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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.
*/
#include "tileanimation.h"
#include "util/serialize.h"
void TileAnimationParams::serialize(std::ostream &os, u8 tiledef_version) const
{
writeU8(os, type);
if (type == TAT_VERTICAL_FRAMES) {
writeU16(os, vertical_frames.aspect_w);
writeU16(os, vertical_frames.aspect_h);
writeF32(os, vertical_frames.length);
} else if (type == TAT_SHEET_2D) {
writeU8(os, sheet_2d.frames_w);
writeU8(os, sheet_2d.frames_h);
writeF32(os, sheet_2d.frame_length);
}
}
void TileAnimationParams::deSerialize(std::istream &is, u8 tiledef_version)
{
type = (TileAnimationType) readU8(is);
if (type == TAT_VERTICAL_FRAMES) {
vertical_frames.aspect_w = readU16(is);
vertical_frames.aspect_h = readU16(is);
vertical_frames.length = readF32(is);
} else if (type == TAT_SHEET_2D) {
sheet_2d.frames_w = readU8(is);
sheet_2d.frames_h = readU8(is);
sheet_2d.frame_length = readF32(is);
}
}
void TileAnimationParams::determineParams(v2u32 texture_size, int *frame_count,
int *frame_length_ms, v2u32 *frame_size) const
{
if (type == TAT_VERTICAL_FRAMES) {
int frame_height = (float)texture_size.X /
(float)vertical_frames.aspect_w *
(float)vertical_frames.aspect_h;
int _frame_count = texture_size.Y / frame_height;
if (frame_count)
*frame_count = _frame_count;
if (frame_length_ms)
*frame_length_ms = 1000.0 * vertical_frames.length / _frame_count;
if (frame_size)
*frame_size = v2u32(texture_size.X, frame_height);
} else if (type == TAT_SHEET_2D) {
if (frame_count)
*frame_count = sheet_2d.frames_w * sheet_2d.frames_h;
if (frame_length_ms)
*frame_length_ms = 1000 * sheet_2d.frame_length;
if (frame_size)
*frame_size = v2u32(texture_size.X / sheet_2d.frames_w, texture_size.Y / sheet_2d.frames_h);
}
// caller should check for TAT_NONE
}
void TileAnimationParams::getTextureModifer(std::ostream &os, v2u32 texture_size, int frame) const
{
if (type == TAT_NONE)
return;
if (type == TAT_VERTICAL_FRAMES) {
int frame_count;
determineParams(texture_size, &frame_count, NULL, NULL);
os << "^[verticalframe:" << frame_count << ":" << frame;
} else if (type == TAT_SHEET_2D) {
int q, r;
q = frame / sheet_2d.frames_w;
r = frame % sheet_2d.frames_w;
os << "^[sheet:" << sheet_2d.frames_w << "x" << sheet_2d.frames_h
<< ":" << r << "," << q;
}
}
v2f TileAnimationParams::getTextureCoords(v2u32 texture_size, int frame) const
{
v2u32 ret(0, 0);
if (type == TAT_VERTICAL_FRAMES) {
int frame_height = (float)texture_size.X /
(float)vertical_frames.aspect_w *
(float)vertical_frames.aspect_h;
ret = v2u32(0, frame_height * frame);
} else if (type == TAT_SHEET_2D) {
v2u32 frame_size;
determineParams(texture_size, NULL, NULL, &frame_size);
int q, r;
q = frame / sheet_2d.frames_w;
r = frame % sheet_2d.frames_w;
ret = v2u32(r * frame_size.X, q * frame_size.Y);
}
return v2f(ret.X / (float) texture_size.X, ret.Y / (float) texture_size.Y);
}
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