src/ui/ui.cpp

   1 #include "HUD.hpp"
   2 #include "Interface.hpp"
   3
   4 #include "../app/init.hpp"
   5 #include "../graphics/DirectionalLighting.hpp"
   6 #include "../model/shapes.hpp"
   7 #include "../world/World.hpp"
   8
   9 #include <iostream>
  10 #include <glm/gtc/matrix_transform.hpp>
  11 #include <glm/gtx/io.hpp>
  12
  13
  14 namespace blank {
  15
  16 HUD::HUD(const BlockTypeRegistry &types)
  17 : types(types)
  18 , block()
  19 , block_buf()
  20 , block_transform(1.0f)
  21 , block_visible(false)
  22 , crosshair()
  23 , crosshair_transform(1.0f)
  24 , near(100.0f)
  25 , far(-100.0f)
  26 , projection(glm::ortho(0.0f, 1.0f, 1.0f, 0.0f, near, far))
  27 , view(glm::translate(glm::mat4(1.0f), glm::vec3(-0.5f, -0.5f, 0))) {
  28         block_transform = glm::translate(block_transform, glm::vec3(50.0f, 50.0f, 0.0f));
  29         block_transform = glm::scale(block_transform, glm::vec3(50.0f));
  30         block_transform = glm::rotate(block_transform, 3.5f, glm::vec3(1.0f, 0.0f, 0.0f));
  31         block_transform = glm::rotate(block_transform, 0.35f, glm::vec3(0.0f, 1.0f, 0.0f));
  32
  33         crosshair.vertices = std::vector<glm::vec3>({
  34                 { -10.0f,   0.0f, 0.0f }, { 10.0f,  0.0f, 0.0f },
  35                 {   0.0f, -10.0f, 0.0f }, {  0.0f, 10.0f, 0.0f },
  36         });
  37         crosshair.indices = std::vector<OutlineModel::Index>({
  38                 0, 1, 2, 3
  39         });
  40         crosshair.colors.resize(4, { 10.0f, 10.0f, 10.0f });
  41         crosshair.Invalidate();
  42 }
  43
  44
  45 void HUD::Viewport(float width, float height) noexcept {
  46         Viewport(0, 0, width, height);
  47 }
  48
  49 void HUD::Viewport(float x, float y, float width, float height) noexcept {
  50         projection = glm::ortho(x, width, height, y, near, far);
  51         crosshair_transform = glm::translate(glm::mat4(1.0f), glm::vec3(width * 0.5f, height * 0.5f, 0.0f));
  52 }
  53
  54
  55 void HUD::Display(const Block &b) {
  56         const BlockType &type = types.Get(b.type);
  57
  58         block_buf.Clear();
  59         type.FillModel(block_buf, b.Transform());
  60         block.Update(block_buf);
  61         block_visible = type.visible;
  62 }
  63
  64
  65 void HUD::Render(DirectionalLighting &program) noexcept {
  66         if (block_visible) {
  67                 program.SetLightDirection({ 1.0f, 3.0f, 5.0f });
  68                 // disable distance fog
  69                 program.SetFogDensity(0.0f);
  70                 GLContext::ClearDepthBuffer();
  71                 program.SetMVP(block_transform, view, projection);
  72                 block.Draw();
  73                 program.SetM(crosshair_transform);
  74                 crosshair.Draw();
  75         }
  76 }
  77
  78
  79 Interface::Interface(const Config &config, World &world)
  80 : world(world)
  81 , ctrl(world.Player())
  82 , hud(world.BlockTypes())
  83 , aim{{ 0, 0, 0 }, { 0, 0, -1 }}
  84 , aim_chunk(nullptr)
  85 , aim_block(0)
  86 , aim_normal()
  87 , outline()
  88 , outline_transform(1.0f)
  89 , config(config)
  90 , place_timer(256)
  91 , remove_timer(256)
  92 , remove(0)
  93 , selection(1)
  94 , fwd(0)
  95 , rev(0) {
  96         hud.Viewport(960, 600);
  97         hud.Display(selection);
  98 }
  99
 100
 101 void Interface::HandlePress(const SDL_KeyboardEvent &event) {
 102         if (config.keyboard_disabled) return;
 103
 104         switch (event.keysym.sym) {
 105                 case SDLK_w:
 106                         rev.z = 1;
 107                         break;
 108                 case SDLK_s:
 109                         fwd.z = 1;
 110                         break;
 111                 case SDLK_a:
 112                         rev.x = 1;
 113                         break;
 114                 case SDLK_d:
 115                         fwd.x = 1;
 116                         break;
 117                 case SDLK_SPACE:
 118                         fwd.y = 1;
 119                         break;
 120                 case SDLK_LSHIFT:
 121                         rev.y = 1;
 122                         break;
 123
 124                 case SDLK_q:
 125                         FaceBlock();
 126                         break;
 127                 case SDLK_e:
 128                         TurnBlock();
 129                         break;
 130
 131                 case SDLK_b:
 132                         PrintBlockInfo();
 133                         break;
 134                 case SDLK_c:
 135                         PrintChunkInfo();
 136                         break;
 137                 case SDLK_l:
 138                         PrintLightInfo();
 139                         break;
 140                 case SDLK_p:
 141                         PrintSelectionInfo();
 142                         break;
 143         }
 144 }
 145
 146 void Interface::HandleRelease(const SDL_KeyboardEvent &event) {
 147         if (config.keyboard_disabled) return;
 148
 149         switch (event.keysym.sym) {
 150                 case SDLK_w:
 151                         rev.z = 0;
 152                         break;
 153                 case SDLK_s:
 154                         fwd.z = 0;
 155                         break;
 156                 case SDLK_a:
 157                         rev.x = 0;
 158                         break;
 159                 case SDLK_d:
 160                         fwd.x = 0;
 161                         break;
 162                 case SDLK_SPACE:
 163                         fwd.y = 0;
 164                         break;
 165                 case SDLK_LSHIFT:
 166                         rev.y = 0;
 167                         break;
 168         }
 169 }
 170
 171 void Interface::FaceBlock() {
 172         selection.SetFace(Block::Face((selection.GetFace() + 1) % Block::FACE_COUNT));
 173         hud.Display(selection);
 174 }
 175
 176 void Interface::TurnBlock() {
 177         selection.SetTurn(Block::Turn((selection.GetTurn() + 1) % Block::TURN_COUNT));
 178         hud.Display(selection);
 179 }
 180
 181 void Interface::PrintBlockInfo() {
 182         std::cout << std::endl;
 183         if (!aim_chunk) {
 184                 std::cout << "not looking at any block" << std::endl;
 185                 Ray aim = ctrl.Aim();
 186                 std::cout << "aim ray: " << aim.orig << ", " << aim.dir << std::endl;
 187                 return;
 188         }
 189         std::cout << "looking at block " << aim_block
 190                 << " " << Chunk::ToCoords(aim_block)
 191                 << " of chunk " << aim_chunk->Position()
 192                 << std::endl;
 193         Print(aim_chunk->BlockAt(aim_block));
 194 }
 195
 196 void Interface::PrintChunkInfo() {
 197         std::cout << std::endl;
 198         if (!aim_chunk) {
 199                 std::cout << "not looking at any block" << std::endl;
 200                 return;
 201         }
 202         std::cout << "looking at chunk "
 203                 << aim_chunk->Position()
 204                 << std::endl;
 205
 206         std::cout << "  neighbors:" << std::endl;
 207         if (aim_chunk->HasNeighbor(Block::FACE_LEFT)) {
 208                 std::cout << " left  " << aim_chunk->GetNeighbor(Block::FACE_LEFT).Position() << std::endl;
 209         }
 210         if (aim_chunk->HasNeighbor(Block::FACE_RIGHT)) {
 211                 std::cout << " right " << aim_chunk->GetNeighbor(Block::FACE_RIGHT).Position() << std::endl;
 212         }
 213         if (aim_chunk->HasNeighbor(Block::FACE_UP)) {
 214                 std::cout << " up    " << aim_chunk->GetNeighbor(Block::FACE_UP).Position() << std::endl;
 215         }
 216         if (aim_chunk->HasNeighbor(Block::FACE_DOWN)) {
 217                 std::cout << " down  " << aim_chunk->GetNeighbor(Block::FACE_DOWN).Position() << std::endl;
 218         }
 219         if (aim_chunk->HasNeighbor(Block::FACE_FRONT)) {
 220                 std::cout << " front " << aim_chunk->GetNeighbor(Block::FACE_FRONT).Position() << std::endl;
 221         }
 222         if (aim_chunk->HasNeighbor(Block::FACE_BACK)) {
 223                 std::cout << " back  " << aim_chunk->GetNeighbor(Block::FACE_BACK).Position() << std::endl;
 224         }
 225         std::cout << std::endl;
 226 }
 227
 228 void Interface::PrintLightInfo() {
 229         std::cout
 230                 << "light level " << world.PlayerChunk().GetLight(world.Player().Position())
 231                 << " at position " << world.Player().Position()
 232                 << std::endl;
 233 }
 234
 235 void Interface::PrintSelectionInfo() {
 236         std::cout << std::endl;
 237         Print(selection);
 238 }
 239
 240 void Interface::Print(const Block &block) {
 241         std::cout << "type: " << block.type
 242                 << ", face: " << block.GetFace()
 243                 << ", turn: " << block.GetTurn()
 244                 << std::endl;
 245 }
 246
 247
 248 void Interface::Handle(const SDL_MouseMotionEvent &event) {
 249         if (config.mouse_disabled) return;
 250         ctrl.RotateYaw(event.xrel * config.yaw_sensitivity);
 251         ctrl.RotatePitch(event.yrel * config.pitch_sensitivity);
 252 }
 253
 254 void Interface::HandlePress(const SDL_MouseButtonEvent &event) {
 255         if (config.mouse_disabled) return;
 256
 257         if (event.button == SDL_BUTTON_LEFT) {
 258                 RemoveBlock();
 259                 remove_timer.Start();
 260         } else if (event.button == SDL_BUTTON_MIDDLE) {
 261                 PickBlock();
 262         } else if (event.button == SDL_BUTTON_RIGHT) {
 263                 PlaceBlock();
 264                 place_timer.Start();
 265         }
 266 }
 267
 268 void Interface::HandleRelease(const SDL_MouseButtonEvent &event) {
 269         if (config.mouse_disabled) return;
 270
 271         if (event.button == SDL_BUTTON_LEFT) {
 272                 remove_timer.Stop();
 273         } else if (event.button == SDL_BUTTON_RIGHT) {
 274                 place_timer.Stop();
 275         }
 276 }
 277
 278 void Interface::PickBlock() {
 279         if (!aim_chunk) return;
 280         selection = aim_chunk->BlockAt(aim_block);
 281         hud.Display(selection);
 282 }
 283
 284 void Interface::PlaceBlock() {
 285         if (!aim_chunk) return;
 286         Chunk *mod_chunk = aim_chunk;
 287         glm::vec3 next_pos = Chunk::ToCoords(aim_block) + aim_normal;
 288         if (!Chunk::InBounds(next_pos)) {
 289                 mod_chunk = &world.Next(*aim_chunk, aim_normal);
 290                 next_pos -= aim_normal * glm::vec3(Chunk::Extent());
 291         }
 292         mod_chunk->SetBlock(next_pos, selection);
 293         mod_chunk->Invalidate();
 294 }
 295
 296 void Interface::RemoveBlock() noexcept {
 297         if (!aim_chunk) return;
 298         aim_chunk->SetBlock(aim_block, remove);
 299         aim_chunk->Invalidate();
 300 }
 301
 302
 303 void Interface::Handle(const SDL_MouseWheelEvent &event) {
 304         if (config.mouse_disabled) return;
 305
 306         if (event.y < 0) {
 307                 SelectNext();
 308         } else if (event.y > 0) {
 309                 SelectPrevious();
 310         }
 311 }
 312
 313 void Interface::SelectNext() {
 314         ++selection.type;
 315         if (size_t(selection.type) >= world.BlockTypes().Size()) {
 316                 selection.type = 1;
 317         }
 318         hud.Display(selection);
 319 }
 320
 321 void Interface::SelectPrevious() {
 322         --selection.type;
 323         if (selection.type <= 0) {
 324                 selection.type = world.BlockTypes().Size() - 1;
 325         }
 326         hud.Display(selection);
 327 }
 328
 329 void Interface::Handle(const SDL_WindowEvent &event) noexcept {
 330         if (event.event == SDL_WINDOWEVENT_RESIZED) {
 331                 hud.Viewport(event.data1, event.data2);
 332         }
 333 }
 334
 335
 336 void Interface::Update(int dt) {
 337         ctrl.Velocity(glm::vec3(fwd - rev) * config.move_velocity);
 338         ctrl.Update(dt);
 339
 340         place_timer.Update(dt);
 341         remove_timer.Update(dt);
 342
 343         aim = ctrl.Aim();
 344         CheckAim();
 345
 346         if (remove_timer.Hit()) {
 347                 RemoveBlock();
 348                 CheckAim();
 349         }
 350
 351         if (place_timer.Hit()) {
 352                 PlaceBlock();
 353                 CheckAim();
 354         }
 355 }
 356
 357 void Interface::CheckAim() {
 358         float dist;
 359         if (world.Intersection(aim, glm::mat4(1.0f), aim_chunk, aim_block, dist, aim_normal)) {
 360                 outline.Clear();
 361                 aim_chunk->Type(aim_chunk->BlockAt(aim_block)).FillOutlineModel(outline);
 362                 outline_transform = glm::scale(glm::vec3(1.0002f));
 363                 outline_transform *= aim_chunk->Transform(world.Player().ChunkCoords());
 364                 outline_transform *= aim_chunk->ToTransform(Chunk::ToPos(aim_block), aim_block);
 365         } else {
 366                 aim_chunk = nullptr;
 367         }
 368 }
 369
 370
 371 void Interface::Render(DirectionalLighting &program) noexcept {
 372         if (config.visual_disabled) return;
 373
 374         if (aim_chunk) {
 375                 program.SetM(outline_transform);
 376                 outline.Draw();
 377         }
 378
 379         hud.Render(program);
 380 }
 381
 382 }