Game Development Reference
In-Depth Information
case
GAME_RUNNING:
presentRunning();
break
;
case
GAME_PAUSED:
presentPaused();
break
;
case
GAME_LEVEL_END:
presentLevelEnd();
break
;
case
GAME
_
OVER
:
presentGameOver();
break
;
}
batcher.endBatch();
gl.glDisable(GL10.
GL
_
BLEND
);
}
Rendering of the game screen is done in two steps. We first render the actual game world via the
WorldRenderer
class, and then render all the UI elements on top of the game world depending
on the current state of the game screen. The
render()
method does just that. As with our update
methods, we again have a separate rendering method for all the subscreens.
private void
presentReady() {
batcher.drawSprite(160, 240, 192, 32, Assets.
ready
);
}
The
presentRunning()
method just displays the pause button in the top-right corner and the
score string in the top-left corner.
private void
presentRunning() {
batcher.drawSprite(320 - 32, 480 - 32, 64, 64, Assets.
pause
);
Assets.
font
.drawText(batcher, scoreString, 16, 480-20);
}
In the
presentRunning()
method, we simply render the pause button and the current score
string.
private void
presentPaused() {
batcher.drawSprite(160, 240, 192, 96, Assets.
pauseMenu
);
Assets.
font
.drawText(batcher, scoreString, 16, 480-20);
}
The
presentPaused()
method displays the pause menu UI elements and the score again.
private void
presentLevelEnd() {
String topText = "the princess is ...";
String bottomText = "in another castle!";
float
topWidth = Assets.
font
.glyphWidth * topText.length();
float
bottomWidth = Assets.
font
.glyphWidth * bottomText.length();
Assets.
font
.drawText(batcher, topText, 160 - topWidth / 2, 480 - 40);
Assets.
font
.drawText(batcher, bottomText, 160 - bottomWidth / 2, 40);
}
