Initial Mercurial commit.

src/modules/physics/box2d/Body.cpp

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+/**
+* Copyright (c) 2006-2009 LOVE Development Team
+* 
+* This software is provided 'as-is', without any express or implied
+* warranty.  In no event will the authors be held liable for any damages
+* arising from the use of this software.
+* 
+* Permission is granted to anyone to use this software for any purpose,
+* including commercial applications, and to alter it and redistribute it
+* freely, subject to the following restrictions:
+* 
+* 1. The origin of this software must not be misrepresented; you must not
+*    claim that you wrote the original software. If you use this software
+*    in a product, an acknowledgment in the product documentation would be
+*    appreciated but is not required.
+* 2. Altered source versions must be plainly marked as such, and must not be
+*    misrepresented as being the original software.
+* 3. This notice may not be removed or altered from any source distribution.
+**/
+
+#include "Body.h"
+
+#include <common/math.h>
+
+#include "World.h"
+
+namespace love
+{
+namespace physics
+{
+namespace box2d
+{
+	Body::Body(World * world, b2Vec2 p, float m, float i)
+		: world(world)
+	{
+		world->retain();
+		b2BodyDef def;
+		def.position = world->scaleDown(p);
+		def.massData.mass = m;
+		def.massData.I = i;
+		body = world->world->CreateBody(&def);
+	}
+
+	Body::~Body()
+	{
+		world->world->DestroyBody(body);
+		world->release();
+		body = 0;
+	}
+
+	float Body::getX()
+	{
+		return world->scaleUp(body->GetPosition().x);
+	}
+
+	float Body::getY()
+	{
+		return world->scaleUp(body->GetPosition().y);
+	}
+
+	int Body::getPosition(lua_State * L)
+	{
+		return pushVector(L, world->scaleUp(body->GetPosition()));
+	}
+
+	int Body::getVelocity(lua_State * L)
+	{
+		return pushVector(L, world->scaleUp(body->GetLinearVelocity()));
+	}
+
+	float Body::getAngle()
+	{
+		return body->GetAngle();
+	}
+
+	int Body::getWorldCenter(lua_State * L)
+	{
+		return pushVector(L, world->scaleUp(body->GetWorldCenter()));
+	}
+
+	int Body::getLocalCenter(lua_State * L)
+	{
+		return pushVector(L, world->scaleUp(body->GetLocalCenter()));
+	}
+
+	float Body::getSpin() const
+	{
+		return body->GetAngularVelocity();
+	}
+
+	float Body::getMass() const
+	{
+		return body->GetMass();
+	}
+
+	float Body::getInertia() const
+	{
+		return body->GetInertia();
+	}
+
+	float Body::getAngularDamping() const
+	{
+		return body->m_angularDamping;
+	}
+
+	float Body::getDamping() const
+	{
+		return body->m_linearDamping;
+	}
+
+	void Body::applyImpulse(float jx, float jy)
+	{
+		body->ApplyImpulse(b2Vec2(jx, jy), world->scaleDown(body->GetWorldCenter()));
+	}
+
+	void Body::applyImpulse(float jx, float jy, float rx, float ry)
+	{
+		body->ApplyImpulse(b2Vec2(jx, jy), world->scaleDown(b2Vec2(rx, ry)));
+	}
+
+	void Body::applyTorque(float t)
+	{
+		body->ApplyTorque(t);
+	}
+
+	void Body::applyForce(float fx, float fy, float rx, float ry)
+	{
+		body->ApplyForce(b2Vec2(fx, fy), world->scaleDown(b2Vec2(rx, ry)));
+	}
+
+	void Body::applyForce(float fx, float fy)
+	{
+		body->ApplyForce(b2Vec2(fx, fy), world->scaleDown(body->GetWorldCenter()));
+	}
+
+	void Body::setX(float x)
+	{
+		body->SetXForm(world->scaleDown(b2Vec2(x, getY())), getAngle());
+	}
+
+	void Body::setY(float y)
+	{
+		body->SetXForm(world->scaleDown(b2Vec2(getX(), y)), getAngle());
+	}
+
+	void Body::setVelocity(float x, float y)
+	{
+		body->SetLinearVelocity(world->scaleDown(b2Vec2(x, y)));
+	}
+
+	void Body::setAngle(float d)
+	{
+		body->SetXForm(body->GetPosition(), d);
+	}
+
+	void Body::setSpin(float r)
+	{
+		body->SetAngularVelocity(r);
+	}
+
+	void Body::setPosition(float x, float y)
+	{
+		body->SetXForm(world->scaleDown(b2Vec2(x, y)), body->GetAngle());
+	}
+
+	void Body::setAngularDamping(float d)
+	{
+		body->m_angularDamping = d;
+	}
+
+	void Body::setDamping(float d)
+	{
+		body->m_linearDamping = d;
+	}
+
+	void Body::setMassFromShapes()
+	{
+		body->SetMassFromShapes();
+	}
+
+	void Body::setMass(float x, float y, float m, float i)
+	{
+		b2MassData massData;
+		massData.center = world->scaleDown(b2Vec2(x, y));
+		massData.mass = m;
+		massData.I = i;
+		body->SetMass(&massData);
+	}
+
+	int Body::getWorldPoint(lua_State * L)
+	{
+		b2Vec2 v = world->scaleDown(getVector(L));
+		return pushVector(L, world->scaleUp(body->GetWorldPoint(v)));
+	}
+
+	int Body::getWorldVector(lua_State * L)
+	{
+		b2Vec2 v = world->scaleDown(getVector(L));
+		return pushVector(L, world->scaleUp(body->GetWorldVector(v)));
+	}
+
+	int Body::getLocalPoint(lua_State * L)
+	{
+		b2Vec2 v = world->scaleDown(getVector(L));
+		return pushVector(L, world->scaleUp(body->GetLocalPoint(v)));
+	}
+
+	int Body::getLocalVector(lua_State * L)
+	{
+		b2Vec2 v = world->scaleDown(getVector(L));
+		return pushVector(L, world->scaleUp(body->GetLocalVector(v)));
+	}
+
+	int Body::getVelocityWorldPoint(lua_State * L)
+	{
+		b2Vec2 v = world->scaleDown(getVector(L));
+		return pushVector(L, world->scaleUp(body->GetLinearVelocityFromWorldPoint(v)));
+	}
+
+	int Body::getVelocityLocalPoint(lua_State * L)
+	{
+		b2Vec2 v = world->scaleDown(getVector(L));
+		return pushVector(L, world->scaleUp(body->GetLinearVelocityFromLocalPoint(v)));
+	}
+
+	bool Body::isBullet() const
+	{
+		return body->IsBullet();
+	}
+
+	void Body::setBullet(bool bullet)
+	{
+		return body->SetBullet(bullet);
+	}
+
+	bool Body::isStatic() const
+	{
+		return body->IsStatic();
+	}
+
+	bool Body::isDynamic() const
+	{
+		return body->IsDynamic();
+	}
+
+	bool Body::isFrozen() const
+	{
+		return body->IsFrozen();
+	}
+
+	bool Body::isSleeping() const
+	{
+		return body->IsSleeping();
+	}
+
+	void Body::setAllowSleep(bool allow)
+	{
+		body->AllowSleeping(true);
+	}
+
+	void Body::setSleep(bool sleep)
+	{
+		if(sleep)
+			body->PutToSleep();
+		else
+			body->WakeUp();
+	}
+
+	b2Vec2 Body::getVector(lua_State * L)
+	{
+		love::luax_assert_argc(L, 2, 2);
+		b2Vec2 v((float)lua_tonumber(L, 1), (float)lua_tonumber(L, 2));
+		lua_pop(L, 2);
+		return v;
+	}
+
+	int Body::pushVector(lua_State * L, const b2Vec2 & v)
+	{
+		lua_pushnumber(L, v.x);
+		lua_pushnumber(L, v.y);
+		return 2;
+	}
+
+} // box2d
+} // physics
+} // love