Merge Maps

Merge two or more BSP maps into a single BSP file by combining their geometry, entities, and shaders. Each map can be translated (offset) in 3D space before merging so that rooms don't overlap. Use this to: • Combine two existing maps side-by-side (e.g. campgrounds + aerowalk) • Stack maps vertically for multi-level play • Create hybrid maps by mixing parts of different levels The first map in the list is the 'base' — its worldspawn settings (sky, gravity, music) take priority. All entities from every map are preserved. Shaders are deduplicated by name. The output BSP uses a simple all-visible PVS (no real cluster culling), which is fine for demo playback but means every surface is always rendered. Translate tip: to place map B 2000 units to the right of map A, set translate=[2000,0,0] for map B. Use get_bsp_info to find the bounding box of each map so you can compute non-overlapping placements.