src/interface.cpp

   1 #include "interface.hpp"
   2
   3 #include "geometry.hpp"
   4 #include "world.hpp"
   5
   6 #include <glm/glm.hpp>
   7 #include <glm/gtc/matrix_transform.hpp>
   8
   9
  10 namespace blank {
  11
  12 Interface::Interface(World &world)
  13 : world(world)
  14 , ctrl(world.Player())
  15 , hud(world.BlockTypes())
  16 , aim_chunk(nullptr)
  17 , aim_block(0)
  18 , aim_normal()
  19 , outline()
  20 , outline_transform(1.0f)
  21 , move_velocity(0.005f)
  22 , pitch_sensitivity(-0.0025f)
  23 , yaw_sensitivity(-0.001f)
  24 , remove(0)
  25 , selection(1)
  26 , front(false)
  27 , back(false)
  28 , left(false)
  29 , right(false)
  30 , up(false)
  31 , down(false) {
  32         hud.Viewport(960, 600);
  33         hud.Display(selection);
  34 }
  35
  36
  37 void Interface::Handle(const SDL_KeyboardEvent &event) {
  38         switch (event.keysym.sym) {
  39                 case SDLK_w:
  40                         front = event.state == SDL_PRESSED;
  41                         break;
  42                 case SDLK_s:
  43                         back = event.state == SDL_PRESSED;
  44                         break;
  45                 case SDLK_a:
  46                         left = event.state == SDL_PRESSED;
  47                         break;
  48                 case SDLK_d:
  49                         right = event.state == SDL_PRESSED;
  50                         break;
  51                 case SDLK_SPACE:
  52                         up = event.state == SDL_PRESSED;
  53                         break;
  54                 case SDLK_LSHIFT:
  55                         down = event.state == SDL_PRESSED;
  56                         break;
  57
  58                 case SDLK_q:
  59                         if (event.state == SDL_PRESSED) {
  60                                 FaceBlock();
  61                         }
  62                         break;
  63                 case SDLK_e:
  64                         if (event.state == SDL_PRESSED) {
  65                                 TurnBlock();
  66                         }
  67                         break;
  68         }
  69 }
  70
  71 void Interface::FaceBlock() {
  72         selection.SetFace(Block::Face((selection.GetFace() + 1) % Block::FACE_COUNT));
  73         hud.Display(selection);
  74 }
  75
  76 void Interface::TurnBlock() {
  77         selection.SetTurn(Block::Turn((selection.GetTurn() + 1) % Block::TURN_COUNT));
  78         hud.Display(selection);
  79 }
  80
  81
  82 void Interface::Handle(const SDL_MouseMotionEvent &event) {
  83         ctrl.RotateYaw(event.xrel * yaw_sensitivity);
  84         ctrl.RotatePitch(event.yrel * pitch_sensitivity);
  85 }
  86
  87 void Interface::Handle(const SDL_MouseButtonEvent &event) {
  88         if (event.state != SDL_PRESSED) return;
  89
  90         if (event.button == 1) {
  91                 RemoveBlock();
  92         } else if (event.button == 2) {
  93                 PickBlock();
  94         } else if (event.button == 3) {
  95                 PlaceBlock();
  96         }
  97 }
  98
  99 void Interface::PickBlock() {
 100         if (!aim_chunk) return;
 101         selection = aim_chunk->BlockAt(aim_block);
 102         hud.Display(selection);
 103 }
 104
 105 void Interface::PlaceBlock() {
 106         if (!aim_chunk) return;
 107         Chunk *mod_chunk = aim_chunk;
 108         glm::vec3 next_pos = Chunk::ToCoords(aim_block) + aim_normal;
 109         if (!Chunk::InBounds(next_pos)) {
 110                 mod_chunk = &world.Next(*aim_chunk, aim_normal);
 111                 next_pos -= aim_normal * glm::vec3(Chunk::Extent());
 112         }
 113         mod_chunk->BlockAt(next_pos) = selection;
 114         mod_chunk->Invalidate();
 115 }
 116
 117 void Interface::RemoveBlock() {
 118         if (!aim_chunk) return;
 119         aim_chunk->BlockAt(aim_block) = remove;
 120         aim_chunk->Invalidate();
 121 }
 122
 123
 124 void Interface::Handle(const SDL_MouseWheelEvent &event) {
 125         if (event.y < 0) {
 126                 SelectNext();
 127         } else if (event.y > 0) {
 128                 SelectPrevious();
 129         }
 130 }
 131
 132 void Interface::SelectNext() {
 133         ++selection.type;
 134         if (size_t(selection.type) >= world.BlockTypes().Size()) {
 135                 selection.type = 1;
 136         }
 137         hud.Display(selection);
 138 }
 139
 140 void Interface::SelectPrevious() {
 141         --selection.type;
 142         if (selection.type <= 0) {
 143                 selection.type = world.BlockTypes().Size() - 1;
 144         }
 145         hud.Display(selection);
 146 }
 147
 148 void Interface::Handle(const SDL_WindowEvent &event) {
 149         if (event.event == SDL_WINDOWEVENT_RESIZED) {
 150                 hud.Viewport(event.data1, event.data2);
 151         }
 152 }
 153
 154
 155 void Interface::Update(int dt) {
 156         glm::vec3 vel;
 157         if (right && !left) {
 158                 vel.x = move_velocity;
 159         } else if (left && !right) {
 160                 vel.x = -move_velocity;
 161         }
 162         if (up && !down) {
 163                 vel.y = move_velocity;
 164         } else if (down && !up) {
 165                 vel.y = -move_velocity;
 166         }
 167         if (back && !front) {
 168                 vel.z = move_velocity;
 169         } else if (front && !back) {
 170                 vel.z = -move_velocity;
 171         }
 172         ctrl.Velocity(vel);
 173         ctrl.Update(dt);
 174
 175         Ray aim = ctrl.Aim();
 176         float dist;
 177         if (world.Intersection(aim, glm::mat4(1.0f), &aim_chunk, &aim_block, &dist, &aim_normal)) {
 178                 outline.Clear();
 179                 aim_chunk->Type(aim_chunk->BlockAt(aim_block)).FillOutlineModel(outline);
 180                 outline_transform = glm::scale(glm::mat4(1.0f), glm::vec3(1.0002f));
 181                 outline_transform = aim_chunk->Transform(world.Player().ChunkCoords());
 182                 outline_transform *= aim_chunk->ToTransform(aim_block);
 183         } else {
 184                 aim_chunk = nullptr;
 185         }
 186
 187 }
 188
 189
 190 void Interface::Render(DirectionalLighting &program) {
 191         if (aim_chunk) {
 192                 program.SetM(outline_transform);
 193                 outline.Draw();
 194         }
 195
 196         hud.Render(program);
 197 }
 198
 199 }