How to export map from TrenchBroom to Unity3D (Converting Quake .MAP to .FBX)

This video shows complete process how I export my quake maps to use them in modern engines like Unity3D or others. Unreal Engine has BSP import tool (HammUEr) and Godot takes too long to load model and may crash. Quake 1 / Half-life / Counter-Strike 1.6 / Quake 3 Maps to Unity. There are guys on the internet who suggest compiling BSP and converting it to a model using some external tools. They say it removes "unwanted" faces. In reality BSP compilers do remove backfaces but also create thousands of vertices and faces. You can check it by running quake in wireframe mode or decompiling any map. BSP compilers also have limits and bounds so do not use their advice unless absolutely necessary. It is much more easy to remove backfaces by going into top view in Blender, disabling xray and shift click removing. Python script for combining brushes: import bpy lastName = "" scene = bpy.context.scene texturesToSkip = ["clip", "*water1", "sky1", "lampbulb", "crate01", "crate02", "crate03", "box01", "box02", "box03", "box04", "box05", "crate1", "crate2"] for obj in scene.objects: if obj.type == 'MESH': temp = obj.name.split("_") if(temp[0] == lastName): print("Merge ", lastName, " with ", obj.name) mesh = obj.data skip = False for f in mesh.polygons: # iterate over faces slot = obj.material_slots[f.material_index] mat = slot.material if mat is not None: if(mat.name in texturesToSkip): if(temp[0] == "entity0"): skip = True if(skip == False): obj.select_set(True) print(bpy.context.selected_objects) bpy.ops.object.join() else: print("Now joining ", temp[0]) bpy.ops.object.select_all(action='DESELECT') lastName = temp[0] bpy.context.view_layer.objects.active = obj obj.select_set(True)