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[theman515]

hey guys, i was wondering how to simulate a jump based on physics and weight. IE if a guy that weighs 200 pounds jump he would not jump as high as a guy weigh 100 pounds.

my game is of course assuming that the upwards force is a constant. or am i making this way too complicated and just make it a x+=#?

please and thank you! 

[SirEel]

well, to do that you probably need a force type model, which means when jumping apply some force F over an amount of time (instantaneous force could work too, I guess) and F = ma, which is force = mass * acceleration. so Force/mass = acceleration. As acceleration needs time to actually bring the velocity up, you may want to kludge it instead.

Work out a time to apply acceleration over, then v = (Ft)/m, so just use some value like 0.5 for t, and use whatever your jump force is for F (sign should match that of v, so make it point upwards) and you're done!

[theman515]

so would V be what i add to y?

[SirEel]

essentially, yes. the way I'd write it, v would be what you add to your position, but it doesn't matter. Essentially, if you use force as a vector, v will be a vector. if force is just the magnitude of force, v will be a speed, in the direction of that force. Hope that helps!

[theman515]

thanks man. you've been a great help!