Why is this CFrame:lerp() for loop not working properly?
I have a very simple :lerp() for loop that moves a part from 0,0,0 to 100,0,0 over 10 seconds:
1 | part = game.Workspace.Part |
2 |
3 | for i = 0,1,0.1 do |
4 | part.CFrame = part.CFrame:lerp(CFrame.new(100,0,0),i) |
5 | print(i, " ", part.CFrame.p) |
6 | wait(1) |
7 | end |
Now, if the code was to work properly, the part would have moved the block 10 studs every second. Instead, the part moves at a nonlinear pace. Output:
0 0, 0, 0
0.1 10, 0, 0
0.2 28, 0, 0
0.3 49.6000023, 0, 0
0.4 69.7600021, 0, 0
0.5 84.8800049, 0, 0
0.6 93.9520035, 0, 0
0.7 98.1856003, 0, 0
0.8 99.6371155, 0, 0
0.9 99.9637146, 0, 0
1 100, 0, 0
So, instead of moving at the linear pace of 10 studs a second like it should, the part is instead moving at a nonlinear, fluctuating pace, and I don't know why.
1 answer
This is because your starting CFrame for the lerp function is going to be updated every iteration..
Predefine a variable, and go off of that.
1 | local part = workspace.Part |
2 | local priorCF = part.CFrame --Predefine a variable! |
3 |
4 | for i = 0,1,0.1 do |
5 | part.CFrame = priorCF:lerp(CFrame.new(100,0,0),i) |
6 | print(i, " ", part.CFrame.p) |
7 | wait(1) |
8 | end |
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