minimap.cpp

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/* xoreos - A reimplementation of BioWare's Aurora engine
 *
 * xoreos is the legal property of its developers, whose names
 * can be found in the AUTHORS file distributed with this source
 * distribution.
 *
 * xoreos 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 3
 * of the License, or (at your option) any later version.
 *
 * xoreos 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 xoreos. If not, see <http://www.gnu.org/licenses/>.
 */

#include "glm/mat4x4.hpp"
#include "glm/gtc/type_ptr.hpp"
#include "glm/gtc/matrix_transform.hpp"

#include "src/common/util.h"

#include "src/engines/kotor/gui/ingame/minimap.h"

namespace Engines {

namespace KotOR {

Minimap::Minimap(const Common::UString &map, int northAxis,
                 float mapPt1X, float mapPt1Y, float mapPt2X, float mapPt2Y,
                 float worldPt1X, float worldPt1Y, float worldPt2X, float worldPt2Y) :
        _mapQuad("lbl_map" + map, 0, 0, 512, 256), _northAxis(northAxis),
        _mapPt1X(mapPt1X), _mapPt1Y(mapPt1Y), _mapPt2X(mapPt2X), _mapPt2Y(mapPt2Y),
        _worldPt1X(worldPt1X), _worldPt1Y(worldPt1Y), _worldPt2X(worldPt2X), _worldPt2Y(worldPt2Y) {

    add(&_mapQuad);

    glm::mat4 projection(glm::ortho(0.0f, 120.0f, 0.0f, 120.0f, -1.0f, 1.0f));

    setProjectionMatrix(projection);
}

void Minimap::setPosition(float x, float y) {
    glm::mat4 transformation;

    float scaleX, scaleY, relX, relY;
    switch (_northAxis) {
        case 0:
            scaleY = (_mapPt1Y - _mapPt2Y) / (_worldPt1Y - _worldPt2Y);
            scaleX = (_mapPt1X - _mapPt2X) / (_worldPt1X - _worldPt2X);
            relX = (x - _worldPt1X) * scaleX + _mapPt1X;
            relY = (y - _worldPt1Y) * scaleY + _mapPt1Y;
            transformation = glm::translate(transformation, glm::vec3(-(relX * 435) + 60, -(256 - relY * 256) + 60, 0));
            break;

        case 3:
            scaleX = (_mapPt1Y - _mapPt2Y) / (_worldPt1X - _worldPt2X);
            scaleY = (_mapPt1X - _mapPt2X) / (_worldPt1Y - _worldPt2Y);
            relX = (y - _worldPt1Y) * scaleY + _mapPt1X;
            relY = (x - _worldPt1X) * scaleX + _mapPt1Y;
            transformation = glm::translate(transformation, glm::vec3(-(relX * 435) + 60, -(256 - relY * 256) + 60, 0));
            break;

        default:
            warning("Unknown north axis");
    }

    setGlobalTransformationMatrix(transformation);
}

int Minimap::getNorthAxis() {
    return _northAxis;
}

} // End of namespace KotOR

} // End of namespace Engines