Collision area of a Tap Event | GameMaker | Page 1

frosty summit Oct 21, 2022, 6:07 PM

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Hi! so, seemingly, the collision shape/area is set in "edit sprite" window, or with a collision_rectangle() function.
But what if my sprite is drawn on the GUI layer resized? (it is resized to the (drawn with scribble) string's width and height).
Tap Event works only on the initial 32x32 pixels of the sprite. How do i make it work on the whole sprite? I have tried setting collision rectangle manually in the step event collision_rectangle(x, y, text_w/sprite_width, text_h/sprite_height, self, false, false);, entering the same coordinates that i used in drawing the resized sprite draw_sprite_ext(sprite_index, image_index, x, y, text_w/sprite_width, text_h/sprite_height, 0, c_white, 1);
(text_w = scribble(text).get_width(); text_h = scribble(text).get_height();), but seems like it does not work that way.

simple tendon Oct 21, 2022, 6:09 PM

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you will have to use the step event instead of the tap event and you will need to use a point in rectangle call using the device mouse to gui position

frosty summit Oct 21, 2022, 6:10 PM

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let me try

frosty summit Oct 21, 2022, 6:26 PM

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i dont think it worked, or i am just ultra-stupid

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    interact();
}```

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now since i deactivated tap event, it never runs interact()

simple tendon Oct 21, 2022, 6:30 PM

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are the x and y coordinates here local to the gui

frosty summit Oct 21, 2022, 6:31 PM

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do they have to be room coordinates or gui coordinates here? i have a function to convert room-to-gui coordinates, should i use it?

simple tendon Oct 21, 2022, 6:34 PM

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they definitely need to be in gui space for this to work

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and the point in rectangle function takes corners not sizes

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so you need x1 y1 and x2 y2. something like:

var mx = device_mouse_x_to_gui(0);
var my = device_mouse_y_to_gui(0);
var width = width_in_pixels_not_a_scale;
var height = height_in_pixels_not_a_scale;
var x1 = gui_space_x_position;
var y1 = gui_space_y_position;
var x2 = x1 + width;
var y2 = y1 + height;

if (point_in_rectangle(mx, my, x1, y1, x2, y2)) {

}```

frosty summit Oct 21, 2022, 6:37 PM

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does sprite_width (for example) give size in pixels, or a scale?

simple tendon Oct 21, 2022, 6:37 PM

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pixels

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adjusted for scale

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and you can do this in a step event, for mouseover/clicking stuff

frosty summit Oct 21, 2022, 6:40 PM

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so i did it like that now

    interact();
}```

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wtg stands for "world(room) to gui"

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oh wait i am stupid

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    interact();
}```

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nah it still doesnt work, or should i not be lazy and rewrite it in a clearer way using variables like in your example

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oh, i used scale instead of width and height

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okay, now it works but only for that sprite 32x32 area, ignoring the resize done in draw GUI event

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wait

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no, i dont know how do i get the size of the resized sprite in pixels

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OH I KNOW

#Collision area of a Tap Event