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/* Copyright (C) 2009 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 "Brushes.h"
#include "ps/Game.h"
#include "ps/Shapes.h"
#include "ps/World.h"
#include "graphics/Terrain.h"
#include "lib/ogl.h"
#include "maths/MathUtil.h"
#include "renderer/TerrainOverlay.h"
#include "simulation2/Simulation2.h"
#include "simulation2/system/SimContext.h"
using namespace AtlasMessage;
class BrushTerrainOverlay : public TerrainOverlay
{
public:
BrushTerrainOverlay(const Brush* brush)
: TerrainOverlay(g_Game->GetSimulation2()->GetSimContext(), 300), m_Brush(brush)
{
}
void GetTileExtents(
ssize_t& min_i_inclusive, ssize_t& min_j_inclusive,
ssize_t& max_i_inclusive, ssize_t& max_j_inclusive)
{
m_Brush->GetBottomLeft(min_i_inclusive, min_j_inclusive);
m_Brush->GetTopRight(max_i_inclusive, max_j_inclusive);
// But since brushes deal with vertices instead of tiles,
// we don't want to include the top/right row
--max_i_inclusive;
--max_j_inclusive;
}
void ProcessTile(ssize_t i, ssize_t j)
{
ssize_t i0, j0;
m_Brush->GetBottomLeft(i0, j0);
// Color this tile based on the average of the surrounding vertices
float avg = (
m_Brush->Get(i-i0, j-j0) + m_Brush->Get(i-i0+1, j-j0) +
m_Brush->Get(i-i0, j-j0+1) + m_Brush->Get(i-i0+1, j-j0+1)
) / 4.f;
RenderTile(CColor(0, 1, 0, avg*0.8f), false);
if (avg > 0.1f)
RenderTileOutline(CColor(1, 1, 1, std::min(0.4f, avg-0.1f)), 1, true);
}
const AtlasMessage::Brush* m_Brush;
};
Brush::Brush()
: m_W(0), m_H(0), m_TerrainOverlay(NULL)
{
}
Brush::~Brush()
{
delete m_TerrainOverlay;
}
void Brush::SetData(ssize_t w, ssize_t h, const std::vector<float>& data)
{
m_W = w;
m_H = h;
m_Data = data;
ENSURE(data.size() == (size_t)(w*h));
}
void Brush::GetCentre(ssize_t& x, ssize_t& y) const
{
CVector3D c = m_Centre;
if (m_W % 2) c.X += TERRAIN_TILE_SIZE/2.f;
if (m_H % 2) c.Z += TERRAIN_TILE_SIZE/2.f;
ssize_t cx, cy;
CTerrain::CalcFromPosition(c, cx, cy);
x = cx;
y = cy;
}
void Brush::GetBottomLeft(ssize_t& x, ssize_t& y) const
{
GetCentre(x, y);
x -= (m_W-1)/2;
y -= (m_H-1)/2;
}
void Brush::GetTopRight(ssize_t& x, ssize_t& y) const
{
GetBottomLeft(x, y);
x += m_W-1;
y += m_H-1;
}
void Brush::SetRenderEnabled(bool enabled)
{
if (enabled && !m_TerrainOverlay)
{
m_TerrainOverlay = new BrushTerrainOverlay(this);
}
else if (!enabled && m_TerrainOverlay)
{
delete m_TerrainOverlay;
m_TerrainOverlay = NULL;
}
}
Brush AtlasMessage::g_CurrentBrush;
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