How to Make a Building Placement System
Advanced 12 min Advanced
Ghost-preview placement with grid snapping, rotation and server-side validation.
Skip the typing
Generate the whole system, every file wired up. Free during beta.
How it works, step by step
- 1
Ghost model follows mouse via raycast; snap to grid cell math on the client.
- 2
Rotation on R rotates 90°; validity preview tints ghost green/red from local checks.
- 3
PlaceRequest sends cell coordinates + rotation + building id — never raw CFrame trust.
- 4
Server re-validates: cell free, funds sufficient, adjacency rules; then materializes authoritatively.
- 5
Persistence layer saves placed buildings per plot for reload reconstruction.
Concepts you'll use
- Cell-coordinate protocol
- Local preview / server truth
- Plot serialization
Mistakes that cost you players
- Accepting CFrames lets players overlap or wall-bury buildings arbitrarily.
- Skipping persistence makes every server restart erase entire bases.
Every script above — written, placed & wired in ~30 seconds
Build it free 🔥no card · full access in beta
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