core/src/ru/deadsoftware/cavedroid/game/input/handler/mouse/CreativeInventoryScrollMouseInputHandler.kt

   1 package ru.deadsoftware.cavedroid.game.input.handler.mouse
   2
   3 import com.badlogic.gdx.math.MathUtils
   4 import ru.deadsoftware.cavedroid.game.GameItemsHolder
   5 import ru.deadsoftware.cavedroid.game.GameScope
   6 import ru.deadsoftware.cavedroid.game.GameUiWindow
   7 import ru.deadsoftware.cavedroid.game.windows.GameWindowsManager
   8 import ru.deadsoftware.cavedroid.game.input.IGameInputHandler
   9 import ru.deadsoftware.cavedroid.game.input.action.MouseInputAction
  10 import ru.deadsoftware.cavedroid.game.input.action.keys.MouseInputActionKey
  11 import ru.deadsoftware.cavedroid.game.input.isInsideWindow
  12 import ru.deadsoftware.cavedroid.misc.Assets
  13 import javax.inject.Inject
  14 import kotlin.math.abs
  15
  16 @GameScope
  17 class CreativeInventoryScrollMouseInputHandler @Inject constructor(
  18     private val gameWindowsManager: GameWindowsManager,
  19     private val gameItemsHolder: GameItemsHolder,
  20 ) : IGameInputHandler<MouseInputAction> {
  21
  22     private val creativeInventoryTexture get() = requireNotNull(Assets.textureRegions["creative"])
  23
  24     private var dragStartY = 0f
  25
  26     override fun checkConditions(action: MouseInputAction): Boolean {
  27         return gameWindowsManager.getCurrentWindow() == GameUiWindow.CREATIVE_INVENTORY &&
  28                 (gameWindowsManager.isDragging || isInsideWindow(action, creativeInventoryTexture)) &&
  29                 (checkStartDragConditions(action) || checkEndDragConditions(action) ||
  30                         checkDragConditions(action) || action.actionKey is MouseInputActionKey.Scroll)
  31
  32     }
  33
  34     private fun checkStartDragConditions(action: MouseInputAction): Boolean {
  35         return action.actionKey is MouseInputActionKey.Left &&
  36                 !action.actionKey.touchUp && !gameWindowsManager.isDragging
  37     }
  38
  39     private fun checkEndDragConditions(action: MouseInputAction): Boolean {
  40         return action.actionKey is MouseInputActionKey.Left &&
  41                 action.actionKey.touchUp && gameWindowsManager.isDragging
  42     }
  43
  44     private fun checkDragConditions(action: MouseInputAction): Boolean {
  45         return action.actionKey is MouseInputActionKey.Dragged &&
  46                 abs(action.screenY - dragStartY) >= DRAG_SENSITIVITY
  47     }
  48
  49     private fun clampScrollAmount() {
  50         gameWindowsManager.creativeScrollAmount =
  51             MathUtils.clamp(gameWindowsManager.creativeScrollAmount, 0, gameItemsHolder.getMaxCreativeScrollAmount())
  52     }
  53
  54     private fun handleStartOrEndDrag(action: MouseInputAction) {
  55         if (gameWindowsManager.isDragging) {
  56             gameWindowsManager.isDragging = false
  57         } else {
  58             dragStartY = action.screenY
  59         }
  60     }
  61
  62     private fun handleDrag(action: MouseInputAction) {
  63         gameWindowsManager.isDragging = true
  64         gameWindowsManager.creativeScrollAmount += ((dragStartY - action.screenY) / DRAG_SENSITIVITY).toInt()
  65         clampScrollAmount()
  66         dragStartY = action.screenY
  67     }
  68
  69     private fun handleScroll(action: MouseInputAction) {
  70         gameWindowsManager.creativeScrollAmount += (action.actionKey as MouseInputActionKey.Scroll).amountY.toInt()
  71         clampScrollAmount()
  72     }
  73
  74     override fun handle(action: MouseInputAction) {
  75         when (action.actionKey) {
  76             is MouseInputActionKey.Left -> handleStartOrEndDrag(action)
  77             is MouseInputActionKey.Dragged -> handleDrag(action)
  78             is MouseInputActionKey.Scroll -> handleScroll(action)
  79             else -> return
  80         }
  81     }
  82
  83     companion object {
  84         private const val DRAG_SENSITIVITY = 16f
  85     }
  86 }