedestal, Portal, and Switch Track

- Created detailed documentation for the Minecart sprite, outlining its properties, constants, collision setup, main logic, and design patterns.
- Added documentation for the Pedestal sprite, including its vanilla overrides, custom logic for item interaction, and event triggering based on area context.
- Introduced documentation for the Portal sprite, detailing its two-way warping system, initialization, main logic, and helper routines for seamless transitions.
- Documented the Switch Track sprite, explaining its interactive behavior, state-based animation, and integration with external switches for dynamic track manipulation.

2025-10-03 01:52:48 -04:00

5.4 KiB

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Maku Tree

Overview

The Maku Tree sprite (!SPRID = Sprite_MakuTree) represents a significant NPC in the game, likely serving as a quest giver or a key character in the narrative. Its interactions are primarily dialogue-driven and tied to game progression, culminating in the granting of a Heart Container. Notably, its graphics are not handled by a conventional sprite drawing routine within this file, suggesting it might be a background element or drawn by a separate system.

Sprite Properties

!SPRID: Sprite_MakuTree (Custom symbol, likely a remapped vanilla ID)
!NbrTiles: 00 (Indicates graphics are handled externally or as a background)
!Harmless: 01
!HVelocity: 00
!Health: 0
!Damage: 0
!DeathAnimation: 00
!ImperviousAll: 00
!SmallShadow: 00
!Shadow: 00
!Palette: 0
!Hitbox: $0D
!Persist: 00
!Statis: 00
!CollisionLayer: 00
!CanFall: 00
!DeflectArrow: 00
!WaterSprite: 00
!Blockable: 00
!Prize: 0
!Sound: 00
!Interaction: 00
!Statue: 00
!DeflectProjectiles: 00
!ImperviousArrow: 00
!ImpervSwordHammer: 00
!Boss: 00

Main Structure (`Sprite_MakuTree_Long`)

This routine primarily checks if the Maku Tree sprite is active and then dispatches to its main logic routine. The absence of a direct drawing call (JSR Sprite_MakuTree_Draw) here suggests its visual representation is managed outside of the standard sprite drawing pipeline.

Sprite_MakuTree_Long:
{
  PHB : PHK : PLB
  JSL Sprite_CheckActive : BCC .SpriteIsNotActive
    JSR Sprite_MakuTree_Main
  .SpriteIsNotActive
  PLB
  RTL
}

Initialization (`Sprite_MakuTree_Prep`)

This routine initializes the Maku Tree upon spawning. It sets SprDefl, X and includes logic to potentially play the "Maku Song" by checking a custom progression flag (OOSPROG2).

Sprite_MakuTree_Prep:
{
  PHB : PHK : PLB
  ; Play the Maku Song
  LDA.l OOSPROG2 : AND.b #$04 : BEQ +
    LDA.b #$03 : STA.w $012C
  +
  PLB
  RTL
}

Main Logic & State Machine (`Sprite_MakuTree_Main`)

The Maku Tree's core behavior is managed by a state machine that guides its interaction with Link and quest progression.

Player Collision: Prevents Link from passing through the Maku Tree (JSL Sprite_PlayerCantPassThrough).
MakuTree_Handler: Checks the MakuTreeQuest flag to determine if Link has already met the Maku Tree, transitioning to MakuTree_MeetLink or MakuTree_HasMetLink accordingly.
MakuTree_MeetLink: When Link is close enough, the Maku Tree displays an unconditional message (%ShowUnconditionalMessage($20)), updates quest flags (MakuTreeQuest, MapIcon, $7EF3D6), and transitions to MakuTree_SpawnHeartContainer.
MakuTree_SpawnHeartContainer: Grants Link a Heart Container (LDY #$3E : JSL Link_ReceiveItem) and then transitions to MakuTree_HasMetLink.
MakuTree_HasMetLink: Displays a solicited message (%ShowSolicitedMessage($22)) and updates a progression flag ($7EF3D6) upon message dismissal.

Sprite_MakuTree_Main:
{
  JSL Sprite_PlayerCantPassThrough

  LDA.w SprAction, X
  JSL JumpTableLocal

  dw MakuTree_Handler
  dw MakuTree_MeetLink
  dw MakuTree_SpawnHeartContainer
  dw MakuTree_HasMetLink

  MakuTree_Handler:
  {
    ; Check the progress flags
    LDA.l MakuTreeQuest : AND.b #$01 : BNE .has_met_link
      %GotoAction(1)
      RTS
    .has_met_link
    %GotoAction(3)
    RTS
  }

  MakuTree_MeetLink:
  {
    JSL GetDistance8bit_Long : CMP #$28 : BCS .not_too_close
      %ShowUnconditionalMessage($20)
      LDA.b #$01 : STA.l MakuTreeQuest
      LDA.b #$01 : STA.l MapIcon ; Mushroom Grotto
      LDA.l $7EF3D6 : ORA.b #$02 : STA.l $7EF3D6
      %GotoAction(2)
    .not_too_close
    RTS
  }

  MakuTree_SpawnHeartContainer:
  {
    ; Give Link a heart container
    LDY #$3E : JSL Link_ReceiveItem
    %GotoAction(3)
    RTS
  }

  MakuTree_HasMetLink:
  {
    %ShowSolicitedMessage($22) : BCC .no_talk
      LDA.l $7EF3D6 : ORA.b #$02 : STA.l $7EF3D6
    .no_talk
    RTS
  }
}

Drawing

There is no Sprite_MakuTree_Draw routine defined within this file. This strongly suggests that the Maku Tree's graphical representation is handled as a background element or by a separate drawing system, rather than as a conventional sprite with its own OAM data.

Design Patterns

Background/Static NPC: The Maku Tree functions as a static NPC whose visual representation is likely integrated into the background, as evidenced by the absence of a dedicated sprite drawing routine.
Quest Gating/Progression: The Maku Tree's interactions are deeply tied to custom quest flags (MakuTreeQuest, OOSPROG2, $7EF3D6), controlling when Link can meet it, engage in dialogue, and receive rewards.
Item Granting: The Maku Tree serves as a source for a significant reward, granting Link a Heart Container upon meeting specific quest conditions.
Player Collision: Implements Sprite_PlayerCantPassThrough to make the Maku Tree a solid, impassable object in the game world.
Dialogue-Driven Progression: Dialogue (%ShowUnconditionalMessage, %ShowSolicitedMessage) is strategically used to advance the quest narrative and provide context to the player's journey.

5.4 KiB Raw Blame History