Fix Gui_addMessage injection for the API and tidy

mods/include/mods/misc/misc.h

@@ -30,5 +30,6 @@ void misc_run_on_swap_buffers(const std::function<void()> &function);
 std::string misc_get_player_username(Player *player);
 std::map<int, std::string> &misc_get_entity_names();
 std::string misc_get_entity_name(Entity *entity);
+Entity *misc_make_entity_from_id(Level *level, int id);
 
 static constexpr int line_height = 8;

mods/src/api/README.md

@@ -20,7 +20,8 @@ This includes:
   - When compatibility mode is enabled, `|` in the chat messages is replaced with `\`
   - When compatibility mode is disabled, `|` in the chat messages is replaced with `\|`
   - When compatibility mode is disabled, the first "0" is removed, so the return value is just the message
-  - The messages are not cleared
+- [x] `player.events.chat.posts() -> {"0", message}[]`
+ - This is *exactly* the same as `events.chat.posts`, however it only returns chat messages sent by the player
 - [x] `events.projectile.hits() -> {x: int, y: int, z: int, "1", owner: string, target: int}`
   - Returns a list of projectile hit events, the list is cleared each time it is read by this call
   - When target id is not 0, it means the projectile hit an entity and (x, y, z) is the entity's position
@@ -86,12 +87,10 @@ This includes:
 
 It does not implement (due to MCPI limitations):
 - Per-entity events
-- Per-player events
+- Per-player events besides `player.events.chat.posts` for the main player
-- `events.chat.posts`'s id field is always set to -1
+- `events.chat.posts`'s id field is always set to 0
-- `events.chat.posts` only returns the last 30 messages, and does *not* clear them after each API call
 
 Egdecases:
-- `world.removeEntity` will remove a player if given a players id.
 - `world.removeEntities`/`player.removeEntities`/`entity.removeEntities` will not remove players when given 0 or -1 for type.
 - `entity.getName` will not get the name of non-player entities with a type id of 0 due to ambiguity.
 - All Raspberry Juice commands/responses involving the player name are designed around the MCJE username restrictions, not the much looser MCPI restrictions. They may cause problems.

mods/src/api/api.cpp

@@ -444,14 +444,9 @@ std::string CommandServer_parse_injection(CommandServer_parse_t old, CommandServ
         x += ix - ix1;
         y += iy - iy1;
         z += iz - iz1;
-        if (compat_mode && modern_entity_id_mapping.find(id) != modern_entity_id_mapping.end()) id = modern_entity_id_mapping[id];
+        if (compat_mode && modern_entity_id_mapping.contains(id)) id = modern_entity_id_mapping[id];
         // Spawn
-        Entity *entity = NULL;
+        Entity *entity = misc_make_entity_from_id(commandserver->minecraft->level, id);
-        if (id < 0x40) {
-            entity = (Entity *) MobFactory::CreateMob(id, commandserver->minecraft->level);
-        } else {
-            entity = EntityFactory::CreateEntity(id, commandserver->minecraft->level);
-        }
         if (entity == NULL) return fail;
         entity->moveTo(x, y, z, 0, 0);
         commandserver->minecraft->level->addEntity(entity);
@@ -459,7 +454,7 @@ std::string CommandServer_parse_injection(CommandServer_parse_t old, CommandServ
     } else if (cmd == "world.getEntityTypes") {
         std::string result = "";
         for (auto &i : misc_get_entity_names()) {
-            if (compat_mode && modern_entity_id_mapping.find(i.first) != modern_entity_id_mapping.end()) result += std::to_string(modern_entity_id_mapping[i.first]);
+            if (compat_mode && modern_entity_id_mapping.contains(i.first)) result += std::to_string(modern_entity_id_mapping[i.first]);
             else result += std::to_string(i.first);
             result += "," + i.second + "|";
         }
@@ -490,12 +485,7 @@ std::string CommandServer_parse_injection(CommandServer_parse_t old, CommandServ
 static Entity *shooter = NULL;
 static HitResult *Arrow_tick_HitResult_constructor_injection(HitResult *self, Entity *target) {
     // Orignal
-    self->type = 1;
+    self->constructor(target);
-    self->entity = target;
-    self->unknown = false;
-    self->exact.x = target->x;
-    self->exact.y = target->y;
-    self->exact.z = target->z;
     // Add event
     if (shooter && shooter->isPlayer()) {
         push_circular_queue(ProjectileHitEvent{
@@ -558,11 +548,18 @@ static void Throwable_tick_Throwable_onHit_injection(Throwable *self, HitResult
 }
 
 static void Gui_addMessage_injection(Gui_addMessage_t original, Gui *gui, const std::string &text) {
+    static bool recursing = false;
+    if (recursing) {
+        original(gui, text);
+    } else {
         push_circular_queue(ChatEvent{
             text,
             is_sending_to_chat()
         }, chatEvents, chat_events_start, chat_events_at);
+        recursing = true;
         original(gui, text);
+        recursing = false;
+    }
 }
 
 void init_api() {

mods/src/misc/api.cpp

@@ -173,6 +173,13 @@ std::string misc_get_entity_name(Entity *entity) {
     }
 }
 
+Entity *misc_make_entity_from_id(Level *level, int id) {
+    if (id < 0x40) {
+        return (Entity *) MobFactory::CreateMob(id, level);
+    }
+    return EntityFactory::CreateEntity(id, level);
+}
+
 // Init
 void _init_misc_api() {
     // Handle Custom Creative Inventory Setup Behavior

symbols/src/misc/HitResult.def

@@ -1,5 +1,7 @@
 size 0x28;
 
+constructor (Entity *entity) = 0xd3a98;
+
 property int type = 0x0;
 property int x = 0x4;
 property int y = 0x8;