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Physics2D tests (#129)

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* Quaternion: Fix singularity on Z axis when converting to euler angles

* CollisionComponent2D: Add method to retrieve AABB

* Collider2D: Fix constructor for Box with Vector2

* Physics2D: Fix rotation (Chipmunk works with radian and Nazara degrees) and copy constructor of RigidBody2D

* Colider2D: Add New for convex and tests for the new classes
This commit is contained in:
Gawaboumga
2017-08-20 21:47:23 +02:00
committed by Jérôme Leclercq
parent 9806231b5c
commit 41a1b5d493
12 changed files with 860 additions and 37 deletions
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134
tests/SDK/NDK/Systems/PhysicsSystem2D.cpp
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@@ -5,19 +5,19 @@
#include <NDK/Components/PhysicsComponent2D.hpp>
#include <Catch/catch.hpp>
Ndk::EntityHandle CreateBaseEntity(Ndk::World& world, const Nz::Vector2f& position, const Nz::Rectf AABB);
SCENARIO("PhysicsSystem2D", "[NDK][PHYSICSSYSTEM2D]")
{
GIVEN("A world and an entity")
{
Ndk::World world;
const Ndk::EntityHandle& entity = world.CreateEntity();
Ndk::NodeComponent& nodeComponent = entity->AddComponent<Ndk::NodeComponent>();
Nz::Vector2f position(2.f, 3.f);
nodeComponent.SetPosition(position);
Nz::Rectf aabb(0.f, 0.f, 16.f, 18.f);
Nz::BoxCollider2DRef collisionBox = Nz::BoxCollider2D::New(aabb);
Ndk::CollisionComponent2D& collisionComponent = entity->AddComponent<Ndk::CollisionComponent2D>(collisionBox);
Ndk::PhysicsComponent2D& physicsComponent = entity->AddComponent<Ndk::PhysicsComponent2D>();
Nz::Rectf movingAABB(0.f, 0.f, 16.f, 18.f);
Ndk::EntityHandle movingEntity = CreateBaseEntity(world, position, movingAABB);
Ndk::NodeComponent& nodeComponent = movingEntity->GetComponent<Ndk::NodeComponent>();
Ndk::PhysicsComponent2D& physicsComponent2D = movingEntity->AddComponent<Ndk::PhysicsComponent2D>();
WHEN("We update the world")
{
@@ -26,9 +26,123 @@ SCENARIO("PhysicsSystem2D", "[NDK][PHYSICSSYSTEM2D]")
THEN("Entity should have correct bounding box")
{
REQUIRE(nodeComponent.GetPosition() == position);
aabb.Translate(position);
REQUIRE(physicsComponent.GetAABB() == aabb);
movingAABB.Translate(position);
REQUIRE(physicsComponent2D.GetAABB() == movingAABB);
}
}
WHEN("We make it collide with a wall")
{
int rawDistance = 3;
Nz::Vector2f distance(rawDistance, 0.f);
Nz::Vector2f wallPosition = position + Nz::Vector2f(movingAABB.width, 0.f) + distance;
Nz::Rectf wallAABB(0.f, 0.f, 100.f, 100.f);
Ndk::EntityHandle wallEntity = CreateBaseEntity(world, wallPosition, wallAABB);
world.Update(1.f);
THEN("It should moved freely")
{
REQUIRE(nodeComponent.GetPosition() == position);
movingAABB.Translate(position);
REQUIRE(physicsComponent2D.GetAABB() == movingAABB);
physicsComponent2D.SetVelocity(Nz::Vector2f::UnitX());
for (int i = 0; i < rawDistance; ++i)
{
world.Update(1.f);
position += Nz::Vector2f::UnitX();
REQUIRE(nodeComponent.GetPosition() == position);
movingAABB.Translate(Nz::Vector2f::UnitX());
REQUIRE(physicsComponent2D.GetAABB() == movingAABB);
}
}
AND_THEN("It should be stopped by it")
{
world.Update(1.f);
REQUIRE(nodeComponent.GetPosition().SquaredDistance(position) < 0.1f);
}
}
}
}
GIVEN("A world and a simple entity")
{
Ndk::World world;
Nz::Vector2f position(0.f, 0.f);
Nz::Rectf movingAABB(0.f, 0.f, 1.f, 2.f);
Ndk::EntityHandle movingEntity = CreateBaseEntity(world, position, movingAABB);
Ndk::NodeComponent& nodeComponent = movingEntity->GetComponent<Ndk::NodeComponent>();
Ndk::PhysicsComponent2D& physicsComponent2D = movingEntity->AddComponent<Ndk::PhysicsComponent2D>();
WHEN("We make rotate our entity")
{
float angularSpeed = Nz::FromDegrees(45.f);
physicsComponent2D.SetAngularVelocity(angularSpeed);
world.Update(2.f);
THEN("It should have been rotated")
{
CHECK(physicsComponent2D.GetAngularVelocity() == angularSpeed);
CHECK(physicsComponent2D.GetAABB() == Nz::Rectf(-2.f, 0.f, 2.f, 1.f));
CHECK(physicsComponent2D.GetRotation() == Approx(Nz::FromDegrees(90.f)));
CHECK(nodeComponent.GetRotation().ToEulerAngles().roll == Approx(Nz::FromDegrees(90.f)));
}
}
WHEN("We put a force on it")
{
float stepSize = world.GetSystem<Ndk::PhysicsSystem2D>().GetWorld().GetStepSize();
Nz::Vector2f velocity = Nz::Vector2f::UnitX();
physicsComponent2D.AddForce(velocity / stepSize);
world.Update(1.f);
THEN("Velocity should be the one targetted")
{
REQUIRE(physicsComponent2D.GetVelocity() == velocity);
world.Update(99.f);
REQUIRE(physicsComponent2D.GetPosition().Distance(Nz::Vector2f::UnitX() * 100.f) < 1.f);
REQUIRE(nodeComponent.GetPosition().Distance(Nz::Vector2f::UnitX() * 100.f) < 1.f);
}
}
}
GIVEN("A world and a simple entity not at the origin")
{
Ndk::World world;
Nz::Vector2f position(3.f, 4.f);
Nz::Rectf movingAABB(0.f, 0.f, 1.f, 2.f);
Ndk::EntityHandle movingEntity = CreateBaseEntity(world, position, movingAABB);
Ndk::NodeComponent& nodeComponent = movingEntity->GetComponent<Ndk::NodeComponent>();
Ndk::PhysicsComponent2D& physicsComponent2D = movingEntity->AddComponent<Ndk::PhysicsComponent2D>();
WHEN("We make rotate our entity")
{
float angularSpeed = Nz::FromDegrees(45.f);
physicsComponent2D.SetAngularVelocity(angularSpeed);
world.Update(2.f);
THEN("It should have been rotated")
{
CHECK(physicsComponent2D.GetAngularVelocity() == angularSpeed);
CHECK(physicsComponent2D.GetAABB() == Nz::Rectf(1.f, 4.f, 2.f, 1.f));
CHECK(physicsComponent2D.GetRotation() == Approx(Nz::FromDegrees(90.f)));
CHECK(nodeComponent.GetPosition() == position);
CHECK(nodeComponent.GetRotation().ToEulerAngles().roll == Approx(Nz::FromDegrees(90.f)));
}
}
}
}
Ndk::EntityHandle CreateBaseEntity(Ndk::World& world, const Nz::Vector2f& position, const Nz::Rectf AABB)
{
Ndk::EntityHandle entity = world.CreateEntity();
Ndk::NodeComponent& nodeComponent = entity->AddComponent<Ndk::NodeComponent>();
nodeComponent.SetPosition(position);
Nz::BoxCollider2DRef collisionBox = Nz::BoxCollider2D::New(AABB);
entity->AddComponent<Ndk::CollisionComponent2D>(collisionBox);
return entity;
}