src/hud.cpp

   1 #include "hud.hpp"
   2
   3 #include "block.hpp"
   4 #include "init.hpp"
   5 #include "shader.hpp"
   6 #include "shape.hpp"
   7
   8 #include <glm/gtc/matrix_transform.hpp>
   9
  10
  11 namespace blank {
  12
  13 HUD::HUD(const BlockTypeRegistry &types)
  14 : types(types)
  15 , block()
  16 , block_buf()
  17 , block_transform(1.0f)
  18 , block_visible(false)
  19 , crosshair()
  20 , crosshair_transform(1.0f)
  21 , near(100.0f)
  22 , far(-100.0f)
  23 , projection(glm::ortho(0.0f, 1.0f, 1.0f, 0.0f, near, far))
  24 , view(glm::translate(glm::mat4(1.0f), glm::vec3(-0.5f, -0.5f, 0))) {
  25         block_transform = glm::translate(block_transform, glm::vec3(50.0f, 50.0f, 0.0f));
  26         block_transform = glm::scale(block_transform, glm::vec3(50.0f));
  27         block_transform = glm::rotate(block_transform, 3.5f, glm::vec3(1.0f, 0.0f, 0.0f));
  28         block_transform = glm::rotate(block_transform, 0.35f, glm::vec3(0.0f, 1.0f, 0.0f));
  29
  30         crosshair.vertices = std::vector<glm::vec3>({
  31                 { -10.0f,   0.0f, 0.0f }, { 10.0f,  0.0f, 0.0f },
  32                 {   0.0f, -10.0f, 0.0f }, {  0.0f, 10.0f, 0.0f },
  33         });
  34         crosshair.indices = std::vector<OutlineModel::Index>({
  35                 0, 1, 2, 3
  36         });
  37         crosshair.colors.resize(4, { 10.0f, 10.0f, 10.0f });
  38         crosshair.Invalidate();
  39 }
  40
  41
  42 void HUD::Viewport(float width, float height) {
  43         Viewport(0, 0, width, height);
  44 }
  45
  46 void HUD::Viewport(float x, float y, float width, float height) {
  47         projection = glm::ortho(x, width, height, y, near, far);
  48         crosshair_transform = glm::translate(glm::mat4(1.0f), glm::vec3(width * 0.5f, height * 0.5f, 0.0f));
  49 }
  50
  51
  52 void HUD::Display(const Block &b) {
  53         const BlockType &type = *types.Get(b.type);
  54
  55         block_buf.Clear();
  56         type.FillModel(block_buf, b.Transform());
  57         block.Update(block_buf);
  58         block_visible = type.visible;
  59 }
  60
  61
  62 void HUD::Render(DirectionalLighting &program) {
  63         if (block_visible) {
  64                 program.SetLightDirection({ 1.0f, 3.0f, 5.0f });
  65                 GLContext::ClearDepthBuffer();
  66                 program.SetMVP(block_transform, view, projection);
  67                 block.Draw();
  68                 program.SetM(crosshair_transform);
  69                 crosshair.Draw();
  70         }
  71 }
  72
  73 }