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vcmi/lib/mapping/CMapEditManager.h
2013-04-22 15:08:04 +00:00

273 lines
8.3 KiB
C++

/*
* CMapEditManager.h, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#pragma once
#include "../CRandomGenerator.h"
#include "CMap.h"
class CGObjectInstance;
class CTerrainViewPatternConfig;
struct TerrainViewPattern;
/// Represents a map rectangle.
struct DLL_LINKAGE MapRect
{
MapRect();
MapRect(int3 pos, si32 width, si32 height);
si32 x, y, z;
si32 width, height;
si32 left() const;
si32 right() const;
si32 top() const;
si32 bottom() const;
int3 topLeft() const; /// Top left corner of this rect.
int3 topRight() const; /// Top right corner of this rect.
int3 bottomLeft() const; /// Bottom left corner of this rect.
int3 bottomRight() const; /// Bottom right corner of this rect.
/// Returns a MapRect of the intersection of this rectangle and the given one.
MapRect operator&(const MapRect & rect) const;
};
/// The abstract base class CMapOperation defines an operation that can be executed, undone and redone.
class DLL_LINKAGE CMapOperation : public boost::noncopyable
{
public:
CMapOperation(CMap * map);
virtual ~CMapOperation() { };
virtual void execute() = 0;
virtual void undo() = 0;
virtual void redo() = 0;
virtual std::string getLabel() const; /// Returns a display-able name of the operation.
protected:
CMap * map;
};
/// The CMapUndoManager provides the functionality to save operations and undo/redo them.
class DLL_LINKAGE CMapUndoManager : boost::noncopyable
{
public:
CMapUndoManager();
void undo();
void redo();
void clearAll();
/// The undo redo limit is a number which says how many undo/redo items can be saved. The default
/// value is 10. If the value is 0, no undo/redo history will be maintained.
int getUndoRedoLimit() const;
void setUndoRedoLimit(int value);
const CMapOperation * peekRedo() const;
const CMapOperation * peekUndo() const;
void addOperation(unique_ptr<CMapOperation> && operation); /// Client code does not need to call this method.
private:
typedef std::list<unique_ptr<CMapOperation> > TStack;
void doOperation(TStack & fromStack, TStack & toStack, bool doUndo);
const CMapOperation * peek(const TStack & stack) const;
TStack undoStack;
TStack redoStack;
int undoRedoLimit;
};
/// The map edit manager provides functionality for drawing terrain and placing
/// objects on the map.
class DLL_LINKAGE CMapEditManager : boost::noncopyable
{
public:
CMapEditManager(CMap * map);
/// Clears the terrain. The free level is filled with water and the underground level with rock.
void clearTerrain(CRandomGenerator * gen);
void drawTerrain(const MapRect & rect, ETerrainType terType, CRandomGenerator * gen);
void insertObject(const int3 & pos, CGObjectInstance * obj);
CMapUndoManager & getUndoManager();
void undo();
void redo();
private:
void execute(unique_ptr<CMapOperation> && operation);
CMap * map;
CMapUndoManager undoManager;
};
/* ---------------------------------------------------------------------------- */
/* Implementation/Detail classes, Private API */
/* ---------------------------------------------------------------------------- */
namespace ETerrainGroup
{
enum ETerrainGroup
{
NORMAL,
DIRT,
SAND,
WATER,
ROCK
};
}
/// The terrain view pattern describes a specific composition of terrain tiles
/// in a 3x3 matrix and notes which terrain view frame numbers can be used.
struct DLL_LINKAGE TerrainViewPattern
{
struct WeightedRule
{
WeightedRule();
/// Gets true if this rule is a standard rule which means that it has a value of one of the RULE_* constants.
bool isStandardRule() const;
/// The name of the rule. Can be any value of the RULE_* constants or a ID of a another pattern.
std::string name;
/// Optional. A rule can have points. Patterns may have a minimum count of points to reach to be successful.
int points;
};
/// Constant for the flip mode same image. Pattern will be flipped and the same image will be used(which is given in the mapping).
static const std::string FLIP_MODE_SAME_IMAGE;
/// Constant for the flip mode different images. Pattern will be flipped and different images will be used(mapping area is divided into 4 parts)
static const std::string FLIP_MODE_DIFF_IMAGES;
/// Constant for the rule dirt, meaning a dirty border is required.
static const std::string RULE_DIRT;
/// Constant for the rule sand, meaning a sandy border is required.
static const std::string RULE_SAND;
/// Constant for the rule transition, meaning a dirty OR sandy border is required.
static const std::string RULE_TRANSITION;
/// Constant for the rule native, meaning a native type is required.
static const std::string RULE_NATIVE;
/// Constant for the rule any, meaning a native type, dirty OR sandy border is required.
static const std::string RULE_ANY;
TerrainViewPattern();
/// The pattern data can be visualized as a 3x3 matrix:
/// [ ][ ][ ]
/// [ ][ ][ ]
/// [ ][ ][ ]
///
/// The box in the center belongs always to the native terrain type and
/// is the point of origin. Depending on the terrain type different rules
/// can be used. Their meaning differs also from type to type.
///
/// std::vector -> several rules can be used in one cell
std::array<std::vector<WeightedRule>, 9> data;
/// The identifier of the pattern, if it's referenced from a another pattern.
std::string id;
/// This describes the mapping between this pattern and the corresponding range of frames
/// which should be used for the ter view.
///
/// std::vector -> size=1: typical, size=2: if this pattern should map to two different types of borders
/// std::pair -> 1st value: lower range, 2nd value: upper range
std::vector<std::pair<int, int> > mapping;
/// The minimum points to reach to to validate the pattern successfully.
int minPoints;
/// Describes if flipping is required and which mapping should be used.
std::string flipMode;
ETerrainGroup::ETerrainGroup terGroup;
};
/// The terrain view pattern config loads pattern data from the filesystem.
class DLL_LINKAGE CTerrainViewPatternConfig : public boost::noncopyable
{
public:
static CTerrainViewPatternConfig & get();
const std::vector<TerrainViewPattern> & getPatternsForGroup(ETerrainGroup::ETerrainGroup terGroup) const;
const TerrainViewPattern & getPatternById(ETerrainGroup::ETerrainGroup terGroup, const std::string & id) const;
ETerrainGroup::ETerrainGroup getTerrainGroup(const std::string & terGroup) const;
private:
CTerrainViewPatternConfig();
~CTerrainViewPatternConfig();
std::map<ETerrainGroup::ETerrainGroup, std::vector<TerrainViewPattern> > patterns;
static boost::mutex smx;
};
/// The CDrawTerrainOperation class draws a terrain area on the map.
class CDrawTerrainOperation : public CMapOperation
{
public:
CDrawTerrainOperation(CMap * map, const MapRect & rect, ETerrainType terType, CRandomGenerator * gen);
void execute() override;
void undo() override;
void redo() override;
std::string getLabel() const override;
private:
struct ValidationResult
{
ValidationResult(bool result, const std::string & transitionReplacement = "");
bool result;
/// The replacement of a T rule, either D or S.
std::string transitionReplacement;
};
void updateTerrainViews(const MapRect & rect);
ETerrainGroup::ETerrainGroup getTerrainGroup(ETerrainType terType) const;
/// Validates the terrain view of the given position and with the given pattern.
ValidationResult validateTerrainView(const int3 & pos, const TerrainViewPattern & pattern, int recDepth = 0) const;
/// Tests whether the given terrain type is a sand type. Sand types are: Water, Sand and Rock
bool isSandType(ETerrainType terType) const;
TerrainViewPattern getFlippedPattern(const TerrainViewPattern & pattern, int flip) const;
static const int FLIP_PATTERN_HORIZONTAL = 1;
static const int FLIP_PATTERN_VERTICAL = 2;
static const int FLIP_PATTERN_BOTH = 3;
MapRect rect;
ETerrainType terType;
CRandomGenerator * gen;
};
/// The CInsertObjectOperation class inserts an object to the map.
class CInsertObjectOperation : public CMapOperation
{
public:
CInsertObjectOperation(CMap * map, const int3 & pos, CGObjectInstance * obj);
void execute() override;
void undo() override;
void redo() override;
std::string getLabel() const override;
private:
int3 pos;
CGObjectInstance * obj;
};