Hello,
I wanted to report an issue with the external cargo and event handler that I discovered while working on a game mode and some related lua code.
This error occurs when a piece of external cargo is lifted and then destroyed, by either being dropped or damaged mid-air. When this situation occurs, and an instance of the event handler has been called in the mission, the following error is prompted:
[string "..."]:10: attempt to call method 'getName' (a nil value)
stack traceback:
[C]: in function 'getName'
[string "..."]:10: in function 'onEvent'
[string "Scripts/World/EventHandlers.lua"]:13: in function <[string "Scripts/World/EventHandlers.lua"]:11>
null
null
I have also seen this error in the forementioned game mode be prompted with a getPosition or getPlayerName call; but always occurred when the external cargo was picked up and then destroyed.
I have slimed the conditions of the error down to its most basic state, involving an external-cargo capable helicopter (in this case a CH-47), a piece of external cargo (in this case a small ISO container), and a 'Do Script' trigger calling the event handler, in the attached mission file.
I have also attached my DCS log for the instance and a video of the error occurring with this mission: https://youtu.be/Jlano9twZQ0
(Please excuse the delay in hooking the cargo, it's more stressful when recording )
Lastly, here is the event handler code I used in the mission. For simplicity's sake, it is a slightly modified version of the event handler code found on the DCS hoggitworld wiki here: DCS func addEventHandler - DCS World Wiki - Hoggitworld.com
Code:
local e = {}
function e:onEvent(event)
local m = {}
m[#m+1] = "Event ID: "
m[#m+1] = event.id
if event.initiator then
m[#m+1] = "\nInitiator : "
m[#m+1] = event.initiator:getName()
end
if event.weapon then
m[#m+1] = "\nWeapon : "
m[#m+1] = event.weapon :getTypeName()
end
if event.target then
m[#m+1] = "\nTarget : "
m[#m+1] = event.target :getName()
end
if event.id == 30 then
m[#m+1] = "idx "
m[#m+1] = event.idx
end
trigger.action.outText(table.concat(m), 10)
end
world.addEventHandler(e)
As a closing remark, I am quite new to Lua coding. As such, when this error began occurring, I did believe it to be a mistake from myself; especially given the complexity of my game modes code. However, after doing an extensive amount of testing, I became more confident in the idea this may be an actual bug. I look forward to learning more about the issue and hearing other's thoughts.
Thanks!
EventCrash.miz dcs.log
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Hello, I wanted to report an issue with the external cargo and event handler that I discovered while working on a game mode and some related lua code. This error occurs when a piece of external cargo is lifted and then destroyed, by either being dropped or damaged mid-air. When this situation occurs, and an instance of the event handler has been called in the mission, the following error is prompted: [string "..."]:10: attempt to call method 'getName' (a nil value) stack traceback: [C]: in function 'getName' [string "..."]:10: in function 'onEvent' [string "Scripts/World/EventHandlers.lua"]:13: in function <[string "Scripts/World/EventHandlers.lua"]:11> null null I have also seen this error in the forementioned game mode be prompted with a getPosition or getPlayerName call; but always occurred when the external cargo was picked up and then destroyed. I have slimed the conditions of the error down to its most basic state, involving an external-cargo capable helicopter (in this case a CH-47), a piece of external cargo (in this case a small ISO container), and a 'Do Script' trigger calling the event handler, in the attached mission file. I have also attached my DCS log for the instance and a video of the error occurring with this mission: https://youtu.be/Jlano9twZQ0 (Please excuse the delay in hooking the cargo, it's more stressful when recording ) Lastly, here is the event handler code I used in the mission. For simplicity's sake, it is a slightly modified version of the event handler code found on the DCS hoggitworld wiki here: DCS func addEventHandler - DCS World Wiki - Hoggitworld.com Code: local e = {} function e:onEvent(event) local m = {} m[#m+1] = "Event ID: " m[#m+1] = event.id if event.initiator then m[#m+1] = "\nInitiator : " m[#m+1] = event.initiator:getName() end if event.weapon then m[#m+1] = "\nWeapon : " m[#m+1] = event.weapon :getTypeName() end if event.target then m[#m+1] = "\nTarget : " m[#m+1] = event.target :getName() end if event.id == 30 then m[#m+1] = "idx " m[#m+1] = event.idx end trigger.action.outText(table.concat(m), 10) end world.addEventHandler(e) As a closing remark, I am quite new to Lua coding. As such, when this error began occurring, I did believe it to be a mistake from myself; especially given the complexity of my game modes code. However, after doing an extensive amount of testing, I became more confident in the idea this may be an actual bug. I look forward to learning more about the issue and hearing other's thoughts. Thanks! EventCrash.miz dcs.log
