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Server: Send THINGS_HERE data only about things in player's map memory.
[plomrogue] / src / server / run.c
index 8c1297d1da1172a51a802578c5d01c5ce99f016a..83fc1a0f737963d5b17b7ceaa0e9d13507941af4 100644 (file)
@@ -1,16 +1,22 @@
-/* src/server/run.c */
+/* src/server/run.c
+ *
+ * This file is part of PlomRogue. PlomRogue is licensed under the GPL version 3
+ * or any later version. For details on its copyright, license, and warranties,
+ * see the file NOTICE in the root directory of the PlomRogue source package.
+ */
 
-#define _POSIX_C_SOURCE 200809L
+#define _POSIX_C_SOURCE 200809L /* strdup() */
 #include "run.h"
 #include <stddef.h> /* NULL */
-#include <stdint.h> /* uint8_t, uint16_t, uint32_t */
+#include <stdint.h> /* uint8_t, uint16_t, uint32_t, int16_t */
 #include <stdio.h> /* FILE, printf(), fflush() */
-#include <stdlib.h> /* free() */
+#include <stdlib.h> /* atoi(), free() */
 #include <string.h> /* strlen(), strcmp(), strncmp(), strdup() */
 #include <time.h> /* time_t, time() */
 #include <unistd.h> /* access() */
 #include "../common/parse_file.h" /* set_err_line_options(), token_from_line(),
-                                   * err_line(), err_line_inc(), parse_val()
+                                   * err_line(), err_line_inc(), parse_val(),
+                                   * parestest_int()
                                    */
 #include "../common/readwrite.h" /* try_fopen(), try_fcose(), try_fwrite(),
                                   * try_fgets(), textfile_width(), try_fputc(),
 #include "../common/try_malloc.h" /* try_malloc() */
 #include "ai.h" /* ai() */
 #include "cleanup.h" /* unset_cleanup_flag() */
-#include "god_commands.h" /* parse_god_command_1arg(),parse_god_command_2arg()*/
+#include "god_commands.h" /* parse_god_command_(1|2|3)arg() */
 #include "hardcoded_strings.h" /* s */
 #include "io.h" /* io_round(), save_world() */
-#include "things.h" /* Thing, get_thing_action_id_by_name(), get_player() */
+#include "things.h" /* Thing, ThingType, ThingInMemory, get_player(),
+                     * get_thing_action_id_by_name(), try_thing_proliferation()
+                     */
 #include "world.h" /* world */
 
 
@@ -35,24 +43,34 @@ static uint8_t set_char_by_string_comparison(char * string, char * comparand,
 /* Return 1 on world.exists, else 0 and err_line() appropriate error message. */
 static uint8_t player_commands_allowed();
 
-/* Parse player command "tok0" with no argument to player action. */
+/* Parse player commands "tok0" with optional argument "tok1" to player action.
+ * Return 1 on success, 0 on failure.
+ */
 static uint8_t parse_player_command_0arg(char * tok0);
-
-/* Parse player command "tok0" with one argument "tok1" to player action. */
 static uint8_t parse_player_command_1arg(char * tok0, char * tok1);
 
-/* Parse/apply command "tok0" (read further tokens as necessary). */
-static uint8_t parse_command(char * tok0);
+/* Parse/apply (non-)meta command "tok0" (read further tokens as necessary).
+ * Return 0 on failure, 1 on success, 2 on QUIT meta command.
+ */
+static uint8_t parse_command_nonmeta(char * tok0);
+static uint8_t parse_command_meta(char * tok0);
 
-/* Compares first line of server out file to world.server_test, aborts if they
- * don't match, but not before unsetting the flags deleting files in the server
- * directory, for in that case those must be assumed to belong to another server
- * process.
+/* Compare 1st line of server out file to world.server_test, abort if they don't
+ * match, but not before unsetting flags deleting files in the server directory,
+ * for in that case those must be assumed to belong to another server process.
  */
 static void server_test();
 
+/* Return array of IDs of non-owned things in game world, ended by non-ID -1. */
+static int16_t * build_whitelist();
+
+/* Return 1 if value of "id" appears in "whitelist", else 0. */
+static uint8_t thing_in_whitelist(uint8_t id, int16_t * whitelist);
+
 /* Run the game world and its inhabitants (and their actions) until the player
- * avatar is free to receive new commands (or is dead).
+ * avatar is free to receive new commands (or is dead). Only actions and
+ * proliferations for non-owned things are performed that exist at the start of
+ * the turn jumped into, or started anew by the cycle.
  */
 static void turn_over();
 
@@ -75,8 +93,7 @@ static uint8_t player_commands_allowed()
 {
     if (!world.exists)
     {
-        err_line(1, "No world exists in which to run player commands.");
-        return 0;
+        return !err_line(1, "No world exists in which to run player commands.");
     }
     return 1;
 }
@@ -144,7 +161,7 @@ static uint8_t parse_player_command_1arg(char * tok0, char * tok1)
 
 
 
-static uint8_t parse_command(char * tok0)
+static uint8_t parse_command_nonmeta(char * tok0)
 {
     if (parse_player_command_0arg(tok0))
     {
@@ -165,6 +182,57 @@ static uint8_t parse_command(char * tok0)
             {
                 return 1;
             }
+            else
+            {
+                char * tok3 = token_from_line(NULL);
+                if (tok2 && parse_god_command_3arg(tok0, tok1, tok2, tok3))
+                {
+                    return 1;
+                }
+            }
+        }
+    }
+    return 0;
+}
+
+
+
+static uint8_t parse_command_meta(char * tok0)
+{
+    if (!strcmp("QUIT", tok0))
+    {
+        return 2;
+    }
+    if (!strcmp("PING", tok0))
+    {
+        send_to_outfile("PONG\n", 1);
+        return 1;
+    }
+    if (!strcmp("THINGS_HERE", tok0))
+    {
+        char * tok1 = token_from_line(NULL);
+        char * tok2 = token_from_line(NULL);
+        if (tok1&&tok2 && !parsetest_int(tok1, '8')&&!parsetest_int(tok2, '8'))
+        {
+            if (!world.exists)
+            {
+                err_line(1, "Command only works on existing worlds.");
+                return 0;
+            }
+            send_to_outfile("THINGS_HERE START\n", 1);
+            struct Thing * player = get_player();
+            struct ThingInMemory * t;
+            for (t = player->t_mem; t; t = t->next)
+            {
+                if (t->pos.y == atoi(tok1) && t->pos.x == atoi(tok2))
+                {
+                    struct ThingType * tt = get_thing_type(t->type);
+                    send_to_outfile(tt->name, 0);
+                    send_to_outfile("\n", 1);
+                }
+            }
+            send_to_outfile("THINGS_HERE END\n", 1);
+            return 1;
         }
     }
     return 0;
@@ -192,40 +260,86 @@ static void server_test()
 
 
 
+static int16_t * build_whitelist()
+{
+    uint16_t i_things = NULL != world.things;
+    struct Thing * t = world.things;
+    for (; t; t = t->next, i_things++);
+    int16_t * whitelist = try_malloc(i_things * sizeof(int16_t), __func__);
+    for (i_things = 0, t = world.things; t;
+         whitelist[i_things] = t->id, t = t->next, i_things++);
+    whitelist[i_things] = -1;
+    return whitelist;
+}
+
+
+
+static uint8_t thing_in_whitelist(uint8_t id, int16_t * whitelist)
+{
+    uint16_t i;
+    for (i = 0; -1 < whitelist[i]; i++)
+    {
+        if ((int16_t) id == whitelist[i])
+        {
+            return 1;
+        }
+    }
+    return 0;
+}
+
+
+
 static void turn_over()
 {
     struct Thing * player = get_player();
     struct Thing * thing = player;
-    uint16_t start_turn = world.turn;
-    while (    0 < player->lifepoints
-           || (0 == player->lifepoints && start_turn == world.turn))
+    int16_t * whitelist = build_whitelist();
+    while (0 < player->lifepoints)
     {
-        if (NULL == thing)
+        if (!thing)
         {
             world.turn++;
             thing = world.things;
-        }
-        if (0 < thing->lifepoints)
+            free(whitelist);
+            whitelist = build_whitelist();/* The whitelist excludes things    */
+        }                                 /* that appear only during the turn.*/
+        if (thing_in_whitelist(thing->id, whitelist))
         {
-            if (0 == thing->command)
+            if (0 < thing->lifepoints)
             {
-                if (thing == player)
+                if (0 == thing->command)
                 {
-                    break;
+                    if (thing == player)
+                    {
+                        break;
+                    }
+                    ai(thing);
+                }
+                thing->progress++;
+                struct ThingAction * ta = get_thing_action(thing->command);
+                if (thing->progress == ta->effort)
+                {
+                    ta->func(thing);
+                    thing->command = 0;
+                    thing->progress = 0;
                 }
-                ai(thing);
-            }
-            thing->progress++;
-            struct ThingAction * ta = get_thing_action(thing->command);
-            if (thing->progress == ta->effort)
-            {
-                ta->func(thing);
-                thing->command = 0;
-                thing->progress = 0;
             }
+            try_thing_proliferation(thing);
         }
         thing = thing->next;
     }
+    free(whitelist);
+}
+
+
+
+extern void send_to_outfile(char * answer, uint8_t flush)
+{
+    try_fwrite(answer, strlen(answer), 1, world.file_out, __func__);
+    if (flush)
+    {
+        fflush(world.file_out);
+    }
 }
 
 
@@ -268,73 +382,65 @@ extern void record(char * msg, uint8_t force)
 
 
 
-extern void obey_msg(char * msg, uint8_t do_record, uint8_t do_verbose)
+extern uint8_t obey_msg(char * msg, uint8_t obey_state)
 {
-    if (world.is_verbose && do_verbose)
+    if (world.is_verbose)
     {
         exit_trouble(-1 == printf("Input: %s\n", msg), __func__, "printf");
     }
     set_err_line_options("Trouble with message: ", msg, 0);
     char * msg_copy = strdup(msg);
     char * tok0 = token_from_line(msg_copy);
-    if (NULL != tok0)
+    uint8_t ret = 0;
+    if (tok0)
     {
-
-        if (parse_command(tok0))
+        ret = parse_command_meta(tok0);
+        if (ret || (obey_state < 2 && parse_command_nonmeta(tok0)))
         {
-            if (world.exists)
-            {
-                world.do_update = 1;
-            }
-            if (do_record)
+            if (!ret)
             {
-                record(msg, 0);
+                if (world.exists)
+                {
+                    world.do_update = 1;
+                }
+                if (1 == obey_state)
+                {
+                   record(msg, 0);
+                }
             }
             char * tokplus = token_from_line(NULL);
-            err_line(NULL != tokplus, "Too many arguments, ignoring overflow.");
-            free(msg_copy);
-            return;
+            err_line(!(!tokplus), "Too many arguments, ignoring overflow.");
+        }
+        else if (world.replay)
+        {
+            ret = 3;
+        }
+        else if (!world.replay)
+        {
+            err_line(1, "Invalid command/argument or bad number of tokens.");
         }
     }
-    err_line(1, "Unknown command/argument or bad number of tokens.");
     free(msg_copy);
+    return ret;
 }
 
 
 
-extern uint8_t io_loop()
+extern uint8_t io_loop(uint8_t obey_state)
 {
     while (1)
     {
         char * msg = io_round();
         server_test();
-        if (NULL == msg)
-        {
-            continue;
-        }
-        if (world.is_verbose)
-        {
-            exit_trouble(-1 == printf("Input: %s\n", msg), __func__, "printf");
-        }
-        if (!strcmp("QUIT", msg))
-        {
-            free(msg);
-            return 1;
-        }
-        if (!strcmp("PING", msg))
+        if (msg)
         {
+            uint8_t ret = obey_msg(msg, obey_state);
             free(msg);
-            char * pong = "PONG\n";
-            try_fwrite(pong, strlen(pong), 1, world.file_out, __func__);
-            fflush(world.file_out);
-            continue;
-        }
-        if (world.replay)
-        {
-            free(msg);
-            return 0;
+            if (   (!world.replay && 2 == ret)
+                || ( world.replay && 2 <= ret))
+            {
+                return ret;
+            }
         }
-        obey_msg(msg, 1, 0);
-        free(msg);
     }
 }