blockinginforenderer.cpp

/***************************************************************************
 *   Copyright (C) 2005-2008 by the FIFE team                              *
 *   http://www.fifengine.de                                               *
 *   This file is part of FIFE.                                            *
 *                                                                         *
 *   FIFE is free software; you can redistribute it and/or                 *
 *   modify it under the terms of the GNU Lesser General Public            *
 *   License as published by the Free Software Foundation; either          *
 *   version 2.1 of the License, or (at your option) any later version.    *
 *                                                                         *
 *   This library 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     *
 *   Lesser General Public License for more details.                       *
 *                                                                         *
 *   You should have received a copy of the GNU Lesser General Public      *
 *   License along with this library; if not, write to the                 *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
 ***************************************************************************/

// Standard C++ library includes

// 3rd party library includes

// FIFE includes
// These includes are split up in two parts, separated by one empty line
// First block: files included from the FIFE root src directory
// Second block: files included from the same folder
#include "video/renderbackend.h"
#include "util/math/fife_math.h"
#include "util/log/logger.h"
#include "model/metamodel/grids/cellgrid.h"
#include "model/structures/instance.h"
#include "model/structures/layer.h"
#include "model/structures/location.h"

#include "view/camera.h"
#include "blockinginforenderer.h"


namespace FIFE {
    static Logger _log(LM_VIEWVIEW);

    BlockingInfoRenderer::BlockingInfoRenderer(RenderBackend* renderbackend, int32_t position):
        RendererBase(renderbackend, position) {
        setEnabled(false);
        m_color.r = 0;
        m_color.g = 255;
        m_color.b = 0;
    }

    BlockingInfoRenderer::BlockingInfoRenderer(const BlockingInfoRenderer& old):
        RendererBase(old),
        m_color(old.m_color) {
        setEnabled(false);
    }

    RendererBase* BlockingInfoRenderer::clone() {
        return new BlockingInfoRenderer(*this);
    }

    BlockingInfoRenderer::~BlockingInfoRenderer() {
    }

    BlockingInfoRenderer* BlockingInfoRenderer::getInstance(IRendererContainer* cnt) {
        return dynamic_cast<BlockingInfoRenderer*>(cnt->getRenderer("BlockingInfoRenderer"));
    }

    void BlockingInfoRenderer::render(Camera* cam, Layer* layer, RenderList& instances) {
        CellGrid* cg = layer->getCellGrid();
        if (!cg) {
            FL_WARN(_log, "No cellgrid assigned to layer, cannot draw grid");
            return;
        }
        
        Rect cv = cam->getViewPort();
        RenderList::const_iterator instance_it = instances.begin();
        for (;instance_it != instances.end(); ++instance_it) {
            Instance* instance = (*instance_it)->instance;
            if (!instance->getObject()->isBlocking() || !instance->isBlocking()) {
                continue;
            }
            std::vector<ExactModelCoordinate> vertices;
            cg->getVertices(vertices, instance->getLocationRef().getLayerCoordinates());
            std::vector<ExactModelCoordinate>::const_iterator it = vertices.begin();
            int32_t halfind = vertices.size() / 2;
            ScreenPoint firstpt = cam->toScreenCoordinates(cg->toMapCoordinates(*it));
            Point pt1(firstpt.x, firstpt.y);
            Point pt2;
            ++it;
            for (; it != vertices.end(); it++) {
                ScreenPoint pts = cam->toScreenCoordinates(cg->toMapCoordinates(*it));
                pt2.x = pts.x; pt2.y = pts.y;
                Point cpt1 = pt1;
                Point cpt2 = pt2;
                m_renderbackend->drawLine(cpt1, cpt2, m_color.r, m_color.g, m_color.b);
                pt1 = pt2;
            }
            m_renderbackend->drawLine(pt2, Point(firstpt.x, firstpt.y), m_color.r, m_color.g, m_color.b);
            ScreenPoint spt1 = cam->toScreenCoordinates(cg->toMapCoordinates(vertices[0]));
            Point pt3(spt1.x, spt1.y);
            ScreenPoint spt2 = cam->toScreenCoordinates(cg->toMapCoordinates(vertices[halfind]));
            Point pt4(spt2.x, spt2.y);
            m_renderbackend->drawLine(pt3, pt4, m_color.r, m_color.g, m_color.b);
        }
    }

    void BlockingInfoRenderer::setColor(uint8_t r, uint8_t g, uint8_t b) {
        m_color.r = r;
        m_color.g = g;
        m_color.b = b;
    }
}