X-Git-Url: https://harrygodden.com/git/?a=blobdiff_plain;f=world_gen.h;h=96928b60bd166b05fb58c52810b43f6f83b4a130;hb=777083e1f715a26d3f68be4ba5bdf2cbcaa84a05;hp=147c9af489eb2be321b6f40249e65d4ff1fa3671;hpb=6d98c1e42c1617a8a426f9f0c0df99b75725b486;p=carveJwlIkooP6JGAAIwe30JlM.git

diff --git a/world_gen.h b/world_gen.h
index 147c9af..96928b6 100644
--- a/world_gen.h
+++ b/world_gen.h
@@ -306,6 +306,102 @@ VG_STATIC void world_entities_process(void)
    }
 }
 
+VG_STATIC void edge_bh_expand_bound( void *user, boxf bound, u32 item_index )
+{
+   struct grind_edge *edge_array = user,
+                     *edge = &edge_array[ item_index ];
+   
+  box_addpt( bound, edge->p0 );
+  box_addpt( bound, edge->p1 );
+}
+
+VG_STATIC float edge_bh_centroid( void *user, u32 item_index, int axis )
+{
+   struct grind_edge *edge_array = user,
+                     *edge = &edge_array[ item_index ];
+
+   return (edge->p0[axis] + edge->p1[axis]) * 0.5f;
+}
+
+VG_STATIC void edge_bh_swap( void *user, u32 ia, u32 ib )
+{
+   struct grind_edge *edge_array = user,
+                     *e0 = &edge_array[ ia ],
+                     *e1 = &edge_array[ ib ],
+                      et;
+   et = *e0;
+   *e0 = *e1;
+   *e1 = et;
+}
+
+VG_STATIC void edge_bh_closest( void *user, u32 index, v3f point, v3f closest )
+{
+   struct grind_edge *edge_array = user,
+                     *edge = &edge_array[ index ];
+   
+   closest_point_segment( edge->p0, edge->p1, point, closest );
+}
+
+VG_STATIC bh_system bh_system_edges =
+{
+   .expand_bound = edge_bh_expand_bound,
+   .item_centroid = edge_bh_centroid,
+   .item_closest = edge_bh_closest,
+   .item_swap = edge_bh_swap,
+   .item_debug = NULL,
+   .cast_ray = NULL
+};
+
+VG_STATIC void world_generate_edges(void)
+{
+   vg_info( "Generating edge array\n" );
+   world.grind_edges = vg_linear_alloc( world.dynamic_vgl, 
+                                        5000*sizeof(struct grind_edge ) );
+   world.grind_edge_count = 0;
+
+   u32 fs_count = 0;
+   for( u32 i=0; i<world.scene_geo->vertex_count; i++ )
+      if( world.scene_geo->arrvertices[i].weights[0] )
+         fs_count ++;
+
+   vg_info( "Grind verts: %u\n", fs_count );
+
+   for( u32 i=0; i<world.scene_geo->indice_count/3; i++ )
+   {
+      u32 *ptri = &world.scene_geo->arrindices[ i*3 ];
+
+      for( int j=0; j<3; j++ )
+      {
+         u32 i0 = ptri[j],
+             i1 = ptri[(j+1)%3];
+
+         mdl_vert *v0 = &world.scene_geo->arrvertices[ i0 ],
+                  *v1 = &world.scene_geo->arrvertices[ i1 ];
+
+         if( v0->weights[0] )
+         {
+            if( world.grind_edge_count == 5000 )
+               vg_fatal_exit_loop( "Edge capacity exceeded" );
+
+            struct grind_edge *ge = 
+               &world.grind_edges[ world.grind_edge_count ++ ];
+
+            v3_copy( v0->co, ge->p0 );
+            v3_copy( v1->co, ge->p1 );
+         }
+      }
+   }
+
+   vg_info( "Grind edge count: %u\n", world.grind_edge_count );
+
+   world.grind_edges = vg_linear_resize( world.dynamic_vgl, world.grind_edges,
+                           world.grind_edge_count*sizeof(struct grind_edge) );
+
+   world.grind_bh = bh_create( world.dynamic_vgl, &bh_system_edges, 
+                               world.grind_edges, world.grind_edge_count, 
+                               2 );
+}
+
 VG_STATIC void world_generate(void)
 {
    /* 
@@ -397,6 +493,8 @@ VG_STATIC void world_generate(void)
 
    vg_linear_del( world.dynamic_vgl, world.scene_no_collide );
    world.scene_no_collide = NULL;
+
+   world_generate_edges();
 }
 
 VG_STATIC int reset_player( int argc, char const *argv[] );
@@ -600,7 +698,10 @@ VG_STATIC void world_unload(void)
    world.scene_geo = NULL;
    world.scene_no_collide = NULL;
    world.scene_lines = NULL;
+   world.grind_edges = NULL;
+   world.grind_edge_count = 0;
 
+   world.grind_bh = NULL;
    world.geo_bh = NULL;
    world.trigger_bh = NULL;
    world.audio_bh = NULL;