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Add MrGameEng.Pathfinding and MrGameEng.Collisions modules
CI / build-test (push) Failing after 1m5s
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Pathfinding (depends on Core only): GridPathfinder with A* (octile/
Manhattan heuristic), Dijkstra and BFS over a game-implemented
IPathGrid; 4/8 connectivity, diagonals never cut corners. FlowField +
FlowFieldBuilder (multi-source Dijkstra) give crowds O(1) steering per
agent per frame. All buffers are grid-sized once and invalidated by a
generation stamp - repeated queries allocate nothing and clear nothing.

Collisions (Graphics exception: Transform2D, RectF): Collider component
(circle/AABB, offset, two-way layer masks), CollisionWorld - a uniform
spatial hash on flat arrays rebuilt from scratch each tick (O(n) for
movers, zero alloc after warm-up, deterministic pair order), pair
collection, QueryAabb and closest-hit Raycast. scene.UseCollisions()
registers CollisionSystem after movement systems.

30 new tests (string-map mazes, cost weighting, corner cutting, flow
descent; pair/mask/query/raycast). Sample gains a PathfindingScene
('path' console command): click to set the goal, 250 agents follow the
flow field, the A* path is highlighted, colliding agents flash red.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Leonid Pershin
2026-06-11 13:39:28 +03:00
co-authored by Claude Fable 5
parent b3415120c3
commit a395e58458
20 changed files with 2053 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
MrGameEng.sln
+60
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MrGameEng.Collisions", "src\MrGameEng.Collisions\MrGameEng.Collisions.csproj", "{E069CBFD-F4FA-4400-84AE-090F9B81BDFC}"
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MrGameEng.Pathfinding.Tests", "tests\MrGameEng.Pathfinding.Tests\MrGameEng.Pathfinding.Tests.csproj", "{D9FFA22D-0CFF-4A1E-AD56-BA4BD00526B3}"
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