tips:gameengine:unreal [Galileo Labs]

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====== Unreal ======

===== Build from sources =====

Register and access to:
  * nvidia developer account 
  * Epic Games account
  * github account

On first two accounts bind github account.

Two branches:
  * [[https://github.com/NvPhysX/UnrealEngine|Unreal with flex]]
  * [[https://github.com/EpicGames/UnrealEngine|Unreal]]


Prereq
<code bash>
sudo apt-get install build-essential mono-gmcs mono-xbuild mono-dmcs libmono-corlib4.0-cil \
 libmono-system-data-datasetextensions4.0-cil  libmono-system-web-extensions4.0-cil \
 libmono-system-management4.0-cil libmono-system-xml-linq4.0-cil \
 cmake dos2unix clang-3.5 xdg-user-dirs

sudo ln -s /usr/bin/clang++-3.5 /usr/bin/clang++
sudo ln -s /usr/bin/clang-3.5 /usr/bin/clang
</code>

First time
<code bash>
# clone
git clone https://github.com/NvPhysX/UnrealEngine.git

# complete download of dependencies and binaries
cd UnrealEngine
./Setup.sh
./GenerateProjectFiles.sh
</code>

build editor
<code bash>
make ShaderCompileWorker UnrealLightmass UnrealPak CrashReportClient UE4Editor
</code>

To running editor an IDE must be present, Epic wants kdevelop but it is possible to use [[https://wiki.unrealengine.com/Linux_Known_Issues|others]].

For example configure vim IDE for C++ editor mode: 
1) clone
<code>
cd Engine/Plugins/Developer
git clone https://github.com/fire/SensibleEditorSourceCodeAccess.git
</code>

2) edit '''Engine/Config/Linux/LinuxEngine.ini'''
<code>
[/Script/SourceCodeAccess.SourceCodeAccessSettings]
PreferredAccessor=SensibleEditorSourceCodeAccessor
</code>

run editor
<code>
Engine/Binaries/Linux/UE4Editor
</code>

===== Kdevelop =====

Import project selecting **CMakeLists.txt**