Merge 0.4.16 into stable-0.4

1 files changed, 131 insertions, 0 deletions

diff --git a/src/tileanimation.cpp b/src/tileanimation.cpp
new file mode 100644
index 000000000..67d27d396
--- /dev/null
+++ b/src/tileanimation.cpp
@@ -0,0 +1,131 @@
+/*
+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, u16 protocol_version) const
+{
+	if (protocol_version < 29) {
+		if (type == TAT_VERTICAL_FRAMES) {
+			writeU8(os, type);
+			writeU16(os, vertical_frames.aspect_w);
+			writeU16(os, vertical_frames.aspect_h);
+			writeF1000(os, vertical_frames.length);
+		} else {
+			writeU8(os, TAT_NONE);
+			writeU16(os, 1);
+			writeU16(os, 1);
+			writeF1000(os, 1.0);
+		}
+		return;
+	}
+
+	writeU8(os, type);
+	if (type == TAT_VERTICAL_FRAMES) {
+		writeU16(os, vertical_frames.aspect_w);
+		writeU16(os, vertical_frames.aspect_h);
+		writeF1000(os, vertical_frames.length);
+	} else if (type == TAT_SHEET_2D) {
+		writeU8(os, sheet_2d.frames_w);
+		writeU8(os, sheet_2d.frames_h);
+		writeF1000(os, sheet_2d.frame_length);
+	}
+}
+
+void TileAnimationParams::deSerialize(std::istream &is, u16 protocol_version)
+{
+	type = (TileAnimationType) readU8(is);
+	if (protocol_version < 29) {
+		vertical_frames.aspect_w = readU16(is);
+		vertical_frames.aspect_h = readU16(is);
+		vertical_frames.length = readF1000(is);
+		return;
+	}
+
+	if (type == TAT_VERTICAL_FRAMES) {
+		vertical_frames.aspect_w = readU16(is);
+		vertical_frames.aspect_h = readU16(is);
+		vertical_frames.length = readF1000(is);
+	} else if (type == TAT_SHEET_2D) {
+		sheet_2d.frames_w = readU8(is);
+		sheet_2d.frames_h = readU8(is);
+		sheet_2d.frame_length = readF1000(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);
+}