-- /run KnightScoutCombat(["pvp", "pve", "ini"], "v2") oder /run KnightScoutCombat()
-- ---------------------------------------------------------------------------------------------
function KnightScoutCombat(arg1, arg2)
   local Skill = {}
   local i = 0
   local solo = ((GetNumPartyMembers() == 0) and (GetNumRaidMembers() == 0))
   local friendly = (not UnitCanAttack("player","target"))
   local enemy = UnitCanAttack("player","target")
   local shield = (GetEquipSlotInfo(17) ~= nil)
   local tspell,ttime,telapsed = UnitCastingTime("target")
   local combat = GetPlayerCombatState()
   local pbuffs = BuffList("player")
   local tbuffs = BuffList("target")
   local phealth = PctH("player")
   local thealth = PctH("target")
   local pmana = PctM("player")
   local tmana = PctM("target")
   local health,buffs
   local focus = UnitMana("player")
   local melee = GetActionUsable(4) -- range checker (heiliger schlag)

   if enemy then
      health = phealth
      buffs = pbuffs
   else
      health = thealth
      buffs = tbuffs
   end

   if (arg1 == "") then
      arg1 = "ini"
   end

   -- we have no pvp/pve yet, so use "ini" all the time:
   arg1 = "ini"

   if (arg1 == "ini") then
      i=i+1; Skill[i] = { name = "Ansturm",                          use = ((not combat) and (not melee) and (enemy)) }
      i=i+1; Skill[i] = { name = "Vampirpfeil",                      use = ((not combat) and (not melee) and (enemy) and (focus >=20)) }
      i=i+1; Skill[i] = { name = "Ruf der Pflicht",                  use = (phealth <= .1) }
      i=i+1; Skill[i] = { name = "Wirbelnder Schild",                use = (enemy and shield) }
      i=i+1; Skill[i] = { name = "Einsch\195\188chterung",           use = (string.find(tbuffs,"Heilige Siegel %(3%)") and (not string.find(pbuffs,"Einsch\195\188chterung")) and (not solo)) }
      i=i+1; Skill[i] = { name = "Verhasster Schlag",                use = (enemy) }
      i=i+1; Skill[i] = { name = "Heiliger Schlag",                  use = (enemy) }
      -- i=i+1; Skill[i] = { name = "Makelloses Scharlachschwert",      use = (enemy) }
      i=i+1; Skill[i] = { name = "Vampirpfeil",                      use = (enemy and (focus >= 20)) }
      i=i+1; Skill[i] = { name = "Heiliges Siegel",                  use = (not string.find(pbuffs,"Heiliges Siegel")) }
      i=i+1; Skill[i] = { name = "Bestrafung",                       use = (enemy and (pmana >= 0.3) and (string.find(tbuffs,"Heilige Siegel %(3%)"))) }
      i=i+1; Skill[i] = { name = "Manar\195\188ckfluss",             use = (enemy and (string.find(tbuffs,"Heilige Siegel %(3%)"))) }
      i=i+1; Skill[i] = { name = "Manar\195\188ckfluss",             use = (enemy and (pmana <= 0.5) and (string.find(tbuffs,"Heilige Siegel %(2%)")) ) }
      i=i+1; Skill[i] = { name = "Manar\195\188ckfluss",             use = (enemy and (thealth <= .25) and (string.find(tbuffs,"Heilige Siegel")) ) }
      i=i+1; Skill[i] = { name = "Manar\195\188ckfluss",             use = (enemy and (pmana <= 0.25) and (string.find(tbuffs,"Heiliges Siegel")) ) }
      i=i+1; Skill[i] = { name = "Abr\195\188stung",                 use = (enemy and (not string.find(tbuffs,"Abr\195\188stung IV"))) }
      -- i=i+1; Skill[i] = { name = "Handgelenkschlag",                 use = (enemy and (focus >= 35)) }
      -- i=i+1; Skill[i] = { name = "Kehlenschlag",                     use = (enemy and (focus >= 15)) }
      i=i+1; Skill[i] = { name = "Bogenschuss",                      use = (enemy) }
   end

   MyCombat(Skill,arg2)
end

DIYCE.lua
knightscout.lua

-- DIY Combat Engine version 1.4

g_skill = {}

function Msg(outstr,a1,a2,a3)
    DEFAULT_CHAT_FRAME:AddMessage(tostring(outstr),a1,a2,a3)
end

function ReadSkills()
    g_skill = {}
    local skillname,slot

    Msg("- Reading Class Skills")
    for page = 1,4 do
        slot = 1
        skillname = GetSkillDetail(page,slot)
        repeat
            local a1,a2,a3,a4,a5,a6,a7,a8,skillusable = GetSkillDetail(page,slot)
            if skillusable then
                g_skill[skillname] = { ["page"] = page, ["slot"] = slot }
            end
            slot = slot + 1
            skillname = GetSkillDetail(page,slot)
        until skillname == nil
    end
end
ReadSkills() -- Read skills into g_skill table at login

function PctH(tgt)
    return (UnitHealth(tgt)/UnitMaxHealth(tgt))
end

function PctM(tgt)
    return (UnitMana(tgt)/UnitMaxMana(tgt))
end

function PctS(tgt)
    return (UnitSkill(tgt)/UnitMaxSkill(tgt))
end

function CancelBuff(buffname)
    local i = 1
    local buff = UnitBuff("player",i)

    while buff ~= nil do
        if buff == buffname then
            CancelPlayerBuff(i)
            return true
        end

        i = i + 1
        buff = UnitBuff("player",i)
    end
    return false
end

function BuffTimeLeft(tgt, buffname)
    local cnt = 1
    local buffcmd, bufftimecmd, buff

    if UnitCanAttack("player", tgt) then
        buffcmd = UnitDebuff
        bufftimecmd = UnitDebuffLeftTime
    else
        buffcmd = UnitBuff
        bufftimecmd = UnitBuffLeftTime
    end

    buff = buffcmd(tgt, cnt)

    while buff ~= nil do
        if string.find(buff, buffname) then
            return bufftimecmd(tgt, cnt)
        end
        cnt = cnt + 1
        buff = buffcmd(tgt, cnt)
    end

    return 0
end

function ChkBuff(tgt,buffname)
    local cnt = 1
    local buffcmd = UnitBuff

    if UnitCanAttack("player",tgt) then
        buffcmd = UnitDebuff
    end
    local buff = buffcmd(tgt,cnt)

    while buff ~= nil do
        if string.gsub(buff, "(%()(.)(%))", "%2") == buffname then
            return true
        end
        cnt = cnt + 1
        buff = buffcmd(tgt,cnt)
    end
    return false
end

function BuffList(tgt)
    local cnt = 1
    local buffcmd = UnitBuff
    local buffstr = "/"

    if UnitCanAttack("player",tgt) then
        buffcmd = UnitDebuff
    end
    local buff = buffcmd(tgt,cnt)

    while buff ~= nil do
        buffstr = buffstr..buff.."/"
        cnt = cnt + 1
        buff = buffcmd(tgt,cnt)
    end

    return string.gsub(buffstr, "(%()(.)(%))", "%2")
end

function CD(skillname)
    local firstskill = GetSkillDetail(2,1)
    if (g_skill[firstskill] == nil) or (g_skill[firstskill].page ~= 2) then
        ReadSkills()
    end

    if g_skill[skillname] ~= nil then
        local tt,cd = GetSkillCooldown(g_skill[skillname].page,g_skill[skillname].slot)
        return cd==0
    elseif skillname == nil then
        return false
    else
        Msg("Skill not available: "..skillname)
        return false
    end
end

function MyCombat(Skill, arg1)
    local spell_name = UnitCastingTime("player")
    local talktome = ((arg1 == "v1") or (arg1 == "v2"))
    local action,actioncd,actiondef,actioncnt
    
    if spell_name ~= nil then
        if (arg1 == "v2") then Msg("- ["..spell_name.."]", 0, 1, 1) end
        return true
    end

    for x,tbl in ipairs(Skill) do
        if Skill[x].use then
            if string.find(Skill[x].name, "Action:") then
                action = tonumber((string.gsub(Skill[x].name, "(Action:)( *)(%d+)(.*)", "%3")))
                _1,actioncd = GetActionCooldown(action)
                actiondef,_1,actioncnt = GetActionInfo(action)
                if GetActionUsable(action) and (actioncd == 0) and (actiondef ~= nil) and (actioncnt > 0) then
                    if talktome then Msg("- "..Skill[x].name) end
                    UseAction(action)
                    return true
                end
            elseif string.find(Skill[x].name, "Custom:") then
                action = string.gsub(Skill[x].name, "(Custom:)( *)(.*)", "%3")
                if CustomAction(action) then
                    return true
                end
            elseif string.find(Skill[x].name, "Item:") then
                action = string.gsub(Skill[x].name, "(Item:)( *)(.*)", "%3")
                if talktome then Msg("- "..Skill[x].name) end
                UseItemByName(action)
                return true
            elseif CD(Skill[x].name) then
                if talktome then Msg("- "..Skill[x].name) end
                CastSpellByName(Skill[x].name)
                return true
            end
        end
    end
    if (arg1 == "v2") then Msg("- [IDLE]", 0, 1, 1) end

    return false
end