1 files changed, 330 insertions, 0 deletions
diff --git a/examples3/tut13.py b/examples3/tut13.py
new file mode 100755
index 0000000..a973ea7
--- /dev/null
+++ b/examples3/tut13.py
@@ -0,0 +1,330 @@
+#!/usr/bin/env python
+
+# Qt tutorial 13.
+
+import sys
+import math
+import random
+import qt
+
+
+class LCDRange(qt.QWidget):
+    def __init__(self, s=None, parent=None, name=None):
+        qt.QWidget.__init__(self, parent, name)
+
+        lcd = qt.QLCDNumber(2, self, "lcd")
+        self.slider = qt.QSlider(qt.Qt.Horizontal, self, "slider")
+        self.slider.setRange(0, 99)
+        self.slider.setValue(0)
+
+        self.label = qt.QLabel(" ", self, "label")
+        self.label.setAlignment(qt.Qt.AlignCenter)
+
+        self.connect(self.slider, qt.SIGNAL("valueChanged(int)"), lcd, qt.SLOT("display(int)"))
+        self.connect(self.slider, qt.SIGNAL("valueChanged(int)"), self, qt.PYSIGNAL("valueChanged(int)"))
+
+        self.setFocusProxy(self.slider)
+
+        l = qt.QVBoxLayout(self)
+        l.addWidget(lcd, 1)
+        l.addWidget(self.slider)
+        l.addWidget(self.label)
+
+        if s is not None:
+            self.setText(s)
+
+    def value(self):
+        return self.slider.value()
+
+    def setValue(self, value):
+        self.slider.setValue(value)
+
+    def setRange(self, minVal, maxVal):
+        if minVal < 0 or maxVal > 99 or minVal > maxVal:
+            raise ValueError, "LCDRange.setRange(): invalid range"
+
+        self.slider.setRange(minVal, maxVal)
+
+    def text(self):
+        return self.label.text()
+
+    def setText(self, s):
+        self.label.setText(s)
+
+
+class CannonField(qt.QWidget):
+    def __init__(self, parent=None, name=None):
+        qt.QWidget.__init__(self, parent, name)
+
+        self.ang = 45
+        self.f = 0
+        self.timerCount = 0
+
+        self.autoShootTimer = qt.QTimer(self, "movement handler")
+        self.connect(self.autoShootTimer, qt.SIGNAL("timeout()"), self.moveShot)
+
+        self.shoot_ang = 0
+        self.shoot_f = 0
+        self.target = qt.QPoint(0, 0)
+        self.gameEnded = 0
+
+        self.setPalette(qt.QPalette(qt.QColor(250, 250, 200)))
+
+        self.barrelRect = qt.QRect(33, -4, 15, 8)
+
+        self.newTarget()
+
+    def angle(self):
+        return self.ang
+
+    def setAngle(self, degrees):
+        if degrees < 5:
+            degrees = 5
+        if degrees > 70:
+            degrees = 70
+        if self.ang == degrees:
+            return
+        self.ang = degrees
+        self.repaint(self.cannonRect(), 0)
+        self.emit(qt.PYSIGNAL("angleChanged(int)"), (self.ang, ))
+
+    def force(self):
+        return self.f
+
+    def setForce(self, newton):
+        if newton < 0:
+            newton = 0
+        if self.f == newton:
+            return
+        self.f = newton
+        self.emit(qt.PYSIGNAL("forceChanged(int)"), (self.f, ))
+
+    def shoot(self):
+        if self.isShooting():
+            return
+
+        self.timerCount = 0
+        self.shoot_ang = self.ang
+        self.shoot_f = self.f
+        self.autoShootTimer.start(50)
+        self.emit(qt.PYSIGNAL("canShoot(bool)"), (0, ))
+
+    def newTarget(self):
+        r = qt.QRegion(self.targetRect())
+        self.target = qt.QPoint(random.randint(200, 390), random.randint(10, 265))
+        self.repaint(r.unite(qt.QRegion(self.targetRect())))
+
+    def gameOver(self):
+        return self.gameEnded
+
+    def setGameOver(self):
+        if self.gameEnded:
+            return
+        if self.isShooting():
+            self.autoShootTime.stop()
+        self.gameEnded = 1
+        self.repaint()
+
+    def restartGame(self):
+        if self.isShooting():
+            self.autoShootTime.stop()
+        self.gameEnded = 0
+        self.repaint()
+        self.emit(qt.PYSIGNAL("canShoot(bool)"), (1, ))
+
+    def moveShot(self):
+        r = qt.QRegion(self.shotRect())
+        self.timerCount = self.timerCount + 1
+
+        shotR = self.shotRect()
+
+        if shotR.intersects(self.targetRect()):
+            self.autoShootTimer.stop()
+            self.emit(qt.PYSIGNAL("hit()"), ())
+            self.emit(qt.PYSIGNAL("canShoot(bool)"), (1, ))
+        elif shotR.x() > self.width() or shotR.y() > self.height():
+            self.autoShootTimer.stop()
+            self.emit(qt.PYSIGNAL("missed()"), ())
+            self.emit(qt.PYSIGNAL("canShoot(bool)"), (1, ))
+        else:
+            r = r.unite(qt.QRegion(shotR))
+
+        self.repaint(r)
+
+    def paintEvent(self, ev):
+        updateR = ev.rect()
+        p = qt.QPainter(self)
+
+        if self.gameEnded:
+            p.setPen(qt.Qt.black)
+            p.setFont(qt.QFont("Courier", 48, qt.QFont.Bold))
+            p.drawText(self.rect(), qt.Qt.AlignCenter, "Game Over")
+
+        if updateR.intersects(self.cannonRect()):
+            self.paintCannon(p)
+
+        if self.isShooting() and updateR.intersects(self.shotRect()):
+            self.paintShot(p)
+
+        if not self.gameEnded and updateR.intersects(self.targetRect()):
+            self.paintTarget(p)
+
+    def paintShot(self, p):
+        p.setBrush(qt.Qt.black)
+        p.setPen(qt.Qt.NoPen)
+        p.drawRect(self.shotRect())
+
+    def paintTarget(self, p):
+        p.setBrush(qt.Qt.red)
+        p.setPen(qt.Qt.black)
+        p.drawRect(self.targetRect())
+
+    def paintCannon(self, p):
+        cr = self.cannonRect()
+        pix = qt.QPixmap(cr.size())
+        pix.fill(self, cr.topLeft())
+
+        tmp = qt.QPainter(pix)
+        tmp.setBrush(qt.Qt.blue)
+        tmp.setPen(qt.Qt.NoPen)
+
+        tmp.translate(0, pix.height() - 1)
+        tmp.drawPie(qt.QRect(-35, -35, 70, 70), 0, 90 * 16)
+        tmp.rotate(-self.ang)
+        tmp.drawRect(self.barrelRect)
+        tmp.end()
+
+        p.drawPixmap(cr.topLeft(), pix)
+
+    def cannonRect(self):
+        r = qt.QRect(0, 0, 50, 50)
+        r.moveBottomLeft(self.rect().bottomLeft())
+        return r
+
+    def shotRect(self):
+        gravity = 4.0
+
+        time = self.timerCount / 4.0
+        velocity = self.shoot_f
+        radians = self.shoot_ang * 3.14159265 / 180
+
+        velx = velocity * math.cos(radians)
+        vely = velocity * math.sin(radians)
+        x0 = (self.barrelRect.right() + 5) * math.cos(radians)
+        y0 = (self.barrelRect.right() + 5) * math.sin(radians)
+        x = x0 + velx * time
+        y = y0 + vely * time - 0.5 * gravity * time * time
+
+        r = qt.QRect(0, 0, 6, 6)
+        r.moveCenter(qt.QPoint(x, self.height() - 1 - y))
+        return r
+
+    def targetRect(self):
+        r = qt.QRect(0, 0, 20, 10)
+        r.moveCenter(qt.QPoint(self.target.x(), self.height() - 1 - self.target.y()))
+        return r
+
+    def isShooting(self):
+        return self.autoShootTimer.isActive()
+
+    def sizePolicy(self):
+        return qt.QSizePolicy(qt.QSizePolicy.Expanding, qt.QSizePolicy.Expanding)
+
+
+class GameBoard(qt.QWidget):
+    def __init__(self, parent=None, name=None):
+        qt.QWidget.__init__(self, parent, name)
+
+        quit = qt.QPushButton("&Quit", self, "quit")
+        quit.setFont(qt.QFont("Times", 18, qt.QFont.Bold))
+        self.connect(quit, qt.SIGNAL("clicked()"), qt.qApp, qt.SLOT("quit()"))
+
+        self.angle = LCDRange("ANGLE", self, "angle")
+        self.angle.setRange(5, 70)
+
+        self.force = LCDRange("FORCE", self, "force")
+        self.force.setRange(10, 50)
+
+        self.cannonField = CannonField(self, "cannonField")
+
+        self.connect(self.angle, qt.PYSIGNAL("valueChanged(int)"), self.cannonField.setAngle)
+        self.connect(self.cannonField, qt.PYSIGNAL("angleChanged(int)"), self.angle.setValue)
+
+        self.connect(self.force, qt.PYSIGNAL("valueChanged(int)"), self.cannonField.setForce)
+        self.connect(self.cannonField, qt.PYSIGNAL("forceChanged(int)"), self.force.setValue)
+
+        self.connect(self.cannonField, qt.PYSIGNAL("hit()"), self.hit)
+        self.connect(self.cannonField, qt.PYSIGNAL("missed()"), self.missed)
+
+        self.shoot = qt.QPushButton("&Shoot", self, "shoot")
+        self.shoot.setFont(qt.QFont("Times", 18, qt.QFont.Bold))
+        self.connect(self.shoot, qt.SIGNAL("clicked()"), self.fire)
+        self.connect(self.cannonField, qt.PYSIGNAL("canShoot(bool)"), self.shoot, qt.SLOT("setEnabled(bool)"))
+
+        restart = qt.QPushButton("&New Game", self, "newgame")
+        restart.setFont(qt.QFont("Times", 18, qt.QFont.Bold))
+        self.connect(restart, qt.SIGNAL("clicked()"), self.newGame)
+
+        self.hits = qt.QLCDNumber(2, self, "hits")
+        self.shotsLeft = qt.QLCDNumber(2, self, "shotsleft")
+        hitsL = qt.QLabel("HITS", self, "hitsLabel")
+        shotsLeftL = qt.QLabel("SHOTS LEFT", self, "shotsleftLabel")
+
+        grid = qt.QGridLayout(self, 2, 2, 10)
+        grid.addWidget(quit, 0, 0)
+        grid.addWidget(self.cannonField, 1, 1)
+        grid.setColStretch(1, 10)
+
+        leftBox = qt.QVBoxLayout()
+        grid.addLayout(leftBox, 1, 0)
+        leftBox.addWidget(self.angle)
+        leftBox.addWidget(self.force)
+
+        topBox = qt.QHBoxLayout()
+        grid.addLayout(topBox, 0, 1)
+        topBox.addWidget(self.shoot)
+        topBox.addWidget(self.hits)
+        topBox.addWidget(hitsL)
+        topBox.addWidget(self.shotsLeft)
+        topBox.addWidget(shotsLeftL)
+        topBox.addStretch(1)
+        topBox.addWidget(restart)
+
+        self.angle.setValue(60)
+        self.force.setValue(25)
+        self.angle.setFocus()
+
+        self.newGame()
+
+    def fire(self):
+        if self.cannonField.gameOver() or self.cannonField.isShooting():
+            return
+        self.shotsLeft.display(self.shotsLeft.intValue() - 1)
+        self.cannonField.shoot()
+
+    def hit(self):
+        self.hits.display(self.hits.intValue() + 1)
+        if self.shotsLeft.intValue() == 0:
+            self.cannonField.setGameOver()
+        else:
+            self.cannonField.newTarget()
+
+    def missed(self):
+        if self.shotsLeft.intValue() == 0:
+            self.cannonField.setGameOver()
+
+    def newGame(self):
+        self.shotsLeft.display(15)
+        self.hits.display(0)
+        self.cannonField.restartGame()
+        self.cannonField.newTarget()
+
+
+qt.QApplication.setColorSpec(qt.QApplication.CustomColor)
+a = qt.QApplication(sys.argv)
+
+gb = GameBoard()
+gb.setGeometry(100, 100, 500, 355)
+a.setMainWidget(gb)
+gb.show()
+sys.exit(a.exec_loop())