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// Cyphesis Online RPG Server and AI Engine
// Copyright (C) 2000,2001 Alistair Riddoch
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software Foundation,
// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
// $Id: Pedestrian.cpp,v 1.83 2007-09-22 15:46:14 alriddoch Exp $
#include "Pedestrian.h"
#include "Entity.h"
#include "common/const.h"
#include "common/debug.h"
#include "common/log.h"
#include "common/compose.hpp"
#include "common/Tick.h"
#include <wfmath/atlasconv.h>
#include <Atlas/Objects/Operation.h>
#include <Atlas/Objects/Anonymous.h>
using Atlas::Message::Element;
using Atlas::Objects::Operation::Move;
using Atlas::Objects::Entity::Anonymous;
static const bool debug_flag = false;
/// \brief Constructor
///
/// @param body the Entity this Movement is tracking.
Pedestrian::Pedestrian(Entity & body) : Movement(body)
{
}
Pedestrian::~Pedestrian()
{
}
double Pedestrian::getTickAddition(const Point3D & coordinates,
const Vector3D & velocity) const
{
// This may seem a little weird. Everything is handled in squares to
// reduce the number of square roots that have to be calculated. In
// this case only one is required.
if (m_targetPos.isValid()) {
double basic_square_distance = velocity.sqrMag()
* consts::square_basic_tick;
double square_distance = squareDistance(coordinates, m_targetPos);
debug( std::cout << "basic_distance: " << basic_square_distance
<< std::endl << std::flush;);
debug( std::cout << "distance: " << square_distance << std::endl
<< std::flush;);
if (basic_square_distance > square_distance) {
debug( std::cout << "\tshortened tick" << std::endl << std::flush;);
return sqrt(square_distance / basic_square_distance)
* consts::basic_tick;
}
}
return consts::basic_tick;
}
/// \brief Calculate the updated position of the entity since the last
/// move operation.
///
/// The does not modify the entity, but determines a new Location based
/// on the velocity of the entity, time elapsed, whether any collision
/// occurs, and whether the entity has reached its target.
/// @return 1 if no update was made, or 0 otherwise
int Pedestrian::getUpdatedLocation(Location & return_location)
{
const double & current_time = BaseWorld::instance().getTime();
double time_diff = current_time - m_body.m_location.timeStamp();
if (!updateNeeded(m_body.m_location)) {
debug( std::cout << "No update" << std::endl << std::flush;);
return 1;
}
Location new_location(m_body.m_location);
// Update location
Point3D new_coords = m_body.m_location.pos();
new_coords += (m_body.m_location.velocity() * time_diff);
if (m_targetPos.isValid()) {
Point3D new_coords2 = new_coords;
new_coords2 += (m_body.m_location.velocity() * (consts::basic_tick / 10.0));
// The values returned by squareDistance are squares, so
// cannot be used except for comparison
double dist = squareDistance(m_targetPos, new_coords);
double dist2 = squareDistance(m_targetPos, new_coords2);
debug( std::cout << "dist: " << dist << "," << dist2 << std::endl
<< std::flush;);
if (dist2 > dist) {
// If dist2 is larger than dist, then further movement
// is away from m_targetPos, so we know we have arrived.
debug( std::cout << "m_targetPos achieved";);
new_location.m_pos = m_targetPos;
// We have arrived at our target position and must
// stop, or be deflected
// Arrived at intended destination
reset();
new_location.m_velocity = Vector3D(0,0,0);
} else {
new_location.m_pos = new_coords;
}
} else {
new_location.m_pos = new_coords;
}
std::string mode("standing");
if (m_body.hasAttr("mode")) {
Element mode_attr;
m_body.getAttr("mode", mode_attr);
if (mode_attr.isString()) {
mode = mode_attr.String();
} else {
log(ERROR, String::compose("MODE on entity is a \"%1\" "
"in Pedestrain::getUpdatedLocation.",
Element::typeName(mode_attr.getType())));
}
}
float z = BaseWorld::instance().constrainHeight(new_location.m_loc, new_location.m_pos,
mode);
debug(std::cout << "Height adjustment " << z << " " << new_location.m_pos.z()
<< std::endl << std::flush;);
new_location.m_pos.z() = z;
return_location = new_location;
return 0;
}
Operation Pedestrian::generateMove(const Location & new_location)
{
// Create move operation
Move moveOp;
moveOp->setTo(m_body.getId());
// Set up argument for operation
Anonymous move_arg;
move_arg->setId(m_body.getId());
// Walk out what the mode of the character should be.
// Performed in squares to save on that critical sqrt() call
double vel_square_mag = 0;
if (new_location.velocity().isValid()) {
vel_square_mag = new_location.velocity().sqrMag();
}
double square_speed_ratio = vel_square_mag / consts::square_base_velocity;
float height = 0;
if (m_body.m_location.bBox().isValid()) {
height = m_body.m_location.bBox().highCorner().z() -
m_body.m_location.bBox().lowCorner().z();
}
if (new_location.pos().z() < (0 - height * 0.75)) {
move_arg->setAttr("mode", "swimming");
} else {
if (square_speed_ratio > 0.25) { // 0.5 ^ 2
move_arg->setAttr("mode", "running");
} else if (square_speed_ratio > 0.0025) { // 0.05 ^ 2
move_arg->setAttr("mode", "walking");
} else {
move_arg->setAttr("mode", "standing");
}
}
debug(std::cout << move_arg->getAttr("mode").asString() << std::endl << std::flush;);
new_location.addToEntity(move_arg);
moveOp->setArgs1(move_arg);
return moveOp;
}
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