碰撞处理程序在 libgdx 中检测得太早

Question

我创建了一个二维布尔数组来检测我的碰撞。在我的玩家碰撞箱的每个角上都有四个检测器，碰撞只是说如果左边的点是真的，你就不能向左移动，反之亦然。右侧工作完美，但左侧在我的玩家真正到达阻止他的平台之前阻止了我的玩家。这是一张显示正在发生的事情的图片（地上还有另外两个命中框，命中框是红色的）

这里是碰撞处理程序的代码

    public void run() {
    /*If entity can fall i.e not on a platform*/
    if(entity instanceof CollidableObject){
        /*Each line is stating that if the current position.x + 1 is true and the y coordinate is true (in grid of course) then
         * there must be something there and so stop falling
         */
        if(/*mapGrid.getMapGrid()[(int) (((CollidableObject) entity).getGridPositionLeft().x)][(int) (((CollidableObject) entity).getGridPositionLeft().y - 1)] || */
           mapGrid.getMapGrid()[(int) (((CollidableObject) entity).getGridPositionLeft().x + 1)][(int) (((CollidableObject) entity).getGridPositionLeft().y)] || 
           mapGrid.getMapGrid()[(int) (((CollidableObject) entity).getGridPositionLeft().x + 1)][(int) (((CollidableObject) entity).getGridPositionLeft().y)]/* || 
           mapGrid.getMapGrid()[(int) (((CollidableObject) entity).getGridPositionRight().x + 3)][(int) (((CollidableObject) entity).getGridPositionLeft().y )]*/){
                    entity.canFall(false);
                    entity.canJump(true);
        }else{
            entity.canFall(true);
            entity.canJump(false);
            }

    }

    if(entity instanceof CollidableObject){

        /*Each line is stating that if the current position.y + 1 is true and the x coordinate is true (in grid of course) then
         * there must be something there and so stop moving right
         */
        if(mapGrid.getMapGrid()[(int) (((CollidableObject) entity).getGridPositionLeft().x + (int) (((CollidableObject) entity).getDimensions().x / MapGrid.TILE_SIZE))]
                   [(int) (((CollidableObject) entity).getGridPositionLeft().y + 1)] || 
           mapGrid.getMapGrid()[(int) (((CollidableObject) entity).getGridPositionLeft().x + (int) (((CollidableObject) entity).getDimensions().x / MapGrid.TILE_SIZE))]
                   [(int) (((CollidableObject) entity).getGridPositionLeft().y + 2)] || 
                   mapGrid.getMapGrid()[(int) (((CollidableObject) entity).getGridPositionLeft().x + (int) (((CollidableObject) entity).getDimensions().x / MapGrid.TILE_SIZE))]
                           [(int) (((CollidableObject) entity).getGridPositionLeft().y + 3)]|| 
                           mapGrid.getMapGrid()[(int) (((CollidableObject) entity).getGridPositionLeft().x + (int) (((CollidableObject) entity).getDimensions().x / MapGrid.TILE_SIZE))]
                                   [(int) (((CollidableObject) entity).getGridPositionLeft().y + 4)]){
                    entity.canMoveRight(false);
        }else
            entity.canMoveRight(true);

        if(entity instanceof CollidableObject){
            /*Each line is stating that if the current position.x is true and the y coordinate is true (or +1 , +2 because
             * of the height of the player) then
             * there must be something there and so stop moving left
             */
            if(mapGrid.getMapGrid()[(int) (((CollidableObject) entity).getGridPositionLeft().x)]
                       [(int) (((CollidableObject) entity).getGridPositionRight().y + 1)] || 
                       mapGrid.getMapGrid()[(int) (((CollidableObject) entity).getGridPositionLeft().x)]
                       [(int) (((CollidableObject) entity).getGridPositionLeft().y + 2)] || 
                       mapGrid.getMapGrid()[(int) (((CollidableObject) entity).getGridPositionLeft().x)]
                       [(int) (((CollidableObject) entity).getGridPositionLeft().y + 3)]){
                        entity.canMoveLeft(false);
            }else
                entity.canMoveLeft(true);
        }
    }

总体问题是玩家不会离开，因为它检查得太快了，如果不尽快检查，玩家就会在平台中途结束，所以我做错了什么？！非常感谢任何帮助！

Answer 1

答案是在检查左侧碰撞时从右下角而不是左下角进行检查，因为向左移动比向右移动时更新速度更快。这是因为要在向右移动时更新网格位置，您必须在网格位置更新之前一直穿过单元格（它在点击单元格的右上侧时更新）=。如果你向左移动，你会知道这一点，你会立即点击单元格的右上部分并导致即时更新。从右边开始更新，更新一个单元格的时间会更长，这正是获得解决方案所需要的。

碰撞处理程序在 libgdx 中检测得太早

Collision handler detecting too early in libgdx

java

collision

libgdx