多边形寓言

Lay out a grid of agents of two types with some empty cells and draw each as a simple shape with a face whose expression reflects happiness. An agent is unhappy if the share of same-type neighbors in its 8-neighborhood falls below a threshold from a slider. Let users drag agents to empty cells, and add a run button that repeatedly moves random unhappy agents to random empty cells. Plot a segregation metric over time in a small line chart beside the grid, and interleave the interactive panels with short narrative paragraphs.