From 0d16f01571ec8315f3979eae46981e559ade1cf9 Mon Sep 17 00:00:00 2001
From: mat <27899617+mat-1@users.noreply.github.com>
Date: Fri, 10 Jan 2025 16:45:27 -0600
Subject: Fluid physics (#199)

* start implementing fluid physics

* Initial implementation of fluid pushing

* different travel function in water

* bubble columns

* jumping in water

* cleanup

* change ultrawarm to be required

* fix for clippy
---
 azalea-core/src/math.rs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'azalea-core/src/math.rs')

diff --git a/azalea-core/src/math.rs b/azalea-core/src/math.rs
index 67ece5cc..a763fc49 100644
--- a/azalea-core/src/math.rs
+++ b/azalea-core/src/math.rs
@@ -86,6 +86,25 @@ pub fn to_degrees(radians: f64) -> f64 {
     radians * 57.29577951308232
 }
 
+/// Returns either -1, 0, or 1, depending on whether the number is negative,
+/// zero, or positive.
+///
+/// This function exists because f64::signum doesn't check for 0.
+pub fn sign(num: f64) -> f64 {
+    if num == 0. {
+        0.
+    } else {
+        num.signum()
+    }
+}
+pub fn sign_as_int(num: f64) -> i32 {
+    if num == 0. {
+        0
+    } else {
+        num.signum() as i32
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
-- 
cgit v1.2.3