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Java tile game - collision detection

I am making a java game using tiles. I am having problems with the collision element. I define rectangles for each tile on the map and another rectangle for the player. What I came across is to know which side the player is on when he clicks on the rectangle and then pushes the player in the direction the player came. I already made a method that checks how much the character is inside the rectangle, so he can know how to push it out, but I can’t figure out how to determine which side the character is on.

here is my current methoe collision - note rect1 is a symbol and rect2 is a tile

public void collision(Rectangle rect1, Rectangle rect2) {
    float xAdd;
    float xAdd2;
    float yAdd;
    float yAdd2;

    boolean hitRight = false;
    boolean hitLeft = false;
    boolean hitTop = false;
    boolean hitBot = false;

    Vector2f rect1Origin = new Vector2f(rect1.x, rect1.y);
    Vector2f rect2Origin = new Vector2f(rect2.x, rect2.y);
    Vector2f rect1Mid = new Vector2f((rect1.x + rect1.width) / 2,(rect1.y + rect1.height) / 2);
    Vector2f rect2Mid = new Vector2f((rect2.x + rect2.width) / 2,(rect2.y + rect2.height) / 2);

    Vector2f rect1A = new Vector2f(rect1Origin.x + rect1.width, rect1.y);
    Vector2f rect1B = new Vector2f(rect1Origin.x, rect1Origin.y+ rect1.height);
    Vector2f rect1C = new Vector2f(rect1Origin.x + rect1.width,rect1Origin.y + rect1.height);

    Vector2f rect2A = new Vector2f(rect2Origin.x + rect2.width, rect2.y);
    Vector2f rect2B = new Vector2f(rect2Origin.x, rect2Origin.y
            + rect2.height);
    Vector2f rect2C = new Vector2f(rect2Origin.x + rect2.width,
            rect2Origin.y + rect2.height);

    xAdd = rect2C.x - rect1B.x;
    xAdd2 = rect1C.x - rect2B.x;

    yAdd = rect2A.y - rect1B.y;
    yAdd2 = rect2C.y - rect1A.y;


    if (rect1Mid.y < rect2Mid.y) {
        if (rect1.intersects(rect2)) {
            y_pos += yAdd;
        }
    }
    if (rect1Mid.y > rect2Mid.y) {
        if (rect1.intersects(rect2)) {
            System.out.println(yAdd2);
            y_pos += yAdd2;
        }

    }
    if(rect1Mid.x > rect2Mid.x){
        if(rect1.intersects(rect2)){
            hitRight = true; x_pos += xAdd;
        }
    } 
    if(rect1Mid.x< rect2Mid.x){ 
          if(rect1.intersects(rect2)) {
              x_pos += -xAdd2;
          } 
    }
}

Any help would be greatly appreciated.

thank

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4

- ( , ..) . , - , .

: collision boolean - , ,

if (!collision(character, tile))
{
    doMove(character);
}
else
{
    //custom handling if required
}

Edit2: , , , move(originalPosition, desiredPosition, tile), originalPosition tile.

, , .

+2

, Sprite ( ) : xPos, yPos, xVec, yVec. , , .

sprite.xPos += sprite.xVec;
sprite.yPos += sprite.yVec;

, (, , (rect1.intersects(rect2)) if). () (, , , ).

, 2 (, sprite1 sprite2), intersects() . , .

+1

, . .

  • . (Rx, Ry).

  • . (Sx, Sy).

  • Rx, Ry, Sx, Sy, , Sx Sy Rx Ry

  • ex:

    if Sx < Rx then
  Sx = left side of Rx
+1

, , , , , . . , , , , , . :

    if (isKeyPressed(KeyEvent.VK_LEFT)) {
        if(!collisionWithBlocks(1)){
            pl.x = pl.x - updatePlayerPosition;
        }
    }
    if (isKeyPressed(KeyEvent.VK_RIGHT)) {
        if(!collisionWithBlocks(0)){
            pl.x = pl.x + updatePlayerPosition;
        }
    }
    if (isKeyPressed(KeyEvent.VK_UP)) {
        if(!collisionWithBlocks(3)){
            pl.y = pl.y - updatePlayerPosition;
        }
    }
    if (isKeyPressed(KeyEvent.VK_DOWN)) {
        if(!collisionWithBlocks(2)){
            pl.y = pl.y + updatePlayerPosition;
        }
    }

collisionWithBlocks():

public boolean collisionWithBlocks(int side){
    for(Block b : main.blocks){
        Rectangle block = b.getBounds();
        Rectangle player = null;
        if(side == 0){
            player = new Rectangle(pl.x + updatePlayerPosition, pl.y, pl.getWidth(), pl.getHeight());
        } else if(side == 1){
            player = new Rectangle(pl.x - updatePlayerPosition, pl.y, pl.getWidth(), pl.getHeight());
        } else if(side == 2){
            player = new Rectangle(pl.x, pl.y + updatePlayerPosition, pl.getWidth(), pl.getHeight());
        } else if(side == 3){
            player = new Rectangle(pl.x, pl.y - updatePlayerPosition, pl.getWidth(), pl.getHeight());
        }

        if(player.intersects(block)){
            return true;
        }
    }

    return false;
}

updatePlayerPosition 2, , . , , .

+1

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