Drawing function help

[smillz]

I'm kinda new to drawing functions, and I thought a canvas actor would add some interesting attributes to my game so I have some questions to what I can and cannot do.

Question 1: How can I make the whole canvas actor to instantly change one color?
Question 2: Can I have the pen to draw from an actor instead of the mouse?
Question 3: Can I make the pen circular instead of square?
Question 4: Can I have an actor collide only with the drawn portion in a canvas actor?
Question 5: Can I use a Draw From function on an area instead of just on an actor?

Thanks

[makslane]

Question 1: How can I make the whole canvas actor to instantly change one color?

Use the funcion erase:
http://game-editor.com/docs/script_reference.htm#erase

Question 2: Can I have the pen to draw from an actor instead of the mouse?

Just use the coordinates of the actor, instead the mouse position.

Code: Select all

int xn, yn;

xn = youractor.xscreen;
yn = youractor.yscreen;

screen_to_actor(&xn, &yn);
putpixel(xn, yn);

Question 3: Can I make the pen circular instead of square?

No, sorry

Question 4: Can I have an actor collide only with the drawn portion in a canvas actor?

Sure! But first, make sure erase the canvas with a transparent color, like:

Code: Select all

erase(0, 0, 0, 1);

Look the attached file.

Question 5: Can I use a Draw From function on an area instead of just on an actor?

You can use only in canvas actors.

[smillz]

Thanks! I needed it