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Level Streaming. Sai -Keung Wong Chiao Tung University, Taiwan, R.O.C. Reference: Mastering Unreal Technology (MUT). Contents. Level streaming. Game Levels. Load all the levels at the beginning of the game ? Resources ? Scene computation ?. Level Steaming: Concept. New levels. - PowerPoint PPT Presentation
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Level Streaming
Sai-Keung WongChiao Tung University, Taiwan, R.O.C.
Reference: Mastering Unreal Technology (MUT)
Contents
• Level streaming
Game Levels
• Load all the levels at the beginning of the game ?
• Resources ?• Scene computation ?
Level Steaming: Concept
New levels
New levels
• One persistent level• 2 kismet levels• 2 always loaded • 2 distance
Levels
• Stream kismet 01
persistent level
All levels
Level arrangement
PersistentKismet 01 Kismet 01
Distance 05 Distance 05
Always 03
Kismet 02 Kismet 02Always 03
Distance 06 Distance 06
Always 04
Always 04
Level control• In level manager, right click on a level
Level control• In level manager, right click on a level
World Info: Streaming Levels
Level: Distance
• Max Distance• If the player distance is <= Max Distance, load
the level• Distance = distance(player position, origin)
Level arrangement
PersistentKismet 01 Kismet 01
Distance 05 Distance 05
Always 03
Kismet 02 Kismet 02Always 03
Distance 06 Distance 06
Always 04
Always 04
Position (-1310, 22, 140)
Level: Distance
• Change origin and max distance.• Use a reference object to obtain the origin
Level: Distance
• Save and test
Walk further….
The level disappears.Solve the problem!
Level Distance
originLevel visible
Level invisible/not loaded
If distance (player, origin), load the invisible level.
Level: Distance
• Origin• Offset• Should be visible?• Locked?• Is fully static?• Editor streaming• Object name
Level: Kismet
• World Info
Method One: Using a trigger to load the levelLevel : Kismet
• Add a touch trigger to load the level• Add action “Stream levels”– Set level name: the level should be loaded– E.g. stream_kismet_01
• Add “commit map change”
Action->level->Stream Levels
Method One: Using a trigger to load the levelLevel : Kismet
• Save and test.• Touch the “touch trigger”• Level not loaded!!!
Method One: Using trigger to load the levelLevel : Kismet
• To solve the problem, copy the level to:• C:\UDK\UDK-2010-02\UTGame\Content\Maps• It is the directory of the UDK maps. If you
install it to a different path, find it out.• Copy all the levels to the folder:
Unreal Frontend
• Use UnrealFrontEnd to launch the persistent level.
• Still don’t work!!!!• Remember, what we need is to place a “player
start” at the persistent level. Save and test.
Method One: Using trigger to load the levelLevel : Kismet
• Touch the trigger.• Stream_kismet_01
loaded and visible!
Before touching the trigger After touching the trigger
Streaming VolumeSet Streaming level : Kismet level
• Add a streaming volume
Streaming VolumeSet Streaming level : Kismet level
• In level manager
Level: Always loaded
• World Info
