game-of-prod/src/main/java/ruscz/game/gameOfProd/Windows/Camera.java

package ruscz.game.gameOfProd.Windows;

import static ruscz.game.gameOfProd.Windows.WindowOfFreeMove.*;

public class Camera {
    private WindowOfFreeMove window;
    private WindowOfFreeMove.Canvas canvas;
    private boolean isBound;
    private int endX;
    private int endY;
    private double time;
    private int startX;
    private int startY;
    private boolean isReturning;
    private static int count = 0;
    private boolean isStopped;

    public Camera(WindowOfFreeMove window, WindowOfFreeMove.Canvas canvas) {
        this.window = window;
        this.canvas = canvas;
        this.isBound = true;
    }

    public void moveCamera() {
        if (isBound) {
            moveBoundCamera();
        }
        else {
            if (!isStopped)
                moveFreeCamera();
        }
    }

    public void moveBoundCamera() {
        int cameraOffsetX = (-1) * CELL_SIZE * (window.getMapManager().getActualMap().getPerson().getX() - WINDOW_WIDTH / 2);
        int cameraOffsetY = (-1) * CELL_SIZE * (window.getMapManager().getActualMap().getPerson().getY() - WINDOW_HEIGHT / 2);
        int direction = window.getMapManager().getActualMap().getPerson().getDirectionMoveLast();
        int size = (-1) * window.getMapManager().getActualMap().getPerson().getSize();
        int Ysize = 0;
        int Xsize = 0;
        switch (direction) {
            case WindowOfFreeMove.KEY_LEFT:
                Xsize = size;
                break;
            case WindowOfFreeMove.KEY_RIGHT:
                Xsize -= size;
                break;
            case WindowOfFreeMove.KEY_UP:
                Ysize = size;
                break;
            case WindowOfFreeMove.KEY_DOWN:
                Ysize -= size;
                break;
        }
        if (!window.getMapManager().getActualMap().getPerson().getIsMoving()) {
            Xsize = 0;
            Ysize = 0;
        }
        if (cameraOffsetX + Xsize >= 0 || cameraOffsetX > 0) {
            cameraOffsetX = 0;
            Xsize = 0;
        }
        else if (CELL_SIZE * WINDOW_WIDTH - (cameraOffsetX + Xsize) >= CELL_SIZE * CANVAS_WIDTH || CELL_SIZE * WINDOW_WIDTH - cameraOffsetX > CELL_SIZE * CANVAS_WIDTH) {
            cameraOffsetX = (-1) * (CELL_SIZE * CANVAS_WIDTH - CELL_SIZE * WINDOW_WIDTH);
            Xsize = 0;
        }
        if (cameraOffsetY + Ysize >= 0 || cameraOffsetY > 0) {
            cameraOffsetY = 0;
            Ysize = 0;
        }
        else if (CELL_SIZE * WINDOW_HEIGHT - (cameraOffsetY + Ysize) >= CELL_SIZE * CANVAS_HEIGHT || CELL_SIZE * WINDOW_HEIGHT - cameraOffsetY > CELL_SIZE * CANVAS_HEIGHT) {
            cameraOffsetY = (-1) * (CELL_SIZE * CANVAS_HEIGHT - CELL_SIZE * WINDOW_HEIGHT);
            Ysize = 0;
        }
        if (WINDOW_WIDTH > CANVAS_WIDTH) {
            cameraOffsetX = (WINDOW_WIDTH - CANVAS_WIDTH) * CELL_SIZE / 2;
            Xsize = 0;
        }
        if (WINDOW_HEIGHT > CANVAS_HEIGHT) {
            cameraOffsetY = (WINDOW_HEIGHT - CANVAS_HEIGHT) * CELL_SIZE / 2;
            Ysize = 0;
        }
        canvas.setLocation(cameraOffsetX + Xsize, cameraOffsetY + Ysize);
    }

    public void moveFreeCamera() {
        int coordX = (int) (canvas.getLocation().getX());
        int coordY = (int) (canvas.getLocation().getY());
        if (coordX > 0) {
            endX = 0;
            if (isReturning) boundCamera();
        }
        else if (CELL_SIZE * WINDOW_WIDTH - coordX + 8 >= CELL_SIZE * CANVAS_WIDTH) {
            if (isReturning) boundCamera();
            else isStopped = true;
        }
        if (coordY > 0) {
            if (isReturning) boundCamera();
            else isStopped = true;
        }
        else if (CELL_SIZE * WINDOW_WIDTH - coordY >= CELL_SIZE * CANVAS_WIDTH) {
            if (isReturning) boundCamera();
            else isStopped = true;
        }
        if (coordX != endX || coordY != endY) {
            int distanceX = endX - startX;
            int distanceY = endY - startY;
            if (Math.abs(distanceX) < CELL_SIZE && Math.abs(distanceY) < CELL_SIZE) {
                isBound = true;
                isReturning = false;
                return;
            }
            if (count >= time / 2) {
                int stepX = (int) (distanceX / CELL_SIZE / (time / 2));
                int stepY = (int) (distanceY / CELL_SIZE / (time / 2));
                canvas.setLocation(coordX + stepX, coordY + stepY);
                count = 0;
            }
            count++;
        }
        if (coordX == endX && coordY == endY && isReturning) boundCamera();
    }

    public void returnFreeCamera() {
        setCameraStart();
        endX = (-1) * CELL_SIZE * (window.getMapManager().getActualMap().getPerson().getX() - WINDOW_WIDTH / 2);
        endY = (-1) * CELL_SIZE * (window.getMapManager().getActualMap().getPerson().getY() - WINDOW_HEIGHT / 2);
        if (endX > 0) {
            endX = 0;
        }
        else if (CELL_SIZE * WINDOW_WIDTH - endX > CELL_SIZE * CANVAS_WIDTH) {
            endX = (-1) * (CELL_SIZE * CANVAS_WIDTH - CELL_SIZE * WINDOW_WIDTH);
        }
        if (endY > 0) {
            endY = 0;
        }
        else if (CELL_SIZE * WINDOW_WIDTH - endY > CELL_SIZE * CANVAS_WIDTH) {
            endY = (-1) * (CELL_SIZE * CANVAS_HEIGHT - CELL_SIZE * WINDOW_HEIGHT);
        }
        time = 1;
        isReturning = true;
    }

    public void boundCamera() {
        isBound = true;
        isReturning = false;
        window.setCanPersonMove(true);
        window.getMapManager().getActualMap().getPerson().setInEvent(false);
    }

    public void setCameraStart() {
        this.startX = (int) (canvas.getLocation().getX());
        this.startY = (int) (canvas.getLocation().getY());
    }

    public void setCameraEnd(int x, int y) {
        this.endX = x;
        this.endY = y;
    }

    public void setCameraTime(double time) {
        this.time = time;
    }

    public void setCameraBound(boolean bound) { this.isBound = bound; }

    public boolean getCameraBound() { return isBound; }

    public void setCameraStopped(boolean stopped) { isStopped = stopped; }
}