*******************************************************************************/
+#include <iostream>
+
#include "Character.hh"
+#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 ResistanceForce
+{
+ explicit ResistanceForce(Mf::Scalar scale = 1.0) :
+ k(scale) {}
+
+ const Mf::Vector2& operator () (const Mf::LinearState<2>& state)
+ {
+ force = -k * state.velocity;
+ return force;
+ }
+
+private:
+
+ Mf::Vector2 force;
+ Mf::Scalar k;
+};
+
+
Character::Character(const std::string& name) :
- texture(name),
- anim(name) {}
+ tilemap(name),
+ animation(name)
+{
+ current.init();
+
+ current.mass = 1.0;
+ current.inverseMass = 1.0 / current.mass;
+
+ // forces
+ current.force = Mf::Vector2(0.0, 0.0);
+ current.forces.push_back(SpringForce(Mf::Vector2(500.0, 200.0)));
+ 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);
+ current.momentum = Mf::Vector2(0.0, 0.0);
+ current.recalculate();
+
+ previous = current;
+}
-Character::~Character()
+
+void Character::update(Mf::Scalar t, Mf::Scalar dt)
{
- //delete texture;
- //delete anim;
+ previous = current;
+
+ //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::euler<State,Derivative>(current, t, dt);
+
+ 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);
}
-void Character::draw(dc::scalar alpha) {}
+void Character::draw(Mf::Scalar alpha) const
+{
+ Mf::Vector2 position = cml::lerp(previous.position, current.position, alpha);
+
+ //glColor3f(1.0f, 1.0f, 1.0f);
+ tilemap.bind();
+
+ Tilemap::Index frame = animation.getFrame();
+
+ Tilemap::Orientation orientation = Tilemap::NORMAL;
+
+ if (current.velocity[0] < 0.0) orientation = Tilemap::REVERSE;
+
+ Mf::Scalar coords[8];
+ tilemap.getTileCoords(frame, coords, orientation);
+
+ Mf::Scalar s = 16.0;
+
+ glBegin(GL_TRIANGLE_FAN);
+ glTexCoord2f(coords[0], coords[1]);
+ glVertex3(position[0]-s, position[1]-s, z);
+ glTexCoord2f(coords[2], coords[3]);
+ glVertex3(position[0]+s, position[1]-s, z);
+ glTexCoord2f(coords[4], coords[5]);
+ glVertex3(position[0]+s, position[1]+s, z);
+ glTexCoord2f(coords[6], coords[7]);
+ glVertex3(position[0]-s, position[1]+s, z);
+ glEnd();
+
+ //glColor3f(0.0f, 0.0f, 0.0f);
+ Mf::Texture::resetBind();
+
+ glBegin(GL_TRIANGLES);
+ glVertex3(480.0, 190.0, 64.0);
+ glVertex3(520.0, 190.0, 64.0);
+ glVertex3(500.0, 210.0, 64.0);
+ glEnd();
+
+ //glColor3f(1.0f, 1.0f, 1.0f);
+}
-dc::tilemap& Character::getTilemap()
+
+bool Character::isInsideAabb(const Mf::Aabb& aabb) const
{
- return texture;
+ // 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;
}
-dc::animation& Character::getAnimation()
+int Character::getOctant(const Mf::Aabb& aabb) const
{
- return anim;
+ 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;
}