Android Open Source - diploma-assignment Ballista

From Project

Back to project page diploma-assignment.

License

The source code is released under:

MIT License

If you think the Android project diploma-assignment listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

package com.me.battlescreen;
/*  w w w . jav  a 2 s  .c o  m*/
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.Batch;
import com.badlogic.gdx.scenes.scene2d.Actor;


public class Ballista extends Actor{

  private float angle=0.0f;
  private boolean attacking;
  private int frame;
  private BattleScreen screen;
  private Texture mine;
  private Texture arrow;
  private final float X,Y;
  private int mineFrLen;
  
  public Ballista(BattleScreen s,Texture t,Texture a,int h, int coordinateY){
    mine=t;
    arrow=a;
    mineFrLen=t.getWidth()/Constants.BALLISTA_FRAMES;
    screen=s;
    this.setHeight(h);
    int width=(int) (h*t.getWidth()/(t.getHeight()*Constants.BALLISTA_FRAMES));
    this.setWidth(width);
    X=-(int)((width)*Constants.DISPLACEMENT_X_BALLISTA);
    Y=coordinateY;
    attacking=false;
    frame=0;
    Constants.ARROW_VELOCITY=(int) ((Constants.BACKWIDTH*0.7f)
        /(Constants.ARROW_TIME*Math.cos(Constants.MAX_ANGLE_BALLISTA*Math.PI/180)));
    Constants.GRAVITY=(float) ((-(Y+this.getHeight()/2)-Math.sin(Math.PI/4)
        *Constants.ARROW_VELOCITY*Constants.ARROW_TIME)/(Constants.ARROW_TIME
        *Constants.ARROW_TIME/2));
  }
  
  public void changeAttack(){
    attacking=!attacking;
    frame=0;
  }
  
  public void changeAngle(int i){
    if(Math.abs(angle+i)<Constants.MAX_ANGLE_BALLISTA)
      angle=angle+i;
  }
  
  @Override
  public void draw(Batch batch,float parentAlpha){
    this.drawMine(batch,screen.getBg().getCoordsX());
  }
  
  private void drawMine(Batch batch,int currX){
    if(!attacking || frame==Constants.BALLISTA_FRAMES){
      if(frame==Constants.BALLISTA_FRAMES)
        screen.addArrow(new BallistaArrow(screen,Constants.ARROW_VELOCITY,X+this.getWidth()/
            12,Y+this.getHeight()/2,angle,arrow));      
      frame=0;
    }
    batch.draw(mine, X-currX, Y,this.getWidth()/2, 0, this.getWidth(), this.getHeight(), 1, 1,
        angle,frame*mineFrLen, 0,mineFrLen, mine.getHeight(), false, false);
    
    frame++;
  }

}

Java Source Code List