From f177cc716c5f2aa5b50b14ccbb421de89e3a7854 Mon Sep 17 00:00:00 2001
From: Kai Stevenson <kai@kaistevenson.com>
Date: Sun, 16 Aug 2026 17:29:42 -0700
Subject: wip

---
 src/sim/cell_sim/overlay.rs | 50 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 src/sim/cell_sim/overlay.rs

(limited to 'src/sim/cell_sim/overlay.rs')

diff --git a/src/sim/cell_sim/overlay.rs b/src/sim/cell_sim/overlay.rs
new file mode 100644
index 0000000..ee494ae
--- /dev/null
+++ b/src/sim/cell_sim/overlay.rs
@@ -0,0 +1,50 @@
+use crate::{Config, Input, sim::cell_sim::world::World};
+
+pub fn create_compute_combined_overlay_offset(
+    world: &World,
+    config: &Config,
+    input: &Input,
+) -> impl Fn(i32, i32) -> (u8, u8, u8, u8) {
+    puffin::profile_function!();
+    // TODO fix this move?
+    move |pixel_x: i32, pixel_y: i32| {
+        // could allow negative offsets too
+        let mut offset: (u8, u8, u8, u8) = (0x00, 0x00, 0x00, 0x00);
+
+        // // bounds
+        // // left
+        // let xl = -((board.get_game_width() / 2 + 1) as i32);
+        // // right
+        // let xu = (board.get_game_width() / 2 + 1) as i32;
+        // // bottom
+        // let yl = -((board.get_game_height() / 2 + 1) as i32);
+        // // top
+        // let yu = (board.get_game_height() / 2 + 1) as i32;
+
+        // if ((pixel_x == xl || pixel_x == xu) && (pixel_y <= yu && pixel_y >= yl))
+        //     || (pixel_y == yl || pixel_y == yu) && (pixel_x <= xu && pixel_x >= xl)
+        // {
+        //     offset.0 = offset.0.saturating_add(0xFF);
+        //     offset.1 = offset.1.saturating_add(0xFF);
+        //     offset.2 = offset.2.saturating_add(0xFF);
+        // }
+
+        // // grid
+        // if pixel_x % 30 == 0 || pixel_y % 30 == 0 {
+        //     offset.0 = offset.0.saturating_add(0x10);
+        //     offset.1 = offset.1.saturating_add(0x10);
+        //     offset.2 = offset.2.saturating_add(0x10);
+        // }
+
+        // // brush/selection
+        // if input.last_mouse_pos_on_board.is_some_and(|p| {
+        //     ((pixel_x - p.0).pow(2) + (pixel_y - p.1).pow(2)) < (config.brush_radius as i32).pow(2)
+        // }) {
+        //     offset.0 = offset.0.saturating_add(0x82);
+        //     offset.1 = offset.1.saturating_add(0xA1);
+        //     offset.2 = offset.2.saturating_add(0xAD);
+        // }
+
+        return offset;
+    }
+}
-- 
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