Blueprint Node Compiling Options

Streamline your Blueprint debugging endeavors by enabling the Allow Explicit Impure Node Disabling options found within the Editor Properties.

By doing so, you’ll gain access to three useful compiling options —

Always Compile

Setting an impure Blueprint function to the Always Compile option will ensure that it will compile regardless of it being a shipping build, a development build, or in-editor. This is the default option that all custom Blueprint functions, and the majority of built-in engine functions, are set to.

This option is ideal when the function should always execute.

Development Only

Setting an impure Blueprint function to the Development Only option will ensure that the function will only compile while in-editor or in a development only build.

This option is ideal for debugging as it’ll automatically strip the functions out of shipping builds.

Disabled

Setting an impure Blueprint function to the Disabled option will make it so the function isn’t compiled and it’s execution will be skipped.

This option is ideal for disabling certain functions when attempting to debug an issue in a Blueprint. Do not use this option for disabling, leaving in, and forgetting about a function.

Changing the impure functions compile state

Right-click on any impure Blueprint function to reveal it’s action menu. Within the menu, locate the “Compile Options’ section. From here, select the desired option.

Setting up the impure functions compile state shortcuts

Shortcuts can be setup within the Editor Preferences to speed up the changing of the different compile states. Instead of right-clicking and setting the desired state, you can press the shortcuts you have designated.

Conclusion

While this option is experimental, it plays a tremendous role in Blueprint debugging and custom Unreal Engine Editor Utilities and tools.

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