1 files changed, 72 insertions, 0 deletions
diff --git a/src/main/kotlin/util/customgui/CustomGui.kt b/src/main/kotlin/util/customgui/CustomGui.kt
new file mode 100644
index 0000000..f9094b2
--- /dev/null
+++ b/src/main/kotlin/util/customgui/CustomGui.kt
@@ -0,0 +1,72 @@
+
+package moe.nea.firmament.util.customgui
+
+import me.shedaniel.math.Rectangle
+import net.minecraft.client.gui.DrawContext
+import net.minecraft.screen.slot.Slot
+import moe.nea.firmament.annotations.Subscribe
+import moe.nea.firmament.events.HandledScreenPushREIEvent
+
+abstract class CustomGui {
+
+    abstract fun getBounds(): List<Rectangle>
+
+    open fun moveSlot(slot: Slot) {
+        // TODO: return a Pair maybe? worth an investigation
+    }
+
+    companion object {
+        @Subscribe
+        fun onExclusionZone(event: HandledScreenPushREIEvent) {
+            val customGui = event.screen.customGui ?: return
+            event.rectangles.addAll(customGui.getBounds())
+        }
+    }
+
+    open fun render(
+        drawContext: DrawContext,
+        delta: Float,
+        mouseX: Int,
+        mouseY: Int
+    ) {
+    }
+
+    open fun mouseClick(mouseX: Double, mouseY: Double, button: Int): Boolean {
+        return false
+    }
+
+    open fun afterSlotRender(context: DrawContext, slot: Slot) {}
+    open fun beforeSlotRender(context: DrawContext, slot: Slot) {}
+    open fun mouseScrolled(mouseX: Double, mouseY: Double, horizontalAmount: Double, verticalAmount: Double): Boolean {
+        return false
+    }
+
+    open fun isClickOutsideBounds(mouseX: Double, mouseY: Double): Boolean {
+        return getBounds().none { it.contains(mouseX, mouseY) }
+    }
+
+    open fun isPointWithinBounds(
+        x: Int,
+        y: Int,
+        width: Int,
+        height: Int,
+        pointX: Double,
+        pointY: Double,
+    ): Boolean {
+        return getBounds().any { it.contains(pointX, pointY) } &&
+            Rectangle(x, y, width, height).contains(pointX, pointY)
+    }
+
+    open fun isPointOverSlot(slot: Slot, xOffset: Int, yOffset: Int, pointX: Double, pointY: Double): Boolean {
+        return isPointWithinBounds(slot.x + xOffset, slot.y + yOffset, 16, 16, pointX, pointY)
+    }
+
+    open fun onInit() {}
+    open fun shouldDrawForeground(): Boolean {
+        return true
+    }
+
+    open fun onVoluntaryExit(): Boolean {
+        return true
+    }
+}