fix another camera init bug

data/test_scene.json

@@ -6,8 +6,8 @@
 			"z" : 100
 		},
 		"target" : {
-			"x" : -140,
-			"y" : 50,
+			"x" : 140,
+			"y" : 0,
 			"z" : 0
 		},
 		"world_up" : {

src/camera.cpp

@@ -25,7 +25,9 @@ cameraInitPerspective(camera& cam, glm::vec3 position, glm::vec3 target, glm::ve
 	cam.up = glm::normalize(glm::cross(cam.forward, cam.left));
 
 	cam.hAngle = glm::atan(cam.forward.x, cam.forward.y);
-	cam.vAngle = glm::atan(cam.forward.z, cam.forward.y);
+	// NOTE: using pythagoras' to get absolute value of relative axis for vAngle component
+	real32 len = glm::sqrt(glm::pow(cam.forward.y, 2) + glm::pow(cam.forward.x, 2));
+	cam.vAngle = glm::atan(cam.forward.z, len);
 
 	cam.view = glm::lookAt(cam.position, cam.position + cam.forward, cam.up);
 	cam.model = glm::mat4(1.0f);

src/scene_loader.cpp

@@ -5,6 +5,7 @@
 #include <rapidjson/document.h>
 #include <rapidjson/schema.h>
 #include <rapidjson/stringbuffer.h>
+#include <rapidjson/error/en.h>
 #include "aixlog.hpp"
 
 #include "entity.h"
@@ -181,8 +182,11 @@ parseFile(rapidjson::Document* doc, const char* data_dir, const char* file_name)
 		ret = false;
 	}
 
-	if (doc->Parse(contents).HasParseError() || !doc->IsObject()) {
+	rapidjson::ParseResult pr = doc->Parse(contents/*, rapidjson::kParseStopWhenDoneFlag*/);
+	if (!pr || !doc->IsObject()) {
 		LOG(ERROR) << "Error parrsing scene file: " << file_name << "\n";
+		LOG(ERROR) << "Error desscription: " << rapidjson::GetParseError_En(pr.Code())
+			<< " (" << pr.Offset() << ")\n";
 		ret = false;
 	}