mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-23 10:19:27 +00:00
a03d7b3ac2
svn-id: r46817
209 lines
4.6 KiB
C++
209 lines
4.6 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*/
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#include "teenagent/animation.h"
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#include "common/endian.h"
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namespace TeenAgent {
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Animation::Animation() : id(0), x(0), y(0), loop(true), paused(false), ignore(false), data(0), data_size(0), frames_count(0), frames(0), index(0) {
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}
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Surface *Animation::firstFrame() {
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if (frames == NULL || frames_count == 0)
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return NULL;
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Surface *r = frames;
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uint16 pos = READ_LE_UINT16(data + 1);
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if (pos != 0) {
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r->x = pos % 320;
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r->y = pos / 320;
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}
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return r;
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}
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Surface *Animation::currentFrame(int dt) {
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if (paused)
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return firstFrame();
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if (frames == NULL || frames_count == 0)
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return NULL;
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Surface *r;
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if (data != NULL) {
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uint32 frame = 3 * index;
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//debug(0, "%u/%u", index, data_size / 3);
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index += dt;
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if (!loop && index >= data_size / 3) {
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return NULL;
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}
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if (data[frame] - 1 >= frames_count) {
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warning("invalid frame %u(0x%x) (max %u) index %u, mod %u", frame, frame, frames_count, index - 1, data_size / 3);
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return NULL;
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}
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r = frames + data[frame] - 1;
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uint16 pos = READ_LE_UINT16(data + frame + 1);
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index %= (data_size / 3);
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if (pos != 0) {
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x = r->x = pos % 320;
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y = r->y = pos / 320;
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}
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} else {
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//debug(0, "index %u", index);
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r = frames + index;
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index += dt;
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index %= frames_count;
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}
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return r;
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}
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void Animation::restart() {
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paused = false;
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ignore = false;
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index = 0;
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}
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void Animation::free() {
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id = 0;
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x = y = 0;
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loop = true;
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paused = false;
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ignore = false;
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delete[] data;
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data = NULL;
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data_size = 0;
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frames_count = 0;
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delete[] frames;
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frames = NULL;
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index = 0;
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}
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void Animation::load(Common::SeekableReadStream *s, Type type) {
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//fixme: do not reload the same animation each time
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free();
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if (s == NULL && s->size() <= 1) {
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debug(1, "empty animation");
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return;
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}
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uint16 pos = 0;
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int off = 0;
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switch (type) {
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case kTypeLan:
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data_size = s->readUint16LE();
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if (s->eos()) {
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debug(1, "empty animation");
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return;
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}
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data_size -= 2;
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data = new byte[data_size];
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data_size = s->read(data, data_size);
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/* for (int i = 0; i < data_size; ++i) {
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debug(0, "%02x ", data[i]);
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}
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debug(0, ", %u frames", data_size / 3);
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*/
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frames_count = s->readByte();
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debug(1, "%u physical frames", frames_count);
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if (frames_count == 0)
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return;
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frames = new Surface[frames_count];
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s->skip(frames_count * 2 - 2); //sizes
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pos = s->readUint16LE();
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//debug(0, "pos?: %04x", pos);
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for (uint16 i = 0; i < frames_count; ++i) {
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frames[i].load(s, Surface::kTypeLan);
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frames[i].x = 0;
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frames[i].y = 0;
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}
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break;
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case kTypeInventory: {
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data_size = 3 * s->readByte();
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data = new byte[data_size];
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frames_count = 0;
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for (byte i = 0; i < data_size / 3; ++i) {
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int idx = i * 3;
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/* byte unk = */
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s->readByte();
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data[idx] = s->readByte();
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if (data[idx] == 0)
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data[idx] = 1; //fixme: investigate
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if (data[idx] > frames_count)
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frames_count = data[idx];
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data[idx + 1] = 0;
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data[idx + 2] = 0;
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//debug(0, "frame #%u", data[idx]);
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}
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frames = new Surface[frames_count];
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for (uint16 i = 0; i < frames_count; ++i) {
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frames[i].load(s, Surface::kTypeOns);
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}
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}
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break;
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case kTypeVaria:
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frames_count = s->readByte();
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debug(1, "loading varia resource, %u physical frames", frames_count);
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uint16 offset[255];
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for (byte i = 0; i < frames_count; ++i) {
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offset[i] = s->readUint16LE();
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//debug(0, "%u: %04x", i, offset[i]);
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}
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frames = new Surface[frames_count];
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for (uint16 i = 0; i < frames_count; ++i) {
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//debug(0, "%04x", offset[i]);
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s->seek(offset[i] + off);
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frames[i].load(s, Surface::kTypeOns);
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}
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break;
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}
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debug(0, "%u frames", data_size / 3);
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}
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Animation::~Animation() {
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free();
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}
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} // End of namespace TeenAgent
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