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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "System/mmgr.h"
#include "MetalMap.h"
#include "ReadMap.h"
#include "System/Config/ConfigHandler.h"
#include "System/myMath.h"
CONFIG(bool, MetalMapPalette).defaultValue(false);
CR_BIND(CMetalMap,(NULL, 0, 0, 0.0f));
CR_REG_METADATA(CMetalMap,(
CR_MEMBER(extractionMap)
));
CMetalMap::CMetalMap(const unsigned char* map, int _sizeX, int _sizeZ, float _metalScale)
: metalScale(_metalScale)
, sizeX(_sizeX)
, sizeZ(_sizeZ)
{
extractionMap.resize(sizeX * sizeZ, 0.0f);
metalMap.resize(sizeX * sizeZ, 0);
if (map != NULL) {
memcpy(&metalMap[0], map, sizeX * sizeZ);
} else {
metalScale = 1.0f;
}
if (configHandler->GetBool("MetalMapPalette")) {
/* Swap the green and blue channels. making metal go
black -> blue -> cyan,
rather than the usual black -> green -> cyan. */
for (int a = 0; a < 256; ++a) {
metalPal[a * 3 + 0] = a;
metalPal[a * 3 + 1] = std::max(0, a * 2 - 255);
metalPal[a * 3 + 2] = std::min(255, a * 2);
}
} else {
for (int a = 0; a < 256; ++a) {
metalPal[a * 3 + 0] = a;
metalPal[a * 3 + 1] = std::min(255, a * 2);
metalPal[a * 3 + 2] = std::max(0, a * 2 - 255);
}
}
}
CMetalMap::~CMetalMap()
{
}
static inline void ClampInt(int& var, int min, int maxPlusOne)
{
if (var < min) {
var = min;
} else if (var >= maxPlusOne) {
var = maxPlusOne - 1;
}
}
float CMetalMap::GetMetalAmount(int x1, int z1, int x2, int z2)
{
ClampInt(x1, 0, sizeX);
ClampInt(x2, 0, sizeX);
ClampInt(z1, 0, sizeZ);
ClampInt(z2, 0, sizeZ);
float metal = 0.0f;
int x, z;
for (x = x1; x < x2; x++) {
for (z = z1; z < z2; z++) {
metal += metalMap[(z * sizeX) + x];
}
}
return metal * metalScale;
}
float CMetalMap::GetMetalAmount(int x, int z)
{
ClampInt(x, 0, sizeX);
ClampInt(z, 0, sizeZ);
return metalMap[(z * sizeX) + x] * metalScale;
}
void CMetalMap::SetMetalAmount(int x, int z, float m)
{
ClampInt(x, 0, sizeX);
ClampInt(z, 0, sizeZ);
metalMap[(z * sizeX) + x] = (metalScale == 0.0f) ? 0 : Clamp((int)(m / metalScale), 0, 255);
}
float CMetalMap::RequestExtraction(int x, int z, float toDepth)
{
ClampInt(x, 0, sizeX);
ClampInt(z, 0, sizeZ);
const float current = extractionMap[(z * sizeX) + x];
if (toDepth <= current) {
return 0.0f;
}
const float available = toDepth - current;
extractionMap[(z * sizeX) + x] = toDepth;
return available;
}
void CMetalMap::RemoveExtraction(int x, int z, float depth)
{
ClampInt(x, 0, sizeX);
ClampInt(z, 0, sizeZ);
extractionMap[(z * sizeX) + x] -= depth;
}
int CMetalMap::GetMetalExtraction(int x, int z)
{
ClampInt(x, 0, sizeX);
ClampInt(z, 0, sizeZ);
return extractionMap[(z * sizeX) + x];
}
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