main.c

   1 /*
   2  * Copyright (C) Mount0 Software, Harry Godden - All Rights Reserved
   3  */
   4
   5 #include "common.h"
   6
   7 /* Resources */
   8 vg_tex2d tex_norwey = { .path = "textures/norway_foliage.qoi" };
   9 vg_tex2d tex_grid = { .path = "textures/grid.qoi" };
  10 vg_tex2d tex_sky = { .path = "textures/sky.qoi" };
  11 vg_tex2d tex_gradients = { .path = "textures/gradients.qoi",
  12                            .flags = VG_TEXTURE_CLAMP };
  13 vg_tex2d tex_cement = { .path = "textures/cement512.qoi" };
  14 vg_tex2d tex_water = { .path = "textures/water.qoi" };
  15
  16 /* Convars */
  17 static int debugview = 0;
  18 static int sv_debugcam = 0;
  19 static int lightedit = 0;
  20 static int sv_scene = 0;
  21
  22 /* Components */
  23 #include "road.h"
  24 #include "scene.h"
  25 #include "ik.h"
  26 #include "audio.h"
  27 #include "terrain.h"
  28 #include "character.h"
  29 #include "ragdoll.h"
  30 #include "rigidbody.h"
  31 #include "render.h"
  32 #include "gate.h"
  33 #include "water.h"
  34 #include "world.h"
  35 #include "player.h"
  36
  37 #include "shaders/blit.h"
  38 #include "shaders/standard.h"
  39 #include "shaders/unlit.h"
  40
  41 #include "physics_test.h"
  42
  43 void vg_register(void)
  44 {
  45    shader_blit_register();
  46    shader_standard_register();
  47    shader_vblend_register();
  48    shader_unlit_register();
  49
  50    world_register();
  51    character_register();
  52    water_register();
  53    gate_register();
  54 }
  55
  56 static void init_other(void)
  57 {
  58    player_init();
  59    render_init();
  60    gate_init();
  61    world_init();
  62    character_init();
  63    audio_init();
  64 }
  65
  66 vg_tex2d *texture_list[] =
  67 {
  68    &tex_norwey,
  69    &tex_gradients,
  70    &tex_grid,
  71    &tex_sky,
  72    &tex_cement,
  73    &tex_water,
  74    &tex_water_surf
  75 };
  76
  77 int main( int argc, char *argv[] )
  78 {
  79    vg_init( argc, argv, "Voyager Game Engine" );
  80 }
  81
  82 static int playermodel( int argc, char const *argv[] )
  83 {
  84    if( argc < 1 ) return 0;
  85
  86    glmesh old_mesh = player.mdl.mesh;
  87
  88    if( character_load( &player.mdl, argv[0] ) )
  89       mesh_free( &old_mesh );
  90
  91    return 1;
  92 }
  93
  94 void vg_start(void)
  95 {
  96    vg_convar_push( (struct vg_convar){
  97       .name = "fc",
  98       .data = &freecam,
  99       .data_type = k_convar_dtype_i32,
 100       .opt_i32 = { .min=0, .max=1, .clamp=1 },
 101       .persistent = 1
 102    });
 103
 104    vg_convar_push( (struct vg_convar){
 105       .name = "grid",
 106       .data = &walk_grid_iterations,
 107       .data_type = k_convar_dtype_i32,
 108       .opt_i32 = { .min=0, .max=1, .clamp=0 },
 109       .persistent = 1
 110    });
 111
 112    vg_convar_push( (struct vg_convar){
 113       .name = "ledit",
 114       .data = &lightedit,
 115       .data_type = k_convar_dtype_i32,
 116       .opt_i32 = { .min=0, .max=1, .clamp=1 },
 117       .persistent = 1
 118    });
 119
 120    vg_convar_push( (struct vg_convar){
 121       .name = "walk_speed",
 122       .data = &k_walkspeed,
 123       .data_type = k_convar_dtype_f32,
 124       .opt_f32 = { .clamp = 0 },
 125       .persistent = 1
 126    });
 127
 128    vg_convar_push( (struct vg_convar){
 129       .name = "dt",
 130       .data = &ktimestep,
 131       .data_type = k_convar_dtype_f32,
 132       .opt_f32 = { .clamp = 0 },
 133       .persistent = 0
 134    });
 135
 136    vg_convar_push( (struct vg_convar){
 137       .name = "debugcam",
 138       .data = &sv_debugcam,
 139       .data_type = k_convar_dtype_i32,
 140       .opt_i32 = { .min=0, .max=1, .clamp=0 },
 141       .persistent = 1
 142    });
 143
 144    vg_convar_push( (struct vg_convar){
 145       .name = "debugview",
 146       .data = &debugview,
 147       .data_type = k_convar_dtype_i32,
 148       .opt_i32 = { .min=0, .max=1, .clamp=0 },
 149       .persistent = 1
 150    });
 151
 152         vg_function_push( (struct vg_cmd){
 153                 .name = "reset",
 154                 .function = reset_player
 155         });
 156
 157    vg_tex2d_init( texture_list, vg_list_size( texture_list ) );
 158
 159    init_other();
 160
 161    /*
 162     * If we're in physics test mode we dont need to load anything else, this
 163     * parameter is dev only. TODO: dev only cvars that don't ship with the game
 164     * when building in release mode.
 165     */
 166
 167    if( sv_scene == 0 )
 168    {
 169       character_load( &player.mdl, "ch_outlaw" );
 170       character_init_ragdoll( &player.mdl );
 171
 172       world_load();
 173
 174       reset_player( 1, (const char *[]){ "start" } );
 175       rb_init( &player.rb );
 176    }
 177    else
 178    {
 179       physics_test_start();
 180    }
 181 }
 182
 183 void vg_free(void)
 184 {
 185    vg_tex2d_free( texture_list, vg_list_size(texture_list) );
 186 }
 187
 188 void vg_update(void)
 189 {
 190    if( sv_scene == 0 )
 191    {
 192       player_update();
 193       world_update();
 194       //traffic_visualize( world.traffic, world.traffic_count );
 195       //
 196       /* TEMP */
 197       if( glfwGetKey( vg_window, GLFW_KEY_J ))
 198       {
 199          v3_copy( player.camera_pos, world.mr_ball.co );
 200       }
 201    }
 202    else if( sv_scene == 1 )
 203    {
 204       physics_test_update();
 205    }
 206 }
 207
 208 static void vg_framebuffer_resize( int w, int h )
 209 {
 210    render_fb_resize();
 211    gate_fb_resize();
 212    water_fb_resize();
 213 }
 214
 215 static void draw_origin_axis(void)
 216 {
 217    vg_line( (v3f){ 0.0f, 0.0f, 0.0f }, (v3f){ 1.0f, 0.0f, 0.0f }, 0xffff0000 );
 218    vg_line( (v3f){ 0.0f, 0.0f, 0.0f }, (v3f){ 0.0f, 1.0f, 0.0f }, 0xff00ff00 );
 219    vg_line( (v3f){ 0.0f, 0.0f, 0.0f }, (v3f){ 0.0f, 0.0f, 1.0f }, 0xff0000ff );
 220 }
 221
 222 static void render_main_game(void)
 223 {
 224    float speed = freecam? 0.0f: v3_length( player.rb.v );
 225    v3f shake = { vg_randf()-0.5f, vg_randf()-0.5f, vg_randf()-0.5f };
 226    v3_muls( shake, speed*0.01f, shake );
 227
 228    m4x4f world_4x4;
 229    m4x3_expand( player.camera_inverse, world_4x4 );
 230
 231    gpipeline.fov = freecam? 60.0f: 135.0f; /* 120 */
 232    m4x4_projection( vg_pv, gpipeline.fov,
 233          (float)vg_window_x / (float)vg_window_y,
 234          0.1f, 2100.0f );
 235
 236    m4x4_mul( vg_pv, world_4x4, vg_pv );
 237
 238    glEnable( GL_DEPTH_TEST );
 239
 240    /*
 241     * Draw world
 242     */
 243
 244    render_world( vg_pv, player.camera );
 245    render_water_texture( player.camera );
 246
 247    glBindFramebuffer( GL_FRAMEBUFFER, 0 );
 248    render_water_surface( vg_pv, player.camera );
 249
 250    vg_tex2d_bind( &tex_water, 1 ); /*TODO: ?*/
 251    render_world_gates( vg_pv, player.camera );
 252
 253    /* Copy the RGB of what we have into the background buffer */
 254    glBindFramebuffer( GL_READ_FRAMEBUFFER, 0 );
 255    glBindFramebuffer( GL_DRAW_FRAMEBUFFER, gpipeline.fb_background );
 256    glBlitFramebuffer( 0,0, vg_window_x, vg_window_y,
 257                       0,0, vg_window_x, vg_window_y,
 258                       GL_COLOR_BUFFER_BIT,
 259                       GL_LINEAR );
 260
 261    /* Clear out the colour buffer, but keep depth */
 262    glBindFramebuffer( GL_FRAMEBUFFER, 0 );
 263    glClearColor( 0.0f, 0.0f, 0.0f, 0.0f );
 264
 265    if( !player.is_dead )
 266       glClear( GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT );
 267    else
 268       glClear( GL_COLOR_BUFFER_BIT );
 269
 270    if( !player.is_dead )
 271    {
 272       m4x4_projection( vg_pv, gpipeline.fov,
 273             (float)vg_window_x / (float)vg_window_y,
 274             0.04f, 600.0f );
 275       m4x4_mul( vg_pv, world_4x4, vg_pv );
 276    }
 277    draw_player();
 278
 279    /* Draw back in the background
 280     *
 281     * TODO: need to disable alpha write in the terrain shader so this works
 282     *       again.
 283     */
 284    glEnable(GL_BLEND);
 285    glDisable(GL_DEPTH_TEST);
 286    glBlendFunc(GL_ONE_MINUS_DST_ALPHA, GL_DST_ALPHA);
 287    glBlendEquation(GL_FUNC_ADD);
 288
 289    shader_blit_use();
 290    shader_blit_uTexMain( 0 );
 291    glActiveTexture(GL_TEXTURE0);
 292    glBindTexture( GL_TEXTURE_2D, gpipeline.rgb_background );
 293
 294    render_fsquad();
 295    glDisable(GL_BLEND);
 296
 297    /* Other shite */
 298    glDisable( GL_DEPTH_TEST );
 299    vg_lines_drawall( (float *)vg_pv );
 300    glViewport( 0,0, vg_window_x, vg_window_y );
 301 }
 302
 303 void vg_render(void)
 304 {
 305    glBindFramebuffer( GL_FRAMEBUFFER, 0 );
 306    glViewport( 0,0, vg_window_x, vg_window_y );
 307
 308    glDisable( GL_DEPTH_TEST );
 309    glClearColor( 0.11f, 0.35f, 0.37f, 1.0f );
 310    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT );
 311
 312    draw_origin_axis();
 313
 314    if( sv_scene == 0 )
 315    {
 316       render_main_game();
 317    }
 318    else if( sv_scene == 1 )
 319    {
 320       physics_test_render();
 321    }
 322 }
 323
 324 static void run_light_widget( struct light_widget *lw )
 325 {
 326    struct ui_checkbox c1 = { .data=&lw->enabled };
 327
 328    ui_checkbox( &ui_global_ctx, &c1 );
 329
 330    if( lw->enabled )
 331    {
 332       struct ui_slider_vector
 333          colour = { .min=0.0f, .max=2.0f, .len=3, .data=lw->colour },
 334          dir    = { .min=-VG_PIf, .max=VG_PIf, .len=2, .data=lw->dir };
 335
 336       ui_slider_vector( &ui_global_ctx, &colour );
 337       ui_global_ctx.cursor[1] += 4;
 338       ui_slider_vector( &ui_global_ctx, &dir );
 339    }
 340 }
 341
 342 void vg_ui(void)
 343 {
 344    char buf[20];
 345
 346 #if 0
 347    snprintf( buf, 20, "%.2fm/s", v3_length( player.v ) );
 348    gui_text( (ui_px [2]){ 0, 0 }, buf, 1, k_text_align_left );
 349
 350    snprintf( buf, 20, "%.2f %.2f %.2f m/s",
 351          player.a[0], player.a[1], player.a[2] );
 352    gui_text( (ui_px [2]){ 0, 20 }, buf, 1, k_text_align_left );
 353
 354    snprintf( buf, 20, "pos %.2f %.2f %.2f",
 355          player.co[0], player.co[1], player.co[2] );
 356    gui_text( (ui_px [2]){ 0, 40 }, buf, 1, k_text_align_left );
 357
 358    if( vg_gamepad_ready )
 359    {
 360       for( int i=0; i<6; i++ )
 361       {
 362          snprintf( buf, 20, "%.2f", vg_gamepad.axes[i] );
 363          gui_text( (ui_px [2]){ 0, (i+3)*20 }, buf, 1, k_text_align_left );
 364       }
 365    }
 366    else
 367    {
 368       gui_text( (ui_px [2]){ 0, 60 },
 369             "Gamepad not ready", 1, k_text_align_left );
 370    }
 371 #endif
 372
 373    if( lightedit )
 374    {
 375       ui_global_ctx.cursor[0] = 10;
 376       ui_global_ctx.cursor[1] = 10;
 377       ui_global_ctx.cursor[2] = 200;
 378       ui_global_ctx.cursor[3] = 20;
 379
 380       struct ub_world_lighting *wl = &gpipeline.ub_world_lighting;
 381       struct ui_slider_vector
 382          s5 = { .min=0.0f, .max=2.0f, .len=3, .data=wl->g_ambient_colour };
 383
 384       struct ui_slider
 385          s8 = { .min=0.0f, .max=2.0f, .data = &gpipeline.shadow_spread },
 386          s9 = { .min=0.0f, .max=25.0f, .data = &gpipeline.shadow_length };
 387
 388       for( int i=0; i<3; i++ )
 389          run_light_widget( &gpipeline.widgets[i] );
 390
 391       gui_text( ui_global_ctx.cursor, "Ambient", 1, 0 );
 392       ui_global_ctx.cursor[1] += 16;
 393       ui_slider_vector( &ui_global_ctx, &s5 );
 394
 395       gui_text( ui_global_ctx.cursor, "Shadows", 1, 0 );
 396       ui_global_ctx.cursor[1] += 16;
 397       ui_slider( &ui_global_ctx, &s8 );
 398       ui_slider( &ui_global_ctx, &s9 );
 399
 400       gui_text( ui_global_ctx.cursor, "Misc", 1, 0 );
 401       ui_global_ctx.cursor[1] += 16;
 402       struct ui_checkbox c1 = {.data = &wl->g_light_preview};
 403       ui_checkbox( &ui_global_ctx, &c1 );
 404
 405       render_update_lighting_ub();
 406    }
 407 }