mascully/wingbase
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

improve grappling hook physics and rendering

Browse source
This commit is contained in:
Asraelite 2016-03-27 02:22:49 +01:00
parent 4753f879e5
commit 663305bd23
11 changed files with 129 additions and 55 deletions
Download patch file Download diff file Expand all files Collapse all files

80
server/game/room/world/physics.js
View file

@ -21,20 +21,14 @@ class Physics {
this.world = new Box2D.b2World(new b2Vec2(0, 0), false);
this.toRemove = [];
this.toWeld = [];
this.contacts = [];
this.idk = false;
let onContact = contact => {
let bodya = contact.GetFixtureA().GetBody().GetUserData();
let bodyb = contact.GetFixtureB().GetBody().GetUserData();
if (bodya) {
bodya.applyDelta();
bodya.contact(bodyb. contact);
}
if (bodyb) {
bodyb.applyDelta();
bodyb.contact(bodya, contact);
}
this.contacts.push([bodya, bodyb, contact]);
}
let listener = new Box2D.b2ContactListener();
@ -58,7 +52,7 @@ class Physics {
bodyDef.angularVelocity = body.rvel || 0;
bodyDef.bullet = body.type == 'missile';
bodyDef.linearDamping = body.type == 'asteroid' ? 0.003 : 0.01;
bodyDef.angularDamping = body.type == 'asteroid' ? 0.003 : 0.01;
bodyDef.angularDamping = body.type == 'asteroid' ? 0.003 : 0.04;
bodyDef.type = body.type == 'structure' ?
Box2D.b2BodyType.b2_staticBody : Box2D.b2BodyType.b2_dynamicBody;
if (body.player || true) bodyDef.allowSleep = false;
@ -83,14 +77,18 @@ class Physics {
// TODO: Make this shorter somehow.
createCopula(copula) {
let s = SCALE;
if (copula.type == 'rope') {
let b1 = copula.bodyA.b2body;
let b2 = copula.bodyB.b2body;
let p1 = copula.pointA;
let p2 = copula.pointB;
let p1 = new b2Vec2(copula.pointA.x, copula.pointA.y);
let p2 = new b2Vec2(copula.pointB.x, copula.pointB.y);
// See top of file.
let start = b1.GetWorldPoint(new b2Vec2(p1.x, p1.y), {});
let end = b2.GetWorldPoint(new b2Vec2(p2.x, p2.y), {});
let start = b1.GetWorldPoint(p1, {});
let end = b2.GetWorldPoint(p2, {});
copula.bodyA.debug = p1;
//copula.bodyB.debug = end;
let dx = start.x - end.x
let dy = start.y - end.y;
let len = Math.sqrt(dx * dx + dy * dy);
@ -98,10 +96,10 @@ class Physics {
let ropeDef = new Box2D.b2RopeJointDef();
ropeDef.bodyA = b1;
ropeDef.bodyB = b2;
ropeDef.maxLength = len;
ropeDef.maxLength = copula.initLength || len;
ropeDef.collideConnected = true;
ropeDef.worldAnchorA = new b2Vec2(start);
ropeDef.worldAnchorB = new b2Vec2(end);
ropeDef.localAnchorA = p1;
ropeDef.localAnchorB = p2;
let b2joint = this.world.CreateJoint(ropeDef);
copula.b2joint = b2joint;
@ -109,17 +107,28 @@ class Physics {
}
weld(bodyA, bodyB) {
this.toWeld.push([bodyA, bodyB]);
weld(bodyA, bodyB, point) {
let b1 = bodyA.b2body;
let b2 = bodyB.b2body;
let jointDef = new Box2D.b2WeldJointDef();
let anchor = b1.GetWorldPoint(new b2Vec2(point.x, point.y), {});
jointDef.bodyA = b1;
jointDef.bodyB = b2;
jointDef.collideConnected = true;
jointDef.localAnchorA = b1.GetLocalPoint(anchor, {});
jointDef.localAnchorB = b2.GetLocalPoint(anchor, {});
jointDef.localAnchorA = new b2Vec2(jointDef.localAnchorA.x, jointDef.localAnchorA.y);
jointDef.localAnchorB = new b2Vec2(jointDef.localAnchorB.x, jointDef.localAnchorB.y);
jointDef.referenceAngle = b2.GetAngleRadians() - b1.GetAngleRadians();
this.world.CreateJoint(jointDef);
}
contactData(contact) {
let worldManifold = new Box2D.b2WorldManifold();
contact.GetWorldManifold(worldManifold);
let localManifold = new Box2D.b2WorldManifold();
contact.GetManifold(localManifold);
let localManifold = contact.GetManifold();
let worldNormal = worldManifold.normal;
let normal = localManifold.normal;
let normal = localManifold.localNormal;
return {
normal: normal,
@ -167,18 +176,25 @@ class Physics {
this.world.DestroyBody(this.toRemove[i].b2body);
}
for (var i = 0; i < this.toWeld.length; i++) {
let b1 = this.toWeld[i][0].b2body;
let b2 = this.toWeld[i][1].b2body;
let jointDef = new Box2D.b2WeldJointDef();
jointDef.bodyA = b1;
jointDef.bodyB = b2;
//jointDef.referenceAngle = b1.GetAngleRadians() - b2.GetAngleRadians();
this.world.CreateJoint(jointDef);
this.toRemove = [];
for (var i = 0; i < this.contacts.length; i++) {
let contact = this.contacts[i][2];
let bodya = this.contacts[i][0];
let bodyb = this.contacts[i][1];
if (bodya) {
bodya.applyDelta();
bodya.contact(bodyb, contact);
}
if (bodyb) {
bodyb.applyDelta();
bodyb.contact(bodya, contact);
}
}
this.toRemove = [];
this.toWeld = [];
this.contacts = [];
}
}