cl_inventory_callbacks.cpp

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/*
Copyright (C) 2002-2025 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_inventory_callbacks.h"
#include "cl_shared.h"
#include "cl_inventory.h"
#include "ui/ui_main.h"
#include "ui/ui_nodes.h"
#include "cgame/cl_game.h"
#include "ui/ui_popup.h"
 
static const objDef_t* currentDisplayedObject;
static int itemIndex;
static int fireModeIndex;

static const char* CL_WeaponSkillToName (int weaponSkill)
{
    switch (weaponSkill) {
    case SKILL_CLOSE:
        return _("Close quarters");
#if 0
    case SKILL_HEAVY:
        return _("Heavy");
#endif
    case SKILL_ASSAULT:
        return _("Assault");
    case SKILL_SNIPER:
        return _("Sniper");
    case SKILL_EXPLOSIVE:
        return _("Explosives");
    default:
        return _("Unknown weapon skill");
    }
}

void INV_ItemDescription (const objDef_t* od)
{
    static char itemText[UI_MAX_SMALLTEXTLEN];
 
    currentDisplayedObject = od;
    Cvar_Set("mn_firemodename", "%s", "");
    Cvar_Set("mn_linkname", "%s", "");
 
    if (!od) {  /* If nothing selected return */
        Cvar_Set("mn_itemname", "%s", "");
        Cvar_Set("mn_item", "%s", "");
        UI_ResetData(TEXT_ITEMDESCRIPTION);
        itemIndex = fireModeIndex = 0;
        UI_ExecuteConfunc("itemdesc_view 0 0;");
        return;
    }
 
    /* select item */
    Cvar_Set("mn_itemname", "%s", _(od->name));
    Cvar_Set("mn_item", "%s", od->id);
 
    int count = 0;
    if (GAME_ItemIsUseable(od)) {
        if (od->isAmmo()) {
            /* We display the pre/next buttons for changing weapon only if there are at least 2 researched weapons
             * we are counting the number of weapons that are usable with this ammo */
            for (int i = 0; i < od->numWeapons; i++)
                if (GAME_ItemIsUseable(od->weapons[i]))
                    count++;
            if (itemIndex >= od->numWeapons || itemIndex < 0)
                itemIndex = 0;
            if (count > 0) {
                while (!GAME_ItemIsUseable(od->weapons[itemIndex])) {
                    itemIndex++;
                    if (itemIndex >= od->numWeapons)
                        itemIndex = 0;
                }
                Cvar_ForceSet("mn_linkname", _(od->weapons[itemIndex]->name));
            }
        } else if (od->weapon) {
            /* We display the pre/next buttons for changing ammo only if there are at least 2 researched ammo
             * we are counting the number of ammo that is usable with this weapon */
            for (int i = 0; i < od->numAmmos; i++)
                if (GAME_ItemIsUseable(od->ammos[i]))
                    count++;
 
            if (itemIndex >= od->numAmmos || itemIndex < 0)
                itemIndex = 0;
 
            /* Only display ammos if at least one has been researched */
            if (count > 0) {
                /* We have a weapon that uses ammos */
                while (!GAME_ItemIsUseable(od->ammos[itemIndex])) {
                    itemIndex++;
                    if (itemIndex >= od->numAmmos)
                        itemIndex = 0;
                }
                Cvar_ForceSet("mn_linkname", _(od->ammos[itemIndex]->name));
            }
        } else {
            Cvar_ForceSet("mn_linkname", "");
        }
    }
 
    /* set description text if item has been researched or one of its ammo/weapon has been researched */
    if (count > 0 || GAME_ItemIsUseable(od)) {
        int numFiredefs = 0;
 
        *itemText = '\0';
        if (od->isArmour()) {
            Com_sprintf(itemText, sizeof(itemText), _("Size:\t%i\n"), od->size);
            Q_strcat(itemText, sizeof(itemText), _("Weight:\t%g Kg\n"), od->weight / WEIGHT_FACTOR);
            Q_strcat(itemText, sizeof(itemText), "\n");
            Q_strcat(itemText, sizeof(itemText), _("^BDamage type:\tProtection:\n"));
            for (int i = 0; i < csi.numDTs; i++) {
                const damageType_t* dt = &csi.dts[i];
                if (!dt->showInMenu)
                    continue;
                Q_strcat(itemText, sizeof(itemText), _("%s\t%i\n"), _(dt->id), od->ratings[i]);
            }
        } else if ((od->weapon && od->numAmmos) || od->isAmmo()) {
            const objDef_t* odAmmo;
 
            if (count > 0) {
                int weaponIndex;
                if (od->weapon) {
                    Com_sprintf(itemText, sizeof(itemText), _("%s weapon\n"), (od->fireTwoHanded ? _("Two-handed") : _("One-handed")));
                    if (od->ammo > 0)
                        Q_strcat(itemText, sizeof(itemText), _("Max ammo:\t%i\n"), od->ammo);
                    odAmmo = (od->numAmmos) ? od->ammos[itemIndex] : od;
                    assert(odAmmo);
                    for (weaponIndex = 0; (weaponIndex < odAmmo->numWeapons) && (odAmmo->weapons[weaponIndex] != od); weaponIndex++) {}
                } else {
                    odAmmo = od;
                    weaponIndex = itemIndex;
                }
 
                Q_strcat(itemText, sizeof(itemText), _("Weight:\t%g Kg\n"), od->weight / WEIGHT_FACTOR);
                if (GAME_ItemIsUseable(odAmmo) && odAmmo->numFiredefs[weaponIndex] > 0) {
                    numFiredefs = odAmmo->numFiredefs[weaponIndex];
 
                    /* This contains everything common for weapons and ammos */
                    /* We check if the wanted firemode to display exists. */
                    if (fireModeIndex > numFiredefs - 1)
                        fireModeIndex = 0;
                    if (fireModeIndex < 0)
                        fireModeIndex = numFiredefs - 1;
 
                    const fireDef_t* fd = &odAmmo->fd[weaponIndex][fireModeIndex];
 
                    /* We always display the name of the firemode for an ammo */
                    Cvar_Set("mn_firemodename", "%s", _(fd->name));
 
                    /* We display the characteristics of this firemode */
                    Q_strcat(itemText, sizeof(itemText), _("Skill:\t%s\n"), CL_WeaponSkillToName(fd->weaponSkill));
                    Q_strcat(itemText, sizeof(itemText), _("Damage:\t%i\n"), (int) (fd->damage[0] + fd->spldmg[0]) * fd->shots);
                    Q_strcat(itemText, sizeof(itemText), _("Time units:\t%i\n"), fd->time);
                    Q_strcat(itemText, sizeof(itemText), _("Range:\t%g\n"), fd->range / UNIT_SIZE);
                    Q_strcat(itemText, sizeof(itemText), _("Spreads:\t%g\n"), (fd->spread[0] + fd->spread[1]) / 2);
                }
            } else {
                Com_sprintf(itemText, sizeof(itemText), _("%s. No detailed info available.\n"), od->isAmmo() ? _("Ammunition") : _("Weapon"));
                Q_strcat(itemText, sizeof(itemText), _("Weight:\t%g Kg\n"), od->weight / WEIGHT_FACTOR);
            }
        } else if (od->implant) {
            //const implantDef_t* implant = INVSH_GetImplantForObjDef(od);
            /* the strengthen effect that is bound to the implant no matter whether the user triggers some action */
            itemEffect_t* effect = od->strengthenEffect;
            if (effect != nullptr) {
                Q_strcat(itemText, sizeof(itemText), _("Permanent:\t%s\n"), (effect->isPermanent ? _("Yes") : _("No")));
                Q_strcat(itemText, sizeof(itemText), _("Duration:\t%i\n"), effect->duration);
                Q_strcat(itemText, sizeof(itemText), _("Period:\t%i\n"), effect->period);
            }
            Q_strcat(itemText, sizeof(itemText), _("Price:\t%i c\n"), od->price);
        } else if (od->weapon) {
            Com_sprintf(itemText, sizeof(itemText), _("%s ammo-less weapon\n"), (od->fireTwoHanded ? _("Two-handed") : _("One-handed")));
            Q_strcat(itemText, sizeof(itemText), _("Weight:\t%g Kg\n"), od->weight / WEIGHT_FACTOR);
        } else {
            /* just an item - only primary definition */
            Com_sprintf(itemText, sizeof(itemText), _("%s auxiliary equipment\n"), (od->fireTwoHanded ? _("Two-handed") : _("One-handed")));
            Q_strcat(itemText, sizeof(itemText), _("Weight:\t%g Kg\n"), od->weight / WEIGHT_FACTOR);
            if (od->numWeapons > 0 && od->numFiredefs[0] > 0) {
                const fireDef_t* fd = &od->fd[0][0];
                Q_strcat(itemText, sizeof(itemText), _("Action:\t%s\n"), _(fd->name));
                Q_strcat(itemText, sizeof(itemText), _("Time units:\t%i\n"), fd->time);
                Q_strcat(itemText, sizeof(itemText), _("Range:\t%g\n"), fd->range / UNIT_SIZE);
            }
        }
 
        UI_RegisterText(TEXT_ITEMDESCRIPTION, itemText);
        UI_ExecuteConfunc("itemdesc_view %i %i;", count, numFiredefs);
    } else {
        Com_sprintf(itemText, sizeof(itemText), _("Unknown - not useable"));
        UI_RegisterText(TEXT_ITEMDESCRIPTION, itemText);
        UI_ExecuteConfunc("itemdesc_view 0 0;");
    }
}

static void INV_IncreaseFiremode_f (void)
{
    if (!currentDisplayedObject)
        return;
 
    fireModeIndex++;
 
    INV_ItemDescription(currentDisplayedObject);
}

static void INV_DecreaseFiremode_f (void)
{
    if (!currentDisplayedObject)
        return;
 
    fireModeIndex--;
 
    INV_ItemDescription(currentDisplayedObject);
}

static void INV_IncreaseItem_f (void)
{
    const objDef_t* od = currentDisplayedObject;
 
    if (!od)
        return;
 
    if (od->numWeapons) {
        const int current = itemIndex;
        do {
            itemIndex++;
            if (itemIndex > od->numWeapons - 1) {
                itemIndex = 0;
            }
        } while (itemIndex != current && !GAME_ItemIsUseable(od->weapons[itemIndex]));
    } else if (od->numAmmos) {
        const int current = itemIndex;
        do {
            itemIndex++;
            if (itemIndex > od->numAmmos - 1) {
                itemIndex = 0;
            }
        } while (itemIndex != current && !GAME_ItemIsUseable(od->ammos[itemIndex]));
    }
    INV_ItemDescription(od);
}

static void INV_DecreaseItem_f (void)
{
    const objDef_t* od = currentDisplayedObject;
 
    if (!od)
        return;
 
    if (od->numWeapons) {
        const int current = itemIndex;
        do {
            itemIndex--;
            if (itemIndex < 0) {
                itemIndex = od->numWeapons - 1;
            }
        } while (itemIndex != current && !GAME_ItemIsUseable(od->weapons[itemIndex]));
    } else if (od->numAmmos) {
        const int current = itemIndex;
        do {
            itemIndex--;
            if (itemIndex < 0) {
                itemIndex = od->numAmmos - 1;
            }
        } while (itemIndex != current && !GAME_ItemIsUseable(od->ammos[itemIndex]));
    }
    INV_ItemDescription(od);
}

static void INV_UpdateObject_f (void)
{
    /* check syntax */
    if (Cmd_Argc() < 3) {
        Com_Printf("Usage: %s <objectid> <confunc> [mustwechangetab]\n", Cmd_Argv(0));
        return;
    }
 
    bool changeTab = true;
    if (Cmd_Argc() == 4)
        changeTab = atoi(Cmd_Argv(3)) >= 1;
 
    const int num = atoi(Cmd_Argv(1));
    if (num < 0 || num >= csi.numODs) {
        Com_Printf("Id %i out of range 0..%i\n", num, csi.numODs);
        return;
    }
    const objDef_t* obj = INVSH_GetItemByIDX(num);
 
    /* update tab */
    if (changeTab) {
        const cvar_t* var = Cvar_FindVar("mn_equiptype");
        const int filter = INV_GetFilterFromItem(obj);
        if (var && var->integer != filter) {
            Cvar_SetValue("mn_equiptype", filter);
            UI_ExecuteConfunc("%s", Cmd_Argv(2));
        }
    }
 
    /* update item description */
    INV_ItemDescription(obj);
}

static void INV_UpdateActorLoad_f (void)
{
    if (Cmd_Argc() < 2) {
        Com_Printf("Usage: %s <callback>\n", Cmd_Argv(0));
        return;
    }
 
    const character_t* chr = GAME_GetSelectedChr();
    if (chr == nullptr)
        return;
 
    const float invWeight = chr->inv.getWeight();
    const int maxWeight = GAME_GetChrMaxLoad(chr);
    const float penalty = GET_ENCUMBRANCE_PENALTY(invWeight, maxWeight);
    const int normalTU = GET_TU(chr->score.skills[ABILITY_SPEED], 1.0f - WEIGHT_NORMAL_PENALTY);
    const int tus = GET_TU(chr->score.skills[ABILITY_SPEED], penalty);
    const int tuPenalty = tus - normalTU;
    int count = 0;
 
    const Container* cont = nullptr;
    while ((cont = chr->inv.getNextCont(cont))) {
        if (cont->def()->temp)
            continue;
        for (Item* invList = cont->_invList, *next; invList; invList = next) {
            next = invList->getNext();
            const fireDef_t* fireDef = invList->getFiredefs();
            if (fireDef == nullptr)
                continue;
            for (int i = 0; i < MAX_FIREDEFS_PER_WEAPON; i++) {
                if (fireDef[i].time <= 0)
                    continue;
                if (fireDef[i].time <= tus)
                    continue;
                if (count <= 0)
                    Com_sprintf(popupText, sizeof(popupText), _("This soldier no longer has enough TUs to use the following items:\n\n"));
                Q_strcat(popupText, sizeof(popupText), "%s: %s (%i)\n", _(invList->def()->name), _(fireDef[i].name), fireDef[i].time);
                ++count;
            }
        }
    }
 
    if ((Cmd_Argc() < 3 || atoi(Cmd_Argv(2)) == 0) && count > 0)
        UI_Popup(_("Warning"), popupText);
 
    char label[MAX_VAR];
    char tooltip[MAX_VAR];
    Com_sprintf(label, sizeof(label), "%g/%i %s %s", invWeight / WEIGHT_FACTOR, maxWeight, _("Kg"),
            (count > 0 ? _("Warning!") : ""));
    Com_sprintf(tooltip, sizeof(tooltip), "%s %i (%+i)", _("TU:"), tus, tuPenalty);
    UI_ExecuteConfunc("%s \"%s\" \"%s\" %f %i", Cmd_Argv(1), label, tooltip, WEIGHT_NORMAL_PENALTY - (1.0f - penalty), count);
}
 
void INV_InitCallbacks (void)
{
    Cmd_AddCommand("mn_increasefiremode", INV_IncreaseFiremode_f, "Increases the number of the firemode to display");
    Cmd_AddCommand("mn_decreasefiremode", INV_DecreaseFiremode_f, "Decreases the number of the firemode to display");
    Cmd_AddCommand("mn_increaseitem", INV_IncreaseItem_f, "Increases the number of the weapon or the ammo to display");
    Cmd_AddCommand("mn_decreaseitem", INV_DecreaseItem_f, "Decreases the number of the weapon or the ammo to display");
    Cmd_AddCommand("object_update", INV_UpdateObject_f, "Update the GUI with the selected item");
    Cmd_AddCommand("mn_updateactorload", INV_UpdateActorLoad_f, "Update the GUI with the selected actor inventory load");
}