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Added core_input_mouse.c example #41

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@hiranyey hiranyey commented Feb 19, 2024

Just a small change to make core_input_mouse.c working, but the mapping between raylib mouse constants and browser mouse constants are different.
For me, left button is showing correct color but right and middle button are swapped.

This patch implements IsMouseButtonPressed
and i cant test out MOUSE_BUTTON_SIDE,MOUSE_BUTTON_EXTRA,MOUSE_BUTTON_FORWARD,MOUSE_BUTTON_BACK as i dont have those mouse buttons in any of my mouses

Tested other pages too and i can conclude that this patch wont create a regression in other pages.

@ZakChrom
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It doesn't seem like the MOUSE_BUTTON_FORWARD and MOUSE_BUTTON_BACK buttons work in the browser.
I found this Stack Overflow question that might fix this tho.

Comment on lines +362 to +370
const raylibMOuseButtonMapping = {
0: 0,
1: 2,
2: 1,
3: 3,
4: 4,
5: 5,
6: 6,
}
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Such naive mapping is not needed imo, return this.currentMouseButton == button would suffice.

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@hiranyey hiranyey Feb 21, 2024

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It's needed because in later examples, it is important to have correct mapping for the right and middle click.
My previous commit just used return this.currentMouseButton == button but had to change it to accommodate mouse constant swap, there can also be swaps in 3,4,5,6 mouse buttons but I don't have a way to test them out

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@hiranyey is correct here. The mappings are not 1:1. See the differences below...

typedef enum {
    MOUSE_BUTTON_LEFT    = 0,       // Mouse button left
    MOUSE_BUTTON_RIGHT   = 1,       // Mouse button right
    MOUSE_BUTTON_MIDDLE  = 2,       // Mouse button middle (pressed wheel)
    MOUSE_BUTTON_SIDE    = 3,       // Mouse button side (advanced mouse device)
    MOUSE_BUTTON_EXTRA   = 4,       // Mouse button extra (advanced mouse device)
    MOUSE_BUTTON_FORWARD = 5,       // Mouse button forward (advanced mouse device)
    MOUSE_BUTTON_BACK    = 6,       // Mouse button back (advanced mouse device)
} MouseButton;

Web API: https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/button#value

0: Main button pressed, usually the left button or the un-initialized state
1: Auxiliary button pressed, usually the wheel button or the middle button (if present)
2: Secondary button pressed, usually the right button
3: Fourth button, typically the Browser Back button
4: Fifth button, typically the Browser Forward button

window.addEventListener("keydown", keyDown);
window.addEventListener("keyup", keyUp);
window.addEventListener("wheel", wheelMove);
window.addEventListener("mousemove", mouseMove);
window.addEventListener("mousedown", mouseClick);

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I understand you're just adding IsMouseButtonPressed() right now, but could we also implement the other mouse functions here too?

IsMouseButtonPressed
IsMouseButtonDown
IsMouseButtonReleased
IsMouseButtonUp

The pattern is already implemented with keys, so could do the same here.

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Yeah, this is easy to do,
I will check if there are examples in Raylib using these new functions and include them in this PR

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In #52 , I wasn't able to find examples that used the related keyboard functions, so I wouldn't be surprised if examples don't exist.

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4 participants