1 /**
2 * Copyright (c) 2006-2019 LOVE Development Team
3 *
4 * This software is provided 'as-is', without any express or implied
5 * warranty. In no event will the authors be held liable for any damages
6 * arising from the use of this software.
7 *
8 * Permission is granted to anyone to use this software for any purpose,
9 * including commercial applications, and to alter it and redistribute it
10 * freely, subject to the following restrictions:
11 *
12 * 1. The origin of this software must not be misrepresented; you must not
13 * claim that you wrote the original software. If you use this software
14 * in a product, an acknowledgment in the product documentation would be
15 * appreciated but is not required.
16 * 2. Altered source versions must be plainly marked as such, and must not be
17 * misrepresented as being the original software.
18 * 3. This notice may not be removed or altered from any source distribution.
19 **/
20
21 #include "RopeJoint.h"
22
23 // Module
24 #include "Body.h"
25 #include "World.h"
26 #include "Physics.h"
27
28 namespace love
29 {
30 namespace physics
31 {
32 namespace box2d
33 {
34
35 love::Type RopeJoint::type("RopeJoint", &Joint::type);
36
RopeJoint(Body * body1,Body * body2,float x1,float y1,float x2,float y2,float maxLength,bool collideConnected)37 RopeJoint::RopeJoint(Body *body1, Body *body2, float x1, float y1, float x2, float y2, float maxLength, bool collideConnected)
38 : Joint(body1, body2)
39 , joint(NULL)
40 {
41 b2RopeJointDef def;
42 def.bodyA = body1->body;
43 def.bodyB = body2->body;
44 body1->getLocalPoint(x1, y1, x1, y1);
45 body2->getLocalPoint(x2, y2, x2, y2);
46 def.localAnchorA.x = Physics::scaleDown(x1);
47 def.localAnchorA.y = Physics::scaleDown(y1);
48 def.localAnchorB.x = Physics::scaleDown(x2);
49 def.localAnchorB.y = Physics::scaleDown(y2);
50 def.maxLength = Physics::scaleDown(maxLength);
51 def.collideConnected = collideConnected;
52 joint = (b2RopeJoint *)createJoint(&def);
53 }
54
~RopeJoint()55 RopeJoint::~RopeJoint()
56 {
57 }
58
getMaxLength() const59 float RopeJoint::getMaxLength() const
60 {
61 return Physics::scaleUp(joint->GetMaxLength());
62 }
63
setMaxLength(float maxLength)64 void RopeJoint::setMaxLength(float maxLength)
65 {
66 joint->SetMaxLength(Physics::scaleDown(maxLength));
67 }
68
69 } // box2d
70 } // physics
71 } // love
72