public boolean shouldBounceOffWall(double xd, double yd) {
if (bounceWallTime > 0) return false;
Tile nextTile =
level.getTile(
(int) (pos.x / Tile.WIDTH + Math.signum(xd)),
(int) (pos.y / Tile.HEIGHT + Math.signum(yd)));
boolean re = (nextTile != null && !nextTile.canPass(this));
if (re) bounceWallTime = 10;
return re;
}
public boolean isTargetBehindWall(double dx2, double dy2, Entity e) {
int x1 = (int) pos.x / Tile.WIDTH;
int y1 = (int) pos.y / Tile.HEIGHT;
int x2 = (int) dx2 / Tile.WIDTH;
int y2 = (int) dy2 / Tile.HEIGHT;
int dx, dy, inx, iny, a;
Tile temp;
Tile dTile1;
Tile dTile2;
dx = x2 - x1;
dy = y2 - y1;
inx = dx > 0 ? 1 : -1;
iny = dy > 0 ? 1 : -1;
dx = java.lang.Math.abs(dx);
dy = java.lang.Math.abs(dy);
if (dx >= dy) {
dy <<= 1;
a = dy - dx;
dx <<= 1;
while (x1 != x2) {
temp = level.getTile(x1, y1);
if (!temp.canPass(e)) {
return true;
}
if (a >= 0) {
dTile1 = level.getTile(x1 + inx, y1);
dTile2 = level.getTile(x1, y1 + iny);
if (!(dTile1.canPass(e) || dTile2.canPass(e))) {
return true;
}
y1 += iny;
a -= dx;
}
a += dy;
x1 += inx;
}
} else {
dx <<= 1;
a = dx - dy;
dy <<= 1;
while (y1 != y2) {
temp = level.getTile(x1, y1);
if (!temp.canPass(e)) {
return true;
}
if (a >= 0) {
dTile1 = level.getTile(x1 + inx, y1);
dTile2 = level.getTile(x1, y1 + iny);
if (!(dTile1.canPass(e) || dTile2.canPass(e))) {
return true;
}
x1 += inx;
a -= dy;
}
a += dx;
y1 += iny;
}
}
temp = level.getTile(x1, y1);
if (!temp.canPass(e)) {
return true;
}
return false;
}
