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| | The interpreter cycle in [[AGI]] works thusly: | | The interpreter cycle in [[AGI]] works thusly: |
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| − | {|
| + | <blockquote>[[File:InterpreterWorkCycle.png|600px]]</blockquote> |
| − | |<pre>
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| − | +---------------------------+
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| − | | 1. delay time |
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| − | +---------------------------+
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| − | |
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| − | V
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| − | +----------------------------+
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| − | |2. clear the keyboard buffer|
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| − | +----------------------------+
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| − | |
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| − | V
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| − | +---------------------------+
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| − | | Flag (2) - > 0 |
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| − | | Flag (4) - > 0 |
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| − | +---------------------------+
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| − | |
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| − | V
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| − | +-------------------------------------+
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| − | | 3. poll keyboard and joystick |
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| − | +-------------------------------------+
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| − | |
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| − | V
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| − | +-------------------------------------+
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| − | | If the current mode is |
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| − | | - program_control, the direction of |
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| − | | Ego motion <-- var(6). |
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| − | | - player.control, var (6) --> dir. |
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| − | | of Ego motion. |
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| − | +-------------------------------------+
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| − | |
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| − | V
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| − | +---------------------------------------------------------------+
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| − | | For all objects for which command animate.obj, start_update |
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| − | | and draw were carried out, the recalculation of the direction |
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| − | | of movement is performed. |
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| − | +---------------------------------------------------------------+
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| − | |
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| − | V
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| − | +---------------------------------------------------------------+
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| − | | If the score has changed (var (3)) or the sound has been |
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| − | | turned on or off (Flag (9)), the status line is updated. |
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| − | +---------------------------------------------------------------+
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| − | |
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| − | +---------+
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| − | V
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| − | +--------------------------+
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| − | +---------------->| 4 Logic 0 is executed |
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| − | | +--------------------------+
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| − | | |
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| − | | V
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| − | | +--------------------------------------+
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| − | | | - Dir. of motion of Ego <-- var (6) |
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| − | | | - If score (var (3)) or Flag (9) |
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| − | | | have changed their values - update |
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| − | | | the status and score (on Var (3)); |
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| − | | | - Var (5) - > 0; |
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| − | | | - Var (4) - > 0; |
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| − | | | - Flag (5) - > 0!!!! |
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| − | | | - Flag (6) - > 0; |
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| − | | | - Flag (12) - > 0. |
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| − | | +--------------------------------------+
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| − | +----------------------------+ |
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| − | | Execute: | V
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| − | | ~~~~~~~~~~~~~~~~~~~~~~~~ | +------------------------+
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| − | | - stop.update; | | Update all controlled |
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| − | | - unanimate.all; | | objects on the screen. |
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| − | | - destroy all logic | +------------------------+
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| − | | resources except | |
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| − | | for logic 0; | V
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| − | | - player.control; | +--------------+
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| − | | - unblock; | | new.room n |
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| − | | - set_horizon 36; | | or |
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| − | | - var (1) = var (0); | | new.room.v n |
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| − | | - var (0) = n | Var(n); | | was issued? |
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| − | | - var (4) = 0; | | |
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| − | | - var (5) = 0; | +-------+------+
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| − | | - var (9) = 0; |<-----------+ Yes | No |
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| − | | - var (16) = number of | +-------+--+---+
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| − | | view assoc. w/Ego; | |
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| − | | - Ego coords from var (2); | |
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| − | | - var (2) = 0; | |
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| − | | - flag (2) - > 0; | V
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| − | | - flag (5) - > 1!!!! | +--------------+
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| − | | - score < - var (3); | | Go to step 1 |
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| − | +----------------------------+ +--------------+
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| − | </pre> | |
| − | |}
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| | | | |
| − | == See Also == | + | == <br />See Also == |
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| | *[[AGI Specifications: Chapter 3 - AGI Internals|AGI Internals]] | | *[[AGI Specifications: Chapter 3 - AGI Internals|AGI Internals]] |
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| − | [[Category:Interpreter]] | + | [[Category:AGI Interpreter]] |
