CS2D
Scripts Sin and Cos bug... or something.
Sin and Cos bug... or something.
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kalis: Just go learn some trigonometry and see examples of trig functions usage in scripts. Infinite Rain: Unless I'm missing something or don't know something, that doesn't seem to be possible. Following logic in a perfect situation:
You are jumping either directly up or directly down - 0 and 180 degrees respectively, x and, by extension, sine, is not used; Since only cosine is used, we need to analyse its values; If you look at the unit circle, cosine of up, which is 0 degrees, is 1, thus you'd propel yourself 1 pixel up. Cosine of down, on the other hand, which is 180°, is -1, and thus you'd propel yourself down 1 pixel. EngiN33R has written kalis: Just go learn some trigonometry and see examples of trig functions usage in scripts. Infinite Rain: Unless I'm missing something or don't know something, that doesn't seem to be possible. Following logic in a perfect situation: You are jumping either directly up or directly down - 0 and 180 degrees respectively, x and, by extension, sine, is not used; Since only cosine is used, we need to analyse its values; If you look at the unit circle, cosine of up, which is 0 degrees, is 1, thus you'd propel yourself 1 pixel up. Cosine of down, on the other hand, which is 180°, is -1, and thus you'd propel yourself down 1 pixel.x = x + math.sin(math.rad(rot)) * distance y = y + -math.cos(math.rad(rot)) * distance
x = x + math.cos(math.rad(rot)) * distance y = y + math.sin(math.rad(rot)) * distance
x = x + math.cos(math.rad(rot)-math.pi/2) * distance y = y + math.sin(math.rad(rot)-math.pi/2) * distance
EngiN33R has writtenlocal x = player(id,"x") + math.cos(math.rad(rot)-math.pi/2) * distance local y = player(id,"y") + math.sin(math.rad(rot)-math.pi/2) * distance
- math.pi / 2
CS2D uses the same unit circle as CC (or, rather, vice versa, right?), where 0 is on top instead of on the right and it goes clockwise; When looking in the direction of the default unit circle's 0 (right), we get the sine and cosine values of 90; We therefore must subtract 90 in order for the cosine and sine values to propel us in the direction of the default unit circle's 0° - right - when looking at default 0° - right.
Offlineaddhook("serveraction","propel")
function propel(id,a)
if a==1 then
local distance = 32
local rot = player(id,"rot")
local x = player(id,"x") + math.cos(math.rad(rot)-math.pi/2) * distance
msg("math.cos(math.rad(rot)-math.pi/2) = "..math.cos(math.rad(rot)-math.pi/2))
local y = player(id,"y") + math.sin(math.rad(rot)-math.pi/2) * distance
msg("math.sin(math.rad(rot)-math.pi/2) = "..math.sin(math.rad(rot)-math.pi/2))
msg("x displacement = "..x-player(id,"x"))
msg("y displacement = "..y-player(id,"y"))
parse("setpos "..id.." "..x.." "..y)
end
end
Infinite Rain has written EngiN33R has written kalis: Just go learn some trigonometry and see examples of trig functions usage in scripts. Infinite Rain: Unless I'm missing something or don't know something, that doesn't seem to be possible. Following logic in a perfect situation: You are jumping either directly up or directly down - 0 and 180 degrees respectively, x and, by extension, sine, is not used; Since only cosine is used, we need to analyse its values; If you look at the unit circle, cosine of up, which is 0 degrees, is 1, thus you'd propel yourself 1 pixel up. Cosine of down, on the other hand, which is 180°, is -1, and thus you'd propel yourself down 1 pixel.x = x + math.sin(math.rad(rot)) * distance y = y + -math.cos(math.rad(rot)) * distance
x = x + math.cos(math.rad(rot)) * distance y = y + math.sin(math.rad(rot)) * distance
new_rot = (rot - 90) % 360 x = x + math.cos(math.rad(new_rot)) * distance y = y + math.sin(math.rad(new_rot)) * distance
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