feat: add text rendering with SDF's

lightkeeper/include/Lightkeeper.h

@@ -8,6 +8,7 @@
 #include <destrum/Graphics/RenderResources.h>
 
 #include "destrum/Graphics/Resources/Cubemap.h"
+#include "destrum/Graphics/Resources/Font.h"
 #include "destrum/ObjectModel/GameObject.h"
 
 #include <scenes/MainScene.h>
@@ -51,6 +52,7 @@ private:
     MainSceneObjects mainScene{};
 
     ImageID debug2DTexture{NULL_IMAGE_ID};
+    Font hudFont;
 
     char scenePath[512]{"scenes/debug_scene.json"};
     char newSceneName[128]{"EmptyScene"};

lightkeeper/src/Lightkeeper.cpp

@@ -41,6 +41,9 @@ void LightKeeper::customInit()
 
     debug2DTexture = resources.loadImageFromFile(
         gfxDevice, AssetFS::GetInstance().GetFullPath("engine://textures/kobe.png"));
+
+    hudFont = Font::LoadFromFile(AssetFS::GetInstance().GetFullPath("engine://fonts/Roboto-Medium.ttf"));
+    hudFont.Upload(gfxDevice, resources);
 }
 
 void LightKeeper::setupSkybox()
@@ -91,6 +94,16 @@ void LightKeeper::drawCrosshair()
     renderer2D.DrawLine(center - glm::vec2{0.0f, halfArm}, center + glm::vec2{0.0f, halfArm}, thickness, color);
     if (focused) {
         renderer2D.DrawEllipseOutline(center, glm::vec2{14.0f}, thickness, color);
+
+        constexpr std::string_view prompt = "[E] Interact";
+        constexpr float promptSize = 22.0f;
+        const glm::vec2 promptExtent = hudFont.MeasureText(prompt, promptSize);
+        renderer2D.DrawText(
+            hudFont,
+            prompt,
+            center + glm::vec2{-promptExtent.x * 0.5f, 28.0f},
+            promptSize,
+            TextStyle{.color = color, .outline = 2.0f, .outlineColor = {0.0f, 0.0f, 0.0f, 0.75f}});
     }
 }