applyForce to a bullet in the direction the gun is pointing

Physics
#1

I am trying to apply a force to a small display.newCircle() in the direction that the player rotates the gun itself.

–For future reference, I had to subtract 90 from “myAngle” to get this to work, after that everything lined up.​

#2

Hey logan,

this question was answered in several topics already. (use the search function next time please)

Check for example this topic, which covers all you need:

https://forums.coronalabs.com/topic/63285-working-out-angle-to-apply-force/

Here’s the code in short:

local function angle2VecDeg(angle) angle = angle\*math.pi/180 return math.cos(angle), math.sin(angle) end local myAngle = 90 --the rotation of the object local myForce = 100 --the force you want to apply local vecX, vecY = angle2VecDeg(myAngle) myObject:applyForce(vecX\*myForce, vecY\*myForce)

Greetings

Tirben :slight_smile:

#3

Could you explain how to implement this into my code and how it works. I see that you change the degrees to radians and return the cosine and sine of that but it is still doing the same as when I set the y force to the rotation of the gun in degrees. Thanks!!

#4

Hey logan,

this question was answered in several topics already. (use the search function next time please)

Check for example this topic, which covers all you need:

https://forums.coronalabs.com/topic/63285-working-out-angle-to-apply-force/

Here’s the code in short:

local function angle2VecDeg(angle) angle = angle\*math.pi/180 return math.cos(angle), math.sin(angle) end local myAngle = 90 --the rotation of the object local myForce = 100 --the force you want to apply local vecX, vecY = angle2VecDeg(myAngle) myObject:applyForce(vecX\*myForce, vecY\*myForce)

Greetings

Tirben :slight_smile:

#5

Could you explain how to implement this into my code and how it works. I see that you change the degrees to radians and return the cosine and sine of that but it is still doing the same as when I set the y force to the rotation of the gun in degrees. Thanks!!