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+# Zed Editor Setup for ReiLua
+
+This guide explains how to set up autocomplete, type hints, and documentation for ReiLua in Zed Editor.
+
+---
+
+## Method 1: Using Lua Language Server (Recommended)
+
+Zed uses the **Lua Language Server (LuaLS)** for Lua support. ReiLua includes `tools/ReiLua_API.lua` with LuaLS annotations.
+
+### Setup Steps
+
+#### 1. Install Lua Language Server in Zed
+
+Zed should automatically install LuaLS when you open a Lua file. If not:
+
+1. Open Zed
+2. Go to **Extensions** (Cmd/Ctrl + Shift + X)
+3. Search for "Lua"
+4. Install the Lua extension
+
+#### 2. Configure Your Project
+
+Create a `.luarc.json` file in your project root:
+
+```json
+{
+  "runtime.version": "Lua 5.4",
+  "workspace.library": [
+    "${3rd}/luassert/library",
+    "${3rd}/busted/library"
+  ],
+  "completion.enable": true,
+  "diagnostics.globals": [
+    "RL"
+  ],
+  "workspace.checkThirdParty": false
+}
+```
+
+#### 3. Copy tools/ReiLua_API.lua to Your Project
+
+Copy `tools/ReiLua_API.lua` to your game project folder:
+
+```bash
+# From ReiLua directory
+cp tools/ReiLua_API.lua /path/to/your/game/project/
+```
+
+Or on Windows:
+```powershell
+Copy-Item tools/ReiLua_API.lua "C:\path\to\your\game\project\"
+```
+
+#### 4. (Optional) Create Library Directory
+
+For better organization, create a library directory:
+
+```
+your-game/
+├── main.lua
+├── .luarc.json
+└── .lua/
+    └── tools/ReiLua_API.lua
+```
+
+Update `.luarc.json`:
+```json
+{
+  "runtime.version": "Lua 5.4",
+  "workspace.library": [".lua"],
+  "completion.enable": true,
+  "diagnostics.globals": ["RL"],
+  "workspace.checkThirdParty": false
+}
+```
+
+---
+
+## Method 2: Global Configuration (All Projects)
+
+To make ReiLua API available for all projects:
+
+### Windows
+
+1. Create directory: `%USERPROFILE%\.luarocks\lib\lua\5.4\`
+2. Copy `tools/ReiLua_API.lua` to this directory
+3. Add to global LuaLS config:
+
+**Location:** `%APPDATA%\Zed\settings.json` or via Zed settings
+
+```json
+{
+  "lsp": {
+    "lua-language-server": {
+      "settings": {
+        "Lua.workspace.library": [
+          "C:\\Users\\YourName\\.luarocks\\lib\\lua\\5.4"
+        ],
+        "Lua.diagnostics.globals": ["RL"]
+      }
+    }
+  }
+}
+```
+
+### Linux/macOS
+
+1. Create directory: `~/.lua/reilua/`
+2. Copy `tools/ReiLua_API.lua` to this directory
+3. Update Zed settings:
+
+```json
+{
+  "lsp": {
+    "lua-language-server": {
+      "settings": {
+        "Lua.workspace.library": [
+          "~/.lua/reilua"
+        ],
+        "Lua.diagnostics.globals": ["RL"]
+      }
+    }
+  }
+}
+```
+
+---
+
+## Method 3: Using Zed's LSP Configuration
+
+Create a `.zed/settings.json` in your project:
+
+```json
+{
+  "lsp": {
+    "lua-language-server": {
+      "settings": {
+        "Lua.runtime.version": "Lua 5.4",
+        "Lua.workspace.library": [
+          "."
+        ],
+        "Lua.completion.enable": true,
+        "Lua.completion.callSnippet": "Replace",
+        "Lua.completion.displayContext": 3,
+        "Lua.diagnostics.globals": [
+          "RL"
+        ],
+        "Lua.hint.enable": true,
+        "Lua.hint.paramName": "All",
+        "Lua.hint.setType": true
+      }
+    }
+  }
+}
+```
+
+---
+
+## Verifying Setup
+
+Create a test file `test.lua`:
+
+```lua
+function RL.init()
+    -- Type "RL." and you should see autocomplete
+    RL.SetWindowTitle("Test")  -- Should show documentation
+
+    local color = RL.RED  -- Should autocomplete color constants
+
+    -- Hover over functions to see documentation
+    RL.DrawText("Hello", 10, 10, 20, color)
+end
+
+function RL.update(delta)
+    -- 'delta' should show as number type
+end
+```
+
+If autocomplete works, you should see:
+- ✅ Function suggestions when typing `RL.`
+- ✅ Parameter hints when calling functions
+- ✅ Documentation on hover
+- ✅ Constant values (RL.RED, RL.KEY_SPACE, etc.)
+
+---
+
+## Enhanced Features
+
+### Enable Inlay Hints
+
+In Zed settings:
+
+```json
+{
+  "inlay_hints": {
+    "enabled": true
+  },
+  "lsp": {
+    "lua-language-server": {
+      "settings": {
+        "Lua.hint.enable": true,
+        "Lua.hint.paramName": "All",
+        "Lua.hint.setType": true,
+        "Lua.hint.paramType": true
+      }
+    }
+  }
+}
+```
+
+This will show:
+- Parameter names inline
+- Variable types
+- Return types
+
+### Disable Annoying Warnings
+
+Add these to suppress common false positives:
+
+```json
+{
+  "lsp": {
+    "lua-language-server": {
+      "settings": {
+        "Lua.diagnostics.disable": [
+          "lowercase-global",
+          "unused-local",
+          "duplicate-set-field",
+          "missing-fields",
+          "undefined-field"
+        ],
+        "Lua.diagnostics.globals": ["RL"]
+      }
+    }
+  }
+}
+```
+
+**Common warnings and what they mean:**
+- `lowercase-global` - Using global variables with lowercase names (RL is intentional)
+- `unused-local` - Local variables that aren't used
+- `duplicate-set-field` - Redefining functions (callback functions are expected to be redefined)
+- `missing-fields` - Table fields that might not exist
+- `undefined-field` - Accessing fields that aren't documented
+
+> **Note:** The `tools/ReiLua_API.lua` file now uses type annotations instead of function definitions for callbacks to prevent duplicate warnings.
+
+---
+
+## Troubleshooting
+
+### "duplicate-set-field" Error
+
+**Problem:** Getting warnings like `Duplicate field 'init'. (Lua Diagnostics. duplicate-set-field)`
+
+**Why:** The `tools/ReiLua_API.lua` file previously defined callback functions as empty function definitions. When you define them in your `main.lua`, LSP sees it as redefining the same field.
+
+**Solution:** The latest `tools/ReiLua_API.lua` now uses type annotations instead:
+
+```lua
+-- Old way (caused warnings)
+function RL.init() end
+
+-- New way (no warnings)
+---@type fun()
+RL.init = nil
+```
+
+**Fix Steps:**
+1. **Update `tools/ReiLua_API.lua`** - Copy the latest version from the repository
+2. **Or add to diagnostics.disable** in your configuration:
+   ```json
+   {
+     "diagnostics.disable": ["duplicate-set-field"]
+   }
+   ```
+3. **Restart Zed** to reload the configuration
+
+**Benefits of the new approach:**
+- ✅ No duplicate warnings
+- ✅ Still get autocomplete
+- ✅ Still get documentation on hover
+- ✅ Still get type checking
+
+---
+
+### Autocomplete Not Working
+
+1. **Restart Zed** after configuration changes
+2. **Check LSP Status**: Look for Lua Language Server in bottom-right status bar
+3. **Verify File Location**: Ensure `tools/ReiLua_API.lua` is in the workspace
+4. **Check Console**: Open Zed's log to see LSP errors
+
+### Performance Issues
+
+If the language server is slow:
+
+```json
+{
+  "lsp": {
+    "lua-language-server": {
+      "settings": {
+        "Lua.workspace.maxPreload": 2000,
+        "Lua.workspace.preloadFileSize": 1000
+      }
+    }
+  }
+}
+```
+
+### Missing Documentation
+
+Ensure hover is enabled:
+
+```json
+{
+  "hover_popover_enabled": true
+}
+```
+
+---
+
+## Advanced: Custom Annotations
+
+You can extend `tools/ReiLua_API.lua` with your own game types:
+
+```lua
+---@class Player
+---@field x number
+---@field y number
+---@field health number
+
+---@class Enemy
+---@field x number
+---@field y number
+---@field damage number
+
+-- Your game globals
+---@type Player
+player = {}
+
+---@type Enemy[]
+enemies = {}
+```
+
+---
+
+## Keyboard Shortcuts in Zed
+
+- **Trigger Autocomplete**: `Ctrl+Space` (Windows/Linux) or `Cmd+Space` (macOS)
+- **Show Documentation**: Hover or `Ctrl+K Ctrl+I`
+- **Go to Definition**: `F12` or `Cmd+Click`
+- **Find References**: `Shift+F12`
+- **Rename Symbol**: `F2`
+
+---
+
+## Additional Resources
+
+- [Lua Language Server GitHub](https://github.com/LuaLS/lua-language-server)
+- [LuaLS Annotations Guide](https://github.com/LuaLS/lua-language-server/wiki/Annotations)
+- [Zed Documentation](https://zed.dev/docs)
+
+---
+
+## Example Project Structure
+
+```
+my-reilua-game/
+├── .luarc.json              # LuaLS configuration
+├── .zed/
+│   └── settings.json        # Zed-specific settings
+├── tools/ReiLua_API.lua           # API definitions (copy from ReiLua)
+├── main.lua                 # Your game entry point
+├── player.lua
+├── enemy.lua
+└── assets/
+    ├── sprites/
+    └── sounds/
+```
+
+---
+
+## Quick Start Template
+
+Save this as `.luarc.json` in your project:
+
+```json
+{
+  "runtime.version": "Lua 5.4",
+  "completion.enable": true,
+  "completion.callSnippet": "Replace",
+  "diagnostics.globals": ["RL"],
+  "diagnostics.disable": [
+    "lowercase-global",
+    "duplicate-set-field",
+    "missing-fields"
+  ],
+  "workspace.checkThirdParty": false,
+  "workspace.library": ["."],
+  "hint.enable": true
+}
+```
+
+Save this as `.zed/settings.json`:
+
+```json
+{
+  "lsp": {
+    "lua-language-server": {
+      "settings": {
+        "Lua.hint.enable": true,
+        "Lua.hint.paramName": "All",
+        "Lua.hint.setType": true,
+        "Lua.diagnostics.disable": [
+          "lowercase-global",
+          "duplicate-set-field",
+          "missing-fields"
+        ]
+      }
+    }
+  },
+  "inlay_hints": {
+    "enabled": true
+  }
+}
+```
+
+Then copy `tools/ReiLua_API.lua` to your project root, and you're ready to go!
+
+---
+
+**Happy Coding! 🚀**