Two different size objects, same mass?

Physics
#1

Hello! 

I have two objects:

    – Make the player

    player = display.newImageRect( world, playerImg, 26, 60 )

    player = players.new( player, “00272B” )

    player.y = -30

    – Make the badGuy

    badGuy = display.newImageRect( world, badGuyImg, 40, 40 )

    badGuy = badGuys.new( badGuy )

    badGuy.x = badGuy.x + 100

adding physics to both of them:

physics.addBody( player, “dynamic”, { friction = 0, bounce = 0 } )

physics.addBody(badGuy, “dynamic”)

badGuy.gravityScale = 0

And they both move like this:

function move()

instance:applyLinearImpulse(0.1, 0, instance.x, instance.y);

end

Because of their mass, they still dont move at the same speed, but that’s what i need. I know that i cant change mass and probally somehow need to calculate right density, so they both will have same mass and move at the same speed. Any help?

Thanks

#2

Use the mass in force and impulse calls to normalize the response.
 

instance:applyLinearImpulse(0.1 \* instance.mass, 0, instance.x, instance.y); instance2:applyLinearImpulse(0.1 \* instance2.mass, 0, instance2.x, instance2.y);

Now, both instance 1 and instance 2 will respond the same way to the impulse.

#3

Thank you, roaminggamer.

That was exactly what i was looking for!
Works like a charm :slight_smile:

#4

Use the mass in force and impulse calls to normalize the response.
 

instance:applyLinearImpulse(0.1 \* instance.mass, 0, instance.x, instance.y); instance2:applyLinearImpulse(0.1 \* instance2.mass, 0, instance2.x, instance2.y);

Now, both instance 1 and instance 2 will respond the same way to the impulse.

#5

Thank you, roaminggamer.

That was exactly what i was looking for!
Works like a charm :slight_smile: