packets: Fix struct packing related bugs

- sizeof(bool) is implementation defined. The server assumes it's 4 but for me it was 1 (tested with Release too) which caused some bugs
- Structs aren't guaranteed to be packed. The compiler is free to change the layout, which we wouldn't want to for the Packet structs that we deserialize on the server.

include/packets/CaptureInf.h

@@ -2,7 +2,7 @@
 
 #include "Packet.h"
 
-struct CaptureInf : Packet {
+struct PACKED CaptureInf : Packet {
     CaptureInf() : Packet() {
         this->mType = PacketType::CAPTUREINF;
         mPacketSize = sizeof(CaptureInf) - sizeof(Packet);

include/packets/ChangeStagePacket.h

@@ -2,7 +2,7 @@
 
 #include "Packet.h"
 
-struct ChangeStagePacket : Packet {
+struct PACKED ChangeStagePacket : Packet {
     ChangeStagePacket() : Packet() {
         this->mType = PacketType::CHANGESTAGE;
         mPacketSize = sizeof(ChangeStagePacket) - sizeof(Packet);

include/packets/CostumeInf.h

@@ -2,7 +2,7 @@
 
 #include "Packet.h"
 
-struct CostumeInf : Packet {
+struct PACKED CostumeInf : Packet {
     CostumeInf() : Packet() {this->mType = PacketType::COSTUMEINF;  mPacketSize = sizeof(CostumeInf) - sizeof(Packet);};
     CostumeInf(const char* body, const char* cap) : Packet() {
         this->mType = PacketType::COSTUMEINF;

include/packets/GameInf.h

@@ -3,9 +3,9 @@
 #include "Packet.h"
 #include "al/util.hpp"
 
-struct GameInf : Packet {
+struct PACKED GameInf : Packet {
     GameInf() : Packet() {this->mType = PacketType::GAMEINF; mPacketSize = sizeof(GameInf) - sizeof(Packet);};
-    bool is2D = false;
+    bool4 is2D = false;
     u8 scenarioNo = -1;
     char stageName[0x40] = {};
 

include/packets/HackCapInf.h

@@ -2,10 +2,10 @@
 
 #include "Packet.h"
 
-struct HackCapInf : Packet {
+struct PACKED HackCapInf : Packet {
     HackCapInf() : Packet() {this->mType = PacketType::HACKCAPINF; mPacketSize = sizeof(HackCapInf) - sizeof(Packet);};
     sead::Vector3f capPos;
     sead::Quatf capQuat;
-    bool isCapVisible = false;
+    bool4 isCapVisible = false;
     char capAnim[PACKBUFSIZE] = {};
 };

include/packets/InitPacket.h

@@ -2,7 +2,7 @@
 
 #include "Packet.h"
 
-struct InitPacket : Packet {
+struct PACKED InitPacket : Packet {
     InitPacket() : Packet() {this->mType = PacketType::CLIENTINIT; mPacketSize = sizeof(InitPacket) - sizeof(Packet);};
     u16 maxPlayers = 0;
 };

include/packets/Packet.h

@@ -5,6 +5,8 @@
 
 #include "nn/account.h"
 
+#include "types.h"
+
 #define PACKBUFSIZE      0x30
 #define COSTUMEBUFSIZE   0x20
 
@@ -27,7 +29,7 @@ enum PacketType : short {
 };
 
 // attribute otherwise the build log is spammed with unused warnings
-__attribute((used)) static const char *packetNames[] = {
+USED static const char *packetNames[] = {
     "Unknown",
     "Player Info",
     "Player Cap Info",
@@ -59,7 +61,7 @@ static const char *senderNames[] = {
 };
 */
 
-struct Packet {
+struct PACKED Packet {
     nn::account::Uid mUserID; // User ID of the packet owner
     PacketType mType = PacketType::UNKNOWN;
     short mPacketSize = 0; // represents packet size without size of header

include/packets/PlayerConnect.h

@@ -2,7 +2,7 @@
 
 #include "Packet.h"
 
-struct PlayerConnect : Packet {
+struct PACKED PlayerConnect : Packet {
     PlayerConnect() : Packet() {this->mType = PacketType::PLAYERCON; mPacketSize = sizeof(PlayerConnect) - sizeof(Packet);};
     ConnectionTypes conType;
     u16 maxPlayerCount;

include/packets/PlayerDC.h

@@ -2,6 +2,6 @@
 
 #include "Packet.h"
 
-struct PlayerDC : Packet {
+struct PACKED PlayerDC : Packet {
     PlayerDC() : Packet() {this->mType = PacketType::PLAYERDC; mPacketSize = sizeof(PlayerDC) - sizeof(Packet);};
 };

include/packets/PlayerInfPacket.h

@@ -4,7 +4,7 @@
 #include "al/util.hpp"
 #include "algorithms/PlayerAnims.h"
 
-struct PlayerInf : Packet {
+struct PACKED PlayerInf : Packet {
     PlayerInf() : Packet() {mType = PacketType::PLAYERINF; mPacketSize = sizeof(PlayerInf) - sizeof(Packet);};
     sead::Vector3f playerPos;
     sead::Quatf playerRot;

include/packets/ServerCommand.h

@@ -2,7 +2,7 @@
 
 #include "Packet.h"
 
-struct ServerCommand : Packet {
+struct PACKED ServerCommand : Packet {
     ServerCommand(const char *command) : Packet() {this->mType = PacketType::CMD; strcpy(srvCmd, command); mPacketSize = sizeof(ServerCommand) - sizeof(Packet);};
     char srvCmd[PACKBUFSIZE] = {};
 };

include/packets/ShineCollect.h

@@ -2,8 +2,8 @@
 
 #include "Packet.h"
 
-struct ShineCollect : Packet {
+struct PACKED ShineCollect : Packet {
     ShineCollect() : Packet() {this->mType = PacketType::SHINECOLL; mPacketSize = sizeof(ShineCollect) - sizeof(Packet);};
     int shineId = -1;
-    bool isGrand = false;
+    bool4 isGrand = false;
 };

include/packets/TagInf.h

@@ -8,10 +8,10 @@ enum TagUpdateType : u8 {
     STATE                = 1 << 1
 };
 
-struct TagInf : Packet {
+struct PACKED TagInf : Packet {
     TagInf() : Packet() { this->mType = PacketType::TAGINF; mPacketSize = sizeof(TagInf) - sizeof(Packet);};
     TagUpdateType updateType;
-    bool isIt = false;
+    bool4 isIt = false;
     u8 seconds;
     u16 minutes;
 };

include/types.h

@@ -18,6 +18,8 @@ typedef signed int          s32;
 typedef int64_t             s64;
 typedef __int128_t          s128;
 
+typedef u32                 bool4; // guaranteed to be 4 bytes, 'bool' is impl. defined
+
 typedef float               f32;
 typedef double              f64;
 
@@ -76,3 +78,6 @@ struct Rect
 	float right;
 	float top;
 };
+
+#define PACKED __attribute__((packed))
+#define USED __attribute__((used))