From 7139ddb3cfe5d5f9d6a13a132c97b562979d0da4 Mon Sep 17 00:00:00 2001
From: bluefireoly <bluefireolymp@gmail.com>
Date: Sun, 27 Sep 2020 18:35:55 +0200
Subject: [PATCH] Added new page change effects

---
 .../inventory/InventoryGUIPageChange.kt       | 101 ++++++++++++++----
 1 file changed, 82 insertions(+), 19 deletions(-)

diff --git a/src/main/kotlin/net/axay/kspigot/inventory/InventoryGUIPageChange.kt b/src/main/kotlin/net/axay/kspigot/inventory/InventoryGUIPageChange.kt
index 1d2d0a5f..e5a9020f 100644
--- a/src/main/kotlin/net/axay/kspigot/inventory/InventoryGUIPageChange.kt
+++ b/src/main/kotlin/net/axay/kspigot/inventory/InventoryGUIPageChange.kt
@@ -1,5 +1,6 @@
 package net.axay.kspigot.inventory
 
+import net.axay.kspigot.main.KSpigot
 import net.axay.kspigot.runnables.task
 
 abstract class InventoryGUIPageChangeCalculator {
@@ -21,7 +22,11 @@ abstract class InventoryGUIPageChangeCalculator {
 }
 
 enum class InventoryGUIPageChangeEffect {
-    INSTANT, SLIDE_HORIZONTALLY
+    INSTANT,
+    SLIDE_HORIZONTALLY,
+    SLIDE_VERTICALLY,
+    SWIPE_HORIZONTALLY,
+    SWIPE_VERTICALLY,
 }
 
 class InventoryGUIPageChanger(private val effect: InventoryGUIPageChangeEffect) {
@@ -29,40 +34,98 @@ class InventoryGUIPageChanger(private val effect: InventoryGUIPageChangeEffect)
     fun changePage(gui: InventoryGUI, fromPage: Int, toPage: Int) {
         when (effect) {
 
+            InventoryGUIPageChangeEffect.INSTANT -> gui.loadPage(toPage)
+
             InventoryGUIPageChangeEffect.SLIDE_HORIZONTALLY -> {
 
                 val width = gui.data.inventoryGUIType.dimensions.width
 
-                val ifInverted = fromPage >= toPage
-
-                var currentOffset = 1
-                gui.data.plugin.task(
-                        sync = true,
-                        period = 1,
-                        howOften = width.toLong()
-                ) {
-
+                changePageEffect(gui.data.plugin, fromPage, toPage, width) { currentOffset, ifInverted ->
                     if (ifInverted) {
-                        gui.loadPage(fromPage, currentOffset)
-                        gui.loadPage(toPage, - (width - currentOffset))
+                        gui.loadPage(fromPage, offsetVertically = currentOffset)
+                        gui.loadPage(toPage, offsetVertically = -(width - currentOffset))
                     } else {
-                        gui.loadPage(fromPage, -currentOffset)
-                        gui.loadPage(toPage, width - currentOffset)
+                        gui.loadPage(fromPage, offsetVertically = -currentOffset)
+                        gui.loadPage(toPage, offsetVertically = width - currentOffset)
                     }
-
-                    currentOffset++
-
                 }
 
             }
 
-            InventoryGUIPageChangeEffect.INSTANT -> {
+            InventoryGUIPageChangeEffect.SLIDE_VERTICALLY -> {
 
-                gui.loadPage(toPage)
+                val height = gui.data.inventoryGUIType.dimensions.heigth
+
+                changePageEffect(gui.data.plugin, fromPage, toPage, height) { currentOffset, ifInverted ->
+                    if (ifInverted) {
+                        gui.loadPage(fromPage, offsetVertically = currentOffset)
+                        gui.loadPage(toPage, offsetVertically = -(height - currentOffset))
+                    } else {
+                        gui.loadPage(fromPage, offsetVertically = -currentOffset)
+                        gui.loadPage(toPage, offsetVertically = height - currentOffset)
+                    }
+                }
+
+            }
+
+            InventoryGUIPageChangeEffect.SWIPE_HORIZONTALLY -> {
+
+                val width = gui.data.inventoryGUIType.dimensions.width
+
+                changePageEffect(gui.data.plugin, fromPage, toPage, width) { currentOffset, ifInverted ->
+                    if (ifInverted) {
+                        gui.loadPage(toPage, offsetVertically = -(width - currentOffset))
+                    } else {
+                        gui.loadPage(toPage, offsetVertically = width - currentOffset)
+                    }
+                }
+
+            }
+
+            InventoryGUIPageChangeEffect.SWIPE_VERTICALLY -> {
+
+                val height = gui.data.inventoryGUIType.dimensions.heigth
+
+                changePageEffect(gui.data.plugin, fromPage, toPage, height) { currentOffset, ifInverted ->
+                    if (ifInverted) {
+                        gui.loadPage(toPage, offsetVertically = -(height - currentOffset))
+                    } else {
+                        gui.loadPage(toPage, offsetVertically = height - currentOffset)
+                    }
+                }
 
             }
 
         }
     }
 
+    companion object {
+
+        private inline fun changePageEffect(
+                kSpigot: KSpigot,
+                fromPage: Int,
+                toPage: Int,
+                doFor: Int,
+                crossinline effect: (currentOffset: Int, ifInverted: Boolean) -> Unit,
+        ) {
+
+            val ifInverted = fromPage >= toPage
+
+            var currentOffset = 1
+            kSpigot.task(
+                    sync = true,
+                    period = 1,
+                    howOften = doFor.toLong()
+            ) {
+
+                effect.invoke(currentOffset, ifInverted)
+
+                currentOffset++
+
+            }
+
+        }
+
+    }
+
 }
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