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移除物理引擎

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This commit is contained in:
yhh
2020-11-23 17:47:13 +08:00
parent 30cc74c8eb
commit 6505f31ad5
7 changed files with 1 additions and 511 deletions
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57
source/bin/framework.d.ts vendored
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@@ -1376,63 +1376,6 @@ declare module es {
static boxToBoxCast(first: Box, second: Box, movement: Vector2, hit: RaycastHit): boolean;
}
}
declare module es {
class Particle {
position: Vector2;
lastPosition: Vector2;
mass: number;
radius: number;
collidesWithColliders: boolean;
isPinned: boolean;
acceleration: Vector2;
pinnedPosition: Vector2;
applyForce(force: Vector2): void;
}
}
declare module es {
class VerletWorld {
gravity: Vector2;
constraintIterations: number;
maximumStepIterations: number;
simulationBounds?: Rectangle;
allowDragging: boolean;
_composites: Composite[];
static _colliders: Collider[];
_tempCircle: Circle;
_leftOverTime: number;
_fixedDeltaTime: number;
_iterationSteps: number;
_fixedDeltaTimeSq: number;
constructor(simulationBounds?: Rectangle);
update(): void;
handleCollisions(p: Particle, collidesWithLayers: number): void;
constrainParticleToBounds(p: Particle): void;
updateTiming(): void;
addComposite<T extends Composite>(composite: T): T;
removeComposite(composite: Composite): void;
handleDragging(): void;
debugRender(camera: Camera): void;
}
}
declare module es {
class Composite {
friction: Vector2;
collidesWithLayers: number;
particles: Particle[];
_constraints: Constraint[];
solveConstraints(): void;
updateParticles(deltaTimeSquared: number, gravity: Vector2): void;
handleConstraintCollisions(): void;
debugRender(camera: Camera): void;
}
}
declare module es {
abstract class Constraint {
collidesWithColliders: boolean;
abstract solve(): any;
handleCollisions(collidesWithLayers: number): void;
}
}
declare class ArrayUtils {
static bubbleSort(ary: number[]): void;
static insertionSort(ary: number[]): void;

177
source/bin/framework.js
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@@ -6710,183 +6710,6 @@ var es;
}());
es.ShapeCollisions = ShapeCollisions;
})(es || (es = {}));
var es;
(function (es) {
var Particle = (function () {
function Particle() {
this.mass = 1;
this.radius = 0;
this.collidesWithColliders = true;
}
Particle.prototype.applyForce = function (force) {
this.acceleration.add(es.Vector2.divide(force, new es.Vector2(this.mass)));
};
return Particle;
}());
es.Particle = Particle;
})(es || (es = {}));
var es;
(function (es) {
var VerletWorld = (function () {
function VerletWorld(simulationBounds) {
if (simulationBounds === void 0) { simulationBounds = null; }
this.gravity = new es.Vector2(0, 980);
this.constraintIterations = 3;
this.maximumStepIterations = 5;
this.allowDragging = true;
this._composites = [];
this._tempCircle = new es.Circle(1);
this._leftOverTime = 0;
this._fixedDeltaTime = 1 / 60;
this._iterationSteps = 0;
this._fixedDeltaTimeSq = 0;
this.simulationBounds = simulationBounds;
this._fixedDeltaTimeSq = Math.pow(this._fixedDeltaTimeSq, 2);
}
VerletWorld.prototype.update = function () {
this.updateTiming();
if (this.allowDragging)
this.handleDragging();
for (var iteration = 1; iteration <= this._iterationSteps; iteration++) {
for (var i = this._composites.length - 1; i >= 0; i--) {
var composite = this._composites[i];
for (var s = 0; s < this.constraintIterations; s++)
composite.solveConstraints();
composite.updateParticles(this._fixedDeltaTimeSq, this.gravity);
composite.handleConstraintCollisions();
for (var j = 0; j < composite.particles.length; j++) {
var p = composite.particles[j];
if (this.simulationBounds) {
this.constrainParticleToBounds(p);
}
if (p.collidesWithColliders)
this.handleCollisions(p, composite.collidesWithLayers);
}
}
}
};
VerletWorld.prototype.handleCollisions = function (p, collidesWithLayers) {
var collidedCount = es.Physics.overlapCircleAll(p.position, p.radius, VerletWorld._colliders, collidesWithLayers);
for (var i = 0; i < collidedCount; i++) {
var collider = VerletWorld._colliders[i];
if (collider.isTrigger)
continue;
var collisionResult = new es.CollisionResult();
if (p.radius < 2) {
if (collider.shape.pointCollidesWithShape(p.position, collisionResult)) {
p.position.subtract(collisionResult.minimumTranslationVector);
}
}
else {
this._tempCircle.radius = p.radius;
this._tempCircle.position = p.position;
if (this._tempCircle.collidesWithShape(collider.shape, collisionResult)) {
p.position.subtract(collisionResult.minimumTranslationVector);
}
}
}
};
VerletWorld.prototype.constrainParticleToBounds = function (p) {
var tempPos = p.position;
var bounds = this.simulationBounds;
if (p.radius == 0) {
if (tempPos.y > bounds.height)
tempPos.y = bounds.height;
else if (tempPos.y < bounds.y)
tempPos.y = bounds.y;
if (tempPos.x < bounds.x)
tempPos.x = bounds.x;
else if (tempPos.x > bounds.width)
tempPos.x = bounds.width;
}
else {
if (tempPos.y < bounds.y + p.radius)
tempPos.y = 2 * (bounds.y + p.radius) - tempPos.y;
if (tempPos.y > bounds.height - p.radius)
tempPos.y = 2 * (bounds.height - p.radius) - tempPos.y;
if (tempPos.x > bounds.width - p.radius)
tempPos.x = 2 * (bounds.width - p.radius) - tempPos.x;
if (tempPos.x < bounds.x + p.radius)
tempPos.x = 2 * (bounds.x + p.radius) - tempPos.x;
}
p.position = tempPos;
};
VerletWorld.prototype.updateTiming = function () {
this._leftOverTime += es.Time.deltaTime;
this._iterationSteps = Math.floor(Math.trunc(this._leftOverTime / this._fixedDeltaTime));
this._leftOverTime -= this._iterationSteps * this._fixedDeltaTime;
this._iterationSteps = Math.min(this._iterationSteps, this.maximumStepIterations);
};
VerletWorld.prototype.addComposite = function (composite) {
this._composites.push(composite);
return composite;
};
VerletWorld.prototype.removeComposite = function (composite) {
this._composites.remove(composite);
};
VerletWorld.prototype.handleDragging = function () {
};
VerletWorld.prototype.debugRender = function (camera) {
for (var i = 0; i < this._composites.length; i++)
this._composites[i].debugRender(camera);
};
VerletWorld._colliders = new Array(4);
return VerletWorld;
}());
es.VerletWorld = VerletWorld;
})(es || (es = {}));
var es;
(function (es) {
var Composite = (function () {
function Composite() {
this.friction = new es.Vector2(0.98, 1);
this.collidesWithLayers = es.Physics.allLayers;
this.particles = [];
this._constraints = [];
}
Composite.prototype.solveConstraints = function () {
for (var i = this._constraints.length - 1; i >= 0; i--) {
this._constraints[i].solve();
}
};
Composite.prototype.updateParticles = function (deltaTimeSquared, gravity) {
for (var j = 0; j < this.particles.length; j++) {
var p = this.particles[j];
if (p.isPinned) {
p.position = p.pinnedPosition;
continue;
}
p.applyForce(es.Vector2.multiply(new es.Vector2(p.mass), gravity));
var vel = es.Vector2.subtract(p.position, p.lastPosition).multiply(this.friction);
var nextPos = es.Vector2.add(p.position, vel).add(es.Vector2.multiply(new es.Vector2(0.5 * deltaTimeSquared), p.acceleration));
p.lastPosition = p.position;
p.position = nextPos;
p.acceleration.x = p.acceleration.y = 0;
}
};
Composite.prototype.handleConstraintCollisions = function () {
for (var i = this._constraints.length - 1; i >= 0; i--) {
if (this._constraints[i].collidesWithColliders)
this._constraints[i].handleCollisions(this.collidesWithLayers);
}
};
Composite.prototype.debugRender = function (camera) {
};
return Composite;
}());
es.Composite = Composite;
})(es || (es = {}));
var es;
(function (es) {
var Constraint = (function () {
function Constraint() {
this.collidesWithColliders = true;
}
Constraint.prototype.handleCollisions = function (collidesWithLayers) { };
return Constraint;
}());
es.Constraint = Constraint;
})(es || (es = {}));
var ArrayUtils = (function () {
function ArrayUtils() {
}

2
source/bin/framework.min.js vendored
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64
source/src/Physics/Verlet/Composites/Composite.ts
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@@ -1,64 +0,0 @@
module es {
/**
* 代表了Verlet世界中的一个对象。由粒子和约束组成，并处理更新它们
*/
export class Composite {
/**
* 摩擦作用于所有粒子运动以使其阻尼。值应该非常接近1。
*/
public friction: Vector2 = new Vector2(0.98, 1);
/**
* 当实体的时候，碰撞器应该碰撞的所有层的图层蒙版。使用了移动方法。默认为所有层。
*/
public collidesWithLayers = Physics.allLayers;
public particles: Particle[] = [];
public _constraints: Constraint[] = [];
/**
* 处理解决所有约束条件
*/
public solveConstraints(){
for (let i = this._constraints.length - 1; i >= 0; i --){
this._constraints[i].solve();
}
}
/**
* 对每个粒子应用重力，并做Velet积分
* @param deltaTimeSquared
* @param gravity
*/
public updateParticles(deltaTimeSquared: number, gravity: Vector2){
for (let j = 0; j < this.particles.length; j ++){
let p = this.particles[j];
if (p.isPinned){
p.position = p.pinnedPosition;
continue;
}
p.applyForce(Vector2.multiply(new Vector2(p.mass), gravity));
// 计算速度并用摩擦阻尼
let vel = Vector2.subtract(p.position, p.lastPosition).multiply(this.friction);
// 使用verlet积分计算下一个位置
let nextPos = Vector2.add(p.position, vel).add(Vector2.multiply(new Vector2(0.5 * deltaTimeSquared), p.acceleration));
p.lastPosition = p.position;
p.position = nextPos;
p.acceleration.x = p.acceleration.y = 0;
}
}
public handleConstraintCollisions(){
for (let i = this._constraints.length - 1; i >= 0; i --){
if (this._constraints[i].collidesWithColliders)
this._constraints[i].handleCollisions(this.collidesWithLayers);
}
}
public debugRender(camera: Camera){
}
}
}

18
source/src/Physics/Verlet/Constraints/Constraint.ts
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@@ -1,18 +0,0 @@
module es {
export abstract class Constraint {
/**
* 如果为true，约束将用标准碰撞器检查碰撞。内部约束不需要将此设置为true。
*/
public collidesWithColliders: boolean = true;
/**
* 解决约束
*/
public abstract solve();
/**
* 如果collidesWithColliders为true，这个会被调用
* @param collidesWithLayers
*/
public handleCollisions(collidesWithLayers: number){}
}
}

36
source/src/Physics/Verlet/Particle.ts
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@@ -1,36 +0,0 @@
module es {
export class Particle {
/**
* 粒子的当前位置
*/
public position: Vector2;
/**
* 粒子最近移动之前的位置
*/
public lastPosition: Vector2;
/**
* 粒子的质量。考虑到所有的力量和限制
*/
public mass: number = 1;
/**
* 粒子的半径
*/
public radius: number = 0;
/**
* 如果为true，粒子将与标准对撞机相撞
*/
public collidesWithColliders: boolean = true;
public isPinned: boolean;
public acceleration: Vector2;
public pinnedPosition: Vector2;
/**
* 对质点施加一个考虑质量的力
* @param force
*/
public applyForce(force: Vector2){
this.acceleration.add(Vector2.divide(force, new Vector2(this.mass)));
}
}
}

158
source/src/Physics/Verlet/VerletWorld.ts
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@@ -1,158 +0,0 @@
module es {
/**
* Verlet模拟的根。创建一个世界，并调用它的更新方法。
*/
export class VerletWorld {
/**
* 用于模拟的重力
*/
public gravity: Vector2 = new Vector2(0, 980);
/**
* 整个模拟的最大迭代次数
*/
public constraintIterations = 3;
/**
* 整个模拟的最大迭代次数
*/
public maximumStepIterations = 5;
/**
* 世界的边界。粒子将被限制在这个空间中。
*/
public simulationBounds?: Rectangle;
/**
* 粒子是否允许被拖拽
*/
public allowDragging: boolean = true;
public _composites: Composite[] = [];
public static _colliders: Collider[] = new Array(4);
public _tempCircle: Circle = new Circle(1);
public _leftOverTime: number = 0;
public _fixedDeltaTime = 1 / 60;
public _iterationSteps: number = 0;
public _fixedDeltaTimeSq: number = 0;
constructor(simulationBounds: Rectangle = null) {
this.simulationBounds = simulationBounds;
this._fixedDeltaTimeSq = Math.pow(this._fixedDeltaTimeSq, 2);
}
public update(){
this.updateTiming();
if (this.allowDragging)
this.handleDragging();
for (let iteration = 1; iteration <= this._iterationSteps; iteration++){
for (let i = this._composites.length - 1; i >= 0; i --){
let composite = this._composites[i];
for (let s = 0; s < this.constraintIterations; s++)
composite.solveConstraints();
composite.updateParticles(this._fixedDeltaTimeSq, this.gravity);
composite.handleConstraintCollisions();
for (let j = 0; j < composite.particles.length; j ++){
let p = composite.particles[j];
if (this.simulationBounds){
this.constrainParticleToBounds(p);
}
if (p.collidesWithColliders)
this.handleCollisions(p, composite.collidesWithLayers);
}
}
}
}
public handleCollisions(p: Particle, collidesWithLayers: number){
let collidedCount = Physics.overlapCircleAll(p.position, p.radius, VerletWorld._colliders, collidesWithLayers);
for (let i = 0; i < collidedCount; i ++){
let collider = VerletWorld._colliders[i];
if (collider.isTrigger)
continue;
let collisionResult = new CollisionResult();
// 如果我们有一个足够大的粒子半径使用一个圆来检查碰撞，否则回落到一个点
if (p.radius < 2){
if (collider.shape.pointCollidesWithShape(p.position, collisionResult)){
// TODO: 添加一个碰撞器字典，让碰撞器设置为力的体积。然后，number可以在这里乘以mtv。它应该是非常小的值，比如0.002。
p.position.subtract(collisionResult.minimumTranslationVector);
}
}else{
this._tempCircle.radius = p.radius;
this._tempCircle.position = p.position;
if (this._tempCircle.collidesWithShape(collider.shape, collisionResult)){
p.position.subtract(collisionResult.minimumTranslationVector);
}
}
}
}
public constrainParticleToBounds(p: Particle){
let tempPos = p.position;
let bounds = this.simulationBounds;
if (p.radius == 0){
if (tempPos.y > bounds.height)
tempPos.y = bounds.height;
else if(tempPos.y < bounds.y)
tempPos.y = bounds.y;
if (tempPos.x < bounds.x)
tempPos.x = bounds.x;
else if (tempPos.x > bounds.width)
tempPos.x = bounds.width;
}else{
if (tempPos.y < bounds.y + p.radius)
tempPos.y = 2 * (bounds.y + p.radius) - tempPos.y;
if (tempPos.y > bounds.height - p.radius)
tempPos.y = 2 * (bounds.height - p.radius) - tempPos.y;
if (tempPos.x > bounds.width - p.radius)
tempPos.x = 2 * (bounds.width - p.radius) - tempPos.x;
if (tempPos.x < bounds.x + p.radius)
tempPos.x = 2 * (bounds.x + p.radius) - tempPos.x;
}
p.position = tempPos;
}
public updateTiming(){
this._leftOverTime += Time.deltaTime;
this._iterationSteps = Math.floor(Math.trunc(this._leftOverTime / this._fixedDeltaTime));
this._leftOverTime -= this._iterationSteps * this._fixedDeltaTime;
this._iterationSteps = Math.min(this._iterationSteps, this.maximumStepIterations);
}
/**
* 向模拟添加composite
* @param composite
*/
public addComposite<T extends Composite>(composite: T): T{
this._composites.push(composite);
return composite;
}
/**
* 从模拟中删除一个composite
* @param composite
*/
public removeComposite(composite: Composite){
this._composites.remove(composite);
}
public handleDragging(){
}
public debugRender(camera: Camera){
for (let i = 0; i < this._composites.length; i ++)
this._composites[i].debugRender(camera);
}
}
}