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         player.GetEntity().GetSteering().SetAcceleration(5.0f);
  47 }
  48
  49 PlayerController::~PlayerController() {
  50         if (&player.GetEntity().GetController() == this) {
  51                 player.GetEntity().UnsetController();
  52         }
  53 }
  54
  55 void PlayerController::SetMovement(const glm::vec3 &m) noexcept {
  56         if (dot(m, m) > 1.0f) {
  57                 move_dir = normalize(m);
  58         } else {
  59                 move_dir = m;
  60         }
  61         Invalidate();
  62 }
  63
  64 void PlayerController::TurnHead(float dp, float dy) noexcept {
  65         player.GetEntity().TurnHead(dp, dy);
  66 }
  67
  68 float PlayerController::GetPitch() const noexcept {
  69         return player.GetEntity().Pitch();
  70 }
  71
  72 float PlayerController::GetYaw() const noexcept {
  73         return player.GetEntity().Yaw();
  74 }
  75
  76 void PlayerController::SelectInventory(int i) noexcept {
  77         player.SetInventorySlot(i);
  78 }
  79
  80 int PlayerController::InventorySlot() const noexcept {
  81         return player.GetInventorySlot();
  82 }
  83
  84 void PlayerController::Invalidate() noexcept {
  85         dirty = true;
  86 }
  87
  88 void PlayerController::UpdatePlayer() noexcept {
  89         if (dirty) {
  90                 Ray aim = player.Aim();
  91                 Entity &entity = player.GetEntity();
  92                 if (!world.Intersection(aim, entity.ChunkCoords(), aim_world)) {
  93                         aim_world = WorldCollision();
  94                 }
  95                 if (!world.Intersection(aim, entity, 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                                 // FIXME: somehow this can get stuck on an entity?
 102                                 aim_entity = EntityCollision();
 103                         } else {
 104                                 aim_world = WorldCollision();
 105                         }
 106                 }
 107                 Steering &steering = entity.GetSteering();
 108                 if (!iszero(move_dir)) {
 109                         // scale input by max velocity, apply yaw, and transform to world space
 110                         steering.SetTargetVelocity(glm::vec3(
 111                                 glm::vec4(rotateY(move_dir * entity.MaxVelocity(), entity.Yaw()), 0.0f)
 112                                 * transpose(entity.Transform())
 113                         ));
 114                         steering.Enable(Steering::TARGET_VELOCITY);
 115                         steering.Disable(Steering::HALT);
 116                 } else {
 117                         // target velocity of 0 is the same as halt
 118                         steering.Enable(Steering::HALT);
 119                         steering.Disable(Steering::TARGET_VELOCITY);
 120                 }
 121                 dirty = false;
 122         }
 123 }
 124
 125
 126 DirectInput::DirectInput(World &world, Player &player, WorldManipulator &manip)
 127 : PlayerController(world, player)
 128 , manip(manip)
 129 , place_timer(0.25f)
 130 , remove_timer(0.25f) {
 131
 132 }
 133
 134 void DirectInput::Update(Entity &, float dt) {
 135         Invalidate(); // world has changed in the meantime
 136         UpdatePlayer();
 137
 138         remove_timer.Update(dt);
 139         if (remove_timer.Hit()) {
 140                 RemoveBlock();
 141         }
 142
 143         place_timer.Update(dt);
 144         if (place_timer.Hit()) {
 145                 PlaceBlock();
 146         }
 147 }
 148
 149 void DirectInput::StartPrimaryAction() {
 150         if (!remove_timer.Running()) {
 151                 RemoveBlock();
 152                 remove_timer.Start();
 153         }
 154 }
 155
 156 void DirectInput::StopPrimaryAction() {
 157         remove_timer.Stop();
 158 }
 159
 160 void DirectInput::StartSecondaryAction() {
 161         if (!place_timer.Running()) {
 162                 PlaceBlock();
 163                 place_timer.Start();
 164         }
 165 }
 166
 167 void DirectInput::StopSecondaryAction() {
 168         place_timer.Stop();
 169 }
 170
 171 void DirectInput::StartTertiaryAction() {
 172         PickBlock();
 173 }
 174
 175 void DirectInput::StopTertiaryAction() {
 176         // nothing
 177 }
 178
 179 void DirectInput::PickBlock() {
 180         UpdatePlayer();
 181         if (!BlockFocus()) return;
 182         SelectInventory(BlockFocus().GetBlock().type - 1);
 183 }
 184
 185 void DirectInput::PlaceBlock() {
 186         UpdatePlayer();
 187         if (!BlockFocus()) return;
 188
 189         BlockLookup next_block(BlockFocus().chunk, BlockFocus().BlockPos(), Block::NormalFace(BlockFocus().normal));
 190         if (!next_block) {
 191                 return;
 192         }
 193         manip.SetBlock(next_block.GetChunk(), next_block.GetBlockIndex(), Block(InventorySlot() + 1));
 194         Invalidate();
 195 }
 196
 197 void DirectInput::RemoveBlock() {
 198         UpdatePlayer();
 199         if (!BlockFocus()) return;
 200         manip.SetBlock(BlockFocus().GetChunk(), BlockFocus().block, Block(0));
 201         Invalidate();
 202 }
 203
 204
 205 HUD::HUD(Environment &env, Config &config, const Player &player)
 206 : env(env)
 207 , config(config)
 208 , player(player)
 209 // block focus
 210 , outline()
 211 , outline_transform(1.0f)
 212 , outline_visible(false)
 213 // "inventory"
 214 , block()
 215 , block_buf()
 216 , block_transform(1.0f)
 217 , block_label()
 218 , block_visible(false)
 219 // debug overlay
 220 , counter_text()
 221 , position_text()
 222 , orientation_text()
 223 , block_text()
 224 , show_block(false)
 225 , show_entity(false)
 226 // net stats
 227 , bandwidth_text()
 228 , rtt_text()
 229 , packet_loss_text()
 230 , show_net(false)
 231 // message box
 232 , messages(env.assets.small_ui_font)
 233 , msg_timer(5000)
 234 , msg_keep(false)
 235 // crosshair
 236 , crosshair() {
 237         const float ls = env.assets.small_ui_font.LineSkip();
 238
 239         // "inventory"
 240         block_transform = glm::translate(block_transform, glm::vec3(50.0f, 50.0f, 0.0f));
 241         block_transform = glm::scale(block_transform, glm::vec3(50.0f));
 242         block_transform = glm::rotate(block_transform, 3.5f, glm::vec3(1.0f, 0.0f, 0.0f));
 243         block_transform = glm::rotate(block_transform, 0.35f, glm::vec3(0.0f, 1.0f, 0.0f));
 244         block_label.Position(
 245                 glm::vec3(50.0f, 85.0f, 0.0f),
 246                 Gravity::NORTH_WEST,
 247                 Gravity::NORTH
 248         );
 249         block_label.Foreground(glm::vec4(1.0f));
 250         block_label.Background(glm::vec4(0.5f));
 251
 252         // debug overlay
 253         counter_text.Position(glm::vec3(-25.0f, 25.0f, 0.0f), Gravity::NORTH_EAST);
 254         counter_text.Foreground(glm::vec4(1.0f));
 255         counter_text.Background(glm::vec4(0.5f));
 256         position_text.Position(glm::vec3(-25.0f, 25.0f + ls, 0.0f), Gravity::NORTH_EAST);
 257         position_text.Foreground(glm::vec4(1.0f));
 258         position_text.Background(glm::vec4(0.5f));
 259         orientation_text.Position(glm::vec3(-25.0f, 25.0f + 2 * ls, 0.0f), Gravity::NORTH_EAST);
 260         orientation_text.Foreground(glm::vec4(1.0f));
 261         orientation_text.Background(glm::vec4(0.5f));
 262         block_text.Position(glm::vec3(-25.0f, 25.0f + 4 * ls, 0.0f), Gravity::NORTH_EAST);
 263         block_text.Foreground(glm::vec4(1.0f));
 264         block_text.Background(glm::vec4(0.5f));
 265         block_text.Set(env.assets.small_ui_font, "Block: none");
 266         entity_text.Position(glm::vec3(-25.0f, 25.0f + 4 * ls, 0.0f), Gravity::NORTH_EAST);
 267         entity_text.Foreground(glm::vec4(1.0f));
 268         entity_text.Background(glm::vec4(0.5f));
 269         entity_text.Set(env.assets.small_ui_font, "Entity: none");
 270
 271         // net stats
 272         bandwidth_text.Position(glm::vec3(-25.0f, 25.0f + 6 * ls, 0.0f), Gravity::NORTH_EAST);
 273         bandwidth_text.Foreground(glm::vec4(1.0f));
 274         bandwidth_text.Background(glm::vec4(0.5f));
 275         bandwidth_text.Set(env.assets.small_ui_font, "TX: 0.0KB/s RX: 0.0KB/s");
 276         rtt_text.Position(glm::vec3(-25.0f, 25.0f + 7 * ls, 0.0f), Gravity::NORTH_EAST);
 277         rtt_text.Foreground(glm::vec4(1.0f));
 278         rtt_text.Background(glm::vec4(0.5f));
 279         rtt_text.Set(env.assets.small_ui_font, "RTT: unavailable");
 280         packet_loss_text.Position(glm::vec3(-25.0f, 25.0f + 8 * ls, 0.0f), Gravity::NORTH_EAST);
 281         packet_loss_text.Foreground(glm::vec4(1.0f));
 282         packet_loss_text.Background(glm::vec4(0.5f));
 283         packet_loss_text.Set(env.assets.small_ui_font, "Packet loss: 0.0%");
 284
 285         // message box
 286         messages.Position(glm::vec3(25.0f, -25.0f - 2 * ls, 0.0f), Gravity::SOUTH_WEST);
 287         messages.Foreground(glm::vec4(1.0f));
 288         messages.Background(glm::vec4(0.5f));
 289
 290         // crosshair
 291         PrimitiveMesh::Buffer buf;
 292         buf.vertices = std::vector<glm::vec3>({
 293                 { -10.0f,   0.0f, 0.0f }, { 10.0f,  0.0f, 0.0f },
 294                 {   0.0f, -10.0f, 0.0f }, {  0.0f, 10.0f, 0.0f },
 295         });
 296         buf.indices = std::vector<PrimitiveMesh::Index>({
 297                 0, 1, 2, 3
 298         });
 299         buf.colors.resize(4, { 10.0f, 10.0f, 10.0f, 1.0f });
 300         crosshair.Update(buf);
 301 }
 302
 303 namespace {
 304
 305 PrimitiveMesh::Buffer outl_buf;
 306
 307 }
 308
 309 void HUD::FocusBlock(const Chunk &chunk, int index) {
 310         const Block &block = chunk.BlockAt(index);
 311         const BlockType &type = chunk.Type(index);
 312         outl_buf.Clear();
 313         type.OutlinePrimitiveMesh(outl_buf);
 314         outline.Update(outl_buf);
 315         outline_transform = chunk.Transform(player.GetEntity().ChunkCoords());
 316         outline_transform *= chunk.ToTransform(Chunk::ToPos(index), index);
 317         outline_transform *= glm::scale(glm::vec3(1.005f));
 318         outline_visible = true;
 319         {
 320                 std::stringstream s;
 321                 s << "Block: "
 322                         << type.label
 323                         << ", face: " << block.GetFace()
 324                         << ", turn: " << block.GetTurn();
 325                 block_text.Set(env.assets.small_ui_font, s.str());
 326         }
 327         show_block = true;
 328         show_entity = false;
 329 }
 330
 331 void HUD::FocusEntity(const Entity &entity) {
 332         {
 333                 std::stringstream s;
 334                 s << "Entity: " << entity.Name();
 335                 entity_text.Set(env.assets.small_ui_font, s.str());
 336         }
 337         show_block = false;
 338         show_entity = true;
 339 }
 340
 341 void HUD::FocusNone() {
 342         outline_visible = false;
 343         show_block = false;
 344         show_entity = false;
 345 }
 346
 347 void HUD::DisplayNone() {
 348         block_visible = false;
 349 }
 350
 351 void HUD::Display(const BlockType &type) {
 352         block_buf.Clear();
 353         type.FillEntityMesh(block_buf);
 354         block.Update(block_buf);
 355
 356         block_label.Set(env.assets.small_ui_font, type.label);
 357
 358         block_visible = type.visible;
 359 }
 360
 361
 362 void HUD::UpdateDebug() {
 363         UpdateCounter();
 364         UpdatePosition();
 365         UpdateOrientation();
 366 }
 367
 368 void HUD::UpdateCounter() {
 369         std::stringstream s;
 370         s << std::setprecision(3) <<
 371                 "avg: " << env.counter.Average().running << "ms, "
 372                 "peak: " << env.counter.Peak().running << "ms";
 373         std::string text = s.str();
 374         counter_text.Set(env.assets.small_ui_font, text);
 375 }
 376
 377 void HUD::UpdatePosition() {
 378         std::stringstream s;
 379         s << std::setprecision(3) << "pos: " << player.GetEntity().AbsolutePosition();
 380         position_text.Set(env.assets.small_ui_font, s.str());
 381 }
 382
 383 void HUD::UpdateOrientation() {
 384         std::stringstream s;
 385         s << std::setprecision(3) << "pitch: " << glm::degrees(player.GetEntity().Pitch())
 386                 << ", yaw: " << glm::degrees(player.GetEntity().Yaw());
 387         orientation_text.Set(env.assets.small_ui_font, s.str());
 388 }
 389
 390 void HUD::PostMessage(const char *msg) {
 391         messages.PushLine(msg);
 392         msg_timer.Reset();
 393         msg_timer.Start();
 394         std::cout << msg << std::endl;
 395 }
 396
 397
 398 void HUD::UpdateNetStats(const CongestionControl &stat) {
 399         if (!config.video.debug) return;
 400
 401         std::stringstream s;
 402         s << std::fixed << std::setprecision(1)
 403                 << "TX: " << stat.Upstream()
 404                 << "KB/s, RX: " << stat.Downstream() << "KB/s";
 405         bandwidth_text.Set(env.assets.small_ui_font, s.str());
 406
 407         s.str("");
 408         s << "RTT: " << stat.RoundTripTime() << "ms";
 409         rtt_text.Set(env.assets.small_ui_font, s.str());
 410
 411         s.str("");
 412         s << "Packet loss: " << (stat.PacketLoss() * 100.0f) << "%";
 413         packet_loss_text.Set(env.assets.small_ui_font, s.str());
 414
 415         show_net = true;
 416 }
 417
 418
 419 void HUD::Update(int dt) {
 420         msg_timer.Update(dt);
 421         if (msg_timer.HitOnce()) {
 422                 msg_timer.Stop();
 423         }
 424
 425         if (config.video.debug) {
 426                 if (env.counter.Changed()) {
 427                         UpdateCounter();
 428                 }
 429                 UpdatePosition();
 430                 UpdateOrientation();
 431         }
 432 }
 433
 434 void HUD::Render(Viewport &viewport) noexcept {
 435         // block focus
 436         if (outline_visible && config.video.world) {
 437                 PlainColor &outline_prog = viewport.WorldColorProgram();
 438                 outline_prog.SetM(outline_transform);
 439                 outline.DrawLines();
 440         }
 441
 442         // clear depth buffer so everything renders above the world
 443         viewport.ClearDepth();
 444
 445         if (config.video.hud) {
 446                 // "inventory"
 447                 if (block_visible) {
 448                         DirectionalLighting &world_prog = viewport.HUDProgram();
 449                         world_prog.SetLightDirection({ 1.0f, 3.0f, 5.0f });
 450                         world_prog.SetLightColor({ 1.0f, 1.0f, 1.0f });
 451                         world_prog.SetAmbientColor({ 0.1f, 0.1f, 0.1f });
 452                         // disable distance fog
 453                         world_prog.SetFogDensity(0.0f);
 454
 455                         viewport.DisableBlending();
 456                         world_prog.SetM(block_transform);
 457                         block.Draw();
 458                         block_label.Render(viewport);
 459                 }
 460
 461                 // message box
 462                 if (msg_keep || msg_timer.Running()) {
 463                         messages.Render(viewport);
 464                 }
 465
 466                 // crosshair
 467                 PlainColor &outline_prog = viewport.HUDColorProgram();
 468                 viewport.EnableInvertBlending();
 469                 viewport.SetCursor(glm::vec3(0.0f), Gravity::CENTER);
 470                 outline_prog.SetM(viewport.Cursor());
 471                 crosshair.DrawLines();
 472         }
 473
 474         // debug overlay
 475         if (config.video.debug) {
 476                 counter_text.Render(viewport);
 477                 position_text.Render(viewport);
 478                 orientation_text.Render(viewport);
 479                 if (show_block) {
 480                         block_text.Render(viewport);
 481                 } else if (show_entity) {
 482                         entity_text.Render(viewport);
 483                 }
 484                 if (show_net) {
 485                         bandwidth_text.Render(viewport);
 486                         rtt_text.Render(viewport);
 487                         packet_loss_text.Render(viewport);
 488                 }
 489         }
 490 }
 491
 492
 493 InteractiveManipulator::InteractiveManipulator(Audio &audio, const SoundBank &sounds, Entity &player)
 494 : player(player)
 495 , audio(audio)
 496 , sounds(sounds) {
 497
 498 }
 499
 500 void InteractiveManipulator::SetBlock(Chunk &chunk, int index, const Block &block) {
 501         const BlockType &old_type = chunk.Type(index);
 502         chunk.SetBlock(index, block);
 503         const BlockType &new_type = chunk.Type(index);
 504         glm::vec3 coords = chunk.ToSceneCoords(player.ChunkCoords(), Chunk::ToCoords(index));
 505         if (new_type.id == 0) {
 506                 if (old_type.remove_sound >= 0) {
 507                         audio.Play(sounds[old_type.remove_sound], coords);
 508                 }
 509         } else {
 510                 if (new_type.place_sound >= 0) {
 511                         audio.Play(sounds[new_type.place_sound], coords);
 512                 }
 513         }
 514 }
 515
 516
 517 Interface::Interface(
 518         Config &config,
 519         const Keymap &keymap,
 520         PlayerController &pc,
 521         ClientController &cc)
 522 : config(config)
 523 , keymap(keymap)
 524 , player_ctrl(pc)
 525 , client_ctrl(cc)
 526 , fwd(0)
 527 , rev(0)
 528 , num_slots(10)
 529 , locked(false) {
 530
 531 }
 532
 533 void Interface::Lock() {
 534         fwd = glm::ivec3(0);
 535         rev = glm::ivec3(0);
 536         locked = true;
 537 }
 538
 539 void Interface::Unlock() {
 540         locked = false;
 541 }
 542
 543 void Interface::HandlePress(const SDL_KeyboardEvent &event) {
 544         if (!config.input.keyboard) return;
 545
 546         Keymap::Action action = keymap.Lookup(event);
 547         switch (action) {
 548                 case Keymap::MOVE_FORWARD:
 549                         rev.z = 1;
 550                         UpdateMovement();
 551                         break;
 552                 case Keymap::MOVE_BACKWARD:
 553                         fwd.z = 1;
 554                         UpdateMovement();
 555                         break;
 556                 case Keymap::MOVE_LEFT:
 557                         rev.x = 1;
 558                         UpdateMovement();
 559                         break;
 560                 case Keymap::MOVE_RIGHT:
 561                         fwd.x = 1;
 562                         UpdateMovement();
 563                         break;
 564                 case Keymap::MOVE_UP:
 565                         fwd.y = 1;
 566                         UpdateMovement();
 567                         break;
 568                 case Keymap::MOVE_DOWN:
 569                         rev.y = 1;
 570                         UpdateMovement();
 571                         break;
 572
 573                 case Keymap::PRIMARY:
 574                         player_ctrl.StartPrimaryAction();
 575                         break;
 576                 case Keymap::SECONDARY:
 577                         player_ctrl.StartSecondaryAction();
 578                         break;
 579                 case Keymap::TERTIARY:
 580                         player_ctrl.StartTertiaryAction();
 581                         break;
 582
 583                 case Keymap::INV_NEXT:
 584                         InvRel(1);
 585                         break;
 586                 case Keymap::INV_PREVIOUS:
 587                         InvRel(-1);
 588                         break;
 589                 case Keymap::INV_1:
 590                 case Keymap::INV_2:
 591                 case Keymap::INV_3:
 592                 case Keymap::INV_4:
 593                 case Keymap::INV_5:
 594                 case Keymap::INV_6:
 595                 case Keymap::INV_7:
 596                 case Keymap::INV_8:
 597                 case Keymap::INV_9:
 598                 case Keymap::INV_10:
 599                         InvAbs(action - Keymap::INV_1);
 600                         break;
 601
 602                 case Keymap::EXIT:
 603                         client_ctrl.Exit();
 604                         break;
 605
 606                 case Keymap::TOGGLE_AUDIO:
 607                         client_ctrl.SetAudio(!config.audio.enabled);
 608                         break;
 609                 case Keymap::TOGGLE_VIDEO:
 610                         client_ctrl.SetVideo(!config.video.world);
 611                         break;
 612                 case Keymap::TOGGLE_HUD:
 613                         client_ctrl.SetHUD(!config.video.hud);
 614                         break;
 615                 case Keymap::TOGGLE_DEBUG:
 616                         client_ctrl.SetDebug(!config.video.debug);
 617                         break;
 618                 case Keymap::CAMERA_NEXT:
 619                         client_ctrl.NextCamera();
 620                         break;
 621
 622                 default:
 623                         break;
 624         }
 625 }
 626
 627 void Interface::HandleRelease(const SDL_KeyboardEvent &event) {
 628         if (!config.input.keyboard) return;
 629
 630         switch (keymap.Lookup(event)) {
 631                 case Keymap::MOVE_FORWARD:
 632                         rev.z = 0;
 633                         UpdateMovement();
 634                         break;
 635                 case Keymap::MOVE_BACKWARD:
 636                         fwd.z = 0;
 637                         UpdateMovement();
 638                         break;
 639                 case Keymap::MOVE_LEFT:
 640                         rev.x = 0;
 641                         UpdateMovement();
 642                         break;
 643                 case Keymap::MOVE_RIGHT:
 644                         fwd.x = 0;
 645                         UpdateMovement();
 646                         break;
 647                 case Keymap::MOVE_UP:
 648                         fwd.y = 0;
 649                         UpdateMovement();
 650                         break;
 651                 case Keymap::MOVE_DOWN:
 652                         rev.y = 0;
 653                         UpdateMovement();
 654                         break;
 655
 656                 case Keymap::PRIMARY:
 657                         player_ctrl.StopPrimaryAction();
 658                         break;
 659                 case Keymap::SECONDARY:
 660                         player_ctrl.StopSecondaryAction();
 661                         break;
 662                 case Keymap::TERTIARY:
 663                         player_ctrl.StopTertiaryAction();
 664                         break;
 665
 666                 default:
 667                         break;
 668         }
 669 }
 670
 671 void Interface::Handle(const SDL_MouseMotionEvent &event) {
 672         if (locked || !config.input.mouse) return;
 673         player_ctrl.TurnHead(
 674                 event.yrel * config.input.pitch_sensitivity,
 675                 event.xrel * config.input.yaw_sensitivity);
 676 }
 677
 678 void Interface::HandlePress(const SDL_MouseButtonEvent &event) {
 679         if (!config.input.mouse) return;
 680
 681         switch (event.button) {
 682                 case SDL_BUTTON_LEFT:
 683                         player_ctrl.StartPrimaryAction();
 684                         break;
 685                 case SDL_BUTTON_RIGHT:
 686                         player_ctrl.StartSecondaryAction();
 687                         break;
 688                 case SDL_BUTTON_MIDDLE:
 689                         player_ctrl.StartTertiaryAction();
 690                         break;
 691         }
 692 }
 693
 694 void Interface::HandleRelease(const SDL_MouseButtonEvent &event) {
 695         if (!config.input.mouse) return;
 696
 697         switch (event.button) {
 698                 case SDL_BUTTON_LEFT:
 699                         player_ctrl.StopPrimaryAction();
 700                         break;
 701                 case SDL_BUTTON_RIGHT:
 702                         player_ctrl.StopSecondaryAction();
 703                         break;
 704                 case SDL_BUTTON_MIDDLE:
 705                         player_ctrl.StopTertiaryAction();
 706                         break;
 707         }
 708 }
 709
 710
 711 void Interface::Handle(const SDL_MouseWheelEvent &event) {
 712         if (!config.input.mouse) return;
 713
 714         if (event.y < 0) {
 715                 InvRel(1);
 716         } else if (event.y > 0) {
 717                 InvRel(-1);
 718         }
 719 }
 720
 721 void Interface::UpdateMovement() {
 722         player_ctrl.SetMovement(glm::vec3(fwd - rev));
 723 }
 724
 725 void Interface::InvAbs(int s) {
 726         int slot = s % num_slots;
 727         while (slot < 0) {
 728                 slot += num_slots;
 729         }
 730         player_ctrl.SelectInventory(slot);
 731 }
 732
 733 void Interface::InvRel(int delta) {
 734         InvAbs(player_ctrl.GetPlayer().GetInventorySlot() + delta);
 735 }
 736
 737
 738 Keymap::Keymap()
 739 : codemap{ NONE } {
 740
 741 }
 742
 743 void Keymap::Map(SDL_Scancode scancode, Action action) {
 744         if (scancode > MAX_SCANCODE) {
 745                 throw std::runtime_error("refusing to map scancode: too damn high");
 746         }
 747         codemap[scancode] = action;
 748 }
 749
 750 Keymap::Action Keymap::Lookup(SDL_Scancode scancode) const {
 751         if (scancode < NUM_SCANCODES) {
 752                 return codemap[scancode];
 753         } else {
 754                 return NONE;
 755         }
 756 }
 757
 758
 759 void Keymap::LoadDefault() {
 760         Map(SDL_SCANCODE_UP, MOVE_FORWARD);
 761         Map(SDL_SCANCODE_W, MOVE_FORWARD);
 762         Map(SDL_SCANCODE_DOWN, MOVE_BACKWARD);
 763         Map(SDL_SCANCODE_S, MOVE_BACKWARD);
 764         Map(SDL_SCANCODE_LEFT, MOVE_LEFT);
 765         Map(SDL_SCANCODE_A, MOVE_LEFT);
 766         Map(SDL_SCANCODE_RIGHT, MOVE_RIGHT);
 767         Map(SDL_SCANCODE_D, MOVE_RIGHT);
 768         Map(SDL_SCANCODE_SPACE, MOVE_UP);
 769         Map(SDL_SCANCODE_RSHIFT, MOVE_UP);
 770         Map(SDL_SCANCODE_LSHIFT, MOVE_DOWN);
 771         Map(SDL_SCANCODE_LCTRL, MOVE_DOWN);
 772         Map(SDL_SCANCODE_RCTRL, MOVE_DOWN);
 773
 774         Map(SDL_SCANCODE_TAB, INV_NEXT);
 775         Map(SDL_SCANCODE_RIGHTBRACKET, INV_NEXT);
 776         Map(SDL_SCANCODE_LEFTBRACKET, INV_PREVIOUS);
 777         Map(SDL_SCANCODE_1, INV_1);
 778         Map(SDL_SCANCODE_2, INV_2);
 779         Map(SDL_SCANCODE_3, INV_3);
 780         Map(SDL_SCANCODE_4, INV_4);
 781         Map(SDL_SCANCODE_5, INV_5);
 782         Map(SDL_SCANCODE_6, INV_6);
 783         Map(SDL_SCANCODE_7, INV_7);
 784         Map(SDL_SCANCODE_8, INV_8);
 785         Map(SDL_SCANCODE_9, INV_9);
 786         Map(SDL_SCANCODE_0, INV_10);
 787
 788         Map(SDL_SCANCODE_INSERT, SECONDARY);
 789         Map(SDL_SCANCODE_MENU, TERTIARY);
 790         Map(SDL_SCANCODE_DELETE, PRIMARY);
 791         Map(SDL_SCANCODE_BACKSPACE, PRIMARY);
 792
 793         Map(SDL_SCANCODE_F1, TOGGLE_HUD);
 794         Map(SDL_SCANCODE_F2, TOGGLE_VIDEO);
 795         Map(SDL_SCANCODE_F3, TOGGLE_DEBUG);
 796         Map(SDL_SCANCODE_F4, TOGGLE_AUDIO);
 797         Map(SDL_SCANCODE_F5, CAMERA_NEXT);
 798
 799         Map(SDL_SCANCODE_ESCAPE, EXIT);
 800 }
 801
 802
 803 void Keymap::Load(std::istream &is) {
 804         TokenStreamReader in(is);
 805         std::string key_name;
 806         std::string action_name;
 807         SDL_Scancode key;
 808         Action action;
 809         while (in.HasMore()) {
 810                 if (in.Peek().type == Token::STRING) {
 811                         in.ReadString(key_name);
 812                         key = SDL_GetScancodeFromName(key_name.c_str());
 813                 } else {
 814                         key = SDL_Scancode(in.GetInt());
 815                 }
 816                 in.Skip(Token::EQUALS);
 817                 in.ReadIdentifier(action_name);
 818                 action = StringToAction(action_name);
 819                 if (in.HasMore() && in.Peek().type == Token::SEMICOLON) {
 820                         in.Skip(Token::SEMICOLON);
 821                 }
 822                 Map(key, action);
 823         }
 824 }
 825
 826 void Keymap::Save(std::ostream &out) {
 827         for (unsigned int i = 0; i < NUM_SCANCODES; ++i) {
 828                 if (codemap[i] == NONE) continue;
 829
 830                 const char *str = SDL_GetScancodeName(SDL_Scancode(i));
 831                 if (str && *str) {
 832                         out << '"';
 833                         while (*str) {
 834                                 if (*str == '"') {
 835                                         out << "\\\"";
 836                                 } else {
 837                                         out << *str;
 838                                 }
 839                                 ++str;
 840                         }
 841                         out << '"';
 842                 } else {
 843                         out << i;
 844                 }
 845
 846                 out << " = " << ActionToString(codemap[i]) << std::endl;;
 847         }
 848 }
 849
 850
 851 namespace {
 852
 853 std::map<std::string, Keymap::Action> action_map = {
 854         { "none", Keymap::NONE },
 855         { "move_forward", Keymap::MOVE_FORWARD },
 856         { "move_backward", Keymap::MOVE_BACKWARD },
 857         { "move_left", Keymap::MOVE_LEFT },
 858         { "move_right", Keymap::MOVE_RIGHT },
 859         { "move_up", Keymap::MOVE_UP },
 860         { "move_down", Keymap::MOVE_DOWN },
 861
 862         { "primary", Keymap::PRIMARY },
 863         { "secondary", Keymap::SECONDARY },
 864         { "tertiary", Keymap::TERTIARY },
 865
 866         { "inventory_next", Keymap::INV_NEXT },
 867         { "inventory_prev", Keymap::INV_PREVIOUS },
 868         { "inventory_1", Keymap::INV_1 },
 869         { "inventory_2", Keymap::INV_2 },
 870         { "inventory_3", Keymap::INV_3 },
 871         { "inventory_4", Keymap::INV_4 },
 872         { "inventory_5", Keymap::INV_5 },
 873         { "inventory_6", Keymap::INV_6 },
 874         { "inventory_7", Keymap::INV_7 },
 875         { "inventory_8", Keymap::INV_8 },
 876         { "inventory_9", Keymap::INV_9 },
 877         { "inventory_10", Keymap::INV_10 },
 878
 879         { "toggle_audio", Keymap::TOGGLE_AUDIO },
 880         { "toggle_video", Keymap::TOGGLE_VIDEO },
 881         { "toggle_hud", Keymap::TOGGLE_HUD },
 882         { "toggle_debug", Keymap::TOGGLE_DEBUG },
 883         { "camera_next", Keymap::CAMERA_NEXT },
 884
 885         { "exit", Keymap::EXIT },
 886 };
 887
 888 }
 889
 890 const char *Keymap::ActionToString(Action action) {
 891         for (const auto &entry : action_map) {
 892                 if (action == entry.second) {
 893                         return entry.first.c_str();
 894                 }
 895         }
 896         return "none";
 897 }
 898
 899 Keymap::Action Keymap::StringToAction(const std::string &str) {
 900         auto entry = action_map.find(str);
 901         if (entry != action_map.end()) {
 902                 return entry->second;
 903         } else {
 904                 std::cerr << "unknown action \"" << str << '"' << std::endl;
 905                 return NONE;
 906         }
 907 }
 908
 909 }