From 2372f0d2546752c341764137af53447dbe20d457 Mon Sep 17 00:00:00 2001
From: me <me@alloca.space>
Date: Sat, 20 Dec 2025 00:55:27 +0200
Subject: [PATCH] random flickering screen

---
 Cargo.lock                         | 92 ++++++++++++++++++++++++++++++
 Cargo.toml                         |  1 +
 game.ayin                          |  2 +-
 src/runtime/primitive_functions.rs | 13 ++++-
 4 files changed, 104 insertions(+), 4 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 38df657..5a4b641 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -116,6 +116,7 @@ dependencies = [
  "log",
  "lyn",
  "macroquad",
+ "rand",
  "thiserror",
 ]
 
@@ -330,6 +331,18 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "899def5c37c4fd7b2664648c28120ecec138e4d395b459e5ca34f9cce2dd77fd"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "r-efi",
+ "wasip2",
+]
+
 [[package]]
 name = "gilrs"
 version = "0.10.10"
@@ -660,6 +673,15 @@ dependencies = [
  "portable-atomic",
 ]
 
+[[package]]
+name = "ppv-lite86"
+version = "0.2.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85eae3c4ed2f50dcfe72643da4befc30deadb458a9b590d720cde2f2b1e97da9"
+dependencies = [
+ "zerocopy",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.103"
@@ -694,6 +716,41 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "r-efi"
+version = "5.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
+
+[[package]]
+name = "rand"
+version = "0.9.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6db2770f06117d490610c7488547d543617b21bfa07796d7a12f6f1bd53850d1"
+dependencies = [
+ "rand_chacha",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb"
+dependencies = [
+ "ppv-lite86",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "99d9a13982dcf210057a8a78572b2217b667c3beacbf3a0d8b454f6f82837d38"
+dependencies = [
+ "getrandom",
+]
+
 [[package]]
 name = "regex"
 version = "1.12.2"
@@ -878,6 +935,15 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
 
+[[package]]
+name = "wasip2"
+version = "1.0.1+wasi-0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0562428422c63773dad2c345a1882263bbf4d65cf3f42e90921f787ef5ad58e7"
+dependencies = [
+ "wit-bindgen",
+]
+
 [[package]]
 name = "wasm-bindgen"
 version = "0.2.106"
@@ -1106,3 +1172,29 @@ name = "windows_x86_64_msvc"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
+
+[[package]]
+name = "wit-bindgen"
+version = "0.46.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f17a85883d4e6d00e8a97c586de764dabcc06133f7f1d55dce5cdc070ad7fe59"
+
+[[package]]
+name = "zerocopy"
+version = "0.8.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd74ec98b9250adb3ca554bdde269adf631549f51d8a8f8f0a10b50f1cb298c3"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.8.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d8a8d209fdf45cf5138cbb5a506f6b52522a25afccc534d1475dad8e31105c6a"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
diff --git a/Cargo.toml b/Cargo.toml
index 82ee9e1..4b669dc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,6 +24,7 @@ macroquad = "0.4.14"
 lyn = "0.1.0"
 chumsky = "0.11.2"
 gamepads = "0.1.7"
+rand = "0.9.2"
 
 [dev-dependencies]
 insta = "1.44.3"
diff --git a/game.ayin b/game.ayin
index a80277c..c1855e8 100644
--- a/game.ayin
+++ b/game.ayin
@@ -5,7 +5,7 @@ let setup = fn() {
 };
 
 let update = fn(state, input) {
-  let new = 200;
+  let new = random_u8();
   state.player.position.x = new;
   return state;
 };
diff --git a/src/runtime/primitive_functions.rs b/src/runtime/primitive_functions.rs
index d346537..16efb1a 100644
--- a/src/runtime/primitive_functions.rs
+++ b/src/runtime/primitive_functions.rs
@@ -1,16 +1,18 @@
+use rand::prelude::*;
+
 use crate::ast;
 use crate::interpret::PrimitiveFuncs;
-use macroquad::prelude::*;
+use macroquad::prelude as mq;
 
 pub fn primitive_funcs() -> PrimitiveFuncs {
-    PrimitiveFuncs::new(vec![("frame_clear", clear)])
+    PrimitiveFuncs::new(vec![("frame_clear", clear), ("random_u8", random_u8)])
 }
 
 fn clear(args: Vec<ast::Value>) -> ast::Value {
     let r = to_u32(args.get(0));
     let g = to_u32(args.get(1));
     let b = to_u32(args.get(2));
-    clear_background(Color::from_rgba(r, g, b, 255));
+    mq::clear_background(mq::Color::from_rgba(r, g, b, 255));
     ast::UNIT_VALUE
 }
 
@@ -20,3 +22,8 @@ fn to_u32(value: Option<&ast::Value>) -> u8 {
         _ => 0,
     }
 }
+
+fn random_u8(_args: Vec<ast::Value>) -> ast::Value {
+    let random: u8 = rand::rng().random::<u8>();
+    ast::Value::Int(random as i32)
+}