src/ui/ui.cpp

   1 #include "HUD.hpp"
   2 #include "Interface.hpp"
   3 #include "Keymap.hpp"
   4
   5 #include "../app/Assets.hpp"
   6 #include "../app/Environment.hpp"
   7 #include "../app/FrameCounter.hpp"
   8 #include "../app/init.hpp"
   9 #include "../audio/Audio.hpp"
  10 #include "../graphics/Font.hpp"
  11 #include "../graphics/Viewport.hpp"
  12 #include "../io/TokenStreamReader.hpp"
  13 #include "../model/shapes.hpp"
  14 #include "../world/BlockLookup.hpp"
  15 #include "../world/World.hpp"
  16
  17 #include <algorithm>
  18 #include <cmath>
  19 #include <iostream>
  20 #include <sstream>
  21 #include <glm/gtc/matrix_transform.hpp>
  22 #include <glm/gtx/io.hpp>
  23
  24
  25 namespace blank {
  26
  27 HUD::HUD(const BlockTypeRegistry &types, const Font &font)
  28 : types(types)
  29 , font(font)
  30 , block()
  31 , block_buf()
  32 , block_transform(1.0f)
  33 , block_label()
  34 , block_visible(false)
  35 , crosshair() {
  36         block_transform = glm::translate(block_transform, glm::vec3(50.0f, 50.0f, 0.0f));
  37         block_transform = glm::scale(block_transform, glm::vec3(50.0f));
  38         block_transform = glm::rotate(block_transform, 3.5f, glm::vec3(1.0f, 0.0f, 0.0f));
  39         block_transform = glm::rotate(block_transform, 0.35f, glm::vec3(0.0f, 1.0f, 0.0f));
  40
  41         OutlineModel::Buffer buf;
  42         buf.vertices = std::vector<glm::vec3>({
  43                 { -10.0f,   0.0f, 0.0f }, { 10.0f,  0.0f, 0.0f },
  44                 {   0.0f, -10.0f, 0.0f }, {  0.0f, 10.0f, 0.0f },
  45         });
  46         buf.indices = std::vector<OutlineModel::Index>({
  47                 0, 1, 2, 3
  48         });
  49         buf.colors.resize(4, { 10.0f, 10.0f, 10.0f });
  50         crosshair.Update(buf);
  51
  52         block_label.Position(
  53                 glm::vec3(50.0f, 85.0f, 0.0f),
  54                 Gravity::NORTH_WEST,
  55                 Gravity::NORTH
  56         );
  57         block_label.Foreground(glm::vec4(1.0f));
  58         block_label.Background(glm::vec4(0.5f));
  59 }
  60
  61
  62 void HUD::DisplayNone() {
  63         block_visible = false;
  64 }
  65
  66 void HUD::Display(const Block &b) {
  67         const BlockType &type = types.Get(b.type);
  68
  69         block_buf.Clear();
  70         type.FillEntityModel(block_buf, b.Transform());
  71         block.Update(block_buf);
  72
  73         block_label.Set(font, type.label);
  74
  75         block_visible = type.visible;
  76 }
  77
  78
  79 void HUD::Render(Viewport &viewport) noexcept {
  80         viewport.ClearDepth();
  81
  82         PlainColor &outline_prog = viewport.HUDOutlineProgram();
  83         viewport.EnableInvertBlending();
  84         viewport.SetCursor(glm::vec3(0.0f), Gravity::CENTER);
  85         outline_prog.SetM(viewport.Cursor());
  86         crosshair.Draw();
  87
  88         if (block_visible) {
  89                 DirectionalLighting &world_prog = viewport.HUDProgram();
  90                 world_prog.SetLightDirection({ 1.0f, 3.0f, 5.0f });
  91                 // disable distance fog
  92                 world_prog.SetFogDensity(0.0f);
  93
  94                 viewport.DisableBlending();
  95                 world_prog.SetM(block_transform);
  96                 block.Draw();
  97                 block_label.Render(viewport);
  98         }
  99 }
 100
 101
 102 Interface::Interface(
 103         const Config &config,
 104         Environment &env,
 105         World &world)
 106 : env(env)
 107 , world(world)
 108 , ctrl(world.Player())
 109 , hud(world.BlockTypes(), env.assets.small_ui_font)
 110 , aim{{ 0, 0, 0 }, { 0, 0, -1 }}
 111 , aim_world()
 112 , aim_entity()
 113 , outline()
 114 , outline_transform(1.0f)
 115 , counter_text()
 116 , position_text()
 117 , orientation_text()
 118 , block_text()
 119 , last_block()
 120 , last_entity(nullptr)
 121 , messages(env.assets.small_ui_font)
 122 , msg_timer(5000)
 123 , config(config)
 124 , place_timer(256)
 125 , remove_timer(256)
 126 , remove(0)
 127 , selection(0)
 128 , place_sound(env.assets.LoadSound("thump"))
 129 , remove_sound(env.assets.LoadSound("plop"))
 130 , fwd(0)
 131 , rev(0)
 132 , debug(false) {
 133         counter_text.Position(glm::vec3(-25.0f, 25.0f, 0.0f), Gravity::NORTH_EAST);
 134         counter_text.Foreground(glm::vec4(1.0f));
 135         counter_text.Background(glm::vec4(0.5f));
 136         position_text.Position(glm::vec3(-25.0f, 25.0f + env.assets.small_ui_font.LineSkip(), 0.0f), Gravity::NORTH_EAST);
 137         position_text.Foreground(glm::vec4(1.0f));
 138         position_text.Background(glm::vec4(0.5f));
 139         orientation_text.Position(glm::vec3(-25.0f, 25.0f + 2 * env.assets.small_ui_font.LineSkip(), 0.0f), Gravity::NORTH_EAST);
 140         orientation_text.Foreground(glm::vec4(1.0f));
 141         orientation_text.Background(glm::vec4(0.5f));
 142         block_text.Position(glm::vec3(-25.0f, 25.0f + 4 * env.assets.small_ui_font.LineSkip(), 0.0f), Gravity::NORTH_EAST);
 143         block_text.Foreground(glm::vec4(1.0f));
 144         block_text.Background(glm::vec4(0.5f));
 145         block_text.Set(env.assets.small_ui_font, "Block: none");
 146         entity_text.Position(glm::vec3(-25.0f, 25.0f + 4 * env.assets.small_ui_font.LineSkip(), 0.0f), Gravity::NORTH_EAST);
 147         entity_text.Foreground(glm::vec4(1.0f));
 148         entity_text.Background(glm::vec4(0.5f));
 149         entity_text.Set(env.assets.small_ui_font, "Entity: none");
 150         messages.Position(glm::vec3(25.0f, -25.0f, 0.0f), Gravity::SOUTH_WEST);
 151         messages.Foreground(glm::vec4(1.0f));
 152         messages.Background(glm::vec4(0.5f));
 153         hud.DisplayNone();
 154 }
 155
 156
 157 void Interface::HandlePress(const SDL_KeyboardEvent &event) {
 158         if (config.keyboard_disabled) return;
 159
 160         switch (env.keymap.Lookup(event)) {
 161                 case Keymap::MOVE_FORWARD:
 162                         rev.z = 1;
 163                         break;
 164                 case Keymap::MOVE_BACKWARD:
 165                         fwd.z = 1;
 166                         break;
 167                 case Keymap::MOVE_LEFT:
 168                         rev.x = 1;
 169                         break;
 170                 case Keymap::MOVE_RIGHT:
 171                         fwd.x = 1;
 172                         break;
 173                 case Keymap::MOVE_UP:
 174                         fwd.y = 1;
 175                         break;
 176                 case Keymap::MOVE_DOWN:
 177                         rev.y = 1;
 178                         break;
 179
 180                 case Keymap::BLOCK_FACE:
 181                         FaceBlock();
 182                         break;
 183                 case Keymap::BLOCK_TURN:
 184                         TurnBlock();
 185                         break;
 186                 case Keymap::BLOCK_NEXT:
 187                         SelectNext();
 188                         break;
 189                 case Keymap::BLOCK_PREV:
 190                         SelectPrevious();
 191                         break;
 192
 193                 case Keymap::BLOCK_PLACE:
 194                         PlaceBlock();
 195                         break;
 196                 case Keymap::BLOCK_PICK:
 197                         PickBlock();
 198                         break;
 199                 case Keymap::BLOCK_REMOVE:
 200                         RemoveBlock();
 201                         break;
 202
 203                 case Keymap::TOGGLE_COLLISION:
 204                         ToggleCollision();
 205                         break;
 206
 207                 case Keymap::PRINT_BLOCK:
 208                         PrintBlockInfo();
 209                         break;
 210                 case Keymap::PRINT_CHUNK:
 211                         PrintChunkInfo();
 212                         break;
 213                 case Keymap::PRINT_LIGHT:
 214                         PrintLightInfo();
 215                         break;
 216                 case Keymap::PRINT_SELECTION:
 217                         PrintSelectionInfo();
 218                         break;
 219
 220                 case Keymap::TOGGLE_VISUAL:
 221                         ToggleVisual();
 222                         break;
 223                 case Keymap::TOGGLE_DEBUG:
 224                         ToggleDebug();
 225                         break;
 226                 case Keymap::TOGGLE_AUDIO:
 227                         ToggleAudio();
 228                         break;
 229
 230                 case Keymap::EXIT:
 231                         env.state.Pop();
 232                         break;
 233
 234                 default:
 235                         break;
 236         }
 237 }
 238
 239 void Interface::HandleRelease(const SDL_KeyboardEvent &event) {
 240         if (config.keyboard_disabled) return;
 241
 242         switch (env.keymap.Lookup(event)) {
 243                 case Keymap::MOVE_FORWARD:
 244                         rev.z = 0;
 245                         break;
 246                 case Keymap::MOVE_BACKWARD:
 247                         fwd.z = 0;
 248                         break;
 249                 case Keymap::MOVE_LEFT:
 250                         rev.x = 0;
 251                         break;
 252                 case Keymap::MOVE_RIGHT:
 253                         fwd.x = 0;
 254                         break;
 255                 case Keymap::MOVE_UP:
 256                         fwd.y = 0;
 257                         break;
 258                 case Keymap::MOVE_DOWN:
 259                         rev.y = 0;
 260                         break;
 261
 262                 default:
 263                         break;
 264         }
 265 }
 266
 267 void Interface::FaceBlock() {
 268         selection.SetFace(Block::Face((selection.GetFace() + 1) % Block::FACE_COUNT));
 269         hud.Display(selection);
 270 }
 271
 272 void Interface::TurnBlock() {
 273         selection.SetTurn(Block::Turn((selection.GetTurn() + 1) % Block::TURN_COUNT));
 274         hud.Display(selection);
 275 }
 276
 277 void Interface::ToggleCollision() {
 278         ctrl.Controlled().WorldCollidable(!ctrl.Controlled().WorldCollidable());
 279         if (ctrl.Controlled().WorldCollidable()) {
 280                 PostMessage("collision on");
 281         } else {
 282                 PostMessage("collision off");
 283         }
 284 }
 285
 286 void Interface::PrintBlockInfo() {
 287         std::cout << std::endl;
 288         if (!aim_world) {
 289                 PostMessage("not looking at any block");
 290                 Ray aim = ctrl.Aim();
 291                 std::stringstream s;
 292                 s << "aim ray: " << aim.orig << ", " << aim.dir;
 293                 PostMessage(s.str());
 294                 return;
 295         }
 296         std::stringstream s;
 297         s << "looking at block " << aim_world.block
 298                 << " " << aim_world.BlockCoords()
 299                 << " of chunk " << aim_world.GetChunk().Position()
 300         ;
 301         PostMessage(s.str());
 302         Print(aim_world.GetBlock());
 303 }
 304
 305 void Interface::PrintChunkInfo() {
 306         std::cout << std::endl;
 307         if (!aim_world) {
 308                 PostMessage("not looking at any block");
 309                 return;
 310         }
 311         std::stringstream s;
 312         s << "looking at chunk " << aim_world.GetChunk().Position();
 313         PostMessage(s.str());
 314
 315         PostMessage("  neighbors:");
 316         if (aim_world.GetChunk().HasNeighbor(Block::FACE_LEFT)) {
 317                 s.str("");
 318                 s << " left  " << aim_world.GetChunk().GetNeighbor(Block::FACE_LEFT).Position();
 319                 PostMessage(s.str());
 320         }
 321         if (aim_world.GetChunk().HasNeighbor(Block::FACE_RIGHT)) {
 322                 s.str("");
 323                 s << " right " << aim_world.GetChunk().GetNeighbor(Block::FACE_RIGHT).Position();
 324                 PostMessage(s.str());
 325         }
 326         if (aim_world.GetChunk().HasNeighbor(Block::FACE_UP)) {
 327                 s.str("");
 328                 s << " up    " << aim_world.GetChunk().GetNeighbor(Block::FACE_UP).Position();
 329                 PostMessage(s.str());
 330         }
 331         if (aim_world.GetChunk().HasNeighbor(Block::FACE_DOWN)) {
 332                 s.str("");
 333                 s << " down  " << aim_world.GetChunk().GetNeighbor(Block::FACE_DOWN).Position();
 334                 PostMessage(s.str());
 335         }
 336         if (aim_world.GetChunk().HasNeighbor(Block::FACE_FRONT)) {
 337                 s.str("");
 338                 s << " front " << aim_world.GetChunk().GetNeighbor(Block::FACE_FRONT).Position();
 339                 PostMessage(s.str());
 340         }
 341         if (aim_world.GetChunk().HasNeighbor(Block::FACE_BACK)) {
 342                 s.str("");
 343                 s << " back  " << aim_world.GetChunk().GetNeighbor(Block::FACE_BACK).Position();
 344                 PostMessage(s.str());
 345         }
 346         std::cout << std::endl;
 347 }
 348
 349 void Interface::PrintLightInfo() {
 350         std::stringstream s;
 351         s
 352                 << "light level " << world.PlayerChunk().GetLight(world.Player().Position())
 353                 << " at position " << world.Player().Position()
 354         ;
 355         PostMessage(s.str());
 356 }
 357
 358 void Interface::PrintSelectionInfo() {
 359         std::cout << std::endl;
 360         Print(selection);
 361 }
 362
 363 void Interface::Print(const Block &block) {
 364         std::stringstream s;
 365         s << "type: " << block.type
 366                 << ", face: " << block.GetFace()
 367                 << ", turn: " << block.GetTurn()
 368         ;
 369         PostMessage(s.str());
 370 }
 371
 372 void Interface::ToggleAudio() {
 373         config.audio_disabled = !config.audio_disabled;
 374         if (config.audio_disabled) {
 375                 PostMessage("audio off");
 376         } else {
 377                 PostMessage("audio on");
 378         }
 379 }
 380
 381 void Interface::ToggleVisual() {
 382         config.visual_disabled = !config.visual_disabled;
 383         if (config.visual_disabled) {
 384                 PostMessage("visual off");
 385         } else {
 386                 PostMessage("visual on");
 387         }
 388 }
 389
 390 void Interface::ToggleDebug() {
 391         debug = !debug;
 392         if (debug) {
 393                 UpdateCounter();
 394                 UpdatePosition();
 395                 UpdateOrientation();
 396                 UpdateBlockInfo();
 397                 UpdateEntityInfo();
 398         }
 399 }
 400
 401 void Interface::UpdateCounter() {
 402         std::stringstream s;
 403         s << std::setprecision(3) <<
 404                 "avg: " << env.counter.Average().running << "ms, "
 405                 "peak: " << env.counter.Peak().running << "ms";
 406         std::string text = s.str();
 407         counter_text.Set(env.assets.small_ui_font, text);
 408 }
 409
 410 void Interface::UpdatePosition() {
 411         std::stringstream s;
 412         s << std::setprecision(3) << "pos: " << ctrl.Controlled().AbsolutePosition();
 413         position_text.Set(env.assets.small_ui_font, s.str());
 414 }
 415
 416 void Interface::UpdateOrientation() {
 417         std::stringstream s;
 418         s << std::setprecision(3) << "pitch: " << rad2deg(ctrl.Pitch())
 419                 << ", yaw: " << rad2deg(ctrl.Yaw());
 420         orientation_text.Set(env.assets.small_ui_font, s.str());
 421 }
 422
 423 void Interface::UpdateBlockInfo() {
 424         if (aim_world) {
 425                 const Block &block = aim_world.GetBlock();
 426                 if (last_block != block) {
 427                         std::stringstream s;
 428                         s << "Block: "
 429                                 << aim_world.GetType().label
 430                                 << ", face: " << block.GetFace()
 431                                 << ", turn: " << block.GetTurn();
 432                         block_text.Set(env.assets.small_ui_font, s.str());
 433                         last_block = block;
 434                 }
 435         } else {
 436                 if (last_block != Block()) {
 437                         std::stringstream s;
 438                         s << "Block: none";
 439                         block_text.Set(env.assets.small_ui_font, s.str());
 440                         last_block = Block();
 441                 }
 442         }
 443 }
 444
 445 void Interface::UpdateEntityInfo() {
 446         if (aim_entity) {
 447                 if (last_entity != aim_entity.entity) {
 448                         std::stringstream s;
 449                         s << "Entity: " << aim_entity.entity->Name();
 450                         entity_text.Set(env.assets.small_ui_font, s.str());
 451                         last_entity = aim_entity.entity;
 452                 }
 453         }
 454 }
 455
 456
 457 void Interface::Handle(const SDL_MouseMotionEvent &event) {
 458         if (config.mouse_disabled) return;
 459         ctrl.RotateYaw(event.xrel * config.yaw_sensitivity);
 460         ctrl.RotatePitch(event.yrel * config.pitch_sensitivity);
 461 }
 462
 463 void Interface::HandlePress(const SDL_MouseButtonEvent &event) {
 464         if (config.mouse_disabled) return;
 465
 466         if (event.button == SDL_BUTTON_LEFT) {
 467                 RemoveBlock();
 468                 remove_timer.Start();
 469         } else if (event.button == SDL_BUTTON_MIDDLE) {
 470                 PickBlock();
 471         } else if (event.button == SDL_BUTTON_RIGHT) {
 472                 PlaceBlock();
 473                 place_timer.Start();
 474         }
 475 }
 476
 477 void Interface::HandleRelease(const SDL_MouseButtonEvent &event) {
 478         if (config.mouse_disabled) return;
 479
 480         if (event.button == SDL_BUTTON_LEFT) {
 481                 remove_timer.Stop();
 482         } else if (event.button == SDL_BUTTON_RIGHT) {
 483                 place_timer.Stop();
 484         }
 485 }
 486
 487 void Interface::PickBlock() {
 488         if (!aim_world) return;
 489         selection = aim_world.GetBlock();
 490         hud.Display(selection);
 491 }
 492
 493 void Interface::PlaceBlock() {
 494         if (!aim_world) return;
 495
 496         glm::vec3 next_pos = aim_world.BlockCoords() + aim_world.normal;
 497         BlockLookup next_block(&aim_world.GetChunk(), next_pos);
 498         if (next_block) {
 499         }
 500         next_block.SetBlock(selection);
 501
 502         if (config.audio_disabled) return;
 503         const Entity &player = ctrl.Controlled();
 504         env.audio.Play(
 505                 place_sound,
 506                 aim_world.GetChunk().ToSceneCoords(player.ChunkCoords(), next_pos)
 507         );
 508 }
 509
 510 void Interface::RemoveBlock() noexcept {
 511         if (!aim_world) return;
 512         aim_world.SetBlock(remove);
 513
 514         if (config.audio_disabled) return;
 515         const Entity &player = ctrl.Controlled();
 516         env.audio.Play(
 517                 remove_sound,
 518                 aim_world.GetChunk().ToSceneCoords(player.ChunkCoords(), aim_world.BlockCoords())
 519         );
 520 }
 521
 522
 523 void Interface::Handle(const SDL_MouseWheelEvent &event) {
 524         if (config.mouse_disabled) return;
 525
 526         if (event.y < 0) {
 527                 SelectNext();
 528         } else if (event.y > 0) {
 529                 SelectPrevious();
 530         }
 531 }
 532
 533 void Interface::SelectNext() {
 534         ++selection.type;
 535         if (size_t(selection.type) >= world.BlockTypes().Size()) {
 536                 selection.type = 1;
 537         }
 538         hud.Display(selection);
 539 }
 540
 541 void Interface::SelectPrevious() {
 542         --selection.type;
 543         if (selection.type <= 0) {
 544                 selection.type = world.BlockTypes().Size() - 1;
 545         }
 546         hud.Display(selection);
 547 }
 548
 549
 550 void Interface::PostMessage(const char *msg) {
 551         messages.PushLine(msg);
 552         msg_timer.Reset();
 553         msg_timer.Start();
 554         std::cout << msg << std::endl;
 555 }
 556
 557
 558 void Interface::Update(int dt) {
 559         ctrl.Velocity(glm::vec3(fwd - rev) * config.move_velocity);
 560         ctrl.Update(dt);
 561
 562         msg_timer.Update(dt);
 563         place_timer.Update(dt);
 564         remove_timer.Update(dt);
 565
 566         aim = ctrl.Aim();
 567         CheckAim();
 568
 569         if (msg_timer.HitOnce()) {
 570                 msg_timer.Stop();
 571         }
 572
 573         if (remove_timer.Hit()) {
 574                 RemoveBlock();
 575                 CheckAim();
 576         }
 577
 578         if (place_timer.Hit()) {
 579                 PlaceBlock();
 580                 CheckAim();
 581         }
 582
 583         if (debug) {
 584                 if (env.counter.Changed()) {
 585                         UpdateCounter();
 586                 }
 587                 UpdatePosition();
 588                 UpdateOrientation();
 589         }
 590 }
 591
 592 namespace {
 593
 594 OutlineModel::Buffer outl_buf;
 595
 596 }
 597
 598 void Interface::CheckAim() {
 599         if (!world.Intersection(aim, glm::mat4(1.0f), ctrl.Controlled().ChunkCoords(), aim_world)) {
 600                 aim_world = WorldCollision();
 601         }
 602         if (!world.Intersection(aim, glm::mat4(1.0f), ctrl.Controlled(), aim_entity)) {
 603                 aim_entity = EntityCollision();
 604         }
 605         if (aim_world && aim_entity) {
 606                 // got both, pick the closest one
 607                 if (aim_world.depth < aim_entity.depth) {
 608                         UpdateOutline();
 609                         aim_entity = EntityCollision();
 610                 } else {
 611                         aim_world = WorldCollision();
 612                 }
 613         } else if (aim_world) {
 614                 UpdateOutline();
 615         }
 616         if (debug) {
 617                 UpdateBlockInfo();
 618                 UpdateEntityInfo();
 619         }
 620 }
 621
 622 void Interface::UpdateOutline() {
 623         outl_buf.Clear();
 624         aim_world.GetType().FillOutlineModel(outl_buf);
 625         outline.Update(outl_buf);
 626         outline_transform = aim_world.GetChunk().Transform(world.Player().ChunkCoords());
 627         outline_transform *= aim_world.BlockTransform();
 628         outline_transform *= glm::scale(glm::vec3(1.005f));
 629 }
 630
 631
 632 void Interface::Render(Viewport &viewport) noexcept {
 633         if (config.visual_disabled) return;
 634
 635         if (aim_world) {
 636                 PlainColor &outline_prog = viewport.WorldOutlineProgram();
 637                 outline_prog.SetM(outline_transform);
 638                 outline.Draw();
 639         }
 640
 641         if (debug) {
 642                 counter_text.Render(viewport);
 643                 position_text.Render(viewport);
 644                 orientation_text.Render(viewport);
 645                 if (aim_world) {
 646                         block_text.Render(viewport);
 647                 } else if (aim_entity) {
 648                         entity_text.Render(viewport);
 649                 }
 650         }
 651
 652         if (msg_timer.Running()) {
 653                 messages.Render(viewport);
 654         }
 655
 656         hud.Render(viewport);
 657 }
 658
 659
 660 Keymap::Keymap()
 661 : codemap{ NONE } {
 662
 663 }
 664
 665 void Keymap::Map(SDL_Scancode scancode, Action action) {
 666         if (scancode > MAX_SCANCODE) {
 667                 throw std::runtime_error("refusing to map scancode: too damn high");
 668         }
 669         codemap[scancode] = action;
 670 }
 671
 672 Keymap::Action Keymap::Lookup(SDL_Scancode scancode) {
 673         if (scancode < NUM_SCANCODES) {
 674                 return codemap[scancode];
 675         } else {
 676                 return NONE;
 677         }
 678 }
 679
 680
 681 void Keymap::LoadDefault() {
 682         Map(SDL_SCANCODE_UP, MOVE_FORWARD);
 683         Map(SDL_SCANCODE_W, MOVE_FORWARD);
 684         Map(SDL_SCANCODE_DOWN, MOVE_BACKWARD);
 685         Map(SDL_SCANCODE_S, MOVE_BACKWARD);
 686         Map(SDL_SCANCODE_LEFT, MOVE_LEFT);
 687         Map(SDL_SCANCODE_A, MOVE_LEFT);
 688         Map(SDL_SCANCODE_RIGHT, MOVE_RIGHT);
 689         Map(SDL_SCANCODE_D, MOVE_RIGHT);
 690         Map(SDL_SCANCODE_SPACE, MOVE_UP);
 691         Map(SDL_SCANCODE_RSHIFT, MOVE_UP);
 692         Map(SDL_SCANCODE_LSHIFT, MOVE_DOWN);
 693         Map(SDL_SCANCODE_LCTRL, MOVE_DOWN);
 694         Map(SDL_SCANCODE_RCTRL, MOVE_DOWN);
 695
 696         Map(SDL_SCANCODE_Q, BLOCK_FACE);
 697         Map(SDL_SCANCODE_E, BLOCK_TURN);
 698         Map(SDL_SCANCODE_TAB, BLOCK_NEXT);
 699         Map(SDL_SCANCODE_RIGHTBRACKET, BLOCK_NEXT);
 700         Map(SDL_SCANCODE_LEFTBRACKET, BLOCK_PREV);
 701
 702         Map(SDL_SCANCODE_INSERT, BLOCK_PLACE);
 703         Map(SDL_SCANCODE_RETURN, BLOCK_PLACE);
 704         Map(SDL_SCANCODE_MENU, BLOCK_PICK);
 705         Map(SDL_SCANCODE_DELETE, BLOCK_REMOVE);
 706         Map(SDL_SCANCODE_BACKSPACE, BLOCK_REMOVE);
 707
 708         Map(SDL_SCANCODE_N, TOGGLE_COLLISION);
 709         Map(SDL_SCANCODE_F1, TOGGLE_VISUAL);
 710         Map(SDL_SCANCODE_F3, TOGGLE_DEBUG);
 711         Map(SDL_SCANCODE_F4, TOGGLE_AUDIO);
 712
 713         Map(SDL_SCANCODE_B, PRINT_BLOCK);
 714         Map(SDL_SCANCODE_C, PRINT_CHUNK);
 715         Map(SDL_SCANCODE_L, PRINT_LIGHT);
 716         Map(SDL_SCANCODE_P, PRINT_SELECTION);
 717
 718         Map(SDL_SCANCODE_ESCAPE, EXIT);
 719 }
 720
 721
 722 void Keymap::Load(std::istream &is) {
 723         TokenStreamReader in(is);
 724         std::string key_name;
 725         std::string action_name;
 726         SDL_Scancode key;
 727         Action action;
 728         while (in.HasMore()) {
 729                 if (in.Peek().type == Token::STRING) {
 730                         in.ReadString(key_name);
 731                         key = SDL_GetScancodeFromName(key_name.c_str());
 732                 } else {
 733                         key = SDL_Scancode(in.GetInt());
 734                 }
 735                 in.Skip(Token::EQUALS);
 736                 in.ReadIdentifier(action_name);
 737                 action = StringToAction(action_name);
 738                 if (in.HasMore() && in.Peek().type == Token::SEMICOLON) {
 739                         in.Skip(Token::SEMICOLON);
 740                 }
 741                 Map(key, action);
 742         }
 743 }
 744
 745 void Keymap::Save(std::ostream &out) {
 746         for (unsigned int i = 0; i < NUM_SCANCODES; ++i) {
 747                 if (codemap[i] == NONE) continue;
 748
 749                 const char *str = SDL_GetScancodeName(SDL_Scancode(i));
 750                 if (str && *str) {
 751                         out << '"';
 752                         while (*str) {
 753                                 if (*str == '"') {
 754                                         out << "\\\"";
 755                                 } else {
 756                                         out << *str;
 757                                 }
 758                                 ++str;
 759                         }
 760                         out << '"';
 761                 } else {
 762                         out << i;
 763                 }
 764
 765                 out << " = " << ActionToString(codemap[i]) << std::endl;;
 766         }
 767 }
 768
 769
 770 const char *Keymap::ActionToString(Action action) {
 771         switch (action) {
 772                 default:
 773                 case NONE:
 774                         return "none";
 775                 case MOVE_FORWARD:
 776                         return "move_forward";
 777                 case MOVE_BACKWARD:
 778                         return "move_backward";
 779                 case MOVE_LEFT:
 780                         return "move_left";
 781                 case MOVE_RIGHT:
 782                         return "move_right";
 783                 case MOVE_UP:
 784                         return "move_up";
 785                 case MOVE_DOWN:
 786                         return "move_down";
 787                 case BLOCK_FACE:
 788                         return "block_face";
 789                 case BLOCK_TURN:
 790                         return "block_turn";
 791                 case BLOCK_NEXT:
 792                         return "block_next";
 793                 case BLOCK_PREV:
 794                         return "block_prev";
 795                 case BLOCK_PLACE:
 796                         return "block_place";
 797                 case BLOCK_PICK:
 798                         return "block_pick";
 799                 case BLOCK_REMOVE:
 800                         return "block_remove";
 801                 case TOGGLE_COLLISION:
 802                         return "toggle_collision";
 803                 case TOGGLE_AUDIO:
 804                         return "toggle_audio";
 805                 case TOGGLE_VISUAL:
 806                         return "toggle_visual";
 807                 case TOGGLE_DEBUG:
 808                         return "toggle_debug";
 809                 case PRINT_BLOCK:
 810                         return "print_block";
 811                 case PRINT_CHUNK:
 812                         return "print_chunk";
 813                 case PRINT_LIGHT:
 814                         return "print_light";
 815                 case PRINT_SELECTION:
 816                         return "print_selection";
 817                 case EXIT:
 818                         return "exit";
 819         }
 820 }
 821
 822 Keymap::Action Keymap::StringToAction(const std::string &str) {
 823         if (str == "move_forward") {
 824                 return MOVE_FORWARD;
 825         } else if (str == "move_backward") {
 826                 return MOVE_BACKWARD;
 827         } else if (str == "move_left") {
 828                 return MOVE_LEFT;
 829         } else if (str == "move_right") {
 830                 return MOVE_RIGHT;
 831         } else if (str == "move_up") {
 832                 return MOVE_UP;
 833         } else if (str == "move_down") {
 834                 return MOVE_DOWN;
 835         } else if (str == "block_face") {
 836                 return BLOCK_FACE;
 837         } else if (str == "block_turn") {
 838                 return BLOCK_TURN;
 839         } else if (str == "block_next") {
 840                 return BLOCK_NEXT;
 841         } else if (str == "block_prev") {
 842                 return BLOCK_PREV;
 843         } else if (str == "block_place") {
 844                 return BLOCK_PLACE;
 845         } else if (str == "block_pick") {
 846                 return BLOCK_PICK;
 847         } else if (str == "block_remove") {
 848                 return BLOCK_REMOVE;
 849         } else if (str == "toggle_collision") {
 850                 return TOGGLE_COLLISION;
 851         } else if (str == "toggle_audio") {
 852                 return TOGGLE_AUDIO;
 853         } else if (str == "toggle_visual") {
 854                 return TOGGLE_VISUAL;
 855         } else if (str == "toggle_debug") {
 856                 return TOGGLE_DEBUG;
 857         } else if (str == "print_block") {
 858                 return PRINT_BLOCK;
 859         } else if (str == "print_chunk") {
 860                 return PRINT_CHUNK;
 861         } else if (str == "print_light") {
 862                 return PRINT_LIGHT;
 863         } else if (str == "print_selection") {
 864                 return PRINT_SELECTION;
 865         } else if (str == "exit") {
 866                 return EXIT;
 867         } else {
 868                 return NONE;
 869         }
 870 }
 871
 872 }