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#include <NR_Utils.hpp>
#include <Agent.hpp>
#include <Stage.hpp>
using namespace std;
ssize_t
pMod(ssize_t n, ssize_t d)
{
return (n % d + d) % d;
}
float
dist(const b2Vec2& a, const b2Vec2 b)
{
auto x = a.x - b.x;
auto y = a.y - b.y;
return sqrt(x * x + y * y);
}
float
dotP(const b2Vec2& a, const b2Vec2 b)
{
return a.x * b.x + a.y * b.y;
}
float32
RayCastCallback::ReportFixture(b2Fixture* fixture, const b2Vec2& point, const b2Vec2& normal, float32 fraction)
{
if (fixture->GetFilterData().groupIndex == -1 || fixture->IsSensor()) {
return -1.0f;
}
_fixture = fixture;
_fraction = 1.0f - fraction;
return fraction;
}
bool
QueryCallback::ReportFixture(b2Fixture* fixture)
{
_fixture = fixture;
return false;
}
bool
TrapCallback::ReportFixture(b2Fixture* fixture)
{
if (fixture->GetBody()->GetType() != b2_dynamicBody) {
return true;
}
Agent& agent = *static_cast<Agent*>(fixture->GetUserData());
agent._isOnTrap = true;
agent._body->SetLinearVelocity({ 0.0f, 0.0f });
agent._body->SetAngularVelocity(0.0f);
return true;
}
void
ContactListener::BeginContact(b2Contact* contact)
{
b2Fixture* fixA = contact->GetFixtureA();
b2Fixture* fixB = contact->GetFixtureB();
if (!fixA->IsSensor() && !fixB->IsSensor()) {
return;
}
Agent* agent = nullptr;
b2Fixture* check = nullptr;
if (fixA->IsSensor()) {
check = fixA;
agent = static_cast<Agent*>(fixB->GetUserData());
} else {
check = fixB;
agent = static_cast<Agent*>(fixA->GetUserData());
}
if (check->GetUserData() == agent->_nextCheckPoint) {
agent->incrementCheckPoint(*_stage);
}
}
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