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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "GroundMoveMath.h"
#include "Map/ReadMap.h"
#include "Sim/Objects/SolidObject.h"
#include "Sim/Features/Feature.h"
CR_BIND_DERIVED(CGroundMoveMath, CMoveMath, );
float CGroundMoveMath::waterDamageCost = 1.0f;
/*
Calculate speed-multiplier for given height and slope data.
*/
float CGroundMoveMath::SpeedMod(const MoveData& moveData, float height, float slope) const
{
float speedMod = 0.0f;
// too steep or too deep?
if (slope > moveData.maxSlope)
return speedMod;
if (-height > moveData.depth)
return speedMod;
// slope-mod
speedMod = 1.0f / (1.0f + slope * moveData.slopeMod);
speedMod *= ((height < 0.0f)? waterDamageCost: 1.0f);
speedMod *= moveData.GetDepthMod(height);
return speedMod;
}
float CGroundMoveMath::SpeedMod(const MoveData& moveData, float height, float slope, float moveSlope) const
{
float speedMod = 0.0f;
// too steep or too deep?
if ((slope * moveSlope) > moveData.maxSlope)
return speedMod;
if ((moveSlope < 0) && (-height > moveData.depth))
return speedMod;
// slope-mod
speedMod = 1.0f / (1.0f + std::max(0.0f, slope * moveSlope) * moveData.slopeMod);
speedMod *= ((height < 0.0f)? waterDamageCost: 1.0f);
speedMod *= moveData.GetDepthMod(height);
return speedMod;
}
/*
Gives the ground-level of given square.
*/
float CGroundMoveMath::yLevel(int xSquare, int zSquare) const
{
return readmap->GetCenterHeightMapSynced()[xSquare + zSquare * gs->mapx];
}
float CGroundMoveMath::yLevel(const float3& pos) const
{
return (ground->GetHeightReal(pos.x, pos.z) + 10.0f);
}
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