movements.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 TWINE_SCENE_MOVEMENTS_H
#define TWINE_SCENE_MOVEMENTS_H

#include "common/scummsys.h"
#include "twine/shared.h"

namespace TwinE {

class TwinEEngine;
class ActorStruct;
struct RealValue;

class Movements {
private:
    TwinEEngine *_engine;

    struct ChangedCursorKeys {
        uint8 forwardChange = 0;
        uint8 backwardChange = 0;
        uint8 leftChange = 0;
        uint8 rightChange = 0;
        uint8 forwardDown = 0;
        uint8 backwardDown = 0;
        uint8 leftDown = 0;
        uint8 rightDown = 0;

        void update(TwinEEngine *engine);

        inline bool operator==(const ChangedCursorKeys &rhs) const {
            return forwardChange == rhs.forwardChange && backwardChange == rhs.backwardChange && leftChange == rhs.leftChange && rightChange == rhs.rightChange;
        }

        inline operator bool() const {
            return forwardChange && backwardChange && leftChange && rightChange;
        }

        inline bool operator!=(const ChangedCursorKeys &rhs) const {
            return forwardChange != rhs.forwardChange || backwardChange != rhs.backwardChange || leftChange != rhs.leftChange || rightChange != rhs.rightChange;
        }
    };

    // enter, space, ...
    int16 _heroActionKey = 0;
    int32 _previousLoopActionKey = 0;
    // cursor keys
    ChangedCursorKeys _changedCursorKeys;
    ChangedCursorKeys _previousChangedCursorKeys;

    void processManualAction(int actorIdx);
    void processFollowAction(int actorIdx);
    void processRandomAction(int actorIdx);
    void processTrackAction(int actorIdx);
    void processSameXZAction(int actorIdx);

    void processBehaviourExecution(int actorIdx);
    bool processAttackExecution(int actorIdx);
    void processManualMovementExecution(int actorIdx);
    void processManualRotationExecution(int actorIdx);

    bool _actionNormal = false;
    void manualRealAngle(ActorStruct *actor);

public:
    Movements(TwinEEngine *engine);

    void setActionNormal(bool actionNormal);

    void update();

    bool actionNormal() const;

    bool _lastJoyFlag = false;

    int32 _targetActorDistance = 0;

    IVec3 getShadow(const IVec3 &pos);

    void initRealAngle(int16 startAngle, int16 endAngle, int16 stepAngle, RealValue *movePtr);

    void clearRealAngle(ActorStruct *actorPtr);

    void initRealValue(int16 startAngle, int16 endAngle, int16 stepAngle, RealValue *movePtr);

    int32 getAngle(int32 x1, int32 z1, int32 x2, int32 z2);

    inline int32 getAngle(const IVec3& v1, const IVec3 &v2) {
        return getAngle(v1.x, v1.z, v2.x, v2.z);
    }

    void initRealAngleConst(int32 start, int32 end, int32 duration, RealValue *movePtr) const;

    void doDir(int32 actorIdx);
};

inline void Movements::setActionNormal(bool actionNormal) {
    _actionNormal = actionNormal;
}

inline bool Movements::actionNormal() const {
    return _actionNormal;
}

} // namespace TwinE

#endif