devilution/Source/tmsg.cpp

//HEADER_GOES_HERE

#include "../types.h"

static TMsg *sgpTimedMsgHead;

int __fastcall tmsg_get(BYTE *pbMsg, DWORD dwMaxLen)
{
    int len;
    TMsg *head;

    if (!sgpTimedMsgHead)
        return 0;

    if ((int)(sgpTimedMsgHead->hdr.dwTime - GetTickCount()) >= 0)
        return 0;
    head = sgpTimedMsgHead;
    sgpTimedMsgHead = head->hdr.pNext;
    len = head->hdr.bLen;
    // BUGFIX: ignores dwMaxLen
    memcpy(pbMsg, head->body, len);
    mem_free_dbg(head);
    return len;
}

void __fastcall tmsg_add(BYTE *pbMsg, BYTE bLen)
{
    TMsg **tail;

    TMsg *msg = (TMsg *)DiabloAllocPtr(bLen + sizeof(*msg));
    msg->hdr.pNext = NULL;
    msg->hdr.dwTime = GetTickCount() + 500;
    msg->hdr.bLen = bLen;
    memcpy(msg->body, pbMsg, bLen);
    for (tail = &sgpTimedMsgHead; *tail; tail = &(*tail)->hdr.pNext) {
        ;
    }
    *tail = msg;
}

void *__cdecl tmsg_cleanup()
{
    while (sgpTimedMsgHead) {
        TMsg *next = sgpTimedMsgHead->hdr.pNext;
        TMsg *head = sgpTimedMsgHead;
        sgpTimedMsgHead = NULL;
        mem_free_dbg(head);
        sgpTimedMsgHead = next;
    }
    return sgpTimedMsgHead;
}