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- /*
- * BattleFieldController.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 "../../lib/battle/BattleHexArray.h"
- #include "../../lib/Point.h"
- #include "../gui/CIntObject.h"
- VCMI_LIB_NAMESPACE_BEGIN
- class CStack;
- class Rect;
- VCMI_LIB_NAMESPACE_END
- class BattleHero;
- class CAnimation;
- class Canvas;
- class IImage;
- class BattleInterface;
- /// Handles battlefield grid as well as rendering of background layer of battle interface
- class BattleFieldController : public CIntObject
- {
- BattleInterface & owner;
- std::shared_ptr<IImage> background;
- std::shared_ptr<IImage> cellBorder;
- std::shared_ptr<IImage> cellUnitMovementHighlight;
- std::shared_ptr<IImage> cellUnitMaxMovementHighlight;
- std::shared_ptr<IImage> cellShade;
- std::shared_ptr<CAnimation> rangedFullDamageLimitImages;
- std::shared_ptr<CAnimation> shootingRangeLimitImages;
- std::shared_ptr<CAnimation> attackCursors;
- std::shared_ptr<CAnimation> spellCursors;
- /// Canvas that contains background, hex grid (if enabled), absolute obstacles and movement range of active stack
- std::unique_ptr<Canvas> backgroundWithHexes;
- /// direction which will be used to perform attack with current cursor position
- Point currentAttackOriginPoint;
- /// hex currently under mouse hover
- BattleHex hoveredHex;
- /// hexes to which currently active stack can move
- BattleHexArray occupiableHexes;
- /// hexes that when in front of a unit cause it's amount box to move back
- std::array<bool, GameConstants::BFIELD_SIZE> stackCountOutsideHexes;
- void showHighlightedHex(Canvas & to, std::shared_ptr<IImage> highlight, const BattleHex & hex, bool darkBorder);
- BattleHexArray getHighlightedHexesForActiveStack();
- BattleHexArray getMovementRangeForHoveredStack();
- BattleHexArray getHighlightedHexesForSpellRange();
- BattleHexArray getHighlightedHexesForMovementTarget();
- // Range limit highlight helpers
- /// get all hexes within a certain distance of given hex
- BattleHexArray getRangeHexes(const BattleHex & sourceHex, uint8_t distance) const;
- /// get only hexes at the limit of a range
- BattleHexArray getRangeLimitHexes(const BattleHex & hoveredHex, const BattleHexArray & hexRange, uint8_t distanceToLimit) const;
- /// calculate if a hex is in range limit and return its index in range
- bool isHexInRangeLimit(const BattleHex & hex, const BattleHexArray & rangeLimitHexes, int * hexIndexInRangeLimit) const;
- /// get an array that has for each hex in range, an array with all directions where an outside neighbour hex exists
- std::vector<std::vector<BattleHex::EDir>> getOutsideNeighbourDirectionsForLimitHexes(const BattleHexArray & rangeHexes, const BattleHexArray & rangeLimitHexes) const;
- /// calculates what image to use as range limit, depending on the direction of neighbours
- /// a mask is used internally to mark the directions of all neighbours
- /// based on this mask the corresponding image is selected
- std::vector<std::shared_ptr<IImage>> calculateRangeLimitHighlightImages(std::vector<std::vector<BattleHex::EDir>> hexesNeighbourDirections, std::shared_ptr<CAnimation> limitImages);
- /// calculates all hexes for a range limit and what images to be shown as highlight for each of the hexes
- void calculateRangeLimitAndHighlightImages(uint8_t distance, std::shared_ptr<CAnimation> rangeLimitImages, BattleHexArray & rangeLimitHexes, std::vector<std::shared_ptr<IImage>> & rangeLimitHexesHighlights);
- void showBackground(Canvas & canvas);
- void showBackgroundImage(Canvas & canvas);
- void showBackgroundImageWithHexes(Canvas & canvas);
- void showHighlightedHexes(Canvas & canvas);
- void updateAccessibleHexes();
- BattleHex getHexAtPosition(Point hoverPosition);
- /// Checks whether selected pixel is transparent, uses local coordinates of a hex
- bool isPixelInHex(Point const & position);
- size_t selectBattleCursor(const BattleHex & myNumber);
- void gesture(bool on, const Point & initialPosition, const Point & finalPosition) override;
- void gesturePanning(const Point & initialPosition, const Point & currentPosition, const Point & lastUpdateDistance) override;
- void mouseMoved(const Point & cursorPosition, const Point & lastUpdateDistance) override;
- void clickPressed(const Point & cursorPosition) override;
- void showPopupWindow(const Point & cursorPosition) override;
- void activate() override;
- void showAll(Canvas & to) override;
- void show(Canvas & to) override;
- void tick(uint32_t msPassed) override;
- bool receiveEvent(const Point & position, int eventType) const override;
- public:
- BattleFieldController(BattleInterface & owner);
- void createHeroes();
- void redrawBackgroundWithHexes();
- void renderBattlefield(Canvas & canvas);
- /// Returns position of hex relative to owner (BattleInterface)
- Rect hexPositionLocal(const BattleHex & hex) const;
- /// Returns position of hex relative to game window
- Rect hexPositionAbsolute(const BattleHex & hex) const;
- /// Returns ID of currently hovered hex or BattleHex::INVALID if none
- BattleHex getHoveredHex();
- /// Returns the currently hovered stack
- const CStack* getHoveredStack();
- /// returns true if selected tile can be attacked in melee by current stack
- bool isTileAttackable(const BattleHex & number) const;
- /// returns true if stack should render its stack count image in default position - outside own hex
- bool stackCountOutsideHex(const BattleHex & number) const;
- BattleHex::EDir selectAttackDirection(const BattleHex & myNumber) const;
- BattleHex fromWhichHexAttack(const BattleHex & myNumber);
- };
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