3 files changed, 131 insertions, 0 deletions
diff --git a/src/main/kotlin/com/ambientaddons/gui/GuiElement.kt b/src/main/kotlin/com/ambientaddons/gui/GuiElement.kt
new file mode 100644
index 0000000..c398464
--- /dev/null
+++ b/src/main/kotlin/com/ambientaddons/gui/GuiElement.kt
@@ -0,0 +1,44 @@
+package com.ambientaddons.gui
+
+import AmbientAddons.Companion.persistentData
+import com.ambientaddons.utils.render.OverlayUtils
+import gg.essential.universal.UResolution
+import net.minecraft.client.renderer.GlStateManager
+import java.awt.Color
+
+
+class GuiElement(val name: String, private val width: Int, private val height: Int) {
+    var position = persistentData.positions[name] ?: run {
+        persistentData.positions[name] = GuiPosition(0.0, 0.0, 1.0)
+        persistentData.positions[name]!!
+    }
+
+    fun isInsideElement(mouseX: Double, mouseY: Double): Boolean {
+        val renderWidth = width * position.scale
+        val renderHeight = height * position.scale
+        val xInside = mouseX in (position.x - padding * renderWidth)..(position.x + renderWidth * (1 + padding))
+        val yInside = mouseY in (position.y - padding * renderHeight)..(position.y + renderHeight * (1 + padding))
+        return xInside && yInside
+    }
+
+    fun coerceIntoScreen() {
+        val xRange = 0.0..(UResolution.scaledWidth - width * position.scale)
+        val yRange = 0.0..(UResolution.scaledHeight - height * position.scale)
+        position.x = if (xRange.isEmpty()) 0.0 else position.x.coerceIn(xRange)
+        position.y = if (yRange.isEmpty()) 0.0 else position.y.coerceIn(yRange)
+    }
+
+    fun draw(mouseX: Double, mouseY: Double) {
+        GlStateManager.pushMatrix()
+        val renderWidth = width * position.scale
+        val renderHeight = height * position.scale
+        GlStateManager.translate(position.x - padding * renderWidth, position.y - padding * renderWidth, 400.0)
+        val color = if (isInsideElement(mouseX, mouseY)) Color(255, 255, 255, 128) else Color(128, 128, 128, 128)
+        OverlayUtils.renderRect(0.0, 0.0,  renderWidth * (1 + padding * 2), renderHeight * (1 + padding * 2), color)
+        GlStateManager.popMatrix()
+    }
+
+    companion object {
+        private const val padding = 0.05
+    }
+}
+\ No newline at end of file
diff --git a/src/main/kotlin/com/ambientaddons/gui/GuiPosition.kt b/src/main/kotlin/com/ambientaddons/gui/GuiPosition.kt
new file mode 100644
index 0000000..50b3f07
--- /dev/null
+++ b/src/main/kotlin/com/ambientaddons/gui/GuiPosition.kt
@@ -0,0 +1,10 @@
+package com.ambientaddons.gui
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class GuiPosition (
+    var x: Double,
+    var y: Double,
+    var scale: Double
+)
+\ No newline at end of file
diff --git a/src/main/kotlin/com/ambientaddons/gui/MoveGui.kt b/src/main/kotlin/com/ambientaddons/gui/MoveGui.kt
new file mode 100644
index 0000000..33c96e7
--- /dev/null
+++ b/src/main/kotlin/com/ambientaddons/gui/MoveGui.kt
@@ -0,0 +1,77 @@
+package com.ambientaddons.gui
+
+import AmbientAddons.Companion.guiElements
+import AmbientAddons.Companion.persistentData
+import com.ambientaddons.utils.Alignment
+import com.ambientaddons.utils.dungeon.TextStyle
+import com.ambientaddons.utils.render.OverlayUtils
+import gg.essential.universal.UResolution
+import net.minecraft.client.gui.GuiScreen
+import net.minecraft.client.renderer.GlStateManager
+import org.lwjgl.input.Mouse
+import org.lwjgl.opengl.Display
+import java.awt.Color
+
+class MoveGui : GuiScreen() {
+    private var currentElement: GuiElement? = null
+    private var clickOffsetX = 0.0
+    private var clickOffsetY = 0.0
+
+    override fun drawScreen(x: Int, y: Int, partialTicks: Float) {
+        super.drawScreen(x, y, partialTicks)
+        val (mouseX, mouseY) = getMouseCoordinates()
+        OverlayUtils.renderRect(
+            0.0, 0.0, UResolution.scaledWidth.toDouble(), UResolution.scaledHeight.toDouble(), Color(0, 0, 0, 64)
+        )
+        GlStateManager.pushMatrix()
+        GlStateManager.translate(UResolution.scaledWidth / 2.0, UResolution.scaledHeight / 2.0, 300.0)
+        OverlayUtils.drawString(0, 10, "Drag to move GUI elements.", TextStyle.Outline, Alignment.Center)
+        OverlayUtils.drawString(0, 20, "Scroll inside elements to scale.", TextStyle.Outline, Alignment.Center)
+        GlStateManager.popMatrix()
+        guiElements.forEach { it.draw(mouseX, mouseY) }
+    }
+
+    override fun mouseClicked(x: Int, y: Int, mouseButton: Int) {
+        val (mouseX, mouseY) = getMouseCoordinates()
+        currentElement = guiElements.find { it.isInsideElement(mouseX, mouseY) }?.apply {
+            clickOffsetX = mouseX - position.x
+            clickOffsetY = mouseY - position.y
+        }
+        super.mouseClicked(x, y, mouseButton)
+    }
+
+    override fun mouseClickMove(x: Int, y: Int, clickedMouseButton: Int, timeSinceLastClick: Long) {
+        currentElement?.apply {
+            val (mouseX, mouseY) = getMouseCoordinates()
+            position.x = mouseX - clickOffsetX
+            position.y = mouseY - clickOffsetY
+            coerceIntoScreen()
+        }
+        super.mouseClickMove(x, y, clickedMouseButton, timeSinceLastClick)
+    }
+
+    override fun handleMouseInput() {
+        super.handleMouseInput()
+        val (mouseX, mouseY) = getMouseCoordinates()
+        currentElement = guiElements.find { it.isInsideElement(mouseX, mouseY) }?.apply {
+            clickOffsetX = mouseX - position.x
+            clickOffsetY = mouseY - position.y
+            val scrollAmount = Mouse.getEventDWheel()
+            val oldScale = position.scale
+            val newScale = (position.scale + scrollAmount / 7200.0).coerceAtLeast(0.1)
+            position.x = mouseX + (newScale / oldScale) * (position.x - mouseX)
+            position.y = mouseY + (newScale / oldScale) * (position.y - mouseY)
+            position.scale = newScale
+            coerceIntoScreen()
+        }
+    }
+    
+    private fun getMouseCoordinates(): Pair<Double, Double> {
+        val mouseX = Mouse.getX() / UResolution.scaleFactor
+        val mouseY = (Display.getHeight() - Mouse.getY()) / UResolution.scaleFactor
+        return Pair(mouseX, mouseY)
+    }
+
+    override fun onGuiClosed() = persistentData.save()
+
+}
+\ No newline at end of file