src/battle/BattleState.cpp

   1 /*
   2  * BattleState.cpp
   3  *
   4  *  Created on: Aug 5, 2012
   5  *      Author: holy
   6  */
   7
   8 #include "BattleState.h"
   9
  10 #include "PartyLayout.h"
  11 #include "states/SelectMoveAction.h"
  12 #include "states/PerformAttacks.h"
  13 #include "../app/Application.h"
  14 #include "../app/Input.h"
  15 #include "../common/Ikari.h"
  16 #include "../common/Inventory.h"
  17 #include "../common/Item.h"
  18 #include "../common/Spell.h"
  19 #include "../geometry/operators.h"
  20 #include "../graphics/Frame.h"
  21 #include "../graphics/Sprite.h"
  22
  23 #include <algorithm>
  24 #include <stdexcept>
  25
  26 using app::Application;
  27 using app::Input;
  28 using common::Inventory;
  29 using common::Item;
  30 using common::Spell;
  31 using geometry::Point;
  32 using geometry::Vector;
  33 using graphics::Menu;
  34
  35 using std::vector;
  36
  37 namespace battle {
  38
  39 void BattleState::AddMonster(const Monster &m) {
  40         if (monsters.size() >= monstersLayout->NumPositions()) {
  41                 throw std::overflow_error("too many monsters for layout");
  42         }
  43         monsters.push_back(m);
  44 }
  45
  46 void BattleState::AddHero(const Hero &h) {
  47         if (numHeroes >= 4 || numHeroes >= (int)heroesLayout->NumPositions()) {
  48                 throw std::overflow_error("too many heroes for layout");
  49         }
  50         heroes[numHeroes] = h;
  51         ++numHeroes;
  52 }
  53
  54 void BattleState::NextHero() {
  55         ++activeHero;
  56         while (activeHero < numHeroes && heroes[activeHero].Health() == 0) {
  57                 ++activeHero;
  58         }
  59 }
  60
  61 void BattleState::SwapHeroes(int lhs, int rhs) {
  62         if (lhs < 0 || lhs >= numHeroes || rhs < 0 || rhs >= numHeroes || lhs == rhs) return;
  63         std::swap(heroes[lhs], heroes[rhs]);
  64 }
  65
  66
  67 void BattleState::Resize(int w, int h) {
  68
  69 }
  70
  71
  72 void BattleState::EnterState(Application &ctrl, SDL_Surface *screen) {
  73         monstersLayout->CalculatePositions(background->w, background->h, monsterPositions);
  74         heroesLayout->CalculatePositions(background->w, background->h, heroesPositions);
  75         for (int i(0); i < 4; ++i) {
  76                 spellMenus[i] = res->spellMenuPrototype;
  77                 LoadSpellMenu(i);
  78                 ikariMenus[i] = res->ikariMenuPrototype;
  79                 LoadIkariMenu(i);
  80                 heroTags[i] = HeroTag(this, i);
  81                 smallHeroTags[i] = SmallHeroTag(this, i);
  82         }
  83
  84         int tagHeight(attackTypeMenu.Height());
  85         int tagWidth(attackTypeMenu.Width() * 2 + attackTypeMenu.Width() / 2);
  86         int xOffset((Width() - 2 * tagWidth) / 2);
  87         heroTagPositions[0] = Point<int>(xOffset, Height() - 2 * tagHeight);
  88         heroTagPositions[1] = Point<int>(xOffset + tagWidth, Height() - 2 * tagHeight);
  89         heroTagPositions[2] = Point<int>(xOffset, Height() - tagHeight);
  90         heroTagPositions[3] = Point<int>(xOffset + tagWidth, Height() - tagHeight);
  91
  92         tagHeight = res->normalFont->CharHeight() * 4 + res->smallHeroTagFrame->BorderHeight() * 2;
  93         tagWidth = res->normalFont->CharWidth() * 6 + res->smallHeroTagFrame->BorderWidth() * 2;
  94         xOffset = (Width() - 4 * tagWidth) / 2;
  95         int yOffset(Height() - tagHeight);
  96         smallHeroTagPositions[0] = Point<int>(xOffset, yOffset);
  97         smallHeroTagPositions[1] = Point<int>(xOffset + 2 * tagWidth, yOffset);
  98         smallHeroTagPositions[2] = Point<int>(xOffset + tagWidth, yOffset);
  99         smallHeroTagPositions[3] = Point<int>(xOffset + 3 * tagWidth, yOffset);
 100
 101         itemMenu = res->itemMenuPrototype;
 102         LoadInventory();
 103 }
 104
 105 void BattleState::LoadSpellMenu(vector<Hero>::size_type index) {
 106         spellMenus[index].Clear();
 107         spellMenus[index].Reserve(HeroAt(index).Spells().size());
 108         for (vector<const Spell *>::const_iterator i(HeroAt(index).Spells().begin()), end(HeroAt(index).Spells().end()); i != end; ++i) {
 109                 bool enabled((*i)->CanUseInBattle() && (*i)->Cost() <= HeroAt(index).Mana());
 110                 spellMenus[index].Add((*i)->Name(), *i, enabled, 0, (*i)->Cost());
 111         }
 112 }
 113
 114 void BattleState::LoadIkariMenu(vector<Hero>::size_type index) {
 115         ikariMenus[index].Clear();
 116         ikariMenus[index].Reserve(6);
 117
 118         if (HeroAt(index).HasWeapon()) {
 119                 ikariMenus[index].Add(
 120                                 HeroAt(index).Weapon()->Name(),
 121                                 HeroAt(index).Weapon(),
 122                                 HeroAt(index).Weapon()->HasIkari() && HeroAt(index).Weapon()->GetIkari()->Cost() <= HeroAt(index).IP(),
 123                                 res->weaponMenuIcon,
 124                                 0,
 125                                 HeroAt(index).Weapon()->HasIkari() ? HeroAt(index).Weapon()->GetIkari()->Name() : "");
 126         } else {
 127                 ikariMenus[index].Add(res->noEquipmentText, 0, false, res->weaponMenuIcon);
 128         }
 129
 130         if (HeroAt(index).HasArmor()) {
 131                 ikariMenus[index].Add(
 132                                 HeroAt(index).Armor()->Name(),
 133                                 HeroAt(index).Armor(),
 134                                 HeroAt(index).Armor()->HasIkari() && HeroAt(index).Armor()->GetIkari()->Cost() <= HeroAt(index).IP(),
 135                                 res->armorMenuIcon,
 136                                 0,
 137                                 HeroAt(index).Armor()->HasIkari() ? HeroAt(index).Armor()->GetIkari()->Name() : "");
 138         } else {
 139                 ikariMenus[index].Add(res->noEquipmentText, 0, false, res->armorMenuIcon);
 140         }
 141
 142         if (HeroAt(index).HasShield()) {
 143                 ikariMenus[index].Add(
 144                                 HeroAt(index).Shield()->Name(),
 145                                 HeroAt(index).Shield(),
 146                                 HeroAt(index).Shield()->HasIkari() && HeroAt(index).Shield()->GetIkari()->Cost() <= HeroAt(index).IP(),
 147                                 res->shieldMenuIcon,
 148                                 0,
 149                                 HeroAt(index).Shield()->HasIkari() ? HeroAt(index).Shield()->GetIkari()->Name() : "");
 150         } else {
 151                 ikariMenus[index].Add(res->noEquipmentText, 0, false, res->shieldMenuIcon);
 152         }
 153
 154         if (HeroAt(index).HasHelmet()) {
 155                 ikariMenus[index].Add(
 156                                 HeroAt(index).Helmet()->Name(),
 157                                 HeroAt(index).Helmet(),
 158                                 HeroAt(index).Helmet()->HasIkari() && HeroAt(index).Helmet()->GetIkari()->Cost() <= HeroAt(index).IP(),
 159                                 res->helmetMenuIcon,
 160                                 0,
 161                                 HeroAt(index).Helmet()->HasIkari() ? HeroAt(index).Helmet()->GetIkari()->Name() : "");
 162         } else {
 163                 ikariMenus[index].Add(res->noEquipmentText, 0, false, res->helmetMenuIcon);
 164         }
 165
 166         if (HeroAt(index).HasRing()) {
 167                 ikariMenus[index].Add(
 168                                 HeroAt(index).Ring()->Name(),
 169                                 HeroAt(index).Ring(),
 170                                 HeroAt(index).Ring()->HasIkari() && HeroAt(index).Ring()->GetIkari()->Cost() <= HeroAt(index).IP(),
 171                                 res->ringMenuIcon,
 172                                 0,
 173                                 HeroAt(index).Ring()->HasIkari() ? HeroAt(index).Ring()->GetIkari()->Name() : "");
 174         } else {
 175                 ikariMenus[index].Add(res->noEquipmentText, 0, false, res->ringMenuIcon);
 176         }
 177
 178         if (HeroAt(index).HasJewel()) {
 179                 ikariMenus[index].Add(
 180                                 HeroAt(index).Jewel()->Name(),
 181                                 HeroAt(index).Jewel(),
 182                                 HeroAt(index).Jewel()->HasIkari() && HeroAt(index).Jewel()->GetIkari()->Cost() <= HeroAt(index).IP(),
 183                                 res->jewelMenuIcon,
 184                                 0,
 185                                 HeroAt(index).Jewel()->HasIkari() ? HeroAt(index).Jewel()->GetIkari()->Name() : "");
 186         } else {
 187                 ikariMenus[index].Add(res->noEquipmentText, 0, false, res->jewelMenuIcon);
 188         }
 189 }
 190
 191 void BattleState::LoadInventory() {
 192         const Inventory &inv(*res->inventory);
 193         itemMenu.Clear();
 194         itemMenu.Reserve(inv.MaxItems());
 195         for (int i(0); i < inv.MaxItems(); ++i) {
 196                 const Item *item(inv.ItemAt(i));
 197                 if (item) {
 198                         itemMenu.Add(item->Name(), item, item->CanUseInBattle(), item->MenuIcon(), inv.ItemCountAt(i));
 199                 } else {
 200                         itemMenu.AddEmptyEntry();
 201                 }
 202         }
 203         ClearAllAttacks();
 204 }
 205
 206 void BattleState::ExitState(Application &ctrl, SDL_Surface *screen) {
 207
 208 }
 209
 210 void BattleState::ResumeState(Application &ctrl, SDL_Surface *screen) {
 211         // TODO: check for victory or defeat
 212         if (ranAway) {
 213                 ctrl.PopState(); // quit the battle scene
 214                 return;
 215         }
 216         // TODO: this should not push a state while quitting
 217         if (AttackSelectionDone()) {
 218                 ctrl.PushState(new PerformAttacks(this));
 219         } else {
 220                 ctrl.PushState(new SelectMoveAction(this));
 221         }
 222 }
 223
 224 void BattleState::PauseState(Application &ctrl, SDL_Surface *screen) {
 225
 226 }
 227
 228
 229 class OrderCompare {
 230         public:
 231                 OrderCompare(BattleState *battle) : battle(battle) { }
 232                 bool operator ()(const BattleState::Order &lhs, const BattleState::Order &rhs) {
 233                         int lagl(lhs.isMonster ? battle->MonsterAt(lhs.index).Agility() : battle->HeroAt(lhs.index).Agility());
 234                         int ragl(rhs.isMonster ? battle->MonsterAt(rhs.index).Agility() : battle->HeroAt(rhs.index).Agility());
 235                         return lagl > ragl;
 236                 }
 237         private:
 238                 BattleState *battle;
 239 };
 240
 241 void BattleState::CalculateAttackOrder() {
 242         attackOrder.reserve(monsters.size() + NumHeroes());
 243         for (int i(0); i < numHeroes; ++i) {
 244                 attackOrder.push_back(Order(i, false));
 245         }
 246         for (vector<Monster>::size_type i(0), end(monsters.size()); i < end; ++i) {
 247                 attackOrder.push_back(Order(i, true));
 248         }
 249         std::sort(attackOrder.begin(), attackOrder.end(), OrderCompare(this));
 250
 251         monsterAttacks.resize(monsters.size(), AttackChoice(this));
 252 }
 253
 254 void BattleState::NextAttack() {
 255         ++attackCursor;
 256         while (attackCursor < int(attackOrder.size())) {
 257                 if (attackOrder[attackCursor].isMonster) {
 258                         if (MonsterAt(attackOrder[attackCursor].index).Health() > 0) break;
 259                 } else {
 260                         if (HeroAt(attackOrder[attackCursor].index).Health() > 0) break;
 261                 }
 262                 ++attackCursor;
 263         }
 264 }
 265
 266 void BattleState::CalculateDamage() {
 267         if (CurrentAttack().isMonster) {
 268                 // TODO: run monster's attack script
 269                 monsterAttacks[CurrentAttack().index].SetType(AttackChoice::SWORD);
 270                 monsterAttacks[CurrentAttack().index].Selection().SelectSingle();
 271                 monsterAttacks[CurrentAttack().index].Selection().SelectHeroes();
 272                 monsterAttacks[CurrentAttack().index].Selection().SetBad(0, 15);
 273         } else {
 274                 TargetSelection &ts(AttackChoiceAt(CurrentAttack().index).Selection());
 275                 if (ts.TargetsEnemies()) {
 276                         for (int i(0); i < MaxMonsters(); ++i) {
 277                                 if (ts.IsSelected(i) && MonsterAt(i).Health() > 0) {
 278                                         ts.SetBad(i, 15);
 279                                 }
 280                         }
 281                 } else {
 282                         for (int i(0); i < NumHeroes(); ++i) {
 283                                 if (ts.IsSelected(i) && HeroAt(i).Health() > 0) {
 284                                         ts.SetBad(i, 15);
 285                                 }
 286                         }
 287                 }
 288         }
 289 }
 290
 291 void BattleState::ApplyDamage() {
 292         if (attackCursor < 0) return;
 293         AttackChoice &ac(CurrentAttack().isMonster ? monsterAttacks[CurrentAttack().index] : AttackChoiceAt(CurrentAttack().index));
 294         TargetSelection &ts(ac.Selection());
 295         if (ts.TargetsEnemies()) {
 296                 for (int i(0); i < MaxMonsters(); ++i) {
 297                         if (ts.IsBad(i)) {
 298                                 MonsterAt(i).SubtractHealth(ts.GetAmount(i));
 299                         }
 300                 }
 301         } else {
 302                 for (int i(0); i < NumHeroes(); ++i) {
 303                         if (ts.IsSelected(i) && MonsterAt(i).Health() > 0) {
 304                                 HeroAt(i).SubtractHealth(ts.GetAmount(i));
 305                         }
 306                 }
 307         }
 308 }
 309
 310 void BattleState::ClearAllAttacks() {
 311         attackCursor = -1;
 312         activeHero = -1;
 313         for (int i(0); i < numHeroes; ++i) {
 314                 attackChoices[i] = AttackChoice(this);
 315         }
 316         attackOrder.clear();
 317         monsterAttacks.clear();
 318 }
 319
 320
 321 void BattleState::HandleEvents(const Input &input) {
 322
 323 }
 324
 325 void BattleState::UpdateWorld(float deltaT) {
 326
 327 }
 328
 329 void BattleState::Render(SDL_Surface *screen) {
 330         Vector<int> offset(CalculateScreenOffset(screen));
 331         RenderBackground(screen, offset);
 332         RenderMonsters(screen, offset);
 333 }
 334
 335 void BattleState::RenderBackground(SDL_Surface *screen, const Vector<int> &offset) {
 336         // black for now
 337         SDL_FillRect(screen, 0, SDL_MapRGB(screen->format, 0, 0, 0));
 338         SDL_Rect destRect;
 339         destRect.x = offset.X();
 340         destRect.y = offset.Y();
 341         destRect.w = background->w;
 342         destRect.h = background->h;
 343         SDL_BlitSurface(background, 0, screen, &destRect);
 344 }
 345
 346 void BattleState::RenderMonsters(SDL_Surface *screen, const Vector<int> &offset) {
 347         for (vector<Monster>::size_type i(0), end(monsters.size()); i < end; ++i) {
 348                 monsters[i].Sprite()->DrawCenter(screen, monsterPositions[i] + offset);
 349         }
 350 }
 351
 352 void BattleState::RenderHeroes(SDL_Surface *screen, const Vector<int> &offset) {
 353         for (int i(0); i < numHeroes; ++i) {
 354                 if (heroes[i].AttackAnimation() && heroes[i].AttackAnimation()->Running()) {
 355                         heroes[i].AttackAnimation()->DrawCenter(screen, heroesPositions[i] + offset);
 356                 } else if (heroes[i].SpellAnimation() && heroes[i].SpellAnimation()->Running()) {
 357                         heroes[i].SpellAnimation()->DrawCenter(screen, heroesPositions[i] + offset);
 358                 } else {
 359                         int row(heroes[i].Health() > 0 ? 0 : 2);
 360                         heroes[i].Sprite()->DrawCenter(screen, heroesPositions[i] + offset, 1, row);
 361                 }
 362         }
 363 }
 364
 365 void BattleState::RenderHeroTags(SDL_Surface *screen, const Vector<int> &offset) {
 366         int tagHeight(attackTypeMenu.Height());
 367         int tagWidth(attackTypeMenu.Width() * 2 + attackTypeMenu.Width() / 2);
 368
 369         for (int i(0); i < numHeroes; ++i) {
 370                 heroTags[i].Render(screen, tagWidth, tagHeight, heroTagPositions[i] + offset, (int)i == activeHero);
 371         }
 372 }
 373
 374 void BattleState::RenderSmallHeroTags(SDL_Surface *screen, const Vector<int> &offset) {
 375         int tagHeight(res->normalFont->CharHeight() * 4 + res->smallHeroTagFrame->BorderHeight() * 2);
 376         int tagWidth(res->normalFont->CharWidth() * 6 + res->smallHeroTagFrame->BorderWidth() * 2);
 377
 378         SDL_Rect rect;
 379         rect.x = offset.X();
 380         rect.y = offset.Y() + Height() - tagHeight;
 381         rect.w = Width();
 382         rect.h = tagHeight;
 383         SDL_FillRect(screen, &rect, SDL_MapRGB(screen->format, 0, 0, 0));
 384         rect.y += res->normalFont->CharHeight() / 8;
 385         rect.h -= res->normalFont->CharHeight() / 4;
 386         SDL_FillRect(screen, &rect, res->heroesBgColor);
 387
 388         for (int i(0); i < numHeroes; ++i) {
 389                 smallHeroTags[i].Render(screen, tagWidth, tagHeight, smallHeroTagPositions[i] + offset);
 390         }
 391 }
 392
 393 }