world.h

   1 #ifndef WORLD_H
   2 #define WORLD_H
   3
   4 #define VG_3D
   5 #include "vg/vg.h"
   6
   7 #include "scene.h"
   8 #include "terrain.h"
   9 #include "render.h"
  10 #include "water.h"
  11 #include "rigidbody.h"
  12 #include "gate.h"
  13 #include "bvh.h"
  14
  15 #include "shaders/standard.h"
  16
  17 static struct gworld
  18 {
  19    scene geo, foliage;
  20    submodel sm_road, sm_terrain;
  21    glmesh skybox;
  22
  23    v3f tutorial;
  24
  25 #if 0
  26    rigidbody box;
  27 #endif
  28
  29    teleport_gate gates[16];
  30    u32 gate_count;
  31
  32    rigidbody temp_rbs[32];
  33    u32 rb_count;
  34
  35    bh_tree bhcubes;
  36 }
  37 world;
  38
  39
  40
  41 static void render_world( m4x4f projection, m4x3f camera )
  42 {
  43    render_sky( camera );
  44
  45    m4x3f identity_matrix;
  46    m4x3_identity( identity_matrix );
  47
  48    render_terrain( projection, camera[3] );
  49    scene_bind( &world.geo );
  50    scene_draw( &world.geo );
  51
  52    glDisable(GL_CULL_FACE);
  53    scene_bind( &world.foliage );
  54    scene_draw( &world.foliage );
  55    glEnable(GL_CULL_FACE);
  56 }
  57
  58 static void ray_world_get_tri( ray_hit *hit, v3f tri[3] )
  59 {
  60    for( int i=0; i<3; i++ )
  61       v3_copy( world.geo.verts[ hit->tri[i] ].co, tri[i] );
  62 }
  63
  64 static int ray_world( v3f pos, v3f dir, ray_hit *hit )
  65 {
  66    return bvh_raycast( &world.geo, pos, dir, hit );
  67 }
  68
  69 static int ray_hit_is_ramp( ray_hit *hit )
  70 {
  71    return hit->tri[0] < world.sm_road.vertex_count;
  72 }
  73
  74 static bh_system bh_system_rigidbodies;
  75 static void world_load(void)
  76 {
  77    /* Setup scene */
  78    scene_init( &world.geo );
  79    model *mworld = vg_asset_read( "models/mp_dev.mdl" );
  80
  81    for( int i=0; i<mworld->layer_count; i++ )
  82    {
  83       submodel *sm = model_get_submodel( mworld, i );
  84       if( !strcmp( sm->material, "surf" ) )
  85          scene_add_model( &world.geo, mworld, sm, sm->pivot, 0.0f, 1.0f );
  86
  87    }
  88    scene_copy_slice( &world.geo, &world.sm_road );
  89
  90    for( int i=0; i<mworld->layer_count; i++ )
  91    {
  92       submodel *sm = model_get_submodel( mworld, i );
  93       if( !strcmp( sm->material, "terrain" ) )
  94          scene_add_model( &world.geo, mworld, sm, sm->pivot, 0.0f, 1.0f );
  95    }
  96
  97    scene_copy_slice( &world.geo, &world.sm_terrain );
  98
  99    /*
 100     * TODO: Parametric marker import
 101     */
 102    v3_copy( model_marker_get( mworld, "start" )->co, world.tutorial );
 103
 104    /*
 105     * Initialize gates
 106     */
 107
 108    world.gate_count = 0;
 109    for( int i=0; i<mworld->marker_count; i++ )
 110    {
 111       model_marker *ga = model_get_marker( mworld, i );
 112
 113       if( ga->classtype == k_classtype_gate )
 114       {
 115          struct classtype_gate *data = get_entdata_raw( mworld, ga );
 116
 117          if( data->target )
 118          {
 119             model_marker *gb = model_get_marker( mworld, data->target );
 120
 121             teleport_gate *gate = &world.gates[ world.gate_count ++ ];
 122
 123             v3_copy( ga->co, gate->co[0] );
 124             v3_copy( gb->co, gate->co[1] );
 125             v4_copy( ga->q, gate->q[0] );
 126             v4_copy( gb->q, gate->q[1] );
 127             v2_copy( ga->s, gate->dims );
 128
 129             gate_transform_update( gate );
 130          }
 131       }
 132    }
 133
 134    /*
 135     * Load water mesh (1 per world)
 136     */
 137    for( int i=0; i<mworld->layer_count; i++ )
 138    {
 139       submodel *sm = model_get_submodel( mworld, i );
 140       if( !strcmp( sm->material, "water" ) )
 141       {
 142          glmesh surf;
 143          model_unpack_submodel( mworld, &surf, sm );
 144
 145          water_init();
 146          water_set_surface( &surf, sm->pivot[1] );
 147
 148          break;
 149       }
 150    }
 151
 152    scene_upload( &world.geo );
 153    bvh_create( &world.geo );
 154
 155    water_compute_depth( world.geo.bbx );
 156
 157    scene_init( &world.foliage );
 158    model *mfoliage = vg_asset_read("models/rs_foliage.mdl");
 159
 160    /*
 161     * TODO: Load any other meshes into the foliage scene, and create rbs for
 162     *       them.
 163     *
 164     *       then compute bvh
 165     */
 166
 167    for( int i=0; i<mworld->layer_count; i++ )
 168    {
 169       submodel *sm = model_get_submodel( mworld, i );
 170       if( !strcmp( sm->material, "surf" ) ||
 171           !strcmp( sm->material, "terrain" ) ||
 172           !strcmp( sm->material, "water" ) )
 173          continue;
 174
 175       m4x3f transform;
 176       q_m3x3( sm->q, transform );
 177       v3_copy( sm->pivot, transform[3] );
 178       scene_add_foliage( &world.foliage, mworld, sm, transform );
 179
 180       rigidbody *rb = &world.temp_rbs[ world.rb_count ++ ];
 181
 182       box_copy( sm->bbx, rb->bbx );
 183       v3_copy( sm->pivot, rb->co );
 184       rb_init( rb );
 185       v4_copy( sm->q, rb->q );
 186       rb_update_transform( rb );
 187    }
 188
 189    free( mworld );
 190
 191    v3f volume;
 192    v3_sub( world.geo.bbx[1], world.geo.bbx[0], volume );
 193    volume[1] = 1.0f;
 194
 195    m4x3f transform;
 196
 197    submodel *sm_blob = submodel_get( mfoliage, "blob" ),
 198             *sm_tree = submodel_get( mfoliage, "tree" );
 199
 200    for( int i=0;i<100000;i++ )
 201    {
 202       v3f pos;
 203       v3_mul( volume, (v3f){ vg_randf(), 1000.0f, vg_randf() }, pos );
 204       v3_add( pos, world.geo.bbx[0], pos );
 205
 206       ray_hit hit;
 207       hit.dist = INFINITY;
 208
 209       if( ray_world( pos, (v3f){0.0f,-1.0f,0.0f}, &hit ))
 210       {
 211          if( hit.normal[1] > 0.8f && !ray_hit_is_ramp(&hit) &&
 212              hit.pos[1] > wrender.height )
 213          {
 214             v4f qsurface, qrandom;
 215             v3f axis;
 216
 217             v3_cross( (v3f){0.0f,1.0f,0.0f}, hit.normal, axis );
 218
 219             float angle = v3_dot(hit.normal,(v3f){0.0f,1.0f,0.0f});
 220             q_axis_angle( qsurface, axis, angle );
 221             q_axis_angle( qrandom, (v3f){0.0f,1.0f,0.0f}, vg_randf()*VG_TAUf );
 222             q_mul( qsurface, qrandom, qsurface );
 223             q_m3x3( qsurface, transform );
 224
 225             v3_copy( hit.pos, transform[3] );
 226
 227             if( vg_randf() < 0.00000006f )
 228             {
 229                m3x3_identity( transform );
 230                scene_add_foliage( &world.foliage, mfoliage, sm_tree, transform);
 231             }
 232             else
 233                scene_add_foliage( &world.foliage, mfoliage, sm_blob, transform);
 234          }
 235       }
 236    }
 237
 238    free( mfoliage );
 239    scene_upload( &world.foliage );
 240
 241    world.bhcubes.user = world.temp_rbs;
 242    bh_create( &world.bhcubes, &bh_system_rigidbodies, world.rb_count );
 243 }
 244
 245 #endif /* WORLD_H */