Add behavior modular

source/Model/Behavior.ts

@@ -0,0 +1,50 @@
+import { IAnyObject } from "./Renderer";
+import { Emitter, EventType } from "./Emitter";
+import type { Individual } from "./Individual";
+import type { Group } from "./Group";
+
+/**
+ * 群体的某种行为
+ */
+abstract class Behavior<
+    P extends IAnyObject, E extends Record<EventType, any>
+> extends Emitter<E> {
+
+    /**
+     * 行为 ID
+     */
+    abstract id: string;
+    
+    /**
+     * 行为名称
+     */
+    abstract name: string;
+
+    /**
+     * 行为描述
+     */
+    public describe?: string = "";
+
+    /**
+     * 优先级
+     * 值越大执行顺序越靠后
+     */
+    public priority?: number = 0;
+
+    /**
+     * 行为参数
+     */
+    abstract parameter?: P;
+
+    /**
+     * 作用影响于个体
+     * @param individual 影响个体
+     * @param group 影响组
+     * @param t 经过时间
+     */
+    abstract effect(individual: Individual, group: Group, t: number): void;
+
+}
+
+export { Behavior };
+export default { Behavior };