Home▸Physics & Mechanics▸Emergency Evacuation: 2D Social-Force Crowd Model

🚨 Emergency Evacuation: 2D Social-Force Crowd Model

Top-down 2D evacuation model using the Helbing social-force equations: people flee through draggable exits, jam into arches at high desired speed, and reroute around spreading fires. Place fires by clicking, block exits, add a pillar and track flow, density and crowd pressure live.

Physics & Mechanics2DModerate60 FPS📱 Mobile-adapted⇄ 3D version

Details

CategoryPhysics & Mechanics

RenderingCanvas 2D

DifficultyModerate

Target FPS60

ControlsSliders for crowd size, desired speed, exit widths, fire spread rate, maximum fire radius, injury rate and time scale; toggles for a second exit, a pillar and blocked exits; click the floor to ignite a fire and drag exits and the pillar.

evacuationcrowd dynamicssocial force modelemergency responsefire safetypedestrian flow

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⚙ Under the hood

evacuationcrowd dynamicssocial force modelemergency responsefire safetypedestrian flow

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install