代码来源于“易宁”大佬的分享，仅供学习，不要直接复制粘贴。
原帖链接：http://bbs.3dmgame.com/thread-3859071-1-1.html
二八一.菜市场（在兔房买卖农产品）
用MT管理器打开游戏目录/assets/DLC0002/scripts/prefabs/rabbithouse.lua文件，在inst:AddComponent("inspectable")的下一行插入以下内容：
local function ShouldAcceptItem(inst, item)
if item.prefab == "cave_banana" or item.prefab == "carrot" or item.prefab == "corn" or item.prefab == "pumpkin" or item.prefab == "eggplant" or item.prefab == "durian" or item.prefab == "pomegranate" or item.prefab == "dragonfruit" or item.prefab == "berries" or item.prefab == "cactus_meat" or item.prefab == "watermelon" or item.prefab == "acorn" or item.prefab == "goldnugget" then
return true
end
return false
end
local function OnGetItemFromPlayer(inst, giver, item)
if item.prefab == "cave_banana" or item.prefab == "carrot" or item.prefab == "corn" or item.prefab == "pumpkin" or item.prefab == "eggplant" or item.prefab == "durian" or item.prefab == "pomegranate" or item.prefab == "dragonfruit" or item.prefab == "berries" or item.prefab == "cactus_meat" or item.prefab == "watermelon" or item.prefab == "acorn" then
local goldnugget = SpawnPrefab("goldnugget")
giver.components.inventory:GiveItem(goldnugget)
end
if item.prefab == "goldnugget" then
local names = {"cave_banana","carrot","corn","pumpkin","eggplant","durian","pomegranate","dragonfruit","berries","cactus_meat","watermelon","acorn"}
local name = names[math.random(#names)]
local veggie = SpawnPrefab(name)
giver.components.inventory:GiveItem(veggie)
end
end
inst:AddComponent("trader")
inst.components.trader.onaccept = OnGetItemFromPlayer
inst.components.trader:SetAcceptTest(ShouldAcceptItem)
即可将种出来的农产品卖给兔房（拿着农产品左键点兔房），获得1个黄金，黄金会自动打入账户（主角物品条）。也可以给兔房黄金，买入随机品种的农产品，可以买卖的农产品包括香蕉、胡萝卜、茄子、南瓜、玉米、榴莲、石榴、火龙果、浆果、仙人掌肉、西瓜、橡果