Add price checker

src/main/kotlin/moe/nea/firmament/events/HandledScreenKeyPressedEvent.kt

@@ -19,10 +19,16 @@
 package moe.nea.firmament.events
 
 import net.minecraft.client.option.KeyBinding
+import moe.nea.firmament.keybindings.IKeyBinding
 
 data class HandledScreenKeyPressedEvent(val keyCode: Int, val scanCode: Int, val modifiers: Int) : FirmamentEvent.Cancellable() {
     companion object : FirmamentEventBus<HandledScreenKeyPressedEvent>()
+
     fun matches(keyBinding: KeyBinding): Boolean {
-        return keyBinding.matchesKey(keyCode, scanCode)
+        return matches(IKeyBinding.minecraft(keyBinding))
+    }
+
+    fun matches(keyBinding: IKeyBinding): Boolean {
+        return keyBinding.matches(keyCode, scanCode, modifiers)
     }
 }

src/main/kotlin/moe/nea/firmament/events/TooltipEvent.kt

@@ -0,0 +1,15 @@
+package moe.nea.firmament.events
+
+import net.minecraft.client.gui.tooltip.Tooltip
+import net.minecraft.client.item.TooltipContext
+import net.minecraft.entity.player.PlayerEntity
+import net.minecraft.item.ItemStack
+
+data class TooltipEvent(
+    val itemStack: ItemStack,
+    val tooltip: Tooltip,
+    val tooltipContext: TooltipContext,
+    val player: PlayerEntity?
+) : FirmamentEvent() {
+    companion object : FirmamentEventBus<TooltipEvent>()
+}