src/tileanimation.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2016 sfan5 <sfan5@live.de>
   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 #include "tileanimation.h"
  20 #include "util/serialize.h"
  21
  22 void TileAnimationParams::serialize(std::ostream &os, u16 protocol_version) const
  23 {
  24         if(protocol_version < 29 /* TODO bump */) {
  25                 if (type == TAT_VERTICAL_FRAMES) {
  26                         writeU8(os, type);
  27                         writeU16(os, vertical_frames.aspect_w);
  28                         writeU16(os, vertical_frames.aspect_h);
  29                         writeF1000(os, vertical_frames.length);
  30                 } else {
  31                         writeU8(os, TAT_NONE);
  32                         writeU16(os, 1);
  33                         writeU16(os, 1);
  34                         writeF1000(os, 1.0);
  35                 }
  36                 return;
  37         }
  38
  39         writeU8(os, type);
  40         if (type == TAT_VERTICAL_FRAMES) {
  41                 writeU16(os, vertical_frames.aspect_w);
  42                 writeU16(os, vertical_frames.aspect_h);
  43                 writeF1000(os, vertical_frames.length);
  44         }
  45 }
  46
  47 void TileAnimationParams::deSerialize(std::istream &is, u16 protocol_version)
  48 {
  49         type = (TileAnimationType) readU8(is);
  50         if(protocol_version < 29 /* TODO bump */) {
  51                 vertical_frames.aspect_w = readU16(is);
  52                 vertical_frames.aspect_h = readU16(is);
  53                 vertical_frames.length = readF1000(is);
  54                 return;
  55         }
  56
  57         if(type == TAT_VERTICAL_FRAMES) {
  58                 vertical_frames.aspect_w = readU16(is);
  59                 vertical_frames.aspect_h = readU16(is);
  60                 vertical_frames.length = readF1000(is);
  61         }
  62 }
  63
  64 void TileAnimationParams::determineParams(v2u32 texture_size, int *frame_count, int *frame_length_ms) const
  65 {
  66         if (type == TAT_NONE) {
  67                 *frame_count = 1;
  68                 *frame_length_ms = 1000;
  69                 return;
  70         }
  71         int frame_height = (float)texture_size.X /
  72                         (float)vertical_frames.aspect_w *
  73                         (float)vertical_frames.aspect_h;
  74         if (frame_count)
  75                 *frame_count = texture_size.Y / frame_height;
  76         if (frame_length_ms)
  77                 *frame_length_ms = 1000.0 * vertical_frames.length / (texture_size.Y / frame_height);
  78 }
  79
  80 void TileAnimationParams::getTextureModifer(std::ostream &os, v2u32 texture_size, int frame) const
  81 {
  82         if (type == TAT_NONE)
  83                 return;
  84         int frame_count;
  85         determineParams(texture_size, &frame_count, NULL);
  86         os << "^[verticalframe:" << frame_count << ":" << frame;
  87 }