#include <cmath>
#include <sstream>
#include <string>

#include "parse.h"
#include "person.h"
#include "weapon.h"

using namespace JFK;
using std::string;

person::person(const string& iname)
    : name(iname), health(100), curweapon(WATERGUN),
      blocked(false), score(0), deaths(0)
{
    r = 17.0;
    for (size_t i = 0; i < MAX_WEAPON; i++)
    {
        hasweapon[i] = i == WATERGUN ? true : false;
        ammo[i] = i == WATERGUN ? 500 : 0;
    }
}

string
person::tostring() const
{
    std::ostringstream  oss;
    unsigned            weapons = 0;

    for (size_t i = 0; i < MAX_WEAPON; i++)
        if (hasweapon[i])
            weapons |= 1U << i;

    oss << "x=" << x << " y=" << y << " dx=" << dx << " dy=" << dy 
        << " v=" << v << " w=" << w << " name=" << name 
        << " curweapon=" << curweapon << " weapons=" << weapons
        << " blocked=" << blocked
        << " health=" << health << " ammo=" << ammo[curweapon]
        << " score=" << score << " deaths=" << deaths;

    return oss.str();
}

void
person::fromstring(const string& s)
{
    int         index = 0;
    int         weapons = -1;
    string      arg = argument(0, s);
    
    while (arg.length() > 0)
    {
        string id = identifier(arg);
        if (id == "x") x = strtodbl(value(arg));
        else if (id == "y") y = strtodbl(value(arg));
        else if (id == "dx") dx = strtodbl(value(arg));
        else if (id == "dy") dy = strtodbl(value(arg));
        else if (id == "v") v = strtodbl(value(arg));
        else if (id == "w") w = strtodbl(value(arg));
        else if (id == "name") name = value(arg);
        else if (id == "curweapon") curweapon = strtoint(value(arg));
        else if (id == "weapons") weapons = strtoint(value(arg));
        else if (id == "blocked") blocked = strtoint(value(arg));
        else if (id == "health") health = strtoint(value(arg));
        else if (id == "ammo") ammo[0] = strtoint(value(arg));
        else if (id == "score") score = strtoint(value(arg));
        else if (id == "deaths") deaths = strtoint(value(arg));
        //else throw exception("wrong string"); better ignore...

        index++;
        arg = argument(index, s);
    }

    if (weapons != -1)
        for (size_t i = 0; i < MAX_WEAPON; i++)
        {
            if (weapons & (1 << i))
                hasweapon[i] = true;
            else
                hasweapon[i] = false;
        }
}

void
person::move(double t)
{
    if (!blocked)
    {
        x += v * dx * t;
        y += v * dy * t;
    }

    double  tmp = dx;

    dx = std::cos(w * t) * dx - std::sin(w * t) * dy;
    dy = std::cos(w * t) * dy + std::sin(w * t) * tmp;
}

string
person::classname() const
{
    return "person";
}