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
  12 #include "shaders/standard.h"
  13
  14 static struct gworld
  15 {
  16    scene geo, foliage;
  17    submodel sm_road, sm_terrain;
  18    glmesh skybox;
  19
  20    v3f tutorial;
  21 }
  22 world;
  23
  24 static void render_world( m4x4f projection, m4x3f camera )
  25 {
  26    render_sky( camera );
  27
  28    m4x3f identity_matrix;
  29    m4x3_identity( identity_matrix );
  30
  31    render_terrain( projection, camera[3] );
  32    scene_bind( &world.geo );
  33    scene_draw( &world.geo );
  34
  35    glDisable(GL_CULL_FACE);
  36    scene_bind( &world.foliage );
  37    scene_draw( &world.foliage );
  38    glEnable(GL_CULL_FACE);
  39
  40    vg_line_boxf( world.geo.bbx, 0xff00ffff );
  41 }
  42
  43 static void ray_world_get_tri( ray_hit *hit, v3f tri[3] )
  44 {
  45    for( int i=0; i<3; i++ )
  46       v3_copy( world.geo.verts[ hit->tri[i] ].co, tri[i] );
  47 }
  48
  49 static int ray_world( v3f pos, v3f dir, ray_hit *hit )
  50 {
  51    return bvh_raycast( &world.geo, pos, dir, hit );
  52 }
  53
  54 static int ray_hit_is_ramp( ray_hit *hit )
  55 {
  56    return hit->tri[0] < world.sm_road.vertex_count;
  57 }
  58
  59 static void world_load(void)
  60 {
  61    /* Setup scene */
  62    scene_init( &world.geo );
  63    model *mworld = vg_asset_read( "models/mp_dev.mdl" );
  64
  65    for( int i=0; i<mworld->layer_count; i++ )
  66    {
  67       submodel *sm = model_get_submodel( mworld, i );
  68       if( !strcmp( sm->material, "surf" ) )
  69          scene_add_model( &world.geo, mworld, sm, sm->pivot, 0.0f, 1.0f );
  70
  71    }
  72    scene_copy_slice( &world.geo, &world.sm_road );
  73
  74    for( int i=0; i<mworld->layer_count; i++ )
  75    {
  76       submodel *sm = model_get_submodel( mworld, i );
  77       if( !strcmp( sm->material, "terrain" ) )
  78          scene_add_model( &world.geo, mworld, sm, sm->pivot, 0.0f, 1.0f );
  79    }
  80
  81    scene_copy_slice( &world.geo, &world.sm_terrain );
  82
  83    /*
  84     * TODO: Parametric marker import
  85     */
  86    v3_copy( model_marker_get( mworld, "mp_dev_tutorial" )->co, world.tutorial );
  87
  88
  89    /* GATE DEV */
  90 #if 0
  91    {
  92       model_marker *ga = model_marker_get(mworld,"gate_a"),
  93                    *gb = model_marker_get(mworld,"gate_a_recv");
  94
  95       v3_copy( ga->co, gate_a.co );
  96       v3_copy( gb->co, gate_b.co );
  97       v4_copy( ga->q, gate_a.q );
  98       v4_copy( gb->q, gate_b.q );
  99       v2_copy( ga->s, gate_a.dims );
 100       v2_copy( gb->s, gate_b.dims );
 101
 102       gate_a.other = &gate_b;
 103       gate_b.other = &gate_a;
 104
 105       gate_transform_update( &gate_a );
 106       gate_transform_update( &gate_b );
 107    }
 108 #endif
 109
 110    /* WATER DEV
 111     * again, TODO: parametric import (material)
 112     */
 113    {
 114       glmesh surf;
 115       submodel *sm = submodel_get(mworld,"mp_dev_water");
 116       model_unpack_submodel( mworld, &surf, sm );
 117
 118       water_init();
 119       water_set_surface( &surf, sm->pivot[1] );
 120    }
 121
 122    free( mworld );
 123    scene_upload( &world.geo );
 124    bvh_create( &world.geo );
 125
 126    water_compute_depth( world.geo.bbx );
 127
 128    scene_init( &world.foliage );
 129    model *mfoliage = vg_asset_read("models/rs_foliage.mdl");
 130
 131    v3f volume;
 132    v3_sub( world.geo.bbx[1], world.geo.bbx[0], volume );
 133    volume[1] = 1.0f;
 134
 135    m4x3f transform;
 136
 137    submodel *sm_blob = submodel_get( mfoliage, "blob" ),
 138             *sm_tree = submodel_get( mfoliage, "tree" );
 139
 140    for( int i=0;i<100000;i++ )
 141    {
 142       v3f pos;
 143       v3_mul( volume, (v3f){ vg_randf(), 1000.0f, vg_randf() }, pos );
 144       v3_add( pos, world.geo.bbx[0], pos );
 145
 146       ray_hit hit;
 147       hit.dist = INFINITY;
 148
 149       if( ray_world( pos, (v3f){0.0f,-1.0f,0.0f}, &hit ))
 150       {
 151          if( hit.normal[1] > 0.8f && !ray_hit_is_ramp(&hit) &&
 152              hit.pos[1] > wrender.height )
 153          {
 154             v4f qsurface, qrandom;
 155             v3f axis;
 156
 157             v3_cross( (v3f){0.0f,1.0f,0.0f}, hit.normal, axis );
 158
 159             float angle = v3_dot(hit.normal,(v3f){0.0f,1.0f,0.0f});
 160             q_axis_angle( qsurface, axis, angle );
 161             q_axis_angle( qrandom, (v3f){0.0f,1.0f,0.0f}, vg_randf()*VG_TAUf );
 162             q_mul( qsurface, qrandom, qsurface );
 163             q_m3x3( qsurface, transform );
 164
 165             v3_copy( hit.pos, transform[3] );
 166
 167             if( vg_randf() < 0.00000006f )
 168             {
 169                m3x3_identity( transform );
 170                scene_add_foliage( &world.foliage, mfoliage, sm_tree, transform );
 171             }
 172             else
 173                scene_add_foliage( &world.foliage, mfoliage, sm_blob, transform );
 174          }
 175       }
 176    }
 177
 178    free( mfoliage );
 179    scene_upload( &world.foliage );
 180 }
 181
 182 #endif /* WORLD_H */