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43 lines
1.6 KiB
Plaintext
43 lines
1.6 KiB
Plaintext
/proc/getviewsize(view)
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if(!view) // Just to avoid any runtimes that could otherwise cause constant disconnect loops.
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stack_trace("Missing value for 'view' in getviewsize(), defaulting to world.view!")
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view = world.view
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if(isnum(view))
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var/totalviewrange = (view < 0 ? -1 : 1) + 2 * view
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return list(totalviewrange, totalviewrange)
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else
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var/list/viewrangelist = splittext(view, "x")
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return list(text2num(viewrangelist[1]), text2num(viewrangelist[2]))
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/// Takes a string or num view, and converts it to pixel width/height in a list(pixel_width, pixel_height)
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/proc/view_to_pixels(view)
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if(!view)
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return list(0, 0)
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var/list/view_info = getviewsize(view)
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view_info[1] *= ICON_SIZE_X
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view_info[2] *= ICON_SIZE_Y
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return view_info
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/**
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* Frustrated with bugs in can_see(), this instead uses viewers for a much more effective approach.
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* ### Things to note:
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* - Src/source must be a mob. `viewers()` returns mobs.
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* - Adjacent objects are always considered visible.
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*/
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/// The default tile-distance between two atoms for one to consider the other as visible.
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#define DEFAULT_SIGHT_DISTANCE 7
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/// Basic check to see if the src object can see the target object.
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#define CAN_I_SEE(target) ((src in viewers(DEFAULT_SIGHT_DISTANCE, target)) || in_range(target, src))
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/// Checks the visibility between two other objects.
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#define CAN_THEY_SEE(target, source) ((source in viewers(DEFAULT_SIGHT_DISTANCE, target)) || in_range(target, source))
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/// Further checks distance between source and target.
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#define CAN_SEE_RANGED(target, source, dist) ((source in viewers(dist, target)) || in_range(target, source))
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