src/map/Entity.cpp

   1 /*
   2  * Entity.cpp
   3  *
   4  *  Created on: Sep 29, 2012
   5  *      Author: holy
   6  */
   7
   8 #include "Entity.h"
   9
  10 #include "../loader/TypeDescription.h"
  11
  12 using geometry::Vector;
  13 using loader::FieldDescription;
  14 using loader::TypeDescription;
  15
  16 namespace map {
  17
  18 Entity::Entity()
  19 : follower(0)
  20 , animation(0)
  21 , partyLayout(0)
  22 , monsters(0)
  23 , numMonsters(0)
  24 , orientation(ORIENTATION_NORTH)
  25 , speed(0)
  26 , flags(0) {
  27         runner.SetFrameShift(1);
  28 }
  29
  30
  31 void Entity::SetOrientation(Orientation o) {
  32         orientation = o;
  33         UpdateVelocity();
  34         runner.SetColOffset(orientation);
  35 }
  36
  37 void Entity::SetSpeed(float s) {
  38         speed = s;
  39         UpdateVelocity();
  40 }
  41
  42 void Entity::StartAnimation(app::Application &ctrl) {
  43         runner.Start(ctrl);
  44 }
  45
  46 void Entity::StartAnimation(app::State &ctrl) {
  47         runner.Start(ctrl);
  48 }
  49
  50 void Entity::StopAnimation() {
  51         runner.Stop();
  52 }
  53
  54 void Entity::AddFollower(Entity *f) {
  55         if (follower) {
  56                 follower->AddFollower(f);
  57         } else {
  58                 follower = f;
  59         }
  60 }
  61
  62 void Entity::RemoveFollower(Entity *f) {
  63         if (follower == f) {
  64                 follower = follower->follower;
  65         } else if (follower) {
  66                 follower->RemoveFollower(f);
  67         }
  68 }
  69
  70 void Entity::SetAnimation(const graphics::Animation *a) {
  71         animation = a;
  72         runner.ChangeAnimation(animation);
  73 }
  74
  75
  76 void Entity::UpdateVelocity() {
  77         if (speed == 0.0f) {
  78                 velocity = Vector<float>();
  79                 return;
  80         }
  81         switch (orientation) {
  82                 case ORIENTATION_NORTH:
  83                         velocity = Vector<float>(0.0f, -speed);
  84                         break;
  85                 case ORIENTATION_EAST:
  86                         velocity = Vector<float>(speed, 0.0f);
  87                         break;
  88                 case ORIENTATION_SOUTH:
  89                         velocity = Vector<float>(0.0f, speed);
  90                         break;
  91                 case ORIENTATION_WEST:
  92                         velocity = Vector<float>(-speed, 0.0f);
  93                         break;
  94         }
  95 }
  96
  97
  98 bool Entity::TileLock(const geometry::Vector<int> &tileSize) const {
  99         // TODO: change position to point to the top-left corner of a tile
 100         Vector<int> tilePosition(position);
 101         return (tilePosition.X() % tileSize.X() == 0) && (tilePosition.Y() % tileSize.Y() == 0);
 102 }
 103
 104
 105 void Entity::Update(float deltaT) {
 106         position += velocity * deltaT;
 107 }
 108
 109
 110 void Entity::Render(SDL_Surface *dest, const Vector<int> &offset) const {
 111         // TODO: configurable sprite offsets
 112         if (runner.Running()) {
 113                 runner.Draw(dest, offset + position + spriteOffset);
 114         } else {
 115                 animation->GetSprite()->Draw(dest, offset + position + spriteOffset, orientation);
 116         }
 117 }
 118
 119
 120 void Entity::CreateTypeDescription() {
 121         Entity e;
 122
 123         int animationId(TypeDescription::GetTypeId("Animation"));
 124         int monsterId(TypeDescription::GetTypeId("Monster"));
 125         int partyLayoutId(TypeDescription::GetTypeId("PartyLayout"));
 126         int vectorId(TypeDescription::GetTypeId("Vector"));
 127
 128         TypeDescription &td(TypeDescription::CreateOrGet("Entity"));
 129         td.SetConstructor(&Construct);
 130         td.SetLoader(&Load);
 131         td.SetSize(sizeof(Entity));
 132
 133         td.AddField("animation", FieldDescription(((char *)&e.animation) - ((char *)&e), animationId).SetReferenced());
 134         td.AddField("partyLayout", FieldDescription(((char *)&e.partyLayout) - ((char *)&e), partyLayoutId).SetReferenced());
 135         td.AddField("monsters", FieldDescription(((char *)&e.monsters) - ((char *)&e), monsterId).SetReferenced().SetAggregate());
 136         td.AddField("spriteOffset", FieldDescription(((char *)&e.spriteOffset) - ((char *)&e), vectorId));
 137 }
 138
 139 void Entity::Construct(void *data) {
 140         new (data) Entity;
 141 }
 142
 143 void Entity::Load(void *data) {
 144         Entity *entity(reinterpret_cast<Entity *>(data));
 145         entity->runner.ChangeAnimation(entity->animation);
 146 }
 147
 148 }