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#include <cstdlib> |
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|
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#include "oct.h" |
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#include "entity.h" |
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|
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octant world(0, 0); |
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|
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octant::octant (octant *parent, int subindex) |
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: parent(parent) |
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{ |
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for (fill = 8; fill--; ) |
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sub[fill] = 0; |
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|
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if (parent) |
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{ |
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extent = (parent->extent + 1) >> 1; |
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orig = parent->orig; |
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orig.offset (subindex, extent); |
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} |
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else |
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{ |
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extent = MAXEXTENT; |
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orig.x = orig.y = orig.z = SOFFS_MIN; |
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} |
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} |
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|
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octant::~octant () |
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{ |
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for (fill = 8; fill--; ) |
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delete sub[fill]; |
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} |
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|
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static bool overlap (const sector &o1, uoffs ea, const sector &o2, const box &bbox) |
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{ |
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sector a2; |
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|
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ea /= 2; |
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|
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a2.x = o1.x + ea; |
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a2.y = o1.y + ea; |
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a2.z = o1.z + ea; |
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|
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sector b2; |
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sector eb; |
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|
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b2.x = o2.x + (soffs)bbox.a.x; |
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b2.y = o2.y + (soffs)bbox.a.y; |
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b2.z = o2.z + (soffs)bbox.a.z; |
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|
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eb.x = (soffs)(bbox.b.x - bbox.a.x) / 2; |
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eb.y = (soffs)(bbox.b.y - bbox.a.y) / 2; |
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eb.z = (soffs)(bbox.b.z - bbox.a.z) / 2; |
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|
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b2.x += eb.x; |
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b2.y += eb.y; |
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b2.z += eb.z; |
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|
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return abs (a2.x - b2.x) <= ea + eb.x |
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&& abs (a2.y - b2.y) <= ea + eb.y |
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&& abs (a2.z - b2.z) <= ea + eb.z; |
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} |
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|
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void octant::add (const sector &sec, entity_base *e) |
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{ |
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printf ("OCTANT %d,%d,%d+%d\n", orig.x, orig.y, orig.z, extent); |
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|
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if (overlap (orig, extent, sec, e->bbox)) |
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{ |
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printf ("overlap, add\n"); |
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push_back (e); |
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e->o.push_back (this); |
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|
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#if 0 |
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uoffs extent2 = extent / 2; |
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for (int si = 8; i--; ) |
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{ |
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sector sub = orig; |
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sub.offset (si, extent2); |
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if (overlap (sub, extent2, sec, e->bbox)) |
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{ |
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} |
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#endif |
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} |
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else |
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printf ("no overlap\n"); |
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} |
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|
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void octant::remove (entity_base *e) |
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{ |
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} |
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|
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void octant::draw (draw_context &ctx) |
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{ |
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for (iterator i = end (); i-- != begin (); ) |
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(*i)->display (ctx); |
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} |
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