]> git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - cmd.c
physics: fix and refactor unsticking
[xonotic/darkplaces.git] / cmd.c
diff --git a/cmd.c b/cmd.c
index b4bb9a58e8fb6be85006f67b84ef1217241ac8fa..3e35b336b9c3d3914385336289152e111895a95d 100644 (file)
--- a/cmd.c
+++ b/cmd.c
@@ -117,49 +117,6 @@ static void Cmd_Defer_f (cmd_state_t *cmd)
        }
 }
 
-/*
-============
-Cmd_Centerprint_f
-
-Print something to the center of the screen using SCR_Centerprint
-============
-*/
-static void Cmd_Centerprint_f (cmd_state_t *cmd)
-{
-       char msg[MAX_INPUTLINE];
-       unsigned int i, c, p;
-       c = Cmd_Argc(cmd);
-       if(c >= 2)
-       {
-               strlcpy(msg, Cmd_Argv(cmd,1), sizeof(msg));
-               for(i = 2; i < c; ++i)
-               {
-                       strlcat(msg, " ", sizeof(msg));
-                       strlcat(msg, Cmd_Argv(cmd, i), sizeof(msg));
-               }
-               c = (unsigned int)strlen(msg);
-               for(p = 0, i = 0; i < c; ++i)
-               {
-                       if(msg[i] == '\\')
-                       {
-                               if(msg[i+1] == 'n')
-                                       msg[p++] = '\n';
-                               else if(msg[i+1] == '\\')
-                                       msg[p++] = '\\';
-                               else {
-                                       msg[p++] = '\\';
-                                       msg[p++] = msg[i+1];
-                               }
-                               ++i;
-                       } else {
-                               msg[p++] = msg[i];
-                       }
-               }
-               msg[p] = '\0';
-               SCR_CenterPrint(msg);
-       }
-}
-
 /*
 =============================================================================
 
@@ -212,7 +169,8 @@ static cmd_input_t *Cbuf_NodeGet(cmd_buf_t *cbuf, cmd_input_t *existing)
 ============
 Cbuf_LinkString
 
-Copies a command string into a buffer node
+Copies a command string into a buffer node.
+The input should not be null-terminated, the output will be.
 ============
 */
 static void Cbuf_LinkString(cmd_state_t *cmd, llist_t *head, cmd_input_t *existing, const char *text, qbool leavepending, unsigned int cmdsize)
@@ -236,7 +194,7 @@ static void Cbuf_LinkString(cmd_state_t *cmd, llist_t *head, cmd_input_t *existi
        }
        cbuf->size += cmdsize;
 
-       strlcpy(&node->text[offset], text, cmdsize + 1); // always sets the last char to \0
+       dp_ustr2stp(&node->text[offset], node->length + 1, text, cmdsize);
        //Con_Printf("^5Cbuf_LinkString(): %s `^7%s^5`\n", node->pending ? "append" : "new", &node->text[offset]);
        node->pending = leavepending;
 }
@@ -309,16 +267,18 @@ void Cbuf_AddText (cmd_state_t *cmd, const char *text)
        cmd_buf_t *cbuf = cmd->cbuf;
        llist_t llist = {&llist, &llist};
 
-       Cbuf_Lock(cbuf);
-
-       if (cbuf->maxsize - cbuf->size <= l)
-               Con_Print(CON_WARN "Cbuf_AddText: overflow\n");
-       else
+       if (cbuf->size + l > cbuf->maxsize)
        {
-               // If the string terminates but the (last) line doesn't, the node will be left in the pending state (to be continued).
-               Cbuf_ParseText(cmd, &llist, (List_Is_Empty(&cbuf->start) ? NULL : List_Entry(cbuf->start.prev, cmd_input_t, list)), text, true);
-               List_Splice_Tail(&llist, &cbuf->start);
+               Con_Printf(CON_WARN "Cbuf_AddText: input too large, %luKB ought to be enough for anybody.\n", (unsigned long)(cbuf->maxsize / 1024));
+               return;
        }
+
+       Cbuf_Lock(cbuf);
+
+       // If the string terminates but the (last) line doesn't, the node will be left in the pending state (to be continued).
+       Cbuf_ParseText(cmd, &llist, (List_Is_Empty(&cbuf->start) ? NULL : List_Entry(cbuf->start.prev, cmd_input_t, list)), text, true);
+       List_Splice_Tail(&llist, &cbuf->start);
+
        Cbuf_Unlock(cbuf);
 }
 
@@ -335,19 +295,20 @@ void Cbuf_InsertText (cmd_state_t *cmd, const char *text)
        llist_t llist = {&llist, &llist};
        size_t l = strlen(text);
 
-       Cbuf_Lock(cbuf);
-
-       if (cbuf->size + l >= cbuf->maxsize)
-               Con_Print(CON_WARN "Cbuf_InsertText: overflow\n");
-       else
+       if (cbuf->size + l > cbuf->maxsize)
        {
-               // bones_was_here assertion: when prepending to the buffer it never makes sense to leave node(s) in the `pending` state,
-               // it would have been impossible to append to such text later in the old raw text buffer,
-               // and allowing it causes bugs when .cfg files lack \n at EOF (see: https://gitlab.com/xonotic/darkplaces/-/issues/378).
-               Cbuf_ParseText(cmd, &llist, (List_Is_Empty(&cbuf->start) ? NULL : List_Entry(cbuf->start.next, cmd_input_t, list)), text, false);
-               List_Splice(&llist, &cbuf->start);
+               Con_Printf(CON_WARN "Cbuf_InsertText: input too large, %luKB ought to be enough for anybody.\n", (unsigned long)(cbuf->maxsize / 1024));
+               return;
        }
 
+       Cbuf_Lock(cbuf);
+
+       // bones_was_here assertion: when prepending to the buffer it never makes sense to leave node(s) in the `pending` state,
+       // it would have been impossible to append to such text later in the old raw text buffer,
+       // and allowing it causes bugs when .cfg files lack \n at EOF (see: https://gitlab.com/xonotic/darkplaces/-/issues/378).
+       Cbuf_ParseText(cmd, &llist, (List_Is_Empty(&cbuf->start) ? NULL : List_Entry(cbuf->start.next, cmd_input_t, list)), text, false);
+       List_Splice(&llist, &cbuf->start);
+
        Cbuf_Unlock(cbuf);
 }
 
@@ -364,7 +325,7 @@ static void Cbuf_Execute_Deferred (cmd_buf_t *cbuf)
        if (host.realtime - cbuf->deferred_oldtime < 0 || host.realtime - cbuf->deferred_oldtime > 1800)
                cbuf->deferred_oldtime = host.realtime;
        eat = host.realtime - cbuf->deferred_oldtime;
-       if (eat < 1/128)
+       if (eat < 1.0/128.0)
                return;
        cbuf->deferred_oldtime = host.realtime;
 
@@ -387,12 +348,9 @@ Cbuf_Execute
 ============
 */
 extern qbool prvm_runawaycheck;
-static qbool Cmd_PreprocessString(cmd_state_t *cmd, const char *intext, char *outtext, unsigned maxoutlen, cmd_alias_t *alias );
 void Cbuf_Execute (cmd_buf_t *cbuf)
 {
        cmd_input_t *current;
-       char preprocessed[MAX_INPUTLINE];
-       char *firstchar;
        unsigned int i = 0;
 
        // LadyHavoc: making sure the tokenizebuffer doesn't get filled up by repeated crashes
@@ -414,28 +372,11 @@ void Cbuf_Execute (cmd_buf_t *cbuf)
                 */
                current->pending = false;
 
+               Cmd_PreprocessAndExecuteString(current->source, current->text, current->length, src_local, false);
                cbuf->size -= current->length;
-
-               firstchar = current->text;
-               while(*firstchar && ISWHITESPACE(*firstchar))
-                       ++firstchar;
-               if((strncmp(firstchar, "alias", 5)   || !ISWHITESPACE(firstchar[5])) &&
-                  (strncmp(firstchar, "bind", 4)    || !ISWHITESPACE(firstchar[4])) &&
-                  (strncmp(firstchar, "in_bind", 7) || !ISWHITESPACE(firstchar[7])))
-               {
-                       if(Cmd_PreprocessString(current->source, current->text, preprocessed, sizeof(preprocessed), NULL ))
-                               Cmd_ExecuteString(current->source, preprocessed, src_local, false);
-               }
-               else
-               {
-                       Cmd_ExecuteString (current->source, current->text, src_local, false);
-               }
-
                // Recycle memory so using WASD doesn't cause a malloc and free
                List_Move_Tail(&current->list, &cbuf->free);
 
-               current = NULL;
-
                if (cbuf->wait)
                {
                        /*
@@ -465,8 +406,12 @@ static void Cbuf_Frame_Input(void)
 {
        char *line;
 
-       while ((line = Sys_ConsoleInput()))
-                       Cbuf_AddText(cmd_local, line);
+       if ((line = Sys_ConsoleInput()))
+       {
+               // bones_was_here: prepending allows a loop such as `alias foo "bar; wait; foo"; foo`
+               // to be broken with an alias or unalias command
+               Cbuf_InsertText(cmd_local, line);
+       }
 }
 
 void Cbuf_Frame(cmd_buf_t *cbuf)
@@ -996,7 +941,7 @@ static void Cmd_Alias_f (cmd_state_t *cmd)
                cmd_alias_t *prev, *current;
 
                a = (cmd_alias_t *)Z_Malloc (sizeof(cmd_alias_t));
-               strlcpy (a->name, s, sizeof (a->name));
+               dp_strlcpy (a->name, s, sizeof (a->name));
                // insert it at the right alphanumeric position
                for( prev = NULL, current = cmd->userdefined->alias ; current && strcmp( current->name, a->name ) < 0 ; prev = current, current = current->next )
                        ;
@@ -1015,10 +960,10 @@ static void Cmd_Alias_f (cmd_state_t *cmd)
        for (i=2 ; i < c ; i++)
        {
                if (i != 2)
-                       strlcat (line, " ", sizeof (line));
-               strlcat (line, Cmd_Argv(cmd, i), sizeof (line));
+                       dp_strlcat (line, " ", sizeof (line));
+               dp_strlcat (line, Cmd_Argv(cmd, i), sizeof (line));
        }
-       strlcat (line, "\n", sizeof (line));
+       dp_strlcat (line, "\n", sizeof (line));
 
        alloclen = strlen (line) + 1;
        if(alloclen >= 2)
@@ -1315,12 +1260,14 @@ static const char *Cmd_GetCvarValue(cmd_state_t *cmd, const char *var, size_t va
        return varstr;
 }
 
-/*
+/**
 Cmd_PreprocessString
 
 Preprocesses strings and replaces $*, $param#, $cvar accordingly. Also strips comments.
+Returns the number of bytes written to *outtext excluding the \0 terminator.
 */
-static qbool Cmd_PreprocessString(cmd_state_t *cmd, const char *intext, char *outtext, unsigned maxoutlen, cmd_alias_t *alias ) {
+static size_t Cmd_PreprocessString(cmd_state_t *cmd, const char *intext, char *outtext, unsigned maxoutlen, cmd_alias_t *alias)
+{
        const char *in;
        size_t eat, varlen;
        unsigned outlen;
@@ -1328,7 +1275,7 @@ static qbool Cmd_PreprocessString(cmd_state_t *cmd, const char *intext, char *ou
 
        // don't crash if there's no room in the outtext buffer
        if( maxoutlen == 0 ) {
-               return false;
+               return 0;
        }
        maxoutlen--; // because of \0
 
@@ -1401,7 +1348,7 @@ static qbool Cmd_PreprocessString(cmd_state_t *cmd, const char *intext, char *ou
                                {
                                        val = Cmd_GetCvarValue(cmd, in + 1, varlen, alias);
                                        if(!val)
-                                               return false;
+                                               return 0;
                                        eat = varlen + 2;
                                }
                                else
@@ -1414,7 +1361,7 @@ static qbool Cmd_PreprocessString(cmd_state_t *cmd, const char *intext, char *ou
                                varlen = strspn(in, "#*0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-");
                                val = Cmd_GetCvarValue(cmd, in, varlen, alias);
                                if(!val)
-                                       return false;
+                                       return 0;
                                eat = varlen;
                        }
                        if(val)
@@ -1438,8 +1385,8 @@ static qbool Cmd_PreprocessString(cmd_state_t *cmd, const char *intext, char *ou
                else 
                        outtext[outlen++] = *in++;
        }
-       outtext[outlen] = 0;
-       return true;
+       outtext[outlen] = '\0';
+       return outlen;
 }
 
 /*
@@ -1466,6 +1413,26 @@ static void Cmd_ExecuteAlias (cmd_state_t *cmd, cmd_alias_t *alias)
        Cbuf_InsertText(cmd, buffer2);
 }
 
+void Cmd_PreprocessAndExecuteString(cmd_state_t *cmd, const char *text, size_t textlen, cmd_source_t src, qbool lockmutex)
+{
+       char preprocessed[MAX_INPUTLINE];
+       size_t preprocessed_len;
+       const char *firstchar;
+
+       firstchar = text;
+       while(*firstchar && ISWHITESPACE(*firstchar))
+               ++firstchar;
+       if((strncmp(firstchar, "alias", 5)   || !ISWHITESPACE(firstchar[5]))
+       && (strncmp(firstchar, "bind", 4)    || !ISWHITESPACE(firstchar[4]))
+       && (strncmp(firstchar, "in_bind", 7) || !ISWHITESPACE(firstchar[7])))
+       {
+               if((preprocessed_len = Cmd_PreprocessString(cmd, text, preprocessed, sizeof(preprocessed), NULL)))
+                       Cmd_ExecuteString(cmd, preprocessed, preprocessed_len, src, lockmutex);
+       }
+       else
+               Cmd_ExecuteString(cmd, text, textlen, src, lockmutex);
+}
+
 /*
 ========
 Cmd_List
@@ -1593,7 +1560,7 @@ static void Cmd_Apropos_f(cmd_state_t *cmd)
        Con_Printf("%i result%s\n\n", count, (count > 1) ? "s" : "");
 }
 
-static cmd_state_t *Cmd_AddInterpreter(cmd_buf_t *cbuf, cvar_state_t *cvars, int cvars_flagsmask, int cmds_flagsmask, cmd_userdefined_t *userdefined)
+static cmd_state_t *Cmd_AddInterpreter(cmd_buf_t *cbuf, cvar_state_t *cvars, unsigned cvars_flagsmask, unsigned cmds_flagsmask, cmd_userdefined_t *userdefined)
 {
        cmd_state_t *cmd = (cmd_state_t *)Mem_Alloc(tempmempool, sizeof(cmd_state_t));
        
@@ -1604,7 +1571,7 @@ static cmd_state_t *Cmd_AddInterpreter(cmd_buf_t *cbuf, cvar_state_t *cvars, int
 
        cmd->cvars = cvars;
        cmd->cvars_flagsmask = cvars_flagsmask;
-       cmd->cmd_flags = cmds_flagsmask;
+       cmd->cmd_flagsmask = cmds_flagsmask;
        cmd->userdefined = userdefined;
 
        return cmd;
@@ -1618,6 +1585,8 @@ Cmd_Init
 void Cmd_Init(void)
 {
        cmd_buf_t *cbuf;
+       unsigned cvars_flagsmask, cmds_flagsmask;
+
        cbuf_mempool = Mem_AllocPool("Command buffer", 0, NULL);
        cbuf = (cmd_buf_t *)Mem_Alloc(cbuf_mempool, sizeof(cmd_buf_t));
        cbuf->maxsize = CMDBUFSIZE;
@@ -1633,7 +1602,17 @@ void Cmd_Init(void)
        cmd_iter_all = (cmd_iter_t *)Mem_Alloc(tempmempool, sizeof(cmd_iter_t) * 3);
 
        // local console
-       cmd_iter_all[0].cmd = cmd_local = Cmd_AddInterpreter(cbuf, &cvars_all, CF_CLIENT | CF_SERVER, CF_CLIENT | CF_CLIENT_FROM_SERVER | CF_SERVER_FROM_CLIENT, &cmd_userdefined_all);
+       if (cls.state == ca_dedicated)
+       {
+               cvars_flagsmask = CF_SERVER;
+               cmds_flagsmask = CF_SERVER | CF_SERVER_FROM_CLIENT;
+       }
+       else
+       {
+               cvars_flagsmask = CF_CLIENT | CF_SERVER;
+               cmds_flagsmask = CF_CLIENT | CF_SERVER | CF_CLIENT_FROM_SERVER | CF_SERVER_FROM_CLIENT;
+       }
+       cmd_iter_all[0].cmd = cmd_local = Cmd_AddInterpreter(cbuf, &cvars_all, cvars_flagsmask, cmds_flagsmask, &cmd_userdefined_all);
        cmd_local->Handle = Cmd_CL_Callback;
 
        // server commands received from clients have no reason to access cvars, cvar expansion seems perilous.
@@ -1646,7 +1625,6 @@ void Cmd_Init(void)
 //
        // client-only commands
        Cmd_AddCommand(CF_SHARED, "wait", Cmd_Wait_f, "make script execution wait for next rendered frame");
-       Cmd_AddCommand(CF_CLIENT, "cprint", Cmd_Centerprint_f, "print something at the screen center");
 
        // maintenance commands used for upkeep of cvars and saved configs
        Cmd_AddCommand(CF_SHARED, "stuffcmds", Cmd_StuffCmds_f, "execute commandline parameters (must be present in quake.rc script)");
@@ -1773,7 +1751,7 @@ static void Cmd_TokenizeString (cmd_state_t *cmd, const char *text)
 Cmd_AddCommand
 ============
 */
-void Cmd_AddCommand(int flags, const char *cmd_name, xcommand_t function, const char *description)
+void Cmd_AddCommand(unsigned flags, const char *cmd_name, xcommand_t function, const char *description)
 {
        cmd_function_t *func;
        cmd_function_t *prev, *current;
@@ -1783,7 +1761,7 @@ void Cmd_AddCommand(int flags, const char *cmd_name, xcommand_t function, const
        for (i = 0; i < 2; i++)
        {
                cmd = cmd_iter_all[i].cmd;
-               if (flags & cmd->cmd_flags)
+               if (flags & cmd->cmd_flagsmask)
                {
                        // fail if the command is a variable name
                        if (Cvar_FindVar(cmd->cvars, cmd_name, ~0))
@@ -2120,7 +2098,7 @@ extern cvar_t sv_cheats;
  * implement that behavior that doesn't involve an #ifdef, or
  * making a mess of hooks.
  */
-qbool Cmd_Callback(cmd_state_t *cmd, cmd_function_t *func, const char *text, cmd_source_t src)
+qbool Cmd_Callback(cmd_state_t *cmd, cmd_function_t *func)
 {
        if (func->function)
                func->function(cmd);
@@ -2129,13 +2107,13 @@ qbool Cmd_Callback(cmd_state_t *cmd, cmd_function_t *func, const char *text, cmd
        return true;
 }
 
-qbool Cmd_CL_Callback(cmd_state_t *cmd, cmd_function_t *func, const char *text, cmd_source_t src)
+qbool Cmd_CL_Callback(cmd_state_t *cmd, cmd_function_t *func, const char *text, size_t textlen, cmd_source_t src)
 {
        // TODO: Assign these functions to QC commands directly?
        if(func->qcfunc)
        {
-               if(((func->flags & CF_CLIENT) && CL_VM_ConsoleCommand(text)) ||
-                  ((func->flags & CF_SERVER) && SV_VM_ConsoleCommand(text)))
+               if(((func->flags & CF_CLIENT) && CL_VM_ConsoleCommand(text, textlen)) ||
+                  ((func->flags & CF_SERVER) && SV_VM_ConsoleCommand(text, textlen)))
                        return true;
 
                if (func->overridden) // If this QC command overrides an engine command,
@@ -2154,13 +2132,13 @@ qbool Cmd_CL_Callback(cmd_state_t *cmd, cmd_function_t *func, const char *text,
                        return true;
                }
        }
-       return Cmd_Callback(cmd, func, text, src);
+       return Cmd_Callback(cmd, func);
 }
 
-qbool Cmd_SV_Callback(cmd_state_t *cmd, cmd_function_t *func, const char *text, cmd_source_t src)
+qbool Cmd_SV_Callback(cmd_state_t *cmd, cmd_function_t *func, const char *text, size_t textlen, cmd_source_t src)
 {
        if(func->qcfunc && (func->flags & CF_SERVER))
-               return SV_VM_ConsoleCommand(text);
+               return SV_VM_ConsoleCommand(text, textlen);
        else if (src == src_client)
        {
                if((func->flags & CF_CHEAT) && !sv_cheats.integer)
@@ -2180,7 +2158,7 @@ A complete command line has been parsed, so try to execute it
 FIXME: lookupnoadd the token to speed search?
 ============
 */
-void Cmd_ExecuteString (cmd_state_t *cmd, const char *text, cmd_source_t src, qbool lockmutex)
+void Cmd_ExecuteString(cmd_state_t *cmd, const char *text, size_t textlen, cmd_source_t src, qbool lockmutex)
 {
        int oldpos;
        cmd_function_t *func;
@@ -2200,12 +2178,12 @@ void Cmd_ExecuteString (cmd_state_t *cmd, const char *text, cmd_source_t src, qb
 // check functions
        for (func = cmd->userdefined->qc_functions; func; func = func->next)
                if (!strcasecmp(cmd->argv[0], func->name))
-                       if(cmd->Handle(cmd, func, text, src))
+                       if(cmd->Handle(cmd, func, text, textlen, src))
                                goto functions_done;
 
        for (func = cmd->engine_functions; func; func=func->next)
                if (!strcasecmp (cmd->argv[0], func->name))
-                       if(cmd->Handle(cmd, func, text, src))
+                       if(cmd->Handle(cmd, func, text, textlen, src))
                                goto functions_done;
 
 functions_done:
@@ -2234,7 +2212,8 @@ functions_done:
                goto done;
 
 // check cvars
-       if (!Cvar_Command(cmd) && host.framecount > 0)
+       // Xonotic is still maintained so we don't want to hide problems from getting fixed
+       if (!Cvar_Command(cmd) && (host.framecount > 0 || gamemode == GAME_XONOTIC))
                Con_Printf(CON_WARN "Unknown command \"%s\"\n", Cmd_Argv(cmd, 0));
 done:
        cmd->cbuf->tokenizebufferpos = oldpos;