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
  41 static void ray_world_get_tri( ray_hit *hit, v3f tri[3] )
  42 {
  43    for( int i=0; i<3; i++ )
  44       v3_copy( world.geo.verts[ hit->tri[i] ].co, tri[i] );
  45 }
  46
  47 __attribute__((always_inline))
  48 static int ray_world( v3f pos, v3f dir, ray_hit *hit )
  49 {
  50    return bvh_raycast( &world.geo, pos, dir, hit );
  51 }
  52
  53 static int ray_hit_is_ramp( ray_hit *hit )
  54 {
  55    return hit->tri[0] < world.sm_road.vertex_count;
  56 }
  57
  58 static void world_load(void)
  59 {
  60    /* Setup scene */
  61    scene_init( &world.geo );
  62    model *mworld = vg_asset_read( "models/mp_dev.mdl" );
  63
  64    scene_add_model( &world.geo, mworld, submodel_get( mworld, "mp_dev" ),
  65          (v3f){0.0f,0.0f,0.0f}, 0.0f, 1.0f );
  66    scene_copy_slice( &world.geo, &world.sm_road );
  67
  68    scene_add_model( &world.geo, mworld, submodel_get( mworld, "terrain" ),
  69          (v3f){0.0f,0.0f,0.0f}, 0.0f, 1.0f );
  70    scene_copy_slice( &world.geo, &world.sm_terrain );
  71
  72    v3_copy( model_marker_get( mworld, "mp_dev_tutorial" )->co, world.tutorial );
  73
  74
  75    /* GATE DEV */
  76 #if 0
  77    {
  78       model_marker *ga = model_marker_get(mworld,"gate_a"),
  79                    *gb = model_marker_get(mworld,"gate_a_recv");
  80
  81       v3_copy( ga->co, gate_a.co );
  82       v3_copy( gb->co, gate_b.co );
  83       v4_copy( ga->q, gate_a.q );
  84       v4_copy( gb->q, gate_b.q );
  85       v2_copy( ga->s, gate_a.dims );
  86       v2_copy( gb->s, gate_b.dims );
  87
  88       gate_a.other = &gate_b;
  89       gate_b.other = &gate_a;
  90
  91       gate_transform_update( &gate_a );
  92       gate_transform_update( &gate_b );
  93    }
  94 #endif
  95
  96    /* WATER DEV */
  97    {
  98       glmesh surf;
  99       submodel *sm = submodel_get(mworld,"mp_dev_water");
 100       model_unpack_submodel( mworld, &surf, sm );
 101
 102       water_init();
 103       water_set_surface( &surf, sm->pivot[1] );
 104    }
 105
 106    free( mworld );
 107    scene_upload( &world.geo );
 108    bvh_create( &world.geo );
 109
 110    water_compute_depth( world.geo.bbx );
 111
 112    scene_init( &world.foliage );
 113    model *mfoliage = vg_asset_read("models/rs_foliage.mdl");
 114
 115    v3f volume;
 116    v3_sub( world.geo.bbx[1], world.geo.bbx[0], volume );
 117    volume[1] = 1.0f;
 118
 119    m4x3f transform;
 120
 121    submodel *sm_blob = submodel_get( mfoliage, "blob" ),
 122             *sm_tree = submodel_get( mfoliage, "tree" );
 123
 124    for( int i=0;i<100000;i++ )
 125    {
 126       v3f pos;
 127       v3_mul( volume, (v3f){ vg_randf(), 1000.0f, vg_randf() }, pos );
 128       v3_add( pos, world.geo.bbx[0], pos );
 129
 130       ray_hit hit;
 131       hit.dist = INFINITY;
 132
 133       if( ray_world( pos, (v3f){0.0f,-1.0f,0.0f}, &hit ))
 134       {
 135          if( hit.normal[1] > 0.8f && !ray_hit_is_ramp(&hit) &&
 136              hit.pos[1] > wrender.height )
 137          {
 138             v4f qsurface, qrandom;
 139             v3f axis;
 140
 141             v3_cross( (v3f){0.0f,1.0f,0.0f}, hit.normal, axis );
 142
 143             float angle = v3_dot(hit.normal,(v3f){0.0f,1.0f,0.0f});
 144             q_axis_angle( qsurface, axis, angle );
 145             q_axis_angle( qrandom, (v3f){0.0f,1.0f,0.0f}, vg_randf()*VG_TAUf );
 146             q_mul( qsurface, qrandom, qsurface );
 147             q_m3x3( qsurface, transform );
 148
 149             v3_copy( hit.pos, transform[3] );
 150
 151             if( vg_randf() < 0.00000006f )
 152             {
 153                m3x3_identity( transform );
 154                scene_add_foliage( &world.foliage, mfoliage, sm_tree, transform );
 155             }
 156             else
 157                scene_add_foliage( &world.foliage, mfoliage, sm_blob, transform );
 158          }
 159       }
 160    }
 161
 162    free( mfoliage );
 163    scene_upload( &world.foliage );
 164 }
 165
 166 #endif /* WORLD_H */