Request sample code to detect image onclick event

[weilies]

Greeting guru,

How can love engine detect a mouse clicked on my character sprite ?

From the doc provided, I only saw code to capture input from keyboard and mouse
How can I tell my program to increase my score when my mouse clicked on enemy image object?

[Robin]

Well, then you're half way there. You now only have to compare the location of the mouse to the location you draw the Image (technically, they're not really sprites).

In pseudocode it'll be something like:

Code: Select all

function love.mousepressed(x, y)
    if x >= draw_x and x <= draw_x + width and y >= draw_y and y <= draw_y + height then
        score = score + 1
    end
end

[weilies]

os, there is no

logic like

Code: Select all

my_enemey.onClick {
     score = score + 1
}

from your suggested code, imagine it's a polygon, then using ur code might end up trigger the increase score even click outside the image

[Robin]

os, there is no

logic like

Code: Select all

my_enemey.onClick {
     score = score + 1
}

Nope. That's not even valid Lua.

from your suggested code, imagine it's a polygon, then using ur code might end up trigger the increase score even click outside the image

Well, most of the time a rectangular or circular bounding box is precise enough. if you really want pixel-perfect clicking, you'd need to use a Shape, set its position to the same location as the image and then run myshape:testPoint(x, y) on it. If it returns true, you clicked on the image. If you want to see it used in an actual unfinished game, you could take a look at http://github.com/gvx/Conq-rer.