一些常用代码

 1             float rectangleWidth=GameVariables.WIDTH/3;
 2             float rectangleHeight=GameVariables.HEIGHT/3;
 3             float cameraX=stage.getCamera().position.x;
 4             float cameraY=stage.getCamera().position.y;
 5             if (cameraX > player.getCenterX()+ rectangleWidth/2) {
 6                 cameraX = player.getCenterX()+ rectangleWidth/2;
 7             }else if (cameraX < player.getCenterX()- rectangleWidth/2) {
 8                 cameraX= player.getCenterX()- rectangleWidth/2;
 9             }
10             if (cameraX-GameVariables.WIDTH/2 <0 ) {
11                 cameraX=GameVariables.WIDTH/2;
12             }else if (cameraX+GameVariables.WIDTH/2 > getMapWidth()) {
13                 cameraX= getMapWidth()- GameVariables.WIDTH/2;
14             }
15             
16             if (cameraY > player.getCenterY() +rectangleHeight/2) {
17                 cameraY = player.getCenterY() +rectangleHeight/2;
18             }else if (cameraY < player.getCenterY() - rectangleHeight/2) {
19                 cameraY = player.getCenterY() - rectangleHeight/2;
20             }
21             if (cameraY-GameVariables.HEIGHT/2<0) {
22                 cameraY=GameVariables.HEIGHT/2;
23             }
24             if (cameraY+GameVariables.HEIGHT/2>getMapHeight()) {
25                 cameraY=getMapHeight()-GameVariables.HEIGHT/2;
26             }
27             stage.getCamera().position.set(cameraX, cameraY, 0);