/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program 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, either version 3 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#include "common/str.h"
#include "ags/shared/ac/character_info.h"
#include "ags/shared/ac/game_version.h"
#include "ags/shared/util/stream.h"
#include "ags/shared/util/string_utils.h"
#include "ags/globals.h"

namespace AGS3 {

using namespace AGS::Shared;

void CharacterInfo::ReadBaseFields(Stream *in) {
	defview = in->ReadInt32();
	talkview = in->ReadInt32();
	view = in->ReadInt32();
	room = in->ReadInt32();
	prevroom = in->ReadInt32();
	x = in->ReadInt32();
	y = in->ReadInt32();
	wait = in->ReadInt32();
	flags = in->ReadInt32();
	following = in->ReadInt16();
	followinfo = in->ReadInt16();
	idleview = in->ReadInt32();
	idletime = in->ReadInt16();
	idleleft = in->ReadInt16();
	transparency = in->ReadInt16();
	baseline = in->ReadInt16();
	activeinv = in->ReadInt32();
	talkcolor = in->ReadInt32();
	thinkview = in->ReadInt32();
	blinkview = in->ReadInt16();
	blinkinterval = in->ReadInt16();
	blinktimer = in->ReadInt16();
	blinkframe = in->ReadInt16();
	walkspeed_y = in->ReadInt16();
	pic_yoffs = in->ReadInt16();
	z = in->ReadInt32();
	walkwait = in->ReadInt32();
	speech_anim_speed = in->ReadInt16();
	idle_anim_speed = in->ReadInt16();
	blocking_width = in->ReadInt16();
	blocking_height = in->ReadInt16();
	index_id = in->ReadInt32();
	pic_xoffs = in->ReadInt16();
	walkwaitcounter = in->ReadInt16();
	loop = in->ReadInt16();
	frame = in->ReadInt16();
	walking = in->ReadInt16();
	animating = in->ReadInt16();
	walkspeed = in->ReadInt16();
	animspeed = in->ReadInt16();
	in->ReadArrayOfInt16(inv, MAX_INV);
	actx = in->ReadInt16();
	acty = in->ReadInt16();
}

void CharacterInfo::WriteBaseFields(Stream *out) const {
	out->WriteInt32(defview);
	out->WriteInt32(talkview);
	out->WriteInt32(view);
	out->WriteInt32(room);
	out->WriteInt32(prevroom);
	out->WriteInt32(x);
	out->WriteInt32(y);
	out->WriteInt32(wait);
	out->WriteInt32(flags);
	out->WriteInt16(following);
	out->WriteInt16(followinfo);
	out->WriteInt32(idleview);
	out->WriteInt16(idletime);
	out->WriteInt16(idleleft);
	out->WriteInt16(transparency);
	out->WriteInt16(baseline);
	out->WriteInt32(activeinv);
	out->WriteInt32(talkcolor);
	out->WriteInt32(thinkview);
	out->WriteInt16(blinkview);
	out->WriteInt16(blinkinterval);
	out->WriteInt16(blinktimer);
	out->WriteInt16(blinkframe);
	out->WriteInt16(walkspeed_y);
	out->WriteInt16(pic_yoffs);
	out->WriteInt32(z);
	out->WriteInt32(walkwait);
	out->WriteInt16(speech_anim_speed);
	out->WriteInt16(idle_anim_speed);
	out->WriteInt16(blocking_width);
	out->WriteInt16(blocking_height);
	out->WriteInt32(index_id);
	out->WriteInt16(pic_xoffs);
	out->WriteInt16(walkwaitcounter);
	out->WriteInt16(loop);
	out->WriteInt16(frame);
	out->WriteInt16(walking);
	out->WriteInt16(animating);
	out->WriteInt16(walkspeed);
	out->WriteInt16(animspeed);
	out->WriteArrayOfInt16(inv, MAX_INV);
	out->WriteInt16(actx);
	out->WriteInt16(acty);
}

void CharacterInfo::ReadFromFile(Stream *in, CharacterInfo2 &chinfo2, GameDataVersion data_ver) {
	ReadBaseFields(in);
	StrUtil::ReadCStrCount(name, in, LEGACY_MAX_CHAR_NAME_LEN);
	StrUtil::ReadCStrCount(scrname, in, LEGACY_MAX_SCRIPT_NAME_LEN);
	on = in->ReadInt8();
	in->ReadInt8(); // alignment padding to int32

	// Upgrade data
	if (data_ver < kGameVersion_360_16) {
		idle_anim_speed = animspeed + 5;
	}
	// Assign unrestricted names from legacy fields
	chinfo2.name_new = name;
	chinfo2.scrname_new = scrname;
}

void CharacterInfo::WriteToFile(Stream *out) const {
	WriteBaseFields(out);
	out->Write(name, LEGACY_MAX_CHAR_NAME_LEN);
	out->Write(scrname, LEGACY_MAX_SCRIPT_NAME_LEN);
	out->WriteInt8(on);
	out->WriteInt8(0); // alignment padding to int32
}

void CharacterInfo::ReadFromSavegame(Stream *in, CharacterInfo2 &chinfo2, CharacterSvgVersion save_ver) {
	ReadBaseFields(in);
	if (save_ver < kCharSvgVersion_36115) { // Fixed-size name and scriptname
		chinfo2.name_new.ReadCount(in, LEGACY_MAX_CHAR_NAME_LEN);
		in->Seek(LEGACY_MAX_SCRIPT_NAME_LEN); // skip legacy scriptname
											  // (don't overwrite static data from save!)
	} else {
		chinfo2.name_new = StrUtil::ReadString(in);
	}
	on = in->ReadInt8();

	//
	// Upgrade restored data
	if (save_ver < kCharSvgVersion_36025) {
		idle_anim_speed = animspeed + 5;
	}
	// Fill legacy name fields, for compatibility with old scripts and plugins
	snprintf(name, LEGACY_MAX_CHAR_NAME_LEN, "%s", chinfo2.name_new.GetCStr());
}

void CharacterInfo::WriteToSavegame(Stream *out, const CharacterInfo2 &chinfo2) const {
	WriteBaseFields(out);
	StrUtil::WriteString(chinfo2.name_new, out); // kCharSvgVersion_36115
	out->WriteInt8(on);
}

#if defined (OBSOLETE)
#define COPY_CHAR_VAR(name) ci->name = oci->name

void ConvertOldCharacterToNew(OldCharacterInfo *oci, CharacterInfo *ci) {
	COPY_CHAR_VAR(defview);
	COPY_CHAR_VAR(talkview);
	COPY_CHAR_VAR(view);
	COPY_CHAR_VAR(room);
	COPY_CHAR_VAR(prevroom);
	COPY_CHAR_VAR(x);
	COPY_CHAR_VAR(y);
	COPY_CHAR_VAR(wait);
	COPY_CHAR_VAR(flags);
	COPY_CHAR_VAR(following);
	COPY_CHAR_VAR(followinfo);
	COPY_CHAR_VAR(idleview);
	COPY_CHAR_VAR(idletime);
	COPY_CHAR_VAR(idleleft);
	COPY_CHAR_VAR(transparency);
	COPY_CHAR_VAR(baseline);
	COPY_CHAR_VAR(activeinv);
	COPY_CHAR_VAR(loop);
	COPY_CHAR_VAR(frame);
	COPY_CHAR_VAR(walking);
	COPY_CHAR_VAR(animating);
	COPY_CHAR_VAR(walkspeed);
	COPY_CHAR_VAR(animspeed);
	COPY_CHAR_VAR(actx);
	COPY_CHAR_VAR(acty);
	COPY_CHAR_VAR(on);
	snprintf(ci->name, sizeof(CharacterInfo::name), "%s", oci->name);
	snprintf(ci->scrname, sizeof(CharacterInfo::scrname), "%s", oci->scrname);
	memcpy(&ci->inv[0], &oci->inv[0], sizeof(short) * 100);
	// move the talking colour into the struct and remove from flags
	ci->talkcolor = (oci->flags & OCHF_SPEECHCOL) >> OCHF_SPEECHCOLSHIFT;
	ci->flags = ci->flags & (~OCHF_SPEECHCOL);
}
#endif // OBSOLETE

} // namespace AGS3