[core] Moves keymapUS[] and fixes GetCharPressed for PLATFORM_DRM

[ghost]

Changes

1. Moves the keymapUS[] LUT out of PollKeyboardEvents (L1457-L1476) to Local Variables Definition (R143-R162) so it doesn't have to be redefined every time PollKeyboardEvents() runs on PLATFORM_DRM.

2. Adds handling for CORE.Input.Keyboard.charPressedQueue and CORE.Input.Keyboard.charPressedQueueCount (R164-R171, R1533-R1543) that was missing on PLATFORM_DRM. That was the reason why couldn't type on examples with type inputs (e.g.: text_draw_3d, text_input_box), since they used GetCharPressed(). Therefore, fixes those examples.

Note

• The EvkeyToUnicodeLUT (R164-R171) is incomplete, I just mapped the most essential keys so we could get this working. If this doesn't get replaced on the DRM input rework, I'll comeback and finish the LUT.

Reference

• [examples] Review some examples not working properly on several platforms #3487

Enviroment

• Tested on Raspberry Pi 3 Model B 1.2 with Linux (Raspberry Pi OS 11 Bullseye 32-bit armhf).

Edits

• 1: added line marks, formatting.

[raysan5]

@ubkp thank you very much for the review!

so it doesn't have to be redefined every time PollKeyboardEvents() runs on PLATFORM_DRM.

Please note that, afaik, a static variable defined inside a function is equivalent to a global variable but with reduced scope. It is only initialized once and can be changed on later calls to the function containing it. In any case, having it exposed globally is probably better for organization and future updates.

[ghost]

Please not that, afaik, a static variable defined inside a function is equivalent to a global variable but with reduced scope. It is only initialized once and can be changed on later calls to the function containing it.

@raysan5 Oh, I didn't know that. Thanks for the explanation. 👍