part_emitter.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/>.
 *
 */

/*
 * This file is based on WME Lite.
 * http://dead-code.org/redir.php?target=wmelite
 * Copyright (c) 2011 Jan Nedoma
 */

#ifndef WINTERMUTE_PARTEMITTER_H
#define WINTERMUTE_PARTEMITTER_H


#include "engines/wintermute/base/base_object.h"
#include "engines/wintermute/base/particles/part_force.h"

namespace Wintermute {
class BaseRegion;
class PartParticle;
class PartEmitter : public BaseObject {
public:
    DECLARE_PERSISTENT(PartEmitter, BaseObject)

    PartEmitter(BaseGame *inGame, BaseScriptHolder *Owner);
    ~PartEmitter() override;

    int32 _width;
    int32 _height;

    int32 _angle1;
    int32 _angle2;

    float _rotation1;
    float _rotation2;

    float _angVelocity1;
    float _angVelocity2;

    float _growthRate1;
    float _growthRate2;
    bool _exponentialGrowth;

    float _velocity1;
    float _velocity2;
    bool _velocityZBased;

    float _scale1;
    float _scale2;
    bool _scaleZBased;

    int32 _maxParticles;

    int32 _lifeTime1;
    int32 _lifeTime2;
    bool _lifeTimeZBased;

    int32 _genInterval;
    int32 _genAmount;

    bool _running;
    int32 _overheadTime;

    int32 _maxBatches;
    int32 _batchesGenerated;

    Common::Rect32 _border;
    int32 _borderThicknessLeft;
    int32 _borderThicknessRight;
    int32 _borderThicknessTop;
    int32 _borderThicknessBottom;

    int32 _fadeInTime;
    int32 _fadeOutTime;

    int32 _alpha1;
    int32 _alpha2;
    bool _alphaTimeBased;

    bool _useRegion;

    char *_emitEvent;
    BaseScriptHolder *_owner;

    bool start();

    bool update() override;
    bool display() override { return display(nullptr); } // To avoid shadowing the inherited display-function.
    bool display(BaseRegion *region);

    bool sortParticlesByZ();
    bool addSprite(const char *filename);
    bool removeSprite(const char *filename);
    bool setBorder(int x, int y, int width, int height);
    bool setBorderThickness(int thicknessLeft, int thicknessRight, int thicknessTop, int thicknessBottom);

    bool addForce(const Common::String &name, PartForce::TForceType type, int posX, int posY, float angle, float strength);
    bool removeForce(const Common::String &name);

    BaseArray<PartForce *> _forces;

    // scripting interface
    ScValue *scGetProperty(const Common::String &name) override;
    bool scSetProperty(const char *name, ScValue *value) override;
    bool scCallMethod(ScScript *script, ScStack *stack, ScStack *thisStack, const char *name) override;
    const char *scToString() override;

private:
    PartForce *addForceByName(const Common::String &name);
    int static compareZ(const void *obj1, const void *obj2);
    bool initParticle(PartParticle *particle, uint32 currentTime, uint32 timerDelta);
    bool updateInternal(uint32 currentTime, uint32 timerDelta);
    uint32 _lastGenTime;
    BaseArray<PartParticle *> _particles;
    BaseArray<char *> _sprites;
};

} // End of namespace Wintermute

#endif