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Efficient Level Merging Methods for Unreal Development Kit

Learn how to merge existing levels in UDK using two methods: merging and copy-paste rebuild. Follow step-by-step instructions to seamlessly combine levels, manage memory size, and handle missing polygons. Explore tips to solve common issues and optimize your merged levels for a smooth gameplay experience. Use at your own risk and enjoy the process of level creation in UDK.

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Efficient Level Merging Methods for Unreal Development Kit

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  1. Merging Existing Levels Sai-Keung Wong Chiao Tung University, Taiwan, R.O.C. UDK. Version Feb. 2010

  2. Contents • Merging existing levels • Method One, use level manager. • Merge • Method Two, use level manager. • Copy and Paste, Rebuild

  3. Method One: Merging • Load the levels that you want to merge first. • For example, the following levels: • MU_L01 • MU_L02 • MU_L03 • Then, load them one by one first. • File->Open • After opening one, close it and open another.

  4. Method One: Merging • Content-Browser->Level Manager

  5. Method One: Merging • Content->Browser->Level Manager->Add existing level

  6. Method One: Merging • StreamingMethod: Kismet

  7. Method One: Merging • Check LevelMemorySize/Data

  8. Method One: Merging • Simply merging the levels, the BSP planes disappear, remaining only the static meshes. • Kismet sequences may be disappeared.

  9. Method Two: Copy and Paste, Rebuild • Repeat the same thing as Method One requires but do not merge.

  10. (1) (2) (2) (1)

  11. Method Two: Copy and Paste, Rebuild • Now set a level as visible and the others are invisible.

  12. Method Two: Copy and Paste, Rebuild • In level editor, select all

  13. Method Two: Copy and Paste, Rebuild • Copy and paste to the “target” level.

  14. Method Two: Copy and Paste, Rebuild • Save and load the newly created map (level). • The newly added BSPs disappear. • Retry to build geometry. No Help.

  15. Method Two: Copy and Paste, Rebuild • To solve the problem • Select the yellow brush (missed polygons) • Right click • (on the yellow brush) ->Polygons->to Brush

  16. Method Two: Copy and Paste, Rebuild • After click “to brush”. • Now, click “CSG subtract” or “CSG add” based on the type of the original brush. Note: yellow: subtract; blue: add

  17. Method Two: Copy and Paste, Rebuild • So, convert all brushes, which miss polygons, into red brushes • click CSG Add or CSG Subtract based on their original types.

  18. Method Two: Copy and Paste, Rebuild

  19. Method Two: Copy and Paste, Rebuild

  20. Method Two: Copy and Paste, Rebuild • Save and test. • Kismet sequences and Matinee sequences may disappear. • Use the methods at your own risk. • Enjoy.

  21. Summary • Merging existing levels. • Two methods. • The Third Method? Think about it.

  22. Level loaded from another level • In the start level, add a Kismet sequence: • (New action->level-> ……)_ Check “Is HighPriority” Enter the level name for being loaded

  23. Level loaded from another level • In another level which is being loaded, • add the following Kismet sequence:

  24. Level loaded from another level • Use UnrealFrontEnd to test the program. • Your udk files may need to place in: • C:\UDK\UDK-2010-02\UTGame\Content\Maps

  25. Level loaded from another level Defined in another level.

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