add inventory check

items can only be used once

assets/tiled/level_herbst.tmx

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<map version="1.9" tiledversion="1.9.1" orientation="orthogonal" renderorder="right-down" width="64" height="64" tilewidth="64" tileheight="64" infinite="0" nextlayerid="13" nextobjectid="7">
+<map version="1.9" tiledversion="1.9.1" orientation="orthogonal" renderorder="right-down" width="64" height="64" tilewidth="64" tileheight="64" infinite="0" nextlayerid="13" nextobjectid="9">
  <properties>
   <property name="description" value="01.10.2001"/>
   <property name="id" type="int" value="1"/>
@@ -504,6 +504,16 @@
     <property name="item" value="key"/>
    </properties>
   </object>
+  <object id="7" x="1600" y="2304" width="64" height="64">
+   <properties>
+    <property name="item" value="compass"/>
+   </properties>
+  </object>
+  <object id="8" x="1664" y="2368" width="64" height="64">
+   <properties>
+    <property name="item" value="compass"/>
+   </properties>
+  </object>
  </objectgroup>
  <objectgroup id="8" name="Spawnpoints">
   <object id="1" x="2081" y="2330">

core/src/main/kotlin/com/last/commit/Player.kt

@@ -22,10 +22,6 @@ class Player(private val textureRegion: TextureRegion, private val gameState: Ga
         position = Vector2()
     }
 
-    fun addItemToInventory(name: String) {
-        gameState.inventory.add(name)
-    }
-
     fun getX(): Float {
         return position.x
     }

core/src/main/kotlin/com/last/commit/inventory/Inventory.kt

@@ -1,21 +1,33 @@
 package com.last.commit.inventory
 
-class Inventory {
+import com.last.commit.GameState
+
+class Inventory() {
 
     val items: MutableList<InventoryItem> = ArrayList()
     public var updated = false
 
     /**
      * @param name the name of the subtexture loaded from xml
+     * @return wether the item was added
      */
-    fun add(name: String) {
-        if (this.items.size < 8) {
-            items.add(InventoryItem(name))
-            this.updated = true
+    fun add(name: String, state: GameState): Boolean {
+        if (this.items.find { it.name == name } == null) {
+            if (this.items.size < 8) {
+                items.add(InventoryItem(name))
+                this.updated = true
+
+                return true
+            }
+        } else {
+            // Item is already in inventory
+            state.dialogStage.setTexts("You already have this item.")
+            state.dialogStage.show()
         }
+        return false
     }
-    
+
     fun remove(name: String) {
-        items.removeIf() {item -> item.name == name}
+        items.removeIf() { item -> item.name == name }
     }
 }

core/src/main/kotlin/com/last/commit/map/Collectible.kt

@@ -24,8 +24,9 @@ class Collectible(
     override fun interact(otherCollider: Rectangle, state: GameState) {
         println("Interacting with item $name")
         state.soundEngine.play(GameSoundEffect.GRAB)
-        state.inventory.add(this.name)
-        state.map?.collectibles?.remove(this)
+        if (state.inventory.add(this.name, state)) {
+            state.map?.collectibles?.remove(this)
+        }
     }
 
     override fun canInteract(state: GameState): Boolean {

core/src/main/kotlin/com/last/commit/screen/FirstScreen.kt

@@ -63,7 +63,6 @@ class FirstScreen(private val parent: Game) : TimeTravelScreen() {
         uiStage = UIStage("sprites/genericItems_spritesheet_colored", gameState)
         shapeRenderer.setAutoShapeType(true)
 
-        player.addItemToInventory("drill")
         gameState.soundEngine.play(GameMusic.WORLD_MUSIC, 0.25f)
 
         viewport.camera = camera

core/src/main/kotlin/com/last/commit/stages/DialogStage.kt

@@ -76,6 +76,10 @@ class DialogStage(skin: Skin?) : Stage() {
         return true
     }
 
+    override fun touchDown(screenX: Int, screenY: Int, pointer: Int, button: Int): Boolean {
+        return keyDown(Input.Keys.SPACE)
+    }
+
     private operator fun next() {
         area.clear()
         area.text = texts.first()