cpFloat Spring::springForceFunc(cpConstraint *constraint, cpFloat dist){
Spring* spring = (Spring*)cpConstraintGetUserData(constraint);
if(spring->forceFunction){
return spring->forceFunction(spring, dist);
}
return 0;
}
mrb_value
mrb_cp_constraint_get_mrb_obj(mrb_state *mrb, const cpConstraint *constraint)
{
struct mrb_cp_constraint_user_data *user_data;
user_data = cpConstraintGetUserData(constraint);
if (user_data) {
return user_data->constraint;
} else {
return mrb_nil_value();
}
}
void
mrb_cp_constraint_free(mrb_state *mrb, void *ptr)
{
cpConstraint *constraint = ptr;
mrb_cp_constraint_user_data *user_data;
if (constraint) {
user_data = cpConstraintGetUserData(constraint);
if (user_data) {
mrb_cp_constraint_user_data_free(mrb, user_data);
}
cpConstraintFree(constraint);
}
}
Body::~Body(){
if(body){
//clean up all constraints
constraintsToRemove.clear();
cpBodyEachConstraint(body, &constraintRemoveQuery, (void*)this);
for(auto c: constraintsToRemove){
((Constraint*)cpConstraintGetUserData(c))->constraint = nullptr;
cpSpaceRemoveConstraint(cpConstraintGetSpace(c), c);
cpConstraintDestroy(c);
}
//remove body
cpSpaceRemoveBody(cpBodyGetSpace(body), body);
cpBodyFree(body);
body = nullptr;
}
}