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Text File | 1990-06-24 | 1.7 KB | 41 lines | [TEXT/pdos] |
- Apple II
- Sample Code Notes
- _____________________________________________________________________________
- Developer Technical Support
-
- #3: AnimDemo
-
- Version: 3.0 June 1990
-
- APW Components: AnimDemo.asm
- Full.Build
- Build
- Build.Macros
-
- MPW Components: AnimDemo.Aii
- MakeFile
-
- AnimDemo shows three different Apple IIGS animation techniques. The source
- code also demonstrates the only supported way to access screen memory
- directly, bypassing QuickDraw II.
- _____________________________________________________________________________
-
- The appearance of horizontally and vertically moving marquee lights is
- achieved by modifying color table entries using heartbeat (VBL) tasks.
- Horizontal scrolling of the text in the marquee box is handled via heartbeat
- tasks. Pixel block transfers create the effect of a bouncing color object.
-
- These three animation techniques are meant to give you an idea of what can be
- done to animate Apple IIGS graphics. Other techniques will be illustrated in
- subsequent Sample Code releases. Apple would like to hear about your methods
- too.
-
- APW users need APW v.1.0, APW Tools & Interfaces v.1.1, and Apple IIGS System
- Software 5.0.2 or later. Three APW command files, Full.Build, Build, and
- Build.Macros allow you to perform complete or partial rebuilds of the load
- file AnimDemo.
-
- MPW IIGS users need MPW v.3.0, MPW IIGS Tools v.1.1, and MPW IIGS Assembler
- v.1.0 or later. The name needed by the MPW Build menu's Build option can be
- found in the MakeFile.
-