smi collision

Author: Chen yuefeng From:Http://blog.csdn.net/mailbomb In the game, collision detection is often required. For example, to determine whether there are obstacles in the front and whether a bullet hits the plane, it is to detect whether two objects collide, then, different processing is performed based on the detection results. Collision detection objects may have some shapes and complexities. These

IntroductionThis article describes how to perform precise and efficient Collision Detection in 2D action games. Here, the collision is based on Polygon rather than on the genie. The two are designed differently. The collision detection based on the genie is completed by overlapping pixels between the elves. The polygon uses vector mathematics to accurately calcul

HTML5 Canvas color ball Collision Motion effect, html5canvas Script IntroductionHTML5 Canvas color ball Collision Motion effect is a sports ball animation effect based on canvas and object-oriented production. Effect display http://hovertree.com/texiao/html5/39/ is as follows: The Code is as follows:

]; /* uicollisionbehavior */ _ground = [[Uicollisionbehavior alloc] initwithitems:@[apple]]; _ground.translatesreferenceboundsintoboundary = YES; [_animator Addbehavior:_ground];} Here, the code above creates a collision behavior. It defines the nature of one or more boundary interactions, which is not shown to add boundaries to each space, but implicitly invokes a Uicollisionbehavior attribute translatesreferenceboundsintoboundary

Given the radius of a circular medal and the radius of a circular area, and the radius of a coin, the desktop is smooth and the speed (size and direction, VX, Vy) of the coin is given) and coordinates (The Circle area and the circle medal are the same and the heart serves as the source point), ask how long the coin slides in the circle area (any part is in the circle area ), when a coin hits a circle, it will rebound, and the energy will not change (the speed will not change) The first time I ma

Math in libgdx encapsulates the polygon class, which is described by Multiple Fixed Points. During collision between objects, the object contour is sometimes irregular, at this time, we can use a polygon to outline its approximate contour and simulate it. The polygon function includes the point contains function. Through this function, we can determine whether two changeable rows collide, that is, whether each point of two polygon is in another polygo

Label: style Io color ar Div on cti ef Function drag (OBJ ){ OBJ. onmousedown = function (EV ){VaR EV = EV | event;// The distance from the mouse position to the image's sidesVaR OL = eV. clientx-This. offsetleft;VaR ot = eV. clienty-This. offsettop; // Use global capture to occupy the next event in non-standard IE, which is equivalent to blocking the default browser behaviorIf (obj. setcapture ){OBJ. setcapture ();} Document. onmousemove = function (EV ){VaR EV = EV | event;// Place the

Drag + collision + gravity acceleration, Drag and Drop gravity Acceleration Press the mouse at the title, drag it, and execute the collision + gravity acceleration event at the moment you put it down. What is the relationship between gravity and acceleration? Acceleration is the result of the second-second acceleration of 9.8, which is caused by the force of the earth's objects per kilogram being subj

The collision effect of the molecular motion ball implemented by jQuery, The jquery ball This article describes the Collision Effect of the molecular motion ball implemented by jQuery. We will share this with you for your reference. The details are as follows: Let's take a look. Because the ball is in motion, it's not good. Here we will draw a general line to show the general meaning. If you want to see the

Collision is a very important part. Let me briefly introduce it. Circleactivity Code ; Package yy. circle; import android. app. activity; import android. OS. bundle; import android. view. view; import android. view. window; import android. view. windowmanager; public class circleactivity extends activity {/** called when the activity is first created. * // @ override public void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate