mirror of
https://github.com/ganelson/inform.git
synced 2024-07-07 17:44:22 +03:00
87 lines
4.2 KiB
Plaintext
87 lines
4.2 KiB
Plaintext
Example: *** Channel 2
|
|
Subtitle: Television with more advanced parsing
|
|
Location: Understanding things by their properties
|
|
RecipeLocation: Televisions and Radios
|
|
Index: Channel 2. Television with more advanced parsing
|
|
Description: Understanding channels (a number) in the names of televisions, with more sophisticated parsing of the change channel action.
|
|
For: Z-Machine
|
|
|
|
Our previous implementation of televisions ("Channel 1") doesn't allow the player to type things like
|
|
|
|
TUNE FIFTIES TELEVISION TO CHANNEL 4
|
|
|
|
nor does it deal with player input like
|
|
|
|
TUNE TO CHANNEL 4 ON FIFTIES TELEVISION
|
|
|
|
or
|
|
|
|
TUNE TO CHANNEL 4
|
|
|
|
where no television is specified. When we are designing commands which involve two elements (here, a television and a channel number), it's usually a good idea to allow the player to specify those elements in either order, as we saw demonstrated briefly in "New commands for old grammar".
|
|
|
|
We might, therefore, want to add a few refinements: first by defining a "[channel]" token that will accept input of the forms "[number]" and "channel [number]", and second by creating some additional "Understand" lines that will accept variant versions of the player's input.
|
|
|
|
{*}"Channel 2"
|
|
|
|
Section 1 - Televisions in General
|
|
|
|
A television is a kind of device.
|
|
|
|
A television has a number called the channel. Understand the channel property as referring to a television. Understand "channel" as a television.
|
|
|
|
Changing the channel of it to is an action applying to one thing and one number.
|
|
|
|
Understand "tune [television] to [channel]" or "change channel of [television] to [channel]" as changing the channel of it to.
|
|
|
|
Understand "tune [something] to [channel]" or "change channel of [something] to [channel]" as changing the channel of it to.
|
|
|
|
Understand "tune to [channel] on [television]" or "change to [channel] on [television]" as changing the channel of it to (with nouns reversed).
|
|
|
|
Understand "tune to [channel] on [something]" or "change to [channel] on [something]" as changing the channel of it to (with nouns reversed).
|
|
|
|
Understand "[number]" or "channel [number]" as "[channel]".
|
|
|
|
Check changing the channel of something to:
|
|
if the noun is not a television, say "[The noun] cannot be tuned to a channel." instead.
|
|
|
|
Carry out changing the channel of something to:
|
|
now the channel of the noun is the number understood.
|
|
|
|
Report changing the channel of something to:
|
|
say "You tune [the noun] to channel [number understood]."
|
|
|
|
Instead of examining a television:
|
|
if the noun is switched off, say "[The noun] is currently turned off." instead;
|
|
let the chosen channel be the channel of the noun;
|
|
if the chosen channel is a current channel listed in the Table of Television Channels:
|
|
choose row with current channel of the chosen channel in the Table of Television Channels;
|
|
say "[output entry][paragraph break]";
|
|
otherwise:
|
|
say "Snow fills the screen of [the noun]."
|
|
|
|
Table of Television Channels
|
|
current channel output
|
|
0 "The screen of [the noun] is completely black."
|
|
|
|
Section 2 - The Scenario
|
|
|
|
The Office is a room.
|
|
|
|
The widescreen TV is a television in the Office. The fifties TV is a television in the Office.
|
|
|
|
And we add the scenario-specific content to our Table of Television Channels; in the case of channel 13, we provide for a changing sequence of events using text variations.
|
|
|
|
{**}Table of Television Channels (continued)
|
|
current channel output
|
|
4 "A gloomy female news anchor describes the latest car bomb in Baghdad: 104 dead today, and no sign of change."
|
|
5 "A couple of contestants in spangled scarlet outfits are performing an energetic paso doble."
|
|
13 "[one of]On-screen, Ichiro is up to bat with one man on second and no outs.[or]Ichiro has singled to first and the other man is on third.[or]The next batter is in the middle of flying out.[or]Everything looks rosy until the men in black pull off a double-play and retire the side.[or]The channel has cut to a commercial.[stopping]"
|
|
|
|
Test me with "test one / test two".
|
|
|
|
Test one with "change channel of fifties tv to 4 / x channel 4 / switch on fifties / x channel 4 / switch on widescreen / tune fifties tv to channel 5 / x channel 5 / x fifties tv / x channel 4".
|
|
|
|
Test two with "tune to channel 13 / widescreen / tune channel 13 to channel 5 / tune channel 5 to channel 3 / widescreen / x channel 3".
|
|
|