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Learning ZIL

Learning ZIL: Everything You Always Wanted to Know About Writing Interactive Fiction But Couldn't Find Anyone Still Working Here to Ask, by Steven Eric Meretzky, Infocom, Inc. Written in 1989, later converted to Microsoft Word in August of 1995. Derived from a 2002 printout and converted to PDF. Table of Contents 1. The Basics 1.1 The Basic Ingredients 1.2 The Handler 1.3 The Parser's Role 1.4 The Basic Handling Sequence 2. Creating Rooms 2.1 What a Typical Room Definition Looks Like 2.2 Exits 2.3 Other Parts of a Room Definition 3. Creating Objects 3.1 What an Object Definition Looks Like 3.2 Object properties 4. Routines in ZIL 4.1 The Basic Parts 4.2 Calling a Routine 4.3 Conditionals 4.4 Exiting a Routine 4.5 ZIL Instructions 5. Simple Action Routines 5.1 Simple Object Action Routines 5.2 Other Common Predicates 5.3 More Complicated Predicates 5.4 A Room's Action Routine EXERCISE ONE 6. Events 6.1 Definition 6.2 How The Interrupt System Works 6.3 Queuing an Interrupt Routine 6.4 Room M-ENDs 7. Let's Learn a Whole Lot More About ZIL Code 7.1 Mathematical Expressions in ZIL 7.2 Global Variables 7.3 The Containment System 7.4 Globals and Local-Globals 7.5 The Full Glory of TELL 7.

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