Active peds: 0
Active cars: 0
Attractors: 0
Parking: 0
Outfalls: 0
Flood cells: 0
Tick: 0
Initialising...
HOOD PARK / BHCC SIMULATION
What it shows: Agent-based movement model of pedestrians and cars in Charlestown's Hood Park and BHCC zone. Particles navigate an OSM road graph toward building attractors weighted by type and time of day.
EVERYDAY mode: Agents spawn at Sullivan Square (Orange Line), Community College station, and Rutherford Ave / I-93. Buildings pull agents by type — university/college strongest. During rush hours (7–9 AM, 4–6 PM), road intersections become the attractors.
FLOOD mode: 4m/cell Eulerian grid simulates precipitation and storm surge routed by terrain slope and surface impermeability. Water flows toward stormwater outfalls. Press Play before switching to Flood.
Time scrub: Drag the speed slider (×) to accelerate simulation time. Rush-hour windows shift agent destinations to road throughput nodes.
Draw Zone: Click "Draw Zone," click vertices on the map, double-click to close. Set a weight multiplier (0.5–5×) to amplify attractor strength in that area.
Path Dependence: The glow on building attractors accumulates as pedestrians visit — busier destinations glow brighter. Resets on each refresh. Dwell time is a countdown timer at the agent's destination node; it is not spatially bounded to drawn attractor zones.
Layers: Toggle Path Dependence (OSM building attractors), Boston GIS buildings, outfalls, flood grid, and roads independently.