koobas.hobune.stream
Spawn an object?
Hello, this is a simple question, but how would I spawn an object at a certain velocity and position (relative to another object). Like a bullet firing from ship for a 2D shooter? Thanks.
Your bullet (or whatever you want to 'instantiate') should be a 'Child' or 'Sub-Object' of your GameObject 'Ship' (or w/e na$$anonymous$$g convention you chose).
This would make it very easy to get the bullet firing "FRO$$anonymous$$" the ship. A little fiddling around and you should have it in the position that you desire.
what if he moves the ship? wouldnt the bullet move with the ship? thats bad I think.
Further to lampshade's answer, here is an example of how you can use instantiate and the sort of firing mechanism you may want to look into:
// make sure that the ammo is where it's supposed to be GameObject ammoClone = (GameObject)Instantiate(ammo, startPointTransform.position);
// "firing" effect. The last parameter, ForceMode.VelocityChnage, is crucial in mimicking the initial velocity of a 'fired' object such as a cannonball or bullet. ammoClone.rigidbody.AddRelativeForce(startPointTransform.forward * BlastForce, ForceMode.VelocityChange);
The above code, is a snippet. It assumes the following conditions:
- ammo is a reference to the object acting as the ammo.
- The ammo object has a rigidbody component attached to it.
- startPointTransform is a reference to the Transform of the object acting as the origin or start point of the ammo object
- BlastForce is a float which you could control to adjust the initial force applied to the ammo
Note that this is in C#, not JS. It also doesn't add a velocity relative to the other object. To do that you'd have to first set the velocity to equal the other object and then add the force.
To Bring something into existance? Instantiate! http://unity3d.com/support/documentation/ScriptReference/Object.Instantiate.html
