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