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 );
 251
 252    for( int i=0; i<world.gate_count; i++ )
 253    {
 254       render_gate( &world.gates[i], player.camera );
 255    }
 256
 257
 258    /* Copy the RGB of what we have into the background buffer */
 259    glBindFramebuffer( GL_READ_FRAMEBUFFER, 0 );
 260    glBindFramebuffer( GL_DRAW_FRAMEBUFFER, gpipeline.fb_background );
 261    glBlitFramebuffer( 0,0, vg_window_x, vg_window_y,
 262                       0,0, vg_window_x, vg_window_y,
 263                       GL_COLOR_BUFFER_BIT,
 264                       GL_LINEAR );
 265
 266    /* Clear out the colour buffer, but keep depth */
 267    glBindFramebuffer( GL_FRAMEBUFFER, 0 );
 268    glClearColor( 0.0f, 0.0f, 0.0f, 0.0f );
 269
 270    if( !player.is_dead )
 271       glClear( GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT );
 272    else
 273       glClear( GL_COLOR_BUFFER_BIT );
 274
 275    if( !player.is_dead )
 276    {
 277       m4x4_projection( vg_pv, gpipeline.fov,
 278             (float)vg_window_x / (float)vg_window_y,
 279             0.01f, 100.0f );
 280       m4x4_mul( vg_pv, world_4x4, vg_pv );
 281    }
 282    draw_player();
 283
 284    /* Draw back in the background
 285     *
 286     * TODO: need to disable alpha write in the terrain shader so this works
 287     *       again.
 288     */
 289    glEnable(GL_BLEND);
 290    glDisable(GL_DEPTH_TEST);
 291    glBlendFunc(GL_ONE_MINUS_DST_ALPHA, GL_DST_ALPHA);
 292    glBlendEquation(GL_FUNC_ADD);
 293
 294    shader_blit_use();
 295    shader_blit_uTexMain( 0 );
 296    glActiveTexture(GL_TEXTURE0);
 297    glBindTexture( GL_TEXTURE_2D, gpipeline.rgb_background );
 298
 299    render_fsquad();
 300    glDisable(GL_BLEND);
 301
 302    /* Other shite */
 303    glDisable( GL_DEPTH_TEST );
 304    vg_lines_drawall( (float *)vg_pv );
 305    glViewport( 0,0, vg_window_x, vg_window_y );
 306 }
 307
 308 void vg_render(void)
 309 {
 310    glBindFramebuffer( GL_FRAMEBUFFER, 0 );
 311    glViewport( 0,0, vg_window_x, vg_window_y );
 312
 313    glDisable( GL_DEPTH_TEST );
 314    glClearColor( 0.11f, 0.35f, 0.37f, 1.0f );
 315    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT );
 316
 317    draw_origin_axis();
 318
 319    if( sv_scene == 0 )
 320    {
 321       render_main_game();
 322    }
 323    else if( sv_scene == 1 )
 324    {
 325       physics_test_render();
 326    }
 327 }
 328
 329 static void run_light_widget( struct light_widget *lw )
 330 {
 331    struct ui_checkbox c1 = { .data=&lw->enabled };
 332
 333    ui_checkbox( &ui_global_ctx, &c1 );
 334
 335    if( lw->enabled )
 336    {
 337       struct ui_slider_vector
 338          colour = { .min=0.0f, .max=2.0f, .len=3, .data=lw->colour },
 339          dir    = { .min=-VG_PIf, .max=VG_PIf, .len=2, .data=lw->dir };
 340
 341       ui_slider_vector( &ui_global_ctx, &colour );
 342       ui_global_ctx.cursor[1] += 4;
 343       ui_slider_vector( &ui_global_ctx, &dir );
 344    }
 345 }
 346
 347 void vg_ui(void)
 348 {
 349    char buf[20];
 350
 351 #if 0
 352    snprintf( buf, 20, "%.2fm/s", v3_length( player.v ) );
 353    gui_text( (ui_px [2]){ 0, 0 }, buf, 1, k_text_align_left );
 354
 355    snprintf( buf, 20, "%.2f %.2f %.2f m/s",
 356          player.a[0], player.a[1], player.a[2] );
 357    gui_text( (ui_px [2]){ 0, 20 }, buf, 1, k_text_align_left );
 358
 359    snprintf( buf, 20, "pos %.2f %.2f %.2f",
 360          player.co[0], player.co[1], player.co[2] );
 361    gui_text( (ui_px [2]){ 0, 40 }, buf, 1, k_text_align_left );
 362
 363    if( vg_gamepad_ready )
 364    {
 365       for( int i=0; i<6; i++ )
 366       {
 367          snprintf( buf, 20, "%.2f", vg_gamepad.axes[i] );
 368          gui_text( (ui_px [2]){ 0, (i+3)*20 }, buf, 1, k_text_align_left );
 369       }
 370    }
 371    else
 372    {
 373       gui_text( (ui_px [2]){ 0, 60 },
 374             "Gamepad not ready", 1, k_text_align_left );
 375    }
 376 #endif
 377
 378    if( lightedit )
 379    {
 380       ui_global_ctx.cursor[0] = 10;
 381       ui_global_ctx.cursor[1] = 10;
 382       ui_global_ctx.cursor[2] = 200;
 383       ui_global_ctx.cursor[3] = 20;
 384
 385       struct ub_world_lighting *wl = &gpipeline.ub_world_lighting;
 386       struct ui_slider_vector
 387          s5 = { .min=0.0f, .max=2.0f, .len=3, .data=wl->g_ambient_colour };
 388
 389       struct ui_slider
 390          s8 = { .min=0.0f, .max=2.0f, .data = &gpipeline.shadow_spread },
 391          s9 = { .min=0.0f, .max=25.0f, .data = &gpipeline.shadow_length };
 392
 393       for( int i=0; i<3; i++ )
 394          run_light_widget( &gpipeline.widgets[i] );
 395
 396       gui_text( ui_global_ctx.cursor, "Ambient", 1, 0 );
 397       ui_global_ctx.cursor[1] += 16;
 398       ui_slider_vector( &ui_global_ctx, &s5 );
 399
 400       gui_text( ui_global_ctx.cursor, "Shadows", 1, 0 );
 401       ui_global_ctx.cursor[1] += 16;
 402       ui_slider( &ui_global_ctx, &s8 );
 403       ui_slider( &ui_global_ctx, &s9 );
 404
 405       gui_text( ui_global_ctx.cursor, "Misc", 1, 0 );
 406       ui_global_ctx.cursor[1] += 16;
 407       struct ui_checkbox c1 = {.data = &wl->g_light_preview};
 408       ui_checkbox( &ui_global_ctx, &c1 );
 409
 410       render_update_lighting_ub();
 411    }
 412 }