32bpp_anim.hpp

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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>.
 */

 
#ifndef BLITTER_32BPP_ANIM_HPP
#define BLITTER_32BPP_ANIM_HPP
 
#include "32bpp_optimized.hpp"

class Blitter_32bppAnim : public Blitter_32bppOptimized {
protected:
  uint16_t *anim_buf;    
  std::unique_ptr<uint16_t[]> anim_alloc; 
  int anim_buf_width;  
  int anim_buf_height; 
  int anim_buf_pitch;  
  Palette palette;     
 
public:
  Blitter_32bppAnim() :
    anim_buf(nullptr),
    anim_buf_width(0),
    anim_buf_height(0),
    anim_buf_pitch(0)
  {
    this->palette = _cur_palette;
  }
 
  void Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom) override;
  void DrawColourMappingRect(void *dst, int width, int height, PaletteID pal) override;
  void SetPixel(void *video, int x, int y, PixelColour colour) override;
  void DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, PixelColour colour, int width, int dash) override;
  void DrawRect(void *video, int width, int height, PixelColour colour) override;
  void CopyFromBuffer(void *video, const void *src, int width, int height) override;
  void CopyToBuffer(const void *video, void *dst, int width, int height) override;
  void ScrollBuffer(void *video, int &left, int &top, int &width, int &height, int scroll_x, int scroll_y) override;
  size_t BufferSize(uint width, uint height) override;
  void PaletteAnimate(const Palette &palette) override;
  Blitter::PaletteAnimation UsePaletteAnimation() override;
 
  std::string_view GetName() override { return "32bpp-anim"; }
  void PostResize() override;

  inline Colour LookupColourInPalette(uint index)
  {
    return this->palette.palette[index];
  }
 
  inline int ScreenToAnimOffset(const uint32_t *video)
  {
    int raw_offset = video - (const uint32_t *)_screen.dst_ptr;
    if (_screen.pitch == this->anim_buf_pitch) return raw_offset;
    int lines = raw_offset / _screen.pitch;
    int across = raw_offset % _screen.pitch;
    return across + (lines * this->anim_buf_pitch);
  }
 
  template <BlitterMode mode> void Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom);
};

class FBlitter_32bppAnim : public BlitterFactory {
public:
  FBlitter_32bppAnim() : BlitterFactory("32bpp-anim", "32bpp Animation Blitter (palette animation)") {}
  std::unique_ptr<Blitter> CreateInstance() override { return std::make_unique<Blitter_32bppAnim>(); }
};
 
#endif /* BLITTER_32BPP_ANIM_HPP */