X-Git-Url: https://git.dogcows.com/gitweb?p=chaz%2Fyoink;a=blobdiff_plain;f=src%2FCharacter.cc;h=ffecfd5b8c5db2c2c82c3e4cc478c00d718f3fed;hp=8e5a4c65e7437ca4f80a8614a8b17c5f1c087454;hb=fcb40aa40c6a13ca0e0962b35973ac4574779574;hpb=a4debfe4a5f5d339410788971b698ba00cb7f09c

diff --git a/src/Character.cc b/src/Character.cc
index 8e5a4c6..ffecfd5 100644
--- a/src/Character.cc
+++ b/src/Character.cc
@@ -32,15 +32,58 @@
 #include "Log.hh"
 
 	
+struct SpringForce
+{
+	explicit SpringForce(Mf::Vector2 x) :
+		location(x) {}
+
+	const Mf::Vector2& operator () (const Mf::LinearState<2>& state)
+	{
+		Mf::Vector2 x = state.position - location;
+		Mf::Scalar mag = x.length();
+		Mf::Scalar d = 50.0;
+
+		// spring:
+		//current.force += -15.0 * x - 1.5 * current.velocity;
+		force = -20.0 * (mag - d) * (x / mag) - 2.0 * state.velocity;
+
+		return force;
+	}
+
+private:
+
+	Mf::Vector2 force;
+	Mf::Vector2 location;
+};
+
+struct WindResistenceForce
+{
+	const Mf::Vector2& operator () (const Mf::LinearState<2>& state)
+	{
+		force = -2.0 * state.velocity;
+		return force;
+	}
+
+private:
+
+	Mf::Vector2 force;
+};
+
+
 Character::Character(const std::string& name) :
 	tilemap_(name),
 	animation_(name)
 {
+	current.init();
+
 	current.mass = 1.0;
 	current.inverseMass = 1.0 / current.mass;
 
 	// gravity
-	current.force = Mf::Vector2(0.0, -120.0);
+	current.force = Mf::Vector2(0.0, 000.0);
+	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));
 
 	// starting position
 	current.position = Mf::Vector2(64.0, 64.0);
@@ -48,8 +91,6 @@ Character::Character(const std::string& name) :
 	current.recalculate();
 
 	previous = current;
-
-	//updateContainers();
 }
 
 
@@ -57,36 +98,33 @@ void Character::update(Mf::Scalar t, Mf::Scalar dt)
 {
 	previous = current;
 
-	Mf::Vector2 x = current.position - Mf::Vector2(500.0, 200.0);
-	Mf::Scalar mag = x.length();
-	Mf::Scalar d = 50.0;
-
-	current.force = Mf::Vector2(0.0, -2000.0);
-	//current.force += -15.0 * x - 1.5 * current.velocity;
-	current.force += -20.0 * (mag - d) * (x / mag) - 2.0 * current.velocity;
-	current.force += userForce;
-	current.recalculate();
+	//Mf::Vector2 x = current.position - Mf::Vector2(500.0, 200.0);
+	//Mf::Scalar mag = x.length();
+	//Mf::Scalar d = 50.0;
+
+	//// gravity:
+	//current.force = Mf::Vector2(0.0, -2000.0);
+	//// spring:
+	////current.force += -15.0 * x - 1.5 * current.velocity;
+	//current.force += -20.0 * (mag - d) * (x / mag) - 2.0 * current.velocity;
+	//// internal:
+	//current.force += userForce;
+	//current.recalculate();
 	//std::cout << "force: " << current.momentum << std::endl;
 
-	Mf::integrate<State,Derivative>(current, t, dt);
+	//Mf::euler<State,Derivative>(current, t, dt);
 
-	animation_.update(t, dt);
+	//current.force = Mf::Vector2(0.0, -2000.0);
+	current.force = userForce;
+	current.integrate(t, dt);
 
-	//updateContainers();
+	animation_.update(t, dt);
 }
 
-//void Character::updateContainers()
-//{
-	//aabb_.init(Mf::Vector3(current.position[0]-16.0, current.position[1]-16.0, z),
-			//Mf::Vector3(current.position[0]+16.0, current.position[1]+16.0, z));
-	//sphere_.point = Mf::Vector3(current.position[0], current.position[1], z);
-	//sphere_.radius = (aabb_.min - sphere_.point).length();
-//}
-
 
 void Character::draw(Mf::Scalar alpha) const
 {
-	State state = cml::lerp(previous, current, alpha);
+	Mf::Vector2 position = cml::lerp(previous.position, current.position, alpha);
 
 	//glColor3f(1.0f, 1.0f, 1.0f);
 	tilemap_.bind();
@@ -104,13 +142,13 @@ void Character::draw(Mf::Scalar alpha) const
 
 	glBegin(GL_TRIANGLE_FAN);
 		glTexCoord2f(coords[0], coords[1]);
-		glVertex3(state.position[0]-s, state.position[1]-s, z);
+		glVertex3(position[0]-s, position[1]-s, z);
 		glTexCoord2f(coords[2], coords[3]);
-		glVertex3(state.position[0]+s, state.position[1]-s, z);
+		glVertex3(position[0]+s, position[1]-s, z);
 		glTexCoord2f(coords[4], coords[5]);
-		glVertex3(state.position[0]+s, state.position[1]+s, z);
+		glVertex3(position[0]+s, position[1]+s, z);
 		glTexCoord2f(coords[6], coords[7]);
-		glVertex3(state.position[0]-s, state.position[1]+s, z);
+		glVertex3(position[0]-s, position[1]+s, z);
 	glEnd();
 
 	//glColor3f(0.0f, 0.0f, 0.0f);