handlerSetTrans(cpCollisionHandler *handler, object unused)
{
cpCollisionHandler *copy = (cpCollisionHandler *)cpcalloc(1, sizeof(cpCollisionHandler));
(*copy) = (*handler);
return copy;
}
handlerSetEql(cpCollisionHandler *check, cpCollisionHandler *pair)
{
return ((check.a == pair.a && check.b == pair.b) || (check.b == pair.a && check.a == pair.b));
}
public override void OnEnter()
{
base.OnEnter();
platformInstance = new OneWayPlatform();
SetSubTitle("One way platforms are trivial in Chipmunk using a very simple collision callback.");
space.SetIterations(10);
space.SetGravity(new cpVect(0, -100));
cpBody body, 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), 0.0f));
shape.SetElasticity(1.0f);
shape.SetFriction(1.0f);
shape.SetFilter(NOT_GRABBABLE_FILTER);
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);
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 our one way segment
shape = space.AddShape(new cpSegmentShape(staticBody, new cpVect(-160, -100), new cpVect(160, -100), 10.0f));
shape.SetElasticity(1.0f);
shape.SetFriction(1.0f);
shape.SetCollisionType(COLLISION_TYPE_ONE_WAY);
shape.SetFilter(NOT_GRABBABLE_FILTER);
// We'll use the data pointer for the OneWayPlatform struct
platformInstance.n = new cpVect(0, 1); // let objects pass upwards
shape.userData = platformInstance;
// Add a ball to test it out
float radius = 15.0f;
body = space.AddBody(new cpBody(10.0f, cp.MomentForCircle(10.0f, 0.0f, radius, cpVect.Zero)));
body.SetPosition(new cpVect(0, -200));
body.SetVelocity(new cpVect(0, 170));
shape = space.AddShape(new cpCircleShape(body, radius, cpVect.Zero));
shape.SetElasticity(0.0f);
shape.SetFriction(0.9f);
shape.SetCollisionType(2);
cpCollisionHandler handler = space.AddWildcardHandler(COLLISION_TYPE_ONE_WAY);
handler.preSolveFunc = preSolve;
Schedule();
}
public override void OnEnter()
{
base.OnEnter();
space.SetIterations(5);
space.SetDamping(0.1f);
//space.defaultHandler.
cpCollisionHandler handler = space.AddWildcardHandler(COLLISION_TYPE_ONE_WAY);
handler.preSolveFunc = NeverCollide;
//space.def SetDefaultCollisionHandler(space, NeverCollide, NULL, NULL, NULL, NULL);
{
float mass = 1.0f;
float length = 100.0f;
cpVect a = new cpVect(-length / 2.0f, 0.0f), b = new cpVect(length / 2.0f, 0.0f);
cpBody body = space.AddBody(new cpBody(mass, cp.MomentForSegment(mass, a, b, 0.0f)));
body.SetPosition(new cpVect(-160.0f, -80.0f));
space.AddShape(new cpSegmentShape(body, a, b, 30.0f));
}
{
float mass = 1.0f;
float length = 100.0f;
cpVect a = new cpVect(-length / 2.0f, 0.0f), b = new cpVect(length / 2.0f, 0.0f);
cpBody body = space.AddBody(new cpBody(mass, cp.MomentForSegment(mass, a, b, 0.0f)));
body.SetPosition(new cpVect(-160.0f, 80.0f));
space.AddShape(new cpSegmentShape(body, a, b, 20.0f));
}
{
float mass = 1.0f;
int NUM_VERTS = 5;
cpVect[] verts = new cpVect[NUM_VERTS];
for (int i = 0; i < NUM_VERTS; i++)
{
float angle = -2 * cp.M_PI * i / NUM_VERTS;
verts[i] = new cpVect(40 * cp.cpfcos(angle), 40 * cp.cpfsin(angle));
}
cpBody body = space.AddBody(new cpBody(mass, cp.MomentForPoly(mass, NUM_VERTS, verts, cpVect.Zero, 0.0f)));
body.SetPosition(new cpVect(-0.0f, -80.0f));
space.AddShape(new cpPolyShape(body, NUM_VERTS, verts, 0.0f));
}
{
float mass = 1.0f;
int NUM_VERTS = 4;
cpVect[] verts = new cpVect[NUM_VERTS];
for (int i = 0; i < NUM_VERTS; i++)
{
float angle = -2 * cp.M_PI * i / NUM_VERTS;
verts[i] = new cpVect(60 * cp.cpfcos(angle), 60 * cp.cpfsin(angle));
}
cpBody body = space.AddBody(new cpBody(mass, cp.MomentForPoly(mass, NUM_VERTS, verts, cpVect.Zero, 0.0f)));
body.SetPosition(new cpVect(-0.0f, 80.0f));
space.AddShape(new cpPolyShape(body, NUM_VERTS, verts, 0));
}
{
float mass = 1.0f;
float r = 60.0f;
cpBody body = space.AddBody(new cpBody(mass, cp.Infinity));
body.SetPosition(new cpVect(160, -80));
space.AddShape(new cpCircleShape(body, r, cpVect.Zero));
}
{
float mass = 1.0f;
float r = 40.0f;
cpBody body = space.AddBody(new cpBody(mass, cp.Infinity));
body.SetPosition(new cpVect(160, 80));
space.AddShape(new cpCircleShape(body, r, cpVect.Zero));
}
Schedule();
}
public override void OnEnter()
{
base.OnEnter();
space.SetIterations(30);
space.SetGravity(new cpVect(0, -500));
space.SetSleepTimeThreshold(0.5f);
space.SetCollisionSlop(0.5f);
var staticBody = space.GetStaticBody();
// Create segments around the edge of the screen.
var 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);
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);
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);
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 the edges of the bucket
var bb = new cpBB(-300, -200, 100, 0);
var radius = 5.0f;
shape = space.AddShape(new cpSegmentShape(staticBody, new cpVect(bb.l, bb.b), new cpVect(bb.l, bb.t), radius));
shape.SetElasticity(1.0f);
shape.SetFriction(1.0f);
shape.SetFilter(NOT_GRABBABLE_FILTER);
shape = space.AddShape(new cpSegmentShape(staticBody, new cpVect(bb.r, bb.b), new cpVect(bb.r, bb.t), radius));
shape.SetElasticity(1.0f);
shape.SetFriction(1.0f);
shape.SetFilter(NOT_GRABBABLE_FILTER);
shape = space.AddShape(new cpSegmentShape(staticBody, new cpVect(bb.l, bb.b), new cpVect(bb.r, bb.b), radius));
shape.SetElasticity(1.0f);
shape.SetFriction(1.0f);
shape.SetFilter(NOT_GRABBABLE_FILTER);
// Add the sensor for the water.
shape = space.AddShape(cpPolyShape.BoxShape2(staticBody, bb, 0.0f));
shape.SetSensor(true);
shape.SetCollisionType(1);
}
{
float width = 200.0f;
float height = 50.0f;
float mass = 0.3f * FLUID_DENSITY * width * height;
var moment = cp.MomentForBox(mass, width, height);
cpBody body = space.AddBody(new cpBody(mass, moment));
body.SetPosition(new cpVect(-50, -100));
body.SetVelocity(new cpVect(0, -100));
body.SetAngularVelocity(1);
shape = space.AddShape(cpPolyShape.BoxShape(body, width, height, 0.0f));
shape.SetFriction(0.8f);
}
{
float width = 40.0f;
float height = width * 2;
float mass = 0.3f * FLUID_DENSITY * width * height;
float moment = cp.MomentForBox(mass, width, height);
cpBody body = space.AddBody(new cpBody(mass, moment));
body.SetPosition(new cpVect(-200, -50));
body.SetVelocity(new cpVect(0, -100));
body.SetAngularVelocity(1);
shape = space.AddShape(cpPolyShape.BoxShape(body, width, height, 0.0f));
shape.SetFriction(0.8f);
}
cpCollisionHandler handler = space.AddCollisionHandler(1, 0);
handler.preSolveFunc = waterPreSolve;
Schedule();
}
