unreal-visual-studio-debugging

unreal-visual-studio-debugging

• this post covers
  • how to debug unreal project using visual studio IDE
• environment
  • Windows / 10
  • Unreal Engine / 4.21.2
  • Visual Studio / 2015 Professional

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pre-task

• finish the tutorial of the document
• now you get the floating object with simple cpp codes

start-new-instance

• open the visual studio project of the unreal project

• close the unreal editor

• right click the game project and select "Debug/Start new instance"
  • be careful whether the project you selected is the game project or the engine project

• now your visual studio entering in debug mode
• and new unreal editor instance is created
  • this editor instance is linked with current debugging session

using-breakpoint

• play the game in the unreal editor
• the actor you made would be floating

• add a breakpoint in "AFloatingActor::Tick()"
• because the "Tick()" function is called each game loop, we should meet the breakpoint

• yeap, we have just met the breakpoint
• then you can look up the local variable

• perfect, they are the same value
• you can debug the unreal project like this way

caution

• the constructor is not actually called when the instance of the class is created

• so wanting stop the program exactly when the instance of the class is created, you should add a breakpoint in "BeginPlay()"