J2ME 2D Small Game entry (vi) Timers and rewards and punishments and evaluations

Evaluation six, timer and rewards and punishments and evaluation

It's time for us to join our timer, and I'm going to start timing from the beginning of the game and keep updating to the screen, and the timer stops working after the game is over.



First, the current moment is recorded at the time of initialization:

gametime=0;

Gametimeoffset=system.currenttimemillis ();



In the future, as long as the game does not gameover in each update cycle are calculated:

Gametime= (System.currenttimemillis ()-gametimeoffset)/1000;

Convert to Seconds



The next thing to do is to show it, remember we have implemented the font class, this is useful, first of all, instantiate a font class:

Img=imagetools.getimage ("/pic/b_number.png");

Fontbig=new Font (g,img,10,15,

New char[]{' 0 ', ' 1 ', ' 2 ', ' 3 ', ' 4 ', ' 5 ', ' 6 ', ' 7 ', ' 8 ', ' 9 '};

And then there's the display:

Fontbig.drawstring (String.valueof (gametime), screenwidth/2-15,10);

It's really convenient yeah!.





Then there is the reward system, which we require to add a bomb to the player every 20s.

int awardindex= (int) gametime/20;//Calculation award Time

if (awardindex>bombawardtop)

Awardindex=bombawardtop;

if (bombaward[awardindex]!=0) {//If this 20s is not rewarded

Bombnum+=bombaward[awardindex];

bombaward[awardindex]=0;//rewarded.

}



As simple as possible and give some hints is I write the principle of this article, so the evaluation system, very EZ.

We create a helper class that provides a way to enter the game time and return a string comment.

public class Stringtools {

Protected Stringtools () {

}



public static String timeopinion (long gametime) {

if (gametime<10) {

Return "does you have with your foot";

Return "I can ' t belive,your are a game master";

}else if (gametime<16) {

Return "Come boy, can do it!";

}else if (gametime<20) {

Return "What a pity! Try again. ";

}else if (gametime<25) {

Return "Very OK, you are a real man."

}else if (gametime<30) {

Return "I know your have talent of this game."

}else if (gametime<40) {

Return "I can ' t belive, your are a game master";

}else{

Return "Oh I God, are you a human";

}

}

}

Then it shows up, I don't have the right size font picture on hand, I use it directly

g.DrawString (Stringtools.timeopinion (gametime), 5,22,g.left|g.top);

Want to be in the small screen of mobile phone so that things are very difficult, in fact, this is my mobile phone to play the game is not interested, but I am full of confidence in mobile phone network applications.