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grid-based-building-system

Implements grid-based placement with snapping, collision, rotation, and cost validation for Unity 6+.

71|11|Updated Jan 23, 2026
Search Tags:#game development#unity#placement#rts#grid system#city builder
One-click install
npx skills add https://github.com/nlelouche/Unity-SkillForge --skill grid-based-building-system
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: grid-based-building-system
Source: https://github.com/nlelouche/Unity-SkillForge/tree/main/.agent/skills/03-simulation-strategy/grid-based-building-system
Command: npx skills add https://github.com/nlelouche/Unity-SkillForge --skill grid-based-building-system

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and templates (resource) components.

What problem does it solve?

This Skill provides a robust system for placing objects on a grid, handling common issues like snapping, collision detection, rotation, and cost validation, essential for games like city builders and RTS titles.

Core Features & Use Cases

  • Grid Snapping: Accurately aligns placed objects to a defined grid.
  • Collision Detection: Prevents overlapping objects and ensures valid placement areas.
  • Rotation: Allows players to rotate objects before placement.
  • Cost Validation: Checks if the player has sufficient resources before allowing placement.
  • Use Case: In a city-building game, players can use this system to place houses, roads, and other structures on a grid, ensuring they don't overlap and fit within the game's rules.

Quick Start

Use the grid-based-building-system skill to place a 'Tower' prefab on the grid.

Frequently Asked Questions about grid-based-building-system

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I implement grid snapping and collision detection for building placement in Unity?▼

Grid snapping and collision detection for Unity building placement are implemented by calculating discrete grid coordinates from world positions. This system prevents overlapping objects and aligns placed structures accurately to a defined grid.

Does this Unity grid placement system handle rotation and resource cost validation?▼

Yes, the Unity grid placement system handles rotation and resource cost validation. It allows players to rotate objects before placement and checks if sufficient resources are available before permitting the build.

Can I use this grid building system for an RTS game or a tile-based editor?▼

Yes, you can use this grid building system for RTS games and tile-based editors. It supports discrete grid coordinate calculation from world positions, making it suitable for any grid-based game logic requiring snapping and collision checks.

What Unity version is required for zero GC allocation in grid placement hot paths?▼

Unity 6+ is required for this grid placement system, which handles any render pipeline. It achieves a performance target of zero garbage collection allocation in hot paths during building placement operations.

What is the best way to prevent overlapping objects when placing buildings on a grid?▼

The best way to prevent overlapping objects during grid placement is using a dedicated collision detection system. This system calculates discrete grid coordinates from world positions to ensure structures fit within defined game rules.

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