Game Development Reference
In-Depth Information
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Line
: This allows the player to draw a line (by using a swipe gesture) in the
specific direction.
•
Figures
: This allows the player to draw a multipoint symbol.
•
Shakes
: This is an optional mode. It motivates the player to use more active
type of interactions by using capabilities of the internal accelerometer and
gyroscope. The game waits for the player to shake or tilt the device in a spe-
cific direction.
It is good to start with a simple system based only on two nodes at a time. The game
only asks the player to portray the tap point or the line. Such a concept can be useful
at the early stages of the game when the difficulty level is easy. The player is in a
comfort zone and can naturally figure out the principles of the gameplay. An iconic
representation of this system can look like a circle with a two holes. It can help to
create gestures for the game. All the gestures at this step are single-touch; the play-
er needs only one finger to make the input.
Advanced game levels allow multipoint gestures (this is a very good opportunity to
utilize the multitouch input system of the iOS devices). They are based on four con-
trol nodes: four corner input points (the center is optional). This system requires the
use of two fingers (the thumb and the index finger) on each side of the screen. The
gestures can be asymmetric now. That is not easy for the player; it can be very chal-
lenging especially at a high speed.
