getModData()

[tommysticks]

So, just tryin to get how this works. Here is my code:

local function equippedTimes()	local player = getPlayer();	local primary = player:getPrimaryHandItem();	local pModData = primary:getModData();	pModData.name = "Primary";	print(pModData.name);endEvents.OnEquipPrimary.Add(equippedTimes);

Here is the stack trace I'm getting:

 

-------------------------------------------------------------

attempted index: getModData of non-table: null

-----------------------------------------

STACK TRACE

-----------------------------------------

function: equippedTimes -- file: named weapons.lua line # 26

Callframe at: setPrimaryHandItem

function: perform -- file: ISUnequipAction.lua line # 50

java.lang.RuntimeException: attempted index: getModData of non-table: null

at se.krka.kahlua.vm.KahluaThread.tableget(KahluaThread.java:1544)

at se.krka.kahlua.vm.KahluaThread.luaMainloop(KahluaThread.java:621)

at se.krka.kahlua.vm.KahluaThread.call(KahluaThread.java:162)

at se.krka.kahlua.vm.KahluaThread.pcall(KahluaThread.java:1722)

at se.krka.kahlua.vm.KahluaThread.pcallvoid(KahluaThread.java:1667)

at se.krka.kahlua.integration.LuaCaller.pcallvoid(LuaCaller.java:53)

at se.krka.kahlua.integration.LuaCaller.protectedCallVoid(LuaCaller.java:81)

at zombie.Lua.Event.trigger(Event.java:37)

at zombie.Lua.LuaEventManager.triggerEvent(LuaEventManager.java:112)

at zombie.characters.IsoGameCharacter.setPrimaryHandItem(IsoGameCharacter.java:1577)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606)

at se.krka.kahlua.integration.expose.caller.MethodCaller.call(MethodCaller.java:61)

at se.krka.kahlua.integration.expose.LuaJavaInvoker.call(LuaJavaInvoker.java:199)

at se.krka.kahlua.integration.expose.LuaJavaInvoker.call(LuaJavaInvoker.java:189)

at se.krka.kahlua.vm.KahluaThread.callJava(KahluaThread.java:181)

at se.krka.kahlua.vm.KahluaThread.luaMainloop(KahluaThread.java:981)

at se.krka.kahlua.vm.KahluaThread.call(KahluaThread.java:162)

at se.krka.kahlua.vm.KahluaThread.pcall(KahluaThread.java:1722)

at se.krka.kahlua.vm.KahluaThread.pcall(KahluaThread.java:1637)

at se.krka.kahlua.integration.LuaCaller.pcall(LuaCaller.java:72)

at zombie.characters.CharacterTimedActions.LuaTimedActionNew.perform(LuaTimedActionNew.java:74)

at zombie.characters.IsoGameCharacter.update(IsoGameCharacter.java:8640)

at zombie.characters.IsoPlayer.update(IsoPlayer.java:2678)

at zombie.iso.IsoCell.ProcessObjects(IsoCell.java:1337)

at zombie.iso.IsoCell.update(IsoCell.java:5165)

at zombie.iso.IsoWorld.update(IsoWorld.java:2323)

at zombie.gameStates.IngameState.update(IngameState.java:1193)

at zombie.gameStates.GameStateMachine.update(GameStateMachine.java:101)

at zombie.GameWindow.logic(GameWindow.java:624)

at zombie.GameWindow.run(GameWindow.java:1152)

at zombie.GameWindow.maina(GameWindow.java:977)

at zombie.gameStates.MainScreenState.main(MainScreenState.java:162)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606)

at com.exe4j.runtime.LauncherEngine.launch(Unknown Source)

at com.exe4j.runtime.WinLauncher.main(Unknown Source)

-----------------------------------------

STACK TRACE

-----------------------------------------

function: equippedTimes -- file: named weapons.lua line # 26

Callframe at: setPrimaryHandItem

function: perform -- file: ISUnequipAction.lua line # 50

Am I doing this completely wrong?

 

Trying to set the mod data to primary whenever a weapon is equipped.

[EnigmaGrey]

See what kind of object primary is with print (primary).

 

It doesn't appear to have the function getModData(), even though it should be an item.

 

Some changes with exposed classes have been done for build 32. It's possible this one was mistakenly blocked.

[tommysticks]

See what kind of object primary is with print (primary).

 

It doesn't appear to have the function getModData(), even though it should be an item.

 

Some changes with exposed classes have been done for build 32. It's possible this one was mistakenly blocked.

Primary prints some hex lookin number that I assume is the weapon identifier. It's different for each item and remains the same when an item is re-equipped.

[Brybry]

Pretty sure getPrimaryHandItem() is returning null (because not holding anything) and you're trying to call getModData() on a null object.

 

Try 

local function equippedTimes()	local player = getPlayer();	local primary = player:getPrimaryHandItem();	if primary ~= nil then        	local pModData = primary:getModData();		pModData.name = "Primary";		print(pModData.name);	endend

[tommysticks]

 

Pretty sure getPrimaryHandItem() is returning null (because not holding anything) and you're trying to call getModData() on a null object.

 

Try 

local function equippedTimes()	local player = getPlayer();	local primary = player:getPrimaryHandItem();	if primary ~= nil then        	local pModData = primary:getModData();		pModData.name = "Primary";		print(pModData.name);	endend

Worked like a charm. Thanks.

[tommysticks]

Quick question... I believe I saw somewhere that ModData can't be an integer, is that correct?

[Brybry]

ModData is a lua table. It can't be an integer but you can store an integer in it.