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MoveDefHandler.cpp
428 lines (332 loc) · 13.7 KB
/
MoveDefHandler.cpp
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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "MoveDefHandler.h"
#include "Lua/LuaParser.h"
#include "Map/ReadMap.h"
#include "Map/MapInfo.h"
#include "MoveMath/MoveMath.h"
#include "Sim/Misc/GlobalConstants.h"
#include "System/creg/STL_Map.h"
#include "System/Exceptions.h"
#include "System/CRC.h"
#include "System/myMath.h"
#include "System/StringUtil.h"
CR_BIND(MoveDef, ())
CR_BIND(MoveDefHandler, (nullptr))
CR_REG_METADATA(MoveDef, (
CR_MEMBER(name),
CR_MEMBER(speedModClass),
CR_MEMBER(terrainClass),
CR_MEMBER(xsize),
CR_MEMBER(xsizeh),
CR_MEMBER(zsize),
CR_MEMBER(zsizeh),
CR_MEMBER(depth),
CR_MEMBER(depthModParams),
CR_MEMBER(maxSlope),
CR_MEMBER(slopeMod),
CR_MEMBER(crushStrength),
CR_MEMBER(speedModMults),
CR_MEMBER(pathType),
CR_MEMBER(udRefCount),
CR_MEMBER(followGround),
CR_MEMBER(subMarine),
CR_MEMBER(avoidMobilesOnPath),
CR_MEMBER(allowTerrainCollisions),
CR_MEMBER(allowRawMovement),
CR_MEMBER(heatMapping),
CR_MEMBER(flowMapping),
CR_MEMBER(heatMod),
CR_MEMBER(flowMod),
CR_MEMBER(heatProduced)
))
CR_REG_METADATA(MoveDefHandler, (
CR_MEMBER(moveDefs),
CR_MEMBER(moveDefNames),
CR_MEMBER(checksum)
))
MoveDefHandler* moveDefHandler;
// FIXME: do something with these magic numbers
static const float MAX_ALLOWED_WATER_DAMAGE_GMM = 1e3f;
static const float MAX_ALLOWED_WATER_DAMAGE_HMM = 1e4f;
static float DegreesToMaxSlope(float degrees)
{
// Prevent MSVC from inlining stuff that would break the
// PE checksum compatibility between debug and release
static constexpr float degToRad = math::DEG_TO_RAD;
const float deg = Clamp(degrees, 0.0f, 60.0f) * 1.5f;
const float rad = deg * degToRad;
return (1.0f - math::cos(rad));
}
static MoveDef::SpeedModClass ParseSpeedModClass(const std::string& moveDefName, const LuaTable& moveDefTable)
{
const int speedModClass = moveDefTable.GetInt("speedModClass", -1);
if (speedModClass != -1)
return Clamp(MoveDef::SpeedModClass(speedModClass), MoveDef::Tank, MoveDef::Ship);
// name-based fallbacks
if (moveDefName.find( "boat") != string::npos)
return MoveDef::Ship;
if (moveDefName.find( "ship") != string::npos)
return MoveDef::Ship;
if (moveDefName.find("hover") != string::npos)
return MoveDef::Hover;
if (moveDefName.find( "tank") != string::npos)
return MoveDef::Tank;
return MoveDef::KBot;
}
MoveDefHandler::MoveDefHandler(LuaParser* defsParser)
{
const LuaTable& rootTable = defsParser->GetRoot().SubTable("MoveDefs");
if (!rootTable.IsValid())
throw content_error("Error loading movement definitions");
CRC crc;
for (int tt = 0; tt < CMapInfo::NUM_TERRAIN_TYPES; ++tt) {
const CMapInfo::TerrainType& terrType = mapInfo->terrainTypes[tt];
crc << terrType.tankSpeed << terrType.kbotSpeed;
crc << terrType.hoverSpeed << terrType.shipSpeed;
}
moveDefs.reserve(rootTable.GetLength());
for (size_t num = 1; /* no test */; num++) {
const LuaTable& moveDefTable = rootTable.SubTable(num);
if (!moveDefTable.IsValid())
break;
moveDefs.emplace_back(moveDefTable, num);
const MoveDef& md = moveDefs.back();
moveDefNames[md.name] = md.pathType;
crc << md.GetCheckSum();
}
CMoveMath::noHoverWaterMove = (mapInfo->water.damage >= MAX_ALLOWED_WATER_DAMAGE_HMM);
CMoveMath::waterDamageCost = (mapInfo->water.damage >= MAX_ALLOWED_WATER_DAMAGE_GMM)?
0.0f: (1.0f / (1.0f + mapInfo->water.damage * 0.1f));
crc << CMoveMath::waterDamageCost;
crc << CMoveMath::noHoverWaterMove;
checksum = crc.GetDigest();
}
MoveDef* MoveDefHandler::GetMoveDefByName(const std::string& name)
{
auto it = moveDefNames.find(name);
if (it == moveDefNames.end())
return nullptr;
return &moveDefs[it->second];
}
MoveDef::MoveDef()
: name("")
, speedModClass(MoveDef::Tank)
, terrainClass(MoveDef::Mixed)
, xsize(0)
, xsizeh(0)
, zsize(0)
, zsizeh(0)
, depth(0.0f)
, maxSlope(1.0f)
, slopeMod(0.0f)
, crushStrength(0.0f)
, pathType(0)
, udRefCount(0)
, heatMod(0.05f)
, flowMod(1.0f)
, heatProduced(GAME_SPEED)
, followGround(true)
, subMarine(false)
, avoidMobilesOnPath(true)
, allowTerrainCollisions(true)
, allowRawMovement(false)
, heatMapping(true)
, flowMapping(true)
{
depthModParams[DEPTHMOD_MIN_HEIGHT] = 0.0f;
depthModParams[DEPTHMOD_MAX_HEIGHT] = std::numeric_limits<float>::max();
depthModParams[DEPTHMOD_MAX_SCALE ] = std::numeric_limits<float>::max();
depthModParams[DEPTHMOD_QUA_COEFF ] = 0.0f;
depthModParams[DEPTHMOD_LIN_COEFF ] = 0.1f;
depthModParams[DEPTHMOD_CON_COEFF ] = 1.0f;
speedModMults[SPEEDMOD_MOBILE_BUSY_MULT] = 0.10f;
speedModMults[SPEEDMOD_MOBILE_IDLE_MULT] = 0.35f;
speedModMults[SPEEDMOD_MOBILE_MOVE_MULT] = 0.65f;
speedModMults[SPEEDMOD_MOBILE_NUM_MULTS] = 0.0f;
}
MoveDef::MoveDef(const LuaTable& moveDefTable, int moveDefID) {
*this = MoveDef();
name = StringToLower(moveDefTable.GetString("name", ""));
pathType = moveDefID - 1;
crushStrength = moveDefTable.GetFloat("crushStrength", 10.0f);
const LuaTable& depthModTable = moveDefTable.SubTable("depthModParams");
const LuaTable& speedModMultsTable = moveDefTable.SubTable("speedModMults");
const float minWaterDepth = moveDefTable.GetFloat("minWaterDepth", GetDefaultMinWaterDepth());
const float maxWaterDepth = moveDefTable.GetFloat("maxWaterDepth", GetDefaultMaxWaterDepth());
switch ((speedModClass = ParseSpeedModClass(name, moveDefTable))) {
case MoveDef::Tank: {
// fall-through
}
case MoveDef::KBot: {
depthModParams[DEPTHMOD_MIN_HEIGHT] = std::max(0.00f, depthModTable.GetFloat("minHeight", 0.0f ));
depthModParams[DEPTHMOD_MAX_HEIGHT] = ( depthModTable.GetFloat("maxHeight", std::numeric_limits<float>::max() ));
depthModParams[DEPTHMOD_MAX_SCALE ] = std::max(0.01f, depthModTable.GetFloat("maxScale", std::numeric_limits<float>::max() ));
depthModParams[DEPTHMOD_QUA_COEFF ] = std::max(0.00f, depthModTable.GetFloat("quadraticCoeff", 0.0f ));
depthModParams[DEPTHMOD_LIN_COEFF ] = std::max(0.00f, depthModTable.GetFloat("linearCoeff", moveDefTable.GetFloat("depthMod", 0.1f)));
depthModParams[DEPTHMOD_CON_COEFF ] = std::max(0.00f, depthModTable.GetFloat("constantCoeff", 1.0f ));
// ensure [depthModMinHeight, depthModMaxHeight] is a valid range
depthModParams[DEPTHMOD_MAX_HEIGHT] = std::max(depthModParams[DEPTHMOD_MIN_HEIGHT], depthModParams[DEPTHMOD_MAX_HEIGHT]);
depth = maxWaterDepth;
maxSlope = DegreesToMaxSlope(moveDefTable.GetFloat("maxSlope", 60.0f));
} break;
case MoveDef::Hover: {
depth = maxWaterDepth;
maxSlope = DegreesToMaxSlope(moveDefTable.GetFloat("maxSlope", 15.0f));
} break;
case MoveDef::Ship: {
depth = minWaterDepth;
subMarine = moveDefTable.GetBool("subMarine", false);
} break;
}
speedModMults[SPEEDMOD_MOBILE_BUSY_MULT] = std::max(0.01f, speedModMultsTable.GetFloat("mobileBusyMult", 1.0f /*0.10f*/));
speedModMults[SPEEDMOD_MOBILE_IDLE_MULT] = std::max(0.01f, speedModMultsTable.GetFloat("mobileIdleMult", 1.0f /*0.35f*/));
speedModMults[SPEEDMOD_MOBILE_MOVE_MULT] = std::max(0.01f, speedModMultsTable.GetFloat("mobileMoveMult", 1.0f /*0.65f*/));
avoidMobilesOnPath = moveDefTable.GetBool("avoidMobilesOnPath", true);
allowTerrainCollisions = moveDefTable.GetBool("allowTerrainCollisions", true);
allowRawMovement = moveDefTable.GetBool("allowRawMovement", false);
heatMapping = moveDefTable.GetBool("heatMapping", false);
flowMapping = moveDefTable.GetBool("flowMapping", true);
heatMod = moveDefTable.GetFloat("heatMod", (1.0f / (GAME_SPEED * 2)) * 0.25f);
flowMod = moveDefTable.GetFloat("flowMod", 1.0f);
// by default heat decays to zero after N=2 seconds
//
// the cost contribution to a square from heat must
// be on the same order as its normal movement cost
// PER FRAME, i.e. such that heatMod * heatProduced
// ~= O(1 / (GAME_SPEED * N)) because unit behavior
// in groups quickly becomes FUBAR if heatMod >>> 1
//
heatProduced = moveDefTable.GetInt("heatProduced", GAME_SPEED * 2);
// <maxSlope> ranges from 0.0 to 60 * 1.5 degrees, ie. from 0.0 to
// 0.5 * PI radians, ie. from 1.0 - cos(0.0) to 1.0 - cos(0.5 * PI)
// = [0, 1] --> DEFAULT <slopeMod> values range from (4 / 0.001) to
// (4 / 1.001) = [4000.0, 3.996]
//
// speedMod values for a terrain-square slope in [0, 1] are given by
// (1.0 / (1.0 + slope * slopeMod)) and therefore have a MAXIMUM at
// <slope=0, slopeMod=...> and a MINIMUM at <slope=1, slopeMod=4000>
// (of 1.0 / (1.0 + 0.0 * ...) = 1.0 and 1.0 / (1.0 + 1.0 * 4000.0)
// = 0.00025 respectively)
//
slopeMod = moveDefTable.GetFloat("slopeMod", 4.0f / (maxSlope + 0.001f));
// ground units hug the ocean floor when in water,
// ships stay at a "fixed" level (their waterline)
followGround = (speedModClass == MoveDef::Tank || speedModClass == MoveDef::KBot);
// TODO:
// remove terrainClass, not used anywhere
// and only AI's MIGHT have benefit from it
//
// tank or bot that cannot get its threads / feet
// wet, or hovercraft (which doesn't touch ground
// or water)
if ((followGround && maxWaterDepth <= 0.0f) || speedModClass == MoveDef::Hover)
terrainClass = MoveDef::Land;
// ship (or sub) that cannot crawl onto shore, OR tank
// or bot restricted to snorkling (strange but possible)
if ((speedModClass == MoveDef::Ship && minWaterDepth > 0.0f) || (followGround && minWaterDepth > 0.0f))
terrainClass = MoveDef::Water;
// tank or kbot that CAN go skinny-dipping (amph.),
// or ship that CAN sprout legs when at the beach
if ((followGround && maxWaterDepth > 0.0f) || (speedModClass == MoveDef::Ship && minWaterDepth < 0.0f))
terrainClass = MoveDef::Mixed;
const int xsizeDef = std::max(1, moveDefTable.GetInt("footprintX", 1));
const int zsizeDef = std::max(1, moveDefTable.GetInt("footprintZ", xsizeDef));
// make all mobile footprints point-symmetric in heightmap space
// (meaning that only non-even dimensions are possible and each
// footprint always has a unique center square)
xsize = xsizeDef * SPRING_FOOTPRINT_SCALE;
zsize = zsizeDef * SPRING_FOOTPRINT_SCALE;
xsize -= ((xsize & 1)? 0: 1);
zsize -= ((zsize & 1)? 0: 1);
// precalculated data for MoveMath
xsizeh = xsize >> 1;
zsizeh = zsize >> 1;
assert((xsize & 1) == 1);
assert((zsize & 1) == 1);
}
bool MoveDef::TestMoveSquare(
const CSolidObject* collider,
const int xTestMoveSqr,
const int zTestMoveSqr,
const float3 testMoveDir,
bool testTerrain,
bool testObjects,
bool centerOnly,
float* minSpeedModPtr,
int* maxBlockBitPtr
) const {
bool retTestMove = true;
assert(testTerrain || testObjects);
float minSpeedMod = std::numeric_limits<float>::max();;
CMoveMath::BlockType maxBlockBit = CMoveMath::BLOCK_NONE;
const int zMin = -zsizeh * (1 - centerOnly), zMax = zsizeh * (1 - centerOnly);
const int xMin = -xsizeh * (1 - centerOnly), xMax = xsizeh * (1 - centerOnly);
float3 testMoveDir2D = testMoveDir;
testMoveDir2D.SafeNormalize2D();
for (int z = zMin; (z <= zMax) && retTestMove; z++) {
for (int x = xMin; (x <= xMax) && retTestMove; x++) {
const float speedMod = CMoveMath::GetPosSpeedMod(*this, xTestMoveSqr + x, zTestMoveSqr + z, testMoveDir2D);
minSpeedMod = std::min(minSpeedMod, speedMod);
retTestMove &= (!testTerrain || (speedMod > 0.0f));
}
}
// GetPosSpeedMod only checks *one* square of terrain
// (heightmap/slopemap/typemap), not the blocking-map
if (retTestMove) {
const CMoveMath::BlockType blockBits = CMoveMath::RangeIsBlocked(*this, xTestMoveSqr + xMin, xTestMoveSqr + xMax, zTestMoveSqr + zMin, zTestMoveSqr + zMax, collider);
maxBlockBit |= blockBits;
retTestMove &= (!testObjects || (blockBits & CMoveMath::BLOCK_STRUCTURE) == 0);
}
// don't use std::min or |= because the values might be garbage
if (minSpeedModPtr != nullptr) *minSpeedModPtr = minSpeedMod;
if (maxBlockBitPtr != nullptr) *maxBlockBitPtr = maxBlockBit;
return retTestMove;
}
bool MoveDef::TestMoveSquare(
const CSolidObject* collider,
const float3 testMovePos,
const float3 testMoveDir,
bool testTerrain,
bool testObjects,
bool centerOnly,
float* minSpeedMod,
int* maxBlockBit
) const {
const int xTestMoveSqr = testMovePos.x / SQUARE_SIZE;
const int zTestMoveSqr = testMovePos.z / SQUARE_SIZE;
return (TestMoveSquare(collider, xTestMoveSqr, zTestMoveSqr, testMoveDir, testTerrain, testObjects, centerOnly, minSpeedMod, maxBlockBit));
}
float MoveDef::GetDepthMod(const float height) const {
// [DEPTHMOD_{MIN, MAX}_HEIGHT] are always >= 0,
// so we return early for positive height values
// only negative heights ("depths") are allowed
if (height > -depthModParams[DEPTHMOD_MIN_HEIGHT]) { return 1.0f; }
if (height < -depthModParams[DEPTHMOD_MAX_HEIGHT]) { return 0.0f; }
const float a = depthModParams[DEPTHMOD_QUA_COEFF];
const float b = depthModParams[DEPTHMOD_LIN_COEFF];
const float c = depthModParams[DEPTHMOD_CON_COEFF];
const float minScale = 0.01f;
const float maxScale = depthModParams[DEPTHMOD_MAX_SCALE];
const float depth = -height;
const float scale = Clamp((a * depth * depth + b * depth + c), minScale, maxScale);
// NOTE:
// <maxScale> is guaranteed to be >= 0.01, so the
// depth-mod range is [1.0 / 0.01, 1.0 / +infinity]
//
// if minScale <= scale < 1.0, speedup
// if 1.0 < scale <= maxScale, slowdown
return (1.0f / scale);
}
unsigned int MoveDef::GetCheckSum() const {
unsigned int sum = 0;
const unsigned char* minByte = reinterpret_cast<const unsigned char*>(&speedModClass);
const unsigned char* maxByte = reinterpret_cast<const unsigned char*>(&flowMapping) + sizeof(flowMapping);
assert(minByte < maxByte);
// NOTE:
// safe so long as MoveDef has no virtuals and we
// make sure we do not checksum any padding bytes
for (const unsigned char* byte = minByte; byte != maxByte; byte++) {
sum ^= ((((byte + 1) - minByte) << 8) * (*byte));
}
return sum;
}