Monday, 10 March 2014

The click macro (Sugarcube only)

If you are using Sugarcube, you get a whole new set of macros to play with.This a way of updating a page the player is on. In this example, the player finds a sword, and if she clicks on the link, the sword is picked up.

You are in a room, with <<id "link">><<click "a sword">><<set $weapon = 'fire'>><<append  "#fire">>You pick up the sword, and brandish it fiercely.<</append>><<replace "#link">>a sword<</replace>><</click>><</id>> on the floor.

<<id "fire">><</id>>


There is a lot going on there!

The <<click>> macro is the key. It takes a single argument with is the link text. When the player clicks the link, the macros inside <<click>> will be run.

The <<set>> macro sets a variable, so we can later test if  the sword was taken.

The <<append>> macro adds some text to he end of the HTML element named, in this case the span element with an id "fire".

The <<replace>> is similar, but removes the existing text (we need to do that to stop the player picking up the sword multiple times).

The <<id>> macro simply sets up a span with the given ID.


 Here is a something similar, but this time clicking the link displays a box with text; you can click the box to dismiss it. This can be used to allow the player to examine objects in the current location without sending her to another page.

You are in a room, with <<click "a button">><<set document.getElementById("hidden1").style.display="block">><</click>> on the floor.

<<id "hidden1">><<click "The button is big and red">><<set document.getElementById("hidden1").style.display="none">><</click>><</id>>


The stylesheet entry might be like this (this allows up to 5 links, named hidden1, hidden2...):


/* This is the panel that will appear */
#hidden1, #hidden2, #hidden3, #hidden4, #hidden5 {
  display:none;
  position:fixed;
  top:300px;
  left:200px;
  background-color:#eef;
  padding:20px;
  border-radius: 15px;
  border-color: #004;
}
/* This is the text in the panel  */
#hidden1 a, #hidden2 a, #hidden3 a, #hidden4 a, #hidden5 a {
  font-style:italic;
  color:#004;
}

/* links in the main passage */
.link-click {
  color:red;
}


Again the <<click>> macro adds the functionality to the text. In this case, the <<set>> macro is used to change whether the descruiption is displayed, by changing the "display" CSS property.

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