Wiley-World.of.Warcraft.Programming.A.Guide.and.Reference.for.Creating.WoW.Addons

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252 Part II ■ Programming in World of WarcraftWorld of Warcraft offers a system that allows addons to register certainglobal variables to be saved between game sessions. These are called savedvariables, named after the table of contents directive that is used to specifythem. There are two different types of saved variables:SavedVariables—Account-wide, accessible to any character on a givenaccount.SavedVariablesPerCharacter—Separate for each individual character,so not even two characters on the same server can share them.Although you could obviously take a normal saved variable and partitionit so multiple users can use it without interfering with each other’s data,each character truly has access to all of the data. On the other hand, thereis no way to simulate a normal saved variable with a per-character savedvariable because all saving and loading is handled directly by the gameclient.Registering a New Saved VariableUsing saved variables is quite easy; you just need to add a directive to youraddon’s table of contents file, and restart the game client. When the gameclient is loaded, it loads any stored data and makes it available to your addon(more on this later). When the game client is closed, a character logs out, orthe user interface is reloaded, the data is saved out to disk.Start by adding a saved variable to BagBuddy.toc. Open the file and add thefollowing after the ## Notes directive:## SavedVariablesPerCharacter: BagBuddy_ItemTimesThere’s really no reason that users would need access to each other’s times,so you can declare your saved variable to be per-character only. That way youdon’t have to be concerned about storing your data in any specific place;you can just leave it in the table itself.For this change to take effect, you will need to quit your client and re-openit. Changes that are made to the metadata of an addon’s table of contents fileare refreshed only when the client is opened, not on user interface reload.Saved Variables and ADDON_LOADEDWhen an addon is being loaded (that is, when the code is actually being parsedand run) any saved variables are not yet available. Once the addon has finishedinitializing, the client loads the saved variables and fires the ADDON_LOADED
Chapter 13 ■ Responding to Game Events 253event. Although the reasons for this weren’t discussed in the previous section,that is why initialization is delayed until ADDON_LOADED.Using Items from BagBuddyFinding items in your inventory is great, but it would be nicer to be able toclick to use them once you’ve found them. This can be accomplished usingsecure templates, which are discussed in Chapter 15. For now, you can make thefollowing changes to your code to enable that functionality.In BagBuddy_OnLoad(), change the loop that creates item slots to register forright-clicks (change is highlighted):-- Create the item slotsself.items = {}for idx = 1, 24 dolocal item = CreateFrame(“Button“, “BagBuddy_Item“ .. idx, self, i“BagBuddyItemTemplate“)item:RegisterForClicks(“RightButtonUp“)self.items[idx] = itemif idx == 1 thenitem:SetPoint(“TOPLEFT“, 40, -73)elseif idx == 7 or idx == 13 or idx == 19 thenitem:SetPoint(“TOPLEFT“, self.items[idx-6], “BOTTOMLEFT“, 0, -7)elseitem:SetPoint(“TOPLEFT“, self.items[idx-1], “TOPRIGHT“, 12, 0)endendIn BagBuddy_Update(), add the following highlighted line in the conditionalthat indicates there is an item in the slot. This sets the button up to use thenamed item when it is right-clicked.if entry then-- There is an item in this slotbutton:SetAttribute(“item2“, entry.name)button.link = entry.linkbutton.icon:SetTexture(entry.texture)The last two changes must be made in BagBuddy.xml. First, change theopening tag for BagBuddyItemTemplate from
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A Guide and Reference for Creating
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World of Warcraft® Programming: A
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CreditsAcquisitions EditorScott Mey
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xAcknowledgmentsI’d first like to
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xiiContents at a GlanceChapter 13 R
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xivContentsUsing History to Make Ch
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xviContentsExtending Tables with Me
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xviiiContents## Title: 127## Notes:
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xxContentsInvestigating UIPanelTemp
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xxiiContentsAdding an OnEvent Handl
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xxivContentsPreparing for the Token
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xxviContentsWriting an OnUpdate Fun
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xxviii ContentsSummary 496The Code
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xxxContentsChapter 28 API Categorie
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xxxii ContentsTrade Skill Functions
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xxxiv ContentsRequesting Data Befor
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IntroductionSince World of Warcraft
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Introduction xxxixPart II discusses
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CHAPTER1Programming for Worldof War
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Chapter 1 ■ Programming for World
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CHAPTER2Exploring Lua BasicsLua is
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Chapter 2 ■ Exploring Lua Basics
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40 Part I ■ Learning to ProgramTh
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CHAPTER4Working with TablesKeeping
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CHAPTER8Anatomy of an AddonAs discu
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Chapter 8 ■ Anatomy of an Addon 1
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CHAPTER9Working with Frames, Widget
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CHAPTER16Binding Keys and Clicksto
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338 Part III ■ Advanced Addon Tec
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CHAPTER22Creating Scroll FramesWhen
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CHAPTER24Scanning and ConstructingT
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CHAPTER25Taking Protected Actionin
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PartIVReferenceIn This PartChapter
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542 Part IV ■ ReferenceAPI Meta-T
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544 Part IV ■ ReferenceRAID—Spe
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546 Part IV ■ Referencezero inten
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548 Part IV ■ ReferenceDigits 7-1
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550 Part IV ■ ReferenceRepresents
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552 Part IV ■ Referenceitemdata
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554 Part IV ■ Reference5. Epic (p
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556 Part IV ■ Referencemouseover
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558 Part IV ■ ReferenceConfirmati
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560 Part IV ■ ReferenceThe Muted
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564 Part IV ■ ReferenceUsable fol
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566 Part IV ■ ReferenceAfter call
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614 Part IV ■ ReferenceCloseBattl
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616 Part IV ■ ReferenceFires the
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618 Part IV ■ ReferenceCombatLogC
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620 Part IV ■ ReferenceCOMBATLOG_
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622 Part IV ■ ReferenceUsable bet
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624 Part IV ■ ReferenceCreateMacr
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626 Part IV ■ ReferenceDeclineNam
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644 Part IV ■ ReferenceThe toolti
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646 Part IV ■ Referencelocal acti
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666 Part IV ■ Referencebreakenden
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668 Part IV ■ ReferencevehicleY
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674 Part IV ■ ReferenceGetCVarMin
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676 Part IV ■ ReferenceReturns:ch
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678 Part IV ■ ReferenceGetChatWin
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680 Part IV ■ ReferenceCR_CRIT_TA
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682 Part IV ■ Referenceenable—1
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690 Part IV ■ ReferenceGetCurrent
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692 Part IV ■ ReferencesubType—
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696 Part IV ■ ReferenceoffhandExp
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700 Part IV ■ ReferenceGetGlyphSo
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702 Part IV ■ ReferenceThis funct
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704 Part IV ■ ReferencenumWithdra
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706 Part IV ■ ReferenceGetGuildEv
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710 Part IV ■ Referencestationery
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712 Part IV ■ Referencetexture—
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714 Part IV ■ ReferenceReturns:di
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728 Part IV ■ ReferenceisLeader
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736 Part IV ■ ReferenceGetMapInfo
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740 Part IV ■ ReferenceitemCount
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744 Part IV ■ ReferenceChatFrame1
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746 Part IV ■ ReferenceIf the giv
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748 Part IV ■ ReferenceisFull—1
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750 Part IV ■ ReferenceGetNumComp
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752 Part IV ■ ReferenceGetNumFrie
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754 Part IV ■ Referenceindex—In
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756 Part IV ■ ReferenceOnly valid
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758 Part IV ■ ReferenceGetNumSave
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760 Part IV ■ Referenceinspect—
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762 Part IV ■ ReferenceOnly valid
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766 Part IV ■ ReferenceNote: GetP
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768 Part IV ■ ReferenceReturns:na
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770 Part IV ■ Referencecasting a
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774 Part IV ■ ReferenceGetQuestLo
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800 Part IV ■ Referencepet—The
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808 Part IV ■ ReferenceTotem func
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810 Part IV ■ ReferenceGetTradeSk
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812 Part IV ■ ReferenceGetTradeSk
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814 Part IV ■ ReferenceplayerReag
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906 Part IV ■ ReferenceOutput inc
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1022 Part IV ■ ReferenceLua APIFo
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1026 Part IV ■ ReferenceGetAchiev
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1028 Part IV ■ ReferenceIsUsableA
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1080 Part IV ■ ReferencePitchUpSt
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1082 Part IV ■ ReferenceParty Fun
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1084 Part IV ■ ReferenceGetPetFoo
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1088 Part IV ■ ReferenceUnitChara
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1090 Part IV ■ ReferenceGetGossip
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1094 Part IV ■ ReferenceRaid Func
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1096 Part IV ■ Referenceissecure
Page 1140 and 1141:
1098 Part IV ■ ReferenceGetSocket
Page 1142 and 1143:
1100 Part IV ■ ReferenceIsAttackS
Page 1144 and 1145:
1102 Part IV ■ ReferenceGetManaRe
Page 1146 and 1147:
1104 Part IV ■ ReferenceGetNumTal
Page 1148 and 1149:
1106 Part IV ■ ReferenceTracking
Page 1150 and 1151:
1108 Part IV ■ ReferenceGetTradeS
Page 1152 and 1153:
1110 Part IV ■ ReferenceIsTrainer
Page 1154 and 1155:
1112 Part IV ■ ReferenceUnitInBat
Page 1156 and 1157:
1114 Part IV ■ ReferenceGetCurren
Page 1158 and 1159:
1116 Part IV ■ ReferenceVehicleAi
Page 1160 and 1161:
1118 Part IV ■ ReferenceDisplayCh
Page 1163 and 1164:
CHAPTER29Widget ReferenceTo respond
Page 1165 and 1166:
Chapter 29 ■ Widget Reference 112
Page 1167 and 1168:
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1278 Part IV ■ ReferenceADDON_ACT
Page 1322 and 1323:
1280 Part IV ■ ReferenceCALENDAR_
Page 1324 and 1325:
1282 Part IV ■ ReferenceCHAT_MSG_
Page 1326 and 1327:
1284 Part IV ■ ReferenceCORPSE_OU
Page 1328 and 1329:
1286 Part IV ■ ReferenceGUILDBANK
Page 1330 and 1331:
1288 Part IV ■ ReferenceKNOWLEDGE
Page 1332 and 1333:
1290 Part IV ■ ReferenceOPEN_TABA
Page 1334 and 1335:
1292 Part IV ■ ReferencePLAYER_EN
Page 1336 and 1337:
1294 Part IV ■ ReferenceQUEST_LOG
Page 1338 and 1339:
1296 Part IV ■ ReferenceTRADE_POT
Page 1340 and 1341:
1298 Part IV ■ ReferenceUNIT_PET_
Page 1342 and 1343:
1300 Part IV ■ ReferenceUPDATE_MA
Page 1345:
PartVAppendixesIn This PartAppendix
Page 1348 and 1349:
1306 Part V ■ AppendixesUse Meani
Page 1350 and 1351:
1308 Part V ■ Appendixeshard codi
Page 1352 and 1353:
1310 Part V ■ AppendixesOrganizat
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1312 Part V ■ Appendixesespeciall
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1314 Part V ■ Appendixesitself to
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1316 Part V ■ AppendixesTAIL CALL
Page 1360 and 1361:
1318 Part V ■ AppendixesEach time
Page 1362 and 1363:
1320 Part V ■ AppendixesEven if y
Page 1364 and 1365:
1322 Part V ■ AppendixesEach even
Page 1366 and 1367:
1324 Part V ■ Appendixesthe basic
Page 1368 and 1369:
1326 Part V ■ AppendixesEntering
Page 1371 and 1372:
APPENDIXBUtilizing Addon LibrariesW
Page 1373 and 1374:
Appendix B ■ Utilizing Addon Libr
Page 1375 and 1376:
Page 1377 and 1378:
Page 1379:
Page 1382 and 1383:
1340 Part V ■ AppendixesOne major
Page 1384 and 1385:
1342 Part V ■ Appendixessvn updat
Page 1386 and 1387:
1344 Part V ■ AppendixesGit and M
Page 1388 and 1389:
1346 Part V ■ AppendixesOnce that
Page 1390 and 1391:
1348 Part V ■ Appendixesremote: a
Page 1392 and 1393:
1350 Part V ■ Appendixeshave alre
Page 1394 and 1395:
1352 Part V ■ Appendixesthe other
Page 1396 and 1397:
1354 Part V ■ Appendixesand open
Page 1399 and 1400:
IndexAAbandonQuest, 556AbandonSkill
Page 1401 and 1402:
Index ■ A-B 1359hyperlink, 549-55
Page 1403 and 1404:
Index ■ B-C 1361BuyPetition, 564B
Page 1405 and 1406:
Index ■ C-C 1363Lua library funct
Page 1407 and 1408:
Index ■ C-C 1365storing damage an
Page 1409 and 1410:
Index ■ D-E 1367dropdown frames,
Page 1411 and 1412:
Index ■ F-F 1369TabButtonTemplate
Page 1413 and 1414:
Index ■ G-G 1371GetAchievementNum
Page 1415 and 1416:
Index ■ G-G 1373GetGameTime, 699G
Page 1417 and 1418:
Index ■ G-G 1375GetNumLetters(),
Page 1419 and 1420:
Index ■ G-G 1377GetStatusBarColor
Page 1421 and 1422:
Index ■ G-I 1379GuildInvite, 832G
Page 1423 and 1424:
Index ■ I-K 1381IsPlaying(), Anim
Page 1425 and 1426:
Index ■ L-M 1383Lua interpreterdo
Page 1427 and 1428:
Index ■ O-O 1385OnClick widget sc
Page 1429 and 1430:
Index ■ P-R 1387PlaySoundFile, 89
Page 1431 and 1432:
Index ■ S-S 1389how addon code ca
Page 1433 and 1434:
Index ■ S-S 1391SetInventoryItem(
Page 1435 and 1436:
Index ■ S-S 1393overview of, 337S
Page 1437 and 1438:
Index ■ T-T 1395table.insert, 58-
Page 1439 and 1440:
Index ■ U-U 1397UnitArmor, 962Uni
Page 1441 and 1442:
Index ■ W-W 1399WWebLua, 15well-f
Page 1443:
Your secret weapon againstthe Lich
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Wiley-World.of.Warcraft.Programming.A.Guide.and.Reference.for.Creating.WoW.Addons

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