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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the examples of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 /* |
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43 * KAsteroids - Copyright (c) Martin R. Jones 1997 |
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44 * |
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45 * Part of the KDE project |
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46 */ |
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47 |
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48 #include <stdlib.h> |
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49 #include <math.h> |
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50 #include <qapplication.h> |
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51 #include <qnamespace.h> |
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52 #include <q3accel.h> |
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53 #include <qmessagebox.h> |
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54 #include <q3scrollview.h> |
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55 #include <qdir.h> |
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56 #include <QGraphicsItem> |
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57 //Added by qt3to4: |
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58 #include <QTimerEvent> |
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59 #include <QPixmap> |
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60 #include <QResizeEvent> |
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61 #include <QShowEvent> |
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62 |
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63 #include "view.h" |
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64 |
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65 #define IMG_BACKGROUND ":/trolltech/examples/graphicsview/portedasteroids/bg.png" |
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66 |
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67 #define REFRESH_DELAY 33 |
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68 #define SHIP_SPEED 0.3 |
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69 #define MISSILE_SPEED 10.0 |
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70 #define SHIP_STEPS 64 |
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71 #define ROTATE_RATE 2 |
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72 #define SHIELD_ON_COST 1 |
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73 #define SHIELD_HIT_COST 30 |
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74 #define BRAKE_ON_COST 4 |
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75 |
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76 #define MAX_ROCK_SPEED 2.5 |
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77 #define MAX_POWERUP_SPEED 1.5 |
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78 #define MAX_SHIP_SPEED 12 |
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79 #define MAX_BRAKES 5 |
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80 #define MAX_SHIELDS 5 |
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81 #define MAX_FIREPOWER 5 |
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82 |
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83 #define TEXT_SPEED 4 |
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84 |
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85 #define PI_X_2 6.283185307 |
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86 #ifndef M_PI |
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87 #define M_PI 3.141592654 |
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88 #endif |
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89 |
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90 static struct |
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91 { |
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92 int id; |
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93 const char *path; |
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94 int frames; |
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95 } |
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96 kas_animations [] = |
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97 { |
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98 { ID_ROCK_LARGE, "rock1/rock1%1.png", 32 }, |
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99 { ID_ROCK_MEDIUM, "rock2/rock2%1.png", 32 }, |
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100 { ID_ROCK_SMALL, "rock3/rock3%1.png", 32 }, |
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101 { ID_SHIP, "ship/ship%1.png", 32 }, |
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102 { ID_MISSILE, "missile/missile.png", 1 }, |
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103 { ID_BIT, "bits/bits%1.png", 16 }, |
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104 { ID_EXHAUST, "exhaust/exhaust.png", 1 }, |
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105 { ID_ENERGY_POWERUP, "powerups/energy.png", 1 }, |
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106 // { ID_TELEPORT_POWERUP, "powerups/teleport%1.png", 12 }, |
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107 { ID_BRAKE_POWERUP, "powerups/brake.png", 1 }, |
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108 { ID_SHIELD_POWERUP, "powerups/shield.png", 1 }, |
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109 { ID_SHOOT_POWERUP, "powerups/shoot.png", 1 }, |
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110 { ID_SHIELD, "shield/shield%1.png", 6 }, |
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111 { 0, 0, 0 } |
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112 }; |
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113 |
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114 KAsteroidsView::KAsteroidsView( QWidget *parent, const char *name ) |
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115 : QWidget( parent, name ), |
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116 field(0, 0, 640, 440), |
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117 view(&field,this) |
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118 { |
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119 view.setVerticalScrollBarPolicy( Qt::ScrollBarAlwaysOff ); |
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120 view.setHorizontalScrollBarPolicy( Qt::ScrollBarAlwaysOff ); |
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121 view.setCacheMode(QGraphicsView::CacheBackground); |
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122 view.setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate); |
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123 view.setOptimizationFlags(QGraphicsView::DontClipPainter |
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124 | QGraphicsView::DontSavePainterState |
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125 | QGraphicsView::DontAdjustForAntialiasing); |
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126 view.viewport()->setFocusProxy( this ); |
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127 rocks.setAutoDelete( TRUE ); |
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128 missiles.setAutoDelete( TRUE ); |
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129 bits.setAutoDelete( TRUE ); |
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130 powerups.setAutoDelete( TRUE ); |
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131 exhaust.setAutoDelete( TRUE ); |
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132 |
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133 QPixmap pm( IMG_BACKGROUND ); |
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134 field.setBackgroundBrush( pm ); |
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135 |
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136 textSprite = new QGraphicsTextItem( 0, &field ); |
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137 QFont font( "helvetica", 18 ); |
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138 textSprite->setFont( font ); |
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139 textSprite->setCacheMode(QGraphicsItem::DeviceCoordinateCache); |
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140 |
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141 shield = 0; |
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142 shieldOn = FALSE; |
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143 refreshRate = REFRESH_DELAY; |
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144 |
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145 initialized = readSprites(); |
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146 |
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147 shieldTimer = new QTimer( this ); |
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148 connect( shieldTimer, SIGNAL(timeout()), this, SLOT(hideShield()) ); |
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149 mTimerId = -1; |
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150 |
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151 shipPower = MAX_POWER_LEVEL; |
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152 vitalsChanged = TRUE; |
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153 can_destroy_powerups = FALSE; |
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154 |
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155 mPaused = TRUE; |
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156 |
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157 if ( !initialized ) { |
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158 textSprite->setHtml( tr("<font color=red>Error: Cannot read sprite images</font>") ); |
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159 textSprite->setPos( (field.width()-textSprite->boundingRect().width()) / 2, |
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160 (field.height()-textSprite->boundingRect().height()) / 2 ); |
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161 } |
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162 } |
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163 |
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164 // - - - |
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165 |
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166 KAsteroidsView::~KAsteroidsView() |
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167 { |
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168 } |
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169 |
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170 // - - - |
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171 |
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172 void KAsteroidsView::reset() |
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173 { |
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174 if ( !initialized ) |
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175 return; |
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176 rocks.clear(); |
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177 missiles.clear(); |
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178 bits.clear(); |
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179 powerups.clear(); |
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180 exhaust.clear(); |
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181 |
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182 shotsFired = 0; |
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183 shotsHit = 0; |
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184 |
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185 rockSpeed = 1.0; |
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186 powerupSpeed = 1.0; |
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187 mFrameNum = 0; |
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188 mPaused = FALSE; |
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189 |
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190 ship->hide(); |
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191 shield->hide(); |
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192 /* |
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193 if ( mTimerId >= 0 ) { |
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194 killTimer( mTimerId ); |
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195 mTimerId = -1; |
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196 } |
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197 */ |
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198 } |
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199 |
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200 // - -- |
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201 |
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202 void KAsteroidsView::newGame() |
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203 { |
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204 if ( !initialized ) |
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205 return; |
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206 if ( shieldOn ) |
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207 { |
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208 shield->hide(); |
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209 shieldOn = FALSE; |
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210 } |
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211 reset(); |
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212 if ( mTimerId < 0 ) |
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213 mTimerId = startTimer( REFRESH_DELAY ); |
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214 emit updateVitals(); |
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215 } |
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216 |
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217 // - - - |
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218 |
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219 void KAsteroidsView::endGame() |
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220 { |
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221 } |
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222 |
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223 void KAsteroidsView::pause( bool p ) |
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224 { |
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225 if ( !initialized ) |
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226 return; |
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227 if ( !mPaused && p ) { |
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228 if ( mTimerId >= 0 ) { |
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229 killTimer( mTimerId ); |
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230 mTimerId = -1; |
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231 } |
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232 } else if ( mPaused && !p ) |
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233 mTimerId = startTimer( REFRESH_DELAY ); |
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234 mPaused = p; |
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235 } |
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236 |
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237 // - - - |
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238 |
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239 void KAsteroidsView::newShip() |
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240 { |
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241 if ( !initialized ) |
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242 return; |
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243 ship->setPos( width()/2, height()/2 ); |
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244 ship->setFrame( 0 ); |
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245 shield->setPos( width()/2, height()/2 ); |
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246 shield->setFrame( 0 ); |
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247 ship->setVelocity( 0.0, 0.0 ); |
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248 shipDx = 0; |
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249 shipDy = 0; |
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250 shipAngle = 0; |
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251 rotateL = FALSE; |
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252 rotateR = FALSE; |
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253 thrustShip = FALSE; |
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254 shootShip = FALSE; |
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255 brakeShip = FALSE; |
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256 teleportShip = FALSE; |
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257 shieldOn = TRUE; |
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258 shootDelay = 0; |
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259 shipPower = MAX_POWER_LEVEL; |
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260 rotateRate = ROTATE_RATE; |
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261 rotateSlow = 0; |
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262 |
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263 mBrakeCount = 0; |
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264 mTeleportCount = 0; |
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265 mShootCount = 0; |
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266 |
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267 ship->show(); |
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268 shield->show(); |
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269 mShieldCount = 1; // just in case the ship appears on a rock. |
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270 shieldTimer->start( 1000, TRUE ); |
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271 } |
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272 |
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273 void KAsteroidsView::setShield( bool s ) |
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274 { |
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275 if ( !initialized ) |
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276 return; |
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277 if ( shieldTimer->isActive() && !s ) { |
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278 shieldTimer->stop(); |
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279 hideShield(); |
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280 } else { |
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281 shieldOn = s && mShieldCount; |
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282 } |
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283 } |
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284 |
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285 void KAsteroidsView::brake( bool b ) |
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286 { |
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287 if ( !initialized ) |
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288 return; |
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289 if ( mBrakeCount ) |
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290 { |
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291 if ( brakeShip && !b ) |
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292 { |
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293 rotateL = FALSE; |
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294 rotateR = FALSE; |
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295 thrustShip = FALSE; |
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296 rotateRate = ROTATE_RATE; |
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297 } |
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298 |
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299 brakeShip = b; |
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300 } |
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301 } |
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302 |
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303 // - - - |
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304 |
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305 bool KAsteroidsView::readSprites() |
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306 { |
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307 QString sprites_prefix = ":/trolltech/examples/graphicsview/portedasteroids/sprites/"; |
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308 |
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309 int i = 0; |
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310 while ( kas_animations[i].id ) |
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311 { |
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312 QList<QPixmap> anim; |
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313 QString wildcard = sprites_prefix + kas_animations[i].path; |
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314 wildcard.replace("%1", "*"); |
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315 QFileInfo fi(wildcard); |
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316 foreach (QString entry, QDir(fi.path(), fi.fileName()).entryList()) |
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317 anim << QPixmap(fi.path() + "/" + entry); |
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318 animation.insert( kas_animations[i].id, anim ); |
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319 i++; |
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320 } |
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321 |
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322 ship = new AnimatedPixmapItem( animation[ID_SHIP], &field ); |
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323 ship->hide(); |
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324 |
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325 shield = new KShield( animation[ID_SHIELD], &field ); |
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326 shield->hide(); |
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327 |
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328 return (!ship->image(0).isNull() && !shield->image(0).isNull()); |
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329 } |
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330 |
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331 // - - - |
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332 |
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333 void KAsteroidsView::addRocks( int num ) |
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334 { |
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335 if ( !initialized ) |
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336 return; |
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337 for ( int i = 0; i < num; i++ ) |
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338 { |
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339 KRock *rock = new KRock( animation[ID_ROCK_LARGE], &field, |
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340 ID_ROCK_LARGE, randInt(2), randInt(2) ? -1 : 1 ); |
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341 double dx = (2.0 - randDouble()*4.0) * rockSpeed; |
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342 double dy = (2.0 - randDouble()*4.0) * rockSpeed; |
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343 rock->setVelocity( dx, dy ); |
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344 rock->setFrame( randInt( rock->frameCount() ) ); |
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345 if ( dx > 0 ) |
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346 { |
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347 if ( dy > 0 ) |
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348 rock->setPos( 5, 5 ); |
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349 else |
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350 rock->setPos( 5, field.height() - 25 ); |
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351 rock->setFrame( 0 ); |
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352 } |
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353 else |
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354 { |
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355 if ( dy > 0 ) |
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356 rock->setPos( field.width() - 25, 5 ); |
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357 else |
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358 rock->setPos( field.width() - 25, field.height() - 25 ); |
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359 rock->setFrame( 0 ); |
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360 } |
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361 rock->show(); |
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362 rocks.append( rock ); |
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363 } |
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364 } |
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365 |
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366 // - - - |
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367 |
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368 void KAsteroidsView::showText( const QString &text, const QColor &color, bool scroll ) |
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369 { |
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370 if ( !initialized ) |
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371 return; |
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372 textSprite->setHtml( QString("<font color=#%1%2%3>%4</font>") |
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373 .arg(color.red(), 2, 16, QLatin1Char('0')) |
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374 .arg(color.green(), 2, 16, QLatin1Char('0')) |
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375 .arg(color.blue(), 2, 16, QLatin1Char('0')) |
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376 .arg(text) ); |
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377 Q_UNUSED(color); |
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378 // ### Porting: no such thing textSprite->setColor( color ); |
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379 |
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380 if ( scroll ) { |
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381 textSprite->setPos( (field.width()-textSprite->boundingRect().width()) / 2, |
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382 -textSprite->boundingRect().height() ); |
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383 textDy = TEXT_SPEED; |
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384 } else { |
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385 textSprite->setPos( (field.width()-textSprite->boundingRect().width()) / 2, |
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386 (field.height()-textSprite->boundingRect().height()) / 2 ); |
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387 textDy = 0; |
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388 } |
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389 textSprite->show(); |
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390 } |
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391 |
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392 // - - - |
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393 |
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394 void KAsteroidsView::hideText() |
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395 { |
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396 textDy = -TEXT_SPEED; |
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397 } |
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398 |
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399 // - - - |
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400 |
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401 void KAsteroidsView::resizeEvent(QResizeEvent* event) |
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402 { |
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403 QWidget::resizeEvent(event); |
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404 field.setSceneRect(0, 0, width()-4, height()-4); |
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405 view.resize(width(),height()); |
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406 } |
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407 |
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408 // - - - |
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409 |
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410 void KAsteroidsView::timerEvent( QTimerEvent * ) |
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411 { |
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412 field.advance(); |
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413 |
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414 AnimatedPixmapItem *rock; |
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415 |
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416 // move rocks forward |
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417 for ( rock = rocks.first(); rock; rock = rocks.next() ) { |
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418 ((KRock *)rock)->nextFrame(); |
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419 wrapSprite( rock ); |
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420 } |
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421 |
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422 wrapSprite( ship ); |
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423 |
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424 // check for missile collision with rocks. |
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425 processMissiles(); |
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426 |
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427 // these are generated when a ship explodes |
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428 for ( KBit *bit = bits.first(); bit; bit = bits.next() ) |
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429 { |
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430 if ( bit->expired() ) |
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431 { |
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432 bits.removeRef( bit ); |
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433 } |
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434 else |
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435 { |
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436 bit->growOlder(); |
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437 bit->setFrame( ( bit->frame()+1 ) % bit->frameCount() ); |
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438 } |
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439 } |
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440 |
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441 for ( KExhaust *e = exhaust.first(); e; e = exhaust.next() ) |
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442 exhaust.removeRef( e ); |
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443 |
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444 // move / rotate ship. |
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445 // check for collision with a rock. |
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446 processShip(); |
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447 |
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448 // move powerups and check for collision with player and missiles |
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449 processPowerups(); |
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450 |
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451 if ( textSprite->isVisible() ) |
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452 { |
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453 if ( textDy < 0 && |
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454 textSprite->boundingRect().y() <= -textSprite->boundingRect().height() ) { |
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455 textSprite->hide(); |
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456 } else { |
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457 textSprite->moveBy( 0, textDy ); |
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458 } |
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459 |
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460 if ( textSprite->sceneBoundingRect().y() > (field.height()-textSprite->boundingRect().height())/2 ) |
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461 textDy = 0; |
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462 } |
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463 |
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464 if ( vitalsChanged && !(mFrameNum % 10) ) { |
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465 emit updateVitals(); |
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466 vitalsChanged = FALSE; |
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467 } |
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468 |
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469 mFrameNum++; |
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470 } |
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471 |
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472 void KAsteroidsView::wrapSprite( QGraphicsItem *s ) |
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473 { |
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474 int x = int(s->x() + s->boundingRect().width() / 2); |
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475 int y = int(s->y() + s->boundingRect().height() / 2); |
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476 |
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477 if ( x > field.width() ) |
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478 s->setPos( s->x() - field.width(), s->y() ); |
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479 else if ( x < 0 ) |
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480 s->setPos( field.width() + s->x(), s->y() ); |
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481 |
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482 if ( y > field.height() ) |
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483 s->setPos( s->x(), s->y() - field.height() ); |
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484 else if ( y < 0 ) |
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485 s->setPos( s->x(), field.height() + s->y() ); |
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486 } |
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487 |
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488 // - - - |
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489 |
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490 void KAsteroidsView::rockHit( AnimatedPixmapItem *hit ) |
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491 { |
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492 KPowerup *nPup = 0; |
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493 int rnd = int(randDouble()*30.0) % 30; |
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494 switch( rnd ) |
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495 { |
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496 case 4: |
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497 case 5: |
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498 nPup = new KPowerup( animation[ID_ENERGY_POWERUP], &field, |
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499 ID_ENERGY_POWERUP ); |
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500 break; |
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501 case 10: |
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502 // nPup = new KPowerup( animation[ID_TELEPORT_POWERUP], &field, |
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503 // ID_TELEPORT_POWERUP ); |
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504 break; |
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505 case 15: |
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506 nPup = new KPowerup( animation[ID_BRAKE_POWERUP], &field, |
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507 ID_BRAKE_POWERUP ); |
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508 break; |
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509 case 20: |
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510 nPup = new KPowerup( animation[ID_SHIELD_POWERUP], &field, |
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511 ID_SHIELD_POWERUP ); |
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512 break; |
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513 case 24: |
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514 case 25: |
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515 nPup = new KPowerup( animation[ID_SHOOT_POWERUP], &field, |
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516 ID_SHOOT_POWERUP ); |
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517 break; |
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518 } |
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519 if ( nPup ) |
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520 { |
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521 double r = 0.5 - randDouble(); |
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522 nPup->setPos( hit->x(), hit->y() ); |
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523 nPup->setFrame( 0 ); |
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524 nPup->setVelocity( hit->xVelocity() + r, hit->yVelocity() + r ); |
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525 powerups.append( nPup ); |
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526 } |
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527 |
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528 if ( hit->type() == ID_ROCK_LARGE || hit->type() == ID_ROCK_MEDIUM ) |
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529 { |
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530 // break into smaller rocks |
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531 double addx[4] = { 1.0, 1.0, -1.0, -1.0 }; |
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532 double addy[4] = { -1.0, 1.0, -1.0, 1.0 }; |
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533 |
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534 double dx = hit->xVelocity(); |
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535 double dy = hit->yVelocity(); |
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536 |
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537 double maxRockSpeed = MAX_ROCK_SPEED * rockSpeed; |
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538 if ( dx > maxRockSpeed ) |
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539 dx = maxRockSpeed; |
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540 else if ( dx < -maxRockSpeed ) |
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541 dx = -maxRockSpeed; |
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542 if ( dy > maxRockSpeed ) |
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543 dy = maxRockSpeed; |
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544 else if ( dy < -maxRockSpeed ) |
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545 dy = -maxRockSpeed; |
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546 |
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547 AnimatedPixmapItem *nrock; |
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548 |
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549 for ( int i = 0; i < 4; i++ ) |
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550 { |
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551 double r = rockSpeed/2 - randDouble()*rockSpeed; |
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552 if ( hit->type() == ID_ROCK_LARGE ) |
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553 { |
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554 nrock = new KRock( animation[ID_ROCK_MEDIUM], &field, |
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555 ID_ROCK_MEDIUM, randInt(2), randInt(2) ? -1 : 1 ); |
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556 emit rockHit( 0 ); |
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557 } |
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558 else |
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559 { |
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560 nrock = new KRock( animation[ID_ROCK_SMALL], &field, |
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561 ID_ROCK_SMALL, randInt(2), randInt(2) ? -1 : 1 ); |
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562 emit rockHit( 1 ); |
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563 } |
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564 |
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565 nrock->setPos( hit->x(), hit->y() ); |
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566 nrock->setFrame( 0 ); |
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567 nrock->setVelocity( dx+addx[i]*rockSpeed+r, dy+addy[i]*rockSpeed+r ); |
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568 nrock->setFrame( randInt( nrock->frameCount() ) ); |
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569 rocks.append( nrock ); |
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570 } |
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571 } |
|
572 else if ( hit->type() == ID_ROCK_SMALL ) |
|
573 emit rockHit( 2 ); |
|
574 rocks.removeRef( hit ); |
|
575 if ( rocks.count() == 0 ) |
|
576 emit rocksRemoved(); |
|
577 } |
|
578 |
|
579 void KAsteroidsView::reducePower( int val ) |
|
580 { |
|
581 shipPower -= val; |
|
582 if ( shipPower <= 0 ) |
|
583 { |
|
584 shipPower = 0; |
|
585 thrustShip = FALSE; |
|
586 if ( shieldOn ) |
|
587 { |
|
588 shieldOn = FALSE; |
|
589 shield->hide(); |
|
590 } |
|
591 } |
|
592 vitalsChanged = TRUE; |
|
593 } |
|
594 |
|
595 void KAsteroidsView::addExhaust( double x, double y, double dx, |
|
596 double dy, int count ) |
|
597 { |
|
598 for ( int i = 0; i < count; i++ ) |
|
599 { |
|
600 KExhaust *e = new KExhaust( animation[ID_EXHAUST], &field ); |
|
601 e->setPos( x + 2 - randDouble()*4, y + 2 - randDouble()*4 ); |
|
602 e->setVelocity( dx, dy ); |
|
603 exhaust.append( e ); |
|
604 } |
|
605 } |
|
606 |
|
607 void KAsteroidsView::processMissiles() |
|
608 { |
|
609 KMissile *missile; |
|
610 |
|
611 // if a missile has hit a rock, remove missile and break rock into smaller |
|
612 // rocks or remove completely. |
|
613 Q3PtrListIterator<KMissile> it(missiles); |
|
614 |
|
615 for ( ; it.current(); ++it ) |
|
616 { |
|
617 missile = it.current(); |
|
618 missile->growOlder(); |
|
619 |
|
620 if ( missile->expired() ) |
|
621 { |
|
622 missiles.removeRef( missile ); |
|
623 continue; |
|
624 } |
|
625 |
|
626 wrapSprite( missile ); |
|
627 |
|
628 QList<QGraphicsItem *> hits = missile->collidingItems(Qt::IntersectsItemBoundingRect); |
|
629 QList<QGraphicsItem *>::Iterator hit; |
|
630 for ( hit = hits.begin(); hit != hits.end(); ++hit ) |
|
631 { |
|
632 if ( (*hit)->type() >= ID_ROCK_LARGE && |
|
633 (*hit)->type() <= ID_ROCK_SMALL && (*hit)->collidesWithItem(missile) ) |
|
634 { |
|
635 shotsHit++; |
|
636 rockHit( static_cast<AnimatedPixmapItem *>(*hit) ); |
|
637 missiles.removeRef( missile ); |
|
638 break; |
|
639 } |
|
640 } |
|
641 } |
|
642 } |
|
643 |
|
644 // - - - |
|
645 |
|
646 void KAsteroidsView::processShip() |
|
647 { |
|
648 if ( ship->isVisible() ) |
|
649 { |
|
650 if ( shieldOn ) |
|
651 { |
|
652 shield->show(); |
|
653 reducePower( SHIELD_ON_COST ); |
|
654 static int sf = 0; |
|
655 sf++; |
|
656 |
|
657 if ( sf % 2 ) |
|
658 shield->setFrame( (shield->frame()+1) % shield->frameCount() ); |
|
659 shield->setPos( ship->x() - 9, ship->y() - 9 ); |
|
660 |
|
661 QList<QGraphicsItem *> hits = shield->collidingItems(Qt::IntersectsItemBoundingRect); |
|
662 QList<QGraphicsItem *>::Iterator it; |
|
663 for ( it = hits.begin(); it != hits.end(); ++it ) |
|
664 { |
|
665 if ( (*it)->type() >= ID_ROCK_LARGE && |
|
666 (*it)->type() <= ID_ROCK_SMALL && (*it)->collidesWithItem(shield) ) |
|
667 { |
|
668 int factor; |
|
669 switch ( (*it)->type() ) |
|
670 { |
|
671 case ID_ROCK_LARGE: |
|
672 factor = 3; |
|
673 break; |
|
674 |
|
675 case ID_ROCK_MEDIUM: |
|
676 factor = 2; |
|
677 break; |
|
678 |
|
679 default: |
|
680 factor = 1; |
|
681 } |
|
682 |
|
683 if ( factor > mShieldCount ) |
|
684 { |
|
685 // shield not strong enough |
|
686 shieldOn = FALSE; |
|
687 break; |
|
688 } |
|
689 rockHit( static_cast<AnimatedPixmapItem *>(*it) ); |
|
690 // the more shields we have the less costly |
|
691 reducePower( factor * (SHIELD_HIT_COST - mShieldCount*2) ); |
|
692 } |
|
693 } |
|
694 } |
|
695 |
|
696 if ( !shieldOn ) |
|
697 { |
|
698 shield->hide(); |
|
699 QList<QGraphicsItem *> hits = ship->collidingItems(Qt::IntersectsItemBoundingRect); |
|
700 QList<QGraphicsItem *>::Iterator it; |
|
701 for ( it = hits.begin(); it != hits.end(); ++it ) |
|
702 { |
|
703 if ( (*it)->type() >= ID_ROCK_LARGE && |
|
704 (*it)->type() <= ID_ROCK_SMALL && (*it)->collidesWithItem(ship)) |
|
705 { |
|
706 KBit *bit; |
|
707 for ( int i = 0; i < 12; i++ ) |
|
708 { |
|
709 bit = new KBit( animation[ID_BIT], &field ); |
|
710 bit->setPos( ship->x() + 5 - randDouble() * 10, |
|
711 ship->y() + 5 - randDouble() * 10 ); |
|
712 bit->setFrame( randInt(bit->frameCount()) ); |
|
713 bit->setVelocity( 1-randDouble()*2, |
|
714 1-randDouble()*2 ); |
|
715 bit->setDeath( 60 + randInt(60) ); |
|
716 bits.append( bit ); |
|
717 } |
|
718 ship->hide(); |
|
719 shield->hide(); |
|
720 emit shipKilled(); |
|
721 break; |
|
722 } |
|
723 } |
|
724 } |
|
725 |
|
726 |
|
727 if ( rotateSlow ) |
|
728 rotateSlow--; |
|
729 |
|
730 if ( rotateL ) |
|
731 { |
|
732 shipAngle -= rotateSlow ? 1 : rotateRate; |
|
733 if ( shipAngle < 0 ) |
|
734 shipAngle += SHIP_STEPS; |
|
735 } |
|
736 |
|
737 if ( rotateR ) |
|
738 { |
|
739 shipAngle += rotateSlow ? 1 : rotateRate; |
|
740 if ( shipAngle >= SHIP_STEPS ) |
|
741 shipAngle -= SHIP_STEPS; |
|
742 } |
|
743 |
|
744 double angle = shipAngle * PI_X_2 / SHIP_STEPS; |
|
745 double cosangle = cos( angle ); |
|
746 double sinangle = sin( angle ); |
|
747 |
|
748 if ( brakeShip ) |
|
749 { |
|
750 thrustShip = FALSE; |
|
751 rotateL = FALSE; |
|
752 rotateR = FALSE; |
|
753 rotateRate = ROTATE_RATE; |
|
754 if ( fabs(shipDx) < 2.5 && fabs(shipDy) < 2.5 ) |
|
755 { |
|
756 shipDx = 0.0; |
|
757 shipDy = 0.0; |
|
758 ship->setVelocity( shipDx, shipDy ); |
|
759 brakeShip = FALSE; |
|
760 } |
|
761 else |
|
762 { |
|
763 double motionAngle = atan2( -shipDy, -shipDx ); |
|
764 if ( angle > M_PI ) |
|
765 angle -= PI_X_2; |
|
766 double angleDiff = angle - motionAngle; |
|
767 if ( angleDiff > M_PI ) |
|
768 angleDiff = PI_X_2 - angleDiff; |
|
769 else if ( angleDiff < -M_PI ) |
|
770 angleDiff = PI_X_2 + angleDiff; |
|
771 double fdiff = fabs( angleDiff ); |
|
772 if ( fdiff > 0.08 ) |
|
773 { |
|
774 if ( angleDiff > 0 ) |
|
775 rotateL = TRUE; |
|
776 else if ( angleDiff < 0 ) |
|
777 rotateR = TRUE; |
|
778 if ( fdiff > 0.6 ) |
|
779 rotateRate = mBrakeCount + 1; |
|
780 else if ( fdiff > 0.4 ) |
|
781 rotateRate = 2; |
|
782 else |
|
783 rotateRate = 1; |
|
784 |
|
785 if ( rotateRate > 5 ) |
|
786 rotateRate = 5; |
|
787 } |
|
788 else if ( fabs(shipDx) > 1 || fabs(shipDy) > 1 ) |
|
789 { |
|
790 thrustShip = TRUE; |
|
791 // we'll make braking a bit faster |
|
792 shipDx += cosangle/6 * (mBrakeCount - 1); |
|
793 shipDy += sinangle/6 * (mBrakeCount - 1); |
|
794 reducePower( BRAKE_ON_COST ); |
|
795 addExhaust( ship->x() + 20 - cosangle*22, |
|
796 ship->y() + 20 - sinangle*22, |
|
797 shipDx-cosangle, shipDy-sinangle, |
|
798 mBrakeCount+1 ); |
|
799 } |
|
800 } |
|
801 } |
|
802 |
|
803 if ( thrustShip ) |
|
804 { |
|
805 // The ship has a terminal velocity, but trying to go faster |
|
806 // still uses fuel (can go faster diagonally - don't care). |
|
807 double thrustx = cosangle/4; |
|
808 double thrusty = sinangle/4; |
|
809 if ( fabs(shipDx + thrustx) < MAX_SHIP_SPEED ) |
|
810 shipDx += thrustx; |
|
811 if ( fabs(shipDy + thrusty) < MAX_SHIP_SPEED ) |
|
812 shipDy += thrusty; |
|
813 ship->setVelocity( shipDx, shipDy ); |
|
814 reducePower( 1 ); |
|
815 addExhaust( ship->x() + 20 - cosangle*20, |
|
816 ship->y() + 20 - sinangle*20, |
|
817 shipDx-cosangle, shipDy-sinangle, 3 ); |
|
818 } |
|
819 |
|
820 ship->setFrame( shipAngle >> 1 ); |
|
821 |
|
822 if ( shootShip ) |
|
823 { |
|
824 if ( !shootDelay && (int)missiles.count() < mShootCount + 2 ) |
|
825 { |
|
826 KMissile *missile = new KMissile( animation[ID_MISSILE], &field ); |
|
827 missile->setPos( 21+ship->x()+cosangle*21, |
|
828 21+ship->y()+sinangle*21 ); |
|
829 missile->setFrame( 0 ); |
|
830 missile->setVelocity( shipDx + cosangle*MISSILE_SPEED, |
|
831 shipDy + sinangle*MISSILE_SPEED ); |
|
832 missiles.append( missile ); |
|
833 shotsFired++; |
|
834 reducePower( 1 ); |
|
835 |
|
836 shootDelay = 5; |
|
837 } |
|
838 |
|
839 if ( shootDelay ) |
|
840 shootDelay--; |
|
841 } |
|
842 |
|
843 if ( teleportShip ) |
|
844 { |
|
845 int ra = qrand() % 10; |
|
846 if( ra == 0 ) |
|
847 ra += qrand() % 20; |
|
848 int xra = ra * 60 + ( (qrand() % 20) * (qrand() % 20) ); |
|
849 int yra = ra * 50 - ( (qrand() % 20) * (qrand() % 20) ); |
|
850 ship->setPos( xra, yra ); |
|
851 } |
|
852 |
|
853 vitalsChanged = TRUE; |
|
854 } |
|
855 } |
|
856 |
|
857 // - - - |
|
858 |
|
859 void KAsteroidsView::processPowerups() |
|
860 { |
|
861 if ( !powerups.isEmpty() ) |
|
862 { |
|
863 // if player gets the powerup remove it from the screen, if option |
|
864 // "Can destroy powerups" is enabled and a missile hits the powerup |
|
865 // destroy it |
|
866 |
|
867 KPowerup *pup; |
|
868 Q3PtrListIterator<KPowerup> it( powerups ); |
|
869 |
|
870 for( ; it.current(); ++it ) |
|
871 { |
|
872 pup = it.current(); |
|
873 pup->growOlder(); |
|
874 |
|
875 if( pup->expired() ) |
|
876 { |
|
877 powerups.removeRef( pup ); |
|
878 continue; |
|
879 } |
|
880 |
|
881 wrapSprite( pup ); |
|
882 |
|
883 QList<QGraphicsItem *> hits = pup->collidingItems(); |
|
884 QList<QGraphicsItem *>::Iterator it; |
|
885 for ( it = hits.begin(); it != hits.end(); ++it ) |
|
886 { |
|
887 if ( (*it) == ship ) |
|
888 { |
|
889 switch( pup->type() ) |
|
890 { |
|
891 case ID_ENERGY_POWERUP: |
|
892 shipPower += 150; |
|
893 if ( shipPower > MAX_POWER_LEVEL ) |
|
894 shipPower = MAX_POWER_LEVEL; |
|
895 break; |
|
896 case ID_TELEPORT_POWERUP: |
|
897 mTeleportCount++; |
|
898 break; |
|
899 case ID_BRAKE_POWERUP: |
|
900 if ( mBrakeCount < MAX_BRAKES ) |
|
901 mBrakeCount++; |
|
902 break; |
|
903 case ID_SHIELD_POWERUP: |
|
904 if ( mShieldCount < MAX_SHIELDS ) |
|
905 mShieldCount++; |
|
906 break; |
|
907 case ID_SHOOT_POWERUP: |
|
908 if ( mShootCount < MAX_FIREPOWER ) |
|
909 mShootCount++; |
|
910 break; |
|
911 } |
|
912 |
|
913 powerups.removeRef( pup ); |
|
914 vitalsChanged = TRUE; |
|
915 } |
|
916 else if ( (*it) == shield ) |
|
917 { |
|
918 powerups.removeRef( pup ); |
|
919 } |
|
920 else if ( (*it)->type() == ID_MISSILE ) |
|
921 { |
|
922 if ( can_destroy_powerups ) |
|
923 { |
|
924 powerups.removeRef( pup ); |
|
925 } |
|
926 } |
|
927 } |
|
928 } |
|
929 } // -- if( powerups.isEmpty() ) |
|
930 } |
|
931 |
|
932 // - - - |
|
933 |
|
934 void KAsteroidsView::hideShield() |
|
935 { |
|
936 shield->hide(); |
|
937 mShieldCount = 0; |
|
938 shieldOn = FALSE; |
|
939 } |
|
940 |
|
941 double KAsteroidsView::randDouble() |
|
942 { |
|
943 int v = qrand(); |
|
944 return (double)v / (double)RAND_MAX; |
|
945 } |
|
946 |
|
947 int KAsteroidsView::randInt( int range ) |
|
948 { |
|
949 return qrand() % range; |
|
950 } |
|
951 |
|
952 void KAsteroidsView::showEvent( QShowEvent *e ) |
|
953 { |
|
954 #if defined( QT_LICENSE_PROFESSIONAL ) |
|
955 static bool wasThere = FALSE; |
|
956 |
|
957 if ( !wasThere ) { |
|
958 wasThere = TRUE; |
|
959 QMessageBox::information( this, tr("QGraphicsView demo"), |
|
960 tr("This game has been implemented using the QGraphicsView class.\n" |
|
961 "The QGraphicsView class is not part of the Light Platform Edition. Please \n" |
|
962 "contact Nokia if you want to upgrade to the Full Platform Edition.") ); |
|
963 } |
|
964 #endif |
|
965 |
|
966 QWidget::showEvent( e ); |
|
967 } |