F3 Debug Integration

This page documents how Speedometer integrates into Minecraft's client-side debug rendering pipeline using DebugScreenEntries and DebugScreenEntryList.

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📊 Debug Integration Infobox

Property	Value
Speedometer Registry Key	Identifier.withDefaultNamespace("speedometer")
Native Vanilla Key	Identifier.withDefaultNamespace("player_speed")
Interface Implemented	net.minecraft.client.gui.components.debug.DebugScreenEntry
Mixin Target 1	net.minecraft.client.gui.components.debug.DebugScreenEntries
Mixin Target 2	net.minecraft.client.gui.components.debug.DebugScreenEntryList
Default Display State	DebugScreenEntryStatus.IN_OVERLAY

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🏗 Architecture Diagram

+----------------------------------------------------------------+
|                     Minecraft F3 Debug Screen                   |
+----------------------------------------------------------------+
                               |
                   DebugScreenEntries.<clinit>()
                               |
                     DebugScreenEntriesMixin
                               |
       +-----------------------+-----------------------+
       |                                               |
  register()                                      put()
  Speedometer ID                                  Player Speed ID
       |                                               |
DebugEntrySpeedometer                     DebugEntryPlayerSpeedWrapper
  (Standalone Line)                         (Consolidated Line)

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⚙️ Registration Workflow

1. Static Class Loading Injection (DebugScreenEntriesMixin): During tail initialization (<clinit>) of DebugScreenEntries, Speedometer invokes the private static register method to add speedometer to vanilla's entry registry (ENTRIES_BY_ID).
2. Default Status Initialization (DebugScreenEntryListMixin): When DebugScreenEntryList.rebuildCurrentList() executes, Speedometer verifies if speedometer exists in allStatuses. If absent, it automatically registers speedometer with DebugScreenEntryStatus.IN_OVERLAY.
3. Spy Wrapper Replacement: If vanilla natively registers player_speed (e.g. in Minecraft 26.3+), DebugScreenEntriesMixin replaces vanilla's DebugScreenEntry object in ENTRIES_BY_ID with our DebugEntryPlayerSpeedWrapper.

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🔗 Related Pages

• Smart Consolidation & Layouts
• Architecture & Mixins
• API & Addon Integration