getTouchPointCount() doesn't count

[Logickin-Lambda]

Hi here, thank you for creating the binding so that building raylib application in zig has becoming very easy.

However, I have faced an issue about using touch screen:

My zenbook supports multitouch, so I have written a multitouch demo in zig based on this example from the official raylib website which it works with my laptop , but no matter how, none of the fingers are responded on the screen. After I have traced the code, I just found that getTouchPointCount() never counts the number of fingers on the screen.

Here is my code:

const std = @import("std");
const rl = @import("raylib");
const gui = @import("raygui");

pub fn main() !void {
    // Initialization
    //--------------------------------------------------------------------------------------
    const screenWidth = 800;
    const screenHeight = 450;

    const MAX_TOUCH_POINTS = 10;

    rl.initWindow(screenWidth, screenHeight, "raylib-zig [core] example - basic window");
    defer rl.closeWindow(); // Close window and OpenGL context

    var touch_points: [MAX_TOUCH_POINTS]rl.Vector2 = std.mem.zeroes([10]rl.Vector2);

    rl.setTargetFPS(60); // Set our game to run at 60 frames-per-second
    //--------------------------------------------------------------------------------------

    // Main game loop
    while (!rl.windowShouldClose()) { // Detect window close button or ESC key
        // Update
        //----------------------------------------------------------------------------------
        // TODO: Update your variables here
        //----------------------------------------------------------------------------------
        var t_count = rl.getTouchPointCount();
        std.debug.print("Number of Touch Points: {d}\n", .{t_count});

        if (t_count > MAX_TOUCH_POINTS) t_count = MAX_TOUCH_POINTS;

        var i: i32 = 0;
        while (i < t_count) : (i += 1) {
            touch_points[@as(usize, @intCast(i))] = rl.getTouchPosition(i);
        }

        // Draw
        //----------------------------------------------------------------------------------
        rl.beginDrawing();
        defer rl.endDrawing();

        rl.clearBackground(rl.Color.white);

        for (0..@as(usize, @intCast(t_count))) |j| {
            if ((touch_points[j].x > 0) and (touch_points[j].y > 0)) {
                rl.drawCircleV(touch_points[j], 34, rl.Color.orange);
                rl.drawText("Touch", @as(i32, @intFromFloat(touch_points[j].x)) - 10, @as(i32, @intFromFloat(touch_points[j].y)) - 10, 40, rl.Color.black);
            }
        }
        //----------------------------------------------------------------------------------
    }
}

Is there any difference for this binding, compared to the original C version? Anything I have done wrong in the example?

[Not-Nik]

Not entirely sure if GLFW supports multitouch. Also Zenbooks might not bes supported. Can you try out the original raylib example?

[Logickin-Lambda]

Not entirely sure if GLFW supports multitouch. Also Zenbooks might not bes supported. Can you try out the original raylib example?

Yep! In fact, I did tried the original example on the website to confirm that raylib works without any issue before I decided to submit the issue; as you can see, I have included this link from the previous post.

I have captured my screen from the example above, showing that in theory, multitouch should works with zenbook; however, with our current binding, it seems to stuck at zero. Perhaps once I have some time, I will try if the original c library behave the same or differently.