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