我需要在点击时找到等距瓷砖的坐标。我已经把它弄清楚了。 Y值正确返回,但显然我的X公式不正确,我收到了负值。
图表A:
灰色瓷砖应该是0,0但是由于某种原因我得到了-5 ...
这是我的代码。
这里我们制作地图(可能与问题无关,但这里只是为了说明我是如何做事的)。 ObjectID只是一个存储磁贴类型的枚举。
ObjectID tile_map[][] = new ObjectID[][] {
{ObjectID.Ground_Concrete, ObjectID.Ground_Grass, ObjectID.Ground_Grass, ObjectID.Ground_Grass},
{ObjectID.Ground_Grass, ObjectID.Ground_Grass, ObjectID.Ground_Grass, ObjectID.Ground_Grass},
{ObjectID.Ground_Grass, ObjectID.Ground_Grass, ObjectID.Ground_Grass, ObjectID.Ground_Grass},
{ObjectID.Ground_Grass, ObjectID.Ground_Grass, ObjectID.Ground_Grass, ObjectID.Ground_Grass},
{ObjectID.Ground_Grass, ObjectID.Ground_Grass, ObjectID.Ground_Grass, ObjectID.Ground_Grass},
};
我们加载地图循环遍历上面的数组并将它们添加到LinkedList(通过handler.addObject()),存储它们的x和y值以及tile类型,以及它们的宽度和高度。
private void loadMap(ObjectID map[][]) {
int x = offsetX, y = offsetY;
//int tile_width = 128, tile_height = 128;
for(int i = 0; i < map.length; i++) {
for(int j = map[i].length-1; j >= 0; j--) {
handler.addObejct(new objGround(x + (j * map[i][j].getWidth() / 2) + (i * map[i][j].getWidth() / 2), y + (i * map[i][j].getBottomGroundPlane() / 2) - (j * map[i][j].getBottomGroundPlane() / 2), map[i][j]));
}
}
}
我们的MouseListener
private class MouseListener extends MouseInputAdapter {
public void mousePressed(MouseEvent e) {
if(!dragging) {
getTileByXY(e.getX(), e.getY());
}
}
public void mouseDragged(MouseEvent e) {
//System.out.println("mosue pressed");
if(SwingUtilities.isRightMouseButton(e)) {
if(e.getX() != mX || e.getY() != mY) {
dragging = true;
if(e.getX() < mX) {
offsetX -= (mX - e.getX());
} else {
offsetX += (e.getX() - mX);
}
if(e.getY() < mY) {
offsetY -= (mY - e.getY());
} else {
offsetY += (e.getY() - mY);
}
mX = e.getX();
mY = e.getY();
//System.out.println("ox: " + offsetX + " oy: " + offsetY);
}
}
}
...
}
最后我们的Tile Getter主要问题在于htx:
private void getTileByXY(int x, int y) {
int tileW = 127;
int tileH = 63;
x += (tileW * 2);
y += (tileH * 2);
int htx = (int)(((double)(offsetX - x) / (double)tileW) + ((double)(offsetY - y) / (double)tileH) - 0.5);
int hty = (int)(((double)(offsetY - y) / (double)tileH) - ((double)(offsetX - x) / (double)tileW) + 0.5);
System.out.println("htx: " + htx + " hty: " + hty);
}
答案 0 :(得分:0)
尝试使用Photoshop和Excel并假设您的原点位于左上角,您的offsetX是最左侧单元格的左侧,而您的offsetY是最左侧单元格的底部:
int htx = (int)(((double)(x - offsetX) / (double)tileW) - ((double)(offsetY - y) / (double)tileH) + 0.5);
int hty = (int)(((double)(offsetY - y) / (double)tileH) + ((double)(x - offsetX) / (double)tileW) - 0.5);
答案 1 :(得分:0)
问题是我正在将tileW * 2和tileH * 2添加到x和y。这是我最初发现的例子。评论它们会修复它,现在瓷砖会返回正确的值!
//x += (tileW * 2);
//y += (tileH * 2);
int htx = (int)(((double)(x - offsetX) / (double)tileW) + ((double)(y - offsetY) / (double)tileH) - 0.5);
int hty = (int)(((double)(offsetY - y) / (double)tileH) - ((double)(offsetX - x) / (double)tileW) + 0.5);