Few questions.

during development i ran into some problems that arent totally covered in wiki or tutorials. so I am asking you now .

1. I want to make semi-procedural destruction for props. Now i think that my sprite (small cube) should spawn at death four copies of itself scaled down by half. I need to know how to spawn objects in specific position and dimensions.

2. How to compare speed of simulated sprite on the collision event?

to spawn sprites in specific locations with specific dimensions

System : Create Object (let's you specify the location)

Sprite.SetWidth

Sprite.SetHeight

actions after an object is created, and in the same event will apply to the object that was just created

if you're using behaviors to move your sprites, most behaviors have an expression for speed,

for instance, Set private variable MyCollisionSpeed to

and then double click on the sprite, and click on the behaviors tab to find the expression for speed

if you're using your own movement method, and no behavior, the way to determine speed is to set up two private variables, previousx, and previousy

if you need absolute speed, or the specific x and y speed

always

set absspeed to distance(previousx,previousy,sprite.x,sprite.y)

set xspeed to(sprite.x-previousx)

set yspeed to (sprite.y-previousy)

Thanks lucid for fast answear! That knowlege should be in wiki anyway . (if it is - im dumb).

Edit: Another problem, oddly physics behaviour doesn't have expression for speed, guess i had to do that the other way.

and the "distance" doesent work for me. simply theres no command like this.

and how to setup those previuosx/y variables? just make them or insert some code ?

there is a command

just type distance(somethingx,somethingy,somethingelsex,somethingelsey)

and sorry

at the end of that example I gave you

previousx = sprite.x

previousy=sprite.y

previousx and previousy being private variables you made

also,physics does have an expression for speed

this won't do anything, but just to help you find the expressions, do something like

sprite - set angle

instead of typing in a new angle, double click a sprite with physics behavior, when it brings up the list of expressions, click on the physics tab, that's the list of physics expressions

velocity x component and y component

Thanks alot! Now it's working .