feat: add forward+ rendering

tests/destrum_tests.cpp

@@ -22,6 +22,7 @@
 #include <destrum/Components/Physics/BoxCollider.h>
 #include <destrum/Components/Physics/Collider.h>
 #include <destrum/Components/Animator.h>
+#include <destrum/Components/LightComponent.h>
 #include <destrum/Components/Physics/Rigidbody.h>
 #include <destrum/Graphics/Material.h>
 #include <destrum/Graphics/Managers/LineRenderingManager.h>
@@ -171,6 +172,7 @@ namespace {
 
         const char* canonicalNames[] = {
             "MeshRendererComponent",
+            "LightComponent",
             "Rotator",
             "Spinner",
             "OrbitAndSpin",
@@ -447,6 +449,39 @@ namespace {
               "Animator scene data must not embed animation keyframes");
     }
 
+    void testLightComponentRoundTrip()
+    {
+        GameObject object{"light"};
+        auto* light = object.AddComponent<LightComponent>(LightType::Spot);
+        light->SetColor(glm::vec3{1.0f, 0.5f, 0.25f});
+        light->SetIntensity(4.0f);
+        light->SetRange(7.5f);
+        light->SetConeAngles(0.2f, 0.4f);
+
+        const auto data = light->Serialize();
+
+        GameObject loadedObject{"loaded light"};
+        auto* loaded = loadedObject.AddComponent<LightComponent>();
+        loaded->Deserialize(data);
+
+        check(loaded->GetType() == LightType::Spot,
+              "LightComponent must round-trip its type");
+        check(loaded->GetColor() == glm::vec3{1.0f, 0.5f, 0.25f},
+              "LightComponent must round-trip its color");
+        check(loaded->GetIntensity() == 4.0f && loaded->GetRange() == 7.5f,
+              "LightComponent must round-trip intensity and range");
+        check(loaded->GetInnerConeAngle() == 0.2f && loaded->GetOuterConeAngle() == 0.4f,
+              "LightComponent must round-trip its cone angles");
+
+        loaded->SetConeAngles(0.5f, 0.1f);
+        check(loaded->GetOuterConeAngle() >= loaded->GetInnerConeAngle(),
+              "LightComponent outer cone must never be smaller than the inner cone");
+
+        loaded->SetRange(0.0f);
+        check(loaded->GetRange() > 0.0f,
+              "LightComponent range must stay positive");
+    }
+
     void testSimpleColorMaterial()
     {
         const auto material = Material::SimpleColor(
@@ -561,6 +596,7 @@ int main()
     testJoltSphereCollisions();
     testSceneJoltSphereCollisions();
     testAnimatorAssetReferences();
+    testLightComponentRoundTrip();
     testSimpleColorMaterial();
     testAssetReferenceCacheKeys();
     testTriggerZone();