From c2c577756616bcd8de817f0dcb081cc1ceadda38 Mon Sep 17 00:00:00 2001
From: Riyyi <riyyi3@gmail.com>
Date: Sun, 25 Sep 2022 11:07:37 +0200
Subject: [PATCH] Component: Add ability to read TransformComponent from JSON

---
 src/inferno/component/nativescriptcomponent.h |  2 +-
 src/inferno/component/transformcomponent.cpp  | 45 +++++++++++++++++++
 src/inferno/component/transformcomponent.h    | 10 +++++
 3 files changed, 56 insertions(+), 1 deletion(-)

diff --git a/src/inferno/component/nativescriptcomponent.h b/src/inferno/component/nativescriptcomponent.h
index efa71a8..74ef6de 100644
--- a/src/inferno/component/nativescriptcomponent.h
+++ b/src/inferno/component/nativescriptcomponent.h
@@ -15,7 +15,7 @@ namespace Inferno {
 struct NativeScriptComponent {
 	NativeScript* instance { nullptr };
 
-	NativeScript* (*initialize)();
+	NativeScript* (*initialize)() { nullptr };
 
 	// Dont allow manually setting instance during construction
 	NativeScriptComponent() {}
diff --git a/src/inferno/component/transformcomponent.cpp b/src/inferno/component/transformcomponent.cpp
index 1147f91..1f12005 100644
--- a/src/inferno/component/transformcomponent.cpp
+++ b/src/inferno/component/transformcomponent.cpp
@@ -4,8 +4,53 @@
  * SPDX-License-Identifier: MIT
  */
 
+#include "ruc/format/format.h"
+#include "ruc/json/json.h"
+
 #include "inferno/component/transformcomponent.h"
 
+namespace Inferno {
+
+void fromJson(const ruc::Json& json, TransformComponent& value)
+{
+	VERIFY(json.type() == ruc::Json::Type::Object);
+
+	if (json.exists("translate")) {
+		json.at("translate").getTo(value.translate);
+	}
+	if (json.exists("rotate")) {
+		json.at("rotate").getTo(value.rotate);
+	}
+	if (json.exists("scale")) {
+		json.at("scale").getTo(value.scale);
+	}
+}
+
+} // namespace Inferno
+
+namespace glm {
+
+void toJson(ruc::Json& json, const vec3& value)
+{
+	json = ruc::Json {
+		{ value.x, value.y, value.z },
+	};
+}
+
+void fromJson(const ruc::Json& json, vec3& value)
+{
+	VERIFY(json.type() == ruc::Json::Type::Array);
+
+	auto& values = json.asArray();
+	VERIFY(values.size() == 3, "glm::vec3 expects 3 values, not {}", values.size());
+
+	value.x = values.at(0).get<float>();
+	value.y = values.at(1).get<float>();
+	value.z = values.at(2).get<float>();
+}
+
+} // namespace glm
+
 void ruc::format::Formatter<glm::vec2>::format(Builder& builder, glm::vec2 value) const
 {
 	return Formatter<std::vector<float>>::format(builder, { value.x, value.y });
diff --git a/src/inferno/component/transformcomponent.h b/src/inferno/component/transformcomponent.h
index 37d539f..5463608 100644
--- a/src/inferno/component/transformcomponent.h
+++ b/src/inferno/component/transformcomponent.h
@@ -9,6 +9,7 @@
 #include "glm/ext/matrix_float4x4.hpp" // glm::mat4
 #include "glm/ext/vector_float3.hpp"   // glm::vec3
 #include "ruc/format/format.h"
+#include "ruc/json/json.h"
 
 namespace Inferno {
 
@@ -19,8 +20,17 @@ struct TransformComponent {
 	glm::mat4 transform { 1.0f }; // Identity matrix
 };
 
+void fromJson(const ruc::Json& json, TransformComponent& value);
+
 } // namespace Inferno
 
+namespace glm {
+
+void toJson(ruc::Json& json, const vec3& value);
+void fromJson(const ruc::Json& json, vec3& value);
+
+} // namespace glm
+
 template<>
 struct ruc::format::Formatter<glm::vec2> : Formatter<std::vector<float>> {
 	void format(Builder& builder, glm::vec2 value) const;