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36 lines
989 B
Markdown
36 lines
989 B
Markdown
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[< back to index](../doc_index.md)
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## joy
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The module contains global variables representing the state of the one-button joystick.
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If the program is not using any joystick driver, the state of these variables is undefined.
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To actually use this module, an appropriate joystick module must be used,
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such as [`c64_joy`](./c64.md), [`nes_joy`](./nes.md), [`gb_joy`](./gb.md) or [`x16_joy`](./x16.md).
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#### `sbyte input_dx`
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Horizontal joystick movement. 1 if right, -1 if left, 0 if neither.
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#### `sbyte input_dy`
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Vertical joystick movement. 1 if down, -1 if up, 0 if neither.
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#### `byte input_btn`
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1 if main button pressed, 0 if not pressed.
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#### `void reset_joy()`
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Resets the state variables.
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The default implementation resets only the main button.
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May be overridden by a strong alias on some platforms that have more buttons.
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## null_joy_default
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This module set the default joystick to no joystick.
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#### `alias read_joy`
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A reserved name for reading the default joystick.
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