벽돌게임 만들기 4 - Ball 위치 값 설정, 블록 설정

if(dir == 0) { // Up-Right
				ball.x += ballSpeed;
				ball.y -= ballSpeed;
			}else if(dir == 1) { // Down-Right
				ball.x += ballSpeed;
				ball.y += ballSpeed;
			}else if(dir == 2) { // Up-Left
				ball.x -= ballSpeed;
				ball.y -= ballSpeed;
			}else if(dir == 3) { // Down-Left
				ball.x -= ballSpeed;
				ball.y += ballSpeed;
			}

볼이 벽에 충돌됐을 때 위치값 설정

		public void checkCollision(){
			if(dir == 0) { // Up-Right
				//벽에 충돌됐을때 
				if(ball.y < 0 ) {
					dir = 1;
				}

	       if(ball.x > CANVAS_WIDTH-BALL_WIDTH) { //wall right
					dir =2;
				}	
			//Bar none	
			}else if(dir == 1) { // Down-Right
				//벽에 충돌됐을때 
				if(ball.y > CANVAS_HEIGHT-BALL_HEIGHT - BALL_HEIGHT) { //wall bottom
					dir = 0;
				}
				if(ball.x > CANVAS_WIDTH-BALL_WIDTH) { //wall 
					dir =3; //방향이 꺾이도록
				}	
			}else if(dir == 2) { // Up-Left
				//wall
				if(ball.y < 0 ) {
					dir = 3;
				}
				if(ball.x < 0 ) {
					dir = 0;
				}	
			//bar
            
			}else if(dir == 3) { // Down-Left
				//wall
				
				if(ball.y > CANVAS_HEIGHT-BALL_HEIGHT - BALL_HEIGHT) { //wall bottom
					dir = 2;
				}
				if(ball.x < 0 ) { //wall left
					dir = 1;
				}
			}
		};

볼이 Bar에 충돌됐을 때 위치값

먼저, Ball 설정부분에 위치값 미리 메서드를 만들어서 불러오면 덜 헷갈리기위해

		static class Ball {
//생략
			
			//충돌 체크 미리 만들기
			Point getCenter() {
				return new Point(x+(BALL_WIDTH/2), y+(BALL_HEIGHT/2));
			}
			
			Point getBottomCenter() {
				return new Point( x + (BALL_WIDTH/2), y + (BALL_HEIGHT));
			}
			Point getTopCenter() {
				return new Point(x + (BALL_HEIGHT/2), y);
			}
			
			Point getLeftCenter() {
				return new Point(x , y + (BALL_HEIGHT/2));
			}
			
			Point getRightCenter() {
				return new Point(x + (BALL_WIDTH), y + (BALL_HEIGHT/2));
			}
			
		}

서로 영역이 겹치는지 확인하는 함수

public boolean duplRect(Rectangle rect1, Rectangle rect2) {
	return rect1.intersects(rect2);// 서로 영역이 겹치는 체크
}

		public void checkCollision(){
			if(dir == 0) { // Up-Right
				//벽에 충돌됐을때 
				if(ball.y < 0 ) {
					dir = 1;
				}
				if(ball.x > CANVAS_WIDTH-BALL_WIDTH) { //wall right
					dir =2;
				}
				
			//Bar none
				
			}else if(dir == 1) { // Down-Right
				//벽에 충돌됐을때 
				if(ball.y > CANVAS_HEIGHT-BALL_HEIGHT - BALL_HEIGHT) { //wall bottom
					dir = 0;
				}
				if(ball.x > CANVAS_WIDTH-BALL_WIDTH) { //wall 
					dir =3; //방향이 꺾이도록
				}
				//Bar에 충돌 될 때
				if(ball.getBottomCenter().y >= bar.y) {
					if(duplRect(new Rectangle(ball.x, ball.y, ball.width, ball.height), 
							    new Rectangle(bar.x , bar.y, bar.width, bar.height))) {
						dir = 0;
					}
				}
	
			}else if(dir == 2) { // Up-Left
				//wall
				if(ball.y < 0 ) {
					dir = 3;
				}
				if(ball.x < 0 ) {
					dir = 0;
				}
				
				//Bar none
				
			}else if(dir == 3) { // Down-Left
				//wall
				if(ball.y > CANVAS_HEIGHT-BALL_HEIGHT - BALL_HEIGHT) { //wall bottom
					dir = 2;
				}
				if(ball.x < 0 ) { //wall left
					dir = 1;
				}
				
				//Bar에 충돌 될 때
				if(ball.getBottomCenter().y >= bar.y) {
					if(duplRect(new Rectangle(ball.x, ball.y, ball.width, ball.height), 
							    new Rectangle(bar.x , bar.y, bar.width, bar.height))) {
						dir = 2;
					}
				}
				
			}
		};

블록에 충돌 됐을 때 메서드 설정

		// 블록에 충돌 됐을 때
		public void checkCollisionBlock() {
			// 0:Up-Right, 1:Down-Right, 2:Up-Left, 3:Down-Left
			for (int i = 0; i < BLOCK_ROWS; i++) {
				for (int j = 0; j < BLOCK_COLUMNS; j++) {
					Block block = blocks[i][j];
					if (block.isHidden == false) {
						if (dir == 0) { // Up-Right
							if (duplRect(new Rectangle(ball.x, ball.y, ball.width, ball.height),
									new Rectangle(block.x, block.y, block.width, block.height))) {
								if(ball.x > block.x + 2 && ball.getRightCenter().x <= block.x + block.width -2) {
									//block bottom collision
									dir =1;
								}else {
									//block left collision
									dir =2;
								}
								block.isHidden = true;
							}

						} else if (dir == 1) { // Down-Right
							if (duplRect(new Rectangle(ball.x, ball.y, ball.width, ball.height),
									new Rectangle(block.x, block.y, block.width, block.height))) {
								if(ball.x > block.x + 2 && 
										ball.getRightCenter().x <= block.x + block.width -2) {
									//block top collision
									dir =0;
								}else {
									//block left collision
									dir =3;
								}
								block.isHidden = true;
							}
						} else if (dir == 2) { // Up-Left
							if (duplRect(new Rectangle(ball.x, ball.y, ball.width, ball.height),
									new Rectangle(block.x, block.y, block.width, block.height))) {
								if(ball.x > block.x + 2 && 
										ball.getRightCenter().x <= block.x + block.width -2) {
									//block bottom collision
									dir =3;
								}else {
									//block right collision
									dir =0;
								}
								block.isHidden = true;
							}
						} else if (dir == 3) { // Down-Left
							if (duplRect(new Rectangle(ball.x, ball.y, ball.width, ball.height),
									new Rectangle(block.x, block.y, block.width, block.height))) {
								if(ball.x > block.x + 2 && 
										ball.getRightCenter().x <= block.x + block.width -2) {
									//block top collision
									dir =3;
								}else {
									//block right collision
									dir =1;
								}
								block.isHidden = true;
							}
						}
					}
				}
			}
		};

블록에 충돌됐을때 잘 되는걸 볼수 있다.!!!!😄