Cleaned up fuel duration handling, fixed some fuel items not working in furnaces

src/pocketmine/block/Block.php

@@ -718,6 +718,14 @@ class Block extends Position implements BlockIds, Metadatable{
 		return $this->getHardness() !== -1;
 	}
 
+	/**
+	 * Returns the time in ticks which the block will fuel a furnace for.
+	 * @return int
+	 */
+	public function getFuelTime() : int{
+		return 0;
+	}
+
 	/**
 	 * Returns the Block on the side $side, works like Vector3::side()
 	 *

src/pocketmine/block/Bookshelf.php

@@ -52,4 +52,8 @@ class Bookshelf extends Solid{
 		];
 	}
 
+	public function getFuelTime() : int{
+		return 300;
+	}
+
 }

src/pocketmine/block/Chest.php

@@ -174,4 +174,8 @@ class Chest extends Transparent{
 			[$this->id, 0, 1],
 		];
 	}
+
+	public function getFuelTime() : int{
+		return 300;
+	}
 }

src/pocketmine/block/Coal.php

@@ -55,4 +55,8 @@ class Coal extends Solid{
 			return [];
 		}
 	}
+
+	public function getFuelTime() : int{
+		return 16000;
+	}
 }

src/pocketmine/block/CraftingTable.php

@@ -60,4 +60,8 @@ class CraftingTable extends Solid{
 			[$this->id, 0, 1],
 		];
 	}
+
+	public function getFuelTime() : int{
+		return 300;
+	}
 }

src/pocketmine/block/DaylightSensor.php

@@ -38,4 +38,8 @@ class DaylightSensor extends Transparent{
 	public function getHardness(){
 		return 0.2;
 	}
+
+	public function getFuelTime() : int{
+		return 300;
+	}
 }

src/pocketmine/block/Fence.php

@@ -88,4 +88,8 @@ class Fence extends Transparent{
 		return ($block instanceof Fence or $block instanceof FenceGate) ? true : $block->isSolid() and !$block->isTransparent();
 	}
 
+	public function getFuelTime() : int{
+		return 300;
+	}
+
 }

src/pocketmine/block/FenceGate.php

@@ -92,4 +92,8 @@ class FenceGate extends Transparent{
 		$this->level->addSound(new DoorSound($this));
 		return true;
 	}
+
+	public function getFuelTime() : int{
+		return 300;
+	}
 }

src/pocketmine/block/NoteBlock.php

@@ -34,4 +34,8 @@ class NoteBlock extends Solid{
 	public function getName(){
 		return "Note Block";
 	}
+
+	public function getFuelTime() : int{
+		return 300;
+	}
 }

src/pocketmine/block/Planks.php

@@ -59,4 +59,8 @@ class Planks extends Solid{
 		return $names[$this->meta & 0x07] ?? "Unknown";
 	}
 
+	public function getFuelTime() : int{
+		return 300;
+	}
+
 }

src/pocketmine/block/Sapling.php

@@ -112,4 +112,8 @@ class Sapling extends Flowable{
 			[$this->id, $this->meta & 0x07, 1],
 		];
 	}
+
+	public function getFuelTime() : int{
+		return 100;
+	}
 }

src/pocketmine/block/StoneSlab.php

@@ -75,4 +75,8 @@ class StoneSlab extends WoodenSlab{
 			return [];
 		}
 	}
+
+	public function getFuelTime() : int{
+		return 0;
+	}
 }

src/pocketmine/block/Trapdoor.php

@@ -156,4 +156,8 @@ class Trapdoor extends Transparent{
 	public function getToolType(){
 		return Tool::TYPE_AXE;
 	}
+
+	public function getFuelTime() : int{
+		return 300;
+	}
 }

src/pocketmine/block/Wood.php

@@ -78,4 +78,8 @@ class Wood extends Solid{
 	public function getToolType(){
 		return Tool::TYPE_AXE;
 	}
+
+	public function getFuelTime() : int{
+		return 300;
+	}
 }

src/pocketmine/block/WoodenPressurePlate.php

@@ -34,4 +34,8 @@ class WoodenPressurePlate extends StonePressurePlate{
 	public function getName(){
 		return "Wooden Pressure Plate";
 	}
+
+	public function getFuelTime() : int{
+		return 300;
+	}
 }

src/pocketmine/block/WoodenSlab.php

@@ -134,4 +134,8 @@ class WoodenSlab extends Transparent{
 			[$this->id, $this->meta & 0x07, 1],
 		];
 	}
+
+	public function getFuelTime() : int{
+		return 300;
+	}
 }