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3877ed73d0
Port lawnjelly's dynamic BVH implementation from 3.x to be used in both 2D and 3D broadphases. Removed alternative broadphase implementations which are not meant to be used anymore since they are much slower. Includes changes in Rect2, Vector2, Vector3 that help with the template implementation of the dynamic BVH by uniformizing the interface between 2D and 3D math. Co-authored-by: lawnjelly <lawnjelly@gmail.com>
63 lines
1.2 KiB
C++
63 lines
1.2 KiB
C++
public:
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// note .. maybe this can be attached to another node structure?
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// depends which works best for cache.
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struct ItemPairs {
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struct Link {
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void set(BVHHandle h, void *ud) {
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handle = h;
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userdata = ud;
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}
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BVHHandle handle;
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void *userdata;
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};
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void clear() {
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num_pairs = 0;
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extended_pairs.reset();
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expanded_aabb = Bounds();
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}
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Bounds expanded_aabb;
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// maybe we can just use the number in the vector TODO
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int32_t num_pairs;
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LocalVector<Link> extended_pairs;
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void add_pair_to(BVHHandle h, void *p_userdata) {
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Link temp;
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temp.set(h, p_userdata);
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extended_pairs.push_back(temp);
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num_pairs++;
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}
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uint32_t find_pair_to(BVHHandle h) const {
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for (int n = 0; n < num_pairs; n++) {
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if (extended_pairs[n].handle == h) {
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return n;
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}
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}
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return -1;
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}
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bool contains_pair_to(BVHHandle h) const {
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return find_pair_to(h) != BVHCommon::INVALID;
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}
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// return success
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void *remove_pair_to(BVHHandle h) {
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void *userdata = nullptr;
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for (int n = 0; n < num_pairs; n++) {
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if (extended_pairs[n].handle == h) {
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userdata = extended_pairs[n].userdata;
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extended_pairs.remove_unordered(n);
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num_pairs--;
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break;
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}
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}
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return userdata;
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}
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};
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