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 "../audio/Audio.hpp"
  14 #include "../audio/SoundBank.hpp"
  15 #include "../geometry/distance.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/projection.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 (glm::dot(m, m) > 1.0f) {
  57                 move_dir = glm::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                                 aim_entity = EntityCollision();
 102                         } else {
 103                                 aim_world = WorldCollision();
 104                         }
 105                 }
 106                 Steering &steering = entity.GetSteering();
 107                 if (!iszero(move_dir)) {
 108                         // scale input by max velocity, apply yaw, and transform to world space
 109                         steering.SetTargetVelocity(glm::vec3(
 110                                 glm::vec4(glm::rotateY(move_dir * entity.MaxVelocity(), entity.Yaw()), 0.0f)
 111                                 * glm::transpose(entity.Transform())
 112                         ));
 113                         steering.Enable(Steering::TARGET_VELOCITY);
 114                         steering.Disable(Steering::HALT);
 115                 } else {
 116                         // target velocity of 0 is the same as halt
 117                         steering.Enable(Steering::HALT);
 118                         steering.Disable(Steering::TARGET_VELOCITY);
 119                 }
 120                 dirty = false;
 121         }
 122 }
 123
 124
 125 DirectInput::DirectInput(World &world, Player &player, WorldManipulator &manip)
 126 : PlayerController(world, player)
 127 , manip(manip)
 128 , place_timer(0.25f)
 129 , remove_timer(0.25f) {
 130
 131 }
 132
 133 void DirectInput::Update(Entity &, float dt) {
 134         Invalidate(); // world has changed in the meantime
 135         UpdatePlayer();
 136
 137         remove_timer.Update(dt);
 138         if (remove_timer.Hit()) {
 139                 RemoveBlock();
 140         }
 141
 142         place_timer.Update(dt);
 143         if (place_timer.Hit()) {
 144                 PlaceBlock();
 145         }
 146 }
 147
 148 void DirectInput::StartPrimaryAction() {
 149         if (!remove_timer.Running()) {
 150                 RemoveBlock();
 151                 remove_timer.Start();
 152         }
 153 }
 154
 155 void DirectInput::StopPrimaryAction() {
 156         remove_timer.Stop();
 157 }
 158
 159 void DirectInput::StartSecondaryAction() {
 160         if (!place_timer.Running()) {
 161                 PlaceBlock();
 162                 place_timer.Start();
 163         }
 164 }
 165
 166 void DirectInput::StopSecondaryAction() {
 167         place_timer.Stop();
 168 }
 169
 170 void DirectInput::StartTertiaryAction() {
 171         PickBlock();
 172 }
 173
 174 void DirectInput::StopTertiaryAction() {
 175         // nothing
 176 }
 177
 178 void DirectInput::PickBlock() {
 179         UpdatePlayer();
 180         if (!BlockFocus()) return;
 181         SelectInventory(BlockFocus().GetBlock().type - 1);
 182 }
 183
 184 void DirectInput::PlaceBlock() {
 185         // update block focus
 186         UpdatePlayer();
 187         // do nothing if not looking at any block
 188         if (!BlockFocus()) return;
 189
 190         // determine block adjacent to the face the player is looking at
 191         BlockLookup next_block(BlockFocus().chunk, BlockFocus().BlockPos(), Block::NormalFace(BlockFocus().normal));
 192         // abort if it's unavailable
 193         if (!next_block) {
 194                 return;
 195         }
 196
 197         // "can replace" check
 198         // this prevents players from replacing solid blocks e.g. by looking through slabs
 199         // simple for now, should be expanded to include things like
 200         // entities in the way or replacable blocks like water and stuff
 201         if (next_block.GetBlock().type != 0) {
 202                 return;
 203         }
 204
 205         Block new_block(InventorySlot() + 1);
 206
 207         // block's up vector
 208         // align with player's up
 209         const glm::vec3 player_up(GetPlayer().GetEntity().Up());
 210         new_block.SetFace(Block::NormalFace(player_up));
 211         // to align with player's local up/down look (like stairs in minecraft), just invert
 212         // it if pitch is positive
 213         // or, align with focus normal (like logs in minecraft)
 214
 215         // determine block's turn (local rotation about up axis)
 216         // when aligned with player's up (first mode, and currently the only one implemented)
 217         // project the player's view forward onto his entity's XZ plane and
 218         // use the closest cardinal direction it's pointing in
 219         const glm::vec3 view_forward(-GetPlayer().GetEntity().ViewTransform(GetPlayer().GetEntity().ChunkCoords())[2]);
 220         // if view is straight up or down, this will be a null vector (NaN after normalization)
 221         // in that case maybe the model forward should be used?
 222         // the current implementation implicitly falls back to TURN_NONE which is -Z
 223         const glm::vec3 local_forward(glm::normalize(view_forward - glm::proj(view_forward, player_up)));
 224         // FIXME: I suspect this only works when player_up is positive Y
 225         if (local_forward.x > 0.707f) {
 226                 new_block.SetTurn(Block::TURN_RIGHT);
 227         } else if (local_forward.z > 0.707f) {
 228                 new_block.SetTurn(Block::TURN_AROUND);
 229         } else if (local_forward.x < -0.707f) {
 230                 new_block.SetTurn(Block::TURN_LEFT);
 231         }
 232         // for mode two ("minecraft stairs") it should work the same, but I haven't properly
 233         // thought that through (well, that's also true about the whole face/turn thing, but oh well)
 234         // mode three I have absoloutely no clue. that placement would be appropriate for pipe-like
 235         // blocks, where turn shouldn't make a difference, but what if it does?
 236
 237         manip.SetBlock(next_block.GetChunk(), next_block.GetBlockIndex(), new_block);
 238         Invalidate();
 239 }
 240
 241 void DirectInput::RemoveBlock() {
 242         UpdatePlayer();
 243         if (!BlockFocus()) return;
 244         manip.SetBlock(BlockFocus().GetChunk(), BlockFocus().block, Block(0));
 245         Invalidate();
 246 }
 247
 248
 249 HUD::HUD(Environment &env, Config &config, const Player &player)
 250 : env(env)
 251 , config(config)
 252 , player(player)
 253 // block focus
 254 , outline()
 255 , outline_transform(1.0f)
 256 , outline_visible(false)
 257 // "inventory"
 258 , block()
 259 , block_buf()
 260 , block_transform(1.0f)
 261 , block_label()
 262 , block_visible(false)
 263 // debug overlay
 264 , counter_text()
 265 , position_text()
 266 , orientation_text()
 267 , block_text()
 268 , show_block(false)
 269 , show_entity(false)
 270 // net stats
 271 , bandwidth_text()
 272 , rtt_text()
 273 , packet_loss_text()
 274 , show_net(false)
 275 // message box
 276 , messages(env.assets.small_ui_font)
 277 , msg_timer(5000)
 278 , msg_keep(false)
 279 // crosshair
 280 , crosshair() {
 281         const float ls = env.assets.small_ui_font.LineSkip();
 282
 283         // "inventory"
 284         block_transform = glm::translate(block_transform, glm::vec3(50.0f, 50.0f, 0.0f));
 285         block_transform = glm::scale(block_transform, glm::vec3(50.0f));
 286         block_transform = glm::rotate(block_transform, 3.5f, glm::vec3(1.0f, 0.0f, 0.0f));
 287         block_transform = glm::rotate(block_transform, 0.35f, glm::vec3(0.0f, 1.0f, 0.0f));
 288         block_label.Position(
 289                 glm::vec3(50.0f, 85.0f, 0.0f),
 290                 Gravity::NORTH_WEST,
 291                 Gravity::NORTH
 292         );
 293         block_label.Foreground(glm::vec4(1.0f));
 294         block_label.Background(glm::vec4(0.5f));
 295
 296         // debug overlay
 297         counter_text.Position(glm::vec3(-25.0f, 25.0f, 0.0f), Gravity::NORTH_EAST);
 298         counter_text.Foreground(glm::vec4(1.0f));
 299         counter_text.Background(glm::vec4(0.5f));
 300         position_text.Position(glm::vec3(-25.0f, 25.0f + ls, 0.0f), Gravity::NORTH_EAST);
 301         position_text.Foreground(glm::vec4(1.0f));
 302         position_text.Background(glm::vec4(0.5f));
 303         orientation_text.Position(glm::vec3(-25.0f, 25.0f + 2 * ls, 0.0f), Gravity::NORTH_EAST);
 304         orientation_text.Foreground(glm::vec4(1.0f));
 305         orientation_text.Background(glm::vec4(0.5f));
 306         block_text.Position(glm::vec3(-25.0f, 25.0f + 4 * ls, 0.0f), Gravity::NORTH_EAST);
 307         block_text.Foreground(glm::vec4(1.0f));
 308         block_text.Background(glm::vec4(0.5f));
 309         block_text.Set(env.assets.small_ui_font, "Block: none");
 310         entity_text.Position(glm::vec3(-25.0f, 25.0f + 4 * ls, 0.0f), Gravity::NORTH_EAST);
 311         entity_text.Foreground(glm::vec4(1.0f));
 312         entity_text.Background(glm::vec4(0.5f));
 313         entity_text.Set(env.assets.small_ui_font, "Entity: none");
 314
 315         // net stats
 316         bandwidth_text.Position(glm::vec3(-25.0f, 25.0f + 6 * ls, 0.0f), Gravity::NORTH_EAST);
 317         bandwidth_text.Foreground(glm::vec4(1.0f));
 318         bandwidth_text.Background(glm::vec4(0.5f));
 319         bandwidth_text.Set(env.assets.small_ui_font, "TX: 0.0KB/s RX: 0.0KB/s");
 320         rtt_text.Position(glm::vec3(-25.0f, 25.0f + 7 * ls, 0.0f), Gravity::NORTH_EAST);
 321         rtt_text.Foreground(glm::vec4(1.0f));
 322         rtt_text.Background(glm::vec4(0.5f));
 323         rtt_text.Set(env.assets.small_ui_font, "RTT: unavailable");
 324         packet_loss_text.Position(glm::vec3(-25.0f, 25.0f + 8 * ls, 0.0f), Gravity::NORTH_EAST);
 325         packet_loss_text.Foreground(glm::vec4(1.0f));
 326         packet_loss_text.Background(glm::vec4(0.5f));
 327         packet_loss_text.Set(env.assets.small_ui_font, "Packet loss: 0.0%");
 328
 329         // message box
 330         messages.Position(glm::vec3(25.0f, -25.0f - 2 * ls, 0.0f), Gravity::SOUTH_WEST);
 331         messages.Foreground(glm::vec4(1.0f));
 332         messages.Background(glm::vec4(0.5f));
 333
 334         // crosshair
 335         PrimitiveMesh::Buffer buf;
 336         buf.vertices = std::vector<glm::vec3>({
 337                 { -10.0f,   0.0f, 0.0f }, { 10.0f,  0.0f, 0.0f },
 338                 {   0.0f, -10.0f, 0.0f }, {  0.0f, 10.0f, 0.0f },
 339         });
 340         buf.indices = std::vector<PrimitiveMesh::Index>({
 341                 0, 1, 2, 3
 342         });
 343         buf.colors.resize(4, { 255, 255, 255, 255 });
 344         crosshair.Update(buf);
 345 }
 346
 347 namespace {
 348
 349 PrimitiveMesh::Buffer outl_buf;
 350
 351 }
 352
 353 void HUD::FocusBlock(const Chunk &chunk, int index) {
 354         const Block &block = chunk.BlockAt(index);
 355         const BlockType &type = chunk.Type(index);
 356         outl_buf.Clear();
 357         type.OutlinePrimitiveMesh(outl_buf);
 358         outline.Update(outl_buf);
 359         outline_transform = chunk.Transform(player.GetEntity().ChunkCoords());
 360         outline_transform *= chunk.ToTransform(Chunk::ToPos(index), index);
 361         outline_transform *= glm::scale(glm::vec3(1.005f));
 362         outline_visible = true;
 363         {
 364                 std::stringstream s;
 365                 s << "Block: "
 366                         << type.label
 367                         << ", face: " << block.GetFace()
 368                         << ", turn: " << block.GetTurn();
 369                 block_text.Set(env.assets.small_ui_font, s.str());
 370         }
 371         show_block = true;
 372         show_entity = false;
 373 }
 374
 375 void HUD::FocusEntity(const Entity &entity) {
 376         {
 377                 std::stringstream s;
 378                 s << "Entity: " << entity.Name();
 379                 entity_text.Set(env.assets.small_ui_font, s.str());
 380         }
 381         show_block = false;
 382         show_entity = true;
 383 }
 384
 385 void HUD::FocusNone() {
 386         outline_visible = false;
 387         show_block = false;
 388         show_entity = false;
 389 }
 390
 391 void HUD::DisplayNone() {
 392         block_visible = false;
 393 }
 394
 395 void HUD::Display(const BlockType &type) {
 396         block_buf.Clear();
 397         type.FillEntityMesh(block_buf);
 398         block.Update(block_buf);
 399
 400         block_label.Set(env.assets.small_ui_font, type.label);
 401
 402         block_visible = type.visible;
 403 }
 404
 405
 406 void HUD::UpdateDebug() {
 407         UpdateCounter();
 408         UpdatePosition();
 409         UpdateOrientation();
 410 }
 411
 412 void HUD::UpdateCounter() {
 413         std::stringstream s;
 414         s << std::setprecision(3) <<
 415                 "avg: " << env.counter.Average().running << "ms, "
 416                 "peak: " << env.counter.Peak().running << "ms";
 417         std::string text = s.str();
 418         counter_text.Set(env.assets.small_ui_font, text);
 419 }
 420
 421 void HUD::UpdatePosition() {
 422         std::stringstream s;
 423         s << std::setprecision(3) << "pos: " << player.GetEntity().AbsolutePosition();
 424         position_text.Set(env.assets.small_ui_font, s.str());
 425 }
 426
 427 void HUD::UpdateOrientation() {
 428         std::stringstream s;
 429         s << std::setprecision(3) << "pitch: " << glm::degrees(player.GetEntity().Pitch())
 430                 << ", yaw: " << glm::degrees(player.GetEntity().Yaw());
 431         orientation_text.Set(env.assets.small_ui_font, s.str());
 432 }
 433
 434 void HUD::PostMessage(const char *msg) {
 435         messages.PushLine(msg);
 436         msg_timer.Reset();
 437         msg_timer.Start();
 438         std::cout << msg << std::endl;
 439 }
 440
 441
 442 void HUD::UpdateNetStats(const CongestionControl &stat) {
 443         if (!config.video.debug) return;
 444
 445         std::stringstream s;
 446         s << std::fixed << std::setprecision(1)
 447                 << "TX: " << stat.Upstream()
 448                 << "KB/s, RX: " << stat.Downstream() << "KB/s";
 449         bandwidth_text.Set(env.assets.small_ui_font, s.str());
 450
 451         s.str("");
 452         s << "RTT: " << stat.RoundTripTime() << "ms";
 453         rtt_text.Set(env.assets.small_ui_font, s.str());
 454
 455         s.str("");
 456         s << "Packet loss: " << (stat.PacketLoss() * 100.0f) << "%";
 457         packet_loss_text.Set(env.assets.small_ui_font, s.str());
 458
 459         show_net = true;
 460 }
 461
 462
 463 void HUD::Update(int dt) {
 464         msg_timer.Update(dt);
 465         if (msg_timer.HitOnce()) {
 466                 msg_timer.Stop();
 467         }
 468
 469         if (config.video.debug) {
 470                 if (env.counter.Changed()) {
 471                         UpdateCounter();
 472                 }
 473                 UpdatePosition();
 474                 UpdateOrientation();
 475         }
 476 }
 477
 478 void HUD::Render(Viewport &viewport) noexcept {
 479         // block focus
 480         if (outline_visible && config.video.world) {
 481                 PlainColor &outline_prog = viewport.WorldColorProgram();
 482                 outline_prog.SetM(outline_transform);
 483                 outline.DrawLines();
 484         }
 485
 486         // clear depth buffer so everything renders above the world
 487         viewport.ClearDepth();
 488
 489         if (config.video.hud) {
 490                 // "inventory"
 491                 if (block_visible) {
 492                         DirectionalLighting &world_prog = viewport.HUDProgram();
 493                         world_prog.SetLightDirection({ 1.0f, 3.0f, 5.0f });
 494                         world_prog.SetLightColor({ 1.0f, 1.0f, 1.0f });
 495                         world_prog.SetAmbientColor({ 0.1f, 0.1f, 0.1f });
 496                         // disable distance fog
 497                         world_prog.SetFogDensity(0.0f);
 498
 499                         viewport.DisableBlending();
 500                         world_prog.SetM(block_transform);
 501                         block.Draw();
 502                         block_label.Render(viewport);
 503                 }
 504
 505                 // message box
 506                 if (msg_keep || msg_timer.Running()) {
 507                         messages.Render(viewport);
 508                 }
 509
 510                 // crosshair
 511                 PlainColor &outline_prog = viewport.HUDColorProgram();
 512                 viewport.EnableInvertBlending();
 513                 viewport.SetCursor(glm::vec3(0.0f), Gravity::CENTER);
 514                 outline_prog.SetM(viewport.Cursor());
 515                 crosshair.DrawLines();
 516         }
 517
 518         // debug overlay
 519         if (config.video.debug) {
 520                 counter_text.Render(viewport);
 521                 position_text.Render(viewport);
 522                 orientation_text.Render(viewport);
 523                 if (show_block) {
 524                         block_text.Render(viewport);
 525                 } else if (show_entity) {
 526                         entity_text.Render(viewport);
 527                 }
 528                 if (show_net) {
 529                         bandwidth_text.Render(viewport);
 530                         rtt_text.Render(viewport);
 531                         packet_loss_text.Render(viewport);
 532                 }
 533         }
 534 }
 535
 536
 537 InteractiveManipulator::InteractiveManipulator(Audio &audio, const SoundBank &sounds, Entity &player)
 538 : player(player)
 539 , audio(audio)
 540 , sounds(sounds) {
 541
 542 }
 543
 544 void InteractiveManipulator::SetBlock(Chunk &chunk, int index, const Block &block) {
 545         const BlockType &old_type = chunk.Type(index);
 546         chunk.SetBlock(index, block);
 547         const BlockType &new_type = chunk.Type(index);
 548         glm::vec3 coords = chunk.ToSceneCoords(player.ChunkCoords(), Chunk::ToCoords(index));
 549         if (new_type.id == 0) {
 550                 if (old_type.remove_sound >= 0) {
 551                         audio.Play(sounds[old_type.remove_sound], coords);
 552                 }
 553         } else {
 554                 if (new_type.place_sound >= 0) {
 555                         audio.Play(sounds[new_type.place_sound], coords);
 556                 }
 557         }
 558 }
 559
 560
 561 Interface::Interface(
 562         Config &config,
 563         const Keymap &keymap,
 564         PlayerController &pc,
 565         ClientController &cc)
 566 : config(config)
 567 , keymap(keymap)
 568 , player_ctrl(pc)
 569 , client_ctrl(cc)
 570 , fwd(0)
 571 , rev(0)
 572 , num_slots(10)
 573 , locked(false) {
 574
 575 }
 576
 577 void Interface::Lock() {
 578         fwd = glm::ivec3(0);
 579         rev = glm::ivec3(0);
 580         locked = true;
 581 }
 582
 583 void Interface::Unlock() {
 584         locked = false;
 585 }
 586
 587 void Interface::HandlePress(const SDL_KeyboardEvent &event) {
 588         if (!config.input.keyboard) return;
 589
 590         Keymap::Action action = keymap.Lookup(event);
 591         switch (action) {
 592                 case Keymap::MOVE_FORWARD:
 593                         rev.z = 1;
 594                         UpdateMovement();
 595                         break;
 596                 case Keymap::MOVE_BACKWARD:
 597                         fwd.z = 1;
 598                         UpdateMovement();
 599                         break;
 600                 case Keymap::MOVE_LEFT:
 601                         rev.x = 1;
 602                         UpdateMovement();
 603                         break;
 604                 case Keymap::MOVE_RIGHT:
 605                         fwd.x = 1;
 606                         UpdateMovement();
 607                         break;
 608                 case Keymap::MOVE_UP:
 609                         fwd.y = 1;
 610                         UpdateMovement();
 611                         break;
 612                 case Keymap::MOVE_DOWN:
 613                         rev.y = 1;
 614                         UpdateMovement();
 615                         break;
 616
 617                 case Keymap::PRIMARY:
 618                         player_ctrl.StartPrimaryAction();
 619                         break;
 620                 case Keymap::SECONDARY:
 621                         player_ctrl.StartSecondaryAction();
 622                         break;
 623                 case Keymap::TERTIARY:
 624                         player_ctrl.StartTertiaryAction();
 625                         break;
 626
 627                 case Keymap::INV_NEXT:
 628                         InvRel(1);
 629                         break;
 630                 case Keymap::INV_PREVIOUS:
 631                         InvRel(-1);
 632                         break;
 633                 case Keymap::INV_1:
 634                 case Keymap::INV_2:
 635                 case Keymap::INV_3:
 636                 case Keymap::INV_4:
 637                 case Keymap::INV_5:
 638                 case Keymap::INV_6:
 639                 case Keymap::INV_7:
 640                 case Keymap::INV_8:
 641                 case Keymap::INV_9:
 642                 case Keymap::INV_10:
 643                         InvAbs(action - Keymap::INV_1);
 644                         break;
 645
 646                 case Keymap::EXIT:
 647                         client_ctrl.Exit();
 648                         break;
 649
 650                 case Keymap::TOGGLE_AUDIO:
 651                         client_ctrl.SetAudio(!config.audio.enabled);
 652                         break;
 653                 case Keymap::TOGGLE_VIDEO:
 654                         client_ctrl.SetVideo(!config.video.world);
 655                         break;
 656                 case Keymap::TOGGLE_HUD:
 657                         client_ctrl.SetHUD(!config.video.hud);
 658                         break;
 659                 case Keymap::TOGGLE_DEBUG:
 660                         client_ctrl.SetDebug(!config.video.debug);
 661                         break;
 662                 case Keymap::CAMERA_NEXT:
 663                         client_ctrl.NextCamera();
 664                         break;
 665
 666                 default:
 667                         break;
 668         }
 669 }
 670
 671 void Interface::HandleRelease(const SDL_KeyboardEvent &event) {
 672         if (!config.input.keyboard) return;
 673
 674         switch (keymap.Lookup(event)) {
 675                 case Keymap::MOVE_FORWARD:
 676                         rev.z = 0;
 677                         UpdateMovement();
 678                         break;
 679                 case Keymap::MOVE_BACKWARD:
 680                         fwd.z = 0;
 681                         UpdateMovement();
 682                         break;
 683                 case Keymap::MOVE_LEFT:
 684                         rev.x = 0;
 685                         UpdateMovement();
 686                         break;
 687                 case Keymap::MOVE_RIGHT:
 688                         fwd.x = 0;
 689                         UpdateMovement();
 690                         break;
 691                 case Keymap::MOVE_UP:
 692                         fwd.y = 0;
 693                         UpdateMovement();
 694                         break;
 695                 case Keymap::MOVE_DOWN:
 696                         rev.y = 0;
 697                         UpdateMovement();
 698                         break;
 699
 700                 case Keymap::PRIMARY:
 701                         player_ctrl.StopPrimaryAction();
 702                         break;
 703                 case Keymap::SECONDARY:
 704                         player_ctrl.StopSecondaryAction();
 705                         break;
 706                 case Keymap::TERTIARY:
 707                         player_ctrl.StopTertiaryAction();
 708                         break;
 709
 710                 default:
 711                         break;
 712         }
 713 }
 714
 715 void Interface::Handle(const SDL_MouseMotionEvent &event) {
 716         if (locked || !config.input.mouse) return;
 717         player_ctrl.TurnHead(
 718                 event.yrel * config.input.pitch_sensitivity,
 719                 event.xrel * config.input.yaw_sensitivity);
 720 }
 721
 722 void Interface::HandlePress(const SDL_MouseButtonEvent &event) {
 723         if (!config.input.mouse) return;
 724
 725         switch (event.button) {
 726                 case SDL_BUTTON_LEFT:
 727                         player_ctrl.StartPrimaryAction();
 728                         break;
 729                 case SDL_BUTTON_RIGHT:
 730                         player_ctrl.StartSecondaryAction();
 731                         break;
 732                 case SDL_BUTTON_MIDDLE:
 733                         player_ctrl.StartTertiaryAction();
 734                         break;
 735         }
 736 }
 737
 738 void Interface::HandleRelease(const SDL_MouseButtonEvent &event) {
 739         if (!config.input.mouse) return;
 740
 741         switch (event.button) {
 742                 case SDL_BUTTON_LEFT:
 743                         player_ctrl.StopPrimaryAction();
 744                         break;
 745                 case SDL_BUTTON_RIGHT:
 746                         player_ctrl.StopSecondaryAction();
 747                         break;
 748                 case SDL_BUTTON_MIDDLE:
 749                         player_ctrl.StopTertiaryAction();
 750                         break;
 751         }
 752 }
 753
 754
 755 void Interface::Handle(const SDL_MouseWheelEvent &event) {
 756         if (!config.input.mouse) return;
 757
 758         if (event.y < 0) {
 759                 InvRel(1);
 760         } else if (event.y > 0) {
 761                 InvRel(-1);
 762         }
 763 }
 764
 765 void Interface::UpdateMovement() {
 766         player_ctrl.SetMovement(glm::vec3(fwd - rev));
 767 }
 768
 769 void Interface::InvAbs(int s) {
 770         int slot = s % num_slots;
 771         while (slot < 0) {
 772                 slot += num_slots;
 773         }
 774         player_ctrl.SelectInventory(slot);
 775 }
 776
 777 void Interface::InvRel(int delta) {
 778         InvAbs(player_ctrl.GetPlayer().GetInventorySlot() + delta);
 779 }
 780
 781
 782 Keymap::Keymap()
 783 : codemap{ NONE } {
 784
 785 }
 786
 787 void Keymap::Map(SDL_Scancode scancode, Action action) {
 788         if (scancode > MAX_SCANCODE) {
 789                 throw std::runtime_error("refusing to map scancode: too damn high");
 790         }
 791         codemap[scancode] = action;
 792 }
 793
 794 Keymap::Action Keymap::Lookup(SDL_Scancode scancode) const {
 795         if (scancode < NUM_SCANCODES) {
 796                 return codemap[scancode];
 797         } else {
 798                 return NONE;
 799         }
 800 }
 801
 802
 803 void Keymap::LoadDefault() {
 804         Map(SDL_SCANCODE_UP, MOVE_FORWARD);
 805         Map(SDL_SCANCODE_W, MOVE_FORWARD);
 806         Map(SDL_SCANCODE_DOWN, MOVE_BACKWARD);
 807         Map(SDL_SCANCODE_S, MOVE_BACKWARD);
 808         Map(SDL_SCANCODE_LEFT, MOVE_LEFT);
 809         Map(SDL_SCANCODE_A, MOVE_LEFT);
 810         Map(SDL_SCANCODE_RIGHT, MOVE_RIGHT);
 811         Map(SDL_SCANCODE_D, MOVE_RIGHT);
 812         Map(SDL_SCANCODE_SPACE, MOVE_UP);
 813         Map(SDL_SCANCODE_RSHIFT, MOVE_UP);
 814         Map(SDL_SCANCODE_LSHIFT, MOVE_DOWN);
 815         Map(SDL_SCANCODE_LCTRL, MOVE_DOWN);
 816         Map(SDL_SCANCODE_RCTRL, MOVE_DOWN);
 817
 818         Map(SDL_SCANCODE_TAB, INV_NEXT);
 819         Map(SDL_SCANCODE_RIGHTBRACKET, INV_NEXT);
 820         Map(SDL_SCANCODE_LEFTBRACKET, INV_PREVIOUS);
 821         Map(SDL_SCANCODE_1, INV_1);
 822         Map(SDL_SCANCODE_2, INV_2);
 823         Map(SDL_SCANCODE_3, INV_3);
 824         Map(SDL_SCANCODE_4, INV_4);
 825         Map(SDL_SCANCODE_5, INV_5);
 826         Map(SDL_SCANCODE_6, INV_6);
 827         Map(SDL_SCANCODE_7, INV_7);
 828         Map(SDL_SCANCODE_8, INV_8);
 829         Map(SDL_SCANCODE_9, INV_9);
 830         Map(SDL_SCANCODE_0, INV_10);
 831
 832         Map(SDL_SCANCODE_INSERT, SECONDARY);
 833         Map(SDL_SCANCODE_MENU, TERTIARY);
 834         Map(SDL_SCANCODE_DELETE, PRIMARY);
 835         Map(SDL_SCANCODE_BACKSPACE, PRIMARY);
 836
 837         Map(SDL_SCANCODE_F1, TOGGLE_HUD);
 838         Map(SDL_SCANCODE_F2, TOGGLE_VIDEO);
 839         Map(SDL_SCANCODE_F3, TOGGLE_DEBUG);
 840         Map(SDL_SCANCODE_F4, TOGGLE_AUDIO);
 841         Map(SDL_SCANCODE_F5, CAMERA_NEXT);
 842
 843         Map(SDL_SCANCODE_ESCAPE, EXIT);
 844 }
 845
 846
 847 void Keymap::Load(std::istream &is) {
 848         TokenStreamReader in(is);
 849         std::string key_name;
 850         std::string action_name;
 851         SDL_Scancode key;
 852         Action action;
 853         while (in.HasMore()) {
 854                 if (in.Peek().type == Token::STRING) {
 855                         in.ReadString(key_name);
 856                         key = SDL_GetScancodeFromName(key_name.c_str());
 857                 } else {
 858                         key = SDL_Scancode(in.GetInt());
 859                 }
 860                 in.Skip(Token::EQUALS);
 861                 in.ReadIdentifier(action_name);
 862                 action = StringToAction(action_name);
 863                 if (in.HasMore() && in.Peek().type == Token::SEMICOLON) {
 864                         in.Skip(Token::SEMICOLON);
 865                 }
 866                 Map(key, action);
 867         }
 868 }
 869
 870 void Keymap::Save(std::ostream &out) {
 871         for (unsigned int i = 0; i < NUM_SCANCODES; ++i) {
 872                 if (codemap[i] == NONE) continue;
 873
 874                 const char *str = SDL_GetScancodeName(SDL_Scancode(i));
 875                 if (str && *str) {
 876                         out << '"';
 877                         while (*str) {
 878                                 if (*str == '"') {
 879                                         out << "\\\"";
 880                                 } else {
 881                                         out << *str;
 882                                 }
 883                                 ++str;
 884                         }
 885                         out << '"';
 886                 } else {
 887                         out << i;
 888                 }
 889
 890                 out << " = " << ActionToString(codemap[i]) << std::endl;;
 891         }
 892 }
 893
 894
 895 namespace {
 896
 897 std::map<std::string, Keymap::Action> action_map = {
 898         { "none", Keymap::NONE },
 899         { "move_forward", Keymap::MOVE_FORWARD },
 900         { "move_backward", Keymap::MOVE_BACKWARD },
 901         { "move_left", Keymap::MOVE_LEFT },
 902         { "move_right", Keymap::MOVE_RIGHT },
 903         { "move_up", Keymap::MOVE_UP },
 904         { "move_down", Keymap::MOVE_DOWN },
 905
 906         { "primary", Keymap::PRIMARY },
 907         { "secondary", Keymap::SECONDARY },
 908         { "tertiary", Keymap::TERTIARY },
 909
 910         { "inventory_next", Keymap::INV_NEXT },
 911         { "inventory_prev", Keymap::INV_PREVIOUS },
 912         { "inventory_1", Keymap::INV_1 },
 913         { "inventory_2", Keymap::INV_2 },
 914         { "inventory_3", Keymap::INV_3 },
 915         { "inventory_4", Keymap::INV_4 },
 916         { "inventory_5", Keymap::INV_5 },
 917         { "inventory_6", Keymap::INV_6 },
 918         { "inventory_7", Keymap::INV_7 },
 919         { "inventory_8", Keymap::INV_8 },
 920         { "inventory_9", Keymap::INV_9 },
 921         { "inventory_10", Keymap::INV_10 },
 922
 923         { "toggle_audio", Keymap::TOGGLE_AUDIO },
 924         { "toggle_video", Keymap::TOGGLE_VIDEO },
 925         { "toggle_hud", Keymap::TOGGLE_HUD },
 926         { "toggle_debug", Keymap::TOGGLE_DEBUG },
 927         { "camera_next", Keymap::CAMERA_NEXT },
 928
 929         { "exit", Keymap::EXIT },
 930 };
 931
 932 }
 933
 934 const char *Keymap::ActionToString(Action action) {
 935         for (const auto &entry : action_map) {
 936                 if (action == entry.second) {
 937                         return entry.first.c_str();
 938                 }
 939         }
 940         return "none";
 941 }
 942
 943 Keymap::Action Keymap::StringToAction(const std::string &str) {
 944         auto entry = action_map.find(str);
 945         if (entry != action_map.end()) {
 946                 return entry->second;
 947         } else {
 948                 std::cerr << "unknown action \"" << str << '"' << std::endl;
 949                 return NONE;
 950         }
 951 }
 952
 953 }