122 lines
3.8 KiB
TypeScript
122 lines
3.8 KiB
TypeScript
import { Behavior } from "@Model/Behavior";
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import Group from "@Model/Group";
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import Individual from "@Model/Individual";
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import { Model } from "@Model/Model";
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type IDynamicsBehaviorParameter = {
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mass: "number",
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maxAcceleration: "number",
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maxVelocity: "number",
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resistance: "number"
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}
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type IDynamicsBehaviorEvent = {}
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class Dynamics extends Behavior<IDynamicsBehaviorParameter, IDynamicsBehaviorEvent> {
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public override behaviorId: string = "Dynamics";
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public override behaviorName: string = "$Title";
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public override iconName: string = "Running";
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public override describe: string = "$Intro";
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public override category: string = "$Physics";
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public override parameterOption = {
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mass: {
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name: "$Mass",
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type: "number",
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defaultValue: 1,
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numberStep: .01,
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numberMin: .001
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},
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maxAcceleration: {
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name: "$Max.Acceleration",
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type: "number",
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defaultValue: 0.5,
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numberStep: .01,
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numberMin: 0
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},
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maxVelocity: {
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name: "$Max.Velocity",
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type: "number",
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defaultValue: 0.5,
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numberStep: .01,
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numberMin: 0
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},
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resistance: {
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name: "$Resistance",
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type: "number",
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defaultValue: .01,
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numberStep: .001,
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numberMin: 0
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}
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};
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public override terms: Record<string, Record<string, string>> = {
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"$Title": {
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"ZH_CN": "动力学",
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"EN_US": "Dynamics"
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},
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"$Intro": {
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"ZH_CN": "一切可以运动物体的必要行为，执行物理法则。",
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"EN_US": "All necessary behaviors that can move objects and implement the laws of physics."
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},
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"$Mass": {
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"ZH_CN": "质量 (Kg)",
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"EN_US": "Mass (Kg)"
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},
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"$Max.Acceleration": {
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"ZH_CN": "最大加速度 (m/s²)",
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"EN_US": "Maximum acceleration (m/s²)"
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},
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"$Max.Velocity": {
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"ZH_CN": "最大速度 (m/s)",
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"EN_US": "Maximum velocity (m/s)"
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},
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"$Physics": {
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"ZH_CN": "物理",
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"EN_US": "Physics"
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}
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};
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public override finalEffect(individual: Individual, group: Group, model: Model, t: number): void {
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// 计算当前速度
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const currentV = individual.vectorLength(individual.velocity);
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// 计算阻力
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const resistance = Math.max(1 - currentV * currentV * this.parameter.resistance, 0);
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// 计算加速度
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individual.acceleration[0] = individual.force[0] * resistance / this.parameter.mass;
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individual.acceleration[1] = individual.force[1] * resistance / this.parameter.mass;
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individual.acceleration[2] = individual.force[2] * resistance / this.parameter.mass;
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// 加速度约束
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const overA = Math.max(individual.vectorLength(individual.acceleration) - this.parameter.maxAcceleration, 0);
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individual.acceleration[0] = individual.acceleration[0] - individual.acceleration[0] * overA;
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individual.acceleration[1] = individual.acceleration[1] - individual.acceleration[1] * overA;
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individual.acceleration[2] = individual.acceleration[2] - individual.acceleration[2] * overA;
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// 计算速度
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individual.velocity[0] = individual.velocity[0] + individual.acceleration[0] * t;
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individual.velocity[1] = individual.velocity[1] + individual.acceleration[1] * t;
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individual.velocity[2] = individual.velocity[2] + individual.acceleration[2] * t;
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// 速度约束
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const overV = Math.max(individual.vectorLength(individual.velocity) - this.parameter.maxVelocity, 0);
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individual.velocity[0] = individual.velocity[0] - individual.velocity[0] * overV;
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individual.velocity[1] = individual.velocity[1] - individual.velocity[1] * overV;
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individual.velocity[2] = individual.velocity[2] - individual.velocity[2] * overV;
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// 应用速度
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individual.position[0] = individual.position[0] + individual.velocity[0] * t;
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individual.position[1] = individual.position[1] + individual.velocity[1] * t;
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individual.position[2] = individual.position[2] + individual.velocity[2] * t;
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};
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}
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export { Dynamics }; |