tileanimation.h

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/*
Minetest
Copyright (C) 2016 sfan5 <sfan5@live.de>
 
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
 
This program 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 Lesser General Public License for more details.
 
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
 
#pragma once
 
#include <iostream>
#include "irrlichttypes_bloated.h"
 
enum TileAnimationType
{
    TAT_NONE = 0,
    TAT_VERTICAL_FRAMES = 1,
    TAT_SHEET_2D = 2,
};
 
struct TileAnimationParams
{
    enum TileAnimationType type;
    union
    {
        // struct {
        // } none;
        struct
        {
            int aspect_w; // width for aspect ratio
            int aspect_h; // height for aspect ratio
            float length; // seconds
        } vertical_frames;
        struct
        {
            int frames_w;       // number of frames left-to-right
            int frames_h;       // number of frames top-to-bottom
            float frame_length; // seconds
        } sheet_2d;
    };
 
    void serialize(std::ostream &os, u8 tiledef_version) const;
    void deSerialize(std::istream &is, u8 tiledef_version);
    void determineParams(v2u32 texture_size, int *frame_count, int *frame_length_ms,
            v2u32 *frame_size) const;
    void getTextureModifer(std::ostream &os, v2u32 texture_size, int frame) const;
    v2f getTextureCoords(v2u32 texture_size, int frame) const;
};