[XCL] Knock-off Pharmacy 0.5.2

Here's the core logic we'll be using. The idea here is that you drug/pill will show up in Pill Poppa and not in The X-Change Pharmacy if the player has this mod installed. The "if:" section is where your KO-Pharm-compatible passage should go. The "else-if:" section should remain blank (it displays for the XC Pharmacy), and the "else:" section should be the default version of your code that displays in the XC Pharmacy if the player doesn't have this mod:

  (if:((passage:"__mods__")'s source contains "Knockoff Pharmacy") and ($current_location is "Pill Poppa"))
    []
  (else-if:((passage:"__mods__")'s source contains "Knockoff Pharmacy"))
    []
  (else:)
    []

This mod adds the following passage tags that you can use for your mod:

• ko_pharmacy_options - For adding additional options to the pharmacy
• ko_browse_pills - For browsing the store's pill inventory
• ko_purchase_pills - For purchasing transformable pills (see code examples for how to setup "drugs")

In the case of adding your pill, you'll be using both the base game's "browse_pills" passage tag, and the KO Pharm's "ko_browse_pills" tag. 

Here's how the code looks for my Cock-Up drug:

:: drug listing CockUp [browse_pills ko_browse_pills]
{==
    <!-- Drugs sold in Pill Poppa Go here-->
    (if:((passage:"__mods__")'s source contains "Knockoff Pharmacy") and ($current_location is "Pill Poppa"))
        [
            <span class='shadow'>Cock-Up™ -  $80</span> (link:"Select")
                [
                    (set:$select to "CockUp")
                    (set:$price to 80)
                    (set:$next to "drug purchase CockUp")
                    (display:"change screen")
                ]
            (nl:1)
        ]
    <!-- X-Changed Pharmacy gets an empty passage when the mod is installed -->
    (else-if:((passage:"__mods__")'s source contains "Knockoff Pharmacy"))
        []
    <!-- Without the mod, the drug should display in the base-game pharmacy -->
    (else:)
        [
            <span class='shadow'>Cock-Up™ -  $80</span> (link:"Select")
                [
                    (set:$select to "CockUp")
                    (set:$price to 80)
                    (set:$next to "drug purchase CockUp")
                    (display:"change screen")
                ]
            (nl:1)
        ]

:: drug purchase CockUp
{==
    (if:$select is "CockUp")[
        <span class='shadow'>Cock-Up™</span>
        <br/><br/>
        (print:"By: Rexor")(nl:1)
        (print:"Need a big dick for the night? Cock-Up's got you covered!")(nl:1)
        (print:"Disclaimer: Independent studies suggest frequent use of Cock-Up is associated with periodic lapses in concentration. Use with discretion.")(nl:1)

        (if:((passage:"__mods__")'s source contains "Knockoff Pharmacy") and ($current_location is "Pill Poppa"))
            [(display: "ko shop buy drug")]
        (else-if:((passage:"__mods__")'s source contains "Knockoff Pharmacy"))
            []
        (else:)
            [(display: "shop buy drug")]
    ]

Note that in the "drug purchase" passage, the only real difference is sending the player to the "ko shop buy drug" passage, so they stay in the correct store.