Step assist research

src/main/kotlin/ru/dbotthepony/mc/otm/android/feature/StepAssistFeature.kt

@@ -0,0 +1,31 @@
+package ru.dbotthepony.mc.otm.android.feature
+
+import net.minecraft.world.entity.ai.attributes.AttributeModifier
+import net.minecraftforge.common.ForgeMod
+import ru.dbotthepony.mc.otm.android.AndroidFeature
+import ru.dbotthepony.mc.otm.capability.android.AndroidCapability
+import ru.dbotthepony.mc.otm.registry.AndroidFeatures
+import java.util.*
+
+class StepAssistFeature(android: AndroidCapability) : AndroidFeature(AndroidFeatures.EXTENDED_REACH, android) {
+	override fun applyModifiers() {
+		if (!ForgeMod.STEP_HEIGHT_ADDITION.isPresent)
+			return
+
+		val reach = entity.getAttribute(ForgeMod.STEP_HEIGHT_ADDITION.get()) ?: return
+
+		reach.removePermanentModifier(MODIFIER_ID)
+		reach.addPermanentModifier(AttributeModifier(MODIFIER_ID, type.displayName.toString(), level + 1.0, AttributeModifier.Operation.ADDITION))
+	}
+
+	override fun removeModifiers() {
+		if (!ForgeMod.STEP_HEIGHT_ADDITION.isPresent)
+			return
+
+		entity.getAttribute(ForgeMod.STEP_HEIGHT_ADDITION.get())?.removePermanentModifier(MODIFIER_ID)
+	}
+
+	companion object {
+		private val MODIFIER_ID = UUID.fromString("4a3fae46-47a8-a03f-857d-f5c2b2c8f2f4")
+	}
+}

src/main/kotlin/ru/dbotthepony/mc/otm/registry/AndroidFeatures.kt

@@ -5,15 +5,13 @@ import net.minecraftforge.registries.DeferredRegister
 import ru.dbotthepony.mc.otm.OverdriveThatMatters
 import ru.dbotthepony.mc.otm.android.AndroidFeatureType
 import ru.dbotthepony.mc.otm.android.DummyAndroidFeature
-import ru.dbotthepony.mc.otm.android.feature.ExtendedReach
+import ru.dbotthepony.mc.otm.android.feature.*
-import ru.dbotthepony.mc.otm.android.feature.LimbOverclocking
-import ru.dbotthepony.mc.otm.android.feature.NanobotsArmor
-import ru.dbotthepony.mc.otm.android.feature.NanobotsRegeneration
 
 object AndroidFeatures {
 	private val registry = DeferredRegister.create(AndroidFeatureType::class.java, OverdriveThatMatters.MOD_ID)
 
 	val AIR_BAGS: AndroidFeatureType<*> by registry.register(MNames.AIR_BAGS) { AndroidFeatureType(::DummyAndroidFeature) }
+	val STEP_ASSIST: AndroidFeatureType<*> by registry.register(MNames.STEP_ASSIST) { AndroidFeatureType(::StepAssistFeature) }
 	val LIMB_OVERCLOCKING: AndroidFeatureType<*> by registry.register(MNames.LIMB_OVERCLOCKING) { AndroidFeatureType(::LimbOverclocking) }
 	val NANOBOTS_REGENERATION: AndroidFeatureType<*> by registry.register(MNames.NANOBOTS_REGENERATION) { AndroidFeatureType(::NanobotsRegeneration) }
 	val NANOBOTS_ARMOR: AndroidFeatureType<*> by registry.register(MNames.NANOBOTS_ARMOR) { AndroidFeatureType(::NanobotsArmor) }

src/main/kotlin/ru/dbotthepony/mc/otm/registry/AndroidResearch.kt

@@ -89,6 +89,15 @@ object AndroidResearch {
 			.build()
 	}
 
+	val STEP_ASSIST: AndroidResearchType<*> by registry.register(MNames.STEP_ASSIST) {
+		AndroidResearchBuilder()
+			.withExperience(24)
+			.addFeatureResult(AndroidFeatures.STEP_ASSIST)
+			.withDescription()
+			.withIcon(ICON_STEP_ASSIST)
+			.build()
+	}
+
 	val EXTENDED_REACH: AndroidResearchType<*> by registry.register(MNames.EXTENDED_REACH) {
 		AndroidResearchBuilder()
 			.withExperience(40)

src/main/kotlin/ru/dbotthepony/mc/otm/registry/MNames.kt

@@ -154,6 +154,7 @@ object MNames {
 
 	// android features and research
 	const val AIR_BAGS = "air_bags"
+	const val STEP_ASSIST = "step_assist"
 
 	const val LIMB_OVERCLOCKING = "limb_overclocking"
 	const val LIMB_OVERCLOCKING_1 = "limb_overclocking_1"