73 lines
2.4 KiB
C++
73 lines
2.4 KiB
C++
// LOSManager.h
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//
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// Matei Zaharia matei@sprint.ca / matei@wildfiregames.com
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//
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// Maintains and updates line of sight data (including Shroud of Darkness
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// and Fog of War).
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//
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// Usage:
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// - Initialize() is called when the game is started to allocate the visibility arrays
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// - Update() is called each frame by CSimulation::Update() to update the visibility arrays
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// - m_MapRevealed can be set to true to reveal the entire map (remove both LOS and FOW)
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// - GetStatus can be used to obtain the LOS status of a tile or a world-space point
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// - GetUnitStatus returns the LOS status of an entity or actor
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#ifndef LOS_MANAGER_INCLUDED
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#define LOS_MANAGER_INCLUDED
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#include "Singleton.h"
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#include "Game.h"
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#include "World.h"
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#include "Player.h"
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class CUnit;
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class CPlayer;
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enum ELOSStatus
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{
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LOS_VISIBLE = 2, // tile is currently in LOS of one of the player's units
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LOS_EXPLORED = 1, // tile was explored before but is now in Fog of War
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LOS_UNEXPLORED = 0 // tile is unexplored and therefore in Shroud of Darkness
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};
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enum EUnitLOSStatus
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{
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UNIT_VISIBLE = 2, // unit is in LOS of one of the player's units
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UNIT_REMEMBERED = 1, // unit was seen before and is permanent but is no longer in LOS
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UNIT_HIDDEN = 0 // unit is either not permanent or was never seen before
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};
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class CLOSManager : public Singleton<CLOSManager>
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{
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int** m_Explored; // (m_Explored[x][z] & (1<<p) says whether player p has explored tile (x,z),
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// i.e. has removed Shroud of Darkness from it.
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int** m_Visible; // (m_Visible[x][z] & (1<<p)) says whether player p currently sees tile (x,z).
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// NOTE: This will have to be changed to a 3D array where each element stores the number of units
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// of a certain player that can see a certain tile if we want to use incremental LOS.
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public:
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static const int NORMAL = 0;
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static const int EXPLORED = 1;
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static const int ALL_VISIBLE = 2;
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int m_LOSSetting;
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CLOSManager();
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~CLOSManager();
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void Initialize(uint losSetting); // 0 = normal, 1 = explored, 2 = all visible
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void Update();
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// Get LOS status for a tile (in tile coordinates)
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ELOSStatus GetStatus(int tx, int tz, CPlayer* player);
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// Get LOS status for a point (in game coordinates)
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ELOSStatus GetStatus(float fx, float fz, CPlayer* player);
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// Returns whether a given entity is visible to the given player
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EUnitLOSStatus GetUnitStatus(CUnit* unit, CPlayer* player);
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};
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#endif
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