➕ Experimental anti-snapback

src/main/java/dev/isxander/controlify/utils/ControllerUtils.java

@@ -1,7 +1,40 @@
 package dev.isxander.controlify.utils;
 
+import net.minecraft.util.Mth;
+
 public class ControllerUtils {
     public static float deadzone(float value, float deadzone) {
         return (value - Math.copySign(Math.min(deadzone, Math.abs(value)), value)) / (1 - deadzone);
     }
+
+    public static float applyCircularityX(float x, float y) {
+        return (float) (x * Math.sqrt(1 - (y * y) / 2));
+    }
+    public static float applyCircularityY(float x, float y) {
+        return (float) (y * Math.sqrt(1 - (x * x) / 2));
+    }
+
+    public static boolean shouldApplyAntiSnapBack(float x, float y, float px, float py, float threshold) {
+        float dx = x - px;
+        float dy = y - py;
+        float distanceSquared = dx * dx + dy * dy;
+
+        boolean isSnap = distanceSquared >= threshold * threshold;
+        boolean hasCrossedOrigin = Math.signum(x) != Math.signum(px) && Math.signum(y) != Math.signum(py);
+
+        if (isSnap && hasCrossedOrigin) {
+            // t is the distance from the origin to the middle of the line
+            float t = (-x * (px - x) + -y * (py - y)) / distanceSquared;
+            t = Mth.clamp(t, 0, 1);
+
+            // Calculate the distance from the middle of the line to the origin
+            double distanceToMiddle = Math.sqrt(Math.pow(-t * x + t * px, 2)
+                    + Math.pow(-t * y + t * py, 2));
+
+            // If the distance is less than 0.05, then the stick is close enough to the middle to be snap-backed
+            return distanceToMiddle <= 0.01;
+        }
+
+        return false;
+    }
 }