Port member initialization from constructor to declaration (C++11)

Using `clang-tidy`'s `modernize-use-default-member-init` check and
manual review of the changes, and some extra manual changes that
`clang-tidy` failed to do.

Also went manually through all of `core` to find occurrences that
`clang-tidy` couldn't handle, especially all initializations done
in a constructor without using initializer lists.

1 files changed, 9 insertions, 9 deletions

diff --git a/modules/gdnavigation/nav_map.h b/modules/gdnavigation/nav_map.h
index 4543f00926..d39e301511 100644
--- a/modules/gdnavigation/nav_map.h
+++ b/modules/gdnavigation/nav_map.h
@@ -48,17 +48,17 @@ class NavRegion;
 class NavMap : public NavRid {
 
 	/// Map Up
-	Vector3 up;
+	Vector3 up = Vector3(0, 1, 0);
 
 	/// To find the polygons edges the vertices are displaced in a grid where
 	/// each cell has the following cell_size.
-	real_t cell_size;
+	real_t cell_size = 0.3;
 
 	/// This value is used to detect the near edges to connect.
-	real_t edge_connection_margin;
+	real_t edge_connection_margin = 5.0;
 
-	bool regenerate_polygons;
-	bool regenerate_links;
+	bool regenerate_polygons = true;
+	bool regenerate_links = true;
 
 	std::vector<NavRegion *> regions;
 
@@ -69,7 +69,7 @@ class NavMap : public NavRid {
 	RVO::KdTree rvo;
 
 	/// Is agent array modified?
-	bool agents_dirty;
+	bool agents_dirty = false;
 
 	/// All the Agents (even the controlled one)
 	std::vector<RvoAgent *> agents;
@@ -78,13 +78,13 @@ class NavMap : public NavRid {
 	std::vector<RvoAgent *> controlled_agents;
 
 	/// Physics delta time
-	real_t deltatime;
+	real_t deltatime = 0.0;
 
 	/// Change the id each time the map is updated.
-	uint32_t map_update_id;
+	uint32_t map_update_id = 0;
 
 public:
-	NavMap();
+	NavMap() {}
 
 	void set_up(Vector3 p_up);
 	Vector3 get_up() const {