Exp animation clamp

Author: bladekt

common/src/main/kotlin/com/lambda/graphics/animation/Animation.kt

@@ -3,6 +3,7 @@ package com.lambda.graphics.animation
 import com.lambda.Lambda.mc
 import com.lambda.util.math.MathUtils.lerp
 import com.lambda.util.primitives.extension.partialTicks
+import kotlin.math.abs
 import kotlin.reflect.KProperty
 
 class Animation(initialValue: Double, val update: (Double) -> Double) {
@@ -24,16 +25,29 @@ class Animation(initialValue: Double, val update: (Double) -> Double) {
 
     companion object {
         fun AnimationTicker.exp(min: Double, max: Double, speed: Double, flag: () -> Boolean) =
-            Animation(min) {
-                val target = if (flag()) max else min
-                lerp(it, target, speed)
+            exp({ min }, { max }, speed, flag)
+
+        fun AnimationTicker.exp(min: () -> Double, max: () -> Double, speed: Double, flag: () -> Boolean) =
+            Animation(min()) {
+                val target = if (flag()) max() else min()
+                if (abs(target - it) < CLAMP) target
+                else lerp(it, target, speed)
             }.apply(::register)
 
         fun AnimationTicker.linear(min: Double, max: Double, step: Double, flag: () -> Boolean) =
             Animation(min) {
                 val target = if (flag()) max else min
                 target.coerceIn(it - step, it + step)
             }.apply(::register)
+
+        fun AnimationTicker.linear(min: () -> Double, max: () -> Double, step: Double, flag: () -> Boolean) =
+            Animation(min()) {
+                val target = if (flag()) max() else min()
+                target.coerceIn(it - step, it + step)
+            }.apply(::register)
+
+        // Exponent animation will never reach target value
+        private const val CLAMP = 0.01
     }
 }