Update jobs when committing MapCache changes

The map_block->designation.{dig,smooth} are reset to zeros when a job
posting is created for the designation. The job is then used to override
the designation state in the map_block. To make the new designation set
propogate to jobs the job structure would require updating. The update
would be possible a complex operation. The simple alternative is to
remove the job and let df create a new job in the next tick.

Fixes #1229

library/include/modules/MapCache.h

@@ -38,6 +38,8 @@ distribution.
 #include "df/item.h"
 #include "df/inclusion_type.h"
 
+#include <bitset>
+
 namespace df {
     struct world_region_details;
 }
@@ -265,14 +267,17 @@ public:
     {
         return index_tile(designation,p);
     }
-    bool setDesignationAt(df::coord2d p, df::tile_designation des)
+    bool setDesignationAt(df::coord2d p, df::tile_designation des, int32_t priority = 4000)
     {
         if(!valid) return false;
         dirty_designations = true;
+        designated_tiles[(p.x&15) + (p.y&15)*16] = true;
         //printf("setting block %d/%d/%d , %d %d\n",x,y,z, p.x, p.y);
         index_tile(designation,p) = des;
-        if(des.bits.dig && block)
+        if((des.bits.dig || des.bits.smooth) && block) {
             block->flags.bits.designated = true;
+            setPriorityAt(p, priority);
+        }
         return true;
     }
 
@@ -342,13 +347,15 @@ private:
 
     void init();
 
-    bool valid;
+    bool valid:1;
     bool dirty_designations:1;
     bool dirty_tiles:1;
     bool dirty_veins:1;
     bool dirty_temperatures:1;
     bool dirty_occupancies:1;
 
+    std::bitset<16*16> designated_tiles;
+
     DFCoord bcoord;
 
     // Custom tags for floodfill
@@ -548,13 +555,11 @@ class DFHACK_EXPORT MapCache
         return b ? b->DesignationAt(tilecoord) : df::tile_designation();
     }
     // priority is optional, only set if >= 0
-    bool setDesignationAt (DFCoord tilecoord, df::tile_designation des, int32_t priority = -1)
+    bool setDesignationAt (DFCoord tilecoord, df::tile_designation des, int32_t priority = 4000)
     {
         if (Block *b = BlockAtTile(tilecoord))
         {
-            if (!b->setDesignationAt(tilecoord, des))
-                return false;
-            if (priority >= 0 && b->setPriorityAt(tilecoord, priority))
+            if (!b->setDesignationAt(tilecoord, des, priority))
                 return false;
             return true;
         }
@@ -599,15 +604,8 @@ class DFHACK_EXPORT MapCache
         return b ? b->removeItemOnGround(item) : false;
     }
 
-    bool WriteAll()
-    {
-        std::map<DFCoord, Block *>::iterator p;
-        for(p = blocks.begin(); p != blocks.end(); p++)
-        {
-            p->second->Write();
-        }
-        return true;
-    }
+    bool WriteAll();
+
     void trash()
     {
         std::map<DFCoord, Block *>::iterator p;

library/modules/MapCache.cpp

@@ -45,6 +45,7 @@ using namespace std;
 #include "modules/Buildings.h"
 #include "modules/MapCache.h"
 #include "modules/Maps.h"
+#include "modules/Job.h"
 #include "modules/Materials.h"
 
 #include "df/block_burrow.h"
@@ -57,6 +58,7 @@ using namespace std;
 #include "df/burrow.h"
 #include "df/feature_init.h"
 #include "df/flow_info.h"
+#include "df/job.h"
 #include "df/plant.h"
 #include "df/plant_tree_info.h"
 #include "df/plant_tree_tile.h"
@@ -91,7 +93,9 @@ const BiomeInfo MapCache::biome_stub = {
 
 #define COPY(a,b) memcpy(&a,&b,sizeof(a))
 
-MapExtras::Block::Block(MapCache *parent, DFCoord _bcoord) : parent(parent)
+MapExtras::Block::Block(MapCache *parent, DFCoord _bcoord) :
+    parent(parent),
+    designated_tiles{}
 {
     dirty_designations = false;
     dirty_tiles = false;
@@ -1250,6 +1254,35 @@ MapExtras::MapCache::MapCache()
     }
 }
 
+bool MapExtras::MapCache::WriteAll()
+{
+    auto world = df::global::world;
+    df::job_list_link* job_link = world->jobs.list.next;
+    df::job_list_link* next = nullptr;
+    for (;job_link;job_link = next) {
+        next = job_link->next;
+        df::job* job = job_link->item;
+        df::coord pos = job->pos;
+        df::coord blockpos(pos.x>>4,pos.y>>4,pos.z);
+        auto iter = blocks.find(blockpos);
+        if (iter == blocks.end())
+            continue;
+        df::coord2d bpos(pos.x - (blockpos.x<<4),pos.y - (blockpos.y<<4));
+        auto block = iter->second;
+        if (!block->designated_tiles.test(bpos.x+bpos.y*16))
+            continue;
+        // Remove designation job. DF will create a new one in the next tick
+        // processing.
+        Job::removeJob(job);
+    }
+    std::map<DFCoord, Block *>::iterator p;
+    for(p = blocks.begin(); p != blocks.end(); p++)
+    {
+        p->second->Write();
+    }
+    return true;
+}
+
 MapExtras::Block *MapExtras::MapCache::BlockAt(DFCoord blockcoord)
 {
     if(!valid)