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35 lines
1.1 KiB
Plaintext
35 lines
1.1 KiB
Plaintext
/datum/sun
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var/angle
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var/dx
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var/dy
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var/rate
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var/solar_next_update // last time the sun position was checked and adjusted
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/datum/sun/New()
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rate = rand(50,200)/100 // 50% - 200% of standard rotation
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if(prob(50)) // same chance to rotate clockwise than counter-clockwise
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rate = -rate
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angle = rand (0,360) // the station position to the sun is randomised at round start
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// calculate the sun's position given the time of day
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// at the standard rate (100%) the angle is increase/decreased by 6 degrees every minute.
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// a full rotation thus take a game hour in that case
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/datum/sun/proc/calc_position()
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angle = (360 + angle + rate * 6) % 360 // increase/decrease the angle to the sun, adjusted by the rate
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// now calculate and cache the (dx,dy) increments for line drawing
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var/s = sin(angle)
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var/c = cos(angle)
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// Either "abs(s) < abs(c)" or "abs(s) >= abs(c)"
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// In both cases, the greater is greater than 0, so, no "if 0" check is needed for the divisions
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if( abs(s) < abs(c))
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dx = s / abs(c)
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dy = c / abs(c)
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else
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dx = s/abs(s)
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dy = c / abs(s)
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