From 0572e87d7b14c0be2982ce39bbde6b93f237390d Mon Sep 17 00:00:00 2001
From: expwnent <scott@octopusofdoom.doom>
Date: Mon, 31 Dec 2012 13:50:44 -0500
Subject: [PATCH] SkyEternal: allocates new z-levels of sky as needed, or on
 request.

---
 plugins/CMakeLists.txt |   1 +
 plugins/skyEternal.cpp | 152 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 153 insertions(+)
 create mode 100644 plugins/skyEternal.cpp

diff --git a/plugins/CMakeLists.txt b/plugins/CMakeLists.txt
index 91d578215..aa4f95056 100644
--- a/plugins/CMakeLists.txt
+++ b/plugins/CMakeLists.txt
@@ -127,6 +127,7 @@ if (BUILD_SUPPORTED)
     # not yet. busy with other crud again...
     #DFHACK_PLUGIN(versionosd versionosd.cpp)
     DFHACK_PLUGIN(misery misery.cpp)
+    DFHACK_PLUGIN(skyEternal skyEternal.cpp)
 endif()
 
 
diff --git a/plugins/skyEternal.cpp b/plugins/skyEternal.cpp
new file mode 100644
index 000000000..04a176a8d
--- /dev/null
+++ b/plugins/skyEternal.cpp
@@ -0,0 +1,152 @@
+
+#include "Core.h"
+#include "Console.h"
+#include "DataDefs.h"
+#include "Export.h"
+#include "PluginManager.h"
+
+#include "modules/World.h"
+
+#include "df/construction.h"
+#include "df/game_mode.h"
+#include "df/map_block.h"
+#include "df/world.h"
+#include "df/z_level_flags.h"
+
+#include <cstring>
+#include <string>
+#include <vector>
+
+using namespace std;
+
+using namespace DFHack;
+using namespace df::enums;
+
+command_result skyEternal (color_ostream &out, std::vector <std::string> & parameters);
+
+DFHACK_PLUGIN("skyEternal");
+
+DFhackCExport command_result plugin_init ( color_ostream &out, std::vector <PluginCommand> &commands)
+{
+    commands.push_back(PluginCommand(
+        "skyEternal", 
+        "Creates new sky levels on request, or as you construct up.",
+        skyEternal, false, 
+        "Usage:\n"
+        "  skyEternal\n"
+        "    creates one more z-level\n"
+        "  skyEternal [n]\n"
+        "    creates n more z-level(s)\n"
+        "  skyEternal enable\n"
+        "    enables monitoring of constructions\n"
+        "  skyEternal disable\n"
+        "    disable monitoring of constructions\n"
+        "\n"
+        "If construction monitoring is enabled, then the plugin will automatically create new sky z-levels as you construct upward.\n"
+    ));
+    return CR_OK;
+}
+
+DFhackCExport command_result plugin_shutdown ( color_ostream &out )
+{
+    return CR_OK;
+}
+
+/*
+DFhackCExport command_result plugin_onstatechange(color_ostream &out, state_change_event event)
+{
+    switch (event) {
+    case SC_GAME_LOADED:
+        // initialize from the world just loaded
+        break;
+    case SC_GAME_UNLOADED:
+        // cleanup
+        break;
+    default:
+        break;
+    }
+    return CR_OK;
+}
+*/
+
+static size_t constructionSize = 0;
+static bool enabled = false;
+
+DFhackCExport command_result plugin_onupdate ( color_ostream &out )
+{
+    if ( !enabled )
+        return CR_OK;
+    if ( !Core::getInstance().isMapLoaded() )
+        return CR_OK;
+    {
+        t_gamemodes mode;
+        if ( !Core::getInstance().getWorld()->ReadGameMode(mode) )
+            return CR_FAILURE;
+        if ( mode.g_mode != df::enums::game_mode::DWARF )
+            return CR_OK;
+    }
+    
+    if ( df::global::world->constructions.size() == constructionSize )
+        return CR_OK;
+    int32_t zNow = df::global::world->map.z_count_block;
+    vector<string> vec;
+    for ( size_t a = constructionSize; a < df::global::world->constructions.size(); a++ ) {
+        df::construction* construct = df::global::world->constructions[a];
+        if ( construct->pos.z+2 < zNow )
+            continue;
+        skyEternal(out, vec);
+        zNow = df::global::world->map.z_count_block;
+        ///break;
+    }
+    constructionSize = df::global::world->constructions.size();
+    
+    return CR_OK;
+}
+
+command_result skyEternal (color_ostream &out, std::vector <std::string> & parameters)
+{
+    if ( parameters.size() > 1 )
+        return CR_WRONG_USAGE;
+    if ( parameters.size() == 0 ) {
+        vector<string> vec;
+        vec.push_back("1");
+        return skyEternal(out, vec);
+    }
+    if (parameters[0] == "enable") {
+        enabled = true;
+        return CR_OK;
+    }
+    if (parameters[0] == "disable") {
+        enabled = false;
+        constructionSize = 0;
+        return CR_OK;
+    }
+    int32_t howMany = 0;
+    howMany = atoi(parameters[0].c_str());
+    df::world* world = df::global::world;
+    CoreSuspender suspend;
+    int32_t x_count_block = world->map.x_count_block;
+    int32_t y_count_block = world->map.y_count_block;
+    for ( int32_t count = 0; count < howMany; count++ ) {
+        //change the size of the pointer stuff
+        int32_t z_count_block = world->map.z_count_block;
+        df::map_block**** block_index = world->map.block_index;
+        for ( int32_t a = 0; a < x_count_block; a++ ) {
+            for ( int32_t b = 0; b < y_count_block; b++ ) {
+                df::map_block** column = new df::map_block*[z_count_block+1];
+                memcpy(column, block_index[a][b], z_count_block*sizeof(df::map_block*));
+                column[z_count_block] = NULL;
+                delete[] block_index[a][b];
+                block_index[a][b] = column;
+            }
+        }
+        df::z_level_flags* flags = new df::z_level_flags[z_count_block+1];
+        memcpy(flags, world->map.z_level_flags, z_count_block*sizeof(df::z_level_flags));
+        flags[z_count_block].whole = 0;
+        flags[z_count_block].bits.update = 1;
+        world->map.z_count_block++;
+        world->map.z_count++;
+    }
+    
+    return CR_OK;
+}