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, bool hide_edges)
  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 - half_block_size - 0.5, y - half_block_size - 0.5, z - half_block_size - 0.5};
  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 if (hide_edges) {
  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                                 } else {
  43                                         neighbor = NODE_AIR;
  44                                 }
  45
  46                                 if (neighbor != NODE_UNLOADED && client_node_definitions[neighbor].visibility != NV_SOLID && (def->visibility != NV_TRANSPARENT || neighbor != node->type)) {
  47                                         object_set_texture(object, def->tiles.textures[f]);
  48
  49                                         for (int v = 0; v < 6; v++) {
  50                                                 Vertex3D vertex = cube_vertices[f][v];
  51                                                 vertex.position.x += offset.x;
  52                                                 vertex.position.y += offset.y;
  53                                                 vertex.position.z += offset.z;
  54
  55                                                 if (def->render)
  56                                                         def->render((v3s32) {x + node_bp.x, y + node_bp.y, z + node_bp.z}, node, &vertex, f, v);
  57
  58                                                 object_add_vertex(object, &vertex);
  59                                         }
  60                                 }
  61                         }
  62                 }
  63         }
  64 }
  65
  66 static void animate_mapblock_mesh(Object *obj, f64 dtime)
  67 {
  68         obj->scale.x += dtime * 2.0;
  69
  70         if (obj->scale.x > 1.0f) {
  71                 obj->scale.x = 1.0f;
  72                 client_map_schedule_update_block_mesh(obj->extra);
  73         }
  74
  75         obj->scale.z = obj->scale.y = obj->scale.x;
  76
  77         object_transform(obj);
  78 }
  79
  80 void blockmesh_make(MapBlock *block)
  81 {
  82         MapBlockExtraData *extra = block->extra;
  83
  84         Object *obj = object_create();
  85
  86         obj->pos = (v3f32) {block->pos.x * MAPBLOCK_SIZE + half_block_size + 0.5f, block->pos.y * MAPBLOCK_SIZE + half_block_size + 0.5f, block->pos.z * MAPBLOCK_SIZE + half_block_size + 0.5f};
  87         obj->scale = extra->obj ? extra->obj->scale : (v3f32) {0.1f, 0.1f, 0.1f};
  88         obj->frustum_culling = false;
  89         obj->box = (aabb3f32) {{-half_block_size, -half_block_size, -half_block_size}, {half_block_size, half_block_size, half_block_size}};
  90         obj->on_render = (obj->scale.x == 1.0f) ? NULL : &animate_mapblock_mesh;
  91         obj->extra = block;
  92
  93         make_vertices(obj, block, obj->scale.x == 1.0f);
  94
  95         if (! object_add_to_scene(obj)) {
  96                 object_delete(obj);
  97                 obj = NULL;
  98         }
  99
 100         if (extra->obj)
 101                 extra->obj->remove = true;
 102
 103         extra->obj = obj;
 104 }