feat: rsbuf packets implementation

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "rsbuf"
-version = "225.1.7"
+version = "225.1.8"
 edition = "2021"
 authors = ["2004Scape"]
 description = "A RuneScape update info computer."

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@2004scape/rsbuf",
-  "version": "225.1.7",
+  "version": "225.1.8",
   "description": "A RuneScape update info computer",
   "main": "dist/rsbuf.js",
   "types": "dist/rsbuf.d.ts",

src/build.rs

@@ -305,10 +305,10 @@ impl BuildArea {
         y: u8,
         z: u16
     ) -> bool {
-        if let Some(other) = unsafe { &*players.as_ptr().add(player as usize) } {
-            return !(self.players.contains(player) || !CoordGrid::within_distance_sw(&other.coord, &CoordGrid::from(x, y, z), self.view_distance) || other.pid == -1 || other.pid == pid || other.coord.y() != y);
-        }
-        return false;
+        return match unsafe { &*players.as_ptr().add(player as usize) } {
+            None => false,
+            Some(other) => !(self.players.contains(player) || !CoordGrid::within_distance_sw(&other.coord, &CoordGrid::from(x, y, z), self.view_distance) || other.pid == -1 || other.pid == pid || other.coord.y() != y),
+        };
     }
 
     #[inline]
@@ -320,9 +320,9 @@ impl BuildArea {
         y: u8,
         z: u16
     ) -> bool {
-        if let Some(other) = unsafe { &*npcs.as_ptr().add(npc as usize) } {
-            return !(self.npcs.contains(npc) || !CoordGrid::within_distance_sw(&other.coord, &CoordGrid::from(x, y, z), BuildArea::PREFERRED_VIEW_DISTANCE) || other.nid == -1 || other.coord.y() != y || !other.active);
-        }
-        return false;
+        return match unsafe { &*npcs.as_ptr().add(npc as usize) } {
+            None => false,
+            Some(other) => !(self.npcs.contains(npc) || !CoordGrid::within_distance_sw(&other.coord, &CoordGrid::from(x, y, z), BuildArea::PREFERRED_VIEW_DISTANCE) || other.nid == -1 || other.coord.y() != y || !other.active),
+        };
     }
 }

src/category.rs

@@ -0,0 +1,23 @@
+#![allow(non_camel_case_types)]
+
+use wasm_bindgen::prelude::wasm_bindgen;
+
+#[repr(u8)]
+#[wasm_bindgen]
+// todo: measure how many events we should expect to receive from the client
+// osrs has this as 50/10 but we know that's not true in rs2
+// todo: determine which packets belong in which category for this era
+pub enum ClientProtCategory {
+    CLIENT_EVENT = 0,
+    USER_EVENT = 1,
+    RESTRICTED_EVENT = 2, // flood restricted events
+}
+
+#[repr(u8)]
+#[wasm_bindgen]
+// packet decoding limit per tick, exceeding this ends decoding and picks up where it left off on the next tick
+pub enum ClientProtCategoryLimit {
+    CLIENT_EVENT = 20,
+    USER_EVENT = 5,
+    RESTRICTED_EVENT = 2,
+}

src/coord.rs

@@ -47,4 +47,14 @@ impl CoordGrid {
     pub const fn zone(pos: u16) -> u16 {
         return pos >> 3;
     }
+
+    #[inline]
+    pub const fn origin(pos: u16) -> u16 {
+        return ((pos >> 3) - 6) << 3;
+    }
+
+    #[inline]
+    pub const fn pack_zone_coord(x: u16, z: u16) -> u8 {
+        return (((x & 0x7) as u8) << 4) | (z & 0x7) as u8;
+    }
 }