public override void OnEnter()
{
base.OnEnter();
SetSubTitle("Use the mouse to drive the tank, it will follow the cursor.");
//Position = new CCPoint(240, 170);
space.SetIterations(10);
space.SetSleepTimeThreshold(0.5f);
cpBody staticBody = space.GetStaticBody();
cpShape shape;
// Create segments around the edge of the screen.
shape = space.AddShape(new cpSegmentShape(staticBody, new cpVect(-320, -240), new cpVect(-320, 240), 0));
shape.SetElasticity(1);
shape.SetFriction(1);
shape.SetFilter(NOT_GRABBABLE_FILTER);
shape = space.AddShape(new cpSegmentShape(staticBody, new cpVect(320, -240), new cpVect(320, 240), 0));
shape.SetElasticity(1);
shape.SetFriction(1);
shape.SetFilter(NOT_GRABBABLE_FILTER);
shape = space.AddShape(new cpSegmentShape(staticBody, new cpVect(-320, -240), new cpVect(320, -240), 0));
shape.SetElasticity(1);
shape.SetFriction(1);
shape.SetFilter(NOT_GRABBABLE_FILTER);
shape = space.AddShape(new cpSegmentShape(staticBody, new cpVect(-320, 240), new cpVect(320, 240), 0));
shape.SetElasticity(1);
shape.SetFriction(1);
shape.SetFilter(NOT_GRABBABLE_FILTER);
for (int i = 0; i < 50; i++)
{
cpBody body = add_box(20, 1);
cpConstraint pivot = space.AddConstraint(new cpPivotJoint(staticBody, body, cpVect.Zero, cpVect.Zero));
pivot.SetMaxBias(0); // disable joint correction
pivot.SetMaxForce(1000); // emulate linear friction
cpConstraint gear = space.AddConstraint(new cpGearJoint(staticBody, body, 0, 1));
gear.SetMaxBias(0); // disable joint correction
gear.SetMaxForce(5000); // emulate linear friction
}
// We joint the tank to the control body and control the tank indirectly by modifying the control body.
tankControlBody = space.AddBody(cpBody.NewKinematic());
tankBody = add_box(30, 10);
cpConstraint pivot2 = space.AddConstraint(new cpPivotJoint(tankControlBody, tankBody, cpVect.Zero, cpVect.Zero));
pivot2.SetMaxBias(0); // disable joint correction
pivot2.SetMaxForce(10000); // emulate linear friction
cpConstraint gears = space.AddConstraint(new cpGearJoint(tankControlBody, tankBody, 0, 1));
gears.SetErrorBias(0); // attempt to fully correct the joint each step
gears.SetMaxBias(1.2f); // but limit it's angular correction rate
gears.SetMaxForce(5000); // emulate angular friction
Schedule();
}
public override void OnEnter()
{
base.OnEnter();
SetSubTitle("Control the crane by moving the mouse. Right click to release.");
space.SetIterations(30);
space.SetGravity(new cpVect(0, -100));
space.SetDamping(0.8f);
cpBody staticBody = space.GetStaticBody();
cpShape shape;
shape = space.AddShape(new cpSegmentShape(staticBody, new cpVect(-320, -240), new cpVect(320, -240), 0.0f));
shape.SetElasticity(1.0f);
shape.SetFriction(1.0f);
shape.SetFilter(NOT_GRABBABLE_FILTER);
// Add a body for the dolly.
dollyBody = space.AddBody(new cpBody(10, cp.Infinity));
dollyBody.SetPosition(new cpVect(0, 100));
// Add a block so you can see it.
space.AddShape(cpPolyShape.BoxShape(dollyBody, 30, 30, 0.0f));
// Add a groove joint for it to move back and forth on.
space.AddConstraint(new cpGrooveJoint(staticBody, dollyBody, new cpVect(-250, 100), new cpVect(250, 100), cpVect.Zero));
// Add a pivot joint to act as a servo motor controlling it's position
// By updating the anchor points of the pivot joint, you can move the dolly.
dollyServo = space.AddConstraint(new cpPivotJoint(staticBody, dollyBody, dollyBody.GetPosition()));
// Max force the dolly servo can generate.
dollyServo.SetMaxForce(10000);
// Max speed of the dolly servo
dollyServo.SetMaxBias(100);
// You can also change the error bias to control how it slows down.
dollyServo.SetErrorBias(0.2f);
// Add the crane hook.
cpBody hookBody = space.AddBody(new cpBody(1, cp.Infinity));
hookBody.SetPosition(new cpVect(0, 50));
// Add a sensor shape for it. This will be used to figure out when the hook touches a box.
shape = space.AddShape(new cpCircleShape(hookBody, 10, cpVect.Zero));
shape.SetSensor(true);// cpTrue);
shape.SetCollisionType(((int)COLLISION_TYPES.HOOK_SENSOR));
// Add a slide joint to act as a winch motor
// By updating the max length of the joint you can make it pull up the load.
winchServo = space.AddConstraint(new cpSlideJoint(dollyBody, hookBody, cpVect.Zero, cpVect.Zero, 0, cp.Infinity));
// Max force the dolly servo can generate.
winchServo.SetMaxForce(30000);
// Max speed of the dolly servo
winchServo.SetMaxBias(60);
// TODO: cleanup
// Finally a box to play with
cpBody boxBody = space.AddBody(new cpBody(30, cp.MomentForBox(30, 50, 50)));
boxBody.SetPosition(new cpVect(200, -200));
// Add a block so you can see it.
shape = space.AddShape(cpPolyShape.BoxShape(boxBody, 50, 50, 0));
shape.SetFriction(0.7f);
shape.SetCollisionType(((int)COLLISION_TYPES.CRATE));
var handler = space.AddCollisionHandler(
(int)COLLISION_TYPES.HOOK_SENSOR,
(int)COLLISION_TYPES.CRATE);
handler.beginFunc = HookCrate;
Schedule();
}
