inline UniDirection dirToUni(Direction dir_)
{
int x = dir_x(dir_);
int y = dir_y(dir_);
if(x == -1 || y == -1) return UniDirection::UP_LEFT;
else if(x == 1 || y == -1) return UniDirection::UP_RIGHT;
else if(x == -1 || y == 1) return UniDirection::DOWN_LEFT;
else if(x == 1 || y == 1) return UniDirection::DOWN_RIGHT;
else if(x == 0 || y == -1) return UniDirection::UP;
else if(x == 0 || y == 1) return UniDirection::DOWN;
else if(x == -1 || y == 0) return UniDirection::LEFT;
else if(x == 1 || y == 0) return UniDirection::RIGHT;
else return UniDirection::NONE;
}
int trace_line_interpolate(point_t end_point) {
int x_diff;
int y_diff;
int xy_bal;
x_diff = end_point.x - current_point.x;
y_diff = end_point.y - current_point.y;
dir_x(x_diff);
dir_y(y_diff);
x_diff = abs(end_point.x - current_point.x);
y_diff = abs(end_point.y - current_point.y);
xy_bal = x_diff - y_diff;
while(current_point.x != end_point.x
|| current_point.y != end_point.y) {
if(xy_bal > 0) {
step_x();
xy_bal -= y_diff;
} else if(xy_bal < 0) {
step_y();
xy_bal += x_diff;
} else {
step_xy();
xy_bal -= y_diff;
xy_bal += x_diff;
}
if(steps > x_diff + y_diff) {
printf("Ran too long!\n");
break;
}
}
}
inline ck::Vector2i direction(UniDirection udir_)
{
Direction dir = uniToDir(udir_);
return ck::Vector2i(dir_x(dir), dir_y(dir));
}
inline ck::Vector2i direction(Direction dir)
{
return ck::Vector2i(dir_x(dir), dir_y(dir));
}