feat: firmament api

1 files changed, 48 insertions, 0 deletions

diff --git a/src/main/kotlin/impl/v1/FirmamentAPIImpl.kt b/src/main/kotlin/impl/v1/FirmamentAPIImpl.kt
new file mode 100644
index 0000000..d5fc0de
--- /dev/null
+++ b/src/main/kotlin/impl/v1/FirmamentAPIImpl.kt
@@ -0,0 +1,48 @@
+package moe.nea.firmament.impl.v1
+
+import com.mojang.blaze3d.platform.InputConstants
+import java.util.Collections
+import java.util.Optional
+import net.fabricmc.loader.api.FabricLoader
+import kotlin.jvm.optionals.getOrNull
+import moe.nea.firmament.Firmament
+import moe.nea.firmament.api.v1.FirmamentAPI
+import moe.nea.firmament.api.v1.FirmamentExtension
+import moe.nea.firmament.api.v1.FirmamentItemWidget
+import moe.nea.firmament.util.MC
+import moe.nea.firmament.util.intoOptional
+
+object FirmamentAPIImpl : FirmamentAPI() {
+	@JvmField
+	val INSTANCE: FirmamentAPI = FirmamentAPIImpl
+
+	private val _extensions = mutableListOf<FirmamentExtension>()
+	override fun getExtensions(): List<FirmamentExtension> {
+		return Collections.unmodifiableList(_extensions)
+	}
+
+	override fun getHoveredItemWidget(): Optional<FirmamentItemWidget> {
+		val mouse = MC.instance.mouseHandler
+		val window = MC.window
+		val xpos = mouse.getScaledXPos(window)
+		val ypos = mouse.getScaledYPos(window)
+		val widget = MC.screen
+			?.getChildAt(xpos, ypos)
+			?.getOrNull()
+		if (widget is FirmamentItemWidget) return widget.intoOptional()
+		return Optional.empty()
+	}
+
+	fun loadExtensions() {
+		for (container in FabricLoader.getInstance()
+			.getEntrypointContainers("firmament:v1", FirmamentExtension::class.java)) {
+			Firmament.logger.info("Loading extension ${container.entrypoint} from ${container.provider.metadata.name}")
+			loadExtension(container.entrypoint)
+		}
+		extensions.forEach { it.onLoad() }
+	}
+
+	fun loadExtension(entrypoint: FirmamentExtension) {
+		_extensions.add(entrypoint)
+	}
+}