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) {
  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         } else if (type == TAT_SHEET_2D) {
  45                 writeU8(os, sheet_2d.frames_w);
  46                 writeU8(os, sheet_2d.frames_h);
  47                 writeF1000(os, sheet_2d.frame_length);
  48         }
  49 }
  50
  51 void TileAnimationParams::deSerialize(std::istream &is, u16 protocol_version)
  52 {
  53         type = (TileAnimationType) readU8(is);
  54         if (protocol_version < 29) {
  55                 vertical_frames.aspect_w = readU16(is);
  56                 vertical_frames.aspect_h = readU16(is);
  57                 vertical_frames.length = readF1000(is);
  58                 return;
  59         }
  60
  61         if (type == TAT_VERTICAL_FRAMES) {
  62                 vertical_frames.aspect_w = readU16(is);
  63                 vertical_frames.aspect_h = readU16(is);
  64                 vertical_frames.length = readF1000(is);
  65         } else if (type == TAT_SHEET_2D) {
  66                 sheet_2d.frames_w = readU8(is);
  67                 sheet_2d.frames_h = readU8(is);
  68                 sheet_2d.frame_length = readF1000(is);
  69         }
  70 }
  71
  72 void TileAnimationParams::determineParams(v2u32 texture_size, int *frame_count,
  73                 int *frame_length_ms, v2u32 *frame_size) const
  74 {
  75         if (type == TAT_VERTICAL_FRAMES) {
  76                 int frame_height = (float)texture_size.X /
  77                                 (float)vertical_frames.aspect_w *
  78                                 (float)vertical_frames.aspect_h;
  79                 int _frame_count = texture_size.Y / frame_height;
  80                 if (frame_count)
  81                         *frame_count = _frame_count;
  82                 if (frame_length_ms)
  83                         *frame_length_ms = 1000.0 * vertical_frames.length / _frame_count;
  84                 if (frame_size)
  85                         *frame_size = v2u32(texture_size.X, frame_height);
  86         } else if (type == TAT_SHEET_2D) {
  87                 if (frame_count)
  88                         *frame_count = sheet_2d.frames_w * sheet_2d.frames_h;
  89                 if (frame_length_ms)
  90                         *frame_length_ms = 1000 * sheet_2d.frame_length;
  91                 if (frame_size)
  92                         *frame_size = v2u32(texture_size.X / sheet_2d.frames_w, texture_size.Y / sheet_2d.frames_h);
  93         }
  94         // caller should check for TAT_NONE
  95 }
  96
  97 void TileAnimationParams::getTextureModifer(std::ostream &os, v2u32 texture_size, int frame) const
  98 {
  99         if (type == TAT_NONE)
 100                 return;
 101         if (type == TAT_VERTICAL_FRAMES) {
 102                 int frame_count;
 103                 determineParams(texture_size, &frame_count, NULL, NULL);
 104                 os << "^[verticalframe:" << frame_count << ":" << frame;
 105         } else if (type == TAT_SHEET_2D) {
 106                 int q, r;
 107                 q = frame / sheet_2d.frames_w;
 108                 r = frame % sheet_2d.frames_w;
 109                 os << "^[sheet:" << sheet_2d.frames_w << "x" << sheet_2d.frames_h
 110                         << ":" << r << "," << q;
 111         }
 112 }
 113
 114 v2f TileAnimationParams::getTextureCoords(v2u32 texture_size, int frame) const
 115 {
 116         v2u32 ret(0, 0);
 117         if (type == TAT_VERTICAL_FRAMES) {
 118                 int frame_height = (float)texture_size.X /
 119                                 (float)vertical_frames.aspect_w *
 120                                 (float)vertical_frames.aspect_h;
 121                 ret = v2u32(0, frame_height * frame);
 122         } else if (type == TAT_SHEET_2D) {
 123                 v2u32 frame_size;
 124                 determineParams(texture_size, NULL, NULL, &frame_size);
 125                 int q, r;
 126                 q = frame / sheet_2d.frames_w;
 127                 r = frame % sheet_2d.frames_w;
 128                 ret = v2u32(r * frame_size.X, q * frame_size.Y);
 129         }
 130         return v2f(ret.X / (float) texture_size.X, ret.Y / (float) texture_size.Y);
 131 }