read() less, dont use as_mut when as_ref is fine, simplify types by using & instead of *const where applicable

blob_guy/src/init_data.rs

@@ -71,12 +71,13 @@ fn get_function_start(func: *const c_void) -> eyre::Result<*const c_void> {
     loop {
         unsafe {
             if it as isize % 16 == 0
-                && (it.offset(-1).read() == 0xcc
-                    || it.offset(-1).read() == 0xc3
-                    || it.offset(-3).read() == 0xc2)
-                && (it.read() >= 0x50 && it.read() < 0x58)
-                && ((it.offset(1).read() >= 0x50 && it.offset(1).read() < 0x58)
-                    || (it.offset(1).read() == 0x8b && it.offset(2).read() == 0xec))
+                && (it.offset(-1).as_ref() == Some(&0xcc)
+                    || it.offset(-1).as_ref() == Some(&0xc3)
+                    || it.offset(-3).as_ref() == Some(&0xc2))
+                && (it.as_ref() >= Some(&0x50) && it.as_ref() < Some(&0x58))
+                && ((it.offset(1).as_ref() >= Some(&0x50) && it.offset(1).as_ref() < Some(&0x58))
+                    || (it.offset(1).as_ref() == Some(&0x8b)
+                        && it.offset(2).as_ref() == Some(&0xec)))
             {
                 return Ok(it.cast::<c_void>());
             }

blob_guy/src/lib.rs

@@ -53,25 +53,18 @@ fn init_particle_world_state(_: LuaState) -> eyre::Result<()> {
         let mut state = state.try_borrow_mut()?;
         let (construct_ptr, remove_ptr, global_ptr) = init_data::get_functions()?;
         let global = unsafe { global_ptr.as_ref() }.wrap_err("no global?")?;
-        let world_ptr = global.m_game_world.grid_world;
+        let world_ptr = global.m_grid_world;
         let chunk_map = world_ptr.chunk_map.cell_array;
-        let cell_factory = unsafe {
-            global
-                .m_cell_factory
-                .as_ref()
-                .wrap_err("no cell factory??")?
+        let material_list_ptr = global.m_cell_factory.cell_data_ptr;
+        let material_list = unsafe {
+            std::slice::from_raw_parts(material_list_ptr, global.m_cell_factory.cell_data_len)
         };
-        let material_list_ptr = cell_factory.cell_data_ptr;
-        let material_list =
-            unsafe { std::slice::from_raw_parts(material_list_ptr, cell_factory.cell_data_len) };
-
         let blob_guy = noita_api::raw::cell_factory_get_type("blob_guy".into())? as u16;
         state.blob_guy = blob_guy;
         let pws = ParticleWorldState {
             world_ptr,
             chunk_map,
             blob_ptr: unsafe { material_list_ptr.offset(blob_guy as isize) },
-            material_list_ptr,
             material_list,
             construct_ptr,
             remove_ptr,

blob_guy/src/noita.rs

@@ -6,10 +6,10 @@ use rayon::iter::{IndexedParallelIterator, IntoParallelIterator, ParallelIterato
 use std::arch::asm;
 use std::ffi::c_void;
 pub mod ntypes;
+#[derive(Debug)]
 pub struct ParticleWorldState {
-    pub world_ptr: *const ntypes::GridWorld,
+    pub world_ptr: &'static ntypes::GridWorld,
     pub chunk_map: &'static [ntypes::ChunkPtr; 512 * 512],
-    pub material_list_ptr: *const ntypes::CellData,
     pub material_list: &'static [ntypes::CellData],
     pub blob_ptr: *const ntypes::CellData,
     pub construct_ptr: *const c_void,
@@ -116,28 +116,25 @@ impl ParticleWorldState {
         &mut pixel_array[index as usize].0
     }
     pub fn get_cell_material_id(&self, cell: &ntypes::Cell) -> u16 {
-        let offset = unsafe { cell.material_ptr.offset_from(self.material_list_ptr) };
+        let offset = unsafe {
+            (cell.material_ptr as *const ntypes::CellData).offset_from(self.material_list.as_ptr())
+        };
         offset as u16
     }
 
-    pub fn get_cell_type(&self, cell: &ntypes::Cell) -> Option<ntypes::CellType> {
-        unsafe { Some(cell.material_ptr.as_ref()?.cell_type) }
-    }
     ///# Safety
     pub unsafe fn encode_area(&self, x: isize, y: isize, chunk: &mut Chunk) -> Result<(), ()> {
         let (shift_x, shift_y, pixel_array) = self.set_chunk(x, y)?;
-        let pixel_array = unsafe { pixel_array.as_mut() }.unwrap();
+        let pixel_array = unsafe { pixel_array.as_ref() }.unwrap();
         let mut modified = false;
         for ((i, j), pixel) in (0..CHUNK_SIZE as isize)
             .flat_map(|i| (0..CHUNK_SIZE as isize).map(move |j| (i, j)))
             .zip(chunk.iter_mut())
         {
-            *pixel = if let Some(cell) = self.get_cell_raw(shift_x + i, shift_y + j, pixel_array)
-                && let Some(cell_type) = self.get_cell_type(cell)
-            {
-                match cell_type {
+            *pixel = if let Some(cell) = self.get_cell_raw(shift_x + i, shift_y + j, pixel_array) {
+                match cell.material_ptr.cell_type {
                     ntypes::CellType::Liquid => {
-                        if cell.material_ptr == self.blob_ptr {
+                        if std::ptr::eq(cell.material_ptr, self.blob_ptr) {
                             modified = true;
                             CellType::Remove
                         } else {
@@ -246,11 +243,11 @@ impl ParticleWorldState {
             if let Some(cell) = self.get_cell_raw(
                 (x.floor() as isize).rem_euclid(512),
                 (y.floor() as isize).rem_euclid(512),
-                unsafe { pixel_array.as_mut() }.unwrap(),
+                unsafe { pixel_array.as_ref() }.unwrap(),
             ) {
                 let full = ntypes::FullCell::from(*cell);
                 noita_api::print!("{full:?}");
-                noita_api::print!("{:?}", unsafe { cell.material_ptr.as_ref() });
+                noita_api::print!("{:?}", cell.material_ptr);
             } else {
                 noita_api::print!("mat nil");
             }

blob_guy/src/noita/ntypes.rs

@@ -72,10 +72,16 @@ struct AABB {
     bottom_right: Position,
 }
 
+#[repr(C)]
+#[derive(Debug)]
+pub struct GridWorldThreadedVTable {
+    //TODO find some data maybe
+}
+
 #[repr(C)]
 #[derive(Debug)]
 struct GridWorldThreaded {
-    grid_world_threaded_vtable: *const c_void,
+    grid_world_threaded_vtable: &'static GridWorldThreadedVTable,
     unknown: [isize; 287],
     update_region: AABB,
 }
@@ -158,6 +164,30 @@ pub enum CellType {
     Fire = 4,
 }
 
+#[repr(C)]
+#[derive(Debug)]
+pub struct ExplosionConfig {
+    //TODO find some data maybe
+}
+#[allow(clippy::derivable_impls)]
+impl Default for ExplosionConfig {
+    fn default() -> Self {
+        Self {}
+    }
+}
+
+#[repr(C)]
+#[derive(Debug)]
+pub struct GridCosmeticParticleConfig {
+    //TODO find some data maybe
+ }
+#[allow(clippy::derivable_impls)]
+impl Default for GridCosmeticParticleConfig {
+    fn default() -> Self {
+        Self {}
+    }
+}
+
 #[repr(C)]
 #[derive(Debug)]
 pub struct CellData {
@@ -191,7 +221,7 @@ pub struct CellData {
     pub on_fire_flame_material_id: isize,
     pub on_fire_smoke_material: StdString,
     pub on_fire_smoke_material_id: isize,
-    pub explosion_config: *const c_void,
+    pub explosion_config: *const ExplosionConfig,
     pub durability: isize,
     pub crackability: isize,
     pub electrical_conductivity: bool,
@@ -274,7 +304,7 @@ pub struct CellData {
     pub show_in_creative_mode: bool,
     pub is_just_particle_fx: bool,
     padding9: [u8; 2],
-    pub grid_cosmetic_particle_config: *const c_void,
+    pub grid_cosmetic_particle_config: *const GridCosmeticParticleConfig,
 }
 impl Default for CellData {
     fn default() -> Self {
@@ -631,13 +661,13 @@ impl CellVTable {
 #[repr(C)]
 #[derive(Debug, Clone, Copy)]
 pub struct Cell {
-    pub vtable: *const CellVTable,
+    pub vtable: &'static CellVTable,
 
     pub hp: isize,
     unknown1: [isize; 2],
     pub is_burning: bool,
     unknown2: [u8; 3],
-    pub material_ptr: *const CellData,
+    pub material_ptr: &'static CellData,
 }
 unsafe impl Sync for Cell {}
 unsafe impl Send for Cell {}
@@ -651,9 +681,7 @@ pub enum FullCell {
 }
 impl From<Cell> for FullCell {
     fn from(value: Cell) -> Self {
-        if let Some(mat) = unsafe { value.material_ptr.as_ref() }
-            && mat.cell_type == CellType::Liquid
-        {
+        if value.material_ptr.cell_type == CellType::Liquid {
             FullCell::LiquidCell(*unsafe { value.get_liquid() })
         } else {
             FullCell::Cell(value)
@@ -709,15 +737,21 @@ pub struct CellFactory {
     //likely more data
 }
 
+#[repr(C)]
+#[derive(Debug)]
+pub struct Textures {
+    //TODO find some data maybe
+}
+
 #[repr(C)]
 #[derive(Debug)]
 pub struct GameGlobal {
     pub frame_num: usize,
     unknown1: [isize; 2],
     pub m_game_world: &'static GameWorld,
-    pub m_grid_world: *const c_void,
-    pub m_textures: *const c_void,
-    pub m_cell_factory: *const CellFactory,
+    pub m_grid_world: &'static GridWorld,
+    pub m_textures: &'static Textures,
+    pub m_cell_factory: &'static CellFactory,
     unknown2: [isize; 11],
     pub pause_state: isize,
 }