From da2cb9b62548b645d6c4587ead923cf038ad2d00 Mon Sep 17 00:00:00 2001
From: IQuant <quant3234@gmail.com>
Date: Tue, 17 Sep 2024 14:31:08 +0300
Subject: [PATCH] get_cell impl in ewext (maybe)

---
 .vscode/c_cpp_properties.json | 15 +++++++++++++++
 .vscode/settings.json         |  3 ++-
 ewext/src/lib.rs              |  2 ++
 ewext/src/noita.rs            | 16 ++++++++++++++++
 4 files changed, 35 insertions(+), 1 deletion(-)
 create mode 100644 .vscode/c_cpp_properties.json
 create mode 100644 ewext/src/noita.rs

diff --git a/.vscode/c_cpp_properties.json b/.vscode/c_cpp_properties.json
new file mode 100644
index 00000000..64d3f903
--- /dev/null
+++ b/.vscode/c_cpp_properties.json
@@ -0,0 +1,15 @@
+{
+    "configurations": [
+        {
+            "name": "Linux",
+            "includePath": [
+                "${workspaceFolder}/**"
+            ],
+            "defines": [],
+            "cStandard": "c17",
+            "cppStandard": "c++17",
+            "intelliSenseMode": "linux-clang-x64"
+        }
+    ],
+    "version": 4
+}
\ No newline at end of file
diff --git a/.vscode/settings.json b/.vscode/settings.json
index bcad2d74..095aab46 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -9,5 +9,6 @@
     "Lua.diagnostics.globals": [
         "wait",
         "async"
-    ]
+    ],
+    "C_Cpp.default.compilerPath": "/usr/bin/clang++"
 }
\ No newline at end of file
diff --git a/ewext/src/lib.rs b/ewext/src/lib.rs
index 8486b869..5e2715bf 100644
--- a/ewext/src/lib.rs
+++ b/ewext/src/lib.rs
@@ -4,6 +4,8 @@ use lua_bindings::{lua_State, Lua51};
 
 mod lua_bindings;
 
+mod noita;
+
 static LUA: LazyLock<Lua51> = LazyLock::new(|| unsafe {
     let lib = libloading::Library::new("./lua51.dll").expect("library to exist");
     Lua51::from_library(lib).expect("library to be lua")
diff --git a/ewext/src/noita.rs b/ewext/src/noita.rs
new file mode 100644
index 00000000..2425cb40
--- /dev/null
+++ b/ewext/src/noita.rs
@@ -0,0 +1,16 @@
+use std::ffi::c_void;
+
+pub(crate) struct ChunkMap {
+    this: *mut c_void,
+}
+
+impl ChunkMap {
+    unsafe fn get_cell(&self, x: u32, y: u32) {
+        let x = x as isize;
+        let y = y as isize;
+        let index = ((((y) >> 9) - 256 & 511) * 512 + (((x) >> 9) - 256 & 511)) * 4;
+        let chunk_arr = self.this.offset(8).cast::<*const c_void>().read();
+        let chunk = chunk_arr.offset(index).cast::<*const c_void>().read();
+        let pixel = chunk.offset(((y & 511) << 9 | x & 511) * 4);
+    }
+}