Merge pull request #13851 from Fox-McCloud/cleanup-datastructures

Cleans up Datastructures
This commit is contained in:
AffectedArc07
2020-08-09 18:23:43 +01:00
committed by GitHub
5 changed files with 24 additions and 81 deletions
-56
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@@ -1,56 +0,0 @@
/datum/stack
var/list/stack = list()
var/max_elements = 0
/datum/stack/New(list/elements,max)
..()
if(elements)
stack = elements.Copy()
if(max)
max_elements = max
/datum/stack/proc/Pop()
if(is_empty())
return null
. = stack[stack.len]
stack.Cut(stack.len,0)
/datum/stack/proc/Push(element)
if(max_elements && (stack.len+1 > max_elements))
return null
stack += element
/datum/stack/proc/Top()
if(is_empty())
return null
. = stack[stack.len]
/datum/stack/proc/is_empty()
. = stack.len ? 0 : 1
//Rotate entire stack left with the leftmost looping around to the right
/datum/stack/proc/RotateLeft()
if(is_empty())
return 0
. = stack[1]
stack.Cut(1,2)
Push(.)
//Rotate entire stack to the right with the rightmost looping around to the left
/datum/stack/proc/RotateRight()
if(is_empty())
return 0
. = stack[stack.len]
stack.Cut(stack.len,0)
stack.Insert(1,.)
/datum/stack/proc/Copy()
var/datum/stack/S=new()
S.stack = stack.Copy()
S.max_elements = max_elements
return S
/datum/stack/proc/Clear()
stack.Cut()
@@ -1,28 +1,28 @@
//////////////////////
//Heap object
//datum/heap object
//////////////////////
/Heap
/datum/heap
var/list/L
var/cmp
/Heap/New(compare)
/datum/heap/New(compare)
L = new()
cmp = compare
/Heap/proc/IsEmpty()
/datum/heap/proc/IsEmpty()
return !L.len
//Insert and place at its position a new node in the heap
/Heap/proc/Insert(atom/A)
/datum/heap/proc/Insert(atom/A)
L.Add(A)
Swim(L.len)
//removes and returns the first element of the heap
//(i.e the max or the min dependant on the comparison function)
/Heap/proc/Pop()
/datum/heap/proc/Pop()
if(!L.len)
return 0
. = L[1]
@@ -33,7 +33,7 @@
Sink(1)
//Get a node up to its right position in the heap
/Heap/proc/Swim(var/index)
/datum/heap/proc/Swim(var/index)
var/parent = round(index * 0.5)
while(parent > 0 && (call(cmp)(L[index],L[parent]) > 0))
@@ -42,7 +42,7 @@
parent = round(index * 0.5)
//Get a node down to its right position in the heap
/Heap/proc/Sink(var/index)
/datum/heap/proc/Sink(var/index)
var/g_child = GetGreaterChild(index)
while(g_child > 0 && (call(cmp)(L[index],L[g_child]) < 0))
@@ -52,7 +52,7 @@
//Returns the greater (relative to the comparison proc) of a node children
//or 0 if there's no child
/Heap/proc/GetGreaterChild(var/index)
/datum/heap/proc/GetGreaterChild(var/index)
if(index * 2 > L.len)
return 0
@@ -65,11 +65,11 @@
return index * 2
//Replaces a given node so it verify the heap condition
/Heap/proc/ReSort(atom/A)
/datum/heap/proc/ReSort(atom/A)
var/index = L.Find(A)
Swim(index)
Sink(index)
/Heap/proc/List()
/datum/heap/proc/List()
. = L.Copy()
+11 -11
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@@ -29,15 +29,15 @@ Actual Adjacent procs :
//////////////////////
//A* nodes variables
/PathNode
/datum/pathnode
var/turf/source //turf associated with the PathNode
var/PathNode/prevNode //link to the parent PathNode
var/datum/pathnode/prevNode //link to the parent PathNode
var/f //A* Node weight (f = g + h)
var/g //A* movement cost variable
var/h //A* heuristic variable
var/nt //count the number of Nodes traversed
/PathNode/New(s,p,pg,ph,pnt)
/datum/pathnode/New(s,p,pg,ph,pnt)
source = s
prevNode = p
g = pg
@@ -46,7 +46,7 @@ Actual Adjacent procs :
source.PNode = src
nt = pnt
/PathNode/proc/calc_f()
/datum/pathnode/proc/calc_f()
f = g + h
//////////////////////
@@ -54,11 +54,11 @@ Actual Adjacent procs :
//////////////////////
//the weighting function, used in the A* algorithm
/proc/PathWeightCompare(PathNode/a, PathNode/b)
/proc/PathWeightCompare(datum/pathnode/a, datum/pathnode/b)
return a.f - b.f
//reversed so that the Heap is a MinHeap rather than a MaxHeap
/proc/HeapPathWeightCompare(PathNode/a, PathNode/b)
/proc/HeapPathWeightCompare(datum/pathnode/a, datum/pathnode/b)
return b.f - a.f
//wrapper that returns an empty list if A* failed to find a path
@@ -82,13 +82,13 @@ Actual Adjacent procs :
return 0
maxnodedepth = maxnodes //no need to consider path longer than maxnodes
var/Heap/open = new /Heap(/proc/HeapPathWeightCompare) //the open list
var/datum/heap/open = new /datum/heap(/proc/HeapPathWeightCompare) //the open list
var/list/closed = new() //the closed list
var/list/path = null //the returned path, if any
var/PathNode/cur //current processed turf
var/datum/pathnode/cur //current processed turf
//initialization
open.Insert(new /PathNode(start,null,0,call(start,dist)(end),0))
open.Insert(new /datum/pathnode(start,null,0,call(start,dist)(end),0))
//then run the main loop
while(!open.IsEmpty() && !path)
@@ -125,7 +125,7 @@ Actual Adjacent procs :
var/newg = cur.g + call(cur.source,dist)(T)
if(!T.PNode) //is not already in open list, so add it
open.Insert(new /PathNode(T,cur,newg,call(T,dist)(end),cur.nt+1))
open.Insert(new /datum/pathnode(T,cur,newg,call(T,dist)(end),cur.nt+1))
else //is already in open list, check if it's a better way from the current turf
if(newg < T.PNode.g)
T.PNode.prevNode = cur
@@ -137,7 +137,7 @@ Actual Adjacent procs :
}
//cleaning after us
for(var/PathNode/PN in open.L)
for(var/datum/pathnode/PN in open.L)
PN.source.PNode = null
for(var/turf/T in closed)
T.PNode = null
+1 -1
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@@ -25,7 +25,7 @@
var/blocks_air = 0
var/PathNode/PNode = null //associated PathNode in the A* algorithm
var/datum/pathnode/PNode = null //associated PathNode in the A* algorithm
flags = 0
+1 -2
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@@ -87,6 +87,7 @@
#include "code\__HELPERS\files.dm"
#include "code\__HELPERS\game.dm"
#include "code\__HELPERS\global_lists.dm"
#include "code\__HELPERS\heap.dm"
#include "code\__HELPERS\icon_smoothing.dm"
#include "code\__HELPERS\icons.dm"
#include "code\__HELPERS\lists.dm"
@@ -108,8 +109,6 @@
#include "code\__HELPERS\sorts\InsertSort.dm"
#include "code\__HELPERS\sorts\MergeSort.dm"
#include "code\__HELPERS\sorts\TimSort.dm"
#include "code\_DATASTRUCTURES\heap.dm"
#include "code\_DATASTRUCTURES\stacks.dm"
#include "code\_globalvars\configuration.dm"
#include "code\_globalvars\game_modes.dm"
#include "code\_globalvars\genetics.dm"