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< HPL2‎ | TDD
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This page lists the effects available in HPL2. They can be added both to a map in the Level Editor and to an Entity in the Model Editor.



OGG files are the recommended file format for HPL2. Music can be played from such a file without any additional steps. Other sounds need to have a config file (.snt) which will define its behaviour in 3D space. Quite often one sound randomises between multiple .ogg files.


Billboards are 2D objects in 3D space which (at least in HPL2) mostly simulate light effects.

Particle Systems

Effects like smoke, sparks, blood and fire. Particle systems are made using the Particle Editor.