47 lines
1.7 KiB
Markdown
47 lines
1.7 KiB
Markdown
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<!----------------------------------------------------------------------------
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Copyright @ 2021-2022 Codam Coding College. All rights reserved.
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See copyright and license notice in the root project for more information.
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----------------------------------------------------------------------------->
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# Input methods
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MLX42 provides various ways of detecting input, you can read about all the available hooks on the hooks page.
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## Key Detection
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### Generic Hook + function
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The easiest way of detecting continuous keypressing is via a generic hook and then checking if the specific key is down.
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This is the 'traditional' way of detecting if a key is down even in modern game engines. It provides the quickest feedback and if it's used to, say, move a character, the smoothest result.
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```c
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void hook(void *param)
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{
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mlx_t *mlx;
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mlx = param;
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if (mlx_is_key_down(param, MLX_KEY_ESCAPE))
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mlx_close_window(param);
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if (mlx_is_key_down(param, MLX_KEY_UP))
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g_img->instances[0].y -= 5;
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if (mlx_is_key_down(param, MLX_KEY_DOWN))
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g_img->instances[0].y += 5;
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if (mlx_is_key_down(param, MLX_KEY_LEFT))
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g_img->instances[0].x -= 5;
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if (mlx_is_key_down(param, MLX_KEY_RIGHT))
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g_img->instances[0].x += 5;
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}
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```
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### Hook Function
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For more exact input detection such as checking if the key was pressed with `Alt` or `ctrl` you should use the actual Key hook.
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Keep in mind that using a keyhook results in a slower feedback compared to using a generic hook but grants you more control in key detection.
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```c
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void key_hook(mlx_key_data_t keydata, void* param)
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{
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if (keydata.key == MLX_KEY_A && keydata.action == MLX_RELEASE && keydata.modifier == MLX_CONTROL)
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puts("Gotta grab it all!");
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}
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```
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