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_transform(1.0f)
  14 , block_visible(false)
  15 , crosshair()
  16 , crosshair_transform(1.0f)
  17 , near(100.0f)
  18 , far(-100.0f)
  19 , projection(glm::ortho(0.0f, 1.0f, 1.0f, 0.0f, near, far))
  20 , view(glm::translate(glm::mat4(1.0f), glm::vec3(-0.5f, -0.5f, 0))) {
  21         block_transform = glm::translate(block_transform, glm::vec3(50.0f, 50.0f, 0.0f));
  22         block_transform = glm::scale(block_transform, glm::vec3(50.0f));
  23         block_transform = glm::rotate(block_transform, 3.5f, glm::vec3(1.0f, 0.0f, 0.0f));
  24         block_transform = glm::rotate(block_transform, 0.85f, glm::vec3(0.0f, 1.0f, 0.0f));
  25
  26         crosshair.vertices = std::vector<glm::vec3>({
  27                 { -10.0f,   0.0f, 0.0f }, { 10.0f,  0.0f, 0.0f },
  28                 {   0.0f, -10.0f, 0.0f }, {  0.0f, 10.0f, 0.0f },
  29         });
  30         crosshair.colors.resize(4, { 10.0f, 10.0f, 10.0f });
  31         crosshair.Invalidate();
  32 }
  33
  34
  35 void HUD::Viewport(float width, float height) {
  36         Viewport(0, 0, width, height);
  37 }
  38
  39 void HUD::Viewport(float x, float y, float width, float height) {
  40         projection = glm::ortho(x, width, height, y, near, far);
  41         crosshair_transform = glm::translate(glm::mat4(1.0f), glm::vec3(width * 0.5f, height * 0.5f, 0.0f));
  42 }
  43
  44
  45 void HUD::Display(const BlockType &type) {
  46         block.Clear();
  47         type.FillModel({ 0.0f, 0.0f, 0.0f }, block);
  48         block_visible = type.visible;
  49 }
  50
  51
  52 void HUD::Render(DirectionalLighting &program) {
  53         if (block_visible) {
  54                 program.SetLightDirection({ 1.0f, 3.0f, 5.0f });
  55                 GLContext::ClearDepthBuffer();
  56                 program.SetMVP(block_transform, view, projection);
  57                 block.Draw();
  58                 program.SetM(crosshair_transform);
  59                 crosshair.Draw();
  60         }
  61 }
  62
  63 }