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

278 Part II ■ Programming in World of WarcraftWhen run, this format string shows the number of seconds in combat,followed by the amount of damage taken, and the average incoming DPS forthat combat period.CombatTracker_ReportDPS()The CombatTracker_ReportDPS()checks calls the GetNumPartyMembers() functionto determine whether or not the player is in a party. If the number isgreater than 0, the player is in a party. Add the following function to yourCombatTracker.lua:function CombatTracker_ReportDPS()local msgformat = “%d seconds spent in combat with %d incoming idamage. Average incoming DPS was %.2f“local msg = string.format(msgformat, total_time, total_damage, iaverage_dps)if GetNumPartyMembers() > 0 thenSendChatMessage(msg, “PARTY“)elseprint(msg)endendThis function uses a format string to craft the outgoing message, and thenuses GetNumPartyMembers() to decide where to send it. If the player is in aparty, the SendChatMessage() function is used to send the message to theparty; otherwise, the print() function is used to send it to the chat frame sothe player can see it.Testing CombatTrackerYou have completed all the code necessary for a fully functional Combat-Tracker addon. Load the game and select a character. You should be greetedwith the CombatTracker frame right below your minimap.Testing is a very important part of addon writing if you plan to release youraddons to the public. When you write a set of features, it’s prudent to testthem yourself before you ship the addon to the public to ensure that userswon’t get error messages and be reporting them to you after the fact. That sortof troubleshooting is always more difficult than errors you encounter on yourown. Systematically test each portion of the addon.