Furnace minecarts pushing other minecarts and excess fuel dropping from them

src/main/java/xyz/pixelatedw/finalbeta/ModConfig.java

@@ -44,6 +44,8 @@ public class ModConfig {
 			"Maximum allowed speed for minecarts\nVanilla default is 0.4");
 	public static final Option<Double> MINECART_POWERED_BOOST = make("Powered rails speed boost", 1.15,
 			"Extra speed modifier when minecarts go over powered rails\nVanilla default is 1.0");
+	public static final Option<Boolean> FURNACE_MINECART_PUSH = make("Enable furnace minecarts push", true,
+			"Enables furance minecarts to push forward the first minecart it comes in contact with");
 	
 	public static final Option<Boolean> FIX_BOW_MODEL = make("Fix bow model", true,
 			"Makes the box model held by players and skeletons bigger and facing forward");

src/main/java/xyz/pixelatedw/finalbeta/WyHelper.java

@@ -86,6 +86,10 @@ public class WyHelper {
 	public static float clamp(float val, float min, float max) {
 		return val < min ? min : Math.min(val, max);
 	}
+	
+	public static int clamp(int val, int min, int max) {
+		return val < min ? min : Math.min(val, max);
+	}
 
 	public static void cheatCommand(Player player) {
 //		player.dropItem(new ItemInstance(Tile.LADDER, 64));

src/main/java/xyz/pixelatedw/finalbeta/mixin/MinecartMixin.java

@@ -12,6 +12,7 @@ import net.minecraft.entity.Entity;
 import net.minecraft.entity.ItemEntity;
 import net.minecraft.entity.Minecart;
 import net.minecraft.entity.projectile.Arrow;
+import net.minecraft.item.ItemType;
 import net.minecraft.tile.RailTile;
 import net.minecraft.util.maths.Box;
 import net.minecraft.util.maths.MathsHelper;
@@ -23,7 +24,26 @@ public class MinecartMixin {
 
 	private static final double EXTRA_MINECART_XZ_SIZE = 0.4;
 	private static final double EXTRA_MINECART_Y_SIZE = 0.0;
-
+	private static final int COAL_FUEL = 1200;
+	
+	@Inject(method = "damage", at = @At("HEAD"))
+	public void onDamage(Entity entity, int damage, CallbackInfoReturnable<Boolean> ci) {
+		Minecart minecart = ((Minecart) (Object) this);
+		if (!minecart.level.isClient && minecart.type == 2) {
+			int coal = minecart.fuel / COAL_FUEL;
+			if (coal > 0) {
+				while (coal > 0) {
+					if (coal < 64) {
+						minecart.dropItem(ItemType.coal.id, coal, 0.0F);
+						break;
+					}
+					minecart.dropItem(ItemType.coal.id, 64, 0.0F);
+					coal -= 64;
+				}
+			}
+		}
+	}
+	
 	@Inject(method = "method_1379", at = @At("HEAD"), cancellable = true)
 	public void onCollision(Entity other, CallbackInfoReturnable<Box> ci) {
 		if (ModConfig.FIX_MINECART_STOPPING_ON_ITEMS.get()) {
@@ -31,6 +51,15 @@ public class MinecartMixin {
 				ci.setReturnValue(null);
 			}
 		}
+		
+		if (ModConfig.FURNACE_MINECART_PUSH.get()) {
+			Minecart minecart = ((Minecart) (Object) this);
+			if (minecart.type == 2 && other instanceof Minecart) {
+				Minecart otherMinecart = (Minecart) other;
+				otherMinecart.velocityX = minecart.pushX * 1.02;
+				otherMinecart.velocityZ = minecart.pushZ * 1.02;
+			}
+		}
 	}
 
 	@ModifyConstant(method = "tick", constant = @Constant(doubleValue = 0.4))