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Adds motors to revolute joints and prismatic joints

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This commit is contained in:
Viktor Lidholt 2015-10-26 13:24:08 -07:00
parent 515d7109ef
commit 4d76182ba9
1 changed files with 95 additions and 3 deletions
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98
packages/flutter_sprites/lib/src/physics_joint.dart
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@ -82,8 +82,14 @@ class PhysicsJointRevolute extends PhysicsJoint {
this.upperAngle: 0.0,
this.enableLimit: false,
PhysicsJointBreakCallback breakCallback,
double breakingForce
double breakingForce,
bool enableMotor: false,
double motorSpeed: 0.0,
double maxMotorTorque: 0.0
}) : super(bodyA, bodyB, breakingForce, breakCallback) {
_enableMotor = enableMotor;
_motorSpeed = motorSpeed;
_maxMotorTorque = maxMotorTorque;
_completeCreation();
}
@ -92,6 +98,42 @@ class PhysicsJointRevolute extends PhysicsJoint {
final double upperAngle;
final bool enableLimit;
bool _enableMotor;
bool get enableMotor => _enableMotor;
set enableMotor(bool enableMotor) {
_enableMotor = enableMotor;
if (_joint != null) {
box2d.RevoluteJoint revoluteJoint = _joint;
revoluteJoint.enableMotor(enableMotor);
}
}
double _motorSpeed;
double get motorSpeed => _motorSpeed;
set motorSpeed(double motorSpeed) {
_motorSpeed = motorSpeed;
if (_joint != null) {
box2d.RevoluteJoint revoluteJoint = _joint;
revoluteJoint.setMotorSpeed(radians(motorSpeed));
}
}
double _maxMotorTorque;
double get maxMotorTorque => _maxMotorTorque;
set maxMotorTorque(double maxMotorTorque) {
_maxMotorTorque = maxMotorTorque;
if (_joint != null) {
box2d.RevoluteJoint revoluteJoint = _joint;
revoluteJoint.setMaxMotorTorque(maxMotorTorque);
}
}
box2d.Joint _createB2Joint(PhysicsWorld physicsNode) {
// Create Joint Definition
Vector2 vecAnchor = new Vector2(
@ -105,6 +147,10 @@ class PhysicsJointRevolute extends PhysicsJoint {
b2Def.lowerAngle = lowerAngle;
b2Def.upperAngle = upperAngle;
b2Def.enableMotor = _enableMotor;
b2Def.motorSpeed = _motorSpeed;
b2Def.maxMotorTorque = _maxMotorTorque;
// Create joint
return physicsNode.b2World.createJoint(b2Def);
}
@ -116,17 +162,63 @@ class PhysicsJointPrismatic extends PhysicsJoint {
PhysicsBody bodyB,
this.axis, {
double breakingForce,
PhysicsJointBreakCallback breakCallback
PhysicsJointBreakCallback breakCallback,
bool enableMotor: false,
double motorSpeed: 0.0,
double maxMotorForce: 0.0
}
) : super(bodyA, bodyB, breakingForce, breakCallback) {
_enableMotor = enableMotor;
_motorSpeed = motorSpeed;
_maxMotorForce = maxMotorForce;
_completeCreation();
}
Offset axis;
final Offset axis;
bool _enableMotor;
bool get enableMotor => _enableMotor;
set enableMotor(bool enableMotor) {
_enableMotor = enableMotor;
if (_joint != null) {
box2d.PrismaticJoint prismaticJoint = _joint;
prismaticJoint.enableMotor(enableMotor);
}
}
double _motorSpeed;
double get motorSpeed => _motorSpeed;
set motorSpeed(double motorSpeed) {
_motorSpeed = motorSpeed;
if (_joint != null) {
box2d.PrismaticJoint prismaticJoint = _joint;
prismaticJoint.setMotorSpeed(motorSpeed / _physicsNode.b2WorldToNodeConversionFactor);
}
}
double _maxMotorForce;
double get maxMotorForce => _maxMotorForce;
set maxMotorForce(double maxMotorForce) {
_maxMotorForce = maxMotorForce;
if (_joint != null) {
box2d.PrismaticJoint prismaticJoint = _joint;
prismaticJoint.setMaxMotorForce(maxMotorForce / _physicsNode.b2WorldToNodeConversionFactor);
}
}
box2d.Joint _createB2Joint(PhysicsWorld physicsNode) {
box2d.PrismaticJointDef b2Def = new box2d.PrismaticJointDef();
b2Def.initialize(bodyA._body, bodyB._body, bodyA._body.position, new Vector2(axis.dx, axis.dy));
b2Def.enableMotor = _enableMotor;
b2Def.motorSpeed = _motorSpeed;
b2Def.maxMotorForce = _maxMotorForce;
return physicsNode.b2World.createJoint(b2Def);
}
}