#include "config/C4Constants.h"

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Classes
class	C4Landscape

Enumerations
enum class	LandscapeMode { Undefined = 0 , Dynamic = 1 , Static = 2 , Exact = 3 }

Functions
bool	AboveSolid (int32_t &rx, int32_t &ry)

bool	AboveSemiSolid (int32_t &rx, int32_t &ry)

bool	SemiAboveSolid (int32_t &rx, int32_t &ry)

bool	FindSolidGround (int32_t &rx, int32_t &ry, int32_t width)

bool	FindLiquid (int32_t &rx, int32_t &ry, int32_t width, int32_t height)

bool	FindTunnel (int32_t &rx, int32_t &ry, int32_t width, int32_t height)

bool	FindSurfaceLiquid (int32_t &rx, int32_t &ry, int32_t width, int32_t height)

bool	FindLevelGround (int32_t &rx, int32_t &ry, int32_t width, int32_t hrange)

bool	FindConSiteSpot (int32_t &rx, int32_t &ry, int32_t wdt, int32_t hgt, int32_t hrange=-1)

bool	FindThrowingPosition (int32_t iTx, int32_t iTy, C4Real fXDir, C4Real fYDir, int32_t iHeight, int32_t &rX, int32_t &rY)

bool	PathFree (int32_t x1, int32_t y1, int32_t x2, int32_t y2)

bool	PathFree (int32_t x1, int32_t y1, int32_t x2, int32_t y2, int32_t ix, int32_t iy)

bool	PathFreeIgnoreVehicle (int32_t x1, int32_t y1, int32_t x2, int32_t y2, int32_t ix=nullptr, int32_t iy=nullptr)

bool	FindClosestFree (int32_t &rX, int32_t &rY, int32_t iAngle1, int32_t iAngle2, int32_t iExcludeAngle1, int32_t iExcludeAngle2)

bool	ConstructionCheck (C4PropList , int32_t iX, int32_t iY, C4Object pByObj=nullptr)

int32_t	PixCol2Mat (BYTE pixc)

bool	DensitySolid (int32_t dens)

bool	DensitySemiSolid (int32_t dens)

bool	DensityLiquid (int32_t dens)

int32_t	PixCol2Tex (BYTE pixc)

int32_t	GBackMat (int32_t x, int32_t y)

int32_t	GBackDensity (int32_t x, int32_t y)

bool	GBackSolid (int32_t x, int32_t y)

bool	GBackSemiSolid (int32_t x, int32_t y)

bool	GBackLiquid (int32_t x, int32_t y)

Variables
const int32_t	C4MaxMaterial = 125

const int32_t	C4LS_MaxRelights = 50

C4Landscape	Landscape

Enumeration Type Documentation

◆ LandscapeMode

enum LandscapeMode

strong

Enumerator
Undefined
Dynamic
Static
Exact

Definition at line 29 of file C4Landscape.h.

 {
     Undefined = 0,
     Dynamic = 1,
     Static = 2,
     Exact = 3
 };

Function Documentation

◆ AboveSemiSolid()

bool AboveSemiSolid	(	int32_t &	rx,
		int32_t &	ry
	)

Definition at line 2480 of file C4Landscape.cpp.

 {
     int32_t cy1 = ry, cy2 = ry;
     bool UseUpwardsNextFree = false, UseDownwardsNextSolid = false;
  
     while ((cy1 >= 0) || (cy2 < ::Landscape.GetHeight()))
     {
         // Check upwards
         if (cy1 >= 0)
         {
             if (GBackSemiSolid(rx, cy1)) UseUpwardsNextFree = true;
             else if (UseUpwardsNextFree) { ry = cy1; return true; }
         }
         // Check downwards
         if (cy2 < ::Landscape.GetHeight())
         {
             if (!GBackSemiSolid(rx, cy2)) UseDownwardsNextSolid = true;
             else if (UseDownwardsNextSolid) { ry = cy2; return true; }
         }
         // Advance
         cy1--; cy2++;
     }
  
     return false;
 }

References GBackSemiSolid(), C4Landscape::GetHeight(), and Landscape.

Referenced by FindConSiteSpot(), FindLevelGround(), FindSolidGround(), and FindSurfaceLiquid().

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◆ AboveSolid()

bool AboveSolid	(	int32_t &	rx,
		int32_t &	ry
	)

Definition at line 2507 of file C4Landscape.cpp.

 {
     int32_t cy1 = ry, cy2 = ry;
  
     while ((cy1 >= 0) || (cy2 < ::Landscape.GetHeight()))
     {
         // Check upwards
         if (cy1 >= 0)
             if (!GBackSemiSolid(rx, cy1))
                 if (GBackSolid(rx, cy1 + 1))
                 {
                     ry = cy1; return true;
                 }
         // Check downwards
         if (cy2 + 1 < ::Landscape.GetHeight())
             if (!GBackSemiSolid(rx, cy2))
                 if (GBackSolid(rx, cy2 + 1))
                 {
                     ry = cy2; return true;
                 }
         // Advance
         cy1--; cy2++;
     }
  
     return false;
 }

References GBackSemiSolid(), GBackSolid(), C4Landscape::GetHeight(), and Landscape.

Referenced by FindSolidGround().

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◆ ConstructionCheck()

bool ConstructionCheck	(	C4PropList *	PropList,
		int32_t	iX,
		int32_t	iY,
		C4Object *	pByObj = `nullptr`
	)

Definition at line 3069 of file C4Landscape.cpp.

 {
     C4Def *ndef;
     // Check def
     if (!(ndef = PropList->GetDef()))
     {
         if (pByObj) GameMsgObjectError(FormatString(LoadResStr("IDS_OBJ_UNDEF"), PropList->GetName()).getData(), pByObj);
         return false;
     }
     // Constructable?
     if (!ndef->Constructable)
     {
         if (pByObj) GameMsgObjectError(FormatString(LoadResStr("IDS_OBJ_NOCON"), ndef->GetName()).getData(), pByObj);
         return false;
     }
     // Check area
     int32_t rtx, rty, wdt, hgt;
     wdt = ndef->Shape.Wdt; hgt = ndef->Shape.Hgt - ndef->ConSizeOff;
     rtx = iX - wdt / 2; rty = iY - hgt;
     if (::Landscape.AreaSolidCount(rtx, rty, wdt, hgt) > (wdt*hgt / 20))
     {
         if (pByObj) GameMsgObjectError(LoadResStr("IDS_OBJ_NOROOM"), pByObj);
         return false;
     }
     if (::Landscape.AreaSolidCount(rtx, rty + hgt, wdt, 5) < (wdt * 2))
     {
         if (pByObj) GameMsgObjectError(LoadResStr("IDS_OBJ_NOLEVEL"), pByObj);
         return false;
     }
     // Check other structures
     C4Object *other;
     if ((other = Game.FindConstuctionSiteBlock(rtx, rty, wdt, hgt)))
     {
         if (pByObj) GameMsgObjectError(FormatString(LoadResStr("IDS_OBJ_NOOTHER"), other->GetName()).getData(), pByObj);
         return false;
     }
     return true;
 }

References C4Landscape::AreaSolidCount(), C4Def::ConSizeOff, C4Def::Constructable, C4Game::FindConstuctionSiteBlock(), FormatString(), Game, GameMsgObjectError(), StdStrBuf::getData(), C4PropList::GetDef(), C4PropList::GetName(), C4PropListStatic::GetName(), C4Rect::Hgt, Landscape, LoadResStr(), C4Def::Shape, and C4Rect::Wdt.

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◆ DensityLiquid()

bool DensityLiquid ( int32_t dens )

inline

Definition at line 206 of file C4Landscape.h.

 {
     return ((dens>=C4M_Liquid) && (dens<C4M_Solid));
 }

References C4M_Liquid, and C4M_Solid.

Referenced by C4MaterialMap::CrossMapMaterials(), GBackLiquid(), C4MaterialCore::Load(), and SimFlightHitsLiquid().

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◆ DensitySemiSolid()

bool DensitySemiSolid ( int32_t dens )

inline

Definition at line 201 of file C4Landscape.h.

 {
     return (dens>=C4M_SemiSolid);
 }

References C4M_SemiSolid.

Referenced by C4MaterialMap::CrossMapMaterials(), C4TextureMap::DefaultBkgMatTex(), GBackSemiSolid(), and C4ToolsDlg::SetTexture().

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◆ DensitySolid()

bool DensitySolid ( int32_t dens )

inline

Definition at line 196 of file C4Landscape.h.

 {
     return (dens>=C4M_Solid);
 }

References C4M_Solid.

Referenced by C4Landscape::CheckInstability(), C4MaterialMap::CrossMapMaterials(), C4Landscape::P::DoScan(), GBackSolid(), LandscapeFree(), C4MaterialCore::Load(), and PathFreeIgnoreVehiclePix().

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◆ FindClosestFree()

bool FindClosestFree	(	int32_t &	rX,
		int32_t &	rY,
		int32_t	iAngle1,
		int32_t	iAngle2,
		int32_t	iExcludeAngle1,
		int32_t	iExcludeAngle2
	)

Definition at line 3049 of file C4Landscape.cpp.

 {
     int32_t iX, iY;
     for (int32_t iR = Closest_Step; iR < Closest_MaxRange; iR += Closest_Step)
         for (int32_t iAngle = iAngle1; iAngle < iAngle2; iAngle += Closest_Step)
             if (!Inside(iAngle, iExcludeAngle1, iExcludeAngle2))
             {
                 iX = rX + fixtoi(Sin(itofix(iAngle))*iR);
                 iY = rY - fixtoi(Cos(itofix(iAngle))*iR);
                 if (Inside<int32_t>(iX, 0, ::Landscape.GetWidth() - 1))
                     if (Inside<int32_t>(iY, 0, ::Landscape.GetHeight() - 1))
                         if (!GBackSemiSolid(iX, iY))
                         {
                             rX = iX; rY = iY; return true;
                         }
             }
     return false;
 }

Referenced by C4Command::Get().

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◆ FindConSiteSpot()

bool FindConSiteSpot	(	int32_t &	rx,
		int32_t &	ry,
		int32_t	wdt,
		int32_t	hgt,
		int32_t	hrange = `-1`
	)

Definition at line 2806 of file C4Landscape.cpp.

 {
     bool fFound = false;
  
     // No hrange limit, use standard smooth surface limit
     if (hrange == -1) hrange = std::max(wdt / 4, 5);
  
     int32_t cx1, cx2, cy1, cy2, rh1, rh2, rl1, rl2;
  
     // Left offset starting position
     cx1 = std::min(rx + wdt / 2, ::Landscape.GetWidth() - 1); cy1 = ry;
     // No good: use centered starting position
     if (!AboveSemiSolid(cx1, cy1)) { cx1 = std::min<int32_t>(rx, ::Landscape.GetWidth() - 1); cy1 = ry; }
     // Right offset starting position
     cx2 = std::max(rx - wdt / 2, 0); cy2 = ry;
     // No good: use centered starting position
     if (!AboveSemiSolid(cx2, cy2)) { cx2 = std::min<int32_t>(rx, ::Landscape.GetWidth() - 1); cy2 = ry; }
  
     rh1 = cy1; rh2 = cy2; rl1 = rl2 = 0;
  
     for (cx1--, cx2++; (cx1 > 0) || (cx2 < ::Landscape.GetWidth()); cx1--, cx2++)
     {
         // Left search
         if (cx1 > 0) // Still going
         {
             if (!AboveSemiSolid(cx1, cy1))
                 cx1 = -1; // Abort left
             else
             {
                 if (GBackSolid(cx1, cy1 + 1) && (Abs(cy1 - rh1) < hrange))
                     rl1++; // Run okay
                 else
                 {
                     rl1 = 0; rh1 = cy1;
                 } // No run
             }
         }
  
         // Right search
         if (cx2 < ::Landscape.GetWidth()) // Still going
         {
             if (!AboveSemiSolid(cx2, cy2))
                 cx2 = ::Landscape.GetWidth(); // Abort right
             else
             {
                 if (GBackSolid(cx2, cy2 + 1) && (Abs(cy2 - rh2) < hrange))
                     rl2++; // Run okay
                 else
                 {
                     rl2 = 0; rh2 = cy2;
                 } // No run
             }
         }
  
         // Check runs & object overlap
         if (rl1 >= wdt) if (cx1 > 0)
             if (!Game.FindConstuctionSiteBlock(cx1, cy1 - hgt - 10, wdt, hgt + 40))
             {
                 rx = cx1 + wdt / 2; ry = cy1; fFound = true; break;
             }
         if (rl2 >= wdt) if (cx2 < ::Landscape.GetWidth())
             if (!Game.FindConstuctionSiteBlock(cx2 - wdt, cy2 - hgt - 10, wdt, hgt + 40))
             {
                 rx = cx2 - wdt / 2; ry = cy2; fFound = true; break;
             }
     }
  
     if (fFound) AboveSemiSolid(rx, ry);
  
     return fFound;
 }

References AboveSemiSolid(), Abs(), C4Game::FindConstuctionSiteBlock(), Game, GBackSolid(), C4Landscape::GetWidth(), and Landscape.

Referenced by C4Player::PlaceReadyBase(), and C4Player::ScenarioInit().

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◆ FindLevelGround()

bool FindLevelGround	(	int32_t &	rx,
		int32_t &	ry,
		int32_t	width,
		int32_t	hrange
	)

Definition at line 2752 of file C4Landscape.cpp.

 {
     bool fFound = false;
  
     int32_t cx1, cx2, cy1, cy2, rh1, rh2, rl1, rl2;
  
     cx1 = cx2 = rx; cy1 = cy2 = ry;
     rh1 = cy1; rh2 = cy2;
     rl1 = rl2 = 0;
  
     for (cx1--, cx2++; (cx1 > 0) || (cx2 < ::Landscape.GetWidth()); cx1--, cx2++)
     {
         // Left search
         if (cx1 > 0) // Still going
         {
             if (!AboveSemiSolid(cx1, cy1)) cx1 = -1; // Abort left
             else
             {
                 if (GBackSolid(cx1, cy1 + 1) && (Abs(cy1 - rh1) < hrange))
                     rl1++; // Run okay
                 else
                 {
                     rl1 = 0; rh1 = cy1;
                 } // No run
             }
         }
  
         // Right search
         if (cx2 < ::Landscape.GetWidth()) // Still going
         {
             if (!AboveSemiSolid(cx2, cy2)) cx2 = ::Landscape.GetWidth(); // Abort right
             else
             {
                 if (GBackSolid(cx2, cy2 + 1) && (Abs(cy2 - rh2) < hrange))
                     rl2++; // Run okay
                 else
                 {
                     rl2 = 0; rh2 = cy2;
                 } // No run
             }
         }
  
         // Check runs
         if (rl1 >= width) { rx = cx1 + rl1 / 2; ry = cy1; fFound = true; break; }
         if (rl2 >= width) { rx = cx2 - rl2 / 2; ry = cy2; fFound = true; break; }
     }
  
     if (fFound) AboveSemiSolid(rx, ry);
  
     return fFound;
 }

References AboveSemiSolid(), Abs(), GBackSolid(), C4Landscape::GetWidth(), and Landscape.

Referenced by C4Player::PlaceReadyVehic().

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◆ FindLiquid()

bool FindLiquid	(	int32_t &	rx,
		int32_t &	ry,
		int32_t	width,
		int32_t	height
	)

Definition at line 2696 of file C4Landscape.cpp.

 {
     int32_t cx1, cx2, cy1, cy2, rl1 = 0, rl2 = 0;
  
     for (cx1 = cx2 = rx, cy1 = cy2 = ry; (cx1 > 0) || (cx2 < ::Landscape.GetWidth()); cx1--, cx2++)
     {
         // Left search
         if (cx1 > 0)
         {
             if (FindLiquidHeight(cx1, cy1, height)) rl1++;
             else rl1 = 0;
         }
         // Right search
         if (cx2 < ::Landscape.GetWidth())
         {
             if (FindLiquidHeight(cx2, cy2, height)) rl2++;
             else rl2 = 0;
         }
         // Check runs
         if (rl1 >= width) { rx = cx1 + rl1 / 2; ry = cy1; return true; }
         if (rl2 >= width) { rx = cx2 - rl2 / 2; ry = cy2; return true; }
     }
  
     return false;
 }

References FindLiquidHeight(), C4Landscape::GetWidth(), and Landscape.

Referenced by C4Game::PlaceAnimal().

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◆ FindSolidGround()

bool FindSolidGround	(	int32_t &	rx,
		int32_t &	ry,
		int32_t	width
	)

Definition at line 2626 of file C4Landscape.cpp.

 {
     bool fFound = false;
  
     int32_t cx1, cx2, cy1, cy2, rl1 = 0, rl2 = 0;
  
     for (cx1 = cx2 = rx, cy1 = cy2 = ry; (cx1 > 0) || (cx2 < ::Landscape.GetWidth()); cx1--, cx2++)
     {
         // Left search
         if (cx1 >= 0) // Still going
         {
             if (AboveSolid(cx1, cy1)) rl1++; // Run okay
             else rl1 = 0; // No run
         }
         // Right search
         if (cx2 < ::Landscape.GetWidth()) // Still going
         {
             if (AboveSolid(cx2, cy2)) rl2++; // Run okay
             else rl2 = 0; // No run
         }
         // Check runs
         if (rl1 >= width) { rx = cx1 + rl1 / 2; ry = cy1; fFound = true; break; }
         if (rl2 >= width) { rx = cx2 - rl2 / 2; ry = cy2; fFound = true; break; }
     }
  
     if (fFound) AboveSemiSolid(rx, ry);
  
     return fFound;
 }

References AboveSemiSolid(), AboveSolid(), C4Landscape::GetWidth(), and Landscape.

Referenced by C4Game::PlaceAnimal(), C4Player::PlaceReadyCrew(), C4Player::PlaceReadyMaterial(), and C4Player::ScenarioInit().

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◆ FindSurfaceLiquid()

bool FindSurfaceLiquid	(	int32_t &	rx,
		int32_t &	ry,
		int32_t	width,
		int32_t	height
	)

Definition at line 2656 of file C4Landscape.cpp.

 {
     bool fFound = false;
  
     int32_t cx1, cx2, cy1, cy2, rl1 = 0, rl2 = 0, cnt;
     bool lokay;
     for (cx1 = cx2 = rx, cy1 = cy2 = ry; (cx1 > 0) || (cx2 < ::Landscape.GetWidth()); cx1--, cx2++)
     {
         // Left search
         if (cx1 > 0) // Still going
         {
             if (!AboveSemiSolid(cx1, cy1)) cx1 = -1; // Abort left
             else
             {
                 for (lokay = true, cnt = 0; cnt < height; cnt++) if (!GBackLiquid(cx1, cy1 + 1 + cnt)) lokay = false;
                 if (lokay) rl1++; // Run okay
                 else rl1 = 0; // No run
             }
         }
         // Right search
         if (cx2 < ::Landscape.GetWidth()) // Still going
         {
             if (!AboveSemiSolid(cx2, cy2)) cx2 = ::Landscape.GetWidth(); // Abort right
             else
             {
                 for (lokay = true, cnt = 0; cnt < height; cnt++) if (!GBackLiquid(cx2, cy2 + 1 + cnt)) lokay = false;
                 if (lokay) rl2++; // Run okay
                 else rl2 = 0; // No run
             }
         }
         // Check runs
         if (rl1 >= width) { rx = cx1 + rl1 / 2; ry = cy1; fFound = true; break; }
         if (rl2 >= width) { rx = cx2 - rl2 / 2; ry = cy2; fFound = true; break; }
     }
  
     if (fFound) AboveSemiSolid(rx, ry);
  
     return fFound;
 }

References AboveSemiSolid(), GBackLiquid(), C4Landscape::GetWidth(), and Landscape.

Referenced by C4Game::PlaceAnimal().

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◆ FindThrowingPosition()

bool FindThrowingPosition	(	int32_t	iTx,
		int32_t	iTy,
		C4Real	fXDir,
		C4Real	fYDir,
		int32_t	iHeight,
		int32_t &	rX,
		int32_t &	rY
	)

Definition at line 3014 of file C4Landscape.cpp.

 {
  
     // Start underneath throwing target
     rX = iTx; rY = iTy;                             // improve: check from overhanging cliff
     if (!SemiAboveSolid(rX, rY)) return false;
  
     // Target too far above surface
     if (!Inside(rY - iTy, -Throwing_MaxVertical, +Throwing_MaxVertical)) return false;
  
     // Search in direction according to launch fXDir
     int32_t iDir = +1; if (fXDir > 0) iDir = -1;
  
     // Move along surface
     for (int32_t cnt = 0; Inside<int32_t>(rX, 0, ::Landscape.GetWidth() - 1) && (cnt <= Throwing_MaxHorizontal); rX += iDir, cnt++)
     {
         // Adjust to surface
         if (!SemiAboveSolid(rX, rY)) return false;
  
         // Check trajectory distance
         int32_t itjd = TrajectoryDistance(rX, rY - iHeight, fXDir, fYDir, iTx, iTy);
  
         // Hitting range: success
         if (itjd <= 2) return true;
     }
  
     // Failure
     return false;
  
 }

References Inside(), and SemiAboveSolid().

Referenced by C4Command::Put(), and C4Command::Throw().

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◆ FindTunnel()

bool FindTunnel	(	int32_t &	rx,
		int32_t &	ry,
		int32_t	width,
		int32_t	height
	)

Definition at line 2724 of file C4Landscape.cpp.

 {
     int32_t cx1, cx2, cy1, cy2, rl1 = 0, rl2 = 0;
  
     for (cx1 = cx2 = rx, cy1 = cy2 = ry; (cx1 > 0) || (cx2 < ::Landscape.GetWidth()); cx1--, cx2++)
     {
         // Left search
         if (cx1 > 0)
         {
             if (FindTunnelHeight(cx1, cy1, height)) rl1++;
             else rl1 = 0;
         }
         // Right search
         if (cx2 < ::Landscape.GetWidth())
         {
             if (FindTunnelHeight(cx2, cy2, height)) rl2++;
             else rl2 = 0;
         }
         // Check runs
         if (rl1 >= width) { rx = cx1 + rl1 / 2; ry = cy1; return true; }
         if (rl2 >= width) { rx = cx2 - rl2 / 2; ry = cy2; return true; }
     }
  
     return false;
 }

References FindTunnelHeight(), C4Landscape::GetWidth(), and Landscape.

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◆ GBackDensity()

int32_t GBackDensity	(	int32_t	x,
		int32_t	y
	)

inline

Definition at line 224 of file C4Landscape.h.

 {
     return ::Landscape.GetDensity(x, y);
 }

References C4Landscape::GetDensity(), and Landscape.

Referenced by C4Particle::Exec(), C4PXS::Execute(), GBackLiquid(), GBackSemiSolid(), GBackSolid(), C4DensityProvider::GetDensity(), C4Command::JumpControl(), LandscapeFree(), SimFlight(), and SimFlightHitsLiquid().

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◆ GBackLiquid()

bool GBackLiquid	(	int32_t	x,
		int32_t	y
	)

inline

Definition at line 239 of file C4Landscape.h.

 {
     return DensityLiquid(GBackDensity(x,y));
 }

References DensityLiquid(), and GBackDensity().

Referenced by FindLiquidHeight(), FindSurfaceLiquid(), InitGameFunctionMap(), C4Object::IsInLiquidCheck(), and SimFlightHitsLiquid().

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◆ GBackMat()

int32_t GBackMat	(	int32_t	x,
		int32_t	y
	)

inline

Definition at line 219 of file C4Landscape.h.

 {
     return ::Landscape.GetMat(x, y);
 }

References C4Landscape::GetMat(), and Landscape.

Referenced by C4EditCursor::ApplyToolPicker(), C4Shape::Attach(), C4Shape::ContactCheck(), C4MassMover::Corrosion(), C4Object::ExecLife(), C4MassMover::Execute(), C4PXS::Execute(), FindTunnelHeight(), C4MassMover::Init(), C4MaterialMap::mrfConvert(), and C4Game::PlaceInEarth().

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◆ GBackSemiSolid()

bool GBackSemiSolid	(	int32_t	x,
		int32_t	y
	)

inline

Definition at line 234 of file C4Landscape.h.

 {
     return DensitySemiSolid(GBackDensity(x,y));
 }

References DensitySemiSolid(), and GBackDensity().

Referenced by AboveSemiSolid(), AboveSolid(), AdjustMoveToTarget(), C4Object::ContactAction(), C4Object::ExecLife(), InitGameFunctionMap(), C4Game::PlaceAnimal(), C4Object::SetOCF(), and C4Object::UpdateOCF().

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◆ GBackSolid()

bool GBackSolid	(	int32_t	x,
		int32_t	y
	)

inline

Definition at line 229 of file C4Landscape.h.

 {
     return DensitySolid(GBackDensity(x,y));
 }

References DensitySolid(), and GBackDensity().

Referenced by AboveSolid(), AdjustMoveToTarget(), AdjustSolidOffset(), C4Object::AdjustWalkRotation(), C4Landscape::AreaSolidCount(), C4Landscape::CheckInstability(), FindConSiteSpot(), FindLevelGround(), C4Command::FlightControl(), C4TransferZone::GetEntryPoint(), InitGameFunctionMap(), C4Command::JumpControl(), PathFree(), PathFreePix(), C4Landscape::P::PostFreeShape(), C4Landscape::RaiseTerrain(), SemiAboveSolid(), C4Object::SetOCF(), SolidOnWhichSide(), TrajectoryDistance(), C4FoWLightSection::Update(), C4Object::UpdateOCF(), and VisibilityCheck().

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◆ PathFree() [1/2]

bool PathFree	(	int32_t	x1,
		int32_t	y1,
		int32_t	x2,
		int32_t	y2
	)

Definition at line 2884 of file C4Landscape.cpp.

 {
     return ForLine(x1, y1, x2, y2, &PathFreePix);
 }

References PathFreePix().

Referenced by C4Command::Get(), C4Command::JumpControl(), C4Shape::LineConnect(), C4Command::MoveTo(), and ReduceLineSegments().

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◆ PathFree() [2/2]

bool PathFree	(	int32_t	x1,
		int32_t	y1,
		int32_t	x2,
		int32_t	y2,
		int32_t *	ix,
		int32_t *	iy
	)

Definition at line 2889 of file C4Landscape.cpp.

 {
     // use the standard Bresenham algorithm and just adjust it to behave correctly in the inversed case
     bool reverse = false;
     bool steep = Abs(y2 - y1) > Abs(x2 - x1);
  
     if (steep)
     {
         std::swap(x1, y1);
         std::swap(x2, y2);
     }
  
     if (x1 > x2)
     {
         std::swap(x1, x2);
         std::swap(y1, y2);
         reverse = true;
     }
  
     if (!reverse)
     {
         int32_t deltax = x2 - x1;
         int32_t deltay = Abs(y2 - y1);
         int32_t error = 0;
         int32_t ystep = (y1 < y2) ? 1 : -1;
         int32_t y = y1;
  
         for (int32_t x = x1; x <= x2; x++)
         {
             if (steep)
             {
                 if (GBackSolid(y, x))
                 {
                     if (ix) { *ix = y; *iy = x; }
                     return false;
                 }
             }
             else
             {
                 if (GBackSolid(x, y))
                 {
                     if (ix) { *ix = x; *iy = y; }
                     return false;
                 }
             }
  
             error += deltay;
             if (2 * error >= deltax)
             {
                 y += ystep;
                 error -= deltax;
             }
         }
     }
     else // reverse
     {
         int32_t deltax = x2 - x1;
         int32_t deltay = Abs(y2 - y1);
         int32_t error = 0;
         int32_t ystep = (y1 < y2) ? 1 : -1;
         int32_t y = y2;
  
         // normal (inverse) routine
         for (int32_t x = x2; x >= x1; x--)
         {
             if (steep)
             {
                 if (GBackSolid(y, x))
                 {
                     if (ix) { *ix = y; *iy = x; }
                     return false;
                 }
             }
             else
             {
                 if (GBackSolid(x, y))
                 {
                     if (ix) { *ix = x; *iy = y; }
                     return false;
                 }
             }
  
             error -= deltay;
             if (2 * error <= -deltax)
             {
                 y -= ystep;
                 error += deltax;
             }
  
         }
     }
     // no solid material encountered: path free!
     return true;
 }

References Abs(), GBackSolid(), CPolyEdge::x, and CPolyEdge::y.

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◆ PathFreeIgnoreVehicle()

bool PathFreeIgnoreVehicle	(	int32_t	x1,
		int32_t	y1,
		int32_t	x2,
		int32_t	y2,
		int32_t *	ix = `nullptr`,
		int32_t *	iy = `nullptr`
	)

Definition at line 2990 of file C4Landscape.cpp.

 {
     return ForLine(x1, y1, x2, y2, &PathFreeIgnoreVehiclePix, ix, iy);
 }

References PathFreeIgnoreVehiclePix().

Referenced by C4Shape::LineConnect().

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◆ PixCol2Mat()

int32_t PixCol2Mat ( BYTE pixc )

Definition at line 1943 of file C4Landscape.cpp.

 {
     // Get texture
     int32_t iTex = PixCol2Tex(pixc);
     if (!iTex) return MNone;
     // Get material-texture mapping
     const C4TexMapEntry *pTex = ::TextureMap.GetEntry(iTex);
     // Return material
     return pTex ? pTex->GetMaterialIndex() : MNone;
 }

References C4TextureMap::GetEntry(), C4TexMapEntry::GetMaterialIndex(), MNone, PixCol2Tex(), and TextureMap.

Referenced by C4Landscape::P::DoScan(), C4Landscape::RaiseTerrain(), and C4Landscape::UpdatePixMaps().

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◆ PixCol2Tex()

int32_t PixCol2Tex ( BYTE pixc )

inline

Definition at line 211 of file C4Landscape.h.

 {
     // Validate
     if (pixc >= C4M_MaxTexIndex) return 0;
     // Done
     return pixc;
 }

References C4M_MaxTexIndex.

Referenced by C4TextureMap::DefaultBkgMatTex(), and PixCol2Mat().

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◆ SemiAboveSolid()

bool SemiAboveSolid	(	int32_t &	rx,
		int32_t &	ry
	)

Definition at line 2535 of file C4Landscape.cpp.

 {
     int32_t cy1 = ry, cy2 = ry;
  
     while ((cy1 >= 0) || (cy2 < ::Landscape.GetHeight()))
     {
         // Check upwards
         if (cy1 >= 0)
             if (!GBackSolid(rx, cy1))
                 if (GBackSolid(rx, cy1 + 1))
                 {
                     ry = cy1; return true;
                 }
         // Check downwards
         if (cy2 + 1 < ::Landscape.GetHeight())
             if (!GBackSolid(rx, cy2))
                 if (GBackSolid(rx, cy2 + 1))
                 {
                     ry = cy2; return true;
                 }
         // Advance
         cy1--; cy2++;
     }
  
     return false;
 }

References GBackSolid(), C4Landscape::GetHeight(), and Landscape.

Referenced by FindThrowingPosition().

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Variable Documentation

◆ C4LS_MaxRelights

const int32_t C4LS_MaxRelights = 50

Definition at line 27 of file C4Landscape.h.

Referenced by C4Landscape::_SetPix2(), and C4Landscape::DoRelights().

◆ C4MaxMaterial

const int32_t C4MaxMaterial = 125

Definition at line 25 of file C4Landscape.h.

Referenced by C4MaterialList::Add(), C4MaterialMap::CrossMapMaterials(), C4MaterialList::Get(), and C4MaterialList::Set().

◆ Landscape

C4Landscape Landscape

extern

Definition at line 4350 of file C4Landscape.cpp.

Referenced by AboveSemiSolid(), AboveSolid(), C4TextureMap::AddEntry(), AdjustMoveToTarget(), C4Viewport::AdjustPosition(), C4EditCursor::ApplyToolBrush(), C4EditCursor::ApplyToolFill(), C4EditCursor::ApplyToolLine(), C4EditCursor::ApplyToolPicker(), C4EditCursor::ApplyToolRect(), C4ToolsDlg::AssertValidBackTexture(), C4ToolsDlg::AssertValidTexture(), C4Viewport::CalculateZoom(), C4Viewport::CenterPosition(), C4SolidMask::CheckConsistency(), C4Game::Clear(), C4Game::ClearPointers(), C4Game::CompileFunc(), ConstructionCheck(), C4Shape::ContactCheck(), C4FoWAmbient::CreateFromLandscape(), C4Game::CreateObjectConstruction(), C4Game::Default(), C4GraphicsSystem::DoSaveScreenshot(), C4Landscape::P::DoScan(), C4PXSSystem::Draw(), C4Viewport::Draw(), C4TextureShape::Draw(), C4Viewport::EnableFoW(), C4Object::ExecMovement(), C4Game::Execute(), C4MassMover::Execute(), C4PXS::Execute(), C4Player::Execute(), FindConSiteSpot(), FindLevelGround(), FindLiquid(), FindLiquidHeight(), FindSolidGround(), FindSurfaceLiquid(), FindTunnel(), FindTunnelHeight(), GBackDensity(), GBackMat(), C4Sky::GetSkyFadeClr(), C4Weather::GetWind(), C4Player::Init(), C4MassMover::Init(), C4Game::InitInEarth(), C4Game::InitVegetation(), C4Viewport::InitZoom(), LandscapeFree(), C4Game::LoadScenarioSection(), C4MaterialMap::mrfCorrode(), C4MaterialMap::mrfIncinerate(), C4MaterialMap::mrfInsert(), mrfInsertCheck(), C4MaterialMap::mrfPoof(), PathFreeIgnoreVehiclePix(), C4Game::PlaceAnimal(), C4Game::PlaceInEarth(), C4SolidMask::Put(), C4SolidMask::PutSolidMasks(), C4SolidMask::PutTemporary(), C4Landscape::RaiseTerrain(), C4SolidMask::Remove(), C4SolidMask::RemoveSolidMasks(), C4SolidMask::RemoveTemporary(), C4SolidMask::Repair(), C4Console::SaveScenario(), C4Player::ScenarioInit(), C4Player::ScrollView(), SemiAboveSolid(), C4ToolsDlg::SetBackMaterial(), C4ToolsDlg::SetLandscapeMode(), C4ToolsDlg::SetMaterial(), C4Viewport::SetViewX(), C4Viewport::SetViewY(), C4Object::SideBounds(), SimFlight(), C4Object::StatusDeactivate(), C4Game::Synchronize(), TrajectoryDistance(), C4FoWLightSection::Update(), C4MouseControl::UpdateFogOfWar(), C4FoWAmbient::UpdateFromLandscape(), C4Object::UpdateLight(), C4EditCursor::UpdateStatusBar(), and C4Object::VerticalBounds().

Classes

Enumerations

Functions

Variables

Enumeration Type Documentation

◆ LandscapeMode

Function Documentation

◆ AboveSemiSolid()

◆ AboveSolid()

◆ ConstructionCheck()

◆ DensityLiquid()

◆ DensitySemiSolid()

◆ DensitySolid()

◆ FindClosestFree()

◆ FindConSiteSpot()

◆ FindLevelGround()

◆ FindLiquid()

◆ FindSolidGround()

◆ FindSurfaceLiquid()

◆ FindThrowingPosition()

◆ FindTunnel()

◆ GBackDensity()

◆ GBackLiquid()

◆ GBackMat()

◆ GBackSemiSolid()

◆ GBackSolid()

◆ PathFree() [1/2]

◆ PathFree() [2/2]

◆ PathFreeIgnoreVehicle()

◆ PixCol2Mat()

◆ PixCol2Tex()

◆ SemiAboveSolid()

Variable Documentation

◆ C4LS_MaxRelights

◆ C4MaxMaterial

◆ Landscape