Add dynamic snapping resolution

editor.conf.example

@@ -2,6 +2,9 @@
 # snap to pixels
 snapping = true
 
+# The resolution the nodebox snaps to (can be overriden per node)
+default_snap_res = 16
+
 # limiting stops node boxes going out of node bounds
 limiting = true
 

src/main.cpp

@@ -87,6 +87,7 @@ int main(int argc, char *argv[]) {
 		return EXIT_FAILURE;
 	}
 	conf->set("snapping", "true");
+	conf->set("default_snap_res", "16");
 	conf->set("limiting", "true");
 	conf->set("fractional_positions", "false");
 	conf->set("driver", "opengl");

src/modes/NBEditor.cpp

@@ -393,11 +393,19 @@ void CDR::update(NBEditor* editor, bool drag, rect<s32> offset)
 
 		// Call required function
 		editor->fillProperties();
+
+		int snap_res = node->snap_res;
+		if (snap_res == -1) {
+			static const int set_snap_res =
+				editor->state->settings->getInt("default_snap_res");
+			snap_res = set_snap_res;
+		}
+
 		if (actualType < CDR_XZ) {
 			if (editor->state->settings->getBool("snapping")) {
-				wpos.X = (f32)floor((wpos.X + 0.5) * 16 + 0.5) / 16 - 0.5;
+				wpos.X = (f32)floor((wpos.X + 0.5) * snap_res + 0.5) / snap_res - 0.5;
-				wpos.Y = (f32)floor((wpos.Y + 0.5) * 16 + 0.5) / 16 - 0.5;
+				wpos.Y = (f32)floor((wpos.Y + 0.5) * snap_res + 0.5) / snap_res - 0.5;
-				wpos.Z = (f32)floor((wpos.Z + 0.5) * 16 + 0.5) / 16 - 0.5;
+				wpos.Z = (f32)floor((wpos.Z + 0.5) * snap_res + 0.5) / snap_res - 0.5;
 
 				// (X + 0.5)   round relative to (-0.5, -0.5, -0.5)
 				//             ie: (-0.5, -0.5, -0.5) goes to (0, 0, 0)
@@ -410,7 +418,7 @@ void CDR::update(NBEditor* editor, bool drag, rect<s32> offset)
 				editor->state->keys[KEY_LCONTROL] == EKS_DOWN);
 		} else {
 			box->move(editor->state, actualType, wpos,
-				editor->state->settings->getBool("snapping"));
+				(editor->state->settings->getBool("snapping")?snap_res:0));
 		}
 		node->remesh(box);
 

src/project/node.cpp

@@ -6,7 +6,8 @@ Node::Node(IrrlichtDevice* device, EditorState* state, unsigned int id) :
 	state(state),
 	_selected(-1),
 	_nid(id),
-	_box_count(0)
+	_box_count(0),
+	snap_res(-1)
 {
 	for (int i = 0; i < 6; i++) {
 		images[i] = NULL;

src/project/node.hpp

@@ -40,6 +40,7 @@ public:
 	vector3di position;
 	std::string name;
 	std::vector<NodeBox*> boxes;
+	int snap_res;
 private:
 	// Data
 	int _selected;

src/project/nodebox.cpp

@@ -91,7 +91,7 @@ void NodeBox::moveFace(EditorState* editor, ECDR_DIR type,
 }
 
 void NodeBox::move(EditorState* editor, ECDR_DIR type, vector3df position,
-		bool do_snap)
+		const int snap_res)
 {
 	vector3df new_one = one;
 	vector3df new_two = two;
@@ -157,11 +157,11 @@ void NodeBox::move(EditorState* editor, ECDR_DIR type, vector3df position,
 		}
 	}
 
-	if (do_snap) {
+	if (snap_res > 0) {
 		vector3df snapped_one(
-			(f32)floor((new_one.X + 0.5) * 16 + 0.5) / 16 - 0.5,
+			(f32)floor((new_one.X + 0.5) * snap_res + 0.5) / snap_res - 0.5,
-			(f32)floor((new_one.Y + 0.5) * 16 + 0.5) / 16 - 0.5,
+			(f32)floor((new_one.Y + 0.5) * snap_res + 0.5) / snap_res - 0.5,
-			(f32)floor((new_one.Z + 0.5) * 16 + 0.5) / 16 - 0.5);
+			(f32)floor((new_one.Z + 0.5) * snap_res + 0.5) / snap_res - 0.5);
 		new_two += snapped_one - new_one;
 		new_one = snapped_one;
 	}

src/project/nodebox.hpp

@@ -46,7 +46,7 @@ public:
 	void moveFace(EditorState* editor, ECDR_DIR type,
 			vector3df position, bool both);
 	void move(EditorState* editor, ECDR_DIR type, vector3df position,
-			bool do_snap=false);
+			const int snap_res=0);
 	void rotate(EAxis axis);
 	void flip(EAxis axis);