如何在libgdx中进行旋转对象的碰撞检测(How to get collision detection of a rotating object in libgdx)

我有一个将要旋转的游戏对象。

import com.badlogic.gdx.Gdx; import com.badlogic.gdx.graphics.g2d.SpriteBatch; import com.badlogic.gdx.graphics.g2d.TextureRegion; public class Object extends AbstractGameObject{// AbstractGameObject is a class to apply physics on the object private TextureRegion object; float rot; public Object(){ init(); } private void init() { dimension.set(2f, 2f); object = Assets.instance.object.object;//it just retrieves the texture region from assets class // Set bounding box for collision detection bounds.set(0,0, dimension.x, dimension.y); } @Override public void render(SpriteBatch batch) { TextureRegion reg = null; final float degressPerSecond = 120.0f; rot = (rot + Gdx.graphics.getDeltaTime() * degressPerSecond) % 360; reg = object; batch.draw(reg.getTexture(), position.x, position.y, origin.x, origin.y, dimension.x, dimension.y, scale.x, scale.y, rot, reg.getRegionX(), reg.getRegionY(), reg.getRegionWidth(), reg.getRegionHeight(), false, false); } }

Rectangle bounds = new Rectangle（）; //表示wt我的意思是边界

通过浮动腐烂物体将旋转。 by，因为边界设置为固定点，并且边界没有旋转。我的问题是，当我的charac接触它时，这个对象开始旋转。应该发生的事情。谢谢你。

I have a game object which is going to rotate.

import com.badlogic.gdx.Gdx; import com.badlogic.gdx.graphics.g2d.SpriteBatch; import com.badlogic.gdx.graphics.g2d.TextureRegion; public class Object extends AbstractGameObject{// AbstractGameObject is a class to apply physics on the object private TextureRegion object; float rot; public Object(){ init(); } private void init() { dimension.set(2f, 2f); object = Assets.instance.object.object;//it just retrieves the texture region from assets class // Set bounding box for collision detection bounds.set(0,0, dimension.x, dimension.y); } @Override public void render(SpriteBatch batch) { TextureRegion reg = null; final float degressPerSecond = 120.0f; rot = (rot + Gdx.graphics.getDeltaTime() * degressPerSecond) % 360; reg = object; batch.draw(reg.getTexture(), position.x, position.y, origin.x, origin.y, dimension.x, dimension.y, scale.x, scale.y, rot, reg.getRegionX(), reg.getRegionY(), reg.getRegionWidth(), reg.getRegionHeight(), false, false); } }

Rectangle bounds = new Rectangle();//to say wt i mean by bounds

by the float rot the object is going to rotate. by as the bounds is set to fixed point and as bounds doesn't have a rotation. my problem is wen this object starts rotating when my charac touches it. something should happens. thank u.

最满意答案

您可以从矩形创建多边形。然后，将旋转应用于多边形。要检查点是否在内部，只需使用polygon.contains（x，y）并检查它是否与其他多边形重叠，请使用Intersector类。 http://libgdx.badlogicgames.com/nightlies/docs/api/com/badlogic/gdx/math/Intersector.html

You can create a polygon from your rectangle. Then, apply the rotation to the polygon. To check if a point is inside just use polygon.contains(x,y) and to check if it is overlapping with other polygon, use the Intersector class. http://libgdx.badlogicgames.com/nightlies/docs/api/com/badlogic/gdx/math/Intersector.html

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