CocosPlugin/esengine
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

新增Physics.linecast/linecastAll方法

Browse Source
This commit is contained in:
YHH
2020-08-22 12:21:40 +08:00
parent 73f0f54ba7
commit 6c1cfec928
16 changed files with 537 additions and 145 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
source/src/ECS/Core.ts
View File

@@ -228,6 +228,7 @@ module es {
this.addEventListener(egret.Event.ENTER_FRAME, this.update, this);
Input.initialize();
KeyboardUtils.init();
this.initialize();
}
}

13
source/src/Math/MathHelper.ts
View File

@@ -93,5 +93,18 @@ module es {
return t;
}
/**
* 由上移量向上移。start可以小于或大于end。例如:开始是2，结束是10，移位是4，结果是6
* @param start
* @param end
* @param shift
*/
public static approach(start: number, end: number, shift: number): number {
if (start < end)
return Math.min(start + shift, end);
return Math.max(start - shift, end);
}
}
}

35
source/src/Physics/Physics.ts
View File

@@ -1,3 +1,4 @@
///<reference path="./RaycastHit.ts" />
module es {
export class Physics {
/** 调用reset并创建一个新的SpatialHash时使用的单元格大小 */
@@ -13,6 +14,12 @@ module es {
* 在碰撞器中开始的射线/直线是否强制转换检测到那些碰撞器
*/
public static raycastsStartInColliders = false;
/**
* 我们保留它以避免在每次raycast发生时分配它
*/
public static _hitArray: RaycastHit[] = [
new RaycastHit()
];
public static reset() {
this._spatialHash = new SpatialHash(this.spatialHashCellSize);
@@ -85,6 +92,34 @@ module es {
this._spatialHash.register(collider);
}
/**
* 返回与layerMask匹配的碰撞器的第一次命中
* @param start
* @param end
* @param layerMask
*/
public static linecast(start: Vector2, end: Vector2, layerMask: number = Physics.allLayers): RaycastHit{
this._hitArray[0].reset();
this.linecastAll(start, end, this._hitArray, layerMask);
return this._hitArray[0];
}
/**
* 通过空间散列强制执行一行，并用该行命中的任何碰撞器填充hits数组
* @param start
* @param end
* @param hits
* @param layerMask
*/
public static linecastAll(start: Vector2, end: Vector2, hits: RaycastHit[], layerMask: number = Physics.allLayers){
if (hits.length == 0){
console.warn("传入了一个空的hits数组。没有点击会被返回");
return 0;
}
return this._spatialHash.linecast(start, end, hits, layerMask);
}
/**
* debug绘制空间散列的内容
* @param secondsToDisplay

2
source/src/Physics/RaycastHit.ts
View File

@@ -30,7 +30,7 @@ module es {
*/
public centroid: Vector2;
constructor(collider: Collider, fraction: number, distance: number, point: Vector2, normal: Vector2){
constructor(collider?: Collider, fraction?: number, distance?: number, point?: Vector2, normal?: Vector2){
this.collider = collider;
this.fraction = fraction;
this.distance = distance;

69
source/src/Physics/Verlet/SpatialHash.ts
View File

@@ -144,6 +144,73 @@ module es {
return this._tempHashSet;
}
/**
* 通过空间散列强制执行一行，并用该行命中的任何碰撞器填充hits数组。
* @param start
* @param end
* @param hits
* @param layerMask
*/
public linecast(start: Vector2, end: Vector2, hits: RaycastHit[], layerMask: number){
let ray = new Ray2D(start, end);
this._raycastParser.start(ray, hits, layerMask);
// 在与网格相同的空间中获取起始/结束位置
let currentCell = this.cellCoords(start.x, start.y);
let lastCell = this.cellCoords(end.x, end.y);
let stepX = Math.sign(ray.direction.x);
let stepY = Math.sign(ray.direction.y);
// 我们要确保，如果我们在同一行或同一行，我们不会步进不必要的方向
if (currentCell.x == lastCell.x) stepX = 0;
if (currentCell.y == lastCell.y) stepY = 0;
// 计算单元边界。当这一步是正的，下一个单元格在这一步之后意味着我们加1。
// 如果为负，则单元格在此之前，这种情况下不添加边界
let xStep = stepX < 0 ? 0 : stepX;
let yStep = stepY < 0 ? 0 : stepY;
let nextBoundaryX = (currentCell.x + xStep) * this._cellSize;
let nextBoundaryY = (currentCell.y + yStep) * this._cellSize;
// 确定射线穿过第一个垂直体素边界时的t值。y/horizontal。
// 这两个值的最小值将表明我们可以沿着射线走多少，而仍然保持在当前体素中，对于接近vertical/horizontal的射线来说可能是无限的
let tMaxX = ray.direction.x != 0 ? (nextBoundaryX - ray.start.x) / ray.direction.x : Number.MAX_VALUE;
let tMaxY = ray.direction.y != 0 ? (nextBoundaryY - ray.start.y) / ray.direction.y : Number.MAX_VALUE;
let tDeltaX = ray.direction.x != 0 ? this._cellSize / (ray.direction.x * stepX) : Number.MAX_VALUE;
let tDeltaY = ray.direction.y != 0 ? this._cellSize / (ray.direction.y * stepY) : Number.MAX_VALUE;
// 开始遍历并返回交叉单元格。
let cell = this.cellAtPosition(currentCell.x, currentCell.y);
if (cell && this._raycastParser.checkRayIntersection(currentCell.x, currentCell.y, cell)){
this._raycastParser.reset();
return this._raycastParser.hitCounter;
}
while (currentCell.x != lastCell.x || currentCell.y != lastCell.y){
if (tMaxX < tMaxY){
currentCell.x = MathHelper.approach(currentCell.x, lastCell.x, Math.abs(stepX));
tMaxX += tDeltaX;
}else{
currentCell.y = MathHelper.approach(currentCell.y, lastCell.y, Math.abs(stepY));
tMaxY += tDeltaY;
}
cell = this.cellAtPosition(currentCell.x, currentCell.y);
if (cell && this._raycastParser.checkRayIntersection(currentCell.x, currentCell.y, cell)){
this._raycastParser.reset();
return this._raycastParser.hitCounter;
}
}
this._raycastParser.reset();
return this._raycastParser.hitCounter;
}
/**
* 获取位于指定圆内的所有碰撞器
* @param circleCenter
@@ -268,7 +335,7 @@ module es {
};
public _hits: RaycastHit[];
public _tempHit: RaycastHit;
public _tempHit: RaycastHit = new RaycastHit();
public _checkedColliders: Collider[] = [];
public _cellHits: RaycastHit[] = [];
public _ray: Ray2D;

24
source/src/Utils/KeyboardUtils.ts
View File

@@ -84,10 +84,10 @@ class KeyboardUtils {
private static keyUpDict: Object;
public static init(): void {
this.keyDownDict = {};
this.keyUpDict = {};
document.addEventListener("keydown", this.onKeyDonwHander);
document.addEventListener("keyup", this.onKeyUpHander);
KeyboardUtils.keyDownDict = {};
KeyboardUtils.keyUpDict = {};
document.addEventListener("keydown", KeyboardUtils.onKeyDonwHander);
document.addEventListener("keyup", KeyboardUtils.onKeyUpHander);
}
/**
@@ -115,16 +115,16 @@ class KeyboardUtils {
* 销毁方法
*/
public static destroy(): void {
this.keyDownDict = null;
this.keyUpDict = null;
KeyboardUtils.keyDownDict = null;
KeyboardUtils.keyUpDict = null;
document.removeEventListener("keydown", this.onKeyDonwHander);
document.removeEventListener("keyup", this.onKeyUpHander);
}
private static onKeyDonwHander(event: KeyboardEvent): void {
if (!this.keyDownDict) return;
var key: string = this.keyCodeToString(event.keyCode);
var o: Object = this.keyDownDict[key];
if (!KeyboardUtils.keyDownDict) return;
var key: string = KeyboardUtils.keyCodeToString(event.keyCode);
var o: Object = KeyboardUtils.keyDownDict[key];
if (o) {
var fun: Function = o["fun"];
var thisObj: any = o["thisObj"];
@@ -134,9 +134,9 @@ class KeyboardUtils {
}
private static onKeyUpHander(event: KeyboardEvent): void {
if (!this.keyUpDict) return;
var key: string = this.keyCodeToString(event.keyCode);
var o: Object = this.keyUpDict[key];
if (!KeyboardUtils.keyUpDict) return;
var key: string = KeyboardUtils.keyCodeToString(event.keyCode);
var o: Object = KeyboardUtils.keyUpDict[key];
if (o) {
var fun: Function = o["fun"];
var thisObj: any = o["thisObj"];