src/minimap.h

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2015 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #ifndef MINIMAP_HEADER
  21 #define MINIMAP_HEADER
  22
  23 #include "irrlichttypes_extrabloated.h"
  24 #include "client.h"
  25 #include "voxel.h"
  26 #include "threading/mutex.h"
  27 #include "threading/semaphore.h"
  28 #include <map>
  29 #include <string>
  30 #include <vector>
  31
  32 #define MINIMAP_MAX_SX 512
  33 #define MINIMAP_MAX_SY 512
  34
  35
  36 enum MinimapMode {
  37         MINIMAP_MODE_OFF,
  38         MINIMAP_MODE_SURFACEx1,
  39         MINIMAP_MODE_SURFACEx2,
  40         MINIMAP_MODE_SURFACEx4,
  41         MINIMAP_MODE_RADARx1,
  42         MINIMAP_MODE_RADARx2,
  43         MINIMAP_MODE_RADARx4,
  44         MINIMAP_MODE_COUNT,
  45 };
  46
  47 struct MinimapModeDef {
  48         bool is_radar;
  49         u16 scan_height;
  50         u16 map_size;
  51 };
  52
  53 struct MinimapPixel {
  54         u16 id;
  55         u16 height;
  56         u16 air_count;
  57         u16 light;
  58 };
  59
  60 struct MinimapMapblock {
  61         void getMinimapNodes(VoxelManipulator *vmanip, v3s16 pos);
  62
  63         MinimapPixel data[MAP_BLOCKSIZE * MAP_BLOCKSIZE];
  64 };
  65
  66 struct MinimapData {
  67         bool is_radar;
  68         MinimapMode mode;
  69         v3s16 pos;
  70         v3s16 old_pos;
  71         u16 scan_height;
  72         u16 map_size;
  73         MinimapPixel minimap_scan[MINIMAP_MAX_SX * MINIMAP_MAX_SY];
  74         bool map_invalidated;
  75         bool minimap_shape_round;
  76         video::IImage *minimap_image;
  77         video::IImage *heightmap_image;
  78         video::IImage *minimap_mask_round;
  79         video::IImage *minimap_mask_square;
  80         video::ITexture *texture;
  81         video::ITexture *heightmap_texture;
  82         video::ITexture *minimap_overlay_round;
  83         video::ITexture *minimap_overlay_square;
  84         video::ITexture *player_marker;
  85 };
  86
  87 struct QueuedMinimapUpdate {
  88         v3s16 pos;
  89         MinimapMapblock *data;
  90 };
  91
  92 class MinimapUpdateThread : public UpdateThread {
  93 public:
  94         MinimapUpdateThread() : UpdateThread("Minimap") {}
  95         virtual ~MinimapUpdateThread();
  96
  97         void getMap(v3s16 pos, s16 size, s16 height, bool radar);
  98         MinimapPixel *getMinimapPixel(v3s16 pos, s16 height, s16 *pixel_height);
  99         s16 getAirCount(v3s16 pos, s16 height);
 100         video::SColor getColorFromId(u16 id);
 101
 102         void enqueueBlock(v3s16 pos, MinimapMapblock *data);
 103
 104         bool pushBlockUpdate(v3s16 pos, MinimapMapblock *data);
 105         bool popBlockUpdate(QueuedMinimapUpdate *update);
 106
 107         MinimapData *data;
 108
 109 protected:
 110         virtual void doUpdate();
 111
 112 private:
 113         Mutex m_queue_mutex;
 114         std::deque<QueuedMinimapUpdate> m_update_queue;
 115         std::map<v3s16, MinimapMapblock *> m_blocks_cache;
 116 };
 117
 118 class Mapper {
 119 public:
 120         Mapper(IrrlichtDevice *device, Client *client);
 121         ~Mapper();
 122
 123         void addBlock(v3s16 pos, MinimapMapblock *data);
 124
 125         v3f getYawVec();
 126         MinimapMode getMinimapMode();
 127
 128         void setPos(v3s16 pos);
 129         void setAngle(f32 angle);
 130         void setMinimapMode(MinimapMode mode);
 131         void toggleMinimapShape();
 132
 133
 134         video::ITexture *getMinimapTexture();
 135
 136         void blitMinimapPixelsToImageRadar(video::IImage *map_image);
 137         void blitMinimapPixelsToImageSurface(video::IImage *map_image,
 138                 video::IImage *heightmap_image);
 139
 140         scene::SMeshBuffer *getMinimapMeshBuffer();
 141         void drawMinimap();
 142
 143         video::IVideoDriver *driver;
 144         MinimapData *data;
 145
 146 private:
 147         ITextureSource *m_tsrc;
 148         IShaderSource *m_shdrsrc;
 149         INodeDefManager *m_ndef;
 150         MinimapUpdateThread *m_minimap_update_thread;
 151         scene::SMeshBuffer *m_meshbuffer;
 152         bool m_enable_shaders;
 153         u16 m_surface_mode_scan_height;
 154         f32 m_angle;
 155         Mutex m_mutex;
 156 };
 157
 158 #endif