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                 Vector<int> nowLock(controlled->Position());
  75                 if (nowLock != lastLock) {
  76                         OnGridLock();
  77                 }
  78                 if (nextDirection >= 0) {
  79                         if (afterLock) {
  80                                 // FIXME: this check is unreliable, see #21
  81                                 OnMove();
  82                                 afterLock = false;
  83                         }
  84                         controlled->SetOrientation(Entity::Orientation(nextDirection));
  85                         const Tile &tile(map->TileAt(controlled->Position()));
  86                         bool blocked(false);
  87                         switch (controlled->GetOrientation()) {
  88                                 case Entity::ORIENTATION_NORTH:
  89                                         blocked = tile.BlocksNorth();
  90                                         break;
  91                                 case Entity::ORIENTATION_EAST:
  92                                         blocked = tile.BlocksEast();
  93                                         break;
  94                                 case Entity::ORIENTATION_SOUTH:
  95                                         blocked = tile.BlocksSouth();
  96                                         break;
  97                                 case Entity::ORIENTATION_WEST:
  98                                         blocked = tile.BlocksWest();
  99                                         break;
 100                         }
 101                         if (!blocked) {
 102                                 controlled->SetSpeed(walkingSpeed);
 103                         } else {
 104                                 controlled->SetSpeed(0.0f);
 105                         }
 106                         if (!controlled->AnimationRunning()) {
 107                                 controlled->StartAnimation(*this);
 108                         }
 109                 } else {
 110                         controlled->SetSpeed(0.0f);
 111                         controlled->StopAnimation();
 112                 }
 113                 if (nowLock != lastLock) {
 114                         lastLock = nowLock;
 115                         afterLock = true;
 116                 }
 117         }
 118         for (std::vector<Entity *>::iterator i(entities.begin()), end(entities.end()); i != end; ++i) {
 119                 (*i)->Update(deltaT);
 120         }
 121 }
 122
 123 void MapState::OnGridLock() {
 124         Trigger *trigger(map->TriggerAt(Vector<int>(controlled->Position())));
 125         if (trigger) {
 126                 // TODO: run trigger
 127         }
 128         // TODO: check for adjacent monsters
 129         // TODO: force all entities into their grid positions?
 130 }
 131
 132 void MapState::OnMove() {
 133         // TODO: evaluate monster movements
 134         UpdateFollower(controlled);
 135 }
 136
 137 void MapState::UpdateFollower(Entity *e) {
 138         if (!e->Follower()) return;
 139         UpdateFollower(e->Follower());
 140
 141         e->Follower()->SetOrientation(e->GetOrientation());
 142         // TODO: set follower speed
 143 }
 144
 145
 146 void MapState::Render(SDL_Surface *screen) {
 147         SDL_FillRect(screen, 0, SDL_MapRGB(screen->format, 0, 0, 0));
 148
 149         Vector<int> offset(camera.CalculateOffset());
 150         map->Render(screen, offset);
 151
 152         std::sort(entities.begin(), entities.end(), ZCompare);
 153         for (std::vector<Entity *>::iterator i(entities.begin()), end(entities.end()); i != end; ++i) {
 154                 (*i)->Render(screen, offset);
 155         }
 156 }
 157
 158
 159 bool MapState::ZCompare(const Entity *lhs, const Entity *rhs) {
 160         return lhs->Position().Y() < rhs->Position().Y();
 161 }
 162
 163 }