This Tutorial is using UDK Beta March 2012

Basic  Mesh

Startout with creating a Simple Level (floor, Playerstart and Light)

1. Open the Content Browser (Ctrl-Shift-F)
2. Search for “door” (load All Assets)
3. Place S_LT_Doors_SM_Door04 as Static Mesh into the Level
4. Place S_LT_Doors_SM_DoorWay04 as InterpActor into the Level
5. With F4 Open the Properties for the Actors, make sure that both objects are at the same Position
6. For the InterpActor, you have to navigate to Collisions and set it to “Collide_BlockAll”
7. Add a Trigger (RMB > Add Actor > Trigger) and place it in the Center of the Door
8. With F4 Open the Properties and Adjust the Collision Height to 60, Collision Radius to 100

Kismet

1. Open Kismet
2. With the Trigger selected RMB > New Event Using <Trigger> > Touch
3. Set the “Max Trigger Count” to 0 (infinite)
4. Create a new Matinee (RMB > new Matinee)
5. Connect from the Trigger Touched to Play and Untouched to Reverse
6. In the Worldview select the Door (not the Frame) and Doubleclick on the Matinee (this opens Matinee)

Matinee

1. RMB on the Middlepart and select “Add New Empty Group” name it “door”
2. RMB on the created Group and create “a new Movement Track”
3. RMB on the new Movement Track and ensure that “Relative to Initial” is activated
4. LMB on the Movement Track and press Enter to create a Keyframe (If an error occurs, open Kismet, and check if the InterpActor is connected to the door attribute of the Matinee Sequence. If not, select the door, RMB in Matinee > “New Object Var using InterpActor1” and connect it to the Matinee Node)
5. In the Timeline go to 1.00s, in the Editor View move the Door 200units down and press Enter.
6. On the top Toolbar you can preview your Animation by pressing play or Loop Selection.
7. Go to 5.00s in the Timeline, you should see a red Triangle (This defines the length of the Matinee sequence), RMB on it and select “Move to Longest Track Endpoint”

Creating an Prefab

1. First Test if everything works properly
2. Select in the Editor the Frame, the Door, and the Trigger
3. RMB > Create Prefab
4. Select the right Package, Group it accordingly and Give it a good Name like Door_Type1_01
5. A Message appears click Yes (Make Sequence part of Prefab)
6. A Message appears “replace Actors with the new Prefab?”  click No (easier to fix problems if some error occurs)

Testing

Open the Contentbrowser, navigate to the newly created Prefab and place it into the scene.

If you walk over to the door it should open

Voila a reusable Door