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<aside> 💡 Blob Object is a physics support object for tree models used in AI interactions. It is a mesh that covers the tree foliage; AI cannot see through these blobs, but projectiles can still pass through them and deal normal damage.

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Create blob mesh from tree model in blender

The steps below will guide you on how to create a corresponding Blob Object for a tree model

• In Titan Engine Editor, find the tree object > right-click > Export > Choose the file save location
• Import the obj file into Blender > Switch to Edit mode (Tab) > Select all vertices (A) > Merge (M) > By Distance
• Select the entire mesh of the tree trunk and delete it

• Switch to Object Mode > Duplicate the foliage mesh (For easier comparison in the next step

• Add Modifier Remesh > Select the Voxel tab > Set Adaptivity = 0 > Adjust the Voxel size value so that the mesh covers the foliage mesh relatively well before copying. It doesn't need to be completely covered!

• Add Modifier Decimate > Select the Collapse tab > Adjust the Ratio parameter to reduce the mesh for the Blob object
• Reducing the mesh for the blob will help reduce data when using the Static mesh physic shape in the following steps

<aside> 💡 Trong blender, để tạo Blob Object cho nhiều cây bạn có thể tiết kiệm thời gian bằng cách chọn đối tượng cần copy > Tiếp đó chọn đối tượng chứa modifier cần copy (active object). Ctrl + L > Copy Modifiers

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• Go to File > Export > FBX > Select Limit to Selected Objects > Save the file to the hard drive with a name like mytree-blob.fbx

Import and config blob mesh in Engine

• Drag and drop the exported file into the Engine (You can arrange it as a child of the tree object)

• Open the blob object you just imported > go to the Params tab > set Class = OBJ_NAVMESH_BLOCKER > go to the Physics tab > select Static Mesh.

• Open the tree model > in the Params tab > drag the blob object into the blob objectslot.

• Double-check that the blob object reasonably covers the tree's foliage mesh.