Use atlas for android research icons, again

src/main/kotlin/ru/dbotthepony/mc/otm/client/render/ResearchIcons.kt

@@ -34,30 +34,30 @@ object ResearchIcons {
 	val KOT = ResourceLocation(OverdriveThatMatters.MOD_ID,  "textures/block/ph_kitty.png").element(0f, 0f, 32f, 32f, 32f, 32f)
 
 	init {
-		var i = 0
+		val grid = SubSkinGrid(AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_upgrades"), 126f, 126f), 18f, 18f, 7, 7)
 
-		ICON_TRANSFER = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_TRANSFER = grid.next()
-		ICON_ATTACK_BOOST = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_ATTACK_BOOST = grid.next()
-		ICON_PLASMA_SHIELD_BOOST = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_PLASMA_SHIELD_BOOST = grid.next()
-		ICON_CLOAK = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_CLOAK = grid.next()
-		ICON_GRAVITATIONAL_STABILIZER = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_GRAVITATIONAL_STABILIZER = grid.next()
-		ICON_AIR_BAGS = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_AIR_BAGS = grid.next()
-		ICON_JUMP_BOOST = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_JUMP_BOOST = grid.next()
-		ICON_FEATHER_FALLING = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_FEATHER_FALLING = grid.next()
-		ICON_ITEM_MAGNET = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_ITEM_MAGNET = grid.next()
-		ICON_ARROW = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_ARROW = grid.next()
-		ICON_ARMOR = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_ARMOR = grid.next()
-		ICON_NANOBOTS = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_NANOBOTS = grid.next()
-		ICON_NIGHT_VISION = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_NIGHT_VISION = grid.next()
-		ICON_OXYGEN_SUPPLY = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_OXYGEN_SUPPLY = grid.next()
-		ICON_PLASMA_SHIELD = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_PLASMA_SHIELD = grid.next()
-		ICON_SHOCKWAVE = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_SHOCKWAVE = grid.next()
-		ICON_LIMB_OVERCLOCKING = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_LIMB_OVERCLOCKING = grid.next()
-		ICON_STEP_ASSIST = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_STEP_ASSIST = grid.next()
-		ICON_ENDER_TELEPORT = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_ENDER_TELEPORT = grid.next()
-		ICON_WIRELESS_CHARGING = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_WIRELESS_CHARGING = grid.next()
-		ICON_UNKNOWN = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_UNKNOWN = grid.next()
-		ICON_EXTENDED_REACH = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_EXTENDED_REACH = grid.next()
-		ICON_PHANTOM_ATTRACTOR = AtlasSkinElement(ResourceLocation(OverdriveThatMatters.MOD_ID, "android_research/android_stuff-${i++}"), 18f, 18f)
+		ICON_PHANTOM_ATTRACTOR = grid.next()
 	}
 }

src/main/kotlin/ru/dbotthepony/mc/otm/client/render/SubSkinGrid.kt

@@ -0,0 +1,53 @@
+package ru.dbotthepony.mc.otm.client.render
+
+@Suppress("unused")
+data class SubSkinGrid(
+	val parent: AbstractSkinElement,
+	val width: Float,
+	val height: Float,
+	val rows: Int = 16,
+	val columns: Int = 16,
+) {
+	var row = 0
+	var column = 0
+
+	val currentX: Float get() = column * width
+	val currentY: Float get() = row * height
+
+	fun skip(): SubSkinGrid {
+		column++
+
+		if (column >= columns) {
+			jump()
+		}
+
+		return this
+	}
+
+	fun jump(): SubSkinGrid {
+		row++
+		column = 0
+		return this
+	}
+
+	fun next(): AbstractSkinElement {
+		val element = parent.subElement(currentX, currentY, width, height)
+		skip()
+		return element
+	}
+
+	fun reset(): SubSkinGrid {
+		row = 0
+		column = 0
+		return this
+	}
+
+	fun seek(row: Int, column: Int): SubSkinGrid {
+		this.row = row
+		this.column = column
+		return this
+	}
+
+	operator fun get(column: Int, row: Int) =
+		parent.subElement(column * width, row * height, width, height)
+}