WoWInterface - The easiest way to create a "castbar"?

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- - The easiest way to create a "castbar"? (https://www.wowinterface.com/forums/showthread.php?t=38819)

The easiest way to create a "castbar"?

Hi Developers.

I'm fairly new at programming addons.. I have completed my first addon last week, which was purely chatframe-based.
Now I've a new idea for an addon, which should show a kind of castbar for a few seconds, after an event is fired.

I really have no idea how frames, etc works in wow and the tutorials I've found couldn't give me the information I need and the code of, for example, quartz is not that beginner-friendly.

Is there a fairly simple way to create a kind of castbar quick and easy? Does anyone know a good tutorial (I don't like to use, for example, Ace, because I want to learn it for myself, how it works :))?
A simple help, how to show a graphic for a few seconds ingame (best as a function) would be perfect and I would be happy if someone takes the time to help me here.

Best regards,
Anuki

P.S.: I hope my English is good enough to understand me :confused:

http://www.wowpedia.org/Widget_API#StatusBar

WoW offers a simple widget you can use.

lua Code:

local b = CreateFrame("StatusBar", "MyOwnStatusBar")
  b:SetWidth(100)
  b:SetHeight(20)
  b:SetPoint("CENTER",UIParent,"CENTER",0 , 0)
  b:SetMinMaxValues(1,100)
  b:SetOrientation("HORIZONTAL")
  b:SetValue(75)
  b:SetStatusBarTexture("Interface\\TargetingFrame\\UI-StatusBar")
  b:GetStatusBarTexture():SetHorizTile(false)
  b:GetStatusBarTexture():SetVertTile(false)

Just one thing, shouldn't the statusbar range from 0-100 instead of 1-100?

Hey you both :).
Thank you for your answers!

I told you, that I'm really a beginner so I have some questions and maybe, you'll think "omg.." ;).

I've tried to create a frame into my parentframe ( createframe() ) but I have no idea, how to handle it.

Here are my .lua and .xml code, can you please tell me, how I can commit the local frame "SchoolLockStatusBar" into the function SchoolLock_ParseParameters (called at line 13)? :)

Thanks a lot, if you can help me.

PHP Code:




function SchoolLock_OnLoad(this)     
    local b = this.CreateFrame("StatusBar", "SchoolLockStatusBar") 
    b:SetWidth(100); 
    b:SetHeight(20); 
    b:SetPoint("CENTER",UIParent,"CENTER",0 , 0); 
    b:SetMinMaxValues(1,100); 
    b:SetOrientation("HORIZONTAL"); 
    b:SetValue(75); 
    b:SetStatusBarTexture("Interface\\TargetingFrame\\UI-StatusBar"); 
    b:GetStatusBarTexture():SetHorizTile(false); 
    b:GetStatusBarTexture():SetVertTile(false); 
           SLASH_SCHOOLLOCK1="/slock";       
    SlashCmdList["SCHOOLLOCK"]=SchoolLock_ParseParameters; 
     
end 
 
--[[Event Handling]] 
function SchoolLock_OnEvent(this, event, arg1) 
    --Do nothing now 
end 
 
function SchoolLock_ParseParameters(command, bar) 
     
    local cmd = command; 
    local bar = bar; 
     
    cmd=string.lower(cmd); 
     
    if (cmd == 'on') then 
        SchoolLock_showBar(bar); 
         
    elseif (cmd == 'off') then         
        SchoolLock_hideBar(bar); 
         
    else  
        SchoolLock_Message('Befehl ' ..cmd.. ' ist unbekannt..!'); 
     
    end 
end 
 
function SchoolLock_Message(message) 
    DEFAULT_CHAT_FRAME:AddMessage("[SchoolLock] " .. message, 0.7, 0.0, 0.4); 
end --function Message 
 
function SchoolLock_showBar(bar)     
    bar:Show(); 
end 
 
function SchoolLock_hideBar(bar)     
    bar:Hide(); 
end

PHP Code:




<Ui xmlns="http://www.blizzard.com/wow/ui/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.blizzard.com/wow/ui/ ..\FrameXML\UI.xsd"> 
  <Frame name="SchoolLock" parent="UIParent" enableMouse="true"> 
    <Scripts> 
        <OnLoad> 
            SchoolLock_OnLoad(self); 
        </OnLoad> 
        <OnEvent> 
            SchoolLock_OnEvent(self, event, arg1); 
        </OnEvent> 
    </Scripts> 
  </Frame> 
   
</Ui>

CreateFrame() is a function, not a method. See the above example for how to use it properly.

Just want to share these links in addition to Seerah,
in case you don't know what methods are, and why it's not a method

Hey, thank you for your answers and for the links :).

Hmm, do I understand it right, that b is a function that calls another function with name CreateFrame()?

PHP Code:




function Alpha() end

is the same as

PHP Code:




Alpha = function() end

So I have to set two times an end?

Is

PHP Code:




local b = CreateFrame("StatusBar", "SchoolLockStatusBar", SchoolLock)

the right way, to get the statusbar into my mainframe?

At which point in the code do I have to create the statusbar and how can I use the frame in the both functions

PHP Code:




function SchoolLock_showBar()      
    b:Show();  
end  
 
function SchoolLock_hideBar()      
    b:Hide();  
end

I can understand, that it must be hard as a veteran to explain a beginner the simplest things, but I hope you will do it though.

If someone of you have enough time and desire, could you show me how the code have to be, that it works? :rolleyes:
When I have a framework or running example, it would be still easier, to understand, how it works! :)