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Add callback when physics joints break

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This commit is contained in:
Viktor Lidholt 2015-10-13 13:51:15 -07:00
parent 2feb51d6bc
commit 8f65e0cb34
1 changed files with 30 additions and 14 deletions
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44
packages/flutter_sprites/lib/physics_joint.dart
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@ -1,7 +1,9 @@
part of skysprites;
typedef void PhysicsJointBreakCallback(PhysicsJoint joint);
abstract class PhysicsJoint {
PhysicsJoint(this._bodyA, this._bodyB, this.breakingForce) {
PhysicsJoint(this._bodyA, this._bodyB, this.breakingForce, this.breakCallback) {
bodyA._joints.add(this);
bodyB._joints.add(this);
}
@ -16,6 +18,8 @@ abstract class PhysicsJoint {
final double breakingForce;
final PhysicsJointBreakCallback breakCallback;
bool _active = true;
box2d.Joint _joint;
@ -58,9 +62,12 @@ abstract class PhysicsJoint {
_joint.getReactionForce(1.0 / dt, reactionForce);
if (breakingForce * breakingForce < reactionForce.length2) {
// TODO: Add callback
// Destroy the joint
destroy();
// Notify any observer
if (breakCallback != null)
breakCallback(this);
}
}
}
@ -74,8 +81,9 @@ class PhysicsJointRevolute extends PhysicsJoint {
this.lowerAngle: 0.0,
this.upperAngle: 0.0,
this.enableLimit: false,
PhysicsJointBreakCallback breakCallback,
double breakingForce
}) : super(bodyA, bodyB, breakingForce) {
}) : super(bodyA, bodyB, breakingForce, breakCallback) {
_completeCreation();
}
@ -107,9 +115,10 @@ class PhysicsJointPrismatic extends PhysicsJoint {
PhysicsBody bodyA,
PhysicsBody bodyB,
this.axis, {
double breakingForce
double breakingForce,
PhysicsJointBreakCallback breakCallback
}
) : super(bodyA, bodyB, breakingForce) {
) : super(bodyA, bodyB, breakingForce, breakCallback) {
_completeCreation();
}
@ -127,10 +136,11 @@ class PhysicsJointWeld extends PhysicsJoint {
PhysicsBody bodyA,
PhysicsBody bodyB, {
double breakingForce,
PhysicsJointBreakCallback breakCallback,
this.dampening: 0.0,
this.frequency: 0.0
}
) : super(bodyA, bodyB, breakingForce) {
) : super(bodyA, bodyB, breakingForce, breakCallback) {
_completeCreation();
}
@ -159,9 +169,10 @@ class PhysicsJointPulley extends PhysicsJoint {
this.anchorA,
this.anchorB,
this.ratio, {
double breakingForce
double breakingForce,
PhysicsJointBreakCallback breakCallback
}
) : super(bodyA, bodyB, breakingForce) {
) : super(bodyA, bodyB, breakingForce, breakCallback) {
_completeCreation();
}
@ -191,9 +202,10 @@ class PhysicsJointGear extends PhysicsJoint {
PhysicsBody bodyA,
PhysicsBody bodyB, {
double breakingForce,
PhysicsJointBreakCallback breakCallback,
this.ratio: 0.0
}
) : super(bodyA, bodyB, breakingForce) {
) : super(bodyA, bodyB, breakingForce, breakCallback) {
_completeCreation();
}
@ -216,11 +228,12 @@ class PhysicsJointDistance extends PhysicsJoint {
this.anchorA,
this.anchorB, {
double breakingForce,
PhysicsJointBreakCallback breakCallback,
this.length,
this.dampening: 0.0,
this.frequency: 0.0
}
) : super(bodyA, bodyB, breakingForce) {
) : super(bodyA, bodyB, breakingForce, breakCallback) {
_completeCreation();
}
@ -254,10 +267,11 @@ class PhysicsJointWheel extends PhysicsJoint {
this.anchor,
this.axis, {
double breakingForce,
PhysicsJointBreakCallback breakCallback,
this.dampening: 0.0,
this.frequency: 0.0
}
) : super(bodyA, bodyB, breakingForce) {
) : super(bodyA, bodyB, breakingForce, breakCallback) {
_completeCreation();
}
@ -287,10 +301,11 @@ class PhysicsJointFriction extends PhysicsJoint {
PhysicsBody bodyB,
this.anchor, {
double breakingForce,
PhysicsJointBreakCallback breakCallback,
this.maxForce: 0.0,
this.maxTorque: 0.0
}
) : super(bodyA, bodyB, breakingForce) {
) : super(bodyA, bodyB, breakingForce, breakCallback) {
_completeCreation();
}
@ -315,10 +330,11 @@ class PhysicsJointConstantVolume extends PhysicsJoint {
PhysicsJointConstantVolume(
this.bodies, {
double breakingForce,
PhysicsJointBreakCallback breakCallback,
this.dampening,
this.frequency
}
) : super(null, null, breakingForce) {
) : super(null, null, breakingForce, breakCallback) {
assert(bodies.length > 2);
_bodyA = bodies[0];
_bodyB = bodies[1];