Cobalt for HoI4

Cobalt is a language extension for Hearts of Iron IV modding that provides fast, context-aware IntelliSense, syntax highlighting, and symbol indexing across your entire workspace.

It is designed to work on large mods without requiring files to be opened, giving immediate feedback and completions from all relevant sources.

Features

IntelliSense

• Auto-complete for:

  • Scripted Effects
  • Scripted Triggers
  • Scripted Modifiers
  • GFX Definitions
  • Localisation keys

• Includes both:

  • Built-in HoI4 documentation
  • User-defined symbols from your mod

• Localisation entries display their actual text in completion:

Workspace Indexing

• Indexes all HoI4 files on startup:
• .txt, .yml, .gui, .gfx
• Works even if files are not opened
• Automatically updates when files change

Syntax Highlighting

• Clausewitz script files
• Localisation files
• GFX / GUI definitions
• Semantic highlighting for:
• Effects
• Triggers
• Modifiers

Snippets

• Common HoI4 scripting patterns
• Expanding set of templates (WIP)

Extension Settings

cobalt-hoi4.gamePath

Path to your HoI4 installation directory. Used for loading base game documentation.

cobalt-hoi4.defaultLoc

Default localisation language to use for IntelliSense.

Default: english

Only localisation entries matching this language will appear in completions.

Roadmap

• Effect parameter auto-completion
• .mod file support
• Improved snippet coverage
• Cross-referencing and go-to-definition

Known Limitations

• Localisation parsing does not yet support multiline strings

Contributing

Suggestions for snippets, features, or improvements are welcome.