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 "../net/CongestionControl.hpp"
  21 #include "../world/BlockLookup.hpp"
  22 #include "../world/World.hpp"
  23 #include "../world/WorldManipulator.hpp"
  24
  25 #include <algorithm>
  26 #include <cmath>
  27 #include <iostream>
  28 #include <map>
  29 #include <sstream>
  30 #include <glm/gtc/matrix_transform.hpp>
  31 #include <glm/gtx/rotate_vector.hpp>
  32 #include <glm/gtx/io.hpp>
  33
  34
  35 namespace blank {
  36
  37 PlayerController::PlayerController(World &world, Player &player)
  38 : world(world)
  39 , player(player)
  40 , move_dir(0.0f)
  41 , dirty(true)
  42 , aim_world()
  43 , aim_entity() {
  44         player.GetEntity().SetController(*this);
  45 }
  46
  47 PlayerController::~PlayerController() {
  48         if (&player.GetEntity().GetController() == this) {
  49                 player.GetEntity().UnsetController();
  50         }
  51 }
  52
  53 void PlayerController::SetMovement(const glm::vec3 &m) noexcept {
  54         if (dot(m, m) > 1.0f) {
  55                 move_dir = normalize(m);
  56         } else {
  57                 move_dir = m;
  58         }
  59         Invalidate();
  60 }
  61
  62 glm::vec3 PlayerController::ControlForce(const Entity &e, const EntityState &s) const {
  63         if (!iszero(move_dir)) {
  64                 // scale input by max velocity, apply yaw, and transform to world space
  65                 return TargetVelocity(glm::vec3(glm::vec4(rotateY(move_dir * e.MaxVelocity(), s.yaw), 0.0f) * transpose(e.Transform())), s, 5.0f);
  66         } else {
  67                 // target velocity of 0 is the same as halt
  68                 return Halt(s, 5.0f);
  69         }
  70 }
  71
  72 void PlayerController::TurnHead(float dp, float dy) noexcept {
  73         player.GetEntity().TurnHead(dp, dy);
  74 }
  75
  76 float PlayerController::GetPitch() const noexcept {
  77         return player.GetEntity().Pitch();
  78 }
  79
  80 float PlayerController::GetYaw() const noexcept {
  81         return player.GetEntity().Yaw();
  82 }
  83
  84 void PlayerController::SelectInventory(int i) noexcept {
  85         player.SetInventorySlot(i);
  86 }
  87
  88 int PlayerController::InventorySlot() const noexcept {
  89         return player.GetInventorySlot();
  90 }
  91
  92 void PlayerController::Invalidate() noexcept {
  93         dirty = true;
  94 }
  95
  96 void PlayerController::UpdatePlayer() noexcept {
  97         if (dirty) {
  98                 Ray aim = player.Aim();
  99                 if (!world.Intersection(aim, glm::mat4(1.0f), player.GetEntity().ChunkCoords(), aim_world)) {
 100                         aim_world = WorldCollision();
 101                 }
 102                 if (!world.Intersection(aim, glm::mat4(1.0f), player.GetEntity(), aim_entity)) {
 103                         aim_entity = EntityCollision();
 104                 }
 105                 if (aim_world && aim_entity) {
 106                         // got both, pick the closest one
 107                         if (aim_world.depth < aim_entity.depth) {
 108                                 aim_entity = EntityCollision();
 109                         } else {
 110                                 aim_world = WorldCollision();
 111                         }
 112                 }
 113                 dirty = false;
 114         }
 115 }
 116
 117
 118 DirectInput::DirectInput(World &world, Player &player, WorldManipulator &manip)
 119 : PlayerController(world, player)
 120 , manip(manip)
 121 , place_timer(0.25f)
 122 , remove_timer(0.25f) {
 123
 124 }
 125
 126 void DirectInput::Update(Entity &, float dt) {
 127         Invalidate(); // world has changed in the meantime
 128         UpdatePlayer();
 129
 130         remove_timer.Update(dt);
 131         if (remove_timer.Hit()) {
 132                 RemoveBlock();
 133         }
 134
 135         place_timer.Update(dt);
 136         if (place_timer.Hit()) {
 137                 PlaceBlock();
 138         }
 139 }
 140
 141 void DirectInput::StartPrimaryAction() {
 142         if (!remove_timer.Running()) {
 143                 RemoveBlock();
 144                 remove_timer.Start();
 145         }
 146 }
 147
 148 void DirectInput::StopPrimaryAction() {
 149         remove_timer.Stop();
 150 }
 151
 152 void DirectInput::StartSecondaryAction() {
 153         if (!place_timer.Running()) {
 154                 PlaceBlock();
 155                 place_timer.Start();
 156         }
 157 }
 158
 159 void DirectInput::StopSecondaryAction() {
 160         place_timer.Stop();
 161 }
 162
 163 void DirectInput::StartTertiaryAction() {
 164         PickBlock();
 165 }
 166
 167 void DirectInput::StopTertiaryAction() {
 168         // nothing
 169 }
 170
 171 void DirectInput::PickBlock() {
 172         UpdatePlayer();
 173         if (!BlockFocus()) return;
 174         SelectInventory(BlockFocus().GetBlock().type - 1);
 175 }
 176
 177 void DirectInput::PlaceBlock() {
 178         UpdatePlayer();
 179         if (!BlockFocus()) return;
 180
 181         BlockLookup next_block(BlockFocus().chunk, BlockFocus().BlockPos(), Block::NormalFace(BlockFocus().normal));
 182         if (!next_block) {
 183                 return;
 184         }
 185         manip.SetBlock(next_block.GetChunk(), next_block.GetBlockIndex(), Block(InventorySlot() + 1));
 186         Invalidate();
 187 }
 188
 189 void DirectInput::RemoveBlock() {
 190         UpdatePlayer();
 191         if (!BlockFocus()) return;
 192         manip.SetBlock(BlockFocus().GetChunk(), BlockFocus().block, Block(0));
 193         Invalidate();
 194 }
 195
 196
 197 HUD::HUD(Environment &env, Config &config, const Player &player)
 198 : env(env)
 199 , config(config)
 200 , player(player)
 201 // block focus
 202 , outline()
 203 , outline_transform(1.0f)
 204 , outline_visible(false)
 205 // "inventory"
 206 , block()
 207 , block_buf()
 208 , block_transform(1.0f)
 209 , block_label()
 210 , block_visible(false)
 211 // debug overlay
 212 , counter_text()
 213 , position_text()
 214 , orientation_text()
 215 , block_text()
 216 , show_block(false)
 217 , show_entity(false)
 218 // net stats
 219 , bandwidth_text()
 220 , rtt_text()
 221 , packet_loss_text()
 222 , show_net(false)
 223 // message box
 224 , messages(env.assets.small_ui_font)
 225 , msg_timer(5000)
 226 , msg_keep(false)
 227 // crosshair
 228 , crosshair() {
 229         const float ls = env.assets.small_ui_font.LineSkip();
 230
 231         // "inventory"
 232         block_transform = glm::translate(block_transform, glm::vec3(50.0f, 50.0f, 0.0f));
 233         block_transform = glm::scale(block_transform, glm::vec3(50.0f));
 234         block_transform = glm::rotate(block_transform, 3.5f, glm::vec3(1.0f, 0.0f, 0.0f));
 235         block_transform = glm::rotate(block_transform, 0.35f, glm::vec3(0.0f, 1.0f, 0.0f));
 236         block_label.Position(
 237                 glm::vec3(50.0f, 85.0f, 0.0f),
 238                 Gravity::NORTH_WEST,
 239                 Gravity::NORTH
 240         );
 241         block_label.Foreground(glm::vec4(1.0f));
 242         block_label.Background(glm::vec4(0.5f));
 243
 244         // debug overlay
 245         counter_text.Position(glm::vec3(-25.0f, 25.0f, 0.0f), Gravity::NORTH_EAST);
 246         counter_text.Foreground(glm::vec4(1.0f));
 247         counter_text.Background(glm::vec4(0.5f));
 248         position_text.Position(glm::vec3(-25.0f, 25.0f + ls, 0.0f), Gravity::NORTH_EAST);
 249         position_text.Foreground(glm::vec4(1.0f));
 250         position_text.Background(glm::vec4(0.5f));
 251         orientation_text.Position(glm::vec3(-25.0f, 25.0f + 2 * ls, 0.0f), Gravity::NORTH_EAST);
 252         orientation_text.Foreground(glm::vec4(1.0f));
 253         orientation_text.Background(glm::vec4(0.5f));
 254         block_text.Position(glm::vec3(-25.0f, 25.0f + 4 * ls, 0.0f), Gravity::NORTH_EAST);
 255         block_text.Foreground(glm::vec4(1.0f));
 256         block_text.Background(glm::vec4(0.5f));
 257         block_text.Set(env.assets.small_ui_font, "Block: none");
 258         entity_text.Position(glm::vec3(-25.0f, 25.0f + 4 * ls, 0.0f), Gravity::NORTH_EAST);
 259         entity_text.Foreground(glm::vec4(1.0f));
 260         entity_text.Background(glm::vec4(0.5f));
 261         entity_text.Set(env.assets.small_ui_font, "Entity: none");
 262
 263         // net stats
 264         bandwidth_text.Position(glm::vec3(-25.0f, 25.0f + 6 * ls, 0.0f), Gravity::NORTH_EAST);
 265         bandwidth_text.Foreground(glm::vec4(1.0f));
 266         bandwidth_text.Background(glm::vec4(0.5f));
 267         bandwidth_text.Set(env.assets.small_ui_font, "TX: 0.0KB/s RX: 0.0KB/s");
 268         rtt_text.Position(glm::vec3(-25.0f, 25.0f + 7 * ls, 0.0f), Gravity::NORTH_EAST);
 269         rtt_text.Foreground(glm::vec4(1.0f));
 270         rtt_text.Background(glm::vec4(0.5f));
 271         rtt_text.Set(env.assets.small_ui_font, "RTT: unavailable");
 272         packet_loss_text.Position(glm::vec3(-25.0f, 25.0f + 8 * ls, 0.0f), Gravity::NORTH_EAST);
 273         packet_loss_text.Foreground(glm::vec4(1.0f));
 274         packet_loss_text.Background(glm::vec4(0.5f));
 275         packet_loss_text.Set(env.assets.small_ui_font, "Packet loss: 0.0%");
 276
 277         // message box
 278         messages.Position(glm::vec3(25.0f, -25.0f - 2 * ls, 0.0f), Gravity::SOUTH_WEST);
 279         messages.Foreground(glm::vec4(1.0f));
 280         messages.Background(glm::vec4(0.5f));
 281
 282         // crosshair
 283         PrimitiveMesh::Buffer buf;
 284         buf.vertices = std::vector<glm::vec3>({
 285                 { -10.0f,   0.0f, 0.0f }, { 10.0f,  0.0f, 0.0f },
 286                 {   0.0f, -10.0f, 0.0f }, {  0.0f, 10.0f, 0.0f },
 287         });
 288         buf.indices = std::vector<PrimitiveMesh::Index>({
 289                 0, 1, 2, 3
 290         });
 291         buf.colors.resize(4, { 10.0f, 10.0f, 10.0f, 1.0f });
 292         crosshair.Update(buf);
 293 }
 294
 295 namespace {
 296
 297 PrimitiveMesh::Buffer outl_buf;
 298
 299 }
 300
 301 void HUD::FocusBlock(const Chunk &chunk, int index) {
 302         const Block &block = chunk.BlockAt(index);
 303         const BlockType &type = chunk.Type(index);
 304         outl_buf.Clear();
 305         type.OutlinePrimitiveMesh(outl_buf);
 306         outline.Update(outl_buf);
 307         outline_transform = chunk.Transform(player.GetEntity().ChunkCoords());
 308         outline_transform *= chunk.ToTransform(Chunk::ToPos(index), index);
 309         outline_transform *= glm::scale(glm::vec3(1.005f));
 310         outline_visible = true;
 311         {
 312                 std::stringstream s;
 313                 s << "Block: "
 314                         << type.label
 315                         << ", face: " << block.GetFace()
 316                         << ", turn: " << block.GetTurn();
 317                 block_text.Set(env.assets.small_ui_font, s.str());
 318         }
 319         show_block = true;
 320         show_entity = false;
 321 }
 322
 323 void HUD::FocusEntity(const Entity &entity) {
 324         {
 325                 std::stringstream s;
 326                 s << "Entity: " << entity.Name();
 327                 entity_text.Set(env.assets.small_ui_font, s.str());
 328         }
 329         show_block = false;
 330         show_entity = true;
 331 }
 332
 333 void HUD::FocusNone() {
 334         outline_visible = false;
 335         show_block = false;
 336         show_entity = false;
 337 }
 338
 339 void HUD::DisplayNone() {
 340         block_visible = false;
 341 }
 342
 343 void HUD::Display(const BlockType &type) {
 344         block_buf.Clear();
 345         type.FillEntityMesh(block_buf);
 346         block.Update(block_buf);
 347
 348         block_label.Set(env.assets.small_ui_font, type.label);
 349
 350         block_visible = type.visible;
 351 }
 352
 353
 354 void HUD::UpdateDebug() {
 355         UpdateCounter();
 356         UpdatePosition();
 357         UpdateOrientation();
 358 }
 359
 360 void HUD::UpdateCounter() {
 361         std::stringstream s;
 362         s << std::setprecision(3) <<
 363                 "avg: " << env.counter.Average().running << "ms, "
 364                 "peak: " << env.counter.Peak().running << "ms";
 365         std::string text = s.str();
 366         counter_text.Set(env.assets.small_ui_font, text);
 367 }
 368
 369 void HUD::UpdatePosition() {
 370         std::stringstream s;
 371         s << std::setprecision(3) << "pos: " << player.GetEntity().AbsolutePosition();
 372         position_text.Set(env.assets.small_ui_font, s.str());
 373 }
 374
 375 void HUD::UpdateOrientation() {
 376         std::stringstream s;
 377         s << std::setprecision(3) << "pitch: " << rad2deg(player.GetEntity().Pitch())
 378                 << ", yaw: " << rad2deg(player.GetEntity().Yaw());
 379         orientation_text.Set(env.assets.small_ui_font, s.str());
 380 }
 381
 382 void HUD::PostMessage(const char *msg) {
 383         messages.PushLine(msg);
 384         msg_timer.Reset();
 385         msg_timer.Start();
 386         std::cout << msg << std::endl;
 387 }
 388
 389
 390 void HUD::UpdateNetStats(const CongestionControl &stat) {
 391         if (!config.video.debug) return;
 392
 393         std::stringstream s;
 394         s << std::fixed << std::setprecision(1)
 395                 << "TX: " << stat.Upstream()
 396                 << "KB/s, RX: " << stat.Downstream() << "KB/s";
 397         bandwidth_text.Set(env.assets.small_ui_font, s.str());
 398
 399         s.str("");
 400         s << "RTT: " << stat.RoundTripTime() << "ms";
 401         rtt_text.Set(env.assets.small_ui_font, s.str());
 402
 403         s.str("");
 404         s << "Packet loss: " << (stat.PacketLoss() * 100.0f) << "%";
 405         packet_loss_text.Set(env.assets.small_ui_font, s.str());
 406
 407         show_net = true;
 408 }
 409
 410
 411 void HUD::Update(int dt) {
 412         msg_timer.Update(dt);
 413         if (msg_timer.HitOnce()) {
 414                 msg_timer.Stop();
 415         }
 416
 417         if (config.video.debug) {
 418                 if (env.counter.Changed()) {
 419                         UpdateCounter();
 420                 }
 421                 UpdatePosition();
 422                 UpdateOrientation();
 423         }
 424 }
 425
 426 void HUD::Render(Viewport &viewport) noexcept {
 427         // block focus
 428         if (outline_visible && config.video.world) {
 429                 PlainColor &outline_prog = viewport.WorldColorProgram();
 430                 outline_prog.SetM(outline_transform);
 431                 outline.DrawLines();
 432         }
 433
 434         // clear depth buffer so everything renders above the world
 435         viewport.ClearDepth();
 436
 437         if (config.video.hud) {
 438                 // "inventory"
 439                 if (block_visible) {
 440                         DirectionalLighting &world_prog = viewport.HUDProgram();
 441                         world_prog.SetLightDirection({ 1.0f, 3.0f, 5.0f });
 442                         world_prog.SetLightColor({ 1.0f, 1.0f, 1.0f });
 443                         world_prog.SetAmbientColor({ 0.1f, 0.1f, 0.1f });
 444                         // disable distance fog
 445                         world_prog.SetFogDensity(0.0f);
 446
 447                         viewport.DisableBlending();
 448                         world_prog.SetM(block_transform);
 449                         block.Draw();
 450                         block_label.Render(viewport);
 451                 }
 452
 453                 // message box
 454                 if (msg_keep || msg_timer.Running()) {
 455                         messages.Render(viewport);
 456                 }
 457
 458                 // crosshair
 459                 PlainColor &outline_prog = viewport.HUDColorProgram();
 460                 viewport.EnableInvertBlending();
 461                 viewport.SetCursor(glm::vec3(0.0f), Gravity::CENTER);
 462                 outline_prog.SetM(viewport.Cursor());
 463                 crosshair.DrawLines();
 464         }
 465
 466         // debug overlay
 467         if (config.video.debug) {
 468                 counter_text.Render(viewport);
 469                 position_text.Render(viewport);
 470                 orientation_text.Render(viewport);
 471                 if (show_block) {
 472                         block_text.Render(viewport);
 473                 } else if (show_entity) {
 474                         entity_text.Render(viewport);
 475                 }
 476                 if (show_net) {
 477                         bandwidth_text.Render(viewport);
 478                         rtt_text.Render(viewport);
 479                         packet_loss_text.Render(viewport);
 480                 }
 481         }
 482 }
 483
 484
 485 InteractiveManipulator::InteractiveManipulator(Audio &audio, const SoundBank &sounds, Entity &player)
 486 : player(player)
 487 , audio(audio)
 488 , sounds(sounds) {
 489
 490 }
 491
 492 void InteractiveManipulator::SetBlock(Chunk &chunk, int index, const Block &block) {
 493         const BlockType &old_type = chunk.Type(index);
 494         chunk.SetBlock(index, block);
 495         const BlockType &new_type = chunk.Type(index);
 496         glm::vec3 coords = chunk.ToSceneCoords(player.ChunkCoords(), Chunk::ToCoords(index));
 497         if (new_type.id == 0) {
 498                 if (old_type.remove_sound >= 0) {
 499                         audio.Play(sounds[old_type.remove_sound], coords);
 500                 }
 501         } else {
 502                 if (new_type.place_sound >= 0) {
 503                         audio.Play(sounds[new_type.place_sound], coords);
 504                 }
 505         }
 506 }
 507
 508
 509 Interface::Interface(
 510         Config &config,
 511         const Keymap &keymap,
 512         PlayerController &pc,
 513         ClientController &cc)
 514 : config(config)
 515 , keymap(keymap)
 516 , player_ctrl(pc)
 517 , client_ctrl(cc)
 518 , fwd(0)
 519 , rev(0)
 520 , num_slots(10)
 521 , locked(false) {
 522
 523 }
 524
 525 void Interface::Lock() {
 526         fwd = glm::ivec3(0);
 527         rev = glm::ivec3(0);
 528         locked = true;
 529 }
 530
 531 void Interface::Unlock() {
 532         locked = false;
 533 }
 534
 535 void Interface::HandlePress(const SDL_KeyboardEvent &event) {
 536         if (!config.input.keyboard) return;
 537
 538         Keymap::Action action = keymap.Lookup(event);
 539         switch (action) {
 540                 case Keymap::MOVE_FORWARD:
 541                         rev.z = 1;
 542                         UpdateMovement();
 543                         break;
 544                 case Keymap::MOVE_BACKWARD:
 545                         fwd.z = 1;
 546                         UpdateMovement();
 547                         break;
 548                 case Keymap::MOVE_LEFT:
 549                         rev.x = 1;
 550                         UpdateMovement();
 551                         break;
 552                 case Keymap::MOVE_RIGHT:
 553                         fwd.x = 1;
 554                         UpdateMovement();
 555                         break;
 556                 case Keymap::MOVE_UP:
 557                         fwd.y = 1;
 558                         UpdateMovement();
 559                         break;
 560                 case Keymap::MOVE_DOWN:
 561                         rev.y = 1;
 562                         UpdateMovement();
 563                         break;
 564
 565                 case Keymap::PRIMARY:
 566                         player_ctrl.StartPrimaryAction();
 567                         break;
 568                 case Keymap::SECONDARY:
 569                         player_ctrl.StartSecondaryAction();
 570                         break;
 571                 case Keymap::TERTIARY:
 572                         player_ctrl.StartTertiaryAction();
 573                         break;
 574
 575                 case Keymap::INV_NEXT:
 576                         InvRel(1);
 577                         break;
 578                 case Keymap::INV_PREVIOUS:
 579                         InvRel(-1);
 580                         break;
 581                 case Keymap::INV_1:
 582                 case Keymap::INV_2:
 583                 case Keymap::INV_3:
 584                 case Keymap::INV_4:
 585                 case Keymap::INV_5:
 586                 case Keymap::INV_6:
 587                 case Keymap::INV_7:
 588                 case Keymap::INV_8:
 589                 case Keymap::INV_9:
 590                 case Keymap::INV_10:
 591                         InvAbs(action - Keymap::INV_1);
 592                         break;
 593
 594                 case Keymap::EXIT:
 595                         client_ctrl.Exit();
 596                         break;
 597
 598                 case Keymap::TOGGLE_AUDIO:
 599                         config.audio.enabled = !config.audio.enabled;
 600                         client_ctrl.SetAudio(config.audio.enabled);
 601                         break;
 602                 case Keymap::TOGGLE_VIDEO:
 603                         config.video.world = !config.video.world;
 604                         client_ctrl.SetVideo(config.video.world);
 605                         break;
 606                 case Keymap::TOGGLE_HUD:
 607                         config.video.hud = !config.video.hud;
 608                         client_ctrl.SetHUD(config.video.hud);
 609                         break;
 610                 case Keymap::TOGGLE_DEBUG:
 611                         config.video.debug = !config.video.debug;
 612                         client_ctrl.SetDebug(config.video.debug);
 613                         break;
 614
 615                 default:
 616                         break;
 617         }
 618 }
 619
 620 void Interface::HandleRelease(const SDL_KeyboardEvent &event) {
 621         if (!config.input.keyboard) return;
 622
 623         switch (keymap.Lookup(event)) {
 624                 case Keymap::MOVE_FORWARD:
 625                         rev.z = 0;
 626                         UpdateMovement();
 627                         break;
 628                 case Keymap::MOVE_BACKWARD:
 629                         fwd.z = 0;
 630                         UpdateMovement();
 631                         break;
 632                 case Keymap::MOVE_LEFT:
 633                         rev.x = 0;
 634                         UpdateMovement();
 635                         break;
 636                 case Keymap::MOVE_RIGHT:
 637                         fwd.x = 0;
 638                         UpdateMovement();
 639                         break;
 640                 case Keymap::MOVE_UP:
 641                         fwd.y = 0;
 642                         UpdateMovement();
 643                         break;
 644                 case Keymap::MOVE_DOWN:
 645                         rev.y = 0;
 646                         UpdateMovement();
 647                         break;
 648
 649                 case Keymap::PRIMARY:
 650                         player_ctrl.StopPrimaryAction();
 651                         break;
 652                 case Keymap::SECONDARY:
 653                         player_ctrl.StopSecondaryAction();
 654                         break;
 655                 case Keymap::TERTIARY:
 656                         player_ctrl.StopTertiaryAction();
 657                         break;
 658
 659                 default:
 660                         break;
 661         }
 662 }
 663
 664 void Interface::Handle(const SDL_MouseMotionEvent &event) {
 665         if (locked || !config.input.mouse) return;
 666         player_ctrl.TurnHead(
 667                 event.yrel * config.input.pitch_sensitivity,
 668                 event.xrel * config.input.yaw_sensitivity);
 669 }
 670
 671 void Interface::HandlePress(const SDL_MouseButtonEvent &event) {
 672         if (!config.input.mouse) return;
 673
 674         switch (event.button) {
 675                 case SDL_BUTTON_LEFT:
 676                         player_ctrl.StartPrimaryAction();
 677                         break;
 678                 case SDL_BUTTON_RIGHT:
 679                         player_ctrl.StartSecondaryAction();
 680                         break;
 681                 case SDL_BUTTON_MIDDLE:
 682                         player_ctrl.StartTertiaryAction();
 683                         break;
 684         }
 685 }
 686
 687 void Interface::HandleRelease(const SDL_MouseButtonEvent &event) {
 688         if (!config.input.mouse) return;
 689
 690         switch (event.button) {
 691                 case SDL_BUTTON_LEFT:
 692                         player_ctrl.StopPrimaryAction();
 693                         break;
 694                 case SDL_BUTTON_RIGHT:
 695                         player_ctrl.StopSecondaryAction();
 696                         break;
 697                 case SDL_BUTTON_MIDDLE:
 698                         player_ctrl.StopTertiaryAction();
 699                         break;
 700         }
 701 }
 702
 703
 704 void Interface::Handle(const SDL_MouseWheelEvent &event) {
 705         if (!config.input.mouse) return;
 706
 707         if (event.y < 0) {
 708                 InvRel(1);
 709         } else if (event.y > 0) {
 710                 InvRel(-1);
 711         }
 712 }
 713
 714 void Interface::UpdateMovement() {
 715         player_ctrl.SetMovement(glm::vec3(fwd - rev));
 716 }
 717
 718 void Interface::InvAbs(int s) {
 719         int slot = s % num_slots;
 720         while (slot < 0) {
 721                 slot += num_slots;
 722         }
 723         player_ctrl.SelectInventory(slot);
 724 }
 725
 726 void Interface::InvRel(int delta) {
 727         InvAbs(player_ctrl.GetPlayer().GetInventorySlot() + delta);
 728 }
 729
 730
 731 Keymap::Keymap()
 732 : codemap{ NONE } {
 733
 734 }
 735
 736 void Keymap::Map(SDL_Scancode scancode, Action action) {
 737         if (scancode > MAX_SCANCODE) {
 738                 throw std::runtime_error("refusing to map scancode: too damn high");
 739         }
 740         codemap[scancode] = action;
 741 }
 742
 743 Keymap::Action Keymap::Lookup(SDL_Scancode scancode) const {
 744         if (scancode < NUM_SCANCODES) {
 745                 return codemap[scancode];
 746         } else {
 747                 return NONE;
 748         }
 749 }
 750
 751
 752 void Keymap::LoadDefault() {
 753         Map(SDL_SCANCODE_UP, MOVE_FORWARD);
 754         Map(SDL_SCANCODE_W, MOVE_FORWARD);
 755         Map(SDL_SCANCODE_DOWN, MOVE_BACKWARD);
 756         Map(SDL_SCANCODE_S, MOVE_BACKWARD);
 757         Map(SDL_SCANCODE_LEFT, MOVE_LEFT);
 758         Map(SDL_SCANCODE_A, MOVE_LEFT);
 759         Map(SDL_SCANCODE_RIGHT, MOVE_RIGHT);
 760         Map(SDL_SCANCODE_D, MOVE_RIGHT);
 761         Map(SDL_SCANCODE_SPACE, MOVE_UP);
 762         Map(SDL_SCANCODE_RSHIFT, MOVE_UP);
 763         Map(SDL_SCANCODE_LSHIFT, MOVE_DOWN);
 764         Map(SDL_SCANCODE_LCTRL, MOVE_DOWN);
 765         Map(SDL_SCANCODE_RCTRL, MOVE_DOWN);
 766
 767         Map(SDL_SCANCODE_TAB, INV_NEXT);
 768         Map(SDL_SCANCODE_RIGHTBRACKET, INV_NEXT);
 769         Map(SDL_SCANCODE_LEFTBRACKET, INV_PREVIOUS);
 770         Map(SDL_SCANCODE_1, INV_1);
 771         Map(SDL_SCANCODE_2, INV_2);
 772         Map(SDL_SCANCODE_3, INV_3);
 773         Map(SDL_SCANCODE_4, INV_4);
 774         Map(SDL_SCANCODE_5, INV_5);
 775         Map(SDL_SCANCODE_6, INV_6);
 776         Map(SDL_SCANCODE_7, INV_7);
 777         Map(SDL_SCANCODE_8, INV_8);
 778         Map(SDL_SCANCODE_9, INV_9);
 779         Map(SDL_SCANCODE_0, INV_10);
 780
 781         Map(SDL_SCANCODE_INSERT, SECONDARY);
 782         Map(SDL_SCANCODE_RETURN, SECONDARY);
 783         Map(SDL_SCANCODE_MENU, TERTIARY);
 784         Map(SDL_SCANCODE_DELETE, PRIMARY);
 785         Map(SDL_SCANCODE_BACKSPACE, PRIMARY);
 786
 787         Map(SDL_SCANCODE_F1, TOGGLE_HUD);
 788         Map(SDL_SCANCODE_F2, TOGGLE_VIDEO);
 789         Map(SDL_SCANCODE_F3, TOGGLE_DEBUG);
 790         Map(SDL_SCANCODE_F4, TOGGLE_AUDIO);
 791
 792         Map(SDL_SCANCODE_ESCAPE, EXIT);
 793 }
 794
 795
 796 void Keymap::Load(std::istream &is) {
 797         TokenStreamReader in(is);
 798         std::string key_name;
 799         std::string action_name;
 800         SDL_Scancode key;
 801         Action action;
 802         while (in.HasMore()) {
 803                 if (in.Peek().type == Token::STRING) {
 804                         in.ReadString(key_name);
 805                         key = SDL_GetScancodeFromName(key_name.c_str());
 806                 } else {
 807                         key = SDL_Scancode(in.GetInt());
 808                 }
 809                 in.Skip(Token::EQUALS);
 810                 in.ReadIdentifier(action_name);
 811                 action = StringToAction(action_name);
 812                 if (in.HasMore() && in.Peek().type == Token::SEMICOLON) {
 813                         in.Skip(Token::SEMICOLON);
 814                 }
 815                 Map(key, action);
 816         }
 817 }
 818
 819 void Keymap::Save(std::ostream &out) {
 820         for (unsigned int i = 0; i < NUM_SCANCODES; ++i) {
 821                 if (codemap[i] == NONE) continue;
 822
 823                 const char *str = SDL_GetScancodeName(SDL_Scancode(i));
 824                 if (str && *str) {
 825                         out << '"';
 826                         while (*str) {
 827                                 if (*str == '"') {
 828                                         out << "\\\"";
 829                                 } else {
 830                                         out << *str;
 831                                 }
 832                                 ++str;
 833                         }
 834                         out << '"';
 835                 } else {
 836                         out << i;
 837                 }
 838
 839                 out << " = " << ActionToString(codemap[i]) << std::endl;;
 840         }
 841 }
 842
 843
 844 namespace {
 845
 846 std::map<std::string, Keymap::Action> action_map = {
 847         { "none", Keymap::NONE },
 848         { "move_forward", Keymap::MOVE_FORWARD },
 849         { "move_backward", Keymap::MOVE_BACKWARD },
 850         { "move_left", Keymap::MOVE_LEFT },
 851         { "move_right", Keymap::MOVE_RIGHT },
 852         { "move_up", Keymap::MOVE_UP },
 853         { "move_down", Keymap::MOVE_DOWN },
 854
 855         { "primary", Keymap::PRIMARY },
 856         { "secondary", Keymap::SECONDARY },
 857         { "tertiary", Keymap::TERTIARY },
 858
 859         { "inventory_next", Keymap::INV_NEXT },
 860         { "inventory_prev", Keymap::INV_PREVIOUS },
 861         { "inventory_1", Keymap::INV_1 },
 862         { "inventory_2", Keymap::INV_2 },
 863         { "inventory_3", Keymap::INV_3 },
 864         { "inventory_4", Keymap::INV_4 },
 865         { "inventory_5", Keymap::INV_5 },
 866         { "inventory_6", Keymap::INV_6 },
 867         { "inventory_7", Keymap::INV_7 },
 868         { "inventory_8", Keymap::INV_8 },
 869         { "inventory_9", Keymap::INV_9 },
 870         { "inventory_10", Keymap::INV_10 },
 871
 872         { "toggle_audio", Keymap::TOGGLE_AUDIO },
 873         { "toggle_video", Keymap::TOGGLE_VIDEO },
 874         { "toggle_hud", Keymap::TOGGLE_HUD },
 875         { "toggle_debug", Keymap::TOGGLE_DEBUG },
 876
 877         { "exit", Keymap::EXIT },
 878 };
 879
 880 }
 881
 882 const char *Keymap::ActionToString(Action action) {
 883         for (const auto &entry : action_map) {
 884                 if (action == entry.second) {
 885                         return entry.first.c_str();
 886                 }
 887         }
 888         return "none";
 889 }
 890
 891 Keymap::Action Keymap::StringToAction(const std::string &str) {
 892         auto entry = action_map.find(str);
 893         if (entry != action_map.end()) {
 894                 return entry->second;
 895         } else {
 896                 std::cerr << "unknown action \"" << str << '"' << std::endl;
 897                 return NONE;
 898         }
 899 }
 900
 901 }