Rewrite of how lua hooks chat commands

build-windows-visual-studio/sm64ex.vcxproj

@@ -532,6 +532,7 @@
     <ClCompile Include="..\src\pc\network\discord\user.c" />
     <ClCompile Include="..\src\pc\network\network.c" />
     <ClCompile Include="..\src\pc\network\network_player.c" />
+    <ClCompile Include="..\src\pc\network\network_utils.c" />
     <ClCompile Include="..\src\pc\network\packets\packet.c" />
     <ClCompile Include="..\src\pc\network\packets\packet_area.c" />
     <ClCompile Include="..\src\pc\network\packets\packet_area_request.c" />
@@ -993,6 +994,7 @@
     <ClInclude Include="..\src\pc\network\discord\user.h" />
     <ClInclude Include="..\src\pc\network\network.h" />
     <ClInclude Include="..\src\pc\network\network_player.h" />
+    <ClInclude Include="..\src\pc\network\network_utils.h" />
     <ClInclude Include="..\src\pc\network\packets\packet.h" />
     <ClInclude Include="..\src\pc\network\reservation_area.h" />
     <ClInclude Include="..\src\pc\network\socket\socket.h" />

build-windows-visual-studio/sm64ex.vcxproj.filters

@@ -4878,6 +4878,9 @@
     <ClCompile Include="..\src\pc\djui\djui_panel_controls_extra.c">
       <Filter>Source Files\src\pc\djui\panel</Filter>
     </ClCompile>
+    <ClCompile Include="..\src\pc\network\network_utils.c">
+      <Filter>Source Files\src\pc\network</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\actors\common0.h">
@@ -6034,5 +6037,8 @@
     <ClInclude Include="..\src\pc\djui\djui_panel_controls_extra.h">
       <Filter>Source Files\src\pc\djui\panel</Filter>
     </ClInclude>
+    <ClInclude Include="..\src\pc\network\network_utils.h">
+      <Filter>Source Files\src\pc\network</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>

docs/lua/constants.md

@@ -1390,8 +1390,7 @@
 | HOOK_ON_PVP_ATTACK | 5 |
 | HOOK_ON_PLAYER_CONNECTED | 6 |
 | HOOK_ON_PLAYER_DISCONNECTED | 7 |
-| HOOK_ON_CHAT_COMMAND | 8 |
-| HOOK_MAX | 9 |
+| HOOK_MAX | 8 |
 
 <br />
 

docs/lua/hooks.md

@@ -16,7 +16,6 @@ Hooks are a way for SM64 to trigger Lua code, whereas the functions listed in [f
 | HOOK_ON_PVP_ATTACK | Called when one player attacks another | [MarioState](structs.md#MarioState) attacker, [MarioState](structs.md#MarioState) victim |
 | HOOK_ON_PLAYER_CONNECTED | Called when a player connects | [MarioState](structs.md#MarioState) connector |
 | HOOK_ON_PLAYER_DISCONNECTED | Called when a player disconnects | [MarioState](structs.md#MarioState) disconnector |
-| HOOK_ON_CHAT_COMMAND | Called when a player types a chat message starting with '/' | `string` message -> `return` `true` on valid command |
 
 <br />
 
@@ -114,3 +113,33 @@ hook_mario_action(ACT_WALL_SLIDE, act_wall_slide)
 ```
 
 [:arrow_up_small:](#)
+
+## [hook_chat_command](#hook_chat_command)
+`hook_chat_command()` allows Lua mods to react and respond to chat commands. Chat commands start with the `/` character. The function the mod passes to the hook should return `true` when the command was valid and `false` otherwise.
+
+### Parameters
+
+| Field | Type |
+| ----- | ---- |
+| command | string |
+| description | string |
+| func | Lua Function |
+
+### Lua Example
+
+```lua
+function on_test_command(msg)
+    if msg == 'on' then
+        djui_chat_message_create('Test: enabled')
+        return true
+    elseif msg == 'off' then
+        djui_chat_message_create('Test: disabled')
+        return true
+    end
+    return false
+end
+
+hook_chat_command('test', "[on|off] turn test on or off", on_hide_and_seek_command)
+```
+
+[:arrow_up_small:](#)

mods/hide-and-seek.lua

@@ -9,6 +9,9 @@ for i=0,(MAX_PLAYERS-1) do
     sCachedState[i].seeking = false
 end
 
+-- globally sync enabled state
+gGlobalSyncTable.hideAndSeek = true
+
 -- keep track of round numbers for popup
 sCachedRoundNumber = 0
 gGlobalSyncTable.roundNumber = 0
@@ -32,8 +35,10 @@ function server_update(m)
     local hasSeeker = false
     local hasHider = false
     local activePlayers = {}
+    local connectedCount = 0
     for i=0,(MAX_PLAYERS-1) do
         if gNetworkPlayers[i].connected then
+            connectedCount = connectedCount + 1
             table.insert(activePlayers, gPlayerSyncTable[i])
             if gPlayerSyncTable[i].seeking then
                 hasSeeker = true
@@ -43,6 +48,12 @@ function server_update(m)
         end
     end
 
+    -- only change state if there are 2+ players
+    if connectedCount < 2 then
+        sStaleTimer = 0
+        return
+    end
+
     -- increment stale timer
     if not hasHider or not hasSeeker then
         sStaleTimer = sStaleTimer + 1
@@ -80,6 +91,11 @@ function server_update(m)
 end
 
 function update()
+    -- check gamemode enabled state
+    if not gGlobalSyncTable.hideAndSeek then
+        return
+    end
+
     -- only allow the server to figure out the seeker
     if network_is_server() then
         server_update(gMarioStates[0])
@@ -133,6 +149,11 @@ function mario_local_update(m)
 end
 
 function mario_update(m)
+    -- check gamemode enabled state
+    if not gGlobalSyncTable.hideAndSeek then
+        return
+    end
+
     -- this code runs for all players
     local s = gPlayerSyncTable[m.playerIndex]
 
@@ -161,6 +182,11 @@ function mario_update(m)
 end
 
 function mario_before_phys_step(m)
+    -- check gamemode enabled state
+    if not gGlobalSyncTable.hideAndSeek then
+        return
+    end
+
     local s = gPlayerSyncTable[m.playerIndex]
 
     -- only make seekers faster
@@ -190,6 +216,11 @@ function mario_before_phys_step(m)
 end
 
 function on_pvp_attack(attacker, victim)
+    -- check gamemode enabled state
+    if not gGlobalSyncTable.hideAndSeek then
+        return
+    end
+
     -- this code runs when a player attacks another player
     local sAttacker = gPlayerSyncTable[attacker.playerIndex]
     local sVictim = gPlayerSyncTable[victim.playerIndex]
@@ -211,6 +242,19 @@ function on_player_connected(m)
     s.seeking = false
 end
 
+function on_hide_and_seek_command(msg)
+    if msg == 'on' then
+        djui_chat_message_create('Hide-and-seek mod: enabled')
+        gGlobalSyncTable.hideAndSeek = true
+        return true
+    elseif msg == 'off' then
+        djui_chat_message_create('Hide-and-seek mod: disabled')
+        gGlobalSyncTable.hideAndSeek = false
+        return true
+    end
+    return false
+end
+
 -----------
 -- hooks --
 -----------
@@ -220,3 +264,5 @@ hook_event(HOOK_MARIO_UPDATE, mario_update)
 hook_event(HOOK_BEFORE_PHYS_STEP, mario_before_phys_step)
 hook_event(HOOK_ON_PVP_ATTACK, on_pvp_attack)
 hook_event(HOOK_ON_PLAYER_CONNECTED, on_player_connected)
+
+hook_chat_command('hide', "[on|off] turn hide-and-seek on or off", on_hide_and_seek_command)

src/pc/djui/djui_chat_box.c

@@ -33,8 +33,9 @@ static void djui_chat_box_input_enter(struct DjuiInputbox* chatInput) {
 
     if (strlen(chatInput->buffer) != 0) {
         if (chatInput->buffer[0] == '/') {
-            if (!smlua_call_event_hook_on_chat_command(chatInput->buffer)) {
+            if (!smlua_call_chat_command_hook(chatInput->buffer)) {
                 djui_chat_message_create("Unrecognized chat command.");
+                smlua_display_chat_commands();
             }
         } else {
             djui_chat_message_create_from(gNetworkPlayerLocal->globalIndex, chatInput->buffer);

src/pc/lua/smlua_constants_autogen.c

@@ -1439,8 +1439,7 @@ char gSmluaConstants[] = ""
 "HOOK_ON_PVP_ATTACK = 5\n"
 "HOOK_ON_PLAYER_CONNECTED = 6\n"
 "HOOK_ON_PLAYER_DISCONNECTED = 7\n"
-"HOOK_ON_CHAT_COMMAND = 8\n"
-"HOOK_MAX = 9\n"
+"HOOK_MAX = 8\n"
 "SPTASK_STATE_NOT_STARTED = 0\n"
 "SPTASK_STATE_RUNNING = 1\n"
 "SPTASK_STATE_INTERRUPTED = 2\n"

src/pc/lua/smlua_hooks.c

@@ -1,4 +1,5 @@
 #include "smlua.h"
+#include "pc/djui/djui_chat_message.h"
 
 #define MAX_HOOKED_REFERENCES 64
 
@@ -125,31 +126,6 @@ void smlua_call_event_hooks_network_player_param(enum LuaHookedEventType hookTyp
     }
 }
 
-bool smlua_call_event_hook_on_chat_command(char* message) {
-    lua_State* L = gLuaState;
-    if (L == NULL) { return false; }
-    bool ret = false;
-
-    struct LuaHookedEvent* hook = &sHookedEvents[HOOK_ON_CHAT_COMMAND];
-    for (int i = 0; i < hook->count; i++) {
-        // push the callback onto the stack
-        lua_rawgeti(L, LUA_REGISTRYINDEX, hook->reference[i]);
-
-        // push message
-        lua_pushstring(L, message);
-
-        // call the callback
-        if (0 != lua_pcall(L, 1, 1, 0)) {
-            LOG_LUA("Failed to call the callback: %s", lua_tostring(L, -1));
-            continue;
-        }
-
-        ret = ret || smlua_to_boolean(L, -1);
-    }
-
-    return ret;
-}
-
   ////////////////////
  // hooked actions //
 ////////////////////
@@ -172,6 +148,11 @@ int smlua_hook_mario_action(lua_State* L) {
     }
 
     lua_Integer action = smlua_to_integer(L, -2);
+    if (action == 0 || gSmLuaConvertSuccess) {
+        LOG_LUA("Hook Action: tried to hook invalid action");
+        return 0;
+    }
+
     int ref = luaL_ref(L, LUA_REGISTRYINDEX);
 
     if (ref == -1) {
@@ -221,6 +202,111 @@ bool smlua_call_action_hook(struct MarioState* m, s32* returnValue) {
     return false;
 }
 
+  /////////////////////////
+ // hooked chat command //
+/////////////////////////
+
+struct LuaHookedChatCommand {
+    char* command;
+    char* description;
+    int reference;
+};
+
+#define MAX_HOOKED_CHAT_COMMANDS 64
+
+static struct LuaHookedChatCommand sHookedChatCommands[MAX_HOOKED_CHAT_COMMANDS] = { 0 };
+static int sHookedChatCommandsCount = 0;
+
+int smlua_hook_chat_command(lua_State* L) {
+    if (L == NULL) { return 0; }
+    if (sHookedChatCommandsCount >= MAX_HOOKED_CHAT_COMMANDS) {
+        LOG_LUA("Hooked chat command exceeded maximum references!");
+        return 0;
+    }
+
+    const char* command = smlua_to_string(L, 1);
+    if (command == NULL || strlen(command) == 0 || !gSmLuaConvertSuccess) {
+        LOG_LUA("Hook chat command: tried to hook invalid command");
+        return 0;
+    }
+
+    const char* description = smlua_to_string(L, 2);
+    if (description == NULL || strlen(description) == 0 || !gSmLuaConvertSuccess) {
+        LOG_LUA("Hook chat command: tried to hook invalid description");
+        return 0;
+    }
+
+    int ref = luaL_ref(L, LUA_REGISTRYINDEX);
+    if (ref == -1) {
+        LOG_LUA("Hook chat command: tried to hook undefined function '%s'", command);
+        return 0;
+    }
+
+    struct LuaHookedChatCommand* hooked = &sHookedChatCommands[sHookedChatCommandsCount];
+    hooked->command = strdup(command);
+    hooked->description = strdup(description);
+    hooked->reference = ref;
+    if (!gSmLuaConvertSuccess) { return 0; }
+
+    sHookedChatCommandsCount++;
+    return 1;
+}
+
+bool smlua_call_chat_command_hook(char* command) {
+    lua_State* L = gLuaState;
+    if (L == NULL) { return false; }
+    for (int i = 0; i < sHookedChatCommandsCount; i++) {
+        struct LuaHookedChatCommand* hook = &sHookedChatCommands[i];
+        size_t commandLength = strlen(hook->command);
+        for (size_t j = 0; j < commandLength; j++) {
+            if (hook->command[j] != command[j + 1]) {
+                goto NEXT_HOOK;
+            }
+        }
+
+        char* params = &command[commandLength + 1];
+        if (*params != '\0' && *params != ' ') {
+            goto NEXT_HOOK;
+        }
+        if (*params == ' ') {
+            params++;
+        }
+
+        // push the callback onto the stack
+        lua_rawgeti(L, LUA_REGISTRYINDEX, hook->reference);
+
+        // push parameter
+        lua_pushstring(L, params);
+
+        // call the callback
+        if (0 != lua_pcall(L, 1, 1, 0)) {
+            LOG_LUA("Failed to call the callback: %s", lua_tostring(L, -1));
+            continue;
+        }
+
+        // output the return value
+        bool returnValue = smlua_to_boolean(L, -1);
+        lua_pop(L, 1);
+
+        if (!gSmLuaConvertSuccess) { return false; }
+
+        return returnValue;
+
+NEXT_HOOK:;
+    }
+
+    return false;
+}
+
+void smlua_display_chat_commands(void) {
+    for (int i = 0; i < sHookedChatCommandsCount; i++) {
+        struct LuaHookedChatCommand* hook = &sHookedChatCommands[i];
+        char msg[256] = { 0 };
+        snprintf(msg, 256, "/%s %s", hook->command, hook->description);
+        djui_chat_message_create(msg);
+    }
+}
+
   //////////
  // misc //
 //////////
@@ -238,6 +324,17 @@ static void smlua_clear_hooks(void) {
         sHookedMarioActions[i].reference = 0;
     }
     sHookedMarioActionsCount = 0;
+
+    for (int i = 0; i < sHookedChatCommandsCount; i++) {
+        if (sHookedChatCommands[i].command != NULL) { free(sHookedChatCommands[i].command); }
+        sHookedChatCommands[i].command = NULL;
+
+        if (sHookedChatCommands[i].description != NULL) { free(sHookedChatCommands[i].description); }
+        sHookedChatCommands[i].description = NULL;
+
+        sHookedChatCommands[i].reference = 0;
+    }
+    sHookedChatCommandsCount = 0;
 }
 
 void smlua_bind_hooks(void) {
@@ -246,5 +343,5 @@ void smlua_bind_hooks(void) {
 
     smlua_bind_function(L, "hook_event", smlua_hook_event);
     smlua_bind_function(L, "hook_mario_action", smlua_hook_mario_action);
-
+    smlua_bind_function(L, "hook_chat_command", smlua_hook_chat_command);
 }

src/pc/lua/smlua_hooks.h

@@ -12,7 +12,6 @@ enum LuaHookedEventType {
     HOOK_ON_PVP_ATTACK,
     HOOK_ON_PLAYER_CONNECTED,
     HOOK_ON_PLAYER_DISCONNECTED,
-    HOOK_ON_CHAT_COMMAND,
     HOOK_MAX,
 };
 
@@ -25,17 +24,18 @@ static char* LuaHookedEventTypeName[] = {
     "HOOK_ON_PVP_ATTACK",
     "HOOK_ON_PLAYER_CONNECTED",
     "HOOK_ON_PLAYER_DISCONNECTED",
-    "HOOK_ON_CHAT_COMMAND",
     "HOOK_MAX"
 };
 
 void smlua_call_event_hooks(enum LuaHookedEventType hookType);
 void smlua_call_event_hooks_mario_param(enum LuaHookedEventType hookType, struct MarioState* m);
 void smlua_call_event_hooks_mario_params(enum LuaHookedEventType hookType, struct MarioState* m1, struct MarioState* m2);
-bool smlua_call_event_hook_on_chat_command(char* message);
 
 bool smlua_call_action_hook(struct MarioState* m, s32* returnValue);
 
+bool smlua_call_chat_command_hook(char* command);
+void smlua_display_chat_commands(void);
+
 void smlua_bind_hooks(void);
 
 #endif