1/**
2 * Copyright (c) 2006-2023 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 "PulleyJoint.h"
22
23// Module
24#include "Body.h"
25#include "World.h"
26#include "Physics.h"
27
28namespace love
29{
30namespace physics
31{
32namespace box2d
33{
34
35love::Type PulleyJoint::type("PulleyJoint", &Joint::type);
36
37PulleyJoint::PulleyJoint(Body *bodyA, Body *bodyB, b2Vec2 groundAnchorA, b2Vec2 groundAnchorB, b2Vec2 anchorA, b2Vec2 anchorB, float ratio, bool collideConnected)
38 : Joint(bodyA, bodyB)
39 , joint(NULL)
40{
41 b2PulleyJointDef def;
42 def.Initialize(bodyA->body, bodyB->body, Physics::scaleDown(groundAnchorA), Physics::scaleDown(groundAnchorB), \
43 Physics::scaleDown(anchorA), Physics::scaleDown(anchorB), ratio);
44 def.collideConnected = collideConnected;
45
46 joint = (b2PulleyJoint *)createJoint(&def);
47}
48
49PulleyJoint::~PulleyJoint()
50{
51}
52
53int PulleyJoint::getGroundAnchors(lua_State *L)
54{
55 lua_pushnumber(L, Physics::scaleUp(joint->GetGroundAnchorA().x));
56 lua_pushnumber(L, Physics::scaleUp(joint->GetGroundAnchorA().y));
57 lua_pushnumber(L, Physics::scaleUp(joint->GetGroundAnchorB().x));
58 lua_pushnumber(L, Physics::scaleUp(joint->GetGroundAnchorB().y));
59 return 4;
60}
61
62float PulleyJoint::getLengthA() const
63{
64 return Physics::scaleUp(joint->GetLengthA());
65}
66
67float PulleyJoint::getLengthB() const
68{
69 return Physics::scaleUp(joint->GetLengthB());
70}
71
72float PulleyJoint::getRatio() const
73{
74 return joint->GetRatio();
75}
76
77} // box2d
78} // physics
79} // love
80