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
  31 }
  32
  33
  34 void MapState::EnterState(Application &ctrl, SDL_Surface *screen) {
  35         camera.Resize(screen->w, screen->h);
  36 }
  37
  38 void MapState::ExitState(Application &ctrl, SDL_Surface *screen) {
  39
  40 }
  41
  42 void MapState::ResumeState(Application &ctrl, SDL_Surface *screen) {
  43         camera.Resize(screen->w, screen->h);
  44 }
  45
  46 void MapState::PauseState(Application &ctrl, SDL_Surface *screen) {
  47
  48 }
  49
  50 void MapState::Resize(int width, int height) {
  51         camera.Resize(width, height);
  52 }
  53
  54
  55 void MapState::HandleEvents(const Input &input) {
  56         if (!controlled) return;
  57
  58         if (input.IsDown(Input::PAD_UP)) {
  59                 nextDirection = Entity::ORIENTATION_NORTH;
  60         } else if (input.IsDown(Input::PAD_RIGHT)) {
  61                 nextDirection = Entity::ORIENTATION_EAST;
  62         } else if (input.IsDown(Input::PAD_DOWN)) {
  63                 nextDirection = Entity::ORIENTATION_SOUTH;
  64         } else if (input.IsDown(Input::PAD_LEFT)) {
  65                 nextDirection = Entity::ORIENTATION_WEST;
  66         } else {
  67                 nextDirection = -1;
  68         }
  69 }
  70
  71 void MapState::UpdateWorld(float deltaT) {
  72         if (controlled && controlled->TileLock(map->Tileset()->Width(), map->Tileset()->Height())) {
  73                 // TODO: call step hooks here
  74                 // TODO: break/merge time deltas into distinct pixel movements for better step accuracy
  75                 if (nextDirection >= 0) {
  76                         controlled->SetOrientation(Entity::Orientation(nextDirection));
  77                         const Tile &tile(map->TileAt(controlled->Position()));
  78                         bool blocked(false);
  79                         switch (controlled->GetOrientation()) {
  80                                 case Entity::ORIENTATION_NORTH:
  81                                         blocked = tile.BlocksNorth();
  82                                         break;
  83                                 case Entity::ORIENTATION_EAST:
  84                                         blocked = tile.BlocksEast();
  85                                         break;
  86                                 case Entity::ORIENTATION_SOUTH:
  87                                         blocked = tile.BlocksSouth();
  88                                         break;
  89                                 case Entity::ORIENTATION_WEST:
  90                                         blocked = tile.BlocksWest();
  91                                         break;
  92                         }
  93                         if (!blocked) {
  94                                 controlled->SetSpeed(walkingSpeed);
  95                         } else {
  96                                 controlled->SetSpeed(0.0f);
  97                         }
  98                 } else {
  99                         controlled->SetSpeed(0.0f);
 100                 }
 101         }
 102         for (std::vector<Entity *>::iterator i(entities.begin()), end(entities.end()); i != end; ++i) {
 103                 (*i)->Update(deltaT);
 104         }
 105 }
 106
 107 void MapState::Render(SDL_Surface *screen) {
 108         SDL_FillRect(screen, 0, SDL_MapRGB(screen->format, 0, 0, 0));
 109
 110         Vector<int> offset(camera.CalculateOffset());
 111         map->Render(screen, offset);
 112
 113         std::sort(entities.begin(), entities.end(), ZCompare);
 114         for (std::vector<Entity *>::iterator i(entities.begin()), end(entities.end()); i != end; ++i) {
 115                 (*i)->Render(screen, offset);
 116         }
 117 }
 118
 119
 120 bool MapState::ZCompare(const Entity *lhs, const Entity *rhs) {
 121         return lhs->Position().Y() < rhs->Position().Y();
 122 }
 123
 124 }