52 lines
1.5 KiB
Plaintext
52 lines
1.5 KiB
Plaintext
.TH TIMMY 1
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.SH NAME
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timmy \- physics sandbox
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.SH SYNOPSIS
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.B games/timmy
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[
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.B -s
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.I steps-per-frame
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]
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.SH DESCRIPTION
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.I Timmy
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is a simple 2D physics sandbox.
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.PP
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To pick up an object click on it with mouse button 1.
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New objects can be created by picking up their archetypes in the gray area on the bottom (the "tray").
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To place an object in the working area click at the desired position with mouse button 1;
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.I timmy
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will refuse to place the object if it would collide with an existing one.
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To abort the process \(em deleting the carried object \(em click anywhere with mouse button 3.
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Picking up an object in the working area with mouse button 3 will duplicate the object.
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.PP
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The following operations can be performed with the keyboard.
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.IP w
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Rotate carried object by 15° to the left.
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.IP e
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Rotate carried object by 15° to the right.
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.IP space
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Start or stop the simulation.
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.IP del
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Exit timmy.
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.PP
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The small circles on some objects are "hinges".
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Two hinges can be connected by placing them on top of each other.
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Their relative position will not change during the simulation; objects are however free to rotate around them.
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To undo a hinge, pick up either of the objects.
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.PP
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The
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.B -s
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option adjusts the speed of the simulation; only integer values are permitted.
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It does not compromise accuracy.
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.SH SOURCE
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.B /sys/src/games/timmy
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.SH BUGS
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.IR Timmy 's
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physics may occasionally appear to originate from another universe.
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.PP
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.B -s
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is a hack.
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.SH HISTORY
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.I Timmy
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first appeared in 9front (June, 2016).
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