src/ui/ui.cpp

   1 #include "ClientController.hpp"
   2 #include "DirectInput.hpp"
   3 #include "HUD.hpp"
   4 #include "InteractiveManipulator.hpp"
   5 #include "Interface.hpp"
   6 #include "Keymap.hpp"
   7 #include "PlayerController.hpp"
   8
   9 #include "../app/Assets.hpp"
  10 #include "../app/Config.hpp"
  11 #include "../app/Environment.hpp"
  12 #include "../app/FrameCounter.hpp"
  13 #include "../app/init.hpp"
  14 #include "../audio/Audio.hpp"
  15 #include "../audio/SoundBank.hpp"
  16 #include "../graphics/Font.hpp"
  17 #include "../graphics/Viewport.hpp"
  18 #include "../io/TokenStreamReader.hpp"
  19 #include "../model/bounds.hpp"
  20 #include "../world/BlockLookup.hpp"
  21 #include "../world/World.hpp"
  22 #include "../world/WorldManipulator.hpp"
  23
  24 #include <algorithm>
  25 #include <cmath>
  26 #include <iostream>
  27 #include <map>
  28 #include <sstream>
  29 #include <glm/gtc/matrix_transform.hpp>
  30 #include <glm/gtx/rotate_vector.hpp>
  31 #include <glm/gtx/io.hpp>
  32
  33
  34 namespace blank {
  35
  36 PlayerController::PlayerController(World &world, Player &player)
  37 : world(world)
  38 , player(player)
  39 , move_dir(0.0f)
  40 , dirty(true)
  41 , aim_world()
  42 , aim_entity() {
  43         player.GetEntity().SetController(*this);
  44 }
  45
  46 PlayerController::~PlayerController() {
  47         if (&player.GetEntity().GetController() == this) {
  48                 player.GetEntity().UnsetController();
  49         }
  50 }
  51
  52 void PlayerController::SetMovement(const glm::vec3 &m) noexcept {
  53         if (dot(m, m) > 1.0f) {
  54                 move_dir = normalize(m);
  55         } else {
  56                 move_dir = m;
  57         }
  58         Invalidate();
  59 }
  60
  61 glm::vec3 PlayerController::ControlForce(const Entity &e, const EntityState &s) const {
  62         return TargetVelocity(rotateY(move_dir * e.MaxVelocity(), s.yaw), s, 5.0f);
  63 }
  64
  65 void PlayerController::TurnHead(float dp, float dy) noexcept {
  66         player.GetEntity().TurnHead(dp, dy);
  67 }
  68
  69 float PlayerController::GetPitch() const noexcept {
  70         return player.GetEntity().Pitch();
  71 }
  72
  73 float PlayerController::GetYaw() const noexcept {
  74         return player.GetEntity().Yaw();
  75 }
  76
  77 void PlayerController::SelectInventory(int i) noexcept {
  78         player.SetInventorySlot(i);
  79 }
  80
  81 int PlayerController::InventorySlot() const noexcept {
  82         return player.GetInventorySlot();
  83 }
  84
  85 void PlayerController::Invalidate() noexcept {
  86         dirty = true;
  87 }
  88
  89 void PlayerController::UpdatePlayer() noexcept {
  90         if (dirty) {
  91                 Ray aim = player.Aim();
  92                 if (!world.Intersection(aim, glm::mat4(1.0f), player.GetEntity().ChunkCoords(), aim_world)) {
  93                         aim_world = WorldCollision();
  94                 }
  95                 if (!world.Intersection(aim, glm::mat4(1.0f), player.GetEntity(), aim_entity)) {
  96                         aim_entity = EntityCollision();
  97                 }
  98                 if (aim_world && aim_entity) {
  99                         // got both, pick the closest one
 100                         if (aim_world.depth < aim_entity.depth) {
 101                                 aim_entity = EntityCollision();
 102                         } else {
 103                                 aim_world = WorldCollision();
 104                         }
 105                 }
 106                 dirty = false;
 107         }
 108 }
 109
 110
 111 DirectInput::DirectInput(World &world, Player &player, WorldManipulator &manip)
 112 : PlayerController(world, player)
 113 , manip(manip)
 114 , place_timer(0.25f)
 115 , remove_timer(0.25f) {
 116
 117 }
 118
 119 void DirectInput::Update(Entity &, float dt) {
 120         Invalidate(); // world has changed in the meantime
 121         UpdatePlayer();
 122
 123         remove_timer.Update(dt);
 124         if (remove_timer.Hit()) {
 125                 RemoveBlock();
 126         }
 127
 128         place_timer.Update(dt);
 129         if (place_timer.Hit()) {
 130                 PlaceBlock();
 131         }
 132 }
 133
 134 void DirectInput::StartPrimaryAction() {
 135         if (!remove_timer.Running()) {
 136                 RemoveBlock();
 137                 remove_timer.Start();
 138         }
 139 }
 140
 141 void DirectInput::StopPrimaryAction() {
 142         remove_timer.Stop();
 143 }
 144
 145 void DirectInput::StartSecondaryAction() {
 146         if (!place_timer.Running()) {
 147                 PlaceBlock();
 148                 place_timer.Start();
 149         }
 150 }
 151
 152 void DirectInput::StopSecondaryAction() {
 153         place_timer.Stop();
 154 }
 155
 156 void DirectInput::StartTertiaryAction() {
 157         PickBlock();
 158 }
 159
 160 void DirectInput::StopTertiaryAction() {
 161         // nothing
 162 }
 163
 164 void DirectInput::PickBlock() {
 165         UpdatePlayer();
 166         if (!BlockFocus()) return;
 167         SelectInventory(BlockFocus().GetBlock().type - 1);
 168 }
 169
 170 void DirectInput::PlaceBlock() {
 171         UpdatePlayer();
 172         if (!BlockFocus()) return;
 173
 174         BlockLookup next_block(BlockFocus().chunk, BlockFocus().BlockPos(), Block::NormalFace(BlockFocus().normal));
 175         if (!next_block) {
 176                 return;
 177         }
 178         manip.SetBlock(next_block.GetChunk(), next_block.GetBlockIndex(), Block(InventorySlot() + 1));
 179         Invalidate();
 180 }
 181
 182 void DirectInput::RemoveBlock() {
 183         UpdatePlayer();
 184         if (!BlockFocus()) return;
 185         manip.SetBlock(BlockFocus().GetChunk(), BlockFocus().block, Block(0));
 186         Invalidate();
 187 }
 188
 189
 190 HUD::HUD(Environment &env, Config &config, const Player &player)
 191 : env(env)
 192 , config(config)
 193 , player(player)
 194 // block focus
 195 , outline()
 196 , outline_transform(1.0f)
 197 , outline_visible(false)
 198 // "inventory"
 199 , block()
 200 , block_buf()
 201 , block_transform(1.0f)
 202 , block_label()
 203 , block_visible(false)
 204 // debug overlay
 205 , counter_text()
 206 , position_text()
 207 , orientation_text()
 208 , block_text()
 209 , show_block(false)
 210 , show_entity(false)
 211 // message box
 212 , messages(env.assets.small_ui_font)
 213 , msg_timer(5000)
 214 , msg_keep(false)
 215 // crosshair
 216 , crosshair() {
 217         const float ls = env.assets.small_ui_font.LineSkip();
 218
 219         // "inventory"
 220         block_transform = glm::translate(block_transform, glm::vec3(50.0f, 50.0f, 0.0f));
 221         block_transform = glm::scale(block_transform, glm::vec3(50.0f));
 222         block_transform = glm::rotate(block_transform, 3.5f, glm::vec3(1.0f, 0.0f, 0.0f));
 223         block_transform = glm::rotate(block_transform, 0.35f, glm::vec3(0.0f, 1.0f, 0.0f));
 224         block_label.Position(
 225                 glm::vec3(50.0f, 85.0f, 0.0f),
 226                 Gravity::NORTH_WEST,
 227                 Gravity::NORTH
 228         );
 229         block_label.Foreground(glm::vec4(1.0f));
 230         block_label.Background(glm::vec4(0.5f));
 231
 232         // debug overlay
 233         counter_text.Position(glm::vec3(-25.0f, 25.0f, 0.0f), Gravity::NORTH_EAST);
 234         counter_text.Foreground(glm::vec4(1.0f));
 235         counter_text.Background(glm::vec4(0.5f));
 236         position_text.Position(glm::vec3(-25.0f, 25.0f + ls, 0.0f), Gravity::NORTH_EAST);
 237         position_text.Foreground(glm::vec4(1.0f));
 238         position_text.Background(glm::vec4(0.5f));
 239         orientation_text.Position(glm::vec3(-25.0f, 25.0f + 2 * ls, 0.0f), Gravity::NORTH_EAST);
 240         orientation_text.Foreground(glm::vec4(1.0f));
 241         orientation_text.Background(glm::vec4(0.5f));
 242         block_text.Position(glm::vec3(-25.0f, 25.0f + 4 * ls, 0.0f), Gravity::NORTH_EAST);
 243         block_text.Foreground(glm::vec4(1.0f));
 244         block_text.Background(glm::vec4(0.5f));
 245         block_text.Set(env.assets.small_ui_font, "Block: none");
 246         entity_text.Position(glm::vec3(-25.0f, 25.0f + 4 * ls, 0.0f), Gravity::NORTH_EAST);
 247         entity_text.Foreground(glm::vec4(1.0f));
 248         entity_text.Background(glm::vec4(0.5f));
 249         entity_text.Set(env.assets.small_ui_font, "Entity: none");
 250
 251         // message box
 252         messages.Position(glm::vec3(25.0f, -25.0f - 2 * ls, 0.0f), Gravity::SOUTH_WEST);
 253         messages.Foreground(glm::vec4(1.0f));
 254         messages.Background(glm::vec4(0.5f));
 255
 256         // crosshair
 257         PrimitiveMesh::Buffer buf;
 258         buf.vertices = std::vector<glm::vec3>({
 259                 { -10.0f,   0.0f, 0.0f }, { 10.0f,  0.0f, 0.0f },
 260                 {   0.0f, -10.0f, 0.0f }, {  0.0f, 10.0f, 0.0f },
 261         });
 262         buf.indices = std::vector<PrimitiveMesh::Index>({
 263                 0, 1, 2, 3
 264         });
 265         buf.colors.resize(4, { 10.0f, 10.0f, 10.0f, 1.0f });
 266         crosshair.Update(buf);
 267 }
 268
 269 namespace {
 270
 271 PrimitiveMesh::Buffer outl_buf;
 272
 273 }
 274
 275 void HUD::FocusBlock(const Chunk &chunk, int index) {
 276         const Block &block = chunk.BlockAt(index);
 277         const BlockType &type = chunk.Type(index);
 278         outl_buf.Clear();
 279         type.OutlinePrimitiveMesh(outl_buf);
 280         outline.Update(outl_buf);
 281         outline_transform = chunk.Transform(player.GetEntity().ChunkCoords());
 282         outline_transform *= chunk.ToTransform(Chunk::ToPos(index), index);
 283         outline_transform *= glm::scale(glm::vec3(1.005f));
 284         outline_visible = true;
 285         {
 286                 std::stringstream s;
 287                 s << "Block: "
 288                         << type.label
 289                         << ", face: " << block.GetFace()
 290                         << ", turn: " << block.GetTurn();
 291                 block_text.Set(env.assets.small_ui_font, s.str());
 292         }
 293         show_block = true;
 294         show_entity = false;
 295 }
 296
 297 void HUD::FocusEntity(const Entity &entity) {
 298         {
 299                 std::stringstream s;
 300                 s << "Entity: " << entity.Name();
 301                 entity_text.Set(env.assets.small_ui_font, s.str());
 302         }
 303         show_block = false;
 304         show_entity = true;
 305 }
 306
 307 void HUD::FocusNone() {
 308         outline_visible = false;
 309         show_block = false;
 310         show_entity = false;
 311 }
 312
 313 void HUD::DisplayNone() {
 314         block_visible = false;
 315 }
 316
 317 void HUD::Display(const BlockType &type) {
 318         block_buf.Clear();
 319         type.FillEntityMesh(block_buf);
 320         block.Update(block_buf);
 321
 322         block_label.Set(env.assets.small_ui_font, type.label);
 323
 324         block_visible = type.visible;
 325 }
 326
 327
 328 void HUD::UpdateDebug() {
 329         UpdateCounter();
 330         UpdatePosition();
 331         UpdateOrientation();
 332 }
 333
 334 void HUD::UpdateCounter() {
 335         std::stringstream s;
 336         s << std::setprecision(3) <<
 337                 "avg: " << env.counter.Average().running << "ms, "
 338                 "peak: " << env.counter.Peak().running << "ms";
 339         std::string text = s.str();
 340         counter_text.Set(env.assets.small_ui_font, text);
 341 }
 342
 343 void HUD::UpdatePosition() {
 344         std::stringstream s;
 345         s << std::setprecision(3) << "pos: " << player.GetEntity().AbsolutePosition();
 346         position_text.Set(env.assets.small_ui_font, s.str());
 347 }
 348
 349 void HUD::UpdateOrientation() {
 350         std::stringstream s;
 351         s << std::setprecision(3) << "pitch: " << rad2deg(player.GetEntity().Pitch())
 352                 << ", yaw: " << rad2deg(player.GetEntity().Yaw());
 353         orientation_text.Set(env.assets.small_ui_font, s.str());
 354 }
 355
 356 void HUD::PostMessage(const char *msg) {
 357         messages.PushLine(msg);
 358         msg_timer.Reset();
 359         msg_timer.Start();
 360         std::cout << msg << std::endl;
 361 }
 362
 363
 364 void HUD::Update(int dt) {
 365         msg_timer.Update(dt);
 366         if (msg_timer.HitOnce()) {
 367                 msg_timer.Stop();
 368         }
 369
 370         if (config.video.debug) {
 371                 if (env.counter.Changed()) {
 372                         UpdateCounter();
 373                 }
 374                 UpdatePosition();
 375                 UpdateOrientation();
 376         }
 377 }
 378
 379 void HUD::Render(Viewport &viewport) noexcept {
 380         // block focus
 381         if (outline_visible && config.video.world) {
 382                 PlainColor &outline_prog = viewport.WorldColorProgram();
 383                 outline_prog.SetM(outline_transform);
 384                 outline.DrawLines();
 385         }
 386
 387         // clear depth buffer so everything renders above the world
 388         viewport.ClearDepth();
 389
 390         if (config.video.hud) {
 391                 // "inventory"
 392                 if (block_visible) {
 393                         DirectionalLighting &world_prog = viewport.HUDProgram();
 394                         world_prog.SetLightDirection({ 1.0f, 3.0f, 5.0f });
 395                         // disable distance fog
 396                         world_prog.SetFogDensity(0.0f);
 397
 398                         viewport.DisableBlending();
 399                         world_prog.SetM(block_transform);
 400                         block.Draw();
 401                         block_label.Render(viewport);
 402                 }
 403
 404                 // message box
 405                 if (msg_keep || msg_timer.Running()) {
 406                         messages.Render(viewport);
 407                 }
 408
 409                 // crosshair
 410                 PlainColor &outline_prog = viewport.HUDColorProgram();
 411                 viewport.EnableInvertBlending();
 412                 viewport.SetCursor(glm::vec3(0.0f), Gravity::CENTER);
 413                 outline_prog.SetM(viewport.Cursor());
 414                 crosshair.DrawLines();
 415         }
 416
 417         // debug overlay
 418         if (config.video.debug) {
 419                 counter_text.Render(viewport);
 420                 position_text.Render(viewport);
 421                 orientation_text.Render(viewport);
 422                 if (show_block) {
 423                         block_text.Render(viewport);
 424                 } else if (show_entity) {
 425                         entity_text.Render(viewport);
 426                 }
 427         }
 428 }
 429
 430
 431 InteractiveManipulator::InteractiveManipulator(Audio &audio, const SoundBank &sounds, Entity &player)
 432 : player(player)
 433 , audio(audio)
 434 , sounds(sounds) {
 435
 436 }
 437
 438 void InteractiveManipulator::SetBlock(Chunk &chunk, int index, const Block &block) {
 439         const BlockType &old_type = chunk.Type(index);
 440         chunk.SetBlock(index, block);
 441         const BlockType &new_type = chunk.Type(index);
 442         glm::vec3 coords = chunk.ToSceneCoords(player.ChunkCoords(), Chunk::ToCoords(index));
 443         if (new_type.id == 0) {
 444                 if (old_type.remove_sound >= 0) {
 445                         audio.Play(sounds[old_type.remove_sound], coords);
 446                 }
 447         } else {
 448                 if (new_type.place_sound >= 0) {
 449                         audio.Play(sounds[new_type.place_sound], coords);
 450                 }
 451         }
 452 }
 453
 454
 455 Interface::Interface(
 456         Config &config,
 457         const Keymap &keymap,
 458         PlayerController &pc,
 459         ClientController &cc)
 460 : config(config)
 461 , keymap(keymap)
 462 , player_ctrl(pc)
 463 , client_ctrl(cc)
 464 , fwd(0)
 465 , rev(0)
 466 , slot(0)
 467 , num_slots(10)
 468 , locked(false) {
 469
 470 }
 471
 472 void Interface::Lock() {
 473         fwd = glm::ivec3(0);
 474         rev = glm::ivec3(0);
 475         locked = true;
 476 }
 477
 478 void Interface::Unlock() {
 479         locked = false;
 480 }
 481
 482 void Interface::HandlePress(const SDL_KeyboardEvent &event) {
 483         if (!config.input.keyboard) return;
 484
 485         Keymap::Action action = keymap.Lookup(event);
 486         switch (action) {
 487                 case Keymap::MOVE_FORWARD:
 488                         rev.z = 1;
 489                         UpdateMovement();
 490                         break;
 491                 case Keymap::MOVE_BACKWARD:
 492                         fwd.z = 1;
 493                         UpdateMovement();
 494                         break;
 495                 case Keymap::MOVE_LEFT:
 496                         rev.x = 1;
 497                         UpdateMovement();
 498                         break;
 499                 case Keymap::MOVE_RIGHT:
 500                         fwd.x = 1;
 501                         UpdateMovement();
 502                         break;
 503                 case Keymap::MOVE_UP:
 504                         fwd.y = 1;
 505                         UpdateMovement();
 506                         break;
 507                 case Keymap::MOVE_DOWN:
 508                         rev.y = 1;
 509                         UpdateMovement();
 510                         break;
 511
 512                 case Keymap::PRIMARY:
 513                         player_ctrl.StartPrimaryAction();
 514                         break;
 515                 case Keymap::SECONDARY:
 516                         player_ctrl.StartSecondaryAction();
 517                         break;
 518                 case Keymap::TERTIARY:
 519                         player_ctrl.StartTertiaryAction();
 520                         break;
 521
 522                 case Keymap::INV_NEXT:
 523                         InvRel(1);
 524                         break;
 525                 case Keymap::INV_PREVIOUS:
 526                         InvRel(-1);
 527                         break;
 528                 case Keymap::INV_1:
 529                 case Keymap::INV_2:
 530                 case Keymap::INV_3:
 531                 case Keymap::INV_4:
 532                 case Keymap::INV_5:
 533                 case Keymap::INV_6:
 534                 case Keymap::INV_7:
 535                 case Keymap::INV_8:
 536                 case Keymap::INV_9:
 537                 case Keymap::INV_10:
 538                         InvAbs(action - Keymap::INV_1);
 539                         break;
 540
 541                 case Keymap::EXIT:
 542                         client_ctrl.Exit();
 543                         break;
 544
 545                 case Keymap::TOGGLE_AUDIO:
 546                         config.audio.enabled = !config.audio.enabled;
 547                         client_ctrl.SetAudio(config.audio.enabled);
 548                         break;
 549                 case Keymap::TOGGLE_VIDEO:
 550                         config.video.world = !config.video.world;
 551                         client_ctrl.SetVideo(config.video.world);
 552                         break;
 553                 case Keymap::TOGGLE_HUD:
 554                         config.video.hud = !config.video.hud;
 555                         client_ctrl.SetHUD(config.video.hud);
 556                         break;
 557                 case Keymap::TOGGLE_DEBUG:
 558                         config.video.debug = !config.video.debug;
 559                         client_ctrl.SetDebug(config.video.debug);
 560                         break;
 561
 562                 default:
 563                         break;
 564         }
 565 }
 566
 567 void Interface::HandleRelease(const SDL_KeyboardEvent &event) {
 568         if (!config.input.keyboard) return;
 569
 570         switch (keymap.Lookup(event)) {
 571                 case Keymap::MOVE_FORWARD:
 572                         rev.z = 0;
 573                         UpdateMovement();
 574                         break;
 575                 case Keymap::MOVE_BACKWARD:
 576                         fwd.z = 0;
 577                         UpdateMovement();
 578                         break;
 579                 case Keymap::MOVE_LEFT:
 580                         rev.x = 0;
 581                         UpdateMovement();
 582                         break;
 583                 case Keymap::MOVE_RIGHT:
 584                         fwd.x = 0;
 585                         UpdateMovement();
 586                         break;
 587                 case Keymap::MOVE_UP:
 588                         fwd.y = 0;
 589                         UpdateMovement();
 590                         break;
 591                 case Keymap::MOVE_DOWN:
 592                         rev.y = 0;
 593                         UpdateMovement();
 594                         break;
 595
 596                 case Keymap::PRIMARY:
 597                         player_ctrl.StopPrimaryAction();
 598                         break;
 599                 case Keymap::SECONDARY:
 600                         player_ctrl.StopSecondaryAction();
 601                         break;
 602                 case Keymap::TERTIARY:
 603                         player_ctrl.StopTertiaryAction();
 604                         break;
 605
 606                 default:
 607                         break;
 608         }
 609 }
 610
 611 void Interface::Handle(const SDL_MouseMotionEvent &event) {
 612         if (locked || !config.input.mouse) return;
 613         player_ctrl.TurnHead(
 614                 event.yrel * config.input.pitch_sensitivity,
 615                 event.xrel * config.input.yaw_sensitivity);
 616 }
 617
 618 void Interface::HandlePress(const SDL_MouseButtonEvent &event) {
 619         if (!config.input.mouse) return;
 620
 621         switch (event.button) {
 622                 case SDL_BUTTON_LEFT:
 623                         player_ctrl.StartPrimaryAction();
 624                         break;
 625                 case SDL_BUTTON_RIGHT:
 626                         player_ctrl.StartSecondaryAction();
 627                         break;
 628                 case SDL_BUTTON_MIDDLE:
 629                         player_ctrl.StartTertiaryAction();
 630                         break;
 631         }
 632 }
 633
 634 void Interface::HandleRelease(const SDL_MouseButtonEvent &event) {
 635         if (!config.input.mouse) return;
 636
 637         switch (event.button) {
 638                 case SDL_BUTTON_LEFT:
 639                         player_ctrl.StopPrimaryAction();
 640                         break;
 641                 case SDL_BUTTON_RIGHT:
 642                         player_ctrl.StopSecondaryAction();
 643                         break;
 644                 case SDL_BUTTON_MIDDLE:
 645                         player_ctrl.StopTertiaryAction();
 646                         break;
 647         }
 648 }
 649
 650
 651 void Interface::Handle(const SDL_MouseWheelEvent &event) {
 652         if (!config.input.mouse) return;
 653
 654         if (event.y < 0) {
 655                 InvRel(1);
 656         } else if (event.y > 0) {
 657                 InvRel(-1);
 658         }
 659 }
 660
 661 void Interface::UpdateMovement() {
 662         player_ctrl.SetMovement(glm::vec3(fwd - rev));
 663 }
 664
 665 void Interface::InvAbs(int s) {
 666         slot = s % num_slots;
 667         while (slot < 0) {
 668                 slot += num_slots;
 669         }
 670         player_ctrl.SelectInventory(slot);
 671 }
 672
 673 void Interface::InvRel(int delta) {
 674         InvAbs(slot + delta);
 675 }
 676
 677
 678 Keymap::Keymap()
 679 : codemap{ NONE } {
 680
 681 }
 682
 683 void Keymap::Map(SDL_Scancode scancode, Action action) {
 684         if (scancode > MAX_SCANCODE) {
 685                 throw std::runtime_error("refusing to map scancode: too damn high");
 686         }
 687         codemap[scancode] = action;
 688 }
 689
 690 Keymap::Action Keymap::Lookup(SDL_Scancode scancode) const {
 691         if (scancode < NUM_SCANCODES) {
 692                 return codemap[scancode];
 693         } else {
 694                 return NONE;
 695         }
 696 }
 697
 698
 699 void Keymap::LoadDefault() {
 700         Map(SDL_SCANCODE_UP, MOVE_FORWARD);
 701         Map(SDL_SCANCODE_W, MOVE_FORWARD);
 702         Map(SDL_SCANCODE_DOWN, MOVE_BACKWARD);
 703         Map(SDL_SCANCODE_S, MOVE_BACKWARD);
 704         Map(SDL_SCANCODE_LEFT, MOVE_LEFT);
 705         Map(SDL_SCANCODE_A, MOVE_LEFT);
 706         Map(SDL_SCANCODE_RIGHT, MOVE_RIGHT);
 707         Map(SDL_SCANCODE_D, MOVE_RIGHT);
 708         Map(SDL_SCANCODE_SPACE, MOVE_UP);
 709         Map(SDL_SCANCODE_RSHIFT, MOVE_UP);
 710         Map(SDL_SCANCODE_LSHIFT, MOVE_DOWN);
 711         Map(SDL_SCANCODE_LCTRL, MOVE_DOWN);
 712         Map(SDL_SCANCODE_RCTRL, MOVE_DOWN);
 713
 714         Map(SDL_SCANCODE_TAB, INV_NEXT);
 715         Map(SDL_SCANCODE_RIGHTBRACKET, INV_NEXT);
 716         Map(SDL_SCANCODE_LEFTBRACKET, INV_PREVIOUS);
 717         Map(SDL_SCANCODE_1, INV_1);
 718         Map(SDL_SCANCODE_2, INV_2);
 719         Map(SDL_SCANCODE_3, INV_3);
 720         Map(SDL_SCANCODE_4, INV_4);
 721         Map(SDL_SCANCODE_5, INV_5);
 722         Map(SDL_SCANCODE_6, INV_6);
 723         Map(SDL_SCANCODE_7, INV_7);
 724         Map(SDL_SCANCODE_8, INV_8);
 725         Map(SDL_SCANCODE_9, INV_9);
 726         Map(SDL_SCANCODE_0, INV_10);
 727
 728         Map(SDL_SCANCODE_INSERT, SECONDARY);
 729         Map(SDL_SCANCODE_RETURN, SECONDARY);
 730         Map(SDL_SCANCODE_MENU, TERTIARY);
 731         Map(SDL_SCANCODE_DELETE, PRIMARY);
 732         Map(SDL_SCANCODE_BACKSPACE, PRIMARY);
 733
 734         Map(SDL_SCANCODE_F1, TOGGLE_HUD);
 735         Map(SDL_SCANCODE_F2, TOGGLE_VIDEO);
 736         Map(SDL_SCANCODE_F3, TOGGLE_DEBUG);
 737         Map(SDL_SCANCODE_F4, TOGGLE_AUDIO);
 738
 739         Map(SDL_SCANCODE_ESCAPE, EXIT);
 740 }
 741
 742
 743 void Keymap::Load(std::istream &is) {
 744         TokenStreamReader in(is);
 745         std::string key_name;
 746         std::string action_name;
 747         SDL_Scancode key;
 748         Action action;
 749         while (in.HasMore()) {
 750                 if (in.Peek().type == Token::STRING) {
 751                         in.ReadString(key_name);
 752                         key = SDL_GetScancodeFromName(key_name.c_str());
 753                 } else {
 754                         key = SDL_Scancode(in.GetInt());
 755                 }
 756                 in.Skip(Token::EQUALS);
 757                 in.ReadIdentifier(action_name);
 758                 action = StringToAction(action_name);
 759                 if (in.HasMore() && in.Peek().type == Token::SEMICOLON) {
 760                         in.Skip(Token::SEMICOLON);
 761                 }
 762                 Map(key, action);
 763         }
 764 }
 765
 766 void Keymap::Save(std::ostream &out) {
 767         for (unsigned int i = 0; i < NUM_SCANCODES; ++i) {
 768                 if (codemap[i] == NONE) continue;
 769
 770                 const char *str = SDL_GetScancodeName(SDL_Scancode(i));
 771                 if (str && *str) {
 772                         out << '"';
 773                         while (*str) {
 774                                 if (*str == '"') {
 775                                         out << "\\\"";
 776                                 } else {
 777                                         out << *str;
 778                                 }
 779                                 ++str;
 780                         }
 781                         out << '"';
 782                 } else {
 783                         out << i;
 784                 }
 785
 786                 out << " = " << ActionToString(codemap[i]) << std::endl;;
 787         }
 788 }
 789
 790
 791 namespace {
 792
 793 std::map<std::string, Keymap::Action> action_map = {
 794         { "none", Keymap::NONE },
 795         { "move_forward", Keymap::MOVE_FORWARD },
 796         { "move_backward", Keymap::MOVE_BACKWARD },
 797         { "move_left", Keymap::MOVE_LEFT },
 798         { "move_right", Keymap::MOVE_RIGHT },
 799         { "move_up", Keymap::MOVE_UP },
 800         { "move_down", Keymap::MOVE_DOWN },
 801
 802         { "primary", Keymap::PRIMARY },
 803         { "secondary", Keymap::SECONDARY },
 804         { "tertiary", Keymap::TERTIARY },
 805
 806         { "inventory_next", Keymap::INV_NEXT },
 807         { "inventory_prev", Keymap::INV_PREVIOUS },
 808         { "inventory_1", Keymap::INV_1 },
 809         { "inventory_2", Keymap::INV_2 },
 810         { "inventory_3", Keymap::INV_3 },
 811         { "inventory_4", Keymap::INV_4 },
 812         { "inventory_5", Keymap::INV_5 },
 813         { "inventory_6", Keymap::INV_6 },
 814         { "inventory_7", Keymap::INV_7 },
 815         { "inventory_8", Keymap::INV_8 },
 816         { "inventory_9", Keymap::INV_9 },
 817         { "inventory_10", Keymap::INV_10 },
 818
 819         { "toggle_audio", Keymap::TOGGLE_AUDIO },
 820         { "toggle_video", Keymap::TOGGLE_VIDEO },
 821         { "toggle_hud", Keymap::TOGGLE_HUD },
 822         { "toggle_debug", Keymap::TOGGLE_DEBUG },
 823
 824         { "exit", Keymap::EXIT },
 825 };
 826
 827 }
 828
 829 const char *Keymap::ActionToString(Action action) {
 830         for (const auto &entry : action_map) {
 831                 if (action == entry.second) {
 832                         return entry.first.c_str();
 833                 }
 834         }
 835         return "none";
 836 }
 837
 838 Keymap::Action Keymap::StringToAction(const std::string &str) {
 839         auto entry = action_map.find(str);
 840         if (entry != action_map.end()) {
 841                 return entry->second;
 842         } else {
 843                 std::cerr << "unknown action \"" << str << '"' << std::endl;
 844                 return NONE;
 845         }
 846 }
 847
 848 }