{"id":139,"date":"2024-02-17T16:02:42","date_gmt":"2024-02-17T08:02:42","guid":{"rendered":"https:\/\/levin.ink\/?p=139"},"modified":"2024-02-18T18:00:01","modified_gmt":"2024-02-18T10:00:01","slug":"dst%e4%bb%a3%e7%a0%81%e6%80%bb%e8%a7%88","status":"publish","type":"post","link":"https:\/\/levin.ink\/?p=139","title":{"rendered":"DST\u4ee3\u7801\u603b\u89c8"},"content":{"rendered":"

1 Lua\u5c42\u73af\u5883\u53d8\u91cf<\/h1>\n

1.1 \u5168\u5c40\u73af\u5883<\/h2>\n

lua\uff085.1\uff09\u4e2d\u5168\u5c40\u73af\u5883\u53d8\u91cf\u90fd\u88ab\u50a8\u5b58\u5230\u8868_G<\/code>\u4e2d\u3002<\/p>\n

\u5b9a\u4e49\u5168\u5c40\u53d8\u91cfa=1<\/code>\u7b49\u6548\u4e8e_G.a=1<\/code>\u6216_G["a"]=1<\/code>,\u5982\u679c\u5df2\u7ecf\u5b58\u5728\u53d8\u91cfa<\/code>\u5219\u4f1a\u8986\u76d6a<\/code>\u3002<\/p>\n

\u8bfb\u53d6\u5168\u5c40\u53d8\u91cf\u65f6\u5982b=a+1<\/code>\u7b49\u6548\u4e8e_G.b=_G.a+1<\/code>\uff0c\u5982\u679ca<\/code>\u672a\u5b9a\u4e49\u5219\u62a5\u9519\u3002\u6b64\u65f6\u53ef\u4f7f\u7528rawget<\/code>\uff0crawset<\/code>\u907f\u514d\u62a5\u9519\uff0cb=_G.rawget(_G,"a")+1<\/code>\uff0c\u5f53a<\/code>\u672a\u5b9a\u4e49\u65f6\uff0crawget<\/code>\u8fd4\u56denil\u3002\u4e3a\u4e86\u907f\u514dc=a.b<\/code>\u4e2da<\/code>\u4e3anil<\/code>\u65f6\u62a5\u9519\uff0c\u53ef\u5199\u6210c= a~=nil and a.b<\/code>\uff0cd=a.b.c<\/code>\u53ef\u5199\u6210d=a and a.b and a.b.c<\/code>\u3002<\/p>\n

\u4ee3\u7801\u4e2d\u4f4d\u4e8e_G<\/code>\u7684\u51fd\u6570\u90fd\u4e0d\u9700\u8981\u52a0_G<\/code>\u7684\u524d\u7f00\uff0c\u9664\u975e\u7279\u522b\u8981\u6c42\u8bbf\u95ee_G<\/code>.<\/p>\n

1.1.1 \u521b\u5efa\u548c\u4f7f\u7528\u5168\u5c40\u53d8\u91cf<\/h3>\n
--\u58f0\u660e\nglobal("a")\n--\u58f0\u660e\u5e76\u521d\u59cb\u5316\na=nil\n--\u4f7f\u7528rawset\n_G.rawset(_G,"a",nil)\n--\u5168\u5c40\u73af\u5883\u8d4b\u503c\na=1\n--\u5b89\u5168\u5730\u8d4b\u503c\n_G.rawset(_G,"a",1)\n--\u51fd\u6570\u5185\u4f7f\u7528\nfunction fn()\n    --\u58f0\u660e\u5e76\u521b\u5efa\u5168\u5c40\u53d8\u91cf\uff0cglobal\u51fd\u6570\u7531Klei\u5b9a\u4e49\n    global("b");\n    b=2\n    --\u76f4\u63a5\u4f7f\u7528\u73b0\u6709\u5168\u5c40\u53d8\u91cf\n    a=3\n    --\u4e0d\u53ef\u4ee5\u4e0d\u58f0\u660e\u5c31\u4f7f\u7528\uff08\u51fd\u6570\u5185\u8981\u52a0local\uff09\n    --c=4\n    --\u58f0\u660e\u5e76\u4f7f\u7528\u5c40\u90e8\u53d8\u91cf\n    local c=4\nend<\/code><\/pre>\n
\u6ce8\uff1a\u53ef\u4ee5\u5173\u95ed\u5168\u5c40\u73af\u5883\u7684\u4e25\u683c\u6a21\u5f0f<\/p>\n
local strict = getmetatable(_G)\nif strict and strict.__index then\n    --Klei\u5728_G\u7684\u5143\u8868\u91cc\u653e\u4e86\u4e00\u4e2aassert\uff0c\u4f1a\u5bfc\u81f4\u4f7f\u7528\u672a\u58f0\u660e\u7684\u5168\u5c40\u53d8\u91cf\u62a5\u9519\n    strick_check.__index=nil\nend<\/code><\/pre>\n
\u6216\u8005\u53ef\u4ee5\u5173\u95edassert\uff08\u4ec5\u7528\u4e8e\u5f00\u53d1\uff09<\/p>\n
assert = print<\/code><\/pre>\n
1.1.2 \u4fee\u6539\u5168\u5c40\u53d8\u91cf<\/h3>\n
\u76f4\u63a5\u8d4b\u503c\u5373\u53ef<\/p>\n
\n
'TUNING.GREENAMULET_USES=100'\u5efa\u9020\u62a4\u7b26\u80fd\u4f7f\u7528100\u6b21<\/p>\n<\/blockquote>\n
1.2 \u5c40\u90e8\u73af\u5883<\/h2>\n
\u6240\u6709\u7528local<\/code>\u5173\u952e\u8bcd\u5b9a\u4e49\u7684\u53d8\u91cf\u90fd\u4e0d\u5728_G<\/code>\u91cc\uff0c\u6bd4\u5982local a=1 print(_G.a)<\/code>\uff0c\u8f93\u51favariable 'a' is not decalared<\/code>\u3002\u6b64\u65f6a<\/code>\u4f5c\u4e3a\u4e00\u4e2alocalvalue<\/code>\u5b58\u5728\uff0c\u65e0\u6cd5\u901a\u8fc7\u6b63\u5e38\u624b\u6bb5\u5728\u5176\u4ed6\u73af\u5883\u4e2d\u83b7\u53d6\u3002\u5176\u4e2d\u5b58\u5728\u4e8e\u5f53\u524d\u51fd\u6570\u4f53\u5916\u7684\u5c40\u90e8\u53d8\u91cf\uff0c\u79f0\u4e3aupvalue<\/code>\uff08\u4e0a\u503c\uff09\uff0c\u53ef\u4ee5\u7528debug\u5e93\u83b7\u53d6<\/p>\n
--\u58f0\u660e\nlocal a\n--\u58f0\u660e\u5e76\u521d\u59cb\u5316\nlocal b=nil\n--\u58f0\u660e\u5e76\u7a0d\u540e\u8d4b\u503c\nlocal c\nlocal function print_c()\n    print(c)\nend\nc=1\n--\u4e0d\u5141\u8bb8\u672a\u58f0\u660e\u4f7f\u7528\n--print(d)\n--local d=""<\/code><\/pre>\n
1.2.1 \u4fee\u6539\u5c40\u90e8\u53d8\u91cf<\/h3>\n
\u4e00\u822c\u4f7f\u7528\u8986\u76d6\u6cd5\uff0c\u5c06\u6e90\u4ee3\u7801\u8d4b\u503c\u4e00\u4efd\uff0c\u4fee\u6539\u4e00\u90e8\u5206\u3002<\/p>\n
\n
\u5c06hats.lua\u590d\u5236\u4e00\u4efd\u5230mod\u6587\u4ef6\u5939\uff0c\u7136\u540e\u4fee\u6539\u3002
\n\u5f53\u8fd9\u4e2a\u5c40\u90e8\u53d8\u91cf\u6240\u5728\u7684\u51fd\u6570\u80fd\u591f\u8ffd\u6eaf\u5230\u67d0\u4e2a\u5168\u5c40\u51fd\u6570\u65f6\uff0c\u5c06\u8fd9\u4e2a\u5168\u5c40\u51fd\u6570\u53ca\u76f8\u5173\u4ee3\u7801\u5168\u90e8\u590d\u5236\u4e00\u4efd\uff0c\u518d\u6309\u7167\u4fee\u6539\u5168\u5c40\u53d8\u91cf\u7684\u65b9\u6cd5\u64cd\u4f5c<\/p>\n<\/blockquote>\n
1.2.2 \u4fee\u6539\u4e0a\u503c<\/h3>\n
local function CommandRetarget(...)end\nlocal function DefensiveRetarget(...)\n    CommandRetarget()\nend\nlocal function OnAttacked(...)\n    DefensiveRetarget()\nend\nlocal function fn()\n    inst:ListenForEvent("attacked",OnAttacked)\nend\nreturn Prefab("abigail", fn, assets, prefabs)<\/code><\/pre>\n
\u5728abigail.lua\u4e2d\uff0cfn\u662f\u6700\u7ec8\u80fd\u591f\u4ece\u5168\u5c40\u8bbf\u95ee\u7684\u5c40\u90e8\u51fd\u6570\uff0c\u5176\u4f59\u6240\u6709\u5c40\u90e8\u51fd\u6570\u90fd\u4e0d\u80fd\u76f4\u63a5\u8bbf\u95ee\uff0c\u56e0\u6b64\uff0c\u4f7f\u7528\u8986\u76d6\u6cd5\uff0c\u5c06abigail.lua\u590d\u5236\u4e00\u4efd\uff0c\u7136\u540e\u4fee\u6539\u3002
\n\u4f46\u662f\u7531\u4e8e\u8fd9\u4e9b\u5c40\u90e8\u51fd\u6570\u6bcf\u4e2a\u90fd\u4f4d\u4e8e\u51fd\u6570\u4f53\u5916\uff0c\u6240\u4ee5\u5b83\u4eec\u90fd\u662f\u4e0a\u503c\u3002
\nOnAttacked\u662ffn\u7684\u4e0a\u503c\uff0cDefensiveRetarget\u662fOnAttacked\u7684\u4e0a\u503c,...\u3002\u4e8e\u662f\u53ef\u4ee5\u5f15\u51fa\u4e00\u6761\u94fe\uff1aPrefabs.abigail.fun->OnAttacked->DefensiveRetarget->CommonRetarget\uff0c\u8fd9\u65f6\u53ef\u4ee5\u7528debug\u5e93\u4fee\u6539\u3002<\/p>\n
1.3 \u7c7b\u5c5e\u6027<\/h2>\n
\u5c06\u5168\u5c40\u53d8\u91cf\u6216\u5c40\u90e8\u53d8\u91cf\u6302\u5230\u4e00\u4e2a\u7c7b\u4e0b\u9762\uff0c\u5b83\u5c31\u6210\u4e3a\u7c7b\u7684\u5c5e\u6027\u3002<\/p>\n
local function OnAttacked(...)end\nlocal function fn()\n    inst.OnAttacked=OnAttacked\n    inst:ListenForEvent("attacked",OnAttacked)\nend<\/code><\/pre>\n
\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u8fd9\u4e2a\u53d8\u91cf\u5c31\u53ef\u4ee5\u901a\u8fc7\u7c7b\u76f4\u63a5\u8bbf\u95ee\u4e86\u3002<\/p>\n
\n
\u53ef\u4ee5\u76f4\u63a5\u8bbf\u95eeinst.components.equippable.equipslot<\/code>,\u5373\u4f7f\u5b83\u7684\u503c\u662f\u4e00\u4e2a\u5c40\u90e8\u5b57\u7b26\u4e32\u3002<\/p>\n<\/blockquote>\n
1.4 mod\u73af\u5883<\/h2>\n
Klei\u4e3a\u6bcf\u4e2amod\u8bbe\u7f6e\u4e86\u4e0d\u540c\u7684\u73af\u5883env<\/code>\uff0c\u5e76\u63d0\u4f9b\u4e86GLOBAL<\/code>\u73af\u5883\u7528\u6765\u8bbf\u95ee_G<\/code>\uff0c\u53ef\u4ee5\u624b\u52a8\u66f4\u6539mod\u73af\u5883<\/p>\n
GLOBAL.setmetatable(env,{\n    __index = function(t, k)\n        return GLOBAL.rawget(GLOBAL, k)\n    end,\n})<\/code><\/pre>\n
\u5982\u6b64\u5c31\u53ef\u4ee5\u4f7f\u7528xxx<\/code>\u76f4\u63a5\u8bfb\u53d6GLOBAL<\/code>\u91cc\u7684\u53d8\u91cf\uff0c\u800c\u4e0d\u9700\u8981GLOBAL.xxx<\/code>\u3002
\n\u5728mods.lua\u4e2d\u53ef\u4ee5\u770b\u5230env<\/code>\u91cc\u6709\u4ec0\u4e48\u4e1c\u897f\uff1a<\/p>\n
local env =\n{\n    -- lua\n    pairs = pairs,\n    ipairs = ipairs,\n    print = print,\n    math = math,\n    table = table,\n    type = type,\n    string = string,\n    tostring = tostring,\n    require = require,\n    Class = Class,\n\n    -- runtime\n    TUNING=TUNING,\n\n    -- worldgen\n    LEVELCATEGORY = LEVELCATEGORY,\n    GROUND = GROUND,\n    WORLD_TILES = WORLD_TILES,\n    LOCKS = LOCKS,\n    KEYS = KEYS,\n    LEVELTYPE = LEVELTYPE,\n\n    -- utility\n    GLOBAL = _G,\n    modname = modname,\n    MODROOT = MODS_ROOT..modname.."\/",\n}\nenv.env=env\nenv.modimport=function(modulename)end<\/code><\/pre>\n
\u5728modutils.lua\u4e2d\u5b9a\u4e49\u4e86\u5927\u91cf\u51fd\u6570\u4f9b\u8c03\u7528\u3002\u8fd9\u4e9b\u51fd\u6570\u662fmod\u6700\u91cd\u8981\u7684\u5de5\u5177\uff0c\u56e0\u4e3a\u5b83\u4eec\u63d0\u4f9b\u4e86\u5b98\u65b9\u9884\u7559\u7684\u8bbf\u95ee\u5c40\u90e8\u53d8\u91cf\u7684\u65b9\u6cd5\u3002\u4e0b\u9762\u662f\u5c06\u4f1a\u7528\u5230\u7684\uff1a<\/p>\n
AddGamePostInit\nAddClassPostConstruct\nAddComponentPostInit\nAddPrefabPostInit<\/code><\/pre>\n
1.5 \u6587\u4ef6<\/h2>\n
\u5982\u679c\u4e00\u4e2a\u6587\u4ef6\u7684\u7ed3\u5c3e\u662f\u4e00\u4e2areturn\u8bed\u53e5\uff0c\u5c31\u53ef\u4ee5\u7528modimport<\/code>\u6216require<\/code>\u83b7\u53d6\u3002
\nrequire<\/code>\u9ed8\u8ba4\u7684\u6839\u76ee\u5f55\u662fscripts\/\u6587\u4ef6\u5939\u548c\u6240\u6709\u7684mod\u7684scripts\/\u6587\u4ef6\u5939\u3002\u5b83\u8fd4\u56de\u8be5\u6587\u4ef6return<\/code>\u7684\u503c\u6216true<\/code>\u3002
\nmodimport<\/code>\u51fd\u6570\u8fd0\u884c\u672cmod\u6587\u4ef6\u5939\u4e0b\u67d0\u4e2a\u6587\u4ef6\u4f46\u662f\u4e0d\u8fd4\u56de\u4e1c\u897f\uff0c\u672c\u8d28\u662fkleiloadlua<\/code>\u5305\u88c5\u4e86\u4e00\u4e0b\u3002<\/p>\n
--\u5047\u8bbe\u6709\u4e00\u4e2ascripts\/a.lua\nrequire("a")\n--\u5047\u8bbemod\u6587\u4ef6\u5939\u6709\u4e00\u4e2ascripts\/a.lua\nmodimport("scripts\/a.lua")\n--\u5047\u8bbemod\u6587\u4ef6\u5939\u6709\u4e00\u4e2ab.txt\nmodimport("b.txt")<\/code><\/pre>\n
2 \u901a\u7528\u4fee\u6539\u7b56\u7565<\/h1>\n
2.1 \u88c5\u9970\u5668\u6a21\u5f0f<\/h2>\n
\u88c5\u9970\u5668\u662f\u4e00\u4e2a\u80fd\u591f\u4e3a\u539f\u51fd\u6570\u6dfb\u52a0\u65b0\u529f\u80fd\u7684\u51fd\u6570\u3002\u5982\u679c\u7528oldfn<\/code>\u6307\u4ee3\u539f\u51fd\u6570\uff0cnewfn<\/code>\u6307\u4ee3\u65b0\u51fd\u6570\u3002<\/p>\n
    \n
  • \u8ba9newfn\u5728oldfn\u4e4b\u524d\u6267\u884c<\/li>\n<\/ul>\n
    function wrapper(oldfn, newfn)\n    return function(...)\n        newfn(...)\n        return oldfn(...)\n    end\nend<\/code><\/pre>\n
      \n
    • \u8ba9newfn\u9009\u62e9\u6027\u5730\u66ff\u6362oldfn\u6267\u884c\uff0c\u8981\u6c42newfn\u6267\u884c\u6210\u529f\u5c31\u4e0d\u6267\u884coldfn<\/li>\n<\/ul>\n
      function wrapper_selective(oldfn, newfn)\n    return function(...)\n        local ret = (newfn(...))\n        if ret then--ret[1]\n            return unpack(ret)\n        else\n            return oldfn(...)\n        end\n    end\nend<\/code><\/pre>\n
        \n
      • \u5728oldfn\u6267\u884c\u4e4b\u524d\u66ff\u6362\u53c2\u6570<\/li>\n<\/ul>\n
        function wrapper_modify(oldfn, newfn)\n    return function(...)\n        return oldfn(newfn(...))\n    end\nend<\/code><\/pre>\n
          \n
        • \u8ba9oldfn\u53ea\u6267\u884c\u4e00\u6b21\uff0c\u4e4b\u540e\u5168\u90e8\u6267\u884cnewfn<\/li>\n<\/ul>\n
          function wrapper_once(oldfn, newfn)\n    locak fn = nil\n    return function(...)\n        if fn then\n            return fn(...)\n        else\n            fn = newfn\n            newfn = nil\n            return oldfn(...)\n        end\n    end\nend<\/code><\/pre>\n
          2.2 \u76d1\u542c\u5668\u6a21\u5f0f<\/h2>\n
          \u8fd9\u4e2a\u6a21\u5f0f\u5bf9\u5e94\u7684\u65b9\u6cd5\u5728EntityScript\u91cc\u5b9e\u73b0\u4e86\u3002\u7528inst<\/code>\u6307\u4ee3\u4e00\u4e2a\u5b9e\u4f8b\u3002<\/p>\n
          --\u53d1\u9001\u4e8b\u4ef6\ninst:PushEvent("death")\n--\u76d1\u542c\u4e8b\u4ef6\ninst:ListenForEvent("death",function(inst)\n    print(i"dead")\n    end)\n--\u76d1\u542c\u4e0e\u53d6\u6d88\u76d1\u542c\u4e8b\u4ef6\ninst.ondeath = print\ninst:ListenForEvent("death",inst.ondeath)\ninst:RemoveEventCallback("death",inst.ondeath)<\/code><\/pre>\n
          \u4e8b\u4ef6\u7684\u540d\u8bcd\u53ef\u81ea\u5b9a\u4e49\uff0c\u65e0\u5b98\u65b9\u6587\u6863\uff0c\u53ef\u4ee5\u641c\u7d22\u5b98\u65b9\u4f7f\u7528\u7684\u4e8b\u4ef6\u540d\u79f0<\/p>\n
          2.3 \u94a9\u5b50\uff08hook\uff09\u6280\u672f<\/h2>\n
          \u4f7f\u7528\u88c5\u9970\u5668\u6a21\u5f0f\u88c5\u9970\u4e00\u4e2a\u51fd\u6570\u3002\u6bcf\u5f53\u8fd9\u4e2a\u51fd\u6570\u8c03\u7528\u65f6\u4f60\u90fd\u6709\u673a\u4f1a\u6267\u884c\u4e00\u6b21\u3002
          \n\u901a\u7528\u7684\u5199\u6cd5\uff1a<\/p>\n
          local oldxxx = xxx\nlocal newxxx = function(...)\n    local a = oldxxx(...)\n    return a + 1\nend\nxxx = newxxx<\/code><\/pre>\n
          \u8fd9\u6837\u4e00\u6765\uff0c\u6bcf\u6b21xxx\u9700\u8981\u6267\u884c\u65f6\uff0c\u90fd\u4f1a\u83b7\u5f97\u4f18\u5148\u6267\u884c\u7684\u6743\u5229\uff0c\u53ef\u4ee5\u51b3\u5b9a\u600e\u4e48\u6267\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
          1 Lua\u5c42\u73af\u5883\u53d8\u91cf 1.1 \u5168\u5c40\u73af\u5883 lua\uff085.1\uff09\u4e2d\u5168\u5c40\u73af\u5883\u53d8\u91cf\u90fd\u88ab\u50a8\u5b58\u5230\u8868_G\u4e2d\u3002 \u5b9a\u4e49\u5168\u5c40\u53d8\u91cfa=1 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[11],"class_list":["post-139","post","type-post","status-publish","format-standard","hentry","category-dst","tag-record"],"_links":{"self":[{"href":"https:\/\/levin.ink\/index.php?rest_route=\/wp\/v2\/posts\/139","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/levin.ink\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/levin.ink\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/levin.ink\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/levin.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=139"}],"version-history":[{"count":6,"href":"https:\/\/levin.ink\/index.php?rest_route=\/wp\/v2\/posts\/139\/revisions"}],"predecessor-version":[{"id":147,"href":"https:\/\/levin.ink\/index.php?rest_route=\/wp\/v2\/posts\/139\/revisions\/147"}],"wp:attachment":[{"href":"https:\/\/levin.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=139"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/levin.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=139"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/levin.ink\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=139"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}