camera.cpp

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/* ResidualVM - A 3D game interpreter
 *
 * ResidualVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the AUTHORS
 * file distributed with this source distribution.
 *
 * 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.
 *
 */

#include "engines/stark/resources/camera.h"

#include "engines/stark/debug.h"
#include "engines/stark/formats/xrc.h"
#include "engines/stark/resources/location.h"
#include "engines/stark/scene.h"
#include "engines/stark/services/services.h"

namespace Stark {
namespace Resources {

Camera::~Camera() {
}

Camera::Camera(Object *parent, byte subType, uint16 index, const Common::String &name) :
        Object(parent, subType, index, name),
        _f1(0),
        _fov(45),
        _nearClipPlane(100.0),
        _farClipPlane(64000.0) {
    _type = TYPE;
}

void Camera::setClipPlanes(float near, float far) {
    _nearClipPlane = near;
    _farClipPlane = far;
}

void Camera::readData(Formats::XRCReadStream *stream) {
    _position = stream->readVector3();
    _lookDirection = stream->readVector3();
    _f1 = stream->readFloatLE();
    _fov = stream->readFloatLE();
    _viewSize = stream->readRect();
    _v4 = stream->readVector3();
}

void Camera::onAllLoaded() {
    Object::onAllLoaded();

    // Compute scroll coordinates bounds
    Common::Point maxScroll;
    maxScroll.x = _viewSize.width() - 640;
    maxScroll.y = _viewSize.height() - 365;

    Location *location = findParent<Location>();
    location->initScroll(maxScroll);
}

void Camera::onEnterLocation() {
    Object::onEnterLocation();

    // Setup the camera
    StarkScene->initCamera(_position, _lookDirection, _fov, _viewSize, _nearClipPlane, _farClipPlane);

    // Scroll the camera to its initial position
    Location *location = findParent<Location>();
    location->setScrollPosition(location->getScrollPosition());
}

Math::Angle Camera::getHorizontalAngle() const {
    Math::Angle lookDirectionAngle = Math::Vector3d::angle(_lookDirection, Math::Vector3d(1.0, 0.0, 0.0));
    Math::Vector3d cross = Math::Vector3d::crossProduct(_lookDirection, Math::Vector3d(1.0, 0.0, 0.0));
    if (cross.z() < 0) {
        return -lookDirectionAngle;
    } else {
        return lookDirectionAngle;
    }
}

void Camera::printData() {
    Common::Debug debug = streamDbg();
    debug << "position: " << _position << "\n";
    debug << "lookDirection: " << _lookDirection << "\n";
    debug << "f1: " << _f1 << "\n";
    debug << "fov: " << _fov << "\n";
    debug << "viewSize:" << _viewSize.left << _viewSize.top << _viewSize.right << _viewSize.bottom << "\n";
    debug << "v4: " << _v4 << "\n";
}

} // End of namespace Resources
} // End of namespace Stark