Game Development Reference
In-Depth Information
titleScreen = new BasicScreen(FrameWorkStates.STATE_SYSTEM_TITLE,
400,400,false,0x0000dd );
titleScreen.createOkButton("OK", new Point(170, 250), 40, 20,
screenButtonFormat, 0x000000, 0xff0000,2);
titleScreen.createDisplayText("Stub Game", 100,new Point
(145,150), screenTextFormat);
The
titleScreen
object is created by passing in a constant for the
id
value of the
BasicScreen
instance. We are using the
FrameWorkStates
constants for the
BasisScreen
id
values. The
titleScreen
also accepts in the
width
(
400
), height (
400
),
isTransparent
(
false
), and color value
for the background of the screen (
0x0000dd
).
The next task we must complete when creating an instance of the
BasicScreen
class is decide if
we want any text or OK button on the screen. Those are set up by calling the associated public
functions in the
BasicScreen
class. The
titleScreen.createOkButton
function all in the stub
game creates a
SimpleBlitButton
instance with
OK
as the text of the button,
170,250
as the
location, and
20
as the width of the button. We also pass in the
screenButtonFormat
as the
TextFormat
for the OK text, the off color as black, and the over color and red. The final number we
pass in,
2
, is a buffer amount used for positioning the text on the button.
The
createDisplayText
function takes in the text to put on to the
titleScreen
,
Stub Game
, as well
as the
width
(
100
), location for the text box (
145,150
), and the
TextFormat
(
screenTextFromat
) for
the text on the screen.
Creating the instructions screen
The
instructionsScreen
is instantiated exactly like the
titleScreen
only with parameter values
passed in specific to the instructions. Some of the differences you will notice are the use of the
FrameWorkStates.STATE_SYSTEM_INSTRUCTIONS
for the
id
value of the
BasicScreen
instance, the
new text for the button
Play
, and the new text for the screen,
Click the mouse\n10 times
. You
will also notice that some sizes and locations have been customized for these new text values.
The “\n” character is an “escape sequence”. When placed in a String, it will force the TextField to
start a “new line” and place the text following it on this new line.
instructionsScreen = new BasicScreen(FrameWorkStates.
STATE_SYSTEM_INSTRUCTIONS,400,400, false,0x0000dd);
instructionsScreen.createOkButton("Play", new Point
(150, 250), 80, 20,screenButtonFormat, 0x000000, 0xff0000,2);
instructionsScreen.createDisplayText(
"Click the mouse\n10 times",150,new Point(120,150), screenTextFormat);
Creating the game over screen
The
gameOverScreen
is instantiated exactly like the
instructionsScreen
only with parameter
values passed in specific to the game over state. Some of the differences you will notice are the
use of the
FrameWorkStates.STATE_SYSTEM_GAME_OVER
for the
id
value of the
BasicScreen
instance, the new text for the button OK, and the new text for the screen,
Game Over
You will also
notice that some sizes and locations have been customized for these new text values.
