[1.11.2] GUIScreen partialTicks

[Socratic_Phoenix]

So there's this method in GUIScreen, drawScreen, that I'm using to draw my gui:

public void drawScreen(int mouseX, int mouseY, float partialTicks)

I'm trying to figure out how to have an animated screen that draws an fills in an arrow across the screen, like the furnace gui (though my gui is not a furnace, nor does it have a connected inventory or tile entity). So my question is, what exactly is partialTicks? Is it ticks since the previous drawScreen? Ticks since the opening of the gui? Or something else entirely?

 

Thanks for any help provided!

[diesieben07]

Partial ticks is pretty much exactly what it says.  It tells you "how far along" into the current tick you are in the current frame. 

This is needed because the game may run at a variable frame rate, but you still want animations to run smoothly. For that to work you animate based on ticks, i.e. 20 times a second. But that would effectively lead to 20 FPS animations, which look choppy. So you need to interpolate to the actual frame rate, using partial ticks.

If you have a tick counter that is incremented every tick you can add the partial tick value and get the interpolated tick counter value.

 

Alternatively, if you do not have a tick counter, but just a changing value, you have to store both the current value and the value from last tick. Then you can calculate the current interpolated value using the following formula:

actualValue = previousTickValue + (currentValue - lastTickValue) * partialTicks

[tomotomo]

If I used partialTicks variable on drawScreen method, it won't work anymore.

But I remove the partialTicks from drawScreen and use the Minecraft.getSystemTime(); to it works.

How can I use partialTicks on drawScreen?

[Animefan8888]

3 minutes ago, tomotomo said:

How can I use partialTicks on drawScreen?

My goodness this is old, please don't necro old threads. Instead make your own. And when you do make your own post your code.