Minecraft/src/main/java/com/microsoft/Malmo/Utils/CraftingHelper.java [165:180]:
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    public static boolean playerHasIngredients(EntityPlayerMP player, List<ItemStack> ingredients) {
        NonNullList<ItemStack> main = player.inventory.mainInventory;
        NonNullList<ItemStack> arm = player.inventory.armorInventory;

        for (ItemStack isIngredient : ingredients) {
            int target = isIngredient.getCount();
            for (int i = 0; i < main.size() + arm.size() && target > 0; i++) {
                ItemStack isPlayer = (i >= main.size()) ? arm.get(i - main.size()) : main.get(i);
                if (isPlayer != null && isIngredient != null && itemStackIngredientsMatch(isPlayer, isIngredient))
                    target -= isPlayer.getCount();
            }
            if (target > 0)
                return false;   // Don't have enough of this.
        }
        return true;
    }
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Minecraft/src/main/java/com/microsoft/Malmo/Utils/CraftingHelper.java [190:205]:
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    public static boolean playerHasIngredients(EntityPlayerSP player, List<ItemStack> ingredients) {
        NonNullList<ItemStack> main = player.inventory.mainInventory;
        NonNullList<ItemStack> arm = player.inventory.armorInventory;

        for (ItemStack isIngredient : ingredients) {
            int target = isIngredient.getCount();
            for (int i = 0; i < main.size() + arm.size() && target > 0; i++) {
                ItemStack isPlayer = (i >= main.size()) ? arm.get(i - main.size()) : main.get(i);
                if (isPlayer != null && isIngredient != null && itemStackIngredientsMatch(isPlayer, isIngredient))
                    target -= isPlayer.getCount();
            }
            if (target > 0)
                return false;   // Don't have enough of this.
        }
        return true;
    }
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