Question

i’m in a problem and hope someone of u can help me. i’m working in a game in Android using Andengine. now i had a problem that take much time of me and i can’t solve

i had a line drawn in the scene, i want to move the end point (x2, y2) to another point as animation within 1 or 2 sec.
for example, line (x1 = 5, y1 = 0) and (x2 = 5, y2 = 10) , i want this line be taller but in animation to be (x1 = 5, y1 = 0) and (x2 = 5, y2 = 100)

PLEASE help me

Answer 1

I have found a solution and it is very simple. I have created new Modifier that inherits from the MoveModifier class and override the method of update :

public class LineMoveModifier extends MoveModifier{

public LineMoveModifier(float pDuration, float pFromX, float pToX,
        float pFromY, float pToY) {
    super(pDuration, pFromX, pToX, pFromY, pToY);
    // TODO Auto-generated constructor stub
}
public LineMoveModifier(final float pDuration, final float pFromX, final float pToX, final float pFromY, final float pToY, final IEntityModifierListener pEntityModifierListener, final IEaseFunction pEaseFunction) {
    super(pDuration, pFromX, pToX, pFromY, pToY, pEntityModifierListener, pEaseFunction);
}

@Override
protected void onSetValues(final IEntity pEntity, final float pPercentageDone, final float pX, final float pY) {
    Line x = (Line)pEntity;
    x.setPosition(x.getX1(), x.getY1(), pX, pY);
}

}

now when using it for example:

x = new Line(0, 0, 5, 5, 5, getVertexBufferObjectManager(), DrawType.DYNAMIC);
     LineMoveModifier lmm = new LineMoveModifier(5, 5, 400, 5, 700);
     mainScene.attachChild(x);

Hope it helps 🙂