Moved Stars45 to StarsEx

1 files changed, 0 insertions, 774 deletions

diff --git a/Stars45/Physical.cpp b/Stars45/Physical.cpp
deleted file mode 100644
index 6c2e90e..0000000
--- a/Stars45/Physical.cpp
+++ /dev/null
@@ -1,774 +0,0 @@
-/*  Starshatter: The Open Source Project
-    Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors
-    Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
-    Copyright (c) 1997-2006, Destroyer Studios LLC.
-
-    AUTHOR:       John DiCamillo
-
-
-    OVERVIEW
-    ========
-    Abstract Physical Object
-*/
-
-#include "Physical.h"
-#include "Graphic.h"
-#include "Light.h"
-#include "Director.h"
-
-// +--------------------------------------------------------------------+
-
-int      Physical::id_key     = 1;
-double   Physical::sub_frame  = 1.0 / 60.0;
-
-static const double GRAV = 6.673e-11;
-
-// +--------------------------------------------------------------------+
-
-Physical::Physical()
-    : id(id_key++), obj_type(0), rep(0), light(0),
-      thrust(0.0f), drag(0.0f), lat_thrust(false),
-      trans_x(0.0f), trans_y(0.0f), trans_z(0.0f), straight(false),
-      roll(0.0f), pitch(0.0f), yaw(0.0f), dr(0.0f), dp(0.0f), dy(0.0f),
-      dr_acc(0.0f), dp_acc(0.0f), dy_acc(0.0f),
-      dr_drg(0.0f), dp_drg(0.0f), dy_drg(0.0f),
-      flight_path_yaw(0.0f), flight_path_pitch(0.0f), primary_mass(0),
-      roll_rate(1.0f), pitch_rate(1.0f), yaw_rate(1.0f), shake(0.0f),
-      radius(0.0f), mass(1.0f), integrity(1.0f), life(-1), dir(0),
-      g_accel(0.0f), Do(0.0f), CL(0.0f), CD(0.0f), alpha(0.0f), stall(0.0f)
-{
-    strcpy_s(name, "unknown object");
-}
-
-// +--------------------------------------------------------------------+
-
-Physical::Physical(const char* n, int t)
-    : id(id_key++), obj_type(t), rep(0), light(0),
-      thrust(0.0f), drag(0.0f), lat_thrust(false),
-      trans_x(0.0f), trans_y(0.0f), trans_z(0.0f), straight(false),
-      roll(0.0f), pitch(0.0f), yaw(0.0f), dr(0.0f), dp(0.0f), dy(0.0f),
-      dr_acc(0.0f), dp_acc(0.0f), dy_acc(0.0f),
-      dr_drg(0.0f), dp_drg(0.0f), dy_drg(0.0f),
-      flight_path_yaw(0.0f), flight_path_pitch(0.0f), primary_mass(0),
-      roll_rate(1.0f), pitch_rate(1.0f), yaw_rate(1.0f), shake(0.0f),
-      radius(0.0f), mass(1.0f), integrity(1.0f), life(-1), dir(0),
-      g_accel(0.0f), Do(0.0f), CL(0.0f), CD(0.0f), alpha(0.0f), stall(0.0f)
-{
-    strncpy_s(name, n, NAMELEN-1);
-    name[NAMELEN-1] = 0;
-}
-
-// +--------------------------------------------------------------------+
-
-Physical::~Physical()
-{
-    // inform graphic rep and light that we are leaving:
-    GRAPHIC_DESTROY(rep);
-    LIGHT_DESTROY(light);
-
-    // we own the director
-    delete dir;
-    dir = 0;
-}
-
-// +--------------------------------------------------------------------+
-#undef random
-inline double random() { return rand()-16384; }
-
-void
-Physical::ExecFrame(double s)
-{
-    Point orig_velocity = Velocity();
-    arcade_velocity = Point();
-
-    // if this object is under direction,
-    // but doesn't need subframe accuracy,
-    // update the control parameters:
-    if (dir && !dir->Subframe())
-        dir->ExecFrame(s);
-
-    // decrement life before destroying the frame time:
-    if (life > 0)
-        life -= s;
-
-    // integrate equations
-    // using slices no larger
-    // than sub_frame:
-
-    double seconds = s;
-
-    while (s > 0.0) {
-        if (s > sub_frame)
-        seconds = sub_frame;
-        else
-        seconds = s;
-
-        // if the director needs subframe accuracy, run it now:
-        if (dir && dir->Subframe())
-        dir->ExecFrame(seconds);
-
-        if (!straight)
-        AngularFrame(seconds);
-
-        // LINEAR MOVEMENT ----------------------------
-        Point pos = cam.Pos();
-
-        // if the object is thrusting,
-        // accelerate along the camera normal:
-        if (thrust) {
-            Point thrustvec = cam.vpn();
-            thrustvec *= ((thrust/mass) * seconds);
-            velocity += thrustvec;
-        }
-
-        LinearFrame(seconds);
-
-        // move the position by the (time-frame scaled) velocity:
-        pos += velocity * seconds;
-        cam.MoveTo(pos);
-
-        s -= seconds;
-    }
-
-    alpha = 0.0f;
-
-    // now update the graphic rep and light sources:
-    if (rep) {
-        rep->MoveTo(cam.Pos());
-        rep->SetOrientation(cam.Orientation());
-    }
-
-    if (light) {
-        light->MoveTo(cam.Pos());
-    }
-
-    if (!straight)
-        CalcFlightPath();
-
-    accel = (Velocity() - orig_velocity) * (1/seconds);
-    if (!_finite(accel.x) || !_finite(accel.y) || !_finite(accel.z))
-        accel = Point();
-}
-
-// +--------------------------------------------------------------------+
-
-void
-Physical::AeroFrame(double s)
-{
-    arcade_velocity = Point();
-
-    // if this object is under direction,
-    // but doesn't need subframe accuracy,
-    // update the control parameters:
-    if (dir && !dir->Subframe())
-        dir->ExecFrame(s);
-
-    // decrement life before destroying the frame time:
-    if (life > 0)
-        life -= s;
-
-    // integrate equations
-    // using slices no larger
-    // than sub_frame:
-
-    double seconds = s;
-
-    while (s > 0.0) {
-        if (s > sub_frame)
-        seconds = sub_frame;
-        else
-        seconds = s;
-
-        // if the director needs subframe accuracy, run it now:
-        if (dir && dir->Subframe())
-        dir->ExecFrame(seconds);
-
-        AngularFrame(seconds);
-
-        // LINEAR MOVEMENT ----------------------------
-        Point pos = cam.Pos();
-
-        // if the object is thrusting,
-        // accelerate along the camera normal:
-        if (thrust) {
-            Point thrustvec = cam.vpn();
-            thrustvec *= ((thrust/mass) * seconds);
-            velocity += thrustvec;
-        }
-
-        // AERODYNAMICS ------------------------------
-
-        if (lat_thrust)
-            LinearFrame(seconds);
-
-        // if no thrusters, do constant gravity:
-        else if (g_accel > 0)
-            velocity += Point(0, -g_accel, 0) * seconds;
-
-        // compute alpha, rho, drag, and lift:
-
-        Point  vfp     = velocity;
-        double v       = vfp.Normalize();
-        double v_2     = 0;
-        double rho     = GetDensity();
-        double lift    = 0;
-
-        if (v > 150) {
-            v_2 = (v-150) * (v-150);
-
-            Point  vfp1 = vfp - cam.vrt() * (vfp * cam.vrt());
-            vfp1.Normalize();
-
-            double cos_alpha = vfp1 * cam.vpn();
-
-            if (cos_alpha >= 1) {
-                alpha = 0.0f;
-            }
-            else {
-                alpha = (float) acos(cos_alpha);
-            }
-
-            // if flight path is above nose, alpha is negative:
-            if (vfp1 * cam.vup() > 0)
-            alpha = -alpha;
-
-            if (alpha <= stall) {
-                lift = CL * alpha * rho * v_2;
-            }
-            else {
-                lift = CL * (2*stall - alpha) * rho * v_2;
-            }
-
-            // add lift to velocity:
-            if (_finite(lift))
-            velocity += cam.vup() * lift * seconds;
-            else
-            lift = 0;
-
-            // if drag applies, decellerate:
-            double alpha_2 = alpha*alpha;
-            double drag_eff = (drag + (CD * alpha_2)) * rho * v_2;
-
-            Point vn = velocity;
-            vn.Normalize();
-
-            velocity += vn * -drag_eff * seconds;
-        }
-        else {
-            velocity *= exp(-drag * seconds);
-        }
-
-        // move the position by the (time-frame scaled) velocity:
-        pos += velocity * seconds;
-        cam.MoveTo(pos);
-
-        s -= seconds;
-    }
-
-    // now update the graphic rep and light sources:
-    if (rep) {
-        rep->MoveTo(cam.Pos());
-        rep->SetOrientation(cam.Orientation());
-    }
-
-    if (light) {
-        light->MoveTo(cam.Pos());
-    }
-}
-
-double
-Physical::GetDensity() const
-{
-    double alt = cam.Pos().y;
-    double rho = 0.75 * Do * (250e3-alt)/250e3;
-
-    return rho;
-}
-
-// +--------------------------------------------------------------------+
-
-void
-Physical::ArcadeFrame(double s)
-{
-    // if this object is under direction,
-    // but doesn't need subframe accuracy,
-    // update the control parameters:
-    if (dir && !dir->Subframe())
-        dir->ExecFrame(s);
-
-    // decrement life before destroying the frame time:
-    if (life > 0)
-        life -= s;
-
-    // integrate equations
-    // using slices no larger
-    // than sub_frame:
-
-    double seconds = s;
-
-    while (s > 0.0) {
-        if (s > sub_frame)
-        seconds = sub_frame;
-        else
-        seconds = s;
-
-        // if the director needs subframe accuracy, run it now:
-        if (dir && dir->Subframe())
-            dir->ExecFrame(seconds);
-
-        if (!straight)
-            AngularFrame(seconds);
-
-        Point pos = cam.Pos();
-
-        // ARCADE FLIGHT MODEL:
-        // arcade_velocity vector is always in line with heading
-
-        double speed = arcade_velocity.Normalize();
-        double bleed = arcade_velocity * cam.vpn();
-
-        speed *= pow(bleed, 30);
-        arcade_velocity = cam.vpn() * speed;
-
-        if (thrust) {
-            Point thrustvec = cam.vpn();
-            thrustvec *= ((thrust/mass) * seconds);
-            arcade_velocity += thrustvec;
-        }
-
-        if (drag)
-            arcade_velocity *= exp(-drag * seconds);
-
-        LinearFrame(seconds);
-
-        // move the position by the (time-frame scaled) velocity:
-        pos += arcade_velocity * seconds +
-        velocity        * seconds;
-
-        cam.MoveTo(pos);
-
-        s -= seconds;
-    }
-
-    alpha = 0.0f;
-
-    // now update the graphic rep and light sources:
-    if (rep) {
-        rep->MoveTo(cam.Pos());
-        rep->SetOrientation(cam.Orientation());
-    }
-
-    if (light) {
-        light->MoveTo(cam.Pos());
-    }
-}
-
-// +--------------------------------------------------------------------+
-
-void
-Physical::AngularFrame(double seconds)
-{
-    if (!straight) {
-        dr += (float) (dr_acc * seconds);
-        dy += (float) (dy_acc * seconds);
-        dp += (float) (dp_acc * seconds);
-
-        dr *= (float) exp(-dr_drg * seconds);
-        dy *= (float) exp(-dy_drg * seconds);
-        dp *= (float) exp(-dp_drg * seconds);
-
-        roll  = (float) (dr * seconds);
-        pitch = (float) (dp * seconds);
-        yaw   = (float) (dy * seconds);
-
-        if (shake > 0.01) {
-            vibration = Point(random(), random(), random());
-            vibration.Normalize();
-            vibration *= (float) (shake * seconds);
-
-            shake *= (float) exp(-1.5 * seconds);
-        }
-        else {
-            vibration.x = vibration.y = vibration.z = 0.0f;
-            shake = 0.0f;
-        }
-
-        cam.Aim(roll, pitch, yaw);
-    }
-}
-
-// +--------------------------------------------------------------------+
-
-void
-Physical::LinearFrame(double seconds)
-{
-    // deal with lateral thrusters:
-
-    if (trans_x) { // side-to-side
-        Point transvec = cam.vrt();
-        transvec *= ((trans_x/mass) * seconds);
-
-        velocity += transvec;
-    }
-
-    if (trans_y) { // fore-and-aft
-        Point transvec = cam.vpn();
-        transvec *= ((trans_y/mass) * seconds);
-
-        velocity += transvec;
-    }
-
-    if (trans_z) { // up-and-down
-        Point transvec = cam.vup();
-        transvec *= ((trans_z/mass) * seconds);
-
-        velocity += transvec;
-    }
-
-    // if gravity applies, attract:
-    if (primary_mass > 0) {
-        Point  g = primary_loc - cam.Pos();
-        double r = g.Normalize();
-
-        g *= GRAV * primary_mass / (r*r);
-
-        velocity += g * seconds;
-    }
-
-    // constant gravity:
-    else if (g_accel > 0) {
-        velocity += Point(0, -g_accel, 0) * seconds;
-    }
-
-    // if drag applies, decellerate:
-    if (drag)
-        velocity *= exp(-drag * seconds);
-}
-
-// +--------------------------------------------------------------------+
-
-void
-Physical::CalcFlightPath()
-{
-    flight_path_yaw   = 0.0f;
-    flight_path_pitch = 0.0f;
-
-    // transform flight path into camera frame:
-    Point flight_path = velocity;
-    if (flight_path.Normalize() < 1)
-    return;
-
-    Point tmp = flight_path;
-    flight_path.x = tmp * cam.vrt();
-    flight_path.y = tmp * cam.vup();
-    flight_path.z = tmp * cam.vpn();
-
-    if (flight_path.z < 0.1)
-        return;
-
-    // first, compute azimuth:
-    flight_path_yaw = (float) atan(flight_path.x / flight_path.z);
-    if (flight_path.z < 0)     flight_path_yaw -= (float) PI;
-    if (flight_path_yaw < -PI) flight_path_yaw += (float) (2*PI);
-
-    // then, rotate path into azimuth frame to compute elevation:
-    Camera yaw_cam;
-    yaw_cam.Clone(cam);
-    yaw_cam.Yaw(flight_path_yaw);
-
-    flight_path.x = tmp * yaw_cam.vrt();
-    flight_path.y = tmp * yaw_cam.vup();
-    flight_path.z = tmp * yaw_cam.vpn();
-
-    flight_path_pitch = (float) atan(flight_path.y / flight_path.z);
-}
-
-// +--------------------------------------------------------------------+
-
-void
-Physical::MoveTo(const Point& new_loc)
-{
-    cam.MoveTo(new_loc);
-}
-
-void
-Physical::TranslateBy(const Point& ref)
-{
-    Point new_loc = cam.Pos() - ref;
-    cam.MoveTo(new_loc);
-}
-
-void
-Physical::ApplyForce(const Point& force)
-{
-    velocity += force/mass;
-}
-
-void
-Physical::ApplyTorque(const Point& torque)
-{
-    dr += (float) (torque.x/mass);
-    dp += (float) (torque.y/mass);
-    dy += (float) (torque.z/mass);
-}
-
-void
-Physical::SetThrust(double t)
-{
-    thrust = (float) t;
-}
-
-void
-Physical::SetTransX(double t)
-{
-    trans_x = (float) t;
-}
-
-void
-Physical::SetTransY(double t)
-{
-    trans_y = (float) t;
-}
-
-void
-Physical::SetTransZ(double t)
-{
-    trans_z = (float) t;
-}
-
-// +--------------------------------------------------------------------+
-
-void
-Physical::SetHeading(double r, double p, double y)
-{
-    roll  = (float) r;
-    pitch = (float) p;
-    yaw   = (float) y;
-
-    cam.Aim(roll, pitch, yaw);
-}
-
-void
-Physical::LookAt(const Point& dst)
-{
-    cam.LookAt(dst);
-}
-
-void
-Physical::CloneCam(const Camera& c)
-{
-    cam.Clone(c);
-}
-
-void
-Physical::SetAbsoluteOrientation(double r, double p, double y)
-{
-    roll  = (float) r;
-    pitch = (float) p;
-    yaw   = (float) y;
-
-    Camera work(Location().x, Location().y, Location().z);
-    work.Aim(r,p,y);
-    cam.Clone(work);
-}
-
-void
-Physical::ApplyRoll(double r)
-{
-    if (r > 1)       r =  1;
-    else if (r < -1) r = -1;
-
-    dr_acc = (float) r * roll_rate;
-}
-
-void
-Physical::ApplyPitch(double p)
-{
-    if (p > 1)       p =  1;
-    else if (p < -1) p = -1;
-
-    dp_acc = (float) p * pitch_rate;
-}
-
-void
-Physical::ApplyYaw(double y)
-{
-    if (y > 1)       y =  1;
-    else if (y < -1) y = -1;
-
-    dy_acc = (float) y * yaw_rate;
-}
-
-void
-Physical::SetAngularRates(double  r, double  p, double  y)
-{
-    roll_rate  = (float) r;
-    pitch_rate = (float) p;
-    yaw_rate   = (float) y;
-}
-
-void
-Physical::GetAngularRates(double& r, double& p, double& y)
-{
-    r = roll_rate;
-    p = pitch_rate;
-    y = yaw_rate;
-}
-
-void
-Physical::SetAngularDrag(double  r, double  p, double  y)
-{
-    dr_drg = (float) r;
-    dp_drg = (float) p;
-    dy_drg = (float) y;
-}
-
-void
-Physical::GetAngularDrag(double& r, double& p, double& y)
-{
-    r = dr_drg;
-    p = dp_drg;
-    y = dy_drg;
-}
-
-void
-Physical::GetAngularThrust(double& r, double& p, double& y)
-{
-    r = 0;
-    p = 0;
-    y = 0;
-
-    if      (dr_acc > 0.05 * roll_rate)    r =  1;
-    else if (dr_acc < -0.05 * roll_rate)   r = -1;
-    else if (dr > 0.01 * roll_rate)        r = -1;
-    else if (dr < -0.01 * roll_rate)       r =  1;
-
-    if      (dy_acc > 0.05 * yaw_rate)     y =  1;
-    else if (dy_acc < -0.05 * yaw_rate)    y = -1;
-    else if (dy > 0.01 * yaw_rate)         y = -1;
-    else if (dy < -0.01 * yaw_rate)        y =  1;
-
-    if      (dp_acc > 0.05 * pitch_rate)   p =  1;
-    else if (dp_acc < -0.05 * pitch_rate)  p = -1;
-    else if (dp > 0.01 * pitch_rate)       p = -1;
-    else if (dp < -0.01 * pitch_rate)      p =  1;
-}
-
-
-void
-Physical::SetPrimary(const Point& l, double m)
-{
-    primary_loc  = l;
-    primary_mass = m;
-}
-
-void
-Physical::SetGravity(double g)
-{
-    if (g >= 0)
-    g_accel = (float) g;
-}
-
-void
-Physical::SetBaseDensity(double d)
-{
-    if (d >= 0)
-    Do = (float) d;
-}
-
-// +--------------------------------------------------------------------+
-
-void
-Physical::InflictDamage(double damage, int /*type*/)
-{
-    integrity -= (float) damage;
-
-    if (integrity < 1.0f)
-    integrity = 0.0f;
-}
-
-// +--------------------------------------------------------------------+
-
-int
-Physical::CollidesWith(Physical& o)
-{
-    // representation collision test (will do bounding spheres first):
-    if (rep && o.rep)
-    return rep->CollidesWith(*o.rep);
-
-    Point delta_loc = Location() - o.Location();
-
-    // bounding spheres test:
-    if (delta_loc.length() > radius + o.radius)
-    return 0;
-
-    // assume collision:
-    return 1;
-}
-
-
-// +--------------------------------------------------------------------+
-
-void
-Physical::ElasticCollision(Physical& a, Physical& b)
-{
-    double mass_sum   = a.mass + b.mass;
-    double mass_delta = a.mass - b.mass;
-
-    Point vel_a = (Point(b.velocity) * (2 * b.mass) + Point(a.velocity) * mass_delta) * (1/mass_sum);
-    Point vel_b = (Point(a.velocity) * (2 * a.mass) - Point(b.velocity) * mass_delta) * (1/mass_sum);
-
-    a.velocity = vel_a;
-    b.velocity = vel_b;
-}
-
-// +--------------------------------------------------------------------+
-
-void
-Physical::InelasticCollision(Physical& a, Physical& b)
-{
-    double mass_sum   = a.mass + b.mass;
-
-    Point vel_a = (Point(a.velocity) * a.mass + Point(b.velocity) * b.mass) * (1/mass_sum);
-
-    a.velocity = vel_a;
-    b.velocity = vel_a;
-}
-
-// +--------------------------------------------------------------------+
-
-void
-Physical::SemiElasticCollision(Physical& a, Physical& b)
-{
-    double mass_sum   = a.mass + b.mass;
-    double mass_delta = a.mass - b.mass;
-
-    Point avel  = a.Velocity();
-    Point bvel  = b.Velocity();
-    Point dv    = avel - bvel;
-
-    // low delta-v: stick
-    if (dv.length() < 20) {
-        if (a.mass > b.mass) {
-            b.velocity = a.velocity;
-        }
-
-        else {
-            a.velocity = b.velocity;
-        }
-    }
-
-    // high delta-v: bounce
-    else {
-        Point Ve_a  = (bvel * (2 * b.mass) + avel * mass_delta) * (1/mass_sum) * 0.65;
-        Point Ve_b  = (avel * (2 * a.mass) - bvel * mass_delta) * (1/mass_sum) * 0.65;
-        Point Vi_ab = (avel * a.mass + bvel * b.mass)           * (1/mass_sum) * 0.35;
-
-        a.arcade_velocity = Point();
-        b.arcade_velocity = Point();
-
-        a.velocity = Ve_a + Vi_ab;
-        b.velocity = Ve_b + Vi_ab;
-    }
-}
-