Add and subtract numbers through slider - unity3d

Question

For example my health number is 50.
and i need to use slider to add or minus the health.
but my edit slider number is 0 - 15
so how can i add or minus the health number through slider number?
when i slider right (0 to 15) , health number add the slider end number. if i slide to 10 is 50 + 10
and slider left (15 to 0),health number return, and 0 is no change.

Answer 1

Assuming your health number ranges from 0-100, you can use the following formula to map the slider value sliderVal to the health value healthVal:
healthVal = (sliderVal / 15) * 100 // 100 is the max health
For example, if the slider value is 7, the corresponding health value would be:
healthVal = (7 / 15) * 100 = 46.67
You can then use this calculated health value to add or subtract from your current health number, depending on the direction of the slider.
For example, if the slider is used to increase health, you can add the calculated health value to your current health number:
newHealthNum = currentHealthNum + healthVal
And if the slider is used to decrease health, you can subtract the calculated health value from your current health number:
newHealthNum = currentHealthNum - healthVal
Note that you may need to round the calculated health value to an integer if your health number is an integer value.
Here is a more detailed example:
public Slider healthSlider;
private float previousSliderValue;
private void Update()
{
UpdateHealth();
}
public void UpdateHealth() {
float currentSliderValue = healthSlider.value;
// Determine direction of slider
float sliderDirection = currentSliderValue - previousSliderValue;
if (sliderDirection > 0) {
// Slider is moving in positive direction (adding health)
float healthToAdd = (sliderDirection / 15) * 100;
AddHealth((int)healthToAdd); // Assuming health is an
integer value
} else if (sliderDirection < 0) {
// Slider is moving in negative direction (subtracting
health)
float healthToSubtract = (-sliderDirection / 15) * 100;
SubtractHealth((int)healthToSubtract);
}
// Store current slider value for next update
previousSliderValue = currentSliderValue;
}
public void AddHealth(int healthToAdd) {
// Add health to current health number
// ...
}
public void SubtractHealth(int healthToSubtract) {
// Subtract health from current health number
// ...
}