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Results tagged with physics
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user 29746
Relating to the motion of objects through space and time. Including concepts such as acceleration (thrust and gravity), mass, collision response, friction and more.
1
vote
Calculating an orbit and approach velocties
Thus, it's fairly straightforward to "fake" physics without doing a complicated simulation. You only need to alter acceleration of the drone to "fake" the gravity of the node. …
- 2,209
2
votes
Accepted
SpriteKit - How to jump to specific position?
SpriteKit uses SKAction objects to accomplish most of its functionality. What you're seeking is SKAction's followPath:duration: action.
The following accomplishes this:
UIBezierPath *path = [UI …
- 2,209
0
votes
calculating the trajectory of an object in SpriteKit when an impulse is applied to it
A much more straightforward solution is simply to make a hidden or transparent copy of the projectile, remove collision masks, and launch it. You can either leave a trail of small sprite nodes at var …
- 2,209
0
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Sprite Kit - containsPoint for SKPhysicsBody?
The simplest means of determining if there is contact after your touches finish is to alter the category of the "ball" to a category that registers contacts with the "bucket".
That is to say, your …
- 2,209
1
vote
Spritekit - gradually apply force vector in different direction (space ship turning)
First, the behavior you're describing is that of an aerodynamic vehicle with a single vector of force. A spaceship, flying in space, would operate in an entirely different manner.
If this is sti …
- 2,209
0
votes
Accepted
Sprite Kit - keeping character level with the terrain 2d endless runner
To keep a character level with a moving "ground" without its x position being affected by the physics engine, it would seem the best solution might be to place an SKConstraint on the character. … Specifically:
character.constraints = [SKConstraint.positionX(SKRange(constantValue: 0.0))]
If you have any weird bugs from SpriteKit's physics engine, you might try placing a node with a physicsBody …
- 2,209
1
vote
Swinging a sword in Xcode with Sprite Kit
categoryBitMask is the category of the physics body (e.g. swordCategory)
contactBitMask is the product of the ORed categories of the types of nodes you want to test for contact (e.g. enemyCategory | breakableCategory …
- 2,209
6
votes
Accepted
How to detect collision on specific part of the sprite node
Remember that SpriteKit's physics system is based on "SKPhysicsBody"s, which are added to "SKSpriteNode"s. Those physics bodies, however, needn't be attached to visible nodes. …
- 2,209