Mapping For Games

1. Mapping For Games UDK Material EditorNode CookbookPart 2

2. Window Package Homework • Please pull up your Window Assignments • I’ll be going around and checking each one based on the following criteria:- New Package with a Window Materialapplied to something - Material Utilizes unique photographs- Material has High Quality “Depth” illusion- Attention to Detail

3. Introduction • Today we’ll be going over: 1 ) A handful of new, but very powerful nodes. 2 ) A new recipe for how to make a flickering TV Screen 3 ) How to use multiple UV sets 4 ) How to make modular rubble using prefabs 5) Your Midterm Assignment

4. Sin Node

5. Time Node

6. De-saturation Node

7. Emissive vs. Diffuse Channel

8. Texture Coordinate Node • Index Coordinate: Determines which UV set to use when applying this material.

9. Flickering TV Recipe

10. TV Recipe (Part 1)-

11. Sin – Time Function

12. Static Snow

13. Scan Lines

14. Static Intensity

15. UV Set Correction

16. Combine Snow & Scanlines

17. Emissive Flicker

18. Creating multiple UV Sets in Maya • Create a single UV set for everything in the object • Select the faces you want to move into a new UV Set. • Polygon>Copy UVs to new UV Set • Select the remaining faces • Polygon>Copy UVs to new UV Set • You should now have • A UV Set containing Everything (disregard this) • A UV Set containing Part 1 • A UV Set containing Part 2

19. Meshes with Multiple Materials • 1. Create a Mesh that uses Multiple UV sets. • 2. After each set has been made, apply a unique material to each face that shares a UV set. • 3. Select all the faces using each material, and copy their UVs to seporate UV sheets. • 4. In UDK, the object will have two material channels, each corresponding to a different UV set, allowing multiple materials to be placed on a single mesh.

20. Multi – UV set Construction <CREATING MULTI-UV SETS FOR TV MESH DEMO >

21. Modular Rubble

22. Modular Rubble (Pieces) • Each piece was created separately and UV wrapped Separately. Each has a unique material applied to it. • The Meshes were then Combined using Mesh>Combine Mesh • The objects retain their UV maps, and can be textured and Material’d seporatly.

23. Rubble Pile Static Mesh • Note the Number of material Channels corresponding to the number of objects in the rubble pile. Each will have their own material.

24. Rubble Pile after Materials plugged back in:

25. Rubble and Level Design • Rubble and other static meshes like it are used to break up right-angles, and to create a more lived-in, and organic feel to an environment. • However, if all rubble piles look the same then all your efforts to create variance will be for not.

26. Rubble Placement example 1 • Notice how you can clearly see a hard, right-angle edge along the wall. The rubble does nothing to hide that.

27. Rubble Placement example 2 • Notice here, how all the rubble does block the right-angle, but the rubble has been repeated so precisely, it looks equally bad.

28. Rubble Placement 3 • Here we see a fair example, where the rubble is placed and turned to create variation. However, upon close inspection, you’ll notice each pile is the same, just turned.

29. Prefabs • Unreal Prefabs allow you to combine multiple static meshes into singular objects which can be easily moved around and adjusted. One UDK Prefab Four Separate Objects

30. Creating Prefabs • Place each piece in the level as you would any other static mesh. • Adjust pieces to your liking. • Select all of the pieces (making sure not to select the ground or the sky) • Right Click > Create Prefab… • Select a Package, and give the prefab a name. • Optional: Replace the collection of Meshes with an instance of the prefab.

31. Creating Prefabs (Screen shots)

32. Reverting Prefabs • If you want to break a prefab down into it’s pieces again: • Right Click > Convert to normal Actors. • This allows you to adjust the pieces of a prefab, and then re-convert it back to a different or new prefab object.

33. Prefab Examples and Rubble Piles <Prefab Rubble Pile Example>

34. Rubble Placement Example 3 • Notice Each Rubble pile is rotated different, and there are multiple prefab-instances of different rubble piles. • Minimal monotony and maximum variance = Good asset / environment creation

35. Midterm Assignment Assignment: Create a Base Material, and three or more Material Instances for a single high poly (1,500+ polygon) mesh. Place four copies of the mesh into the environment, each using either the Base Material, or one of the Instance Materials. • You may use your own mesh or a mesh you downloaded of the internet an unwrapped your self. • You may NOT use Epic’s meshes, or any mesh that already has a UV set applied to it.

36. Midterm Step-by-Step Instructions • Find / Create a high-poly (1.5k poly) Mesh • Create UV Set(s) • Import into UDK • Create Base Material • Create 3 unique Material Instances • Place four copies of Mesh into Level • Assign one mesh the Base Material • Assign three other meshes a Material Instance • Bake Lights • Save Map and Package to turn in next week.

37. Midterm Grading Criteria (PASS/FAIL) Model is 1,500 polygons or more and is of high quality and interesting (no 1,500 poly Cubes) (PASS/FAIL)UV Un-wrapping done by Student, not already done by mesh’s original artist. (if mesh downloaded from internet) (10pts) Base Material utilizes ALL of the following nodes: - Texture Sample - Multiply - Texture Coordinate- 3 or more Parameter NodesAND, Base Material utilizes TWO of the following nodes: - Linear Interpolate (Lerp) - Panner or Rotator - Clamp- Power - Sin or Time (10pts.) Three or more Material Instances using a Base Material with appropriate and well-named functional parameters, each applied to a mesh. (5pts.) Model and Materials (both Base and Instances) look unique from each other but still look appropriate to the original Mesh.

38. GOOD LUCK!!! (Questions? Comments? Concerns?)