newgrf_act12.cpp

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/*
 * This file is part of OpenTTD.
 * OpenTTD 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, version 2.
 * OpenTTD 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 OpenTTD. If not, see <https://www.gnu.org/licenses/old-licenses/gpl-2.0>.
 */

 
#include "../stdafx.h"
#include "../debug.h"
#include "../fontcache.h"
#include "../spritecache.h"
#include "newgrf_bytereader.h"
#include "newgrf_internal.h"
 
#include "../safeguards.h"

static void LoadFontGlyph(ByteReader &buf)
{
  /* <12> <num_def> <font_size> <num_char> <base_char>
   *
   * B num_def      Number of definitions
   * B font_size    Size of font (0 = normal, 1 = small, 2 = large, 3 = mono)
   * B num_char     Number of consecutive glyphs
   * W base_char    First character index */
 
  uint8_t num_def = buf.ReadByte();
 
  for (uint i = 0; i < num_def; i++) {
    FontSize size    = (FontSize)buf.ReadByte();
    uint8_t  num_char  = buf.ReadByte();
    uint16_t base_char = buf.ReadWord();
 
    if (size >= FS_END) {
      GrfMsg(1, "LoadFontGlyph: Size {} is not supported, ignoring", size);
    }
 
    GrfMsg(7, "LoadFontGlyph: Loading {} glyph(s) at 0x{:04X} for size {}", num_char, base_char, size);
 
    for (uint c = 0; c < num_char; c++) {
      if (size < FS_END) SetUnicodeGlyph(size, base_char + c, _cur_gps.spriteid);
      _cur_gps.nfo_line++;
      LoadNextSprite(_cur_gps.spriteid++, *_cur_gps.file, _cur_gps.nfo_line);
    }
  }
}

static void SkipAct12(ByteReader &buf)
{
  /* <12> <num_def> <font_size> <num_char> <base_char>
   *
   * B num_def      Number of definitions
   * B font_size    Size of font (0 = normal, 1 = small, 2 = large)
   * B num_char     Number of consecutive glyphs
   * W base_char    First character index */
 
  uint8_t num_def = buf.ReadByte();
 
  for (uint i = 0; i < num_def; i++) {
    /* Ignore 'size' byte */
    buf.ReadByte();
 
    /* Sum up number of characters */
    _cur_gps.skip_sprites += buf.ReadByte();
 
    /* Ignore 'base_char' word */
    buf.ReadWord();
  }
 
  GrfMsg(3, "SkipAct12: Skipping {} sprites", _cur_gps.skip_sprites);
}
 
template <> void GrfActionHandler<0x12>::FileScan(ByteReader &buf) { SkipAct12(buf); }
template <> void GrfActionHandler<0x12>::SafetyScan(ByteReader &buf) { SkipAct12(buf); }
template <> void GrfActionHandler<0x12>::LabelScan(ByteReader &buf) { SkipAct12(buf); }
template <> void GrfActionHandler<0x12>::Init(ByteReader &buf) { SkipAct12(buf); }
template <> void GrfActionHandler<0x12>::Reserve(ByteReader &buf) { SkipAct12(buf); }
template <> void GrfActionHandler<0x12>::Activation(ByteReader &buf) { LoadFontGlyph(buf); }