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Raycast: export exact pointing location (#6304)

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* Return intersection point in node coordinates.
* Clarify 'intersection_point' documentation
This commit is contained in:
Dániel Juhász 2018-08-16 20:10:08 +02:00 • committed by SmallJoker
parent 798724efea
commit 325bf68041
9 changed files with 63 additions and 17 deletions
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14
src/environment.cpp
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@ -175,12 +175,12 @@ void Environment::continueRaycast(RaycastState *state, PointedThing *result)
bool is_colliding = false;
// Minimal distance of all collisions
float min_distance_sq = 10000000;
// ID of the current box (loop counter)
u16 id = 0;
v3f npf = intToFloat(np, BS);
for (std::vector<aabb3f>::const_iterator i = boxes.begin();
i != boxes.end(); ++i) {
// Get current collision box
aabb3f box = *i;
// This loop translates the boxes to their in-world place.
for (aabb3f &box : boxes) {
box.MinEdge += npf;
box.MaxEdge += npf;
@ -188,8 +188,10 @@ void Environment::continueRaycast(RaycastState *state, PointedThing *result)
v3s16 intersection_normal;
if (!boxLineCollision(box, state->m_shootline.start,
state->m_shootline.getVector(), &intersection_point,
&intersection_normal))
&intersection_normal)) {
++id;
continue;
}
f32 distanceSq = (intersection_point
- state->m_shootline.start).getLengthSQ();
@ -198,9 +200,11 @@ void Environment::continueRaycast(RaycastState *state, PointedThing *result)
min_distance_sq = distanceSq;
result.intersection_point = intersection_point;
result.intersection_normal = intersection_normal;
result.box_id = id;
found_boxcenter = box.getCenter();
is_colliding = true;
}
++id;
}
// If there wasn't a collision, stop
if (!is_colliding) {