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Polaris/code/modules/mob/freelook/visualnet.dm
Kelenius acc78a8000 Changes types of ghosts and eyes
``/mob/dead/observer`` -> ``/mob/observer/dead``
``/mob/eye`` -> ``/mob/observer/eye``

Reason being that they are similar in that they both don't interact with
the world in any way. Some procs were shared, some checks as well, and
it overall makes more sense this way. Plus, there were no ``/mob/dead``
mobs.
2016-02-20 15:36:05 +03:00

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// VISUAL NET
//
// The datum containing all the chunks.
/datum/visualnet
// The chunks of the map, mapping the areas that an object can see.
var/list/chunks = list()
var/ready = 0
var/chunk_type = /datum/chunk
/datum/visualnet/New()
..()
visual_nets += src
/datum/visualnet/Destroy()
visual_nets -= src
..()
// Checks if a chunk has been Generated in x, y, z.
/datum/visualnet/proc/chunkGenerated(x, y, z)
x &= ~0xf
y &= ~0xf
var/key = "[x],[y],[z]"
return (chunks[key])
// Returns the chunk in the x, y, z.
// If there is no chunk, it creates a new chunk and returns that.
/datum/visualnet/proc/getChunk(x, y, z)
x &= ~0xf
y &= ~0xf
var/key = "[x],[y],[z]"
if(!chunks[key])
chunks[key] = new chunk_type(null, x, y, z)
return chunks[key]
// Updates what the aiEye can see. It is recommended you use this when the aiEye moves or it's location is set.
/datum/visualnet/proc/visibility(mob/observer/eye/eye)
// 0xf = 15
var/x1 = max(0, eye.x - 16) & ~0xf
var/y1 = max(0, eye.y - 16) & ~0xf
var/x2 = min(world.maxx, eye.x + 16) & ~0xf
var/y2 = min(world.maxy, eye.y + 16) & ~0xf
var/list/visibleChunks = list()
for(var/x = x1; x <= x2; x += 16)
for(var/y = y1; y <= y2; y += 16)
visibleChunks += getChunk(x, y, eye.z)
var/list/remove = eye.visibleChunks - visibleChunks
var/list/add = visibleChunks - eye.visibleChunks
for(var/chunk in remove)
var/datum/chunk/c = chunk
c.remove(eye)
for(var/chunk in add)
var/datum/chunk/c = chunk
c.add(eye)
// Updates the chunks that the turf is located in. Use this when obstacles are destroyed or when doors open.
/datum/visualnet/proc/updateVisibility(atom/A, var/opacity_check = 1)
if(!ticker || (opacity_check && !A.opacity))
return
majorChunkChange(A, 2)
/datum/visualnet/proc/updateChunk(x, y, z)
// 0xf = 15
if(!chunkGenerated(x, y, z))
return
var/datum/chunk/chunk = getChunk(x, y, z)
chunk.hasChanged()
// Never access this proc directly!!!!
// This will update the chunk and all the surrounding chunks.
// It will also add the atom to the cameras list if you set the choice to 1.
// Setting the choice to 0 will remove the camera from the chunks.
// If you want to update the chunks around an object, without adding/removing a camera, use choice 2.
/datum/visualnet/proc/majorChunkChange(atom/c, var/choice)
// 0xf = 15
if(!c)
return
var/turf/T = get_turf(c)
if(T)
var/x1 = max(0, T.x - 8) & ~0xf
var/y1 = max(0, T.y - 8) & ~0xf
var/x2 = min(world.maxx, T.x + 8) & ~0xf
var/y2 = min(world.maxy, T.y + 8) & ~0xf
//world << "X1: [x1] - Y1: [y1] - X2: [x2] - Y2: [y2]"
for(var/x = x1; x <= x2; x += 16)
for(var/y = y1; y <= y2; y += 16)
if(chunkGenerated(x, y, T.z))
var/datum/chunk/chunk = getChunk(x, y, T.z)
onMajorChunkChange(c, choice, chunk)
chunk.hasChanged()
/datum/visualnet/proc/onMajorChunkChange(atom/c, var/choice, var/datum/chunk/chunk)
// Will check if a mob is on a viewable turf. Returns 1 if it is, otherwise returns 0.
/datum/visualnet/proc/checkVis(mob/living/target as mob)
// 0xf = 15
var/turf/position = get_turf(target)
return checkTurfVis(position)
/datum/visualnet/proc/checkTurfVis(var/turf/position)
var/datum/chunk/chunk = getChunk(position.x, position.y, position.z)
if(chunk)
if(chunk.changed)
chunk.hasChanged(1) // Update now, no matter if it's visible or not.
if(chunk.visibleTurfs[position])
return 1
return 0
// Debug verb for VVing the chunk that the turf is in.
/*
/turf/verb/view_chunk()
set src in world
if(cameranet.chunkGenerated(x, y, z))
var/datum/chunk/chunk = cameranet.getCameraChunk(x, y, z)
usr.client.debug_variables(chunk)
*/