Question

我正在尝试编写Android游戏，但目前我遇到一个问题，即四个条件中的两个条件正常工作，但不知道为什么后两个条件不起作用。我的意思不是条件，而是在那里精确分配的两个负值。

  public abstract class GameMovingObject {

(...)

  public void update()  {
    this.colUsing++;
    if(colUsing >= this.colCount)  {
        this.colUsing =0;
    }
    // Current time in nanoseconds
    long now = System.nanoTime();

    // Never once did draw.
    if(lastDrawNanoTime==-1) {
        lastDrawNanoTime= now;
    }
    // Change nanoseconds to milliseconds (1 nanosecond = 1000000 milliseconds).
    int deltaTime = (int) ((now - lastDrawNanoTime)/   777777 );

    // Distance moves
    float distance = velocity * deltaTime;

    double movingVectorLength = Math.sqrt(movingVectorX* movingVectorX + movingVectorY*movingVectorY);

    // Calculate the new position of the game character.
    this.x = x +  (int)(distance* movingVectorX / movingVectorLength);
    this.y = y +  (int)(distance* movingVectorY / movingVectorLength);

    // When the game's character touches the edge of the screen, then change direction

    if(this.x < 0 )  {
        this.x = 0;
        this.movingVectorX = - this.movingVectorX;
    } else if(this.x > this.gameSurface.getWidth() -width)  {
        this.x= this.gameSurface.getWidth()-width;
        this.movingVectorX = - this.movingVectorX;
    }

    if(this.y < 0 )  {
        this.y = 0;
        this.movingVectorY = - this.movingVectorY;
    }

    // rowUsing (obraca ludzika)
    if( movingVectorX > 0 )
    {
        if(movingVectorY > 0 && Math.abs(movingVectorX) < Math.abs(movingVectorY)) {
            this.rowUsing = ROW_TOP_TO_BOTTOM;
        }
        else if(movingVectorY < 0 && Math.abs(movingVectorX) < Math.abs(movingVectorY)) {
            this.rowUsing = ROW_BOTTOM_TO_TOP;
        }
        else  {
            this.rowUsing = ROW_LEFT_TO_RIGHT;
        }
    }
    else
    {
        if(movingVectorY > 0 && Math.abs(movingVectorX) < Math.abs(movingVectorY)) {
            this.rowUsing = ROW_TOP_TO_BOTTOM;
        }
        else if(movingVectorY < 0 && Math.abs(movingVectorX) < Math.abs(movingVectorY)) {
            this.rowUsing = ROW_BOTTOM_TO_TOP;
        }
        else if(movingVectorX!=0 || movingVectorY!=0)  {
            this.rowUsing = ROW_RIGHT_TO_LEFT;
        }
    }
}

和另一个班

public class Enemy extends GameMovingObject {

(...)
public void moveFreely(ChibiCharacter chibi, int xWhenInvoked, int YwhenInvoked, int enemyNode, int chibiNode, Canvas ca, Graph g, Vertex[] v, Edge[] e) {
        setMovingVector(0, 0);


        if (chibi.getX() < this.getX()) {
            //ok
            setX((cellWidth * ((getX() / cellWidth))) + (cellWidth / 2) - (getWidth() / 2));
        }
        if (chibi.getX() > this.getX() && raz == false) {
            setX((cellWidth * ((getX() / cellWidth))) + (cellWidth) + (cellWidth / 2) - (getWidth() / 2));
            raz = true;
        }


        if (chibi.getY() < this.getY()) {
            //ok
            setY((cellHeight * ((getY() / cellHeight))) + (cellHeight / 2) - (getHeight() / 2));
        }
        if (chibi.getY() > this.getY() && raz2 == false) {
            setY((cellHeight * ((getY() / cellHeight))) + (cellHeight) + (cellHeight / 2) - (getHeight() / 2));
            raz2 = true;
        }

        stop = true;

        followChibi(enemyNode, chibiNode, ca, pt.pBlack, g, v, e);
}

public void showAttention(Canvas canvas, Paint p, ChibiCharacter chibi) {

    if (Integer.parseInt(list.get(1)) == gs.enemyNode + 6 && list.size() > 2)
        movingVectorY = 1;
    if (Integer.parseInt(list.get(1)) == gs.enemyNode + 1 && list.size() > 2)
        movingVectorX = 1;
    if (Integer.parseInt(list.get(1)) == gs.enemyNode - 6 && list.size() > 2)
        movingVectorY = -1;
    if (Integer.parseInt(list.get(1)) == gs.enemyNode - 1 && list.size() > 2)
        movingVectorX = -1;

}
}

问题在于后两个条件似乎不起作用，即敌人没有进入玩家的角色，而是前两个条件按预期工作。为什么会这样？

敌人没有移向玩家角色

0 个答案: