Lacking in Trigonometry | GameMaker | Page 1

supple solstice May 13, 2024, 6:54 PM

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I would like some help on patching up a function I'm unable to complete. I have a value oscillating between two coordinates with a fixed radius, and the goal is to rotate the angle of said oscillation.

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Right now these two lines of code allow me to have an object make a full circle.

y = ystart + halfpipe_yoff + lengthdir_y(198+hp_offset,angle);
x = xstart + halfpipe_xoff + lengthdir_x(198+hp_offset,angle);

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If I isolate y for example, it'll do just what my problem suggests. It oscillates up and down between 198 and -198 around ystart.

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Same for x, except it'll go left and right, hence the perfect circular motion.

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I think that's the gist of my problem.

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Don't hesitate to @ me !

supple solstice May 13, 2024, 7:18 PM

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I have a better illustration 🗿

indigo owl May 13, 2024, 7:45 PM

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your current code should be able do that by just changing the arguments you pass to the lengthdir

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so instead of passing a hard 198 + hp_offset, you combine that into one variable that you have go back and forth between positive and negative

#Lacking in Trigonometry