/* 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 2
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-11-0/engines/cine/prc.cpp $
 * $Id: prc.cpp 30459 2008-01-12 23:07:51Z sev $
 *
 */


#include "common/endian.h"

#include "cine/cine.h"
#include "cine/various.h"

#include "common/config-manager.h"

namespace Cine {

prcLinkedListStruct globalScriptsHead;
prcLinkedListStruct objScriptList;

//char currentPrcName[20];

void resetglobalScriptsHead(void) {
	globalScriptsHead.next = NULL;
	globalScriptsHead.scriptIdx = -1;
}

void freePrcLinkedList(void) {
	prcLinkedListStruct *currentHead = globalScriptsHead.next;

	while (currentHead) {
		prcLinkedListStruct *temp;

		assert(currentHead);

		temp = currentHead->next;

		delete currentHead;

		currentHead = temp;
	}

	resetglobalScriptsHead();
}

void loadPrc(const char *pPrcName) {
	byte i;
	uint16 numScripts;
	byte *scriptPtr, *dataPtr;

	assert(pPrcName);

	for (i = 0; i < NUM_MAX_SCRIPT; i++) {
		if (scriptTable[i].ptr) {
			assert(scriptTable[i].ptr);
			free(scriptTable[i].ptr);
			scriptTable[i].ptr = NULL;
			scriptTable[i].size = 0;
		}
	}

	// This is copy protection. Used to hang the machine
	if (!scumm_stricmp(pPrcName, "L201.ANI")) {
		exitEngine = 1;
		return;
	}

	checkDataDisk(-1);
	if ((g_cine->getGameType() == Cine::GType_FW) &&
		(!scumm_stricmp(pPrcName, BOOT_PRC_NAME) || !scumm_stricmp(pPrcName, "demo.prc"))) {
		scriptPtr = dataPtr = readFile(pPrcName);
	} else {
		scriptPtr = dataPtr = readBundleFile(findFileInBundle(pPrcName));
	}

	assert(scriptPtr);

	setMouseCursor(MOUSE_CURSOR_DISK);

	numScripts = READ_BE_UINT16(scriptPtr);
	scriptPtr += 2;
	assert(numScripts <= NUM_MAX_SCRIPT);

	for (i = 0; i < numScripts; i++) {
		scriptTable[i].size = READ_BE_UINT16(scriptPtr); scriptPtr += 2;
	}

	for (i = 0; i < numScripts; i++) {
		uint16 size = scriptTable[i].size;
		if (size) {
			scriptTable[i].ptr = (byte *) malloc(size);
			assert(scriptTable[i].ptr);
			memcpy(scriptTable[i].ptr, scriptPtr, size);
			scriptPtr += size;
			computeScriptStack(scriptTable[i].ptr, scriptTable[i].stack, size);
		}
	}

	free(dataPtr);

#ifdef DUMP_SCRIPTS

	{
		uint16 s;
		char buffer[256];

		for (s = 0; s < numScripts; s++) {
			if (scriptTable[s].size) {
				sprintf(buffer, "%s_%03d.txt", pPrcName, s);

				decompileScript(scriptTable[s].ptr, scriptTable[s].stack, scriptTable[s].size, s);
				dumpScript(buffer);
			}
		}
	}
#endif
}

} // End of namespace Cine
