File indexing completed on 2022-09-27 13:19:26

0001 /*
0002     SPDX-FileCopyrightText: 1998-2001 Andreas Zehender <az@azweb.de>
0003 
0004     SPDX-License-Identifier: GPL-2.0-or-later
0005 */
0006 
0007 #include "spritebase.h"
0008 
0009 #include <math.h>
0010 
0011 #include <QGraphicsScene>
0012 #include <QSvgRenderer>
0013 
0014 
0015 SimpleSprite::SimpleSprite(QSvgRenderer* svg, const QString& element)
0016       :QGraphicsSvgItem(nullptr)
0017 {
0018    setSharedRenderer(svg);
0019    setElementId(element);
0020    init();
0021 }
0022 
0023 void SimpleSprite::init()
0024 {
0025    m_width = boundingRect().width();
0026    m_height = boundingRect().height();
0027    m_center = QPointF(m_width/2.0f,m_height/2.0f);
0028 }
0029 
0030 int SimpleSprite::width()
0031 {
0032    return m_width;
0033 }
0034 
0035 int SimpleSprite::height()
0036 {
0037    return m_height;
0038 }
0039 
0040 QPointF SimpleSprite::center()
0041 {
0042    return m_center;
0043 }
0044 
0045 MobileSprite::MobileSprite(QSvgRenderer* svg, const QString& element, int pn)
0046       :SimpleSprite(svg, element)
0047 {
0048    stopped=false;
0049    playerNumber=pn;
0050 }
0051 
0052 void MobileSprite::forward(double mult, int fr)
0053 {
0054    Q_UNUSED(fr);
0055 
0056    if(!stopped)
0057    {
0058       QGraphicsSvgItem::moveBy(xVelocity()*mult,yVelocity()*mult);
0059       checkBounds();
0060       // FIXME
0061       //setFrame(fr);
0062    }
0063   // else
0064     //  setFrame(fr);
0065 }
0066 
0067 void MobileSprite::forward(double mult)
0068 {
0069    if(!stopped)
0070    {
0071       QGraphicsSvgItem::moveBy(xVelocity()*mult,yVelocity()*mult);
0072       checkBounds();
0073    }
0074 }
0075 
0076 void MobileSprite::checkBounds()
0077 {
0078    double cx, cy;
0079    int ch, cw;
0080 
0081    cx = x();
0082    cy = y();
0083    ch = (int)scene()->height();
0084    cw = (int)scene()->width();
0085 
0086    if ( (int)(cx+0.5) < 0 )
0087       cx = cw - 1 - fmod( -cx, cw );
0088    else if ( (int)(cx+0.5) > ( cw-1 ) )
0089       cx = fmod( cx-cw-1, cw );
0090    if ( (int)(cy+0.5) < 0 )
0091       cy = ch-1 - fmod( -cy, ch );
0092    else if ( (int)(cy+0.5) > ( ch-1 ) )
0093       cy = fmod( cy-ch-1, ch );
0094    if ( (cx != x()) || (cy != y()) )
0095    {
0096       // printf("%5.2f %5.2f %5.2f %5.2f\n", x(), y(), cx, cy);
0097       setPos(QPointF(cx, cy));
0098    }
0099 }
0100 
0101 void MobileSprite::calculateGravity(double gravity,double mult)
0102 {
0103    double abs_2,nx,ny,ex,ey,sq,eg;
0104 
0105    if(!stopped)
0106    {
0107       ex=x()-scene()->width()/2.0;
0108       ey=y()-scene()->height()/2.0;
0109 
0110       abs_2=ex*ex+ey*ey;
0111       sq=sqrt(abs_2);
0112 
0113       nx=ex/sq;
0114       ny=ey/sq;
0115       eg=gravity*mult;
0116       setVelocity(xVelocity()-eg*nx/abs_2,
0117                   yVelocity()-eg*ny/abs_2);
0118    }
0119 }
0120 
0121 int MobileSprite::spriteFieldWidth()
0122 {
0123     return (int)scene()->width();
0124 }
0125 
0126 int MobileSprite::spriteFieldHeight()
0127 {
0128     return (int)scene()->height();
0129 }
0130 
0131 void MobileSprite::setVelocity(double vx, double vy)
0132 {
0133     xvel = vx;
0134     yvel = vy;
0135 }
0136 
0137 AiSprite MobileSprite::toAiSprite()
0138 {
0139        // y direction: screen:       bottom to top
0140        //              mathematical: top to bottom
0141    AiSprite as;
0142    as.x=x()-scene()->width()/2.0;
0143    as.y=-(y()-scene()->height()/2.0);
0144    as.dx=xVelocity();
0145    as.dy=-yVelocity();
0146    as.sun=false;
0147    as.border=false;
0148    return as;
0149 }
0150 
0151 AnimatedSprite::AnimatedSprite(QSvgRenderer* svg,
0152                                const QList<QString> &animation,
0153                                int pn)
0154     : MobileSprite(svg,animation[0],pn)
0155 {
0156     frames = animation;
0157     currentFrame = 0;
0158 }
0159 
0160 void AnimatedSprite::setFrame(int frame)
0161 {
0162     if (!frames.isEmpty()) {
0163         currentFrame = frame % frames.size();
0164         setElementId(frames.at(currentFrame));
0165     }
0166 }
0167 
0168 void AnimatedSprite::advance(int phase)
0169 {
0170     if (phase == 1 && !frames.isEmpty()) {
0171         currentFrame = (currentFrame + 1) % frames.size();
0172         setElementId(frames.at(currentFrame));
0173         init();
0174     }
0175 }
0176 
0177 QPainterPath AnimatedSprite::shape() const
0178 {
0179     QPainterPath path;
0180     path.addRect(0, 0,
0181                  boundingRect().width(),
0182                  boundingRect().height());
0183     return path;
0184 }
0185 
0186 void AnimatedSprite::setAnimation(const QList<QString> &animation)
0187 {
0188     frames = animation;
0189     setFrame(0);
0190 }