hud: protection

src/main/java/de/bixilon/minosoft/data/entities/entities/Entity.kt

@@ -33,6 +33,7 @@ import de.bixilon.minosoft.data.registries.enchantment.Enchantment
 import de.bixilon.minosoft.data.registries.entities.EntityType
 import de.bixilon.minosoft.data.registries.fluid.FlowableFluid
 import de.bixilon.minosoft.data.registries.fluid.Fluid
+import de.bixilon.minosoft.data.registries.items.armor.ArmorItem
 import de.bixilon.minosoft.data.registries.particle.data.BlockParticleData
 import de.bixilon.minosoft.data.text.ChatComponent
 import de.bixilon.minosoft.gui.rendering.input.camera.EntityPositionInfo
@@ -585,6 +586,22 @@ abstract class Entity(
         }
     }
 
+    val protectionLevel: Float
+        get() {
+            var protectionLevel = 0.0f
+
+            for (equipment in equipment.toSynchronizedMap().values) {
+                val item = equipment.item
+
+                if (item is ArmorItem) {
+                    // could also be a pumpkin or just trash
+                    protectionLevel += item.protection
+                }
+            }
+
+            return protectionLevel
+        }
+
     companion object {
         private val BELOW_POSITION_MINUS = Vec3(0, 0.20000000298023224f, 0)
     }

src/main/java/de/bixilon/minosoft/gui/rendering/gui/hud/elements/hotbar/HotbarElement.kt

@@ -30,6 +30,7 @@ class HotbarElement(hudRenderer: HUDRenderer) : Element(hudRenderer) {
     private val experience = HotbarExperienceBarElement(hudRenderer)
     private val health = HotbarHealthElement(hudRenderer)
     private val hunger = HotbarHungerElement(hudRenderer)
+    private val protection = HotbarProtectionElement(hudRenderer)
 
     private val topLeft = RowLayout(hudRenderer, HorizontalAlignments.LEFT, 1) // contains health, armor, etc
     private val topRight = RowLayout(hudRenderer, HorizontalAlignments.RIGHT, 1) // contains hunger, air
@@ -43,11 +44,13 @@ class HotbarElement(hudRenderer: HUDRenderer) : Element(hudRenderer) {
     override var cacheEnabled: Boolean = false // ToDo: Cache correctly
 
     init {
-        topLeft += health
         topLeft.parent = this
+        topRight.parent = this
+
+        topLeft += protection
+        topLeft += health
 
         topRight += hunger
-        topRight.parent = this
 
         silentApply()
     }

src/main/java/de/bixilon/minosoft/gui/rendering/gui/hud/elements/hotbar/HotbarHealthElement.kt

@@ -146,7 +146,7 @@ class HotbarHealthElement(hudRenderer: HUDRenderer) : Element(hudRenderer) {
     private var rows = 0
 
     override fun forceRender(offset: Vec2i, z: Int, consumer: GUIVertexConsumer): Int {
-        // ToDo: Damage animation, regeneration, caching
+        // ToDo: Damage animation, regeneration, caching, stacking
         for (heart in 0 until totalMaxHearts) {
             val row = heart / HEARTS_PER_ROW
             val column = heart % HEARTS_PER_ROW

src/main/java/de/bixilon/minosoft/gui/rendering/gui/hud/elements/hotbar/HotbarProtectionElement.kt

@@ -0,0 +1,77 @@
+/*
+ * Minosoft
+ * Copyright (C) 2021 Moritz Zwerger
+ *
+ * This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * This software is not affiliated with Mojang AB, the original developer of Minecraft.
+ */
+
+package de.bixilon.minosoft.gui.rendering.gui.hud.elements.hotbar
+
+import de.bixilon.minosoft.gui.rendering.gui.elements.Element
+import de.bixilon.minosoft.gui.rendering.gui.elements.primitive.ImageElement
+import de.bixilon.minosoft.gui.rendering.gui.hud.HUDRenderer
+import de.bixilon.minosoft.gui.rendering.gui.mesh.GUIVertexConsumer
+import de.bixilon.minosoft.gui.rendering.util.vec.Vec2Util.EMPTY
+import glm_.vec2.Vec2i
+
+class HotbarProtectionElement(hudRenderer: HUDRenderer) : Element(hudRenderer) {
+    private val emptyProtection = hudRenderer.atlasManager["minecraft:empty_protection"]!!
+    private val halfProtection = hudRenderer.atlasManager["minecraft:half_protection"]!!
+    private val fullProtection = hudRenderer.atlasManager["minecraft:full_protection"]!!
+
+    init {
+        silentApply()
+    }
+
+    private var protection = 0.0f
+
+    override fun forceRender(offset: Vec2i, z: Int, consumer: GUIVertexConsumer): Int {
+        if (protection <= 0.0f) {
+            return 0
+        }
+
+        var protectionLeft = protection
+
+        for (i in 0 until 10) {
+            val atlasElement = when {
+                protectionLeft <= 0.0f -> emptyProtection
+                protectionLeft < 1.0f -> halfProtection
+                else -> fullProtection
+            }
+
+            val image = ImageElement(hudRenderer, atlasElement)
+
+            image.render(offset + Vec2i(i * ARMOR_SIZE.x, 0), z, consumer)
+
+            protectionLeft -= 1.0f
+        }
+
+        return 1
+    }
+
+    override fun silentApply() {
+        val protection = hudRenderer.connection.player.protectionLevel // ToDo: Check for equipment change
+
+        if (this.protection == protection) {
+            return
+        }
+
+        size = if (protection <= 0.0f) {
+            Vec2i.EMPTY
+        } else {
+            SIZE
+        }
+        cacheUpToDate = false
+    }
+
+    companion object {
+        private val ARMOR_SIZE = Vec2i(8, 9)
+        private val SIZE = Vec2i(10 * ARMOR_SIZE.x, ARMOR_SIZE.y)
+    }
+}

src/main/resources/assets/minosoft/mapping/atlas.json

@@ -435,5 +435,26 @@
       "start": [0, 89],
       "end": [182, 94]
     }
+  },
+  "minecraft:empty_protection": {
+    "0": {
+      "texture": "minecraft:textures/gui/icons.png",
+      "start": [16, 9],
+      "end": [25, 18]
+    }
+  },
+  "minecraft:half_protection": {
+    "0": {
+      "texture": "minecraft:textures/gui/icons.png",
+      "start": [25, 9],
+      "end": [34, 18]
+    }
+  },
+  "minecraft:full_protection": {
+    "0": {
+      "texture": "minecraft:textures/gui/icons.png",
+      "start": [34, 9],
+      "end": [43, 18]
+    }
   }
 }