src/map/MapState.cpp

   1 /*
   2  * MapState.cpp
   3  *
   4  *  Created on: Sep 29, 2012
   5  *      Author: holy
   6  */
   7
   8 #include "MapState.h"
   9
  10 #include "Map.h"
  11 #include "Tile.h"
  12 #include "../app/Application.h"
  13 #include "../app/Input.h"
  14
  15 #include <algorithm>
  16
  17 using app::Application;
  18 using app::Input;
  19 using geometry::Vector;
  20
  21 namespace map {
  22
  23 MapState::MapState(Map *map)
  24 : map(map)
  25 , controlled(0)
  26 , tempTarget(20, 20)
  27 , camera(100, 100, &tempTarget)
  28 , walkingSpeed(64)
  29 , nextDirection(-1)
  30 , afterLock(false) {
  31
  32 }
  33
  34
  35 void MapState::EnterState(Application &ctrl, SDL_Surface *screen) {
  36         camera.Resize(screen->w, screen->h);
  37 }
  38
  39 void MapState::ExitState(Application &ctrl, SDL_Surface *screen) {
  40
  41 }
  42
  43 void MapState::ResumeState(Application &ctrl, SDL_Surface *screen) {
  44         camera.Resize(screen->w, screen->h);
  45 }
  46
  47 void MapState::PauseState(Application &ctrl, SDL_Surface *screen) {
  48
  49 }
  50
  51 void MapState::Resize(int width, int height) {
  52         camera.Resize(width, height);
  53 }
  54
  55
  56 void MapState::HandleEvents(const Input &input) {
  57         if (!controlled) return;
  58
  59         if (input.IsDown(Input::PAD_UP)) {
  60                 nextDirection = Entity::ORIENTATION_NORTH;
  61         } else if (input.IsDown(Input::PAD_RIGHT)) {
  62                 nextDirection = Entity::ORIENTATION_EAST;
  63         } else if (input.IsDown(Input::PAD_DOWN)) {
  64                 nextDirection = Entity::ORIENTATION_SOUTH;
  65         } else if (input.IsDown(Input::PAD_LEFT)) {
  66                 nextDirection = Entity::ORIENTATION_WEST;
  67         } else {
  68                 nextDirection = -1;
  69         }
  70 }
  71
  72 void MapState::UpdateWorld(float deltaT) {
  73         if (controlled && controlled->TileLock(map->Tileset()->Width(), map->Tileset()->Height())) {
  74                 OnTileLock();
  75         }
  76         for (std::vector<Entity *>::iterator i(entities.begin()), end(entities.end()); i != end; ++i) {
  77                 (*i)->Update(deltaT);
  78         }
  79 }
  80
  81 void MapState::OnTileLock() {
  82         if (moveTimer.Running() && !moveTimer.JustHit()) return;
  83
  84         Vector<int> nowLock(controlled->Position());
  85         if (nowLock != lastLock) {
  86                 OnGridLock();
  87                 afterLock = true;
  88                 moveTimer.Clear();
  89         } else if (moveTimer.JustHit()) {
  90                 OnGridLock();
  91                 afterLock = true;
  92         }
  93
  94         if (nextDirection >= 0) {
  95                 if (afterLock) {
  96                         // FIXME: this check is unreliable, see #21
  97                         OnMove();
  98                         afterLock = false;
  99                 }
 100                 controlled->SetOrientation(Entity::Orientation(nextDirection));
 101                 const Tile &tile(map->TileAt(controlled->Position()));
 102                 bool blocked(false);
 103                 switch (controlled->GetOrientation()) {
 104                         case Entity::ORIENTATION_NORTH:
 105                                 blocked = tile.BlocksNorth();
 106                                 break;
 107                         case Entity::ORIENTATION_EAST:
 108                                 blocked = tile.BlocksEast();
 109                                 break;
 110                         case Entity::ORIENTATION_SOUTH:
 111                                 blocked = tile.BlocksSouth();
 112                                 break;
 113                         case Entity::ORIENTATION_WEST:
 114                                 blocked = tile.BlocksWest();
 115                                 break;
 116                 }
 117                 if (!blocked) {
 118                         controlled->SetSpeed(walkingSpeed);
 119                         moveTimer.Clear();
 120                 } else {
 121                         controlled->SetSpeed(0.0f);
 122                         if (!moveTimer.Running()) {
 123                                 int tileSize((controlled->GetOrientation() % 2) ? map->Tileset()->Width() : map->Tileset()->Height());
 124                                 moveTimer = PhysicsTimers().StartInterval(tileSize/walkingSpeed);
 125                         }
 126                 }
 127                 if (!controlled->AnimationRunning()) {
 128                         controlled->StartAnimation(*this);
 129                 }
 130         } else {
 131                 controlled->SetSpeed(0.0f);
 132                 controlled->StopAnimation();
 133                 moveTimer.Clear();
 134         }
 135
 136         lastLock = nowLock;
 137 }
 138
 139 void MapState::OnGridLock() {
 140         Trigger *trigger(map->TriggerAt(Vector<int>(controlled->Position())));
 141         if (trigger) {
 142                 // TODO: run trigger
 143         }
 144         // TODO: check for adjacent monsters
 145         // TODO: force all entities into their grid positions?
 146 }
 147
 148 void MapState::OnMove() {
 149         // TODO: evaluate monster movements
 150         UpdateFollower(controlled);
 151 }
 152
 153 void MapState::UpdateFollower(Entity *e) {
 154         if (!e->Follower()) return;
 155         UpdateFollower(e->Follower());
 156
 157         e->Follower()->SetOrientation(e->GetOrientation());
 158         // TODO: set follower speed
 159 }
 160
 161
 162 void MapState::Render(SDL_Surface *screen) {
 163         SDL_FillRect(screen, 0, SDL_MapRGB(screen->format, 0, 0, 0));
 164
 165         Vector<int> offset(camera.CalculateOffset());
 166         map->Render(screen, offset);
 167
 168         std::sort(entities.begin(), entities.end(), ZCompare);
 169         for (std::vector<Entity *>::iterator i(entities.begin()), end(entities.end()); i != end; ++i) {
 170                 (*i)->Render(screen, offset);
 171         }
 172 }
 173
 174
 175 bool MapState::ZCompare(const Entity *lhs, const Entity *rhs) {
 176         return lhs->Position().Y() < rhs->Position().Y();
 177 }
 178
 179 }