twodcraft/src/main/java/cz/jzitnik/tui/ScreenMovingCalculationProvider.java

package cz.jzitnik.tui;

public class ScreenMovingCalculationProvider {
    public static int[] calculate(int x, int y, int terminalHeight, int terminalWidth, int worldX, int worldY) {
        int spriteWidth = 50;
        int spriteHeight = 25;

        int viewXRadius = (terminalWidth / 2) / spriteWidth;
        int viewYRadius = ((terminalHeight - 30) / 2) / spriteHeight;

        // Ensure at least one sprite is visible
        viewXRadius = Math.max(viewXRadius, 1);
        int viewUpRadius = Math.max(viewYRadius, 1);
        int viewDownRadius = Math.max(viewYRadius, 1);

        // Calculate visible area boundaries
        int startX = Math.max(0, x - viewXRadius);
        int endX = Math.min(worldX, x + viewXRadius + 1);
        int startY = Math.max(0, y - viewUpRadius);
        int endY = Math.min(worldY, y + viewDownRadius + 1);

        return new int[] {startX, endX, startY, endY};
    }
}