Formation systems are useful whenever a group of units needs to move and stay visually organized instead of behaving like a collection of unrelated agents. In Unity, the problem becomes more interesting when the formation must change at runtime, follow a target, move along a path, or transition between layouts.
What is a formation system in Unity?
A formation system maps a group of units to a set of positions and keeps those positions meaningful as the group moves. A simple implementation might assign units to a fixed grid. A more flexible system can generate layouts procedurally and apply movement or behaviour rules on top of them.
Why use procedural formations?
Procedural generation avoids authoring every possible arrangement by hand. Instead, the system can calculate positions from parameters such as unit count, spacing, radius, direction, or a source path. This makes the same system useful for different squad sizes and gameplay situations.
Common formation types
Useful layouts include circles, arcs, grids, hex grids, rings, spirals, stars, walls, wedges, V shapes, paths and custom positions. The right layout depends on the gameplay: a wedge can work for an advancing squad, a wall can create a readable defensive line, and a ring can surround a target.
Moving the formation
Once positions are generated, movement should be treated separately from layout generation. The formation can follow a leader or target, move through waypoints, or use group steering so individual units react to neighbours while still respecting their assigned formation positions.
Formation behaviours
Layering behaviours makes the system more reusable. Rotation, pulse, phase shifts, organic noise, flow noise, vortex motion, cluster splitting and morphing can change how a formation looks without requiring a completely new formation generator.
Formation morphing
A useful runtime feature is transitioning from one layout to another instead of instantly teleporting units. Interpolating between corresponding positions can turn a grid into a circle, a wall into a wedge, or one tactical arrangement into another while the group remains readable.
Using formations in RTS and tactical games
RTS units often need formations that remain stable while the player changes direction or destination. Tactical games may need more deliberate squad layouts. In both cases, the formation system should expose enough control over spacing, orientation and movement to let gameplay code decide what the group is trying to do.
Editor preview and runtime tools
Editor previews are valuable because developers can inspect a formation before entering Play Mode. Runtime tools are useful for testing different unit counts, layouts and behaviours quickly. Together they reduce iteration time when tuning formation-based gameplay.
Dynamic Formation System for Unity
RomaSoft's Dynamic Formation System follows this separation: it provides procedural formation generation, runtime behaviour stacks, formation morphing, path and waypoint movement, boids-style group movement, editor previews and an interactive demo browser. The package includes 17 formation types and 15 behaviour assets for building and testing group movement workflows.
Conclusion
A good Unity formation system is more than a list of positions. Separating layout generation from movement and behaviour lets the same foundation support different unit counts, gameplay styles and visual effects. Start with a small set of layouts, keep movement independent, and add runtime behaviours only where they improve the result.