scumm_v0.h

/* 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/>.
 *
 */

#ifndef SCUMM_SCRIPT_V0_H
#define SCUMM_SCRIPT_V0_H

#include "scumm/scumm_v2.h"

namespace Scumm {

class ScummEngine_v0 : public ScummEngine_v2 {
protected:
    enum CurrentMode {
        kModeCutscene = 0,   // cutscene active
        kModeKeypad = 1,     // kid selection / dial pad / save-load dialog
        kModeNoNewKid = 2,   // verb "new kid" disabled (e.g. when entering lab)
        kModeNormal = 3      // normal playing mode
    };

    enum WalkToObjectState {
        kWalkToObjectStateDone = 0,
        kWalkToObjectStateWalk = 1,
        kWalkToObjectStateTurn = 2
    };

protected:
    bool _drawDemo;
    byte _currentMode;
    byte _currentLights;

    int _activeVerb;        // selected verb
    int _activeObject;      // 1st selected object (see OBJECT_V0())
    int _activeObject2;     // 2nd selected object or actor (see OBJECT_V0())

    int _cmdVerb;           // script verb
    int _cmdObject;         // 1st script object (see OBJECT_V0())
    int _cmdObject2;        // 2nd script object or actor (see OBJECT_V0())
    int _sentenceNestedCount;

    int _walkToObject;
    int _walkToObjectState;
    bool _redrawSentenceLine;

public:
    ScummEngine_v0(OSystem *syst, const DetectorResult &dr);

    void resetScumm() override;

    byte walkboxFindTarget(Actor *a, int destbox, Common::Point walkdest);

    /* Delay calculation */
    void DelayReset();
    int DelayCalculateDelta();

protected:
    void resetRoomObject(ObjectData *od, const byte *room, const byte *searchptr = NULL) override;

    void setupOpcodes() override;

    void setupScummVars() override;
    void resetScummVars() override;
    void scummLoop(int delta) override;
    void decodeParseString() override;

    void processInput() override;

    void saveLoadWithSerializer(Common::Serializer &s) override;
    void terminateSaveMenuScript() override;

    bool objIsActor(int obj) override;
    int objToActor(int obj) override;
    int actorToObj(int actor) override;

    // V0 MM Verb commands
    int getVerbPrepId();
    int activeVerbPrep();
    void walkToActorOrObject(int object);
    void verbExec();

    virtual void runSentenceScript();
    void checkAndRunSentenceScript() override;
    bool checkPendingWalkAction();
    bool checkSentenceComplete();
    void checkExecVerbs() override;
    void handleMouseOver(bool updateInventory) override;
    int verbPrepIdType(int verbid);
    void resetVerbs();
    void verbDemoMode();
    void verbDrawDemoString(int VerbDemoNumber);

    void clearSentenceLine();
    void flushSentenceLine();
    void drawSentenceObject(int object);
    void drawSentenceLine();

    void setMode(byte mode);

    void switchActor(int slot);

    int getVarOrDirectWord(byte mask) override;
    uint fetchScriptWord() override;

    int getActiveObject() override;

    void resetSentence() override;

    bool areBoxesNeighbors(int box1nr, int box2nr) override;

    bool ifEqualActiveObject2Common(bool checkType);

    int getCurrentLights() const override;

    /* Version 0 script opcodes */
    void o_stopCurrentScript();
    void o_walkActorToObject();
    void o_loadSound();
    void o_getActorMoving();
    void o_animateActor();
    void o_putActorAtObject();
    void o_pickupObject();
    void o_setObjectName();
    void o_lockSound();
    void o_lockCostume();
    void o_loadCostume();
    void o_loadRoom();
    void o_loadRoomWithEgo();
    void o_lockScript();
    void o_loadScript();
    void o_lockRoom();
    void o_setMode();
    void o_lights();
    void o_unlockCostume();
    void o_unlockScript();
    void o_nop();
    void o_getObjectOwner();
    void o_getActorBitVar();
    void o_setActorBitVar();
    void o_getBitVar();
    void o_setBitVar();
    void o_doSentence();
    void o_ifEqualActiveObject2();
    void o_ifNotEqualActiveObject2();
    void o_getClosestActor();
    void o_printEgo();
    void o_print();
    void o_unlockRoom();
    void o_unlockSound();
    void o_cutscene();
    void o_endCutscene();
    void o_setOwnerOf();
    void o_screenPrepare();

    byte VAR_ACTIVE_OBJECT2;
    byte VAR_IS_SOUND_RUNNING;
    byte VAR_ACTIVE_VERB;
};


} // End of namespace Scumm

#endif