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Examples/Physics2DDemo: Add box grabbing

This commit is contained in:
SirLynix 2023-08-12 12:25:00 +02:00
parent 68ce2b2d00
commit c9fae3470a
1 changed files with 49 additions and 8 deletions
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49
examples/Physics2DDemo/main.cpp
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@ -39,7 +39,7 @@ int main(int argc, char* argv[])
Nz::Vector2f windowSize = Nz::Vector2f(window.GetSize());
physSytem.GetPhysWorld().SetGravity({ 0.f, -98.1f });
physSytem.GetPhysWorld().SetGravity({ 0.f, -313.f });
entt::handle viewer = world.CreateEntity();
{
@ -72,8 +72,8 @@ int main(int argc, char* argv[])
for (std::size_t x = 0; x < 30; ++x)
{
entt::handle spriteEntity = world.CreateEntity();
{
spriteEntity.emplace<Nz::NodeComponent>(Nz::Vector2f(windowSize.x * 0.5f + x * 48.f - 15.f * 48.f, windowSize.y / 2 + y * 48.f));
spriteEntity.emplace<Nz::NodeComponent>(Nz::Vector2f(windowSize.x * 0.5f + x * 32.f - 15.f * 32.f, windowSize.y / 2 + y * 48.f));
spriteEntity.emplace<Nz::GraphicsComponent>(boxSprite, 1);
auto& rigidBody = spriteEntity.emplace<Nz::ChipmunkRigidBody2DComponent>(boxSettings);
@ -81,7 +81,6 @@ int main(int argc, char* argv[])
//rigidBody.SetElasticity(0.99f);
}
}
}
entt::handle groundEntity = world.CreateEntity();
{
@ -123,6 +122,48 @@ int main(int argc, char* argv[])
Nz::PidController<Nz::Vector3f> headingController(0.5f, 0.f, 0.05f);
Nz::PidController<Nz::Vector3f> upController(1.f, 0.f, 0.1f);
std::optional<Nz::ChipmunkPivotConstraint2D> grabConstraint;
NazaraSlot(Nz::WindowEventHandler, OnMouseMoved, grabbedObjectMove);
Nz::WindowEventHandler& eventHandler = window.GetEventHandler();
eventHandler.OnMouseButtonPressed.Connect([&](const Nz::WindowEventHandler*, const Nz::WindowEvent::MouseButtonEvent& event)
{
if (event.button == Nz::Mouse::Left)
{
auto& viewerComponent = viewer.get<Nz::CameraComponent>();
Nz::Vector2f worldPos = Nz::Vector2f(viewerComponent.Unproject(Nz::Vector3f(event.x, event.y, 0.f)));
entt::handle nearestEntity;
if (physSytem.NearestBodyQuery(worldPos, 1.f, 0, 0xFFFFFFFF, 0xFFFFFFFF, &nearestEntity))
{
if (nearestEntity && nearestEntity != groundEntity)
{
grabConstraint.emplace(nearestEntity.get<Nz::ChipmunkRigidBody2DComponent>(), worldPos);
grabbedObjectMove.Connect(eventHandler.OnMouseMoved, [&, nearestEntity, viewer](const Nz::WindowEventHandler*, const Nz::WindowEvent::MouseMoveEvent& event)
{
auto& viewerComponent = viewer.get<Nz::CameraComponent>();
Nz::Vector2f worldPos = Nz::Vector2f(viewerComponent.Unproject(Nz::Vector3f(event.x, event.y, 0.f)));
auto& rigidBody = nearestEntity.get<Nz::ChipmunkRigidBody2DComponent>();
grabConstraint->SetFirstAnchor(worldPos);
});
}
}
}
});
eventHandler.OnMouseButtonReleased.Connect([&](const Nz::WindowEventHandler*, const Nz::WindowEvent::MouseButtonEvent& event)
{
if (event.button == Nz::Mouse::Left)
{
grabConstraint.reset();
grabbedObjectMove.Disconnect();
}
});
app.AddUpdaterFunc([&]
{
fps++;