cl_game.cpp

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/*
Copyright (C) 2002-2020 UFO: Alien Invasion.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

#include "cl_game.h"
#include "../client.h"
#include "../cl_language.h"
#include "cl_game_team.h"
#include "../battlescape/cl_localentity.h"
#include "../battlescape/cl_hud.h"
#include "../battlescape/cl_parse.h"
#include "../ui/ui_main.h"
#include "../ui/ui_draw.h"
#include "../ui/ui_nodes.h"
#include "../ui/ui_popup.h"
#include "../ui/ui_render.h"
#include "../ui/ui_windows.h"
#include "../ui/ui_sprite.h"
#include "../ui/ui_font.h"
#include "../ui/ui_tooltip.h"
#include "../ui/node/ui_node_container.h"
#include "../ui/node/ui_node_messagelist.h"
#include "../ui/node/ui_node_model.h"
#include "../cl_team.h"
#include "../web/web_cgame.h"
#include "../battlescape/events/e_main.h"
#include "../cl_inventory.h"
#include "../../shared/parse.h"
#include "../../common/filesys.h"
#include "../renderer/r_draw.h"
#include "../renderer/r_framebuffer.h"
#include "../renderer/r_geoscape.h"

#include <set>
#include <string>

#define MAX_CGAMETYPES 16
static cgameType_t cgameTypes[MAX_CGAMETYPES];
static int numCGameTypes;

static inline const cgame_export_t* GAME_GetCurrentType (void)
{
    return cls.gametype;
}

class GAMECvarListener: public CvarListener
{
private:
    typedef std::set<const struct cvar_s* > GameCvars;
    GameCvars _cvars;
public:
    ~GAMECvarListener ()
    {
        _cvars.clear();
    }

    void onCreate (const struct cvar_s* cvar)
    {
        const cgame_export_t* list = GAME_GetCurrentType();
        if (list)
            _cvars.insert(cvar);
    }

    void onDelete (const struct cvar_s* cvar)
    {
        _cvars.erase(cvar);
    }

    void onGameModeChange ()
    {
        GameCvars copy = _cvars;
        for (GameCvars::const_iterator i = copy.begin(); i != copy.end(); ++i) {
            const struct cvar_s* cvar = *i;
            if (cvar->flags == 0) {
                const cgame_export_t* list = GAME_GetCurrentType();
                Com_DPrintf(DEBUG_CLIENT, "Delete cvar %s because it was created in the context of the cgame %s\n",
                        cvar->name, list ? list->name : "none");
                Cvar_Delete(cvar->name);
            }
        }
    }
};

class GAMECmdListener: public CmdListener
{
private:
    typedef std::set<const char* > GameCmds;
    GameCmds _cmds;
public:
    ~GAMECmdListener ()
    {
        _cmds.clear();
    }

    void onAdd (const char* cmdName)
    {
        const cgame_export_t* list = GAME_GetCurrentType();
        if (list) {
            _cmds.insert(cmdName);
        }
    }

    void onRemove (const char* cmdName)
    {
        _cmds.erase(cmdName);
    }

    void onGameModeChange ()
    {
        GameCmds copy = _cmds;
        for (GameCmds::const_iterator i = copy.begin(); i != copy.end(); ++i) {
            const char* cmdName = *i;
            const cgame_export_t* list = GAME_GetCurrentType();
            Com_DPrintf(DEBUG_COMMANDS, "Remove command %s because it was created in the context of the cgame %s\n",
                    cmdName, list ? list->name : "none");
            Cmd_RemoveCommand(cmdName);
        }
    }
};

static SharedPtr<GAMECvarListener> cvarListener(new GAMECvarListener());
static SharedPtr<GAMECmdListener> cmdListener(new GAMECmdListener());

/* @todo: remove me - this should be per geoscape node data */
geoscapeData_t geoscapeData;

#ifdef HARD_LINKED_CGAME
#include "campaign/cl_game_campaign.h"
#include "multiplayer/cl_game_multiplayer.h"
#include "skirmish/cl_game_skirmish.h"

static const cgame_api_t gameTypeList[] = {
    GetCGameMultiplayerAPI,
    GetCGameCampaignAPI,
    GetCGameSkirmishAPI
};

static const char* cgameMenu;

const cgame_export_t* GetCGameAPI (const cgame_import_t* import)
{
    const size_t len = lengthof(gameTypeList);

    if (cgameMenu == nullptr)
        return nullptr;

    for (int i = 0; i < len; i++) {
        const cgame_api_t list = gameTypeList[i];
        const cgame_export_t* cgame = list(import);
        if (Q_streq(cgame->menu, cgameMenu)) {
            return cgame;
        }
    }

    return nullptr;
}
#endif

static equipDef_t equipDefStandard;

static character_t characters[MAX_ACTIVETEAM];

character_t* GAME_GetCharacter (int index)
{
    if (index < 0 || index >= lengthof(characters))
        Com_Error(ERR_DROP, "Out of bounds character access");

    return &characters[index];
}

character_t* GAME_GetCharacterByUCN (int ucn)
{
    const int size = lengthof(characters);
    for (int i = 0; i < size; i++) {
        character_t* chr = &characters[i];
        if (chr->ucn == ucn)
            return chr;
    }
    return nullptr;
}

size_t GAME_GetCharacterArraySize (void)
{
    return lengthof(characters);
}

const char* GAME_GetCurrentName (void)
{
    const cgame_export_t* cgame = GAME_GetCurrentType();
    if (cgame == nullptr)
        return nullptr;
    return cgame->menu;
}
void GAME_ResetCharacters (void)
{
    for (int i = 0; i < MAX_ACTIVETEAM; i++)
        characters[i].init();
    LIST_Delete(&chrDisplayList);
    UI_ExecuteConfunc("team_membersclear");
}

void GAME_AppendTeamMember (int memberIndex, const char* teamDefID, const equipDef_t* ed)
{
    if (ed == nullptr)
        Com_Error(ERR_DROP, "No equipment definition given");

    character_t* chr = GAME_GetCharacter(memberIndex);

    CL_GenerateCharacter(chr, teamDefID);

    const objDef_t* weapon = chr->teamDef->onlyWeapon;
    if (chr->teamDef->robot && !weapon) {
        /* This is likely an UGV, try to guess which one and get the weapon */
        const char* ugvId = strstr(chr->teamDef->id, "ugv");
        const ugv_t* ugv = Com_GetUGVByIDSilent(ugvId);
        if (ugv)
            weapon = INVSH_GetItemByID(ugv->weapon);
    }
    /* pack equipment */
    cls.i.EquipActor(chr, ed, weapon, GAME_GetChrMaxLoad(chr));

    LIST_AddPointer(&chrDisplayList, (void*)chr);

    UI_ExecuteConfunc("team_memberadd %i \"%s\" \"%s\" %i", memberIndex, chr->name, chr->head, chr->headSkin);
}

void GAME_GenerateTeam (const char* teamDefID, const equipDef_t* ed, int teamMembers)
{
    if (teamMembers > GAME_GetCharacterArraySize())
        Com_Error(ERR_DROP, "More than the allowed amount of team members");

    if (ed == nullptr)
        Com_Error(ERR_DROP, "No equipment definition given");

    GAME_ResetCharacters();

    for (int i = 0; i < teamMembers; i++)
        GAME_AppendTeamMember(i, teamDefID, ed);
}

void GAME_ReloadMode (void)
{
    const cgame_export_t* list = GAME_GetCurrentType();
    if (list != nullptr) {
        GAME_SetMode(nullptr);
        GAME_SetMode(list);
    }
}

bool GAME_IsMultiplayer (void)
{
    const cgame_export_t* list = GAME_GetCurrentType();
    if (list != nullptr) {
        const bool isMultiplayer = list->isMultiplayer == 1;
        return isMultiplayer;
    }

    return false;
}

void GAME_EndBattlescape (void)
{
    Cvar_Set("cl_onbattlescape", "0");
    Com_Printf("Used inventory slots after battle: %i\n", cls.i.GetUsedSlots());
}

void GAME_EndRoundAnnounce (int playerNum, int team)
{
    const cgame_export_t* list = GAME_GetCurrentType();
    if (list != nullptr && list->EndRoundAnnounce)
        list->EndRoundAnnounce(playerNum, team);
}

void GAME_DisplayItemInfo (uiNode_t* node, const char* string)
{
    const cgame_export_t* list = GAME_GetCurrentType();
    if (list != nullptr && list->GetModelForItem) {
        const char* model = list->GetModelForItem(string);
        UI_DrawModelNode(node, model);
    }
}

void GAME_SetServerInfo (const char* server, const char* serverport)
{
    Q_strncpyz(cls.servername, server, sizeof(cls.servername));
    Q_strncpyz(cls.serverport, serverport, sizeof(cls.serverport));
}

static void CL_QueryMasterServer (const char* action, http_callback_t callback)
{
    HTTP_GetURL(va("%s/ufo/masterserver.php?%s", masterserver_url->string, action), callback);
}

bool GAME_HandleServerCommand (const char* command, dbuffer* msg)
{
    const cgame_export_t* list = GAME_GetCurrentType();
    if (!list || list->HandleServerCommand == nullptr)
        return false;

    return list->HandleServerCommand(command, msg);
}

void GAME_AddChatMessage (const char* format, ...)
{
    va_list argptr;
    char string[4096];

    const cgame_export_t* list = GAME_GetCurrentType();
    if (!list || list->AddChatMessage == nullptr)
        return;

    S_StartLocalSample("misc/talk", SND_VOLUME_DEFAULT);

    va_start(argptr, format);
    Q_vsnprintf(string, sizeof(string), format, argptr);
    va_end(argptr);

    list->AddChatMessage(string);
}

bool GAME_IsTeamEmpty (void)
{
    return LIST_IsEmpty(chrDisplayList);
}

static void GAME_NET_OOB_Printf (struct net_stream* s, const char* format, ...)
{
    va_list argptr;
    char string[4096];

    va_start(argptr, format);
    Q_vsnprintf(string, sizeof(string), format, argptr);
    va_end(argptr);

    NET_OOB_Printf(s, "%s", string);
}

static void GAME_NET_OOB_Printf2 (const char* format, ...)
{
    va_list argptr;
    char string[4096];

    va_start(argptr, format);
    Q_vsnprintf(string, sizeof(string), format, argptr);
    va_end(argptr);

    NET_OOB_Printf(cls.netStream, "%s", string);
}

static void GAME_UI_Popup (const char* title, const char* format, ...)
{
    va_list argptr;

    va_start(argptr, format);
    Q_vsnprintf(popupText, sizeof(popupText), format, argptr);
    va_end(argptr);

    UI_Popup(title, popupText);
}

static char* GAME_StrDup (const char* string)
{
    return Mem_PoolStrDup(string, cl_genericPool, 0);
}

static void GAME_Free (void* ptr)
{
    Mem_Free(ptr);
}

static memPool_t* GAME_CreatePool (const char* name)
{
    return Mem_CreatePool(name);
}

static void GAME_FreePool (memPool_t* pool)
{
    Mem_FreePool(pool);
}

static char* GAME_PoolStrDup (const char* in, memPool_t* pool, const int tagNum)
{
    return Mem_PoolStrDup(in, pool, tagNum);
}

static void GAME_DestroyInventory (Inventory* const inv)
{
    cls.i.destroyInventory(inv);
}

static void GAME_EquipActor (character_t* const chr, const equipDef_t* ed, const objDef_t* weapon, int maxWeight)
{
    cls.i.EquipActor(chr, ed, weapon, maxWeight);
}

static bool GAME_RemoveFromInventory (Inventory* const i, const invDef_t* container, Item* fItem)
{
    return cls.i.removeFromInventory(i, container, fItem);
}

static void GAME_WebUpload (int category, const char* filename)
{
    WEB_CGameUpload(GAME_GetCurrentName(), category, filename);
}

static void GAME_WebDelete (int category, const char* filename)
{
    WEB_CGameDelete(GAME_GetCurrentName(), category, filename);
}

static void GAME_WebDownloadFromUser (int category, const char* filename, int userId)
{
    WEB_CGameDownloadFromUser(GAME_GetCurrentName(), category, filename, userId);
}

static void GAME_WebListForUser (int category, int userId)
{
    WEB_CGameListForUser(GAME_GetCurrentName(), category, userId);
}

static void GAME_SetNextUniqueCharacterNumber (int ucn)
{
    cls.nextUniqueCharacterNumber = ucn;
}

static int GAME_GetNextUniqueCharacterNumber (void)
{
    return cls.nextUniqueCharacterNumber;
}

static void GAME_CollectItems (void* data, int won, void (*collectItem)(void*, const objDef_t*, int), void (*collectAmmo) (void* , const Item*), void (*ownitems) (const Inventory*))
{
    le_t* le = nullptr;
    while ((le = LE_GetNextInUse(le))) {
        /* Winner collects everything on the floor, and everything carried
         * by surviving actors. Loser only gets what their living team
         * members carry. */
        if (LE_IsItem(le)) {
            if (won) {
                Item* i = le->getFloorContainer();
                for ( ; i; i = i->getNext()) {
                    collectItem(data, i->def(), 1);
                    if (i->isReloadable() && i->getAmmoLeft() > 0)
                        collectAmmo(data, i);
                }
            }
        } else if (LE_IsActor(le)) {
            /* The items are already dropped to floor and are available
             * as ET_ITEM if the actor is dead; or the actor is not ours. */
            /* First of all collect armour of dead or stunned actors (if won). */
            if (won && LE_IsDead(le)) {
                Item* item = le->inv.getArmour();
                if (item)
                    collectItem(data, item->def(), 1);
            } else if (le->team == cls.team && !LE_IsDead(le)) {
                /* Finally, the living actor from our team. */
                ownitems(&le->inv);
            }
        }
    }
}

static void GAME_CollectAliens (void* data, void (*collect)(void*, const teamDef_t*, int, bool))
{
    le_t* le = nullptr;

    while ((le = LE_GetNextInUse(le))) {
        if (LE_IsActor(le) && LE_IsAlien(le)) {
            assert(le->teamDef);

            if (LE_IsStunned(le))
                collect(data, le->teamDef, 1, false);
            else if (LE_IsDead(le))
                collect(data, le->teamDef, 1, true);
        }
    }
}

static int UI_DrawString_ (const char* fontID, align_t align, int x, int y, const char* c)
{
    return UI_DrawString(fontID, align, x, y, 0, 0, 0, c);
}

static void UI_PushWindow_ (const char* name)
{
    UI_PushWindow(name);
}

static void UI_DrawNormImageByName_ (bool flip, float x, float y, float w, float h, float sh, float th, float sl, float tl, const char* name)
{
    UI_DrawNormImageByName(flip, x, y, w, h, sh, th, sl, tl, name);
}

static void R_UploadAlpha_ (const char* name, const byte* alphaData)
{
    image_t* image = R_GetImage(name);
    if (!image) {
        Com_Printf("Could not find image '%s'\n", name);
        return;
    }
    R_UploadAlpha(image, alphaData);
}

static void R_DrawImageCentered (int x, int y, const char* name)
{
    image_t* image = R_FindImage(name, it_pic);
    if (image)
        R_DrawImage(x - image->width / 2, y - image->height / 2, image);
}

static const char* Com_EParse_ (const char** text, const char* errhead, const char* errinfo)
{
    return Com_EParse(text, errhead, errinfo);
}

static const cgame_import_t* GAME_GetImportData (const cgameType_t* t)
{
    static cgame_import_t gameImport;
    static cgame_import_t* cgi = nullptr;

    if (cgi == nullptr) {
        cgi = &gameImport;

        cgi->ui_inventory = &ui_inventory;
        cgi->csi = &csi;

        cgi->r_xviAlpha = geoscapeData.r_xviAlpha;
        cgi->r_radarPic = geoscapeData.r_radarPic;
        cgi->r_radarSourcePic = geoscapeData.r_radarSourcePic;

        cgi->Cmd_AddCommand = Cmd_AddCommand;
        cgi->Cmd_Argc = Cmd_Argc;
        cgi->Cmd_Args = Cmd_Args;
        cgi->Cmd_Argv = Cmd_Argv;
        cgi->Cmd_ExecuteString = Cmd_ExecuteString;
        cgi->Cmd_RemoveCommand = Cmd_RemoveCommand;
        cgi->Cmd_TableAddList = Cmd_TableAddList;
        cgi->Cmd_TableRemoveList = Cmd_TableRemoveList;
        cgi->Cmd_AddParamCompleteFunction = Cmd_AddParamCompleteFunction;
        cgi->Cmd_GenericCompleteFunction = Cmd_GenericCompleteFunction;
        cgi->Com_GetMapDefinitionByID = Com_GetMapDefinitionByID;

        cgi->Cbuf_AddText = Cbuf_AddText;
        cgi->Cbuf_Execute = Cbuf_Execute;

        cgi->LIST_PrependString = LIST_PrependString;
        cgi->LIST_AddString = LIST_AddString;
        cgi->LIST_AddStringSorted = LIST_AddStringSorted;
        cgi->LIST_AddPointer = LIST_AddPointer;
        cgi->LIST_Add = LIST_Add;
        cgi->LIST_ContainsString = LIST_ContainsString;
        cgi->LIST_GetPointer = LIST_GetPointer;
        cgi->LIST_Delete = LIST_Delete;
        cgi->LIST_RemoveEntry = LIST_RemoveEntry;
        cgi->LIST_IsEmpty = LIST_IsEmpty;
        cgi->LIST_Count = LIST_Count;
        cgi->LIST_CopyStructure = LIST_CopyStructure;
        cgi->LIST_GetByIdx = LIST_GetByIdx;
        cgi->LIST_Remove = LIST_Remove;
        cgi->LIST_Sort = LIST_Sort;
        cgi->LIST_GetRandom = LIST_GetRandom;

        cgi->Cvar_Delete = Cvar_Delete;
        cgi->Cvar_Get = Cvar_Get;
        cgi->Cvar_GetInteger = Cvar_GetInteger;
        cgi->Cvar_GetValue = Cvar_GetValue;
        cgi->Cvar_VariableStringOld = Cvar_VariableStringOld;
        cgi->Cvar_Set = Cvar_Set;
        cgi->Cvar_SetValue = Cvar_SetValue;
        cgi->Cvar_GetString = Cvar_GetString;
        cgi->Cvar_ForceSet = Cvar_ForceSet;

        cgi->FS_CloseFile = FS_CloseFile;
        cgi->FS_FreeFile = FS_FreeFile;
        cgi->FS_OpenFile = FS_OpenFile;
        cgi->FS_LoadFile = FS_LoadFile;
        cgi->FS_CheckFile = FS_CheckFile;
        cgi->FS_WriteFile = FS_WriteFile;
        cgi->FS_RemoveFile = FS_RemoveFile;
        cgi->FS_Read = FS_Read;
        cgi->FS_BuildFileList = FS_BuildFileList;
        cgi->FS_NextFileFromFileList = FS_NextFileFromFileList;
        cgi->FS_NextScriptHeader = FS_NextScriptHeader;

        cgi->UI_AddOption = UI_AddOption;
        cgi->UI_ExecuteConfunc = UI_ExecuteConfunc;
        cgi->UI_InitStack = UI_InitStack;
        cgi->UI_Popup = GAME_UI_Popup;
        cgi->UI_PopupList = UI_PopupList;
        cgi->UI_PopWindow = UI_PopWindow;
        cgi->UI_PushWindow = UI_PushWindow_;
        cgi->UI_RegisterLinkedListText = UI_RegisterLinkedListText;
        cgi->UI_MessageGetStack = UI_MessageGetStack;
        cgi->UI_MessageAddStack = UI_MessageAddStack;
        cgi->UI_MessageResetStack = UI_MessageResetStack;
        cgi->UI_TextScrollEnd = UI_TextScrollEnd;
        cgi->UI_RegisterOption = UI_RegisterOption;
        cgi->UI_RegisterText = UI_RegisterText;
        cgi->UI_ResetData = UI_ResetData;
        cgi->UI_UpdateInvisOptions = UI_UpdateInvisOptions;
        cgi->UI_GetOption = UI_GetOption;
        cgi->UI_SortOptions = UI_SortOptions;
        cgi->UI_InitOptionIteratorAtIndex = UI_InitOptionIteratorAtIndex;
        cgi->UI_OptionIteratorNextOption = UI_OptionIteratorNextOption;
        cgi->UI_DrawString = UI_DrawString_;
        cgi->UI_GetFontFromNode = UI_GetFontFromNode;
        cgi->UI_DrawNormImageByName = UI_DrawNormImageByName_;
        cgi->UI_DrawRect = UI_DrawRect;
        cgi->UI_DrawFill = UI_DrawFill;
        cgi->UI_DrawTooltip = UI_DrawTooltip;
        cgi->UI_GetNodeAbsPos = UI_GetNodeAbsPos;
        cgi->UI_PopupButton = UI_PopupButton;
        cgi->UI_GetSpriteByName = UI_GetSpriteByName;
        cgi->UI_ContainerNodeUpdateEquipment = UI_ContainerNodeUpdateEquipment;
        cgi->UI_GetNodeByPath = UI_GetNodeByPath;
        cgi->UI_DisplayNotice = UI_DisplayNotice;
        cgi->UI_GetActiveWindowName = UI_GetActiveWindowName;
        cgi->UI_TextNodeSelectLine = UI_TextNodeSelectLine;

        cgi->CL_Translate = CL_Translate;

        cgi->NET_StreamSetCallback = NET_StreamSetCallback;
        cgi->NET_Connect = NET_Connect;
        cgi->NET_ReadString = NET_ReadString;
        cgi->NET_ReadStringLine = NET_ReadStringLine;
        cgi->NET_ReadByte = NET_ReadByte;
        cgi->NET_ReadShort = NET_ReadShort;
        cgi->NET_ReadLong = NET_ReadLong;
        cgi->NET_WriteByte = NET_WriteByte;
        cgi->NET_WriteShort = NET_WriteShort;
        cgi->NET_ReadMsg = NET_ReadMsg;
        cgi->NET_StreamGetData = NET_StreamGetData;
        cgi->NET_StreamSetData = NET_StreamSetData;
        cgi->NET_StreamFree = NET_StreamFree;
        cgi->NET_StreamPeerToName = NET_StreamPeerToName;
        cgi->NET_SockaddrToStrings = NET_SockaddrToStrings;
        cgi->NET_DatagramSocketNew = NET_DatagramSocketNew;
        cgi->NET_DatagramBroadcast = NET_DatagramBroadcast;
        cgi->NET_DatagramSocketClose = NET_DatagramSocketClose;
        cgi->NET_OOB_Printf = GAME_NET_OOB_Printf;
        cgi->NET_OOB_Printf2 = GAME_NET_OOB_Printf2;

        cgi->Com_ServerState = Com_ServerState;
        cgi->Com_Printf = Com_Printf;
        cgi->Com_DPrintf = Com_DPrintf;
        cgi->Com_Error = Com_Error;
        cgi->Com_DropShipTypeToShortName = Com_DropShipTypeToShortName;
        cgi->Com_UFOCrashedTypeToShortName = Com_UFOCrashedTypeToShortName;
        cgi->Com_UFOTypeToShortName = Com_UFOTypeToShortName;
        cgi->Com_GetRandomMapAssemblyNameForCraft = Com_GetRandomMapAssemblyNameForCraft;
        cgi->Com_RegisterConstList = Com_RegisterConstList;
        cgi->Com_UnregisterConstList = Com_UnregisterConstList;
        cgi->Com_GetConstVariable = Com_GetConstVariable;
        cgi->Com_GetConstIntFromNamespace = Com_GetConstIntFromNamespace;
        cgi->Com_GetConstInt = Com_GetConstInt;
        cgi->Com_EParse = Com_EParse_;
        cgi->Com_EParseValue = Com_EParseValue;
        cgi->Com_ParseBoolean = Com_ParseBoolean;
        cgi->Com_ParseList = Com_ParseList;
        cgi->Com_ParseBlock = Com_ParseBlock;
        cgi->Com_ParseBlockToken = Com_ParseBlockToken;
        cgi->Com_ValueToStr = Com_ValueToStr;
        cgi->Com_GetTeamDefinitionByID = Com_GetTeamDefinitionByID;
        cgi->Com_UFOShortNameToID = Com_UFOShortNameToID;
        cgi->Com_GetUFOIdsNum = Com_GetUfoIdsNum;
        cgi->Com_GetDropShipIdsNum = Com_GetDropShipIdsNum;
        cgi->Com_GetHumanAircraftIdsNum = Com_GetHumanAircraftIdsNum;
        cgi->Com_GetRandomMapAssemblyNameForCrashedCraft = Com_GetRandomMapAssemblyNameForCrashedCraft;
        cgi->Com_SetGameType = Com_SetGameType;
        cgi->Com_RegisterConstInt = Com_RegisterConstInt;
        cgi->Com_UnregisterConstVariable = Com_UnregisterConstVariable;
        cgi->Com_Drop = Com_Drop;
        cgi->Com_GetUGVByID = Com_GetUGVByID;
        cgi->Com_GetUGVByIDSilent = Com_GetUGVByIDSilent;
        cgi->Com_DropShipShortNameToID = Com_DropShipShortNameToID;

        cgi->SV_ShutdownWhenEmpty = SV_ShutdownWhenEmpty;
        cgi->SV_Shutdown = SV_Shutdown;

        cgi->CL_Drop = CL_Drop;
        cgi->CL_Milliseconds = CL_Milliseconds;
        cgi->CL_PlayerGetName = CL_PlayerGetName;
        cgi->CL_GetPlayerNum = CL_GetPlayerNum;
        cgi->CL_SetClientState = CL_SetClientState;
        cgi->CL_GetClientState = CL_GetClientState;
        cgi->CL_Disconnect = CL_Disconnect;
        cgi->CL_QueryMasterServer = CL_QueryMasterServer;

        cgi->GAME_SwitchCurrentSelectedMap = GAME_SwitchCurrentSelectedMap;
        cgi->GAME_GetCurrentSelectedMap = GAME_GetCurrentSelectedMap;
        cgi->GAME_GetCurrentTeam = GAME_GetCurrentTeam;
        cgi->GAME_StrDup = GAME_StrDup;
        cgi->GAME_AutoTeam = GAME_AutoTeam;
        cgi->GAME_ChangeEquip = GAME_ChangeEquip;
        cgi->GAME_GetCharacterArraySize = GAME_GetCharacterArraySize;
        cgi->GAME_IsTeamEmpty = GAME_IsTeamEmpty;
        cgi->GAME_LoadDefaultTeam = GAME_LoadDefaultTeam;
        cgi->GAME_AppendTeamMember = GAME_AppendTeamMember;
        cgi->GAME_ReloadMode = GAME_ReloadMode;
        cgi->GAME_SetServerInfo = GAME_SetServerInfo;
        cgi->GAME_GetChrMaxLoad = GAME_GetChrMaxLoad;
        cgi->GAME_LoadCharacter = GAME_LoadCharacter;
        cgi->GAME_SaveCharacter = GAME_SaveCharacter;

        cgi->Alloc = _Mem_Alloc;
        cgi->Free = GAME_Free;
        cgi->CreatePool = GAME_CreatePool;
        cgi->FreePool = GAME_FreePool;
        cgi->PoolStrDup = GAME_PoolStrDup;

        cgi->R_LoadImage = R_LoadImage;
        cgi->R_SoftenTexture = R_SoftenTexture;
        cgi->R_ImageExists = R_ImageExists;
        cgi->R_Color = R_Color;
        cgi->R_DrawLineStrip = R_DrawLineStrip;
        cgi->R_DrawLine = R_DrawLine;
        cgi->R_DrawFill = R_DrawFill;
        cgi->R_DrawRect = R_DrawRect;
        cgi->R_DrawBloom = R_DrawBloom;
        cgi->R_Draw2DMapMarkers = R_Draw2DMapMarkers;
        cgi->R_Draw3DMapMarkers = R_Draw3DMapMarkers;
        cgi->R_UploadAlpha = R_UploadAlpha_;
        cgi->R_DrawImageCentered = R_DrawImageCentered;

        cgi->S_SetSampleRepeatRate = S_SetSampleRepeatRate;
        cgi->S_StartLocalSample = S_StartLocalSample;

        cgi->CL_GenerateCharacter = CL_GenerateCharacter;
        cgi->CL_OnBattlescape = CL_OnBattlescape;

        cgi->CL_ActorGetSkillString = CL_ActorGetSkillString;
        cgi->CL_UpdateCharacterValues = CL_UpdateCharacterValues;

        cgi->SetNextUniqueCharacterNumber = GAME_SetNextUniqueCharacterNumber;
        cgi->GetNextUniqueCharacterNumber = GAME_GetNextUniqueCharacterNumber;

        cgi->CollectItems = GAME_CollectItems;
        cgi->CollectAliens = GAME_CollectAliens;

        cgi->INV_GetEquipmentDefinitionByID = INV_GetEquipmentDefinitionByID;
        cgi->INV_DestroyInventory = GAME_DestroyInventory;
        cgi->INV_EquipActor = GAME_EquipActor;
        cgi->INV_RemoveFromInventory = GAME_RemoveFromInventory;

        cgi->INV_ItemDescription = INV_ItemDescription;
        cgi->INV_ItemMatchesFilter = INV_ItemMatchesFilter;
        cgi->INV_GetFilterType = INV_GetFilterType;
        cgi->INV_GetFilterTypeID = INV_GetFilterTypeID;

        cgi->WEB_Upload = GAME_WebUpload;
        cgi->WEB_Delete = GAME_WebDelete;
        cgi->WEB_DownloadFromUser = GAME_WebDownloadFromUser;
        cgi->WEB_ListForUser = GAME_WebListForUser;

        cgi->GetRelativeSavePath = GAME_GetRelativeSavePath;
        cgi->GetAbsoluteSavePath = GAME_GetAbsoluteSavePath;

        cgi->BEP_Evaluate = BEP_Evaluate;

        cgi->Sys_Error = Sys_Error;

        cgi->HUD_InitUI = HUD_InitUI;
        cgi->HUD_DisplayMessage = HUD_DisplayMessage;

        cgi->XML_AddBool = XML_AddBool;
        cgi->XML_AddBoolValue = XML_AddBoolValue;
        cgi->XML_AddByte = XML_AddByte;
        cgi->XML_AddByteValue = XML_AddByteValue;
        cgi->XML_AddDate = XML_AddDate;
        cgi->XML_AddDouble = XML_AddDouble;
        cgi->XML_AddDoubleValue = XML_AddDoubleValue;
        cgi->XML_AddFloat = XML_AddFloat;
        cgi->XML_AddFloatValue = XML_AddFloatValue;
        cgi->XML_AddInt = XML_AddInt;
        cgi->XML_AddIntValue = XML_AddIntValue;
        cgi->XML_AddLong = XML_AddLong;
        cgi->XML_AddLongValue = XML_AddLongValue;
        cgi->XML_AddNode = XML_AddNode;
        cgi->XML_AddPos2 = XML_AddPos2;
        cgi->XML_AddPos3 = XML_AddPos3;
        cgi->XML_AddShort = XML_AddShort;
        cgi->XML_AddShortValue = XML_AddShortValue;
        cgi->XML_AddString = XML_AddString;
        cgi->XML_AddStringValue = XML_AddStringValue;

        cgi->XML_GetBool = XML_GetBool;
        cgi->XML_GetInt = XML_GetInt;
        cgi->XML_GetShort = XML_GetShort;
        cgi->XML_GetLong = XML_GetLong;
        cgi->XML_GetString = XML_GetString;
        cgi->XML_GetFloat = XML_GetFloat;
        cgi->XML_GetDouble = XML_GetDouble;
        cgi->XML_Parse = XML_Parse;
        cgi->XML_GetPos2 = XML_GetPos2;
        cgi->XML_GetNextPos2 = XML_GetNextPos2;
        cgi->XML_GetPos3 = XML_GetPos3;
        cgi->XML_GetNextPos3 = XML_GetNextPos3;
        cgi->XML_GetDate = XML_GetDate;
        cgi->XML_GetNode = XML_GetNode;
        cgi->XML_GetNextNode = XML_GetNextNode;
    }

    cgi->cgameType = t;

    return cgi;
}

static const int TAG_INVENTORY = 17462;

static void GAME_FreeInventory (void* data)
{
    Mem_Free(data);
}

static void* GAME_AllocInventoryMemory (size_t size)
{
    return Mem_PoolAlloc(size, cl_genericPool, TAG_INVENTORY);
}


static void GAME_FreeAllInventory (void)
{
    Mem_FreeTag(cl_genericPool, TAG_INVENTORY);
}

static const inventoryImport_t inventoryImport = { GAME_FreeInventory, GAME_FreeAllInventory, GAME_AllocInventoryMemory };

void GAME_UnloadGame (void)
{
#ifndef HARD_LINKED_CGAME
    if (cls.cgameLibrary) {
        GAME_SetMode(nullptr);
        Com_Printf("Unload the cgame library\n");
        SDL_UnloadObject(cls.cgameLibrary);
        cls.cgameLibrary = nullptr;
    }
#endif
}

void GAME_SwitchCurrentSelectedMap (int step)
{
    cls.currentSelectedMap += step;

    if (cls.currentSelectedMap < 0)
        cls.currentSelectedMap = csi.numMDs - 1;
    cls.currentSelectedMap %= csi.numMDs;
}

const mapDef_t* GAME_GetCurrentSelectedMap (void)
{
    return Com_GetMapDefByIDX(cls.currentSelectedMap);
}

int GAME_GetCurrentTeam (void)
{
    return cls.team;
}

void GAME_DrawMap (geoscapeData_t* data)
{
    const cgame_export_t* list = GAME_GetCurrentType();
    if (list && list->MapDraw)
        list->MapDraw(data);
}

void GAME_DrawMapMarkers (uiNode_t* node)
{
    const cgame_export_t* list = GAME_GetCurrentType();
    if (list && list->MapDrawMarkers)
        list->MapDrawMarkers(node);
}

void GAME_MapClick (uiNode_t* node, int x, int y, const vec2_t pos)
{
    const cgame_export_t* list = GAME_GetCurrentType();
    if (list && list->MapClick)
        list->MapClick(node, x, y, pos);
}

void GAME_SetMode (const cgame_export_t* gametype)
{
    const cgame_export_t* list;

    if (cls.gametype == gametype)
        return;

    GAME_ResetCharacters();
    LIST_Delete(&cl.chrList);
    Cvar_FullSet("gamemode", "", CVAR_NOSET);

    list = GAME_GetCurrentType();
    if (list) {
        Com_Printf("Shutdown gametype '%s'\n", list->name);
        list->Shutdown();
        cvarListener->onGameModeChange();
        cmdListener->onGameModeChange();

        /* we dont need to go back to "main" stack if we are already on this stack */
        if (!UI_IsWindowOnStack("main"))
            UI_InitStack("main", "");
    }

    cls.gametype = gametype;

    CL_Disconnect();

    list = GAME_GetCurrentType();
    if (list) {
        Com_Printf("Change gametype to '%s'\n", list->name);
        /* inventory structure switched/initialized */
        cls.i.destroyInventoryInterface();
        cls.i.initInventory(list->name, &csi, &inventoryImport);
        list->Init();
        Cvar_FullSet("gamemode", list->menu, CVAR_NOSET);
    }
}

static void UI_MapInfoGetNext (int step)
{
    int ref = cls.currentSelectedMap;

    for (;;) {
        cls.currentSelectedMap += step;
        if (cls.currentSelectedMap < 0)
            cls.currentSelectedMap = csi.numMDs - 1;
        cls.currentSelectedMap %= csi.numMDs;

        const mapDef_t* md = Com_GetMapDefByIDX(cls.currentSelectedMap);

        /* avoid infinite loop */
        if (ref == cls.currentSelectedMap)
            break;
        /* special purpose maps are not startable without the specific context */
        if (md->mapTheme[0] == '.')
            continue;

        if (md->mapTheme[0] != '+' && FS_CheckFile("maps/%s.bsp", md->mapTheme) != -1)
            break;
        if (md->mapTheme[0] == '+' && FS_CheckFile("maps/%s.ump", md->mapTheme + 1) != -1)
            break;
    }
}

static void UI_MapInfo (int step)
{
    const cgame_export_t* list = GAME_GetCurrentType();

    if (!list)
        return;

    if (!csi.numMDs)
        return;

    UI_MapInfoGetNext(step);

    const mapDef_t* md = list->MapInfo(step);
    if (!md)
        return;

    const char* mapname = md->mapTheme;
    /* skip random map char. */
    Cvar_Set("mn_svmapid", "%s", md->id);
    if (mapname[0] == '+') {
        Cvar_Set("mn_svmapname", "%s %s", md->mapTheme, md->params ? (const char*)LIST_GetRandom(md->params) : "");
        mapname++;
    } else {
        Cvar_Set("mn_svmapname", "%s", md->mapTheme);
    }

    if (R_ImageExists("pics/maps/shots/%s", mapname))
        Cvar_Set("mn_mappic", "maps/shots/%s", mapname);
    else
        Cvar_Set("mn_mappic", "maps/shots/default");

    if (R_ImageExists("pics/maps/shots/%s_2", mapname))
        Cvar_Set("mn_mappic2", "maps/shots/%s_2", mapname);
    else
        Cvar_Set("mn_mappic2", "maps/shots/default");

    if (R_ImageExists("pics/maps/shots/%s_3", mapname))
        Cvar_Set("mn_mappic3", "maps/shots/%s_3", mapname);
    else
        Cvar_Set("mn_mappic3", "maps/shots/default");
}

static void UI_RequestMapList_f (void)
{
    if (Cmd_Argc() != 2) {
        Com_Printf("Usage: %s <callback>\n", Cmd_Argv(0));
        return;
    }

    if (!csi.numMDs)
        return;

    const char* callbackCmd = Cmd_Argv(1);

    Cbuf_AddText("%s begin\n", callbackCmd);

    const mapDef_t* md;
    const bool multiplayer = GAME_IsMultiplayer();
    MapDef_ForeachCondition(md, multiplayer ? md->multiplayer : md->singleplayer) {
        const char* preview;

        /* special purpose maps are not startable without the specific context */
        if (md->mapTheme[0] == '.')
            continue;

        /* do we have the map file? */
        if (md->mapTheme[0] != '+' && FS_CheckFile("maps/%s.bsp", md->mapTheme) == -1)
            continue;
        if (md->mapTheme[0] == '+' && FS_CheckFile("maps/%s.ump", md->mapTheme + 1) == -1)
            continue;

        preview = md->mapTheme;
        if (preview[0] == '+')
            preview++;
        if (!R_ImageExists("pics/maps/shots/%s", preview))
            preview = "default";

        Cbuf_AddText("%s add \"%s\" \"%s\"\n", callbackCmd, md->id, preview);
    }
    Cbuf_AddText("%s end\n", callbackCmd);
}

static void UI_GetMaps_f (void)
{
    UI_MapInfo(0);
}

static void UI_NextMap_f (void)
{
    UI_MapInfo(1);
}

static void UI_PreviousMap_f (void)
{
    UI_MapInfo(-1);
}

static void UI_SelectMap_f (void)
{
    if (Cmd_Argc() != 2) {
        Com_Printf("Usage: %s <mapname>\n", Cmd_Argv(0));
        return;
    }

    if (!csi.numMDs)
        return;

    const char* mapname = Cmd_Argv(1);
    int i = 0;
    const mapDef_t* md;

    MapDef_Foreach(md) {
        i++;
        if (!Q_streq(md->mapTheme, mapname))
            continue;
        cls.currentSelectedMap = i - 1;
        UI_MapInfo(0);
        return;
    }

    i = 0;
    MapDef_Foreach(md) {
        i++;
        if (!Q_streq(md->id, mapname))
            continue;
        cls.currentSelectedMap = i - 1;
        UI_MapInfo(0);
        return;
    }

    Com_Printf("Could not find map %s\n", mapname);
}

static const value_t cgame_vals[] = {
    {"window", V_STRING, offsetof(cgameType_t, window), 0},
    {"name", V_STRING, offsetof(cgameType_t, name), 0},
    {"equipments", V_LIST, offsetof(cgameType_t, equipmentList), 0},

    {nullptr, V_NULL, 0, 0}
};

void GAME_ParseModes (const char* name, const char** text)
{
    int i;

    /* search for equipments with same name */
    for (i = 0; i < numCGameTypes; i++)
        if (Q_streq(name, cgameTypes[i].id))
            break;

    if (i < numCGameTypes) {
        Com_Printf("GAME_ParseModes: cgame def \"%s\" with same name found, second ignored\n", name);
        return;
    }

    if (i >= MAX_CGAMETYPES)
        Sys_Error("GAME_ParseModes: MAX_CGAMETYPES exceeded");

    /* initialize the equipment definition */
    cgameType_t* cgame = &cgameTypes[numCGameTypes++];
    OBJZERO(*cgame);

    Q_strncpyz(cgame->id, name, sizeof(cgame->id));

    Com_ParseBlock(name, text, cgame, cgame_vals, nullptr);
}

#ifndef HARD_LINKED_CGAME
static bool GAME_LoadGame (const char* path, const char* name)
{
    char fullPath[MAX_OSPATH];

    Com_sprintf(fullPath, sizeof(fullPath), "%s/cgame-%s_" CPUSTRING ".%s", path, name, SO_EXT);
    cls.cgameLibrary = SDL_LoadObject(fullPath);
    if (!cls.cgameLibrary) {
        Com_sprintf(fullPath, sizeof(fullPath), "%s/cgame-%s.%s", path, name, SO_EXT);
        cls.cgameLibrary = SDL_LoadObject(fullPath);
    }

    if (cls.cgameLibrary) {
        Com_Printf("found at '%s'\n", path);
        return true;
    } else {
        Com_Printf("not found at '%s'\n", path);
        Com_DPrintf(DEBUG_SYSTEM, "%s\n", SDL_GetError());
        return false;
    }
}
#endif

static const cgame_export_t* GAME_GetCGameAPI (const cgameType_t* t)
{
    const char* name = t->id;
#ifndef HARD_LINKED_CGAME
    if (cls.cgameLibrary)
        Com_Error(ERR_FATAL, "GAME_GetCGameAPI without GAME_UnloadGame");

    Com_Printf("------- Loading cgame-%s.%s -------\n", name, SO_EXT);

#ifdef PKGLIBDIR
    GAME_LoadGame(PKGLIBDIR, name);
#endif

    /* now run through the search paths */
    const char* path = nullptr;
    while (!cls.cgameLibrary) {
        path = FS_NextPath(path);
        if (!path)
            /* couldn't find one anywhere */
            return nullptr;
        else if (GAME_LoadGame(path, name))
            break;
    }

    cgame_api_t GetCGameAPI = (cgame_api_t)(uintptr_t)SDL_LoadFunction(cls.cgameLibrary, "GetCGameAPI");
    if (!GetCGameAPI) {
        GAME_UnloadGame();
        return nullptr;
    }
#endif

    /* sanity checks */
    if (!LIST_IsEmpty(t->equipmentList)) {
        LIST_Foreach(t->equipmentList, char const, equipID) {
            if (INV_GetEquipmentDefinitionByID(equipID) == nullptr)
                Sys_Error("Could not find the equipDef '%s' in the cgame mode: '%s'", equipID, name);
        }
    }

    return GetCGameAPI(GAME_GetImportData(t));
}

static const cgame_export_t* GAME_GetCGameAPI_ (const cgameType_t* t)
{
#ifdef HARD_LINKED_CGAME
    cgameMenu = t->window;
#endif
    return GAME_GetCGameAPI(t);
}

static void GAME_SetMode_f (void)
{
    const char* modeName;
    if (Cmd_Argc() == 2)
        modeName = Cmd_Argv(1);
    else
        modeName = UI_GetActiveWindowName();

    if (modeName[0] == '\0')
        return;

    for (int i = 0; i < numCGameTypes; i++) {
        cgameType_t* t = &cgameTypes[i];
        if (Q_streq(t->window, modeName)) {
            const cgame_export_t* gametype;
            GAME_UnloadGame();

            gametype = GAME_GetCGameAPI_(t);
            GAME_SetMode(gametype);

            return;
        }
    }
    Com_Printf("GAME_SetMode_f: Mode '%s' not found\n", modeName);
}

bool GAME_ItemIsUseable (const objDef_t* od)
{
    const cgame_export_t* list = GAME_GetCurrentType();

    if (od->isArmour()) {
        const char* teamDefID = GAME_GetTeamDef();
        const teamDef_t* teamDef = Com_GetTeamDefinitionByID(teamDefID);

        /* Don't allow armour for other teams */
        if (teamDef != nullptr && !CHRSH_IsArmourUseableForTeam(od, teamDef))
            return false;
    }

    if (list && list->IsItemUseable)
        return list->IsItemUseable(od);

    return true;
}

void GAME_HandleResults (dbuffer* msg, int winner, int* numSpawned, int* numAlive, int numKilled[][MAX_TEAMS], int numStunned[][MAX_TEAMS], bool nextmap)
{
    const cgame_export_t* list = GAME_GetCurrentType();
    if (list)
        list->Results(msg, winner, numSpawned, numAlive, numKilled, numStunned, nextmap);
    else
        CL_Drop();
}

static void GAME_NetSendItem (dbuffer* buf, const Item* item, containerIndex_t container, int x, int y)
{
    const int ammoIdx = item->ammoDef() ? item->ammoDef()->idx : NONE;
    const eventRegister_t* eventData = CL_GetEvent(EV_INV_TRANSFER);
    assert(item->def());
    Com_DPrintf(DEBUG_CLIENT, "GAME_NetSendItem: Add item %s to container %i (t=%i:a=%i:m=%i) (x=%i:y=%i)\n",
        item->def()->id, container, item->def()->idx, item->getAmmoLeft(), ammoIdx, x, y);
    NET_WriteFormat(buf, eventData->formatString, item->def()->idx, item->getAmmoLeft(), ammoIdx, container, x, y, item->rotated, item->getAmount());
}

static void GAME_NetSendInventory (dbuffer* buf, const Inventory* inv)
{
    const int nr = inv->countItems();

    NET_WriteShort(buf, nr);

    for (containerIndex_t container = 0; container < CID_MAX; container++) {
        if (INVDEF(container)->temp)
            continue;
        const Item* ic;
        for (ic = inv->getContainer2(container); ic; ic = ic->getNext()) {
            GAME_NetSendItem(buf, ic, container, ic->getX(), ic->getY());
        }
    }
}

static void GAME_NetSendCharacter (dbuffer* buf, const character_t* chr)
{
    if (!chr)
        Com_Error(ERR_DROP, "No character given");
    if (chr->fieldSize != ACTOR_SIZE_2x2 && chr->fieldSize != ACTOR_SIZE_NORMAL)
        Com_Error(ERR_DROP, "Invalid character size given for character '%s': %i",
                chr->name, chr->fieldSize);
    if (chr->teamDef == nullptr)
        Com_Error(ERR_DROP, "Character with no teamdef set (%s)", chr->name);

    NET_WriteByte(buf, chr->fieldSize);
    NET_WriteShort(buf, chr->ucn);
    NET_WriteString(buf, chr->name);

    /* model */
    NET_WriteString(buf, chr->path);
    NET_WriteString(buf, chr->body);
    NET_WriteString(buf, chr->head);
    NET_WriteByte(buf, chr->bodySkin);
    NET_WriteByte(buf, chr->headSkin);

    NET_WriteShort(buf, chr->HP);
    NET_WriteShort(buf, chr->maxHP);
    NET_WriteByte(buf, chr->teamDef->idx);
    NET_WriteByte(buf, chr->gender);
    NET_WriteByte(buf, chr->STUN);
    NET_WriteByte(buf, chr->morale);

    for (int j = 0; j < chr->teamDef->bodyTemplate->numBodyParts(); ++j)
        NET_WriteByte(buf, chr->wounds.treatmentLevel[j]);

    for (int j = 0; j < SKILL_NUM_TYPES + 1; j++)
        NET_WriteLong(buf, chr->score.experience[j]);
    for (int j = 0; j < SKILL_NUM_TYPES; j++)
        NET_WriteByte(buf, chr->score.skills[j]);
    for (int j = 0; j < KILLED_NUM_TYPES; j++)
        NET_WriteShort(buf, chr->score.kills[j]);
    for (int j = 0; j < KILLED_NUM_TYPES; j++)
        NET_WriteShort(buf, chr->score.stuns[j]);
    NET_WriteShort(buf, chr->score.assignedMissions);
}

static void GAME_SendCurrentTeamSpawningInfo (dbuffer* buf, linkedList_t* team)
{
    const int teamSize = LIST_Count(team);

    /* header */
    NET_WriteByte(buf, clc_teaminfo);
    NET_WriteByte(buf, teamSize);

    LIST_Foreach(team, character_t, chr) {
        Inventory* inv = &chr->inv;

        /* unlink all temp containers */
        inv->resetTempContainers();

        GAME_NetSendCharacter(buf, chr);
        GAME_NetSendInventory(buf, inv);
    }
}

const char* GAME_GetTeamDef (void)
{
    const cgame_export_t* list = GAME_GetCurrentType();

    if (list && list->GetTeamDef)
        return list->GetTeamDef();

    const char* teamDefID = Cvar_GetString("cl_teamdef");
    if (teamDefID[0] == '\0')
        teamDefID = "phalanx";
    return teamDefID;
}

static bool GAME_Spawn (linkedList_t** chrList)
{
    const size_t size = GAME_GetCharacterArraySize();

    /* If there is no active gametype we create a team with default values.
     * This is e.g. the case when someone starts a map with the map command */
    if (GAME_GetCurrentType() == nullptr || LIST_IsEmpty(chrDisplayList)) {
        const char* teamDefID = GAME_GetTeamDef();
        const equipDef_t* ed = INV_GetEquipmentDefinitionByID("multiplayer_initial");

        /* inventory structure switched/initialized */
        cls.i.destroyInventoryInterface();
        cls.i.initInventory("client", &csi, &inventoryImport);
        GAME_GenerateTeam(teamDefID, ed, size);
    }

    int count = 0;
    LIST_Foreach(chrDisplayList, character_t, chr) {
        if (count > size)
            break;
        LIST_AddPointer(chrList, (void*)chr);
    }

    return true;
}

void GAME_StartBattlescape (bool isTeamPlay)
{
    const cgame_export_t* list = GAME_GetCurrentType();

    Cvar_Set("cl_onbattlescape", "1");

    Cvar_Set("cl_maxworldlevel", "%i", cl.mapMaxLevel - 1);
    if (list != nullptr && list->StartBattlescape) {
        list->StartBattlescape(isTeamPlay);
    } else {
        HUD_InitUI("missionoptions");
        GAME_InitMissionBriefing(_(CL_GetConfigString(CS_MAPTITLE)));
    }
}

void GAME_InitMissionBriefing (const char* title)
{
    const cgame_export_t* list = GAME_GetCurrentType();

    linkedList_t* victoryConditionsMsgIDs = nullptr;
    linkedList_t* missionBriefingMsgIDs = nullptr;

    /* allow the server to add e.g. the misc_mission victory condition */
    const char* serverVictoryMsgID = CL_GetConfigString(CS_VICTORY_CONDITIONS);
    if (Q_strvalid(serverVictoryMsgID))
        LIST_AddString(&victoryConditionsMsgIDs, serverVictoryMsgID);

    UI_PushWindow("mission_briefing");

    if (list != nullptr && list->InitMissionBriefing)
        list->InitMissionBriefing(&title, &victoryConditionsMsgIDs, &missionBriefingMsgIDs);

    /* if the cgame has nothing to contribute here, we will add a default victory condition */
    if (LIST_IsEmpty(victoryConditionsMsgIDs))
        LIST_AddString(&victoryConditionsMsgIDs, "*msgid:victory_condition_default");

    /* if the cgame has nothing to contribute here, we will add a default mission briefing */
    if (LIST_IsEmpty(missionBriefingMsgIDs))
        LIST_AddString(&missionBriefingMsgIDs, "*msgid:mission_briefing_default");

    UI_RegisterLinkedListText(TEXT_MISSIONBRIEFING, missionBriefingMsgIDs);
    UI_RegisterLinkedListText(TEXT_MISSIONBRIEFING_VICTORY_CONDITIONS, victoryConditionsMsgIDs);
    UI_RegisterText(TEXT_MISSIONBRIEFING_TITLE, title);
}

static void GAME_InitializeBattlescape (linkedList_t* team)
{
    const size_t size = lengthof(cl.teamList);
    for (int i = 0; i < size; i++) {
        UI_ExecuteConfunc("huddisable %i", i);
    }

    dbuffer msg;
    const cgame_export_t* list = GAME_GetCurrentType();
    if (list && list->InitializeBattlescape) {
        list->InitializeBattlescape(&msg, team);
    } else {
        const int teamSize = LIST_Count(team);
        dbuffer* m = &msg;

        NET_WriteByte(m, clc_initactorstates);
        NET_WriteByte(m, teamSize);

        LIST_Foreach(team, character_t, chr) {
            NET_WriteShort(m, chr->ucn);
            NET_WriteShort(m, STATE_REACTION);
            NET_WriteShort(m, ACTOR_HAND_NOT_SET);
            NET_WriteShort(m, NONE);
            NET_WriteShort(m, NONE);
        }
    }
    NET_WriteMsg(cls.netStream, msg);
}

void GAME_SpawnSoldiers (void)
{
    const cgame_export_t* list = GAME_GetCurrentType();
    bool spawnStatus;

    /* this callback is responsible to set up the teamlist */
    if (list && list->Spawn)
        spawnStatus = list->Spawn(&cl.chrList);
    else
        spawnStatus = GAME_Spawn(&cl.chrList);

    Com_Printf("Used inventory slots: %i\n", cls.i.GetUsedSlots());

    if (spawnStatus && !LIST_IsEmpty(cl.chrList)) {
        /* send team info */
        dbuffer msg;
        GAME_SendCurrentTeamSpawningInfo(&msg, cl.chrList);
        NET_WriteMsg(cls.netStream, msg);
    }
}

void GAME_StartMatch (void)
{
    if (!LIST_IsEmpty(cl.chrList)) {
        dbuffer msg(12);
        NET_WriteByte(&msg, clc_stringcmd);
        NET_WriteString(&msg, NET_STATE_STARTMATCH "\n");
        NET_WriteMsg(cls.netStream, msg);

        GAME_InitializeBattlescape(cl.chrList);
    }
}

const char* GAME_GetRelativeSavePath (char* buf, size_t bufSize)
{
    Com_sprintf(buf, bufSize, "save/%s/", GAME_GetCurrentName());
    return buf;
}

const char* GAME_GetAbsoluteSavePath (char* buf, size_t bufSize)
{
    Com_sprintf(buf, bufSize, "%s/save/%s/", FS_Gamedir(), GAME_GetCurrentName());
    return buf;
}

equipDef_t* GAME_GetEquipmentDefinition (void)
{
    const cgame_export_t* list = GAME_GetCurrentType();

    if (list && list->GetEquipmentDefinition != nullptr)
        return list->GetEquipmentDefinition();
    return &equipDefStandard;
}

void GAME_NotifyEvent (event_t eventType)
{
    const cgame_export_t* list = GAME_GetCurrentType();
    if (list && list->NotifyEvent)
        list->NotifyEvent(eventType);
}

bool GAME_TeamIsKnown (const teamDef_t* teamDef)
{
    const cgame_export_t* list = GAME_GetCurrentType();

    if (!teamDef)
        return false;

    if (list && list->IsTeamKnown != nullptr)
        return list->IsTeamKnown(teamDef);
    return true;
}

void GAME_CharacterCvars (const character_t* chr)
{
    const cgame_export_t* list = GAME_GetCurrentType();
    if (list && list->UpdateCharacterValues != nullptr)
        list->UpdateCharacterValues(chr);
}

static void GAME_Abort_f (void)
{
    /* aborting means letting the aliens win */
    Cbuf_AddText("sv win %i\n", TEAM_ALIEN);
}

void GAME_Drop (void)
{
    const cgame_export_t* list = GAME_GetCurrentType();

    if (list && list->Drop) {
        list->Drop();
    } else {
        SV_Shutdown("Drop", false);
        GAME_SetMode(nullptr);

        GAME_UnloadGame();

        UI_InitStack("main", nullptr);
    }
}

static void GAME_Exit_f (void)
{
    GAME_SetMode(nullptr);

    GAME_UnloadGame();
}

void GAME_Frame (void)
{
    /* don't run the cgame in console mode */
    if (cls.keyDest == key_console)
        return;

    const cgame_export_t* list = GAME_GetCurrentType();
    if (list && list->RunFrame != nullptr)
        list->RunFrame(cls.frametime);
}


void GAME_DrawBaseLayout (int baseIdx, int x, int y, int totalMarge, int w, int h, int padding, const vec4_t bgcolor, const vec4_t color)
{
    const cgame_export_t* list = GAME_GetCurrentType();
    if (list && list->DrawBaseLayout != nullptr)
        list->DrawBaseLayout(baseIdx, x, y, totalMarge, w, h, padding, bgcolor, color);
}

void GAME_DrawBaseLayoutTooltip (int baseIdx, int x, int y)
{
    const cgame_export_t* list = GAME_GetCurrentType();
    if (list && list->DrawBaseLayoutTooltip != nullptr)
        list->DrawBaseLayoutTooltip(baseIdx, x, y);
}

const char* GAME_GetModelForItem (const objDef_t* od, uiModel_t** uiModel)
{
    const cgame_export_t* list = GAME_GetCurrentType();
    if (list && list->GetModelForItem != nullptr) {
        const char* model = list->GetModelForItem(od->id);
        if (model != nullptr) {
            if (uiModel != nullptr)
                *uiModel = UI_GetUIModel(model);
            return model;
        }
    }

    if (uiModel != nullptr)
        *uiModel = nullptr;
    return od->model;
}

character_t* GAME_GetSelectedChr (void)
{
    const cgame_export_t* list = GAME_GetCurrentType();
    if (list && list->GetSelectedChr != nullptr)
        return list->GetSelectedChr();

    const int ucn = Cvar_GetInteger("mn_ucn");
    character_t* chr = nullptr;
    LIST_Foreach(chrDisplayList, character_t, chrTmp) {
        if (ucn == chrTmp->ucn) {
            chr = chrTmp;
            break;
        }
    }
    return chr;
}

int GAME_GetChrMaxLoad (const character_t* chr)
{
    if (chr == nullptr)
        return NONE;

    const cgame_export_t* list = GAME_GetCurrentType();
    const int strength = chr->score.skills[ABILITY_POWER];
    if (list && list->GetChrMaxLoad != nullptr)
        return std::min(strength, list->GetChrMaxLoad(chr));
    return strength;
}

const equipDef_t* GAME_ChangeEquip (const linkedList_t* equipmentList, changeEquipType_t changeType, const char* equipID)
{
    const equipDef_t* ed;

    if (LIST_IsEmpty(equipmentList)) {
        ed = INV_GetEquipmentDefinitionByID(equipID);
        if (ed == nullptr)
            Com_Error(ERR_DROP, "Could not find the equipment definition for '%s'", equipID);
        int index = ed - csi.eds;

        switch (changeType) {
        case BACKWARD:
            index--;
            if (index < 0)
                index = csi.numEDs - 1;
            break;
        case FORWARD:
            index++;
            if (index >= csi.numEDs)
                index = 0;
            break;
        default:
            break;
        }
        ed = &csi.eds[index];
    } else {
        const linkedList_t* entry = LIST_ContainsString(equipmentList, equipID);
        if (entry == nullptr) {
            equipID = (const char*)equipmentList->data;
        } else if (changeType == FORWARD) {
            equipID = (const char*)(entry->next != nullptr ? entry->next->data : equipmentList->data);
        } else if (changeType == BACKWARD) {
            const char* newEntry = nullptr;
            const char* prevEntry = nullptr;
            LIST_Foreach(equipmentList, char const, tmp) {
                if (Q_streq(tmp, equipID)) {
                    if (prevEntry != nullptr) {
                        newEntry = prevEntry;
                        break;
                    }
                }
                prevEntry = tmp;
                newEntry = tmp;
            }
            equipID = newEntry;
        }
        ed = INV_GetEquipmentDefinitionByID(equipID);
        if (ed == nullptr)
            Com_Error(ERR_DROP, "Could not find the equipment definition for '%s'", equipID);
    }

    return ed;
}

void GAME_InitUIData (void)
{
    Com_Printf("----------- game modes -------------\n");
    for (int i = 0; i < numCGameTypes; i++) {
        const cgameType_t* t = &cgameTypes[i];
        const cgame_export_t* e = GAME_GetCGameAPI_(t);
        if (e == nullptr)
            continue;

        if (e->isMultiplayer)
            UI_ExecuteConfunc("game_addmode_multiplayer \"%s\" \"%s\"", t->window, t->name);
        else
            UI_ExecuteConfunc("game_addmode_singleplayer \"%s\" \"%s\"", t->window, t->name);
        Com_Printf("added %s\n", t->name);
        GAME_UnloadGame();
    }

    Com_Printf("added %i game modes\n", numCGameTypes);
}

void GAME_InitStartup (void)
{
    Cmd_AddCommand("game_setmode", GAME_SetMode_f, "Decides with game mode should be set - takes the menu as reference");
    Cmd_AddCommand("game_exit", GAME_Exit_f, "Quits the current running game and shutdown the game mode");
    Cmd_AddCommand("game_abort", GAME_Abort_f, "Abort the game and let the aliens/opponents win");
    Cmd_AddCommand("game_autoteam", GAME_AutoTeam_f, "Assign initial equipment to soldiers");
    Cmd_AddCommand("game_toggleactor", GAME_ToggleActorForTeam_f);
    Cmd_AddCommand("game_saveteamstate", GAME_SaveTeamState_f);
    Cmd_AddCommand("game_saveteam", GAME_SaveTeam_f, "Save a team slot");
    Cmd_AddCommand("game_loadteam", GAME_LoadTeam_f, "Load a team slot");
    Cmd_AddCommand("game_teamcomments", GAME_TeamSlotComments_f, "Fills the team selection menu with the team names");
    Cmd_AddCommand("game_teamupdate", GAME_UpdateTeamMenuParameters_f, "");
    Cmd_AddCommand("game_teamdelete", GAME_TeamDelete_f, "Removes a team");
    Cmd_AddCommand("game_actorselect", GAME_ActorSelect_f, "Select an actor in the equipment menu");
    Cmd_AddCommand("mn_getmaps", UI_GetMaps_f, "The initial map to show");
    Cmd_AddCommand("mn_nextmap", UI_NextMap_f, "Switch to the next valid map for the selected gametype");
    Cmd_AddCommand("mn_prevmap", UI_PreviousMap_f, "Switch to the previous valid map for the selected gametype");
    Cmd_AddCommand("mn_selectmap", UI_SelectMap_f, "Switch to the map given by the parameter - may be invalid for the current gametype");
    Cmd_AddCommand("mn_requestmaplist", UI_RequestMapList_f, "Request to send the list of available maps for the current gametype to a command.");

    Cvar_RegisterCvarListener(cvarListener);
    Cmd_RegisterCmdListener(cmdListener);
}

void GAME_Shutdown (void)
{
    OBJZERO(cgameTypes);
    numCGameTypes = 0;
    OBJZERO(equipDefStandard);
    for (int i = 0; i < lengthof(characters); ++i)
        characters[1].init();

    Cvar_UnRegisterCvarListener(cvarListener);
    Cmd_UnRegisterCmdListener(cmdListener);
}