unity.lua

--[[DAP configuration that allows Neovim DAP client to attach to a running
Unity Player instance.]]

local dap = require("dap")

dap.adapters.unity = function(cb, config)
  -- options passed to unity-debug-adapter.exe

  -- when connecting to a running Unity Editor, the TCP address of the listening connection is localhost
  -- on Linux, use: ss -tlp | grep 'Unity' to find the debugger connection
  vim.ui.input({ prompt = "address [127.0.0.1]: ", default = "127.0.0.1" }, function(result)
    config.address = result
  end)
  vim.ui.input({ prompt = "port: " }, function(result)
    config.port = tonumber(result)
  end)
  cb({
    type = "executable",
    -- adjust mono path - do not use Unity's integrated MonoBleedingEdge
    command = "mono",
    -- adjust unity-debug-adapter.exe path
    args = {
      -- get Unity debug adapter from: https://github.com/walcht/unity-dap
      "<path-to-unity-debug-adapter.exe>",
      -- optional log level argument: trace | debug | info | warn | error | critical | none
      "--log-level=warn",
      -- optional path to log file (logs to stderr in case this is not provided)
      -- "--log-file=<path-to-log-file.txt>",
    },
  })
end

-- make sure not to override other C# DAP configurations
if dap.configurations.cs == nil then
  dap.configurations.cs = {}
end

table.insert(dap.configurations.cs, {
  name = "Unity Editor/Player Instance [Mono]",
  type = "unity",
  request = "attach",
})