FAZA 17: 2.5D Minecraft-Style Terrain + Y-Layer Stacking + Custom Sprites

COMPLETED FEATURES:

 Custom Sprite Integration:
- Player, Zombie, Merchant sprites (0.2 scale)
- 11 custom sprites + 5 asset packs loaded
- Auto-transparency processing (white/brown removal)
- Gravestone system with atlas extraction

 2.5D Minecraft-Style Terrain:
- Volumetric blocks with 25px thickness
- Strong left/right side shading (30%/50% darker)
- Minecraft-style texture patterns (grass, dirt, stone)
- Crisp black outlines for definition

 Y-Layer Stacking System:
- GRASS_FULL: All green (elevation > 0.7)
- GRASS_TOP: Green top + brown sides (elevation 0.4-0.7)
- DIRT: All brown (elevation < 0.4)
- Dynamic terrain depth based on height

 Floating Island World Edge:
- Stone cliff walls at map borders
- 2-tile transition zone
- Elevation flattening for cliff drop-off effect
- 100x100 world with defined boundaries

 Performance & Polish:
- Canvas renderer for pixel-perfect sharpness
- CSS image-rendering: crisp-edges
- willReadFrequently optimization
- No Canvas2D warnings

 Technical:
- 3D volumetric trees and rocks
- Hybrid rendering (2.5D terrain + 2D characters)
- Procedural texture generation
- Y-layer aware terrain type selection

src/utils/ObjectPool.js

@@ -0,0 +1,61 @@
+class ObjectPool {
+    constructor(createFn, resetFn) {
+        this.createFn = createFn; // Funkcija za kreiranje novega objekta
+        this.resetFn = resetFn;   // Funkcija za resetiranje objekta pred ponovno uporabo
+        this.active = [];         // Aktivni objekti
+        this.inactive = [];       // Neaktivni objekti (v poolu)
+    }
+
+    // Dobi objekt iz poola
+    get() {
+        let item;
+        if (this.inactive.length > 0) {
+            item = this.inactive.pop();
+        } else {
+            item = this.createFn();
+        }
+
+        // Resetiraj objekt (npr. nastavi visible = true)
+        if (this.resetFn) {
+            this.resetFn(item);
+        }
+
+        this.active.push(item);
+        return item;
+    }
+
+    // Vrni objekt v pool
+    release(item) {
+        const index = this.active.indexOf(item);
+        if (index > -1) {
+            this.active.splice(index, 1);
+            this.inactive.push(item);
+        }
+    }
+
+    // Vrni vse aktivne v pool
+    releaseAll() {
+        while (this.active.length > 0) {
+            const item = this.active.pop();
+            this.inactive.push(item);
+        }
+    }
+
+    // Počisti vse
+    clear() {
+        this.active = [];
+        this.inactive = [];
+    }
+
+    // Info
+    getStats() {
+        return {
+            active: this.active.length,
+            inactive: this.inactive.length,
+            total: this.active.length + this.inactive.length
+        };
+    }
+}
+
+// Ensure global access
+window.ObjectPool = ObjectPool;