Made AmmunitionHUD into TextFieldReader which reads any component field on a parent and updates a Text component with the value!

src/Game/Systems/TextFieldReader.cpp

@@ -0,0 +1,46 @@
+#include "Game/Systems/TextFieldReader.h"
+
+void TextFieldReader::UpdateComponent(EntityWrapper& entity, ComponentWrapper& cAmmunitionHUD, double dt)
+{
+    if (!entity.HasComponent("Text")) {
+        return;
+    }
+
+    // Find the entity to read from
+    const std::string& parentEntityName = cAmmunitionHUD["ParentEntityName"];
+    EntityWrapper readEntity = entity;
+    if (!parentEntityName.empty()) {
+        readEntity = entity.FirstParentByName(parentEntityName);
+        if (!readEntity.Valid()) {
+            return;
+        }
+    }
+
+    // Find the component to read from
+    const std::string& componentType = cAmmunitionHUD["ComponentType"];
+    if (componentType.empty() || !readEntity.HasComponent(componentType)) {
+        return;
+    }
+    ComponentWrapper component = readEntity[componentType];
+
+    // Find the field to read from
+    const std::string& fieldName = cAmmunitionHUD["Field"];
+    if (fieldName.empty() || component.Info.Fields.count(fieldName) == 0) {
+        return;
+    }
+    const ComponentInfo::Field_t& field = component.Info.Fields.at(fieldName);
+
+    std::string& text = entity["Text"]["Content"];
+
+    if (field.Type == "int") {
+        text = boost::lexical_cast<std::string>((const int&)component[fieldName]);
+    } else if (field.Type == "float") {
+        text = boost::lexical_cast<std::string>((const float&)component[fieldName]);
+    } else if (field.Type == "double") {
+        text = boost::lexical_cast<std::string>((const double&)component[fieldName]);
+    } else if (field.Type == "bool") {
+        text = boost::lexical_cast<std::string>((const bool&)component[fieldName]);
+    } else if (field.Type == "string") {
+        text = (const std::string&)component[fieldName];
+    }
+}