Skip to content
This repository

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Octocat-spinner-32-eaf2f5

Cannot retrieve contributors at this time

file 1086 lines (887 sloc) 32.837 kb
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085
/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */

#include <iostream>
#include <stdexcept>
#include <cassert>
#include <boost/cstdint.hpp>

#include "ExplosionGenerator.h"
#include "ExpGenSpawner.h" //!!
#include "Game/Camera.h"
#include "Game/GlobalUnsynced.h"
#include "Lua/LuaParser.h"
#include "Map/Ground.h"
#include "Rendering/GroundFlash.h"
#include "Rendering/ProjectileDrawer.h"
#include "Rendering/Textures/ColorMap.h"
#include "Rendering/Textures/TextureAtlas.h"
#include "Sim/Projectiles/ProjectileHandler.h"
#include "Sim/Projectiles/Unsynced/BubbleProjectile.h"
#include "Sim/Projectiles/Unsynced/DirtProjectile.h"
#include "Sim/Projectiles/Unsynced/ExploSpikeProjectile.h"
#include "Sim/Projectiles/Unsynced/HeatCloudProjectile.h"
#include "Sim/Projectiles/Unsynced/SmokeProjectile2.h"
#include "Sim/Projectiles/Unsynced/SpherePartProjectile.h"
#include "Sim/Projectiles/Unsynced/WakeProjectile.h"
#include "Sim/Projectiles/Unsynced/WreckProjectile.h"

#include "System/creg/STL_Map.h"
#include "System/Config/ConfigHandler.h"
#include "System/FileSystem/FileSystemInitializer.h"
#include "System/Log/DefaultFilter.h"
#include "System/Log/ILog.h"
#include "System/Exceptions.h"
#include "System/creg/VarTypes.h"
#include "System/FileSystem/ArchiveScanner.h"
#include "System/FileSystem/FileHandler.h"
#include "System/FileSystem/VFSHandler.h"
#include "System/Util.h"


CR_BIND_DERIVED_INTERFACE(CExpGenSpawnable, CWorldObject);
CR_REG_METADATA(CExpGenSpawnable, );

CR_BIND_INTERFACE(IExplosionGenerator);
CR_REG_METADATA(IExplosionGenerator, (
CR_MEMBER(generatorID)
));

CR_BIND_DERIVED(CStdExplosionGenerator, IExplosionGenerator, );

CR_BIND(CCustomExplosionGenerator::ProjectileSpawnInfo, )
CR_REG_METADATA_SUB(CCustomExplosionGenerator, ProjectileSpawnInfo, (
//CR_MEMBER(projectileClass), FIXME is pointer
CR_MEMBER(code),
CR_MEMBER(count),
CR_MEMBER(flags)
));

CR_BIND(CCustomExplosionGenerator::GroundFlashInfo, )
CR_REG_METADATA_SUB(CCustomExplosionGenerator, GroundFlashInfo, (
CR_MEMBER(flashSize),
CR_MEMBER(flashAlpha),
CR_MEMBER(circleGrowth),
CR_MEMBER(circleAlpha),
CR_MEMBER(ttl),
CR_MEMBER(flags),
CR_MEMBER(color)
));

CR_BIND(CCustomExplosionGenerator::ExpGenParams, )
CR_REG_METADATA_SUB(CCustomExplosionGenerator, ExpGenParams, (
CR_MEMBER(projectiles),
CR_MEMBER(groundFlash),
CR_MEMBER(useDefaultExplosions)
));

CR_BIND_DERIVED(CCustomExplosionGenerator, CStdExplosionGenerator, );
CR_REG_METADATA(CCustomExplosionGenerator, (
CR_MEMBER(expGenParams)
));


CExplosionGeneratorHandler* explGenHandler = NULL;

CExpGenSpawnable::CExpGenSpawnable(): CWorldObject() {}
CExpGenSpawnable::CExpGenSpawnable(const float3& pos, const float3& spd): CWorldObject(pos, spd) {}



unsigned int CCustomExplosionGenerator::GetFlagsFromTable(const LuaTable& table)
{
unsigned int flags = 0;

if (table.GetBool("ground", false)) { flags |= CCustomExplosionGenerator::SPW_GROUND; }
if (table.GetBool("water", false)) { flags |= CCustomExplosionGenerator::SPW_WATER; }
if (table.GetBool("air", false)) { flags |= CCustomExplosionGenerator::SPW_AIR; }
if (table.GetBool("underwater", false)) { flags |= CCustomExplosionGenerator::SPW_UNDERWATER; }
if (table.GetBool("unit", false)) { flags |= CCustomExplosionGenerator::SPW_UNIT; }
if (table.GetBool("nounit", false)) { flags |= CCustomExplosionGenerator::SPW_NO_UNIT; }

return flags;
}

unsigned int CCustomExplosionGenerator::GetFlagsFromHeight(float height, float altitude)
{
unsigned int flags = 0;

// note: ranges do not overlap, although code in
// *ExplosionGenerator::Explosion assumes they can
if (height > 0.0f && altitude >= 20.0f) { flags |= CCustomExplosionGenerator::SPW_AIR; }
else if (height > 0.0f && altitude >= -1.0f) { flags |= CCustomExplosionGenerator::SPW_GROUND; }
else if (height > -5.0f && altitude >= -1.0f) { flags |= CCustomExplosionGenerator::SPW_WATER; }
else if (height <= -5.0f && altitude >= -1.0f) { flags |= CCustomExplosionGenerator::SPW_UNDERWATER; }

return flags;
}



void ClassAliasList::Load(const LuaTable& aliasTable)
{
map<string, string> aliasList;
aliasTable.GetMap(aliasList);
aliases.insert(aliasList.begin(), aliasList.end());
}

creg::Class* ClassAliasList::GetClass(const string& name) const
{
string n = name;

for (;;) {
map<string, string>::const_iterator i = aliases.find(n);
if (i == aliases.end()) {
break;
}
n = i->second;
}

creg::Class* cls = creg::System::GetClass(n);

if (cls == NULL) {
LOG_L(L_WARNING, "[%s] name \"%s\" does not match any ExplosionGenerator class (forgot the \"%s\" prefix?)", __FUNCTION__, name.c_str(), CEG_PREFIX_STRING);
}

return cls;
}

string ClassAliasList::FindAlias(const string& className) const
{
for (map<string, string>::const_iterator i = aliases.begin(); i != aliases.end(); ++i) {
if (i->second == className) {
return i->first;
}
}

return className;
}






CExplosionGeneratorHandler::CExplosionGeneratorHandler()
{
explosionGenerators.reserve(32);
explosionGenerators.push_back(new CStdExplosionGenerator()); // id=0
explosionGenerators[0]->SetGeneratorID(EXPGEN_ID_STANDARD);

exploParser = NULL;
aliasParser = NULL;
explTblRoot = NULL;

ParseExplosionTables();
}

CExplosionGeneratorHandler::~CExplosionGeneratorHandler()
{
delete exploParser; exploParser = NULL;
delete aliasParser; aliasParser = NULL;
delete explTblRoot; explTblRoot = NULL;

delete explosionGenerators[0];

for (unsigned int n = 1; n < explosionGenerators.size(); n++) {
creg::Class* cls = explosionGenerators[n]->GetClass();
cls->DeleteInstance(explosionGenerators[n]);
}

explosionGenerators.clear();

expGenTagIdentMap.clear();
expGenIdentTagMap.clear();
}

void CExplosionGeneratorHandler::ParseExplosionTables() {
delete exploParser;
delete aliasParser;
delete explTblRoot;

exploParser = new LuaParser("gamedata/explosions.lua", SPRING_VFS_MOD_BASE, SPRING_VFS_ZIP);
aliasParser = new LuaParser("gamedata/explosion_alias.lua", SPRING_VFS_MOD_BASE, SPRING_VFS_ZIP);
explTblRoot = NULL;

if (!aliasParser->Execute()) {
LOG_L(L_ERROR, "Failed to parse explosion aliases: %s",
aliasParser->GetErrorLog().c_str());
} else {
const LuaTable& aliasRoot = aliasParser->GetRoot();

projectileClasses.Clear();
projectileClasses.Load(aliasRoot.SubTable("projectiles"));
generatorClasses.Clear();
generatorClasses.Load(aliasRoot.SubTable("generators"));
}

if (!exploParser->Execute()) {
LOG_L(L_ERROR, "Failed to parse explosions: %s", exploParser->GetErrorLog().c_str());
} else {
explTblRoot = new LuaTable(exploParser->GetRoot());
}
}

void CExplosionGeneratorHandler::ReloadGenerators(const std::string& tag) {
// re-parse the projectile and generator tables
ParseExplosionTables();

const char* preFmt = "[%s][generatorID=%u] reloading CEG \"%s\"";
const char* pstFmt = "[%s][generatorID=%u] failed to reload CEG \"%s\"";

// NOTE:
// maps store tags inclusive of CEG_PREFIX_STRING
// but the Lua subtables that define each CEG are
// only indexed by tag postfix
if (tag.empty()) {
for (unsigned int n = 1; n < explosionGenerators.size(); n++) {
IExplosionGenerator* eg = explosionGenerators[n];

// standard EG's (empty postfix) do not need to be reloaded
if (expGenIdentTagMap.find(n) == expGenIdentTagMap.end())
continue;

assert(eg->GetGeneratorID() == n);
LOG(preFmt, __FUNCTION__, n, expGenIdentTagMap[n].c_str());

if (!eg->Reload(this, expGenIdentTagMap[n].substr(7))) {
LOG_L(L_WARNING, pstFmt, __FUNCTION__, n, expGenIdentTagMap[n].c_str());
}
}
} else {
const TagIdentMapConstIt it = expGenTagIdentMap.find(tag);

if (it == expGenTagIdentMap.end()) {
LOG_L(L_WARNING, "[%s] no CEG named \"%s\" (forgot the \"%s\" prefix?)", __FUNCTION__, tag.c_str(), CEG_PREFIX_STRING);
return;
}

assert(explosionGenerators[it->second]->GetGeneratorID() == it->second);
LOG(preFmt, __FUNCTION__, it->second, tag.c_str());

if (!explosionGenerators[it->second]->Reload(this, tag.substr(7))) {
LOG_L(L_WARNING, pstFmt, __FUNCTION__, it->second, tag.c_str());
}
}
}



unsigned int CExplosionGeneratorHandler::LoadGeneratorID(const std::string& tag)
{
IExplosionGenerator* eg = LoadGenerator(tag);

if (eg == NULL)
return EXPGEN_ID_INVALID;

return (eg->GetGeneratorID());
}

// creates either a standard or a custom explosion generator instance
// NOTE:
// can be called recursively for custom instances (LoadGenerator ->
// Load -> ParseExplosionCode -> LoadGenerator -> ...), generators
// must NOT be overwritten
IExplosionGenerator* CExplosionGeneratorHandler::LoadGenerator(const string& tag)
{
const TagIdentMapConstIt it = expGenTagIdentMap.find(tag);

if (it != expGenTagIdentMap.end())
return explosionGenerators[it->second];

// tag is either "CStdExplosionGenerator" (or some sub-string, eg.
// "std") which maps to CStdExplosionGenerator or "custom:postfix"
// which maps to CCustomExplosionGenerator, all others cause NULL
// to be returned
string prefix;
string postfix;

const string::size_type seppos = tag.find(':');

if (seppos != string::npos) {
// grab the "custom" prefix (the only supported value)
prefix = tag.substr(0, seppos);
postfix = tag.substr(seppos + 1);
assert((prefix + ":") == CEG_PREFIX_STRING);
} else {
prefix = tag;
}

creg::Class* cls = generatorClasses.GetClass(prefix);

if (cls == NULL)
return NULL;

if (!cls->IsSubclassOf(IExplosionGenerator::StaticClass()))
throw content_error(prefix + " is not a subclass of IExplosionGenerator");

IExplosionGenerator* explGen = static_cast<IExplosionGenerator*>(cls->CreateInstance());
explGen->SetGeneratorID(explosionGenerators.size());

// can still be a standard generator, but with non-zero ID
assert(explGen->GetGeneratorID() != EXPGEN_ID_STANDARD);

// save generator so ID is valid *before* possible recursion
explosionGenerators.push_back(explGen);

if (!postfix.empty()) {
// standard EG's have no postfix (nor always a prefix)
// custom EG's always have CEG_PREFIX_STRING in front
expGenTagIdentMap[tag] = explGen->GetGeneratorID();
expGenIdentTagMap[explGen->GetGeneratorID()] = tag;

explGen->Load(this, postfix);
}

return explGen;
}

IExplosionGenerator* CExplosionGeneratorHandler::GetGenerator(unsigned int expGenID)
{
if (expGenID == EXPGEN_ID_INVALID)
return NULL;
if (expGenID >= explosionGenerators.size())
return NULL;

return explosionGenerators[expGenID];
}

bool CExplosionGeneratorHandler::GenExplosion(
unsigned int expGenID,
const float3& pos,
const float3& dir,
float damage,
float radius,
float gfxMod,
CUnit* owner,
CUnit* hit
) {
bool ret = false;

if (expGenID == EXPGEN_ID_INVALID)
return ret;

assert(expGenID < explosionGenerators.size());

if (expGenID == EXPGEN_ID_STANDARD) {
ret = explosionGenerators[EXPGEN_ID_STANDARD]->Explosion(pos, dir, damage, radius, gfxMod, owner, hit);
} else {
ret = explosionGenerators[expGenID]->Explosion(pos, dir, damage, radius, gfxMod, owner, hit);
}

return ret;
}



bool CStdExplosionGenerator::Explosion(
const float3& pos,
const float3& dir,
float damage,
float radius,
float gfxMod,
CUnit* owner,
CUnit* hit
) {
const float groundHeight = ground->GetHeightReal(pos.x, pos.z);
const float altitude = pos.y - groundHeight;

float3 camVect = camera->GetPos() - pos;

const unsigned int flags = CCustomExplosionGenerator::GetFlagsFromHeight(pos.y, altitude);
const bool airExplosion = ((flags & CCustomExplosionGenerator::SPW_AIR ) != 0);
const bool groundExplosion = ((flags & CCustomExplosionGenerator::SPW_GROUND ) != 0);
const bool waterExplosion = ((flags & CCustomExplosionGenerator::SPW_WATER ) != 0);
const bool uwExplosion = ((flags & CCustomExplosionGenerator::SPW_UNDERWATER) != 0);

// limit the visual effects based on the radius
damage /= 20.0f;
damage = std::min(damage, radius * 1.5f);
damage *= gfxMod;
damage = std::max(damage, 0.0f);

const float sqrtDmg = math::sqrt(damage);
const float camLength = camVect.Length();
float moveLength = radius * 0.03f;

if (camLength > 0.0f) { camVect /= camLength; }
if (camLength < moveLength + 2) { moveLength = camLength - 2; }

const float3 npos = pos + camVect * moveLength;

new CHeatCloudProjectile(owner, npos, float3(0.0f, 0.3f, 0.0f), 8.0f + sqrtDmg * 0.5f, 7 + damage * 2.8f);

if (projectileHandler->particleSaturation < 1.0f) {
// turn off lots of graphic only particles when we have more particles than we want
float smokeDamage = damage;
float smokeDamageSQRT = 0.0f;
float smokeDamageISQRT = 0.0f;

if (uwExplosion) { smokeDamage *= 0.3f; }
if (airExplosion || waterExplosion) { smokeDamage *= 0.6f; }

if (smokeDamage > 0.01f) {
smokeDamageSQRT = math::sqrt(smokeDamage);
smokeDamageISQRT = 1.0f / (smokeDamageSQRT * 0.35f);
}

for (int a = 0; a < smokeDamage * 0.6f; ++a) {
const float3 speed(
(-0.1f + gu->RandFloat() * 0.2f),
( 0.1f + gu->RandFloat() * 0.3f) * smokeDamageISQRT,
(-0.1f + gu->RandFloat() * 0.2f)
);

const float h = ground->GetApproximateHeight(npos.x, npos.z);
const float time = (40.0f + smokeDamageSQRT * 15.0f) * (0.8f + gu->RandFloat() * 0.7f);

float3 npos = pos + gu->RandVector() * smokeDamage;
npos.y = std::max(npos.y, h);

new CSmokeProjectile2(owner, pos, npos, speed, time, smokeDamageSQRT * 4.0f, 0.4f, 0.6f);
}

if (groundExplosion) {
const int numDirt = std::min(20.0f, damage * 0.8f);
const float explSpeedMod = 0.7f + std::min(30.0f, damage) / GAME_SPEED;
const float3 color(0.15f, 0.1f, 0.05f);

for (int a = 0; a < numDirt; ++a) {
const float3 explSpeed = float3(
(0.5f - gu->RandFloat()) * 1.5f,
1.7f + gu->RandFloat() * 1.6f,
(0.5f - gu->RandFloat()) * 1.5f
);

const float3 npos(
pos.x - (0.5f - gu->RandFloat()) * (radius * 0.6f),
pos.y - 2.0f - damage * 0.2f,
pos.z - (0.5f - gu->RandFloat()) * (radius * 0.6f)
);

new CDirtProjectile(owner, npos, explSpeed * explSpeedMod, 90.0f + damage * 2.0f, 2.0f + sqrtDmg * 1.5f, 0.4f, 0.999f, color);
}
}

if (!airExplosion && !uwExplosion && waterExplosion) {
const int numDirt = std::min(40.f, damage * 0.8f);
const float3 color(1.0f, 1.0f, 1.0f);

for (int a = 0; a < numDirt; ++a) {
const float3 speed(
( 0.5f - gu->RandFloat()) * 0.2f,
(a * 0.1f + gu->RandFloat() * 0.8f),
( 0.5f - gu->RandFloat()) * 0.2f
);
const float3 npos(
pos.x - (0.5f - gu->RandFloat()) * (radius * 0.2f),
pos.y - 2.0f - sqrtDmg * 2.0f,
pos.z - (0.5f - gu->RandFloat()) * (radius * 0.2f)
);

new CDirtProjectile(
owner,
npos,
speed * (0.7f + std::min(30.0f, damage) / GAME_SPEED),
90.0f + damage * 2.0f,
2.0f + sqrtDmg * 2.0f,
0.3f,
0.99f,
color
);
}
}
if (damage >= 20.0f && !uwExplosion && !airExplosion) {
const int numDebris = (gu->RandInt() % 6) + 3 + int(damage * 0.04f);
const float explSpeedMod = (0.7f + std::min(30.0f, damage) / 23);

for (int a = 0; a < numDebris; ++a) {
const float3 explSpeed = (altitude < 4.0f)?
float3((0.5f - gu->RandFloat()) * 2.0f, 1.8f + gu->RandFloat() * 1.8f, (0.5f - gu->RandFloat()) * 2.0f):
float3(gu->RandVector() * 2);

const float3 npos(
pos.x - (0.5f - gu->RandFloat()) * (radius * 1),
pos.y,
pos.z - (0.5f - gu->RandFloat()) * (radius * 1)
);

new CWreckProjectile(owner, npos, explSpeed * explSpeedMod, 90.0f + damage * 2.0f);
}
}
if (uwExplosion) {
const int numBubbles = (damage * 0.7f);

for (int a = 0; a < numBubbles; ++a) {
new CBubbleProjectile(
owner,
pos + gu->RandVector() * radius * 0.5f,
gu->RandVector() * 0.2f + float3(0.0f, 0.2f, 0.0f),
damage * 2.0f + gu->RandFloat() * damage,
1.0f + gu->RandFloat() * 2.0f,
0.02f,
0.5f + gu->RandFloat() * 0.3f
);
}
}
if (waterExplosion && !uwExplosion && !airExplosion) {
const int numWake = (damage * 0.5f);

for (int a = 0; a < numWake; ++a) {
new CWakeProjectile(
owner,
pos + gu->RandVector() * radius * 0.2f,
gu->RandVector() * radius * 0.003f,
sqrtDmg * 4.0f,
damage * 0.03f,
0.3f + gu->RandFloat() * 0.2f,
0.8f / (sqrtDmg * 3 + 50 + gu->RandFloat() * 90.0f),
1
);
}
}
if (radius > 10.0f && damage > 4.0f) {
const int numSpike = int(sqrtDmg) + 8;
const float explSpeedMod = (8 + damage * 3.0f) / (9 + sqrtDmg * 0.7f) * 0.35f;

for (int a = 0; a < numSpike; ++a) {
float3 explSpeed = (gu->RandVector()).SafeNormalize() * explSpeedMod;

if (!airExplosion && !waterExplosion && (explSpeed.y < 0.0f)) {
explSpeed.y = -explSpeed.y;
}

new CExploSpikeProjectile(
owner,
pos + explSpeed,
explSpeed * (0.9f + gu->RandFloat() * 0.4f),
radius * 0.1f,
radius * 0.1f,
0.6f,
0.8f / (8.0f + sqrtDmg)
);
}
}
}

if (radius > 20.0f && damage > 6.0f && altitude < (radius * 0.7f)) {
const float flashSize = std::max(radius, damage * 2);
const float ttl = 8 + sqrtDmg * 0.8f;

if (flashSize > 5.f && ttl > 15.f) {
const float flashAlpha = std::min(0.8f, damage * 0.01f);

float circleAlpha = 0;
float circleGrowth = 0;

if (radius > 40.0f && damage > 12.0f) {
circleAlpha = std::min(0.5f, damage * 0.01f);
circleGrowth = (8.0f + damage * 2.5f) / (9.0f + sqrtDmg * 0.7f) * 0.55f;
}

new CStandardGroundFlash(pos, circleAlpha, flashAlpha, flashSize, circleGrowth, ttl);
}
}

if (radius > 40.0f && damage > 12.0f) {
CSpherePartProjectile::CreateSphere(
pos,
std::min(0.7f, damage * 0.02f),
5.0f + int(sqrtDmg * 0.7f),
(8.0f + damage * 2.5f) / (9.0f + sqrtDmg * 0.7f) * 0.5f,
owner
);
}

return true;
}



void CCustomExplosionGenerator::ExecuteExplosionCode(const char* code, float damage, char* instance, int spawnIndex, const float3& dir)
{
float val = 0.0f;
void* ptr = NULL;
float buffer[16];

for (;;) {
switch (*(code++)) {
case OP_END: {
return;
}
case OP_STOREI: {
boost::uint16_t offset = *(boost::uint16_t*) code;
code += 2;
*(int*) (instance + offset) = (int) val;
val = 0.0f;
break;
}
case OP_STOREF: {
boost::uint16_t offset = *(boost::uint16_t*) code;
code += 2;
*(float*) (instance + offset) = val;
val = 0.0f;
break;
}
case OP_STOREC: {
boost::uint16_t offset = *(boost::uint16_t*) code;
code += 2;
*(unsigned char*) (instance + offset) = (int) val;
val = 0.0f;
break;
}
case OP_ADD: {
val += *(float*) code;
code += 4;
break;
}
case OP_RAND: {
val += gu->RandFloat() * (*(float*) code);
code += 4;
break;
}
case OP_DAMAGE: {
val += damage * (*(float*) code);
code += 4;
break;
}
case OP_INDEX: {
val += spawnIndex * (*(float*) code);
code += 4;
break;
}
case OP_LOADP: {
ptr = *(void**) code;
code += sizeof(void*);
break;
}
case OP_STOREP: {
boost::uint16_t offset = *(boost::uint16_t*) code;
code += 2;
*(void**) (instance + offset) = ptr;
ptr = NULL;
break;
}
case OP_DIR: {
boost::uint16_t offset = *(boost::uint16_t*) code;
code += 2;
*reinterpret_cast<float3*>(instance + offset) = dir;
break;
}
case OP_SAWTOOTH: {
// this translates to modulo except it works with floats
val -= (*(float*) code) * math::floor(val / (*(float*) code));
code += 4;
break;
}
case OP_DISCRETE: {
val = (*(float*) code) * math::floor(SafeDivide(val, (*(float*) code)));
code += 4;
break;
}
case OP_SINE: {
val = (*(float*) code) * math::sin(val);
code += 4;
break;
}
case OP_YANK: {
buffer[(*(int*) code)] = val;
val = 0;
code += 4;
break;
}
case OP_MULTIPLY: {
val *= buffer[(*(int*) code)];
code += 4;
break;
}
case OP_ADDBUFF: {
val += buffer[(*(int*) code)];
code += 4;
break;
}
case OP_POW: {
val = math::pow(val, (*(float*) code));
code += 4;
break;
}
case OP_POWBUFF: {
val = math::pow(val, buffer[(*(int*) code)]);
code += 4;
break;
}
default: {
assert(false);
break;
}
}
}
}



void CCustomExplosionGenerator::ParseExplosionCode(
CCustomExplosionGenerator::ProjectileSpawnInfo* psi,
const int offset,
const boost::shared_ptr<creg::IType> type,
const string& script,
string& code)
{
string::size_type end = script.find(';', 0);
string vastr = script.substr(0, end);

if (vastr == "dir") { // first see if we can match any keywords
// if the user uses a keyword assume he knows that it is put on the right datatype for now
code += OP_DIR;
boost::uint16_t ofs = offset;
code.append((char*) &ofs, (char*) &ofs + 2);
}
else if (dynamic_cast<creg::BasicType*>(type.get())) {
const creg::BasicType* basicType = (creg::BasicType*) type.get();
const bool legalType =
(basicType->id == creg::crInt ) ||
(basicType->id == creg::crFloat) ||
(basicType->id == creg::crUChar) ||
(basicType->id == creg::crBool );

if (!legalType) {
throw content_error("[CCEG::ParseExplosionCode] projectile type-properties other than int, float, uchar, or bool are not supported (" + script + ")");
}

int p = 0;

while (p < script.length()) {
char opcode = OP_END;
char c = script[p++];

// consume whitespace
if (c == ' ')
continue;

bool useInt = false;

if (c == 'i') opcode = OP_INDEX;
else if (c == 'r') opcode = OP_RAND;
else if (c == 'd') opcode = OP_DAMAGE;
else if (c == 'm') opcode = OP_SAWTOOTH;
else if (c == 'k') opcode = OP_DISCRETE;
else if (c == 's') opcode = OP_SINE;
else if (c == 'p') opcode = OP_POW;
else if (c == 'y') { opcode = OP_YANK; useInt = true; }
else if (c == 'x') { opcode = OP_MULTIPLY; useInt = true; }
else if (c == 'a') { opcode = OP_ADDBUFF; useInt = true; }
else if (c == 'q') { opcode = OP_POWBUFF; useInt = true; }
else if (isdigit(c) || c == '.' || c == '-') { opcode = OP_ADD; p--; }
else {
const char* fmt = "[CCEG::ParseExplosionCode] unknown op-code \"%c\" in \"%s\" at index %d";
LOG_L(L_WARNING, fmt, c, script.c_str(), p);
continue;
}

// be sure to exit cleanly if there are no more operators or operands
if (p >= script.size())
continue;

char* endp = NULL;

if (!useInt) {
// strtod&co expect C-style strings with NULLs,
// c_str() is guaranteed to be NULL-terminated
// (whether .data() == .c_str() depends on the
// implementation of std::string)
const float v = (float)strtod(&script.c_str()[p], &endp);

p += (endp - &script.c_str()[p]);
code += opcode;
code.append((char*) &v, ((char*) &v) + 4);
} else {
const int v = std::max(0, std::min(16, (int)strtol(&script.c_str()[p], &endp, 10)));

p += (endp - &script.c_str()[p]);
code += opcode;
code.append((char*) &v, ((char*) &v) + 4);
}
}

switch (basicType->id) {
case creg::crInt: code.push_back(OP_STOREI); break;
case creg::crBool: code.push_back(OP_STOREI); break;
case creg::crFloat: code.push_back(OP_STOREF); break;
case creg::crUChar: code.push_back(OP_STOREC); break;
default: break;
}

boost::uint16_t ofs = offset;
code.append((char*)&ofs, (char*)&ofs + 2);
}
else if (dynamic_cast<creg::ObjectInstanceType*>(type.get())) {
creg::ObjectInstanceType *oit = (creg::ObjectInstanceType *)type.get();

string::size_type start = 0;
for (creg::Class* c = oit->objectClass; c; c=c->base) {
for (int a = 0; a < c->members.size(); a++) {
string::size_type end = script.find(',', start+1);
ParseExplosionCode(psi, offset + c->members [a]->offset, c->members[a]->type, script.substr(start,end-start), code);
start = end+1;
if (start >= script.length()) { break; }
}
if (start >= script.length()) { break; }
}
}
else if (dynamic_cast<creg::StaticArrayBaseType*>(type.get())) {
creg::StaticArrayBaseType *sat = (creg::StaticArrayBaseType*)type.get();

string::size_type start = 0;
for (unsigned int i=0; i < sat->size; i++) {
string::size_type end = script.find(',', start+1);
ParseExplosionCode(psi, offset + sat->elemSize * i, sat->elemType, script.substr(start, end-start), code);
start = end+1;
if (start >= script.length()) { break; }
}
}
else {
if (type->GetName() == "AtlasedTexture*") {
string::size_type end = script.find(';', 0);
string texname = script.substr(0, end);
// this memory is managed by textureAtlas (CTextureAtlas)
void* tex = &projectileDrawer->textureAtlas->GetTexture(texname);
code += OP_LOADP;
code.append((char*)(&tex), ((char*)(&tex)) + sizeof(void*));
code += OP_STOREP;
boost::uint16_t ofs = offset;
code.append((char*)&ofs, (char*)&ofs + 2);
} else if (type->GetName() == "GroundFXTexture*") {
string::size_type end = script.find(';', 0);
string texname = script.substr(0, end);
// this memory is managed by groundFXAtlas (CTextureAtlas)
void* tex = &projectileDrawer->groundFXAtlas->GetTexture(texname);
code += OP_LOADP;
code.append((char*)(&tex), ((char*)(&tex)) + sizeof(void*));
code += OP_STOREP;
boost::uint16_t ofs = offset;
code.append((char*)&ofs, (char*)&ofs + 2);
} else if (type->GetName() == "CColorMap*") {
string::size_type end = script.find(';', 0);
string colorstring = script.substr(0, end);
// gets stored and deleted at game end from inside CColorMap
void* colormap = CColorMap::LoadFromDefString(colorstring);
code += OP_LOADP;
code.append((char*)(&colormap), ((char*)(&colormap)) + sizeof(void*));
code += OP_STOREP;
boost::uint16_t ofs = offset;
code.append((char*)&ofs, (char*)&ofs + 2);
} else if (type->GetName() == "IExplosionGenerator*") {
string::size_type end = script.find(';', 0);
string name = script.substr(0, end);

// managed by CExplosionGeneratorHandler
IExplosionGenerator* explGen = explGenHandler->LoadGenerator(name);

void* explGenRaw = (void*) explGen;
code += OP_LOADP;
code.append((char*)(&explGenRaw), ((char*)(&explGenRaw)) + sizeof(void*));
code += OP_STOREP;
boost::uint16_t ofs = offset;
code.append((char*)&ofs, (char*)&ofs + 2);
}
}
}



bool CCustomExplosionGenerator::Load(CExplosionGeneratorHandler* handler, const string& tag)
{
const LuaTable* root = handler->GetExplosionTableRoot();
const LuaTable& expTable = (root != NULL)? root->SubTable(tag): LuaTable();

if (!expTable.IsValid()) {
// not a fatal error: any calls to Explosion will just return early
LOG_L(L_WARNING, "[CCEG::%s] table for CEG \"%s\" invalid (parse errors?)", __FUNCTION__, tag.c_str());
return false;
}

expGenParams.projectiles.clear();
expGenParams.groundFlash = GroundFlashInfo();

vector<string> spawns;
expTable.GetKeys(spawns);

for (unsigned int n = 0; n < spawns.size(); n++) {
ProjectileSpawnInfo psi;

const string& spawnName = spawns[n];
const LuaTable& spawnTable = expTable.SubTable(spawnName);

// NOTE:
// *every* CEG table contains a spawn called "filename"
// see springcontent/gamedata/explosions.lua::LoadTDFs
if (!spawnTable.IsValid())
continue;
if (spawnName == "groundflash" || spawnName == "filename")
continue;

const string& className = spawnTable.GetString("class", spawnName);

psi.projectileClass = (handler->GetProjectileClasses()).GetClass(className);
psi.flags = GetFlagsFromTable(spawnTable);
psi.count = std::max(0, spawnTable.GetInt("count", 1));

if (psi.projectileClass == NULL) {
LOG_L(L_WARNING, "[CCEG::%s] %s: Unknown class \"%s\"", __FUNCTION__, tag.c_str(), className.c_str());
continue;
}

if (psi.projectileClass->binder->flags & creg::CF_Synced) {
LOG_L(L_WARNING, "[CCEG::%s] %s: Tried to access synced class \"%s\"", __FUNCTION__, tag.c_str(), className.c_str());
continue;
}

string code;
map<string, string> props;
map<string, string>::const_iterator propIt;

spawnTable.SubTable("properties").GetMap(props);

for (propIt = props.begin(); propIt != props.end(); ++propIt) {
const creg::Class::Member* m = psi.projectileClass->FindMember(propIt->first.c_str());

if (m && (m->flags & creg::CM_Config)) {
ParseExplosionCode(&psi, m->offset, m->type, propIt->second, code);
} else {
LOG_L(L_WARNING, "[CCEG::%s] %s: Unknown tag %s::%s", __FUNCTION__, tag.c_str(), className.c_str(), propIt->first.c_str());
}
}

code += (char)OP_END;
psi.code.resize(code.size());
copy(code.begin(), code.end(), psi.code.begin());

expGenParams.projectiles.push_back(psi);
}

const LuaTable gndTable = expTable.SubTable("groundflash");
const int ttl = gndTable.GetInt("ttl", 0);

if (ttl > 0) {
expGenParams.groundFlash.circleAlpha = gndTable.GetFloat("circleAlpha", 0.0f);
expGenParams.groundFlash.flashSize = gndTable.GetFloat("flashSize", 0.0f);
expGenParams.groundFlash.flashAlpha = gndTable.GetFloat("flashAlpha", 0.0f);
expGenParams.groundFlash.circleGrowth = gndTable.GetFloat("circleGrowth", 0.0f);
expGenParams.groundFlash.color = gndTable.GetFloat3("color", float3(1.0f, 1.0f, 0.8f));

expGenParams.groundFlash.flags = SPW_GROUND | GetFlagsFromTable(gndTable);
expGenParams.groundFlash.ttl = ttl;
}

expGenParams.useDefaultExplosions = expTable.GetBool("useDefaultExplosions", false);
return true;
}

bool CCustomExplosionGenerator::Reload(CExplosionGeneratorHandler* handler, const std::string& tag) {
const ExpGenParams oldParams = expGenParams;

if (!Load(explGenHandler, tag)) {
expGenParams = oldParams;
return false;
}

return true;
}

bool CCustomExplosionGenerator::Explosion(
const float3& pos,
const float3& dir,
float damage,
float radius,
float gfxMod,
CUnit* owner,
CUnit* hit
) {
const float groundHeight = ground->GetHeightReal(pos.x, pos.z);
const float altitude = pos.y - groundHeight;

unsigned int flags = GetFlagsFromHeight(pos.y, altitude);
const bool groundExplosion = ((flags & CCustomExplosionGenerator::SPW_GROUND) != 0);

if (hit) flags |= SPW_UNIT;
else flags |= SPW_NO_UNIT;

const std::vector<ProjectileSpawnInfo>& spawnInfo = expGenParams.projectiles;
const GroundFlashInfo& groundFlash = expGenParams.groundFlash;

for (int a = 0; a < spawnInfo.size(); a++) {
const ProjectileSpawnInfo& psi = spawnInfo[a];

if ((psi.flags & flags) == 0)
continue;

// no new projectiles if we're saturated
if (projectileHandler->particleSaturation > 1.0f)
continue;

for (unsigned int c = 0; c < psi.count; c++) {
CExpGenSpawnable* projectile = static_cast<CExpGenSpawnable*>((psi.projectileClass)->CreateInstance());
ExecuteExplosionCode(&psi.code[0], damage, (char*) projectile, c, dir);
projectile->Init(owner, pos);
}
}

if (groundExplosion && (groundFlash.ttl > 0) && (groundFlash.flashSize > 1)) {
new CStandardGroundFlash(pos, groundFlash.circleAlpha, groundFlash.flashAlpha,
groundFlash.flashSize, groundFlash.circleGrowth, groundFlash.ttl, groundFlash.color);
}

if (expGenParams.useDefaultExplosions) {
return (explGenHandler->GenExplosion(CExplosionGeneratorHandler::EXPGEN_ID_STANDARD, pos, dir, damage, radius, gfxMod, owner, hit));
}

return true;
}


bool CCustomExplosionGenerator::OutputProjectileClassInfo()
{
LOG_DISABLE();
// we need to load basecontent for class aliases
FileSystemInitializer::Initialize();
vfsHandler->AddArchiveWithDeps(archiveScanner->ArchiveFromName("Spring content v1"), false);
LOG_ENABLE();

creg::System::InitializeClasses();
const vector<creg::Class*>& classes = creg::System::GetClasses();
CExplosionGeneratorHandler egh;

std::cout << "{" << std::endl;

for (vector<creg::Class*>::const_iterator ci = classes.begin(); ci != classes.end(); ++ci) {
creg::Class* c = *ci;

if (!c->IsSubclassOf(CExpGenSpawnable::StaticClass()) || c == CExpGenSpawnable::StaticClass())
continue;

if (c->binder->flags & creg::CF_Synced)
continue;

if (ci != classes.begin())
std::cout << "," << std::endl;

std::cout << " \"" << c->name << "\": {" << std::endl;
std::cout << " \"alias\": \"" << (egh.GetProjectileClasses()).FindAlias(c->name) << "\"";
for (; c; c = c->base) {
for (unsigned int a = 0; a < c->members.size(); a++) {
if (c->members[a]->flags & creg::CM_Config) {
std::cout << "," << std::endl;
std::cout << " \"" << c->members[a]->name << "\": \"" << c->members[a]->type->GetName() << "\"";
}
}
}

std::cout << std::endl << " }";
}
std::cout << std::endl << "}" << std::endl;

FileSystemInitializer::Cleanup();
return true;
}

Something went wrong with that request. Please try again.