Calling the Interface

Use the Chii method from the MajsoulActions package to perform a discard.

Example Code

package main

import (
  "github.com/moxcomic/Archer/actions"
  "github.com/moxcomic/lq"
)

const (
  E_PlayOperation_None           = iota
  E_PlayOperation_Discard
  E_PlayOperation_Chi
  E_PlayOperation_Pon
  E_PlayOperation_Ankan
  E_PlayOperation_Minkan
  E_PlayOperation_Kakan
  E_PlayOperation_RiiChi
  E_PlayOperation_Tsumo
  E_PlayOperation_Ron
  E_PlayOperation_JiuZhongJiuPai
  E_PlayOperation_Babei
  E_PlayOperation_HuanSanZhang
  E_PlayOperation_DingQue
  E_PlayOperation_Reveal
  E_PlayOperation_Unveil
  E_PlayOperation_LockTile
  E_PlayOperation_Revealliqi
)

func onExecute(result *lq.NotifyAIResult, risk []float64, r, m, f, t float64) {
  if result.GetResult()[0].GetType() == E_PlayOperation_Chi {
    if len(result.GetResult()[0].GetCombination()) != 2 {
      fmt.Println("Unable to retrieve the 'Chii' option")
      return
    }

    actions.NewMajsoulActions().Chii(result.GetResult()[0].GetCombination()[0], result.GetResult()[0].GetCombination()[1])
  }
}

In the onExecute function, we determine whether the current action is Chii by checking result.GetResult()[0].GetType(). If so, we retrieve the combination of tiles to perform the Chii from result.GetResult()[0].GetCombination() and call actions.NewMajsoulActions().Chii(result.GetResult()[0].GetCombination()[0], result.GetResult()[0].GetCombination()[1]) to eat the two tiles.
This is just an example. In actual usage, you may need to modify the code according to the real scenario.
For more on lq.NotifyAIResult, refer to NotifyAIResult.
For GetType, refer to Action Types.