+init

1 files changed, 195 insertions, 0 deletions

diff --git a/Client/ThirdParty/Box2D/testbed/tests/sensor.cpp b/Client/ThirdParty/Box2D/testbed/tests/sensor.cpp
new file mode 100644
index 0000000..613a0e9
--- /dev/null
+++ b/Client/ThirdParty/Box2D/testbed/tests/sensor.cpp
@@ -0,0 +1,195 @@
+// MIT License
+
+// Copyright (c) 2019 Erin Catto
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#include "test.h"
+#include "imgui/imgui.h"
+
+// This shows how to use sensor shapes. Sensors don't have collision, but report overlap events.
+class Sensors : public Test
+{
+public:
+
+	enum
+	{
+		e_count = 7
+	};
+
+	Sensors()
+	{
+		{
+			b2BodyDef bd;
+			b2Body* ground = m_world->CreateBody(&bd);
+
+			{
+				b2EdgeShape shape;
+				shape.SetTwoSided(b2Vec2(-40.0f, 0.0f), b2Vec2(40.0f, 0.0f));
+				ground->CreateFixture(&shape, 0.0f);
+			}
+
+#if 0
+			{
+				b2FixtureDef sd;
+				sd.SetAsBox(10.0f, 2.0f, b2Vec2(0.0f, 20.0f), 0.0f);
+				sd.isSensor = true;
+				m_sensor = ground->CreateFixture(&sd);
+			}
+#else
+			{
+				b2CircleShape shape;
+				shape.m_radius = 5.0f;
+				shape.m_p.Set(0.0f, 10.0f);
+
+				b2FixtureDef fd;
+				fd.shape = &shape;
+				fd.isSensor = true;
+				m_sensor = ground->CreateFixture(&fd);
+			}
+#endif
+		}
+
+		{
+			b2CircleShape shape;
+			shape.m_radius = 1.0f;
+
+			for (int32 i = 0; i < e_count; ++i)
+			{
+				b2BodyDef bd;
+				bd.type = b2_dynamicBody;
+				bd.position.Set(-10.0f + 3.0f * i, 20.0f);
+				bd.userData.pointer = i;
+
+				m_touching[i] = false;
+				m_bodies[i] = m_world->CreateBody(&bd);
+
+				m_bodies[i]->CreateFixture(&shape, 1.0f);
+			}
+		}
+
+		m_force = 100.0f;
+	}
+
+	// Implement contact listener.
+	void BeginContact(b2Contact* contact) override
+	{
+		b2Fixture* fixtureA = contact->GetFixtureA();
+		b2Fixture* fixtureB = contact->GetFixtureB();
+
+		if (fixtureA == m_sensor)
+		{
+			uintptr_t index = fixtureB->GetBody()->GetUserData().pointer;
+			if (index < e_count)
+			{
+				m_touching[index] = true;
+			}
+		}
+
+		if (fixtureB == m_sensor)
+		{
+			uintptr_t index = fixtureA->GetBody()->GetUserData().pointer;
+			if (index < e_count)
+			{
+				m_touching[index] = true;
+			}
+		}
+	}
+
+	// Implement contact listener.
+	void EndContact(b2Contact* contact) override
+	{
+		b2Fixture* fixtureA = contact->GetFixtureA();
+		b2Fixture* fixtureB = contact->GetFixtureB();
+
+		if (fixtureA == m_sensor)
+		{
+			uintptr_t index = fixtureB->GetBody()->GetUserData().pointer;
+			if (index < e_count)
+			{
+				m_touching[index] = false;
+			}
+		}
+
+		if (fixtureB == m_sensor)
+		{
+			uintptr_t index = fixtureA->GetBody()->GetUserData().pointer;
+			if (index < e_count)
+			{
+				m_touching[index] = false;
+			}
+		}
+	}
+
+	void UpdateUI() override
+	{
+		ImGui::SetNextWindowPos(ImVec2(10.0f, 100.0f));
+		ImGui::SetNextWindowSize(ImVec2(200.0f, 60.0f));
+		ImGui::Begin("Sensor Controls", nullptr, ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoResize);
+
+		ImGui::SliderFloat("Force", &m_force, 0.0f, 2000.0f, "%.0f");
+
+		ImGui::End();
+	}
+
+	void Step(Settings& settings) override
+	{
+		Test::Step(settings);
+
+		// Traverse the contact results. Apply a force on shapes
+		// that overlap the sensor.
+		for (int32 i = 0; i < e_count; ++i)
+		{
+			if (m_touching[i] == false)
+			{
+				continue;
+			}
+
+			b2Body* body = m_bodies[i];
+			b2Body* ground = m_sensor->GetBody();
+
+			b2CircleShape* circle = (b2CircleShape*)m_sensor->GetShape();
+			b2Vec2 center = ground->GetWorldPoint(circle->m_p);
+
+			b2Vec2 position = body->GetPosition();
+
+			b2Vec2 d = center - position;
+			if (d.LengthSquared() < FLT_EPSILON * FLT_EPSILON)
+			{
+				continue;
+			}
+
+			d.Normalize();
+			b2Vec2 F = m_force * d;
+			body->ApplyForce(F, position, false);
+		}
+	}
+
+	static Test* Create()
+	{
+		return new Sensors;
+	}
+
+	b2Fixture* m_sensor;
+	b2Body* m_bodies[e_count];
+	float m_force;
+	bool m_touching[e_count];
+};
+
+static int testIndex = RegisterTest("Collision", "Sensors", Sensors::Create);