// File: Genesis.cxx
// This program simulates a falling object with a rocket.
#include <iostream>
using namespace std;

const double LATERAL_PROP = 0.1;                              // Proportion
const double GRAVITY = -9.8;                                  // m/s^2
const double LANDER_WEIGHT = 1000;                            // kg 
const double MAX_FUEL = 0.25*LANDER_WEIGHT;                   // kg
const double THRUST_Y = -2*GRAVITY*(LANDER_WEIGHT + MAX_FUEL);// kg m/s^2
const double THRUST_X = THRUST_Y * LATERAL_PROP;              // kg m/s^2
const double INITIAL_MAX_X = 500;                             // m
const double INITIAL_Y = 1000;                                // m     
const double INITIAL_SPEED_X = 0;                             // m/s
const double INITIAL_SPEED_Y = 0;                             // m/s
const double BURN_RATE_Y = MAX_FUEL / 30;                     // kg/s
const double BURN_RATE_X = BURN_RATE_Y * LATERAL_PROP;        // kg/s
const double MAX_LANDING_SPEED = 9.0;                         // m/s

// The display function shows the current state of the lander.
void display(
    double time,                                       // Simulation time
    double x, double y,                                // Position
    double vx, double vy,                              // Velocity
    double fuel,                                       // Remaining fuel
    bool main_thruster,                                // Thrusters on?
    bool left_thruster,
    bool right_thruster 
    );

int main( )
{

}

void display(
    double time,                                       // Simulation time
    double x, double y,                                // Position
    double vx, double vy,                              // Velocity
    double fuel,                                       // Remaining fuel
    bool main_thruster,                                // Thrusters on?
    bool left_thruster,
    bool right_thruster 
    )
{
    cout << "Lander information: \n"
	 << "Time: " << time << "s\n"
	 << "Position (x: " << x << "m, y: " << y << "m)\n"
	 << "Velocity (x: " << vx << "m/s, y: " << vy << "m/s)\n"
	 << "Remaining fuel: " << fuel << "kg\n"
	 << "Thrusters: ("
	 << "main:" << main_thruster
	 << ", left:" << left_thruster
	 << ", right:" << right_thruster << ")\n"
	 << endl;
}