matter capacitor gauge

src/data/kotlin/ru/dbotthepony/mc/otm/datagen/items/ItemModels.kt

@@ -132,9 +132,9 @@ fun addItemModels(provider: MatteryItemModelProvider) {
 	provider.generated(MItems.BATTERY_CREATIVE)
 	provider.generated(MItems.PROCEDURAL_BATTERY, modLocation("item/battery_procedural"))
 
-	provider.generated(MItems.MATTER_CAPACITOR_BASIC, modLocation("item/matter_capacitor_tier1"))
-	provider.generated(MItems.MATTER_CAPACITOR_NORMAL, modLocation("item/matter_capacitor_tier2"))
-	provider.generated(MItems.MATTER_CAPACITOR_DENSE, modLocation("item/matter_capacitor_tier3"))
+	provider.capacitorWithGauge(MItems.MATTER_CAPACITOR_BASIC, baseTexture = modLocation("item/matter_capacitor_tier1"))
+	provider.capacitorWithGauge(MItems.MATTER_CAPACITOR_NORMAL, baseTexture = modLocation("item/matter_capacitor_tier2"))
+	provider.capacitorWithGauge(MItems.MATTER_CAPACITOR_DENSE, baseTexture = modLocation("item/matter_capacitor_tier3"))
 	provider.generated(MItems.MATTER_CAPACITOR_CREATIVE)
 
 	provider.generated(MItems.MachineUpgrades.Basic.BLANK, modLocation("item/machine_upgrade_tier1"))

src/data/kotlin/ru/dbotthepony/mc/otm/datagen/items/MatteryItemModelProvider.kt

@@ -143,6 +143,33 @@ class MatteryItemModelProvider(event: GatherDataEvent) : ItemModelProvider(event
 			.texture("layer1", modLocation("item/machine_upgrade_icon_$upgradeType"))
 	}
 
+	fun capacitorWithGauge(item: Item, fillTextures: Int = 8, baseTexture: ResourceLocation?) = exec {
+		val path = item.registryName!!.path
+		val texture = baseTexture ?: modLocation("item/$path")
+
+		val empty = withExistingParent("${path}_empty", GENERATED)
+			.texture("layer0", texture)
+
+		val basic = withExistingParent(path, GENERATED)
+			.texture("layer0", texture)
+			.texture("layer1", modLocation("item/matter_capacitor_gauge_$fillTextures"))
+			.override()
+				.predicate(modLocation("matter_capacitor_fill"), 0f)
+				.model(empty)
+			.end()
+
+		for (i in 1 .. fillTextures) {
+			val model = withExistingParent("${path}_fill_$i", GENERATED)
+				.texture("layer0", texture)
+				.texture("layer1", modLocation("item/matter_capacitor_gauge_$i"))
+
+			basic.override()
+				.predicate(modLocation("matter_capacitor_fill"), i.toFloat() / fillTextures.toFloat())
+				.model(model)
+			.end()
+		}
+	}
+
 	companion object {
 		val ARMOR_TRIM_MATERIALS = listOf("quartz", "iron", "netherite", "redstone", "copper", "gold", "emerald", "diamond", "lapis", "amethyst")
 		val GENERATED = ResourceLocation("minecraft", "item/generated")

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

@@ -36,6 +36,7 @@ import ru.dbotthepony.mc.otm.block.decorative.CargoCrateBlock
 import ru.dbotthepony.mc.otm.block.decorative.ComputerTerminalBlock
 import ru.dbotthepony.mc.otm.block.decorative.StarChairBlock
 import ru.dbotthepony.mc.otm.block.decorative.TritaniumPressurePlate
+import ru.dbotthepony.mc.otm.capability.MatteryCapability
 import ru.dbotthepony.mc.otm.capability.matteryEnergy
 import ru.dbotthepony.mc.otm.client.MatteryGUI
 import ru.dbotthepony.mc.otm.util.ResourceLocation
@@ -317,6 +318,13 @@ object MRegistry : IBlockItemRegistryAcceptor {
 				val tag = stack.getOrDefault(MDataComponentTypes.Configurator.CONFIGURATION, CompoundTag())
 				if (tag.isEmpty) 0f else 1f
 			}
+
+			for (item in MItems.MATTER_CAPACITORS) {
+				ItemProperties.register(item, ResourceLocation(OverdriveThatMatters.MOD_ID, "matter_capacitor_fill")) { stack, _, _, _ ->
+					val cap = stack.getCapability(MatteryCapability.MATTER_ITEM) ?: return@register 1f
+					(cap.storedMatter / cap.maxStoredMatter).toFloat()
+				}
+			}
 		}
 	}