CCmpWaterManager.cpp

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/* Copyright (C) 2012 Wildfire Games.
 * This file is part of 0 A.D.
 *
 * 0 A.D. 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.
 *
 * 0 A.D. 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 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "precompiled.h"

#include "simulation2/system/Component.h"
#include "ICmpWaterManager.h"

#include "graphics/RenderableObject.h"
#include "graphics/Terrain.h"
#include "renderer/Renderer.h"
#include "renderer/WaterManager.h"
#include "simulation2/MessageTypes.h"

class CCmpWaterManager : public ICmpWaterManager
{
public:
    static void ClassInit(CComponentManager& componentManager)
    {
        componentManager.SubscribeToMessageType(MT_Interpolate);
        componentManager.SubscribeToMessageType(MT_TerrainChanged);
    }

    DEFAULT_COMPONENT_ALLOCATOR(WaterManager)

    // Dynamic state:

    entity_pos_t m_WaterHeight;

    static std::string GetSchema()
    {
        return "<a:component type='system'/><empty/>";
    }

    virtual void Init(const CParamNode& UNUSED(paramNode))
    {
        SetWaterLevel(entity_pos_t::FromInt(5));
    }

    virtual void Deinit()
    {
    }

    virtual void Serialize(ISerializer& serialize)
    {
        serialize.NumberFixed_Unbounded("height", m_WaterHeight);
    }

    virtual void Deserialize(const CParamNode& paramNode, IDeserializer& deserialize)
    {
        Init(paramNode);

        deserialize.NumberFixed_Unbounded("height", m_WaterHeight);
    }

    virtual void HandleMessage(const CMessage& msg, bool UNUSED(global))
    {
        switch (msg.GetType())
        {
            case MT_Interpolate:
            {
                const CMessageInterpolate& msgData = static_cast<const CMessageInterpolate&> (msg);
                if (CRenderer::IsInitialised())
                    g_Renderer.GetWaterManager()->m_WaterTexTimer += msgData.deltaSimTime;
                break;
            }
            case MT_TerrainChanged:
            {
                // Tell the renderer to redraw the map.
                if (CRenderer::IsInitialised())
                {
                    const CMessageTerrainChanged& msgData = static_cast<const CMessageTerrainChanged&> (msg);
                    g_Renderer.GetWaterManager()->m_NeedInfoUpdate = true;
                    g_Renderer.GetWaterManager()->m_updatei0 = msgData.i0;
                    g_Renderer.GetWaterManager()->m_updatej0 = msgData.j0;
                    g_Renderer.GetWaterManager()->m_updatei1 = msgData.i1;
                    g_Renderer.GetWaterManager()->m_updatej1 = msgData.j1;
                    
                    GetSimContext().GetTerrain().MakeDirty(msgData.i0,msgData.j0,msgData.i1,msgData.j1,RENDERDATA_UPDATE_VERTICES);
                }
                break;
            }
        }
    }

    virtual void SetWaterLevel(entity_pos_t h)
    {
        m_WaterHeight = h;

        // Tell the terrain it'll need to recompute its cached render data
        GetSimContext().GetTerrain().MakeDirty(RENDERDATA_UPDATE_VERTICES);
    }

    virtual entity_pos_t GetWaterLevel(entity_pos_t UNUSED(x), entity_pos_t UNUSED(z))
    {
        return m_WaterHeight;
    }

    virtual float GetExactWaterLevel(float UNUSED(x), float UNUSED(z))
    {
        return m_WaterHeight.ToFloat();
    }
};

REGISTER_COMPONENT_TYPE(WaterManager)