Line data    Source code

       1             : /* Copyright (C) 2022 Wildfire Games.
       2             :  * This file is part of 0 A.D.
       3             :  *
       4             :  * 0 A.D. is free software: you can redistribute it and/or modify
       5             :  * it under the terms of the GNU General Public License as published by
       6             :  * the Free Software Foundation, either version 2 of the License, or
       7             :  * (at your option) any later version.
       8             :  *
       9             :  * 0 A.D. is distributed in the hope that it will be useful,
      10             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      12             :  * GNU General Public License for more details.
      13             :  *
      14             :  * You should have received a copy of the GNU General Public License
      15             :  * along with 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
      16             :  */
      17             : 
      18             : #include "precompiled.h"
      19             : 
      20             : #include "Brushes.h"
      21             : 
      22             : #include "graphics/Color.h"
      23             : #include "graphics/Terrain.h"
      24             : #include "maths/MathUtil.h"
      25             : #include "ps/Game.h"
      26             : #include "ps/World.h"
      27             : #include "renderer/TerrainOverlay.h"
      28             : #include "simulation2/Simulation2.h"
      29             : #include "simulation2/system/SimContext.h"
      30             : 
      31             : #include <algorithm>
      32             : 
      33             : using namespace AtlasMessage;
      34             : 
      35           0 : class BrushTerrainOverlay : public TerrainOverlay
      36             : {
      37             : public:
      38           0 :     BrushTerrainOverlay(const Brush* brush)
      39           0 :         : TerrainOverlay(g_Game->GetSimulation2()->GetSimContext(), 300), m_Brush(brush)
      40             :     {
      41           0 :     }
      42             : 
      43           0 :     void GetTileExtents(
      44             :         ssize_t& min_i_inclusive, ssize_t& min_j_inclusive,
      45             :         ssize_t& max_i_inclusive, ssize_t& max_j_inclusive)
      46             :     {
      47           0 :         m_Brush->GetBottomLeft(min_i_inclusive, min_j_inclusive);
      48           0 :         m_Brush->GetTopRight(max_i_inclusive, max_j_inclusive);
      49             : 
      50             :         // But since brushes deal with vertices instead of tiles,
      51             :         // we don't want to include the top/right row
      52           0 :         --max_i_inclusive;
      53           0 :         --max_j_inclusive;
      54           0 :     }
      55             : 
      56           0 :     void ProcessTile(
      57             :         Renderer::Backend::IDeviceCommandContext* deviceCommandContext,
      58             :         ssize_t i, ssize_t j)
      59             :     {
      60             :         ssize_t i0, j0;
      61           0 :         m_Brush->GetBottomLeft(i0, j0);
      62             :         // Color this tile based on the average of the surrounding vertices
      63             :         float avg = (
      64           0 :             m_Brush->Get(i-i0, j-j0)   + m_Brush->Get(i-i0+1, j-j0) +
      65           0 :             m_Brush->Get(i-i0, j-j0+1) + m_Brush->Get(i-i0+1, j-j0+1)
      66           0 :         ) / 4.f;
      67           0 :         RenderTile(deviceCommandContext, CColor(0, 1, 0, avg*0.8f), false);
      68           0 :         if (avg > 0.1f)
      69           0 :             RenderTileOutline(deviceCommandContext, CColor(1, 1, 1, std::min(0.4f, avg-0.1f)), true);
      70           0 :     }
      71             : 
      72             :     const AtlasMessage::Brush* m_Brush;
      73             : };
      74             : 
      75           1 : Brush::Brush()
      76           1 : : m_W(0), m_H(0), m_TerrainOverlay(NULL)
      77             : {
      78           1 : }
      79             : 
      80           2 : Brush::~Brush()
      81             : {
      82           1 :     delete m_TerrainOverlay;
      83           1 : }
      84             : 
      85           0 : void Brush::SetData(ssize_t w, ssize_t h, const std::vector<float>& data)
      86             : {
      87           0 :     m_W = w;
      88           0 :     m_H = h;
      89             : 
      90           0 :     m_Data = data;
      91             : 
      92           0 :     ENSURE(data.size() == (size_t)(w*h));
      93           0 : }
      94             : 
      95           0 : void Brush::GetCentre(ssize_t& x, ssize_t& y) const
      96             : {
      97           0 :     CVector3D c = m_Centre;
      98           0 :     if (m_W % 2) c.X += TERRAIN_TILE_SIZE/2.f;
      99           0 :     if (m_H % 2) c.Z += TERRAIN_TILE_SIZE/2.f;
     100             :     ssize_t cx, cy;
     101           0 :     CTerrain::CalcFromPosition(c, cx, cy);
     102             : 
     103           0 :     x = cx;
     104           0 :     y = cy;
     105           0 : }
     106             : 
     107           0 : void Brush::GetBottomLeft(ssize_t& x, ssize_t& y) const
     108             : {
     109           0 :     GetCentre(x, y);
     110           0 :     x -= (m_W-1)/2;
     111           0 :     y -= (m_H-1)/2;
     112           0 : }
     113             : 
     114           0 : void Brush::GetTopRight(ssize_t& x, ssize_t& y) const
     115             : {
     116           0 :     GetBottomLeft(x, y);
     117           0 :     x += m_W-1;
     118           0 :     y += m_H-1;
     119           0 : }
     120             : 
     121           0 : void Brush::SetRenderEnabled(bool enabled)
     122             : {
     123           0 :     if (enabled && !m_TerrainOverlay)
     124             :     {
     125           0 :         m_TerrainOverlay = new BrushTerrainOverlay(this);
     126             :     }
     127           0 :     else if (!enabled && m_TerrainOverlay)
     128             :     {
     129           0 :         delete m_TerrainOverlay;
     130           0 :         m_TerrainOverlay = NULL;
     131             :     }
     132           0 : }
     133             : 
     134           2 : Brush AtlasMessage::g_CurrentBrush;