Moving View

[catalinnic]

Hi I try to move view that changes his position to be indentical (in some instances) with position of the player but in some key specific cases to lock the movement for some directons

void Ai::Move_view()
{
    if(Player1.Rect1.getPosition().y > Map_view.getCenter().y && Map_view.getCenter().y + 360 < Map_margin_y)
        Map_view.move(0, Player1.Movement_speed);
    else if(Player1.Rect1.getPosition().y < Map_view.getCenter().y && Map_view.getCenter().y - 360 > 0)
        Map_view.move(0, -Player1.Movement_speed);
    else if(Player1.Rect1.getPosition().x > Map_view.getCenter().x && Map_view.getCenter().x + 640 < Map_margin_x)
        Map_view.move(Player1.Movement_speed, 0);
    else if(Player1.Rect1.getPosition().x < Map_view.getCenter().x && Map_view.getCenter().x - 640 > 0)
        Map_view.move(-Player1.Movement_speed, 0);
}
 

[Laurent]

Hi

Your post doesn't describe any particular problem. Please give more details about what's wrong, what you expect, what you already tried, etc.

[catalinnic]

The problem:
When I change the "Movement_speed" value to some float like 4.75 the function bounces the view up and down or left to right.

[txes]

It happens because you are moving the view further than the current distance to the player. You should check if the actual distance is smaller than the views movement speed.

[catalinnic]

But I don't know why it acts normally when the value is 4, 5, 6, etc.

[txes]

Imagine the distance between the player and the view is 3 and the view movement speed is 4. In the first call, the code will subtract 4 to the view position so its distance to the player will be 3 - 4 = -1. Next call, the code will add 4 to the view position so its distance to the player will be -1 + 4 = 3, back to its original position in an endless loop. So, in reference to the code you posted, it always happens. It may look it does not, but it does.