void ofxPolygonMask::checkWinding() {
if(points.size()<3) return;
ofVec2f a = points[1] - points[0];
ofVec2f b = points[2] - points[0];
float z = (a.x*b.y) - (a.y*b.x);
// if the z of the cross product is negative, we need to reverse the winding
if(z<0) {
flipDirection();
}
}
void Enemy::patrol(float dt) {
float delta_x = speed_x * dt;
float delta_y = speed_y * dt;
int check_pos = 12;
if(facing_direction == Facing::Left) check_pos = -check_pos;
if(move(delta_x, delta_y)) {
// Turn around if you run into something.
//cout << "obstructed\n";
flipDirection();
} /*else if(!game_map->isSolid(int(pos_x + check_pos), int(pos_y + yOrigin + 1))) {
// Turn around if there's a pit up ahead.
//cout << "pit\n";
//debugPixel.SetPosition(
// 0.5f + (int)(pos_x - game_map->cam_x),
// 0.5f + (int)(pos_y - game_map->cam_y));
//checkGround = true;
flipDirection();
}*/
}
