X-Git-Url: https://git.dogcows.com/gitweb?p=chaz%2Fyoink;a=blobdiff_plain;f=src%2FCharacter.cc;h=e0ce1c05c016afa66b9ff4612f125808bc2cade4;hp=b26f2d4f06b2432da563d7c791594d26ecdc6530;hb=64bd443538f57ad1bdff6c6b35953e72141129b2;hpb=23d8f7a5fbd1eca7f46f2342c20ac5e28ae0128a

diff --git a/src/Character.cc b/src/Character.cc
index b26f2d4..e0ce1c0 100644
--- a/src/Character.cc
+++ b/src/Character.cc
@@ -56,17 +56,21 @@ private:
 	Mf::Vector2 location;
 };
 
-struct WindResistenceForce
+struct ResistanceForce
 {
+	explicit ResistanceForce(Mf::Scalar scale = 1.0) :
+		k(scale) {}
+
 	const Mf::Vector2& operator () (const Mf::LinearState<2>& state)
 	{
-		force = -2.0 * state.velocity;
+		force = -k * state.velocity;
 		return force;
 	}
 
 private:
 
-	Mf::Vector2 force;
+	Mf::Vector2	force;
+	Mf::Scalar	k;
 };
 
 
@@ -79,11 +83,11 @@ Character::Character(const std::string& name) :
 	current.mass = 1.0;
 	current.inverseMass = 1.0 / current.mass;
 
-	// gravity
-	current.force = Mf::Vector2(0.0, 000.0);
+	// forces
+	current.force = Mf::Vector2(0.0, 0.0);
 	current.forces.push_back(SpringForce(Mf::Vector2(500.0, 200.0)));
-	current.forces.push_back(WindResistenceForce());
-	current.forces.push_back(Mf::LinearState<2>::GravityForce(-2000.0));
+	current.forces.push_back(ResistanceForce(2.0));
+	current.forces.push_back(Mf::LinearState<2>::GravityForce(-1000.0));
 
 	// starting position
 	current.position = Mf::Vector2(64.0, 64.0);
@@ -114,11 +118,15 @@ void Character::update(Mf::Scalar t, Mf::Scalar dt)
 
 	//Mf::euler<State,Derivative>(current, t, dt);
 
-	//current.force = Mf::Vector2(0.0, -2000.0);
-	current.force = userForce;
 	current.integrate(t, dt);
-
 	animation.update(t, dt);
+
+	Mf::Vector3 center(current.position[0], current.position[1], z);
+	Mf::Vector3 a(current.position[0] - 16.0, current.position[1] - 16.0, z);
+	Mf::Vector3 b(current.position[0] + 16.0, current.position[1] + 16.0, z);
+
+	aabb_.init(a, b);
+	sphere_.init(center, a);
 }
 
 
@@ -164,5 +172,131 @@ void Character::draw(Mf::Scalar alpha) const
 }
 
 
+bool Character::isInsideAabb(const Mf::Aabb& aabb) const
+{
+	// make sure the entity is fully inside the volume
+	if (!(aabb_.max[0] < aabb.max[0] &&
+		  aabb_.min[0] > aabb.min[0] &&
+		  aabb_.max[1] < aabb.max[1] &&
+		  aabb_.min[1] > aabb.min[1] &&
+		  aabb_.max[2] < aabb.max[2] &&
+		  aabb_.min[2] > aabb.min[2]))
+	{
+		return false;
+	}
+
+	return true;
+}
+
+int Character::getOctant(const Mf::Aabb& aabb) const
+{
+	int octantNum = -1;
+
+	Mf::Plane::Halfspace halfspace;
+
+	Mf::Plane xy = aabb.getPlaneXY();
+	halfspace = xy.intersects(sphere_);
+	if (halfspace == Mf::Plane::INTERSECT)
+	{
+		halfspace = xy.intersects(aabb_);
+	}
+
+	if (halfspace == Mf::Plane::POSITIVE)
+	{
+		Mf::Plane xz = aabb.getPlaneXZ();
+		halfspace = xz.intersects(sphere_);
+		if (halfspace == Mf::Plane::INTERSECT)
+		{
+			halfspace = xz.intersects(aabb_);
+		}
+
+		if (halfspace == Mf::Plane::POSITIVE)
+		{
+			Mf::Plane yz = aabb.getPlaneYZ();
+			halfspace = yz.intersects(sphere_);
+			if (halfspace == Mf::Plane::INTERSECT)
+			{
+				halfspace = yz.intersects(aabb_);
+			}
+
+			if (halfspace == Mf::Plane::POSITIVE)
+			{
+				octantNum = 2;
+			}
+			else if (halfspace == Mf::Plane::NEGATIVE)
+			{
+				octantNum = 3;
+			}
+		}
+		else if (halfspace == Mf::Plane::NEGATIVE)
+		{
+			Mf::Plane yz = aabb.getPlaneYZ();
+			halfspace = yz.intersects(sphere_);
+			if (halfspace == Mf::Plane::INTERSECT)
+			{
+				halfspace = yz.intersects(aabb_);
+			}
+
+			if (halfspace == Mf::Plane::POSITIVE)
+			{
+				octantNum = 1;
+			}
+			else if (halfspace == Mf::Plane::NEGATIVE)
+			{
+				octantNum = 0;
+			}
+		}
+	}
+	else if (halfspace == Mf::Plane::NEGATIVE)
+	{
+		Mf::Plane xz = aabb.getPlaneXZ();
+		halfspace = xz.intersects(sphere_);
+		if (halfspace == Mf::Plane::INTERSECT)
+		{
+			halfspace = xz.intersects(aabb_);
+		}
+
+		if (halfspace == Mf::Plane::POSITIVE)
+		{
+			Mf::Plane yz = aabb.getPlaneYZ();
+			halfspace = yz.intersects(sphere_);
+			if (halfspace == Mf::Plane::INTERSECT)
+			{
+				halfspace = yz.intersects(aabb_);
+			}
+
+			if (halfspace == Mf::Plane::POSITIVE)
+			{
+				octantNum = 6;
+			}
+			else if (halfspace == Mf::Plane::NEGATIVE)
+			{
+				octantNum = 7;
+			}
+		}
+		else if (halfspace == Mf::Plane::NEGATIVE)
+		{
+			Mf::Plane yz = aabb.getPlaneYZ();
+			halfspace = yz.intersects(sphere_);
+			if (halfspace == Mf::Plane::INTERSECT)
+			{
+				halfspace = yz.intersects(aabb_);
+			}
+
+			if (halfspace == Mf::Plane::POSITIVE)
+			{
+				octantNum = 5;
+			}
+			else if (halfspace == Mf::Plane::NEGATIVE)
+			{
+				octantNum = 4;
+			}
+		}
+	}
+
+	return octantNum;
+}
+
+
 /** vim: set ts=4 sw=4 tw=80: *************************************************/