cpSpace*
cpSpaceInit(cpSpace *space)
{
#ifndef NDEBUG
static cpBool done = cpFalse;
if(!done){
printf("Initializing cpSpace - Chipmunk v%s (Debug Enabled)\n", cpVersionString);
printf("Compile with -DNDEBUG defined to disable debug mode and runtime assertion checks\n");
done = cpTrue;
}
#endif
space->iterations = 10;
space->gravity = cpvzero;
space->damping = 1.0f;
space->collisionSlop = 0.1f;
space->collisionBias = cpfpow(1.0f - 0.1f, 60.0f);
space->collisionPersistence = 3;
space->locked = 0;
space->stamp = 0;
space->staticShapes = cpBBTreeNew((cpSpatialIndexBBFunc)cpShapeGetBB, NULL);
space->activeShapes = cpBBTreeNew((cpSpatialIndexBBFunc)cpShapeGetBB, space->staticShapes);
cpBBTreeSetVelocityFunc(space->activeShapes, (cpBBTreeVelocityFunc)shapeVelocityFunc);
space->allocatedBuffers = cpArrayNew(0);
space->bodies = cpArrayNew(0);
space->sleepingComponents = cpArrayNew(0);
space->rousedBodies = cpArrayNew(0);
space->sleepTimeThreshold = INFINITY;
space->idleSpeedThreshold = 0.0f;
space->enableContactGraph = cpFalse;
space->arbiters = cpArrayNew(0);
space->pooledArbiters = cpArrayNew(0);
space->contactBuffersHead = NULL;
space->cachedArbiters = cpHashSetNew(0, (cpHashSetEqlFunc)arbiterSetEql);
space->constraints = cpArrayNew(0);
space->defaultHandler = cpDefaultCollisionHandler;
space->collisionHandlers = cpHashSetNew(0, (cpHashSetEqlFunc)handlerSetEql);
cpHashSetSetDefaultValue(space->collisionHandlers, &cpDefaultCollisionHandler);
space->postStepCallbacks = NULL;
space->arbiterApplyImpulse = cpArbiterApplyImpulse;
cpBodyInitStatic(&space->_staticBody);
space->staticBody = &space->_staticBody;
return space;
}
void
cpSpaceSetDefaultCollisionHandler(
cpSpace *space,
cpCollisionBeginFunc begin,
cpCollisionPreSolveFunc preSolve,
cpCollisionPostSolveFunc postSolve,
cpCollisionSeparateFunc separate,
void *data
){
cpAssertSpaceUnlocked(space);
cpCollisionHandler handler = {
0, 0,
begin ? begin : alwaysCollide,
preSolve ? preSolve : alwaysCollide,
postSolve ? postSolve : nothing,
separate ? separate : nothing,
data
};
space->defaultHandler = handler;
cpHashSetSetDefaultValue(space->collisionHandlers, &space->defaultHandler);
}