world.h

   1 #include "common.h"
   2
   3 static int ray_world( v3f pos, v3f dir, ray_hit *hit );
   4
   5 #ifndef WORLD_H
   6 #define WORLD_H
   7
   8 #include "scene.h"
   9 #include "terrain.h"
  10 #include "render.h"
  11 #include "water.h"
  12 #include "rigidbody.h"
  13 #include "gate.h"
  14 #include "bvh.h"
  15
  16 #include "shaders/standard.h"
  17
  18 static struct gworld
  19 {
  20    scene geo, foliage;
  21    submodel sm_road, sm_terrain;
  22    glmesh skybox;
  23
  24    v3f tutorial;
  25
  26    teleport_gate gates[16];
  27    u32 gate_count;
  28
  29    rigidbody temp_rbs[32];
  30    u32 rb_count;
  31
  32    bh_tree bhcubes;
  33 }
  34 world;
  35
  36 static void render_world( m4x4f projection, m4x3f camera )
  37 {
  38    render_sky( camera );
  39
  40    m4x3f identity_matrix;
  41    m4x3_identity( identity_matrix );
  42
  43    render_terrain( projection, camera[3] );
  44    scene_bind( &world.geo );
  45    scene_draw( &world.geo );
  46
  47    glDisable(GL_CULL_FACE);
  48    scene_bind( &world.foliage );
  49    scene_draw( &world.foliage );
  50    glEnable(GL_CULL_FACE);
  51 }
  52
  53 static void ray_world_get_tri( ray_hit *hit, v3f tri[3] )
  54 {
  55    for( int i=0; i<3; i++ )
  56       v3_copy( world.geo.verts[ hit->tri[i] ].co, tri[i] );
  57 }
  58
  59 static int ray_world( v3f pos, v3f dir, ray_hit *hit )
  60 {
  61    return scene_raycast( &world.geo, pos, dir, hit );
  62 }
  63
  64 static int ray_hit_is_ramp( ray_hit *hit )
  65 {
  66    return hit->tri[0] < world.sm_road.vertex_count;
  67 }
  68
  69 static void world_load(void)
  70 {
  71    /* Setup scene */
  72    scene_init( &world.geo );
  73    model *mworld = vg_asset_read( "models/mp_dev.mdl" );
  74
  75    for( int i=0; i<mworld->layer_count; i++ )
  76    {
  77       submodel *sm = model_get_submodel( mworld, i );
  78       if( !strcmp( sm->material, "surf" ) )
  79          scene_add_model( &world.geo, mworld, sm, sm->pivot, 0.0f, 1.0f );
  80
  81    }
  82    scene_copy_slice( &world.geo, &world.sm_road );
  83
  84    for( int i=0; i<mworld->layer_count; i++ )
  85    {
  86       submodel *sm = model_get_submodel( mworld, i );
  87       if( !strcmp( sm->material, "terrain" ) )
  88          scene_add_model( &world.geo, mworld, sm, sm->pivot, 0.0f, 1.0f );
  89    }
  90
  91    scene_copy_slice( &world.geo, &world.sm_terrain );
  92
  93    /*
  94     * TODO: Parametric marker import
  95     */
  96    v3_copy( model_marker_get( mworld, "start" )->co, world.tutorial );
  97
  98    /*
  99     * Initialize gates
 100     */
 101
 102    world.gate_count = 0;
 103    for( int i=0; i<mworld->marker_count; i++ )
 104    {
 105       model_marker *ga = model_get_marker( mworld, i );
 106
 107       if( ga->classtype == k_classtype_gate )
 108       {
 109          struct classtype_gate *data = get_entdata_raw( mworld, ga );
 110
 111          if( data->target )
 112          {
 113             model_marker *gb = model_get_marker( mworld, data->target );
 114
 115             teleport_gate *gate = &world.gates[ world.gate_count ++ ];
 116
 117             v3_copy( ga->co, gate->co[0] );
 118             v3_copy( gb->co, gate->co[1] );
 119             v4_copy( ga->q, gate->q[0] );
 120             v4_copy( gb->q, gate->q[1] );
 121             v2_copy( ga->s, gate->dims );
 122
 123             gate_transform_update( gate );
 124          }
 125       }
 126    }
 127
 128    /*
 129     * Load water mesh (1 per world)
 130     */
 131    for( int i=0; i<mworld->layer_count; i++ )
 132    {
 133       submodel *sm = model_get_submodel( mworld, i );
 134       if( !strcmp( sm->material, "water" ) )
 135       {
 136          glmesh surf;
 137          model_unpack_submodel( mworld, &surf, sm );
 138
 139          water_init();
 140          water_set_surface( &surf, sm->pivot[1] );
 141
 142          break;
 143       }
 144    }
 145
 146    scene_upload( &world.geo );
 147    scene_bh_create( &world.geo );
 148
 149    water_compute_depth( world.geo.bbx );
 150
 151    scene_init( &world.foliage );
 152    model *mfoliage = vg_asset_read("models/rs_foliage.mdl");
 153
 154    /*
 155     * TODO: Load any other meshes into the foliage scene, and create rbs for
 156     *       them.
 157     *
 158     *       then compute bvh
 159     */
 160
 161    for( int i=0; i<mworld->layer_count; i++ )
 162    {
 163       submodel *sm = model_get_submodel( mworld, i );
 164       if( !strcmp( sm->material, "surf" ) ||
 165           !strcmp( sm->material, "terrain" ) ||
 166           !strcmp( sm->material, "water" ) )
 167          continue;
 168
 169       m4x3f transform;
 170       q_m3x3( sm->q, transform );
 171       v3_copy( sm->pivot, transform[3] );
 172       scene_add_foliage( &world.foliage, mworld, sm, transform );
 173
 174       rigidbody *rb = &world.temp_rbs[ world.rb_count ++ ];
 175
 176       box_copy( sm->bbx, rb->bbx );
 177       v3_copy( sm->pivot, rb->co );
 178       rb_init( rb );
 179       v4_copy( sm->q, rb->q );
 180       rb_update_transform( rb );
 181    }
 182
 183    free( mworld );
 184
 185    v3f volume;
 186    v3_sub( world.geo.bbx[1], world.geo.bbx[0], volume );
 187    volume[1] = 1.0f;
 188
 189    m4x3f transform;
 190
 191    submodel *sm_blob = submodel_get( mfoliage, "blob" ),
 192             *sm_tree = submodel_get( mfoliage, "tree" );
 193
 194    for( int i=0;i<100000;i++ )
 195    {
 196       v3f pos;
 197       v3_mul( volume, (v3f){ vg_randf(), 1000.0f, vg_randf() }, pos );
 198       v3_add( pos, world.geo.bbx[0], pos );
 199
 200       ray_hit hit;
 201       hit.dist = INFINITY;
 202
 203       if( ray_world( pos, (v3f){0.0f,-1.0f,0.0f}, &hit ))
 204       {
 205          if( hit.normal[1] > 0.8f && !ray_hit_is_ramp(&hit) &&
 206              hit.pos[1] > water_height()+10.0f )
 207          {
 208             v4f qsurface, qrandom;
 209             v3f axis;
 210
 211             v3_cross( (v3f){0.0f,1.0f,0.0f}, hit.normal, axis );
 212
 213             float angle = v3_dot(hit.normal,(v3f){0.0f,1.0f,0.0f});
 214             q_axis_angle( qsurface, axis, angle );
 215             q_axis_angle( qrandom, (v3f){0.0f,1.0f,0.0f}, vg_randf()*VG_TAUf );
 216             q_mul( qsurface, qrandom, qsurface );
 217             q_m3x3( qsurface, transform );
 218
 219             v3_copy( hit.pos, transform[3] );
 220
 221             if( vg_randf() < 0.0006f )
 222             {
 223                m3x3_identity( transform );
 224                scene_add_foliage( &world.foliage, mfoliage, sm_tree, transform);
 225             }
 226             else
 227                scene_add_foliage( &world.foliage, mfoliage, sm_blob, transform);
 228          }
 229       }
 230    }
 231
 232    free( mfoliage );
 233    scene_upload( &world.foliage );
 234
 235    bh_create( &world.bhcubes,
 236          &bh_system_rigidbodies, world.temp_rbs, world.rb_count );
 237 }
 238
 239 #endif /* WORLD_H */