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