Game Development Reference
In-Depth Information
// Determine if ball is on the green.
if ( golfball.getX() > distanceToHole - 10.0 &&
golfball.getX() < distanceToHole + 10.0 &&
golfball.getY() < 10.0) {
g.drawString("You're on the green", 100, 30);
}
else {
drawingPanel.getGraphics().drawString("You missed", 100, 30);
}
}
}
}
}
Because the
SimpleProjectile
class is a subclass of
ODE
, the Java compiler will have to have
access to the
ODE
class source file or class file when the
GolfGame
class is compiled. Play around
with the Golf Game. You will find that it takes some fairly small adjustments to get the ball to
land within 10
m
of the green. If the view axes are changed to “XY”, the result is a bird's-eye
view of the hole as shown in Figure 5-5. The display now tracks the horizontal components of
the golf ball trajectory. The green is shown as a circle with a radius of 10
m
. Try giving the golf
ball an initial y-velocity component and see what happens.
Figure 5-5.
A bird's-eye view of the Golf Game
