Draw an arrow on-screen for tracking things.
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Helpers for pixel movement.
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Let players zoom in and out of your map.
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Anchor HUD boxes to the world coordinates.
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A periodically-firing event that keeps track of its own time.
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An enumeration for the built-in directions, with extra useful functions.
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Get the position of the mouse in the screen or the world.
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Track the state of the mouse buttons.
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Periodically update objects for real-time effects.
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CrossedOther, UncrossedOther, BumpedBy
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Get the absolute pixel coordinates of atoms on the map.
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Tracks press and hold times and has a looping repeat callback.
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Spaces on the map that can be duplicated, allocated, and stored.
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Returns the matrix that transforms an icon of specified size into a line of specified thickness along a given vector.
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Track buttons using the Any Macro.
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Automatically stretch to integer multiples of your icon size.
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Easy macros for common lazy patterns.
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2D vector datum for positions and offsets.
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Higher-order list functions.
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A safe weak reference to a datum.
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Events and event handlers
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Pick from an associative list of weights by value.
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A collection of useful code files.
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