ui_node_item.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 "../ui_nodes.h"
#include "../ui_parse.h"
#include "../ui_behaviour.h"
#include "ui_node_model.h"
#include "ui_node_item.h"
#include "ui_node_container.h"
#include "ui_node_abstractnode.h"
 
#include "../../../common/scripts_lua.h"
 
#include "../../cgame/cl_game.h"
#include "../../renderer/r_draw.h"
 
#define EXTRADATA(node) UI_EXTRADATA(node, modelExtraData_t)

void uiItemNode::draw (uiNode_t* node)
{
    const objDef_t* od;
    const char* ref = UI_GetReferenceString(node, EXTRADATA(node).model);
    vec2_t pos;
 
    if (Q_strnull(ref))
        return;
 
    UI_GetNodeAbsPos(node, pos);
    R_CleanupDepthBuffer(pos[0], pos[1], node->box.size[0], node->box.size[1]);
 
    od = INVSH_GetItemByIDSilent(ref);
    if (od) {
        Item item(od, nullptr, 1); /* 1 so it's not reddish; fake item anyway */
        const char* model = GAME_GetModelForItem(item.def(), nullptr);
 
        if (EXTRADATA(node).containerLike || Q_strnull(model)) {
            const vec4_t color = {1, 1, 1, 1};
            vec3_t itemNodePos;
            /* We position the model of the item ourself (in the middle of the item
             * node). See the "-1, -1" parameter of UI_DrawItem. */
            UI_GetNodeAbsPos(node, itemNodePos);
            itemNodePos[0] += node->box.size[0] / 2.0;
            itemNodePos[1] += node->box.size[1] / 2.0;
            itemNodePos[2] = 0;
            UI_DrawItem(node, itemNodePos, &item, -1, -1, EXTRADATA(node).scale, color);
        } else {
            UI_DrawModelNode(node, model);
        }
    } else {
        GAME_DisplayItemInfo(node, ref);
    }
}
 
void UI_RegisterItemNode (uiBehaviour_t* behaviour)
{
    behaviour->name = "item";
    behaviour->extends = "model";
    behaviour->manager = UINodePtr(new uiItemNode());
    behaviour->lua_SWIG_typeinfo = UI_SWIG_TypeQuery("uiItemNode_t *");
 
    /* Display an item like a container node do it */
    UI_RegisterExtradataNodeProperty(behaviour, "containerlike", V_BOOL, modelExtraData_t, containerLike);
}