collision

问题 I have looked, and have found answers for single collisions, but I am looking for a way to detect more than one type of collision. I am making a game where there are 3 collisions I would like. The user plane colliding with enemy bullets, the user's bullet colliding with the enemy plane (which i have working already), and the enemy bullet and user bullet colliding. I have all the categoryBitMask and contactTestBitMask set up and correct. Here is my delegate method. - (void) didBeginContact:

问题 I'd like to know if there is out there some tutorial or guide to understand and implement a Triangle-Triangle intersection test in a 3D Environment. (i don't need to know precise where the intersection happened, but only that an intersection has occurred) I was going to implement it following a theoric pdf, but i'm pretty stuck at the Compute plane equation of triangle 2. Reject as trivial if all points of triangle 1 are on same side. Compute plane equation of triangle 1. Reject as trivial if

问题 i'm developing a 2d game in XNA and i'm currently working on my physics class. and my current task is to stop an object when it's colliding with another. i have made my game call this function when ever 2 objects collide: public void BlockMovement(gameObject target) { //you can call width by just typing width. same for height owner.position.X += (owner.position.X - target.position.X); owner.position.Y += (owner.position.Y - target.position.Y); } the problem is that instead of stopping. the

问题 I'm using Jquery Draggable Collision (found here) and I am trying to resize the draggable area (blue square, in my JSFiddle) via a simple toggleClass() right now. Once it animates(gets bigger due to toggleclass link), I would like to measure the protrusion/collision data and subtract that from the height/width of the surrounding objects. If debugging is turned on for the plugin, it will show you that it does collect protrusion/collision data, but I'm stumped on how to use it to "shrink" the

问题 I created 5 circles with random x and y coordinates and radii using 3 arrays (for x, y and radius size). However, I need the circles to dynamically change color based on whether or not they overlap with another circle. So if one of the 5 circles doesn't overlap at all, it should be colored black. Overlapping circles should be cyan. Two circles are considered to overlap if the distance between their center points is less than the sum of their radii. This is what I have written so far for the

问题 i need help finding out why my collision code is not working. this is the code when game has started. icon1.center = CGPointMake(60, -5000); icon1.hidden = NO; int randomizeicons = rand() % 4; switch (randomizeicons) { case 0: icon1.image = [UIImage imageNamed:@"BerryBlueberryIphone.png"]; break; case 1: icon1.image = [UIImage imageNamed:@"BerryRasberryIphone.png"]; break; case 2: icon1.image = [UIImage imageNamed:@"BerryCherryIphone.png"]; break; case 3: icon1.image = [UIImage imageNamed:@

问题 I am new to C# and Winforms and try to make a moving panel. It should move right until the end of my window and then back left. It should bounce from side to side. But the only thing happened after hours of trying is that it moves left and stops. Using this form tools: Timer = tmrMoveBox (interval: 50) Panel = pnlBox Label = lblXY (for showing the X and Y coordinates in the form) Here are my first best try: private void tmrMoveBox(object sender, EventArgs e) { if (pnlBox.Location.X <= 316) {

问题 So I'm trying to implement a test where a oval can connect with a circle, but it's not working. edist = (float) Math.sqrt( Math.pow((px + ((pwidth/2) )) - (bx + (bsize/2)), 2 ) + Math.pow(-((py + ((pwidth/2)) ) - (bx + (bsize/2))), 2 ) ); and here is the full code (requires Slick2D): import org.newdawn.slick.AppGameContainer; import org.newdawn.slick.BasicGame; import org.newdawn.slick.Color; import org.newdawn.slick.GameContainer; import org.newdawn.slick.Graphics; import org.newdawn.slick

问题 My implementation of the following can be found on jsfiddle.net I have four divs. My goal is to make them draggable around the page but NOT to allow them to overlap one another. Each can be dragged around the page with a mousemove listener. container.addEventListener('mousemove',mouseMove); function mouseMove(e) { if (!mouseDown) {return;} let coords=e.target.getBoundingClientRect(); let movX=e.movementX; let movY=e.movementY; if (!collision(movX,movY,e.target.classList[1],coords)){ e.target

问题 I'm making a sidescrolling game in Pygame, and if the fox sprite collides with the tree, it is supposed to print "COLLIDE". But it doesn't work. How can I fix this to detect collision between the fox and the tree? Here's the code: if foxsprite1 > xtree and foxsprite1 < xtree + treewidth or foxsprite1 + treewidth > xtree and foxsprite1 + treewidth < xtree + treewidth: print ("COLLIDE") xtree is the x coordinate of the tree, treewidth is the width of the tree, and foxsprite1 is the fox. 回答1: