prevent players from dropping and losing items

include/globals.h

@@ -91,8 +91,10 @@ typedef struct {
   uint8_t hotbar;
   uint16_t inventory_items[41];
   uint16_t craft_items[9];
+  uint16_t cursor_item;
   uint8_t inventory_count[41];
   uint8_t craft_count[9];
+  uint8_t cursor_count;
   // 0x01 - attack cooldown
   // 0x02 - has not spawned yet
   // 0x04 - sneaking

include/packets.h

@@ -32,6 +32,7 @@ int sc_setCenterChunk (int client_fd, int x, int y);
 int sc_chunkDataAndUpdateLight (int client_fd, int _x, int _z);
 int sc_keepAlive (int client_fd);
 int sc_setContainerSlot (int client_fd, int window_id, uint16_t slot, uint8_t count, uint16_t item);
+int sc_setCursorItem (int client_fd, uint16_t item, uint8_t count);
 int sc_setHeldItem (int client_fd, uint8_t slot);
 int sc_blockUpdate (int client_fd, int64_t x, int64_t y, int64_t z, uint8_t block);
 int sc_openScreen (int client_fd, uint8_t window, const char *title, uint16_t length);

include/tools.h

@@ -26,6 +26,7 @@ ssize_t writeDouble (int client_fd, double num);
 
 uint8_t readByte (int client_fd);
 uint16_t readUint16 (int client_fd);
+int16_t readInt16 (int client_fd);
 uint32_t readUint32 (int client_fd);
 uint64_t readUint64 (int client_fd);
 int64_t readInt64 (int client_fd);