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Updated BoundingBox collision detections

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This commit is contained in:
raysan5 2016-03-01 20:54:02 +01:00
parent 6106ab8a2e
commit 4011c13d4b
3 changed files with 46 additions and 52 deletions
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48
src/models.c
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@ -1244,14 +1244,14 @@ bool CheckCollisionSpheres(Vector3 centerA, float radiusA, Vector3 centerB, floa
// Detect collision between two boxes
// NOTE: Boxes are defined by two points minimum and maximum
bool CheckCollisionBoxes(Vector3 minBBox1, Vector3 maxBBox1, Vector3 minBBox2, Vector3 maxBBox2)
bool CheckCollisionBoxes(BoundingBox box1, BoundingBox box2)
{
bool collision = true;
if ((maxBBox1.x >= minBBox2.x) && (minBBox1.x <= maxBBox2.x))
if ((box1.max.x >= box2.min.x) && (box1.min.x <= box2.max.x))
{
if ((maxBBox1.y < minBBox2.y) || (minBBox1.y > maxBBox2.y)) collision = false;
if ((maxBBox1.z < minBBox2.z) || (minBBox1.z > maxBBox2.z)) collision = false;
if ((box1.max.y < box2.min.y) || (box1.min.y > box2.max.y)) collision = false;
if ((box1.max.z < box2.min.z) || (box1.min.z > box2.max.z)) collision = false;
}
else collision = false;
@ -1259,30 +1259,22 @@ bool CheckCollisionBoxes(Vector3 minBBox1, Vector3 maxBBox1, Vector3 minBBox2, V
}
// Detect collision between box and sphere
bool CheckCollisionBoxSphere(Vector3 minBBox, Vector3 maxBBox, Vector3 centerSphere, float radiusSphere)
bool CheckCollisionBoxSphere(BoundingBox box, Vector3 centerSphere, float radiusSphere)
{
bool collision = false;
if ((centerSphere.x - minBBox.x > radiusSphere) && (centerSphere.y - minBBox.y > radiusSphere) && (centerSphere.z - minBBox.z > radiusSphere) &&
(maxBBox.x - centerSphere.x > radiusSphere) && (maxBBox.y - centerSphere.y > radiusSphere) && (maxBBox.z - centerSphere.z > radiusSphere))
{
collision = true;
}
else
{
float dmin = 0;
float dmin = 0;
if (centerSphere.x - minBBox.x <= radiusSphere) dmin += (centerSphere.x - minBBox.x)*(centerSphere.x - minBBox.x);
else if (maxBBox.x - centerSphere.x <= radiusSphere) dmin += (centerSphere.x - maxBBox.x)*(centerSphere.x - maxBBox.x);
if (centerSphere.x < box.min.x) dmin += pow(centerSphere.x - box.min.x, 2);
else if (centerSphere.x > box.max.x) dmin += pow(centerSphere.x - box.max.x, 2);
if (centerSphere.y - minBBox.y <= radiusSphere) dmin += (centerSphere.y - minBBox.y)*(centerSphere.y - minBBox.y);
else if (maxBBox.y - centerSphere.y <= radiusSphere) dmin += (centerSphere.y - maxBBox.y)*(centerSphere.y - maxBBox.y);
if (centerSphere.y < box.min.y) dmin += pow(centerSphere.y - box.min.y, 2);
else if (centerSphere.y > box.max.y) dmin += pow(centerSphere.y - box.max.y, 2);
if (centerSphere.z - minBBox.z <= radiusSphere) dmin += (centerSphere.z - minBBox.z)*(centerSphere.z - minBBox.z);
else if (maxBBox.z - centerSphere.z <= radiusSphere) dmin += (centerSphere.z - maxBBox.z)*(centerSphere.z - maxBBox.z);
if (centerSphere.z < box.min.z) dmin += pow(centerSphere.z - box.min.z, 2);
else if (centerSphere.z > box.max.z) dmin += pow(centerSphere.z - box.max.z, 2);
if (dmin <= radiusSphere*radiusSphere) collision = true;
}
if (dmin <= (radiusSphere*radiusSphere)) collision = true;
return collision;
}
@ -1333,17 +1325,17 @@ bool CheckCollisionRaySphereEx(Ray ray, Vector3 spherePosition, float sphereRadi
}
// Detect collision between ray and bounding box
bool CheckCollisionRayBox(Ray ray, Vector3 minBBox, Vector3 maxBBox)
bool CheckCollisionRayBox(Ray ray, BoundingBox box)
{
bool collision = false;
float t[8];
t[0] = (minBBox.x - ray.position.x)/ray.direction.x;
t[1] = (maxBBox.x - ray.position.x)/ray.direction.x;
t[2] = (minBBox.y - ray.position.y)/ray.direction.y;
t[3] = (maxBBox.y - ray.position.y)/ray.direction.y;
t[4] = (minBBox.z - ray.position.z)/ray.direction.z;
t[5] = (maxBBox.z - ray.position.z)/ray.direction.z;
t[0] = (box.min.x - ray.position.x)/ray.direction.x;
t[1] = (box.max.x - ray.position.x)/ray.direction.x;
t[2] = (box.min.y - ray.position.y)/ray.direction.y;
t[3] = (box.max.y - ray.position.y)/ray.direction.y;
t[4] = (box.min.z - ray.position.z)/ray.direction.z;
t[5] = (box.max.z - ray.position.z)/ray.direction.z;
t[6] = fmax(fmax(fmin(t[0], t[1]), fmin(t[2], t[3])), fmin(t[4], t[5]));
t[7] = fmin(fmin(fmax(t[0], t[1]), fmax(t[2], t[3])), fmax(t[4], t[5]));