src/client/blockmesh.c

   1 #include "client/blockmesh.h"
   2 #include "client/client_map.h"
   3 #include "client/client_node.h"
   4 #include "client/cube.h"
   5
   6 static v3s8 fdir[6] = {
   7         {+0, +0, -1},
   8         {+0, +0, +1},
   9         {-1, +0, +0},
  10         {+1, +0, +0},
  11         {+0, -1, +0},
  12         {+0, +1, +0},
  13 };
  14
  15 static s32 half_block_size = MAPBLOCK_SIZE / 2;
  16
  17 static void make_vertices(Object *object, MapBlock *block)
  18 {
  19         v3s32 node_bp = {block->pos.x * MAPBLOCK_SIZE, block->pos.y * MAPBLOCK_SIZE, block->pos.z * MAPBLOCK_SIZE};
  20
  21         ITERATE_MAPBLOCK {
  22                 MapNode *node = &block->data[x][y][z];
  23                 ClientNodeDefintion *def = &client_node_definitions[node->type];
  24
  25                 if (def->visibility != NV_NONE) {
  26                         v3f32 offset = {x + (f32) MAPBLOCK_SIZE / 2.0f, y + (f32) MAPBLOCK_SIZE / 2.0f, z + (f32) MAPBLOCK_SIZE / 2.0f};
  27
  28                         for (int f = 0; f < 6; f++) {
  29                                 v3s8 npos = {
  30                                         x + fdir[f].x,
  31                                         y + fdir[f].y,
  32                                         z + fdir[f].z,
  33                                 };
  34
  35                                 Node neighbor;
  36
  37                                 if (npos.x >= 0 && npos.x < MAPBLOCK_SIZE && npos.y >= 0 && npos.y < MAPBLOCK_SIZE && npos.z >= 0 && npos.z < MAPBLOCK_SIZE)
  38                                         neighbor = block->data[npos.x][npos.y][npos.z].type;
  39                                 else {
  40                                         MapNode nn = map_get_node(client_map.map, (v3s32) {npos.x + node_bp.x, npos.y + node_bp.y, npos.z + node_bp.z});
  41                                         neighbor = nn.type;
  42                                 }
  43
  44                                 if (neighbor != NODE_UNLOADED && client_node_definitions[neighbor].visibility != NV_SOLID && (def->visibility != NV_TRANSPARENT || neighbor != node->type)) {
  45                                         object_set_texture(object, def->tiles.textures[f]);
  46
  47                                         for (int v = 0; v < 6; v++) {
  48                                                 Vertex3D vertex = cube_vertices[f][v];
  49                                                 vertex.position.x += offset.x;
  50                                                 vertex.position.y += offset.y;
  51                                                 vertex.position.z += offset.z;
  52
  53                                                 if (def->render)
  54                                                         def->render((v3s32) {x + node_bp.x, y + node_bp.y, z + node_bp.z}, node, &vertex, f, v);
  55
  56                                                 object_add_vertex(object, &vertex);
  57                                         }
  58                                 }
  59                         }
  60                 }
  61         }
  62 }
  63
  64 void blockmesh_make(MapBlock *block)
  65 {
  66         Object *obj = object_create();
  67
  68         obj->pos = (v3f32) {block->pos.x * MAPBLOCK_SIZE - half_block_size, block->pos.y * MAPBLOCK_SIZE - half_block_size, block->pos.z * MAPBLOCK_SIZE - half_block_size};
  69         obj->frustum_culling = true;
  70         obj->box = (aabb3f32) {{-half_block_size, -half_block_size, -half_block_size}, {half_block_size, half_block_size, half_block_size}};
  71
  72         make_vertices(obj, block);
  73
  74         if (! object_add_to_scene(obj)) {
  75                 object_delete(obj);
  76                 obj = NULL;
  77         }
  78
  79         MapBlockExtraData *extra = block->extra;
  80
  81         if (extra->obj)
  82                 extra->obj->remove = true;
  83
  84         extra->obj = obj;
  85 }