/*==========================================
* is ranged attack from (x0,y0) to (x1,y1) possible?
*------------------------------------------*/
public static bool SearchLongPath(ShootpathData spd, Map m, int x0, int y0, int x1, int y1, ECollisionType cell) {
int dx, dy;
int wx = 0, wy = 0;
int weight;
if (spd == null)
spd = new ShootpathData(); // use dummy output variable
dx = (x1 - x0);
if (dx < 0) {
x0 = x0.Swap(ref x1);
y0 = y0.Swap(ref y1);
dx = -dx;
}
dy = (y1 - y0);
spd.rx = spd.ry = 0;
spd.len = 1;
spd.x[0] = x0;
spd.y[0] = y0;
if (m.CheckCell(x1, y1, cell))
return false;
if (dx > Math.Abs(dy)) {
weight = dx;
spd.ry = 1;
} else {
weight = Math.Abs(y1 - y0);
spd.rx = 1;
}
while (x0 != x1 || y0 != y1) {
if (m.CheckCell(x0, y0, cell))
return false;
wx += dx;
wy += dy;
if (wx >= weight) {
wx -= weight;
x0++;
}
if (wy >= weight) {
wy -= weight;
y0++;
} else if (wy < 0) {
wy += weight;
y0--;
}
if (spd.len < MAX_WALKPATH) {
spd.x[spd.len] = x0;
spd.y[spd.len] = y0;
spd.len++;
}
}
return true;
}
/*==========================================
* is ranged attack from (x0,y0) to (x1,y1) possible?
*------------------------------------------*/
public static bool SearchLongPath(ShootpathData spd, Map m, int x0, int y0, int x1, int y1, ECollisionType cell)
{
int dx, dy;
int wx = 0, wy = 0;
int weight;
if (spd == null)
{
spd = new ShootpathData(); // use dummy output variable
}
dx = (x1 - x0);
if (dx < 0)
{
x0 = x0.Swap(ref x1);
y0 = y0.Swap(ref y1);
dx = -dx;
}
dy = (y1 - y0);
spd.rx = spd.ry = 0;
spd.len = 1;
spd.x[0] = x0;
spd.y[0] = y0;
if (m.CheckCell(x1, y1, cell))
{
return(false);
}
if (dx > Math.Abs(dy))
{
weight = dx;
spd.ry = 1;
}
else
{
weight = Math.Abs(y1 - y0);
spd.rx = 1;
}
while (x0 != x1 || y0 != y1)
{
if (m.CheckCell(x0, y0, cell))
{
return(false);
}
wx += dx;
wy += dy;
if (wx >= weight)
{
wx -= weight;
x0++;
}
if (wy >= weight)
{
wy -= weight;
y0++;
}
else if (wy < 0)
{
wy += weight;
y0--;
}
if (spd.len < MAX_WALKPATH)
{
spd.x[spd.len] = x0;
spd.y[spd.len] = y0;
spd.len++;
}
}
return(true);
}
