src/hud.cpp

   1 #include "hud.hpp"
   2
   3 #include "init.hpp"
   4 #include "shape.hpp"
   5
   6 #include <glm/gtc/matrix_transform.hpp>
   7
   8
   9 namespace blank {
  10
  11 HUD::HUD()
  12 : block()
  13 , block_buf()
  14 , block_transform(1.0f)
  15 , block_visible(false)
  16 , crosshair()
  17 , crosshair_transform(1.0f)
  18 , near(100.0f)
  19 , far(-100.0f)
  20 , projection(glm::ortho(0.0f, 1.0f, 1.0f, 0.0f, near, far))
  21 , view(glm::translate(glm::mat4(1.0f), glm::vec3(-0.5f, -0.5f, 0))) {
  22         block_transform = glm::translate(block_transform, glm::vec3(50.0f, 50.0f, 0.0f));
  23         block_transform = glm::scale(block_transform, glm::vec3(50.0f));
  24         block_transform = glm::rotate(block_transform, 3.5f, glm::vec3(1.0f, 0.0f, 0.0f));
  25         block_transform = glm::rotate(block_transform, 0.85f, glm::vec3(0.0f, 1.0f, 0.0f));
  26
  27         crosshair.vertices = std::vector<glm::vec3>({
  28                 { -10.0f,   0.0f, 0.0f }, { 10.0f,  0.0f, 0.0f },
  29                 {   0.0f, -10.0f, 0.0f }, {  0.0f, 10.0f, 0.0f },
  30         });
  31         crosshair.indices = std::vector<OutlineModel::Index>({
  32                 0, 1, 2, 3
  33         });
  34         crosshair.colors.resize(4, { 10.0f, 10.0f, 10.0f });
  35         crosshair.Invalidate();
  36 }
  37
  38
  39 void HUD::Viewport(float width, float height) {
  40         Viewport(0, 0, width, height);
  41 }
  42
  43 void HUD::Viewport(float x, float y, float width, float height) {
  44         projection = glm::ortho(x, width, height, y, near, far);
  45         crosshair_transform = glm::translate(glm::mat4(1.0f), glm::vec3(width * 0.5f, height * 0.5f, 0.0f));
  46 }
  47
  48
  49 void HUD::Display(const BlockType &type) {
  50         block_buf.Clear();
  51         type.FillModel(block_buf);
  52         block.Update(block_buf);
  53         block_visible = type.visible;
  54 }
  55
  56
  57 void HUD::Render(DirectionalLighting &program) {
  58         if (block_visible) {
  59                 program.SetLightDirection({ 1.0f, 3.0f, 5.0f });
  60                 GLContext::ClearDepthBuffer();
  61                 program.SetMVP(block_transform, view, projection);
  62                 block.Draw();
  63                 program.SetM(crosshair_transform);
  64                 crosshair.Draw();
  65         }
  66 }
  67
  68 }