/**
* 获取某张地图上以center为圆心，朝向target，且半径为radius，角度为angle的扇形区域内的UnitObject，isFront用于选择是正面还是背面，true正面
*
* @param stageObj
* @param center
* @param target
* @param radius
* @param angle
* @param isFront
* @return
*/
public List<UnitObject> getUnitObjsInSector(
StageObject stageObj,
Vector2D center,
Vector2D target,
double radius,
int angle,
boolean isFront) {
// 如果是取背面，把目标点变为中心点的对称点
if (!isFront) {
double x = 2 * target.x - center.x;
double y = 2 * target.y - center.y;
target = new Vector2D(x, y);
}
List<UnitObject> result = new ArrayList<>();
for (WorldObject wo : stageObj.getWorldObjs().values()) {
if (!(wo instanceof UnitObject)) continue;
// 如果该UnitObject在扇形区域内
if (isPosInSector(wo.posNow, center, target, radius, angle)) {
result.add((UnitObject) wo);
}
}
return result;
}
/**
* 获取以pos为圆心，半径为radius的圆形区域内的UnitObject
*
* @param stageObj
* @param pos
* @param radius
* @return
*/
public List<UnitObject> getUnitObjsInCircle(StageObject stageObj, Vector2D pos, double radius) {
List<UnitObject> result = new ArrayList<>();
for (UnitObject uo : stageObj.getUnitObjs().values()) {
// 判断距离是否符合要求
Vector2D p = uo.posNow;
if (pos.distance(p) < radius) {
result.add(uo);
}
}
return result;
}
/**
* 范围内HP 最少的
*
* @param stageObj
* @param exclude
* @param pos
* @param radius
* @return
*/
public UnitObject getUnitObjsInCircleHpLeast(
StageObject stageObj, List<UnitObject> exclude, Vector2D pos, double radius) {
int hpMax = 9999999;
UnitObject hpLeastObj = null;
for (UnitObject uo : stageObj.getUnitObjs().values()) {
// 判断距离是否符合要求
Vector2D p = uo.posNow;
if (pos.distance(p) < radius) {
if (uo.getUnit().getHpCur() < hpMax && !exclude.contains(uo)) {
hpLeastObj = uo;
hpMax = uo.getUnit().getHpCur();
}
}
}
return hpLeastObj;
}
public List<UnitObject> getUnitObjsInCircleProfession(
StageObject stageObj, int profession, Vector2D pos, double radius) {
List<UnitObject> result = new ArrayList<>();
int pro = 0;
if ((profession & 1) > 0) {
pro = 1;
} else if ((profession & 2) > 0) {
pro = 2;
} else if ((profession & 4) > 0) {
pro = 3;
}
for (UnitObject uo : stageObj.getUnitObjs().values()) {
// 判断距离是否符合要求
Vector2D p = uo.posNow;
if (pos.distance(p) < radius) {
if (uo.profession == pro) {
result.add(uo);
}
}
}
return result;
}
/**
* 获取以pos位置为起点，target为终点的线段，往线段两边扩展width/2，并且从起始点为长度length的矩形区域内的unitObj
*
* @param stageObj
* @param pos
* @param length
* @param width
* @return
*/
public List<UnitObject> getUnitObjsInRectangle(
StageObject stageObj, Vector2D pos, Vector2D target, double height, double width) {
List<UnitObject> result = new ArrayList<>();
double c = pos.distance(target);
// 利用余弦定理计算夹角a的余弦值
double cosA = (double) (target.x - pos.x) / c;
double sinA = (double) (target.y - pos.y) / c;
for (UnitObject uo : stageObj.getUnitObjs().values()) {
// 判断距离是否符合要求
Vector2D p = uo.posNow;
// p绕pos点旋转-A角度到新坐标
// 如果P点绕另一点P0（x0,y0）旋转β到点P1，旋转后位置计算公式如下：
// dx = x-x0;
// dy = y-y0;
// x1=cos(β)*dx-sin(β)*dy+x0;
// y1=cos(β)*dy+sin(β)*dx+y0;
double cosB = cosA;
double sinB = -sinA;
double dx = p.x - pos.x;
double dy = p.y - pos.y;
double x1 = cosB * dx - sinB * dy + pos.x;
double y1 = cosB * dy + sinB * dx + pos.y;
if (x1 >= pos.x
&& x1 <= (pos.x + width)
&& y1 <= (pos.y + height / 2)
&& pos.y >= pos.y - height / 2) {
result.add(uo);
}
}
return result;
}
