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 "../geometry/distance.hpp"
  17 #include "../graphics/Font.hpp"
  18 #include "../graphics/Viewport.hpp"
  19 #include "../io/TokenStreamReader.hpp"
  20 #include "../model/bounds.hpp"
  21 #include "../net/CongestionControl.hpp"
  22 #include "../world/BlockLookup.hpp"
  23 #include "../world/World.hpp"
  24 #include "../world/WorldManipulator.hpp"
  25
  26 #include <algorithm>
  27 #include <cmath>
  28 #include <iostream>
  29 #include <map>
  30 #include <sstream>
  31 #include <glm/gtc/matrix_transform.hpp>
  32 #include <glm/gtx/rotate_vector.hpp>
  33 #include <glm/gtx/io.hpp>
  34
  35
  36 namespace blank {
  37
  38 PlayerController::PlayerController(World &world, Player &player)
  39 : world(world)
  40 , player(player)
  41 , move_dir(0.0f)
  42 , dirty(true)
  43 , aim_world()
  44 , aim_entity() {
  45         player.GetEntity().SetController(*this);
  46 }
  47
  48 PlayerController::~PlayerController() {
  49         if (&player.GetEntity().GetController() == this) {
  50                 player.GetEntity().UnsetController();
  51         }
  52 }
  53
  54 void PlayerController::SetMovement(const glm::vec3 &m) noexcept {
  55         if (dot(m, m) > 1.0f) {
  56                 move_dir = normalize(m);
  57         } else {
  58                 move_dir = m;
  59         }
  60         Invalidate();
  61 }
  62
  63 glm::vec3 PlayerController::ControlForce(const Entity &e, const EntityState &s) const {
  64         if (!iszero(move_dir)) {
  65                 // scale input by max velocity, apply yaw, and transform to world space
  66                 return TargetVelocity(glm::vec3(glm::vec4(rotateY(move_dir * e.MaxVelocity(), s.yaw), 0.0f) * transpose(e.Transform())), s, 5.0f);
  67         } else {
  68                 // target velocity of 0 is the same as halt
  69                 return Halt(s, 5.0f);
  70         }
  71 }
  72
  73 void PlayerController::TurnHead(float dp, float dy) noexcept {
  74         player.GetEntity().TurnHead(dp, dy);
  75 }
  76
  77 float PlayerController::GetPitch() const noexcept {
  78         return player.GetEntity().Pitch();
  79 }
  80
  81 float PlayerController::GetYaw() const noexcept {
  82         return player.GetEntity().Yaw();
  83 }
  84
  85 void PlayerController::SelectInventory(int i) noexcept {
  86         player.SetInventorySlot(i);
  87 }
  88
  89 int PlayerController::InventorySlot() const noexcept {
  90         return player.GetInventorySlot();
  91 }
  92
  93 void PlayerController::Invalidate() noexcept {
  94         dirty = true;
  95 }
  96
  97 void PlayerController::UpdatePlayer() noexcept {
  98         if (dirty) {
  99                 Ray aim = player.Aim();
 100                 if (!world.Intersection(aim, glm::mat4(1.0f), player.GetEntity().ChunkCoords(), aim_world)) {
 101                         aim_world = WorldCollision();
 102                 }
 103                 if (!world.Intersection(aim, glm::mat4(1.0f), player.GetEntity(), aim_entity)) {
 104                         aim_entity = EntityCollision();
 105                 }
 106                 if (aim_world && aim_entity) {
 107                         // got both, pick the closest one
 108                         if (aim_world.depth < aim_entity.depth) {
 109                                 aim_entity = EntityCollision();
 110                         } else {
 111                                 aim_world = WorldCollision();
 112                         }
 113                 }
 114                 dirty = false;
 115         }
 116 }
 117
 118
 119 DirectInput::DirectInput(World &world, Player &player, WorldManipulator &manip)
 120 : PlayerController(world, player)
 121 , manip(manip)
 122 , place_timer(0.25f)
 123 , remove_timer(0.25f) {
 124
 125 }
 126
 127 void DirectInput::Update(Entity &, float dt) {
 128         Invalidate(); // world has changed in the meantime
 129         UpdatePlayer();
 130
 131         remove_timer.Update(dt);
 132         if (remove_timer.Hit()) {
 133                 RemoveBlock();
 134         }
 135
 136         place_timer.Update(dt);
 137         if (place_timer.Hit()) {
 138                 PlaceBlock();
 139         }
 140 }
 141
 142 void DirectInput::StartPrimaryAction() {
 143         if (!remove_timer.Running()) {
 144                 RemoveBlock();
 145                 remove_timer.Start();
 146         }
 147 }
 148
 149 void DirectInput::StopPrimaryAction() {
 150         remove_timer.Stop();
 151 }
 152
 153 void DirectInput::StartSecondaryAction() {
 154         if (!place_timer.Running()) {
 155                 PlaceBlock();
 156                 place_timer.Start();
 157         }
 158 }
 159
 160 void DirectInput::StopSecondaryAction() {
 161         place_timer.Stop();
 162 }
 163
 164 void DirectInput::StartTertiaryAction() {
 165         PickBlock();
 166 }
 167
 168 void DirectInput::StopTertiaryAction() {
 169         // nothing
 170 }
 171
 172 void DirectInput::PickBlock() {
 173         UpdatePlayer();
 174         if (!BlockFocus()) return;
 175         SelectInventory(BlockFocus().GetBlock().type - 1);
 176 }
 177
 178 void DirectInput::PlaceBlock() {
 179         UpdatePlayer();
 180         if (!BlockFocus()) return;
 181
 182         BlockLookup next_block(BlockFocus().chunk, BlockFocus().BlockPos(), Block::NormalFace(BlockFocus().normal));
 183         if (!next_block) {
 184                 return;
 185         }
 186         manip.SetBlock(next_block.GetChunk(), next_block.GetBlockIndex(), Block(InventorySlot() + 1));
 187         Invalidate();
 188 }
 189
 190 void DirectInput::RemoveBlock() {
 191         UpdatePlayer();
 192         if (!BlockFocus()) return;
 193         manip.SetBlock(BlockFocus().GetChunk(), BlockFocus().block, Block(0));
 194         Invalidate();
 195 }
 196
 197
 198 HUD::HUD(Environment &env, Config &config, const Player &player)
 199 : env(env)
 200 , config(config)
 201 , player(player)
 202 // block focus
 203 , outline()
 204 , outline_transform(1.0f)
 205 , outline_visible(false)
 206 // "inventory"
 207 , block()
 208 , block_buf()
 209 , block_transform(1.0f)
 210 , block_label()
 211 , block_visible(false)
 212 // debug overlay
 213 , counter_text()
 214 , position_text()
 215 , orientation_text()
 216 , block_text()
 217 , show_block(false)
 218 , show_entity(false)
 219 // net stats
 220 , bandwidth_text()
 221 , rtt_text()
 222 , packet_loss_text()
 223 , show_net(false)
 224 // message box
 225 , messages(env.assets.small_ui_font)
 226 , msg_timer(5000)
 227 , msg_keep(false)
 228 // crosshair
 229 , crosshair() {
 230         const float ls = env.assets.small_ui_font.LineSkip();
 231
 232         // "inventory"
 233         block_transform = glm::translate(block_transform, glm::vec3(50.0f, 50.0f, 0.0f));
 234         block_transform = glm::scale(block_transform, glm::vec3(50.0f));
 235         block_transform = glm::rotate(block_transform, 3.5f, glm::vec3(1.0f, 0.0f, 0.0f));
 236         block_transform = glm::rotate(block_transform, 0.35f, glm::vec3(0.0f, 1.0f, 0.0f));
 237         block_label.Position(
 238                 glm::vec3(50.0f, 85.0f, 0.0f),
 239                 Gravity::NORTH_WEST,
 240                 Gravity::NORTH
 241         );
 242         block_label.Foreground(glm::vec4(1.0f));
 243         block_label.Background(glm::vec4(0.5f));
 244
 245         // debug overlay
 246         counter_text.Position(glm::vec3(-25.0f, 25.0f, 0.0f), Gravity::NORTH_EAST);
 247         counter_text.Foreground(glm::vec4(1.0f));
 248         counter_text.Background(glm::vec4(0.5f));
 249         position_text.Position(glm::vec3(-25.0f, 25.0f + ls, 0.0f), Gravity::NORTH_EAST);
 250         position_text.Foreground(glm::vec4(1.0f));
 251         position_text.Background(glm::vec4(0.5f));
 252         orientation_text.Position(glm::vec3(-25.0f, 25.0f + 2 * ls, 0.0f), Gravity::NORTH_EAST);
 253         orientation_text.Foreground(glm::vec4(1.0f));
 254         orientation_text.Background(glm::vec4(0.5f));
 255         block_text.Position(glm::vec3(-25.0f, 25.0f + 4 * ls, 0.0f), Gravity::NORTH_EAST);
 256         block_text.Foreground(glm::vec4(1.0f));
 257         block_text.Background(glm::vec4(0.5f));
 258         block_text.Set(env.assets.small_ui_font, "Block: none");
 259         entity_text.Position(glm::vec3(-25.0f, 25.0f + 4 * ls, 0.0f), Gravity::NORTH_EAST);
 260         entity_text.Foreground(glm::vec4(1.0f));
 261         entity_text.Background(glm::vec4(0.5f));
 262         entity_text.Set(env.assets.small_ui_font, "Entity: none");
 263
 264         // net stats
 265         bandwidth_text.Position(glm::vec3(-25.0f, 25.0f + 6 * ls, 0.0f), Gravity::NORTH_EAST);
 266         bandwidth_text.Foreground(glm::vec4(1.0f));
 267         bandwidth_text.Background(glm::vec4(0.5f));
 268         bandwidth_text.Set(env.assets.small_ui_font, "TX: 0.0KB/s RX: 0.0KB/s");
 269         rtt_text.Position(glm::vec3(-25.0f, 25.0f + 7 * ls, 0.0f), Gravity::NORTH_EAST);
 270         rtt_text.Foreground(glm::vec4(1.0f));
 271         rtt_text.Background(glm::vec4(0.5f));
 272         rtt_text.Set(env.assets.small_ui_font, "RTT: unavailable");
 273         packet_loss_text.Position(glm::vec3(-25.0f, 25.0f + 8 * ls, 0.0f), Gravity::NORTH_EAST);
 274         packet_loss_text.Foreground(glm::vec4(1.0f));
 275         packet_loss_text.Background(glm::vec4(0.5f));
 276         packet_loss_text.Set(env.assets.small_ui_font, "Packet loss: 0.0%");
 277
 278         // message box
 279         messages.Position(glm::vec3(25.0f, -25.0f - 2 * ls, 0.0f), Gravity::SOUTH_WEST);
 280         messages.Foreground(glm::vec4(1.0f));
 281         messages.Background(glm::vec4(0.5f));
 282
 283         // crosshair
 284         PrimitiveMesh::Buffer buf;
 285         buf.vertices = std::vector<glm::vec3>({
 286                 { -10.0f,   0.0f, 0.0f }, { 10.0f,  0.0f, 0.0f },
 287                 {   0.0f, -10.0f, 0.0f }, {  0.0f, 10.0f, 0.0f },
 288         });
 289         buf.indices = std::vector<PrimitiveMesh::Index>({
 290                 0, 1, 2, 3
 291         });
 292         buf.colors.resize(4, { 10.0f, 10.0f, 10.0f, 1.0f });
 293         crosshair.Update(buf);
 294 }
 295
 296 namespace {
 297
 298 PrimitiveMesh::Buffer outl_buf;
 299
 300 }
 301
 302 void HUD::FocusBlock(const Chunk &chunk, int index) {
 303         const Block &block = chunk.BlockAt(index);
 304         const BlockType &type = chunk.Type(index);
 305         outl_buf.Clear();
 306         type.OutlinePrimitiveMesh(outl_buf);
 307         outline.Update(outl_buf);
 308         outline_transform = chunk.Transform(player.GetEntity().ChunkCoords());
 309         outline_transform *= chunk.ToTransform(Chunk::ToPos(index), index);
 310         outline_transform *= glm::scale(glm::vec3(1.005f));
 311         outline_visible = true;
 312         {
 313                 std::stringstream s;
 314                 s << "Block: "
 315                         << type.label
 316                         << ", face: " << block.GetFace()
 317                         << ", turn: " << block.GetTurn();
 318                 block_text.Set(env.assets.small_ui_font, s.str());
 319         }
 320         show_block = true;
 321         show_entity = false;
 322 }
 323
 324 void HUD::FocusEntity(const Entity &entity) {
 325         {
 326                 std::stringstream s;
 327                 s << "Entity: " << entity.Name();
 328                 entity_text.Set(env.assets.small_ui_font, s.str());
 329         }
 330         show_block = false;
 331         show_entity = true;
 332 }
 333
 334 void HUD::FocusNone() {
 335         outline_visible = false;
 336         show_block = false;
 337         show_entity = false;
 338 }
 339
 340 void HUD::DisplayNone() {
 341         block_visible = false;
 342 }
 343
 344 void HUD::Display(const BlockType &type) {
 345         block_buf.Clear();
 346         type.FillEntityMesh(block_buf);
 347         block.Update(block_buf);
 348
 349         block_label.Set(env.assets.small_ui_font, type.label);
 350
 351         block_visible = type.visible;
 352 }
 353
 354
 355 void HUD::UpdateDebug() {
 356         UpdateCounter();
 357         UpdatePosition();
 358         UpdateOrientation();
 359 }
 360
 361 void HUD::UpdateCounter() {
 362         std::stringstream s;
 363         s << std::setprecision(3) <<
 364                 "avg: " << env.counter.Average().running << "ms, "
 365                 "peak: " << env.counter.Peak().running << "ms";
 366         std::string text = s.str();
 367         counter_text.Set(env.assets.small_ui_font, text);
 368 }
 369
 370 void HUD::UpdatePosition() {
 371         std::stringstream s;
 372         s << std::setprecision(3) << "pos: " << player.GetEntity().AbsolutePosition();
 373         position_text.Set(env.assets.small_ui_font, s.str());
 374 }
 375
 376 void HUD::UpdateOrientation() {
 377         std::stringstream s;
 378         s << std::setprecision(3) << "pitch: " << glm::degrees(player.GetEntity().Pitch())
 379                 << ", yaw: " << glm::degrees(player.GetEntity().Yaw());
 380         orientation_text.Set(env.assets.small_ui_font, s.str());
 381 }
 382
 383 void HUD::PostMessage(const char *msg) {
 384         messages.PushLine(msg);
 385         msg_timer.Reset();
 386         msg_timer.Start();
 387         std::cout << msg << std::endl;
 388 }
 389
 390
 391 void HUD::UpdateNetStats(const CongestionControl &stat) {
 392         if (!config.video.debug) return;
 393
 394         std::stringstream s;
 395         s << std::fixed << std::setprecision(1)
 396                 << "TX: " << stat.Upstream()
 397                 << "KB/s, RX: " << stat.Downstream() << "KB/s";
 398         bandwidth_text.Set(env.assets.small_ui_font, s.str());
 399
 400         s.str("");
 401         s << "RTT: " << stat.RoundTripTime() << "ms";
 402         rtt_text.Set(env.assets.small_ui_font, s.str());
 403
 404         s.str("");
 405         s << "Packet loss: " << (stat.PacketLoss() * 100.0f) << "%";
 406         packet_loss_text.Set(env.assets.small_ui_font, s.str());
 407
 408         show_net = true;
 409 }
 410
 411
 412 void HUD::Update(int dt) {
 413         msg_timer.Update(dt);
 414         if (msg_timer.HitOnce()) {
 415                 msg_timer.Stop();
 416         }
 417
 418         if (config.video.debug) {
 419                 if (env.counter.Changed()) {
 420                         UpdateCounter();
 421                 }
 422                 UpdatePosition();
 423                 UpdateOrientation();
 424         }
 425 }
 426
 427 void HUD::Render(Viewport &viewport) noexcept {
 428         // block focus
 429         if (outline_visible && config.video.world) {
 430                 PlainColor &outline_prog = viewport.WorldColorProgram();
 431                 outline_prog.SetM(outline_transform);
 432                 outline.DrawLines();
 433         }
 434
 435         // clear depth buffer so everything renders above the world
 436         viewport.ClearDepth();
 437
 438         if (config.video.hud) {
 439                 // "inventory"
 440                 if (block_visible) {
 441                         DirectionalLighting &world_prog = viewport.HUDProgram();
 442                         world_prog.SetLightDirection({ 1.0f, 3.0f, 5.0f });
 443                         world_prog.SetLightColor({ 1.0f, 1.0f, 1.0f });
 444                         world_prog.SetAmbientColor({ 0.1f, 0.1f, 0.1f });
 445                         // disable distance fog
 446                         world_prog.SetFogDensity(0.0f);
 447
 448                         viewport.DisableBlending();
 449                         world_prog.SetM(block_transform);
 450                         block.Draw();
 451                         block_label.Render(viewport);
 452                 }
 453
 454                 // message box
 455                 if (msg_keep || msg_timer.Running()) {
 456                         messages.Render(viewport);
 457                 }
 458
 459                 // crosshair
 460                 PlainColor &outline_prog = viewport.HUDColorProgram();
 461                 viewport.EnableInvertBlending();
 462                 viewport.SetCursor(glm::vec3(0.0f), Gravity::CENTER);
 463                 outline_prog.SetM(viewport.Cursor());
 464                 crosshair.DrawLines();
 465         }
 466
 467         // debug overlay
 468         if (config.video.debug) {
 469                 counter_text.Render(viewport);
 470                 position_text.Render(viewport);
 471                 orientation_text.Render(viewport);
 472                 if (show_block) {
 473                         block_text.Render(viewport);
 474                 } else if (show_entity) {
 475                         entity_text.Render(viewport);
 476                 }
 477                 if (show_net) {
 478                         bandwidth_text.Render(viewport);
 479                         rtt_text.Render(viewport);
 480                         packet_loss_text.Render(viewport);
 481                 }
 482         }
 483 }
 484
 485
 486 InteractiveManipulator::InteractiveManipulator(Audio &audio, const SoundBank &sounds, Entity &player)
 487 : player(player)
 488 , audio(audio)
 489 , sounds(sounds) {
 490
 491 }
 492
 493 void InteractiveManipulator::SetBlock(Chunk &chunk, int index, const Block &block) {
 494         const BlockType &old_type = chunk.Type(index);
 495         chunk.SetBlock(index, block);
 496         const BlockType &new_type = chunk.Type(index);
 497         glm::vec3 coords = chunk.ToSceneCoords(player.ChunkCoords(), Chunk::ToCoords(index));
 498         if (new_type.id == 0) {
 499                 if (old_type.remove_sound >= 0) {
 500                         audio.Play(sounds[old_type.remove_sound], coords);
 501                 }
 502         } else {
 503                 if (new_type.place_sound >= 0) {
 504                         audio.Play(sounds[new_type.place_sound], coords);
 505                 }
 506         }
 507 }
 508
 509
 510 Interface::Interface(
 511         Config &config,
 512         const Keymap &keymap,
 513         PlayerController &pc,
 514         ClientController &cc)
 515 : config(config)
 516 , keymap(keymap)
 517 , player_ctrl(pc)
 518 , client_ctrl(cc)
 519 , fwd(0)
 520 , rev(0)
 521 , num_slots(10)
 522 , locked(false) {
 523
 524 }
 525
 526 void Interface::Lock() {
 527         fwd = glm::ivec3(0);
 528         rev = glm::ivec3(0);
 529         locked = true;
 530 }
 531
 532 void Interface::Unlock() {
 533         locked = false;
 534 }
 535
 536 void Interface::HandlePress(const SDL_KeyboardEvent &event) {
 537         if (!config.input.keyboard) return;
 538
 539         Keymap::Action action = keymap.Lookup(event);
 540         switch (action) {
 541                 case Keymap::MOVE_FORWARD:
 542                         rev.z = 1;
 543                         UpdateMovement();
 544                         break;
 545                 case Keymap::MOVE_BACKWARD:
 546                         fwd.z = 1;
 547                         UpdateMovement();
 548                         break;
 549                 case Keymap::MOVE_LEFT:
 550                         rev.x = 1;
 551                         UpdateMovement();
 552                         break;
 553                 case Keymap::MOVE_RIGHT:
 554                         fwd.x = 1;
 555                         UpdateMovement();
 556                         break;
 557                 case Keymap::MOVE_UP:
 558                         fwd.y = 1;
 559                         UpdateMovement();
 560                         break;
 561                 case Keymap::MOVE_DOWN:
 562                         rev.y = 1;
 563                         UpdateMovement();
 564                         break;
 565
 566                 case Keymap::PRIMARY:
 567                         player_ctrl.StartPrimaryAction();
 568                         break;
 569                 case Keymap::SECONDARY:
 570                         player_ctrl.StartSecondaryAction();
 571                         break;
 572                 case Keymap::TERTIARY:
 573                         player_ctrl.StartTertiaryAction();
 574                         break;
 575
 576                 case Keymap::INV_NEXT:
 577                         InvRel(1);
 578                         break;
 579                 case Keymap::INV_PREVIOUS:
 580                         InvRel(-1);
 581                         break;
 582                 case Keymap::INV_1:
 583                 case Keymap::INV_2:
 584                 case Keymap::INV_3:
 585                 case Keymap::INV_4:
 586                 case Keymap::INV_5:
 587                 case Keymap::INV_6:
 588                 case Keymap::INV_7:
 589                 case Keymap::INV_8:
 590                 case Keymap::INV_9:
 591                 case Keymap::INV_10:
 592                         InvAbs(action - Keymap::INV_1);
 593                         break;
 594
 595                 case Keymap::EXIT:
 596                         client_ctrl.Exit();
 597                         break;
 598
 599                 case Keymap::TOGGLE_AUDIO:
 600                         config.audio.enabled = !config.audio.enabled;
 601                         client_ctrl.SetAudio(config.audio.enabled);
 602                         break;
 603                 case Keymap::TOGGLE_VIDEO:
 604                         config.video.world = !config.video.world;
 605                         client_ctrl.SetVideo(config.video.world);
 606                         break;
 607                 case Keymap::TOGGLE_HUD:
 608                         config.video.hud = !config.video.hud;
 609                         client_ctrl.SetHUD(config.video.hud);
 610                         break;
 611                 case Keymap::TOGGLE_DEBUG:
 612                         config.video.debug = !config.video.debug;
 613                         client_ctrl.SetDebug(config.video.debug);
 614                         break;
 615
 616                 default:
 617                         break;
 618         }
 619 }
 620
 621 void Interface::HandleRelease(const SDL_KeyboardEvent &event) {
 622         if (!config.input.keyboard) return;
 623
 624         switch (keymap.Lookup(event)) {
 625                 case Keymap::MOVE_FORWARD:
 626                         rev.z = 0;
 627                         UpdateMovement();
 628                         break;
 629                 case Keymap::MOVE_BACKWARD:
 630                         fwd.z = 0;
 631                         UpdateMovement();
 632                         break;
 633                 case Keymap::MOVE_LEFT:
 634                         rev.x = 0;
 635                         UpdateMovement();
 636                         break;
 637                 case Keymap::MOVE_RIGHT:
 638                         fwd.x = 0;
 639                         UpdateMovement();
 640                         break;
 641                 case Keymap::MOVE_UP:
 642                         fwd.y = 0;
 643                         UpdateMovement();
 644                         break;
 645                 case Keymap::MOVE_DOWN:
 646                         rev.y = 0;
 647                         UpdateMovement();
 648                         break;
 649
 650                 case Keymap::PRIMARY:
 651                         player_ctrl.StopPrimaryAction();
 652                         break;
 653                 case Keymap::SECONDARY:
 654                         player_ctrl.StopSecondaryAction();
 655                         break;
 656                 case Keymap::TERTIARY:
 657                         player_ctrl.StopTertiaryAction();
 658                         break;
 659
 660                 default:
 661                         break;
 662         }
 663 }
 664
 665 void Interface::Handle(const SDL_MouseMotionEvent &event) {
 666         if (locked || !config.input.mouse) return;
 667         player_ctrl.TurnHead(
 668                 event.yrel * config.input.pitch_sensitivity,
 669                 event.xrel * config.input.yaw_sensitivity);
 670 }
 671
 672 void Interface::HandlePress(const SDL_MouseButtonEvent &event) {
 673         if (!config.input.mouse) return;
 674
 675         switch (event.button) {
 676                 case SDL_BUTTON_LEFT:
 677                         player_ctrl.StartPrimaryAction();
 678                         break;
 679                 case SDL_BUTTON_RIGHT:
 680                         player_ctrl.StartSecondaryAction();
 681                         break;
 682                 case SDL_BUTTON_MIDDLE:
 683                         player_ctrl.StartTertiaryAction();
 684                         break;
 685         }
 686 }
 687
 688 void Interface::HandleRelease(const SDL_MouseButtonEvent &event) {
 689         if (!config.input.mouse) return;
 690
 691         switch (event.button) {
 692                 case SDL_BUTTON_LEFT:
 693                         player_ctrl.StopPrimaryAction();
 694                         break;
 695                 case SDL_BUTTON_RIGHT:
 696                         player_ctrl.StopSecondaryAction();
 697                         break;
 698                 case SDL_BUTTON_MIDDLE:
 699                         player_ctrl.StopTertiaryAction();
 700                         break;
 701         }
 702 }
 703
 704
 705 void Interface::Handle(const SDL_MouseWheelEvent &event) {
 706         if (!config.input.mouse) return;
 707
 708         if (event.y < 0) {
 709                 InvRel(1);
 710         } else if (event.y > 0) {
 711                 InvRel(-1);
 712         }
 713 }
 714
 715 void Interface::UpdateMovement() {
 716         player_ctrl.SetMovement(glm::vec3(fwd - rev));
 717 }
 718
 719 void Interface::InvAbs(int s) {
 720         int slot = s % num_slots;
 721         while (slot < 0) {
 722                 slot += num_slots;
 723         }
 724         player_ctrl.SelectInventory(slot);
 725 }
 726
 727 void Interface::InvRel(int delta) {
 728         InvAbs(player_ctrl.GetPlayer().GetInventorySlot() + delta);
 729 }
 730
 731
 732 Keymap::Keymap()
 733 : codemap{ NONE } {
 734
 735 }
 736
 737 void Keymap::Map(SDL_Scancode scancode, Action action) {
 738         if (scancode > MAX_SCANCODE) {
 739                 throw std::runtime_error("refusing to map scancode: too damn high");
 740         }
 741         codemap[scancode] = action;
 742 }
 743
 744 Keymap::Action Keymap::Lookup(SDL_Scancode scancode) const {
 745         if (scancode < NUM_SCANCODES) {
 746                 return codemap[scancode];
 747         } else {
 748                 return NONE;
 749         }
 750 }
 751
 752
 753 void Keymap::LoadDefault() {
 754         Map(SDL_SCANCODE_UP, MOVE_FORWARD);
 755         Map(SDL_SCANCODE_W, MOVE_FORWARD);
 756         Map(SDL_SCANCODE_DOWN, MOVE_BACKWARD);
 757         Map(SDL_SCANCODE_S, MOVE_BACKWARD);
 758         Map(SDL_SCANCODE_LEFT, MOVE_LEFT);
 759         Map(SDL_SCANCODE_A, MOVE_LEFT);
 760         Map(SDL_SCANCODE_RIGHT, MOVE_RIGHT);
 761         Map(SDL_SCANCODE_D, MOVE_RIGHT);
 762         Map(SDL_SCANCODE_SPACE, MOVE_UP);
 763         Map(SDL_SCANCODE_RSHIFT, MOVE_UP);
 764         Map(SDL_SCANCODE_LSHIFT, MOVE_DOWN);
 765         Map(SDL_SCANCODE_LCTRL, MOVE_DOWN);
 766         Map(SDL_SCANCODE_RCTRL, MOVE_DOWN);
 767
 768         Map(SDL_SCANCODE_TAB, INV_NEXT);
 769         Map(SDL_SCANCODE_RIGHTBRACKET, INV_NEXT);
 770         Map(SDL_SCANCODE_LEFTBRACKET, INV_PREVIOUS);
 771         Map(SDL_SCANCODE_1, INV_1);
 772         Map(SDL_SCANCODE_2, INV_2);
 773         Map(SDL_SCANCODE_3, INV_3);
 774         Map(SDL_SCANCODE_4, INV_4);
 775         Map(SDL_SCANCODE_5, INV_5);
 776         Map(SDL_SCANCODE_6, INV_6);
 777         Map(SDL_SCANCODE_7, INV_7);
 778         Map(SDL_SCANCODE_8, INV_8);
 779         Map(SDL_SCANCODE_9, INV_9);
 780         Map(SDL_SCANCODE_0, INV_10);
 781
 782         Map(SDL_SCANCODE_INSERT, SECONDARY);
 783         Map(SDL_SCANCODE_RETURN, SECONDARY);
 784         Map(SDL_SCANCODE_MENU, TERTIARY);
 785         Map(SDL_SCANCODE_DELETE, PRIMARY);
 786         Map(SDL_SCANCODE_BACKSPACE, PRIMARY);
 787
 788         Map(SDL_SCANCODE_F1, TOGGLE_HUD);
 789         Map(SDL_SCANCODE_F2, TOGGLE_VIDEO);
 790         Map(SDL_SCANCODE_F3, TOGGLE_DEBUG);
 791         Map(SDL_SCANCODE_F4, TOGGLE_AUDIO);
 792
 793         Map(SDL_SCANCODE_ESCAPE, EXIT);
 794 }
 795
 796
 797 void Keymap::Load(std::istream &is) {
 798         TokenStreamReader in(is);
 799         std::string key_name;
 800         std::string action_name;
 801         SDL_Scancode key;
 802         Action action;
 803         while (in.HasMore()) {
 804                 if (in.Peek().type == Token::STRING) {
 805                         in.ReadString(key_name);
 806                         key = SDL_GetScancodeFromName(key_name.c_str());
 807                 } else {
 808                         key = SDL_Scancode(in.GetInt());
 809                 }
 810                 in.Skip(Token::EQUALS);
 811                 in.ReadIdentifier(action_name);
 812                 action = StringToAction(action_name);
 813                 if (in.HasMore() && in.Peek().type == Token::SEMICOLON) {
 814                         in.Skip(Token::SEMICOLON);
 815                 }
 816                 Map(key, action);
 817         }
 818 }
 819
 820 void Keymap::Save(std::ostream &out) {
 821         for (unsigned int i = 0; i < NUM_SCANCODES; ++i) {
 822                 if (codemap[i] == NONE) continue;
 823
 824                 const char *str = SDL_GetScancodeName(SDL_Scancode(i));
 825                 if (str && *str) {
 826                         out << '"';
 827                         while (*str) {
 828                                 if (*str == '"') {
 829                                         out << "\\\"";
 830                                 } else {
 831                                         out << *str;
 832                                 }
 833                                 ++str;
 834                         }
 835                         out << '"';
 836                 } else {
 837                         out << i;
 838                 }
 839
 840                 out << " = " << ActionToString(codemap[i]) << std::endl;;
 841         }
 842 }
 843
 844
 845 namespace {
 846
 847 std::map<std::string, Keymap::Action> action_map = {
 848         { "none", Keymap::NONE },
 849         { "move_forward", Keymap::MOVE_FORWARD },
 850         { "move_backward", Keymap::MOVE_BACKWARD },
 851         { "move_left", Keymap::MOVE_LEFT },
 852         { "move_right", Keymap::MOVE_RIGHT },
 853         { "move_up", Keymap::MOVE_UP },
 854         { "move_down", Keymap::MOVE_DOWN },
 855
 856         { "primary", Keymap::PRIMARY },
 857         { "secondary", Keymap::SECONDARY },
 858         { "tertiary", Keymap::TERTIARY },
 859
 860         { "inventory_next", Keymap::INV_NEXT },
 861         { "inventory_prev", Keymap::INV_PREVIOUS },
 862         { "inventory_1", Keymap::INV_1 },
 863         { "inventory_2", Keymap::INV_2 },
 864         { "inventory_3", Keymap::INV_3 },
 865         { "inventory_4", Keymap::INV_4 },
 866         { "inventory_5", Keymap::INV_5 },
 867         { "inventory_6", Keymap::INV_6 },
 868         { "inventory_7", Keymap::INV_7 },
 869         { "inventory_8", Keymap::INV_8 },
 870         { "inventory_9", Keymap::INV_9 },
 871         { "inventory_10", Keymap::INV_10 },
 872
 873         { "toggle_audio", Keymap::TOGGLE_AUDIO },
 874         { "toggle_video", Keymap::TOGGLE_VIDEO },
 875         { "toggle_hud", Keymap::TOGGLE_HUD },
 876         { "toggle_debug", Keymap::TOGGLE_DEBUG },
 877
 878         { "exit", Keymap::EXIT },
 879 };
 880
 881 }
 882
 883 const char *Keymap::ActionToString(Action action) {
 884         for (const auto &entry : action_map) {
 885                 if (action == entry.second) {
 886                         return entry.first.c_str();
 887                 }
 888         }
 889         return "none";
 890 }
 891
 892 Keymap::Action Keymap::StringToAction(const std::string &str) {
 893         auto entry = action_map.find(str);
 894         if (entry != action_map.end()) {
 895                 return entry->second;
 896         } else {
 897                 std::cerr << "unknown action \"" << str << '"' << std::endl;
 898                 return NONE;
 899         }
 900 }
 901
 902 }