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完善shapeCollision 支持多边形

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This commit is contained in:
YHH
2020-06-16 00:04:28 +08:00
parent 5186bc0187
commit dba43b9773
22 changed files with 872 additions and 94 deletions
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247
source/bin/framework.js
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@@ -771,6 +771,8 @@ var Component = (function () {
}
return this;
};
Component.prototype.initialize = function () {
};
Component.prototype.onAddedToEntity = function () {
};
Component.prototype.onRemovedFromEntity = function () {
@@ -1011,6 +1013,9 @@ var Entity = (function () {
Entity.prototype.getComponent = function (type) {
return this.components.getComponent(type, false);
};
Entity.prototype.getComponents = function (type) {
return this.components.getComponents(type);
};
Entity.prototype.removeComponentForType = function (type) {
var comp = this.getComponent(type);
if (comp) {
@@ -1786,6 +1791,8 @@ var Collider = (function (_super) {
function Collider() {
var _this = _super !== null && _super.apply(this, arguments) || this;
_this.physicsLayer = 1 << 0;
_this.shouldColliderScaleAndRotationWithTransform = true;
_this.collidesWithLayers = Physics.allLayers;
_this._isPositionDirty = true;
_this._isRotationDirty = true;
return _this;
@@ -1815,6 +1822,7 @@ var Collider = (function (_super) {
if (this._localOffset != offset) {
this.unregisterColliderWithPhysicsSystem();
this._localOffset = offset;
this._localOffsetLength = this._localOffset.length();
this._isPositionDirty = true;
this.registerColliderWithPhysicsSystem();
}
@@ -1831,7 +1839,30 @@ var Collider = (function (_super) {
}
this._isColliderRegisterd = false;
};
Collider.prototype.initialize = function () {
Collider.prototype.overlaps = function (other) {
return this.shape.overlaps(other.shape);
};
Collider.prototype.onEntityTransformChanged = function (comp) {
switch (comp) {
case ComponentTransform.position:
this._isPositionDirty = true;
break;
case ComponentTransform.scale:
this._isPositionDirty = true;
break;
case ComponentTransform.rotation:
this._isRotationDirty = true;
break;
}
if (this._isColliderRegisterd)
Physics.updateCollider(this);
};
Collider.prototype.onEnabled = function () {
this.registerColliderWithPhysicsSystem();
this._isPositionDirty = this._isRotationDirty = true;
};
Collider.prototype.onDisabled = function () {
this.unregisterColliderWithPhysicsSystem();
};
return Collider;
}(Component));
@@ -2177,6 +2208,20 @@ var ComponentList = (function () {
}
return null;
};
ComponentList.prototype.getComponents = function (type) {
var components = [];
for (var i = 0; i < this._components.length; i++) {
var component = this._components[i];
if (component instanceof type)
components.push(components);
}
for (var i = 0; i < this._componentsToAdd.length; i++) {
var component = this._componentsToAdd[i];
if (component instanceof type)
components.push(components);
}
return components;
};
ComponentList.prototype.update = function () {
this.updateLists();
for (var i = 0; i < this._components.length; i++) {
@@ -2478,6 +2523,13 @@ var MathHelper = (function () {
MathHelper.maxOf = function (a, b, c, d) {
return Math.max(a, Math.max(b, Math.max(c, d)));
};
MathHelper.pointOnCirlce = function (circleCenter, radius, angleInDegrees) {
var radians = MathHelper.toRadians(angleInDegrees);
return new Vector2(Math.cos(radians) * radians + circleCenter.x, Math.sin(radians) * radians + circleCenter.y);
};
MathHelper.Epsilon = 0.00001;
MathHelper.Rad2Deg = 57.29578;
MathHelper.Deg2Rad = 0.0174532924;
return MathHelper;
}());
var Matrix2D = (function () {
@@ -2780,6 +2832,34 @@ var Vector2 = (function () {
this.x = x ? x : 0;
this.y = y ? y : this.x;
}
Object.defineProperty(Vector2, "zero", {
get: function () {
return Vector2.zeroVector2;
},
enumerable: true,
configurable: true
});
Object.defineProperty(Vector2, "one", {
get: function () {
return Vector2.unitVector2;
},
enumerable: true,
configurable: true
});
Object.defineProperty(Vector2, "unitX", {
get: function () {
return Vector2.unitXVector;
},
enumerable: true,
configurable: true
});
Object.defineProperty(Vector2, "unitY", {
get: function () {
return Vector2.unitYVector;
},
enumerable: true,
configurable: true
});
Vector2.add = function (value1, value2) {
var result = new Vector2(0, 0);
result.x = value1.x + value2.x;
@@ -2835,8 +2915,37 @@ var Vector2 = (function () {
var v1 = value1.x - value2.x, v2 = value1.y - value2.y;
return Math.sqrt((v1 * v1) + (v2 * v2));
};
Vector2.negate = function (value) {
var result = new Vector2();
result.x = -value.x;
result.y = -value.y;
return result;
};
Vector2.unitYVector = new Vector2(0, 1);
Vector2.unitXVector = new Vector2(1, 0);
Vector2.unitVector2 = new Vector2(1, 1);
Vector2.zeroVector2 = new Vector2(0, 0);
return Vector2;
}());
var ColliderTriggerHelper = (function () {
function ColliderTriggerHelper() {
}
ColliderTriggerHelper.prototype.update = function () {
var colliders = this._entity.getComponents(Collider);
for (var i = 0; i < colliders.length; i++) {
var collider = colliders[i];
var neighbors = Physics.boxcastBroadphase(collider.bounds, collider.collidesWithLayers);
for (var i_2 = 0; i_2 < neighbors.length; i_2++) {
var neighbor = neighbors[i_2];
if (!collider.isTrigger && !neighbor.isTrigger)
continue;
if (collider.overlaps(neighbor)) {
}
}
}
};
return ColliderTriggerHelper;
}());
var PointSectors;
(function (PointSectors) {
PointSectors[PointSectors["center"] = 0] = "center";
@@ -3041,6 +3150,20 @@ var Polygon = (function (_super) {
this._polygonCenter = Polygon.findPolygonCenter(this.points);
this._areEdgeNormalsDirty = true;
};
Polygon.prototype.overlaps = function (other) {
var result;
if (other instanceof Polygon)
return ShapeCollisions.polygonToPolygon(this, other);
if (other instanceof Circle) {
result = ShapeCollisions.circleToPolygon(other, this);
if (result) {
result.invertResult();
return true;
}
return false;
}
throw new Error("overlaps of Pologon to " + other + " are not supported");
};
Polygon.findPolygonCenter = function (points) {
var x = 0, y = 0;
for (var i = 0; i < points.length; i++) {
@@ -3132,13 +3255,14 @@ var Circle = (function (_super) {
return _this;
}
Circle.prototype.pointCollidesWithShape = function (point) {
return ShapeCollisions.pointToCicle(point, this);
return ShapeCollisions.pointToCircle(point, this);
};
Circle.prototype.collidesWithShape = function (other) {
if (other instanceof Box && other.isUnrotated) {
return ShapeCollisions.circleToRect(this, other);
return ShapeCollisions.circleToBox(this, other);
}
if (other instanceof Circle) {
return ShapeCollisions.circleToCircle(this, other);
}
if (other instanceof Polygon) {
return ShapeCollisions.circleToPolygon(this, other);
@@ -3147,12 +3271,38 @@ var Circle = (function (_super) {
};
Circle.prototype.recalculateBounds = function (collider) {
this.center = collider.localOffset;
if (collider.shouldColliderScaleAndRotationWithTransform) {
var scale = collider.entity.transform.scale;
var hasUnitScale = scale.x == 1 && scale.y == 1;
var maxScale = Math.max(scale.x, scale.y);
this.radius = this._originalRadius * maxScale;
if (collider.entity.transform.rotation != 0) {
var offsetAngle = Math.atan2(collider.localOffset.y, collider.localOffset.x) * MathHelper.Rad2Deg;
var offsetLength = hasUnitScale ? collider._localOffsetLength : (Vector2.multiply(collider.localOffset, collider.entity.transform.scale)).length();
this.center = MathHelper.pointOnCirlce(Vector2.zero, offsetLength, collider.entity.transform.rotationDegrees + offsetAngle);
}
}
this.position = Vector2.add(collider.entity.transform.position, this.center);
this.bounds = new Rectangle(this.position.x - this.radius, this.position.y - this.radius, this.radius * 2, this.radius * 2);
};
Circle.prototype.overlaps = function (other) {
if (other instanceof Box && other.isUnrotated)
return Collisions.isRectToCircle(other.bounds, this.position, this.radius);
if (other instanceof Circle)
return Collisions.isCircleToCircle(this.position, this.radius, other.position, other.radius);
if (other instanceof Polygon)
return ShapeCollisions.circleToPolygon(this, other);
throw new Error("overlaps of circle to " + other + " are not supported");
};
return Circle;
}(Shape));
var CollisionResult = (function () {
function CollisionResult() {
}
CollisionResult.prototype.invertResult = function () {
this.minimumTranslationVector = Vector2.negate(this.minimumTranslationVector);
this.normal = Vector2.negate(this.normal);
};
return CollisionResult;
}());
var ShapeCollisions = (function () {
@@ -3179,9 +3329,36 @@ var ShapeCollisions = (function () {
var maxA = 0;
var maxB = 0;
var intervalDist = 0;
this.getInterval(axis, first, minA, maxA);
this.getInterval(axis, second, minB, maxB);
var ta = this.getInterval(axis, first, minA, maxA);
minA = ta.min;
minB = ta.max;
var tb = this.getInterval(axis, second, minB, maxB);
minB = tb.min;
maxB = tb.max;
var relativeIntervalOffset = Vector2.dot(polygonOffset, axis);
minA += relativeIntervalOffset;
maxA += relativeIntervalOffset;
intervalDist = this.intervalDistance(minA, maxA, minB, maxB);
if (intervalDist > 0)
isIntersecting = false;
if (!isIntersecting)
return null;
intervalDist = Math.abs(intervalDist);
if (intervalDist < minIntervalDistance) {
minIntervalDistance = intervalDist;
translationAxis = axis;
if (Vector2.dot(translationAxis, polygonOffset) < 0)
translationAxis = new Vector2(-translationAxis);
}
}
result.normal = translationAxis;
result.minimumTranslationVector = Vector2.multiply(new Vector2(-translationAxis), new Vector2(minIntervalDistance));
return result;
};
ShapeCollisions.intervalDistance = function (minA, maxA, minB, maxB) {
if (minA < minB)
return minB - maxA;
return minA - minB;
};
ShapeCollisions.getInterval = function (axis, polygon, min, max) {
var dot = Vector2.dot(polygon.points[0], axis);
@@ -3195,6 +3372,7 @@ var ShapeCollisions = (function () {
max = dot;
}
}
return { min: min, max: max };
};
ShapeCollisions.circleToPolygon = function (circle, polygon) {
var result = new CollisionResult();
@@ -3205,30 +3383,47 @@ var ShapeCollisions = (function () {
result.normal = gpp.edgeNormal;
var circleCenterInsidePoly = polygon.containsPoint(circle.position);
if (distanceSquared > circle.radius * circle.radius && !circleCenterInsidePoly)
return result;
return null;
var mtv;
if (circleCenterInsidePoly) {
mtv = Vector2.multiply(result.normal, new Vector2(Math.sqrt(distanceSquared) - circle.radius, Math.sqrt(distanceSquared) - circle.radius));
mtv = Vector2.multiply(result.normal, new Vector2(Math.sqrt(distanceSquared) - circle.radius));
}
else {
if (distanceSquared == 0) {
mtv = Vector2.multiply(result.normal, new Vector2(circle.radius, circle.radius));
mtv = Vector2.multiply(result.normal, new Vector2(circle.radius));
}
else {
var distance = Math.sqrt(distanceSquared);
mtv = Vector2.multiply(new Vector2(-Vector2.subtract(poly2Circle, closestPoint)), new Vector2((circle.radius - distanceSquared) / distance));
}
}
result.minimumTranslationVector = mtv;
result.point = Vector2.add(closestPoint, polygon.position);
return result;
};
ShapeCollisions.circleToRect = function (circle, box) {
ShapeCollisions.circleToBox = function (circle, box) {
var result = new CollisionResult();
var closestPointOnBounds = box.bounds.getClosestPointOnRectangleBorderToPoint(circle.position).res;
if (box.containsPoint(circle.position)) {
result.point = closestPointOnBounds;
var safePlace = Vector2.add(closestPointOnBounds, Vector2.subtract(result.normal, new Vector2(circle.radius, circle.radius)));
var safePlace = Vector2.add(closestPointOnBounds, Vector2.subtract(result.normal, new Vector2(circle.radius)));
result.minimumTranslationVector = Vector2.subtract(circle.position, safePlace);
return result;
}
return result;
var sqrDistance = Vector2.distanceSquared(closestPointOnBounds, circle.position);
if (sqrDistance == 0) {
result.minimumTranslationVector = Vector2.multiply(result.normal, new Vector2(circle.radius));
}
else if (sqrDistance <= circle.radius * circle.radius) {
result.normal = Vector2.subtract(circle.position, closestPointOnBounds);
var depth = result.normal.length() - circle.radius;
result.normal = Vector2Ext.normalize(result.normal);
result.minimumTranslationVector = Vector2.multiply(new Vector2(depth), result.normal);
return result;
}
return null;
};
ShapeCollisions.pointToCicle = function (point, circle) {
ShapeCollisions.pointToCircle = function (point, circle) {
var result = new CollisionResult();
var distanceSquared = Vector2.distanceSquared(point, circle.position);
var sumOfRadii = 1 + circle.radius;
@@ -3240,7 +3435,7 @@ var ShapeCollisions = (function () {
result.point = Vector2.add(circle.position, Vector2.multiply(result.normal, new Vector2(circle.radius, circle.radius)));
return result;
}
return result;
return null;
};
ShapeCollisions.closestPointOnLine = function (lineA, lineB, closestTo) {
var v = Vector2.subtract(lineB, lineA);
@@ -3261,7 +3456,21 @@ var ShapeCollisions = (function () {
result.point = Vector2.add(closestPoint, poly.position);
return result;
}
return result;
return null;
};
ShapeCollisions.circleToCircle = function (first, second) {
var result = new CollisionResult();
var distanceSquared = Vector2.distanceSquared(first.position, second.position);
var sumOfRadii = first.radius + second.radius;
var collided = distanceSquared < sumOfRadii * sumOfRadii;
if (collided) {
result.normal = Vector2.normalize(Vector2.subtract(first.position, second.position));
var depth = sumOfRadii - Math.sqrt(distanceSquared);
result.minimumTranslationVector = Vector2.multiply(new Vector2(-depth), result.normal);
result.point = Vector2.add(second.position, Vector2.multiply(result.normal, new Vector2(second.radius)));
return result;
}
return null;
};
return ShapeCollisions;
}());
@@ -3493,6 +3702,16 @@ var Vector2Ext = (function () {
Vector2Ext.perpendicular = function (first, second) {
return new Vector2(-1 * (second.y - first.y), second.x - first.x);
};
Vector2Ext.normalize = function (vec) {
var magnitude = Math.sqrt((vec.x * vec.x) + (vec.y * vec.y));
if (magnitude > MathHelper.Epsilon) {
vec = Vector2.divide(vec, new Vector2(magnitude));
}
else {
vec.x = vec.y = 0;
}
return vec;
};
return Vector2Ext;
}());
var WebGLUtils = (function () {