Rename NODE_INVALID to NODE_UNKNOWN

src/client/client.c

@@ -1,7 +1,6 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
-#include <arpa/inet.h>
 #include <unistd.h>
 #include <errno.h>
 #include <netdb.h>

src/client/client_node.c

@@ -40,9 +40,9 @@ static void render_wood(unused v3s32 pos, unused MapNode *node, Vertex3D *vertex
 }
 
 ClientNodeDefintion client_node_definitions[NODE_UNLOADED] = {
-	// invalid
+	// unknown
 	{
-		.tiles = TILES_SIMPLE(RESSOURCEPATH "textures/invalid.png"),
+		.tiles = TILES_SIMPLE(RESSOURCEPATH "textures/unknown.png"),
 		.visibility = NV_SOLID,
 		.render = NULL,
 	},
@@ -114,7 +114,7 @@ ClientNodeDefintion client_node_definitions[NODE_UNLOADED] = {
 
 void client_node_init()
 {
-	for (Node node = NODE_INVALID; node < NODE_UNLOADED; node++) {
+	for (Node node = NODE_UNKNOWN; node < NODE_UNLOADED; node++) {
 		ClientNodeDefintion *def = &client_node_definitions[node];
 
 		if (client_node_definitions[node].visibility != NV_NONE) {

src/map.c

@@ -147,7 +147,7 @@ bool map_deserialize_node(int fd, MapNode *node)
 		return false;
 
 	if (type >= NODE_UNLOADED)
-		type = NODE_INVALID;
+		type = NODE_UNKNOWN;
 
 	*node = map_node_create(type);
 
@@ -182,7 +182,7 @@ bool map_deserialize_block(MapBlock *block, const char *data, size_t size)
 		node.type = be32toh(node.type);
 
 		if (node.type >= NODE_UNLOADED)
-			node.type = NODE_INVALID;
+			node.type = NODE_UNKNOWN;
 
 		if (node_definitions[node.type].deserialize)
 			node_definitions[node.type].deserialize(&node);

src/node.c

@@ -3,7 +3,7 @@
 #include "util.h"
 
 NodeDefintion node_definitions[NODE_UNLOADED] = {
-	// invalid
+	// unknown
 	{
 		.solid = true,
 		.create = NULL,

src/node.h

@@ -6,7 +6,7 @@
 
 typedef enum
 {
-	NODE_INVALID,		// Used for unknown nodes received from server (caused by outdated clients)
+	NODE_UNKNOWN,		// Used for unknown nodes received from server (caused by outdated clients)
 	NODE_AIR,
 	NODE_GRASS,
 	NODE_DIRT,