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 , sprite(0)
  22 , partyLayout(0)
  23 , monsters(0)
  24 , numMonsters(0)
  25 , orientation(ORIENTATION_NORTH)
  26 , speed(0)
  27 , flags(0) {
  28         runner.SetFrameShift(1);
  29 }
  30
  31
  32 void Entity::SetOrientation(Orientation o) {
  33         orientation = o;
  34         UpdateVelocity();
  35         if (CanTurn()) {
  36                 runner.SetColOffset(orientation);
  37         }
  38 }
  39
  40 void Entity::SetSpeed(float s) {
  41         speed = s;
  42         UpdateVelocity();
  43 }
  44
  45
  46 void Entity::StartAnimation(app::Application &ctrl) {
  47         runner.Start(ctrl);
  48 }
  49
  50 void Entity::StartAnimation(app::State &ctrl) {
  51         runner.Start(ctrl);
  52 }
  53
  54 void Entity::StopAnimation() {
  55         runner.Stop();
  56 }
  57
  58
  59 void Entity::SetHandsFree() {
  60         runner.SetRowOffset(0);
  61 }
  62
  63 void Entity::SetCarrying() {
  64         runner.SetRowOffset(2);
  65 }
  66
  67 void Entity::SetPushing() {
  68         runner.SetRowOffset(4);
  69 }
  70
  71
  72 void Entity::AddFollower(Entity *f) {
  73         if (follower) {
  74                 follower->AddFollower(f);
  75         } else {
  76                 follower = f;
  77         }
  78 }
  79
  80 void Entity::RemoveFollower(Entity *f) {
  81         if (follower == f) {
  82                 follower = follower->follower;
  83         } else if (follower) {
  84                 follower->RemoveFollower(f);
  85         }
  86 }
  87
  88 void Entity::SetAnimation(const graphics::Animation *a) {
  89         animation = a;
  90         runner.ChangeAnimation(animation);
  91         if (!sprite) {
  92                 sprite = animation->GetSprite();
  93         }
  94 }
  95
  96
  97 void Entity::UpdateVelocity() {
  98         if (speed == 0.0f) {
  99                 velocity = Vector<float>();
 100                 return;
 101         }
 102         switch (orientation) {
 103                 case ORIENTATION_NORTH:
 104                         velocity = Vector<float>(0.0f, -speed);
 105                         break;
 106                 case ORIENTATION_EAST:
 107                         velocity = Vector<float>(speed, 0.0f);
 108                         break;
 109                 case ORIENTATION_SOUTH:
 110                         velocity = Vector<float>(0.0f, speed);
 111                         break;
 112                 case ORIENTATION_WEST:
 113                         velocity = Vector<float>(-speed, 0.0f);
 114                         break;
 115         }
 116 }
 117
 118
 119 bool Entity::TileLock(const geometry::Vector<int> &tileSize) const {
 120         // TODO: change position to point to the top-left corner of a tile
 121         Vector<int> tilePosition(position);
 122         return (tilePosition.X() % tileSize.X() == 0) && (tilePosition.Y() % tileSize.Y() == 0);
 123 }
 124
 125
 126 void Entity::Update(float deltaT) {
 127         position += velocity * deltaT;
 128 }
 129
 130
 131 void Entity::Render(SDL_Surface *dest, const Vector<int> &offset) const {
 132         // TODO: configurable sprite offsets
 133         if (runner.Running()) {
 134                 runner.Draw(dest, offset + position + spriteOffset);
 135         } else {
 136                 sprite->Draw(dest, offset + position + spriteOffset, CanTurn() ? orientation : 0);
 137         }
 138 }
 139
 140
 141 void Entity::CreateTypeDescription() {
 142         Entity e;
 143
 144         int animationId(TypeDescription::GetTypeId("Animation"));
 145         int monsterId(TypeDescription::GetTypeId("Monster"));
 146         int partyLayoutId(TypeDescription::GetTypeId("PartyLayout"));
 147         int vectorId(TypeDescription::GetTypeId("Vector"));
 148
 149         TypeDescription &td(TypeDescription::CreateOrGet("Entity"));
 150         td.SetConstructor(&Construct);
 151         td.SetLoader(&Load);
 152         td.SetSize(sizeof(Entity));
 153
 154         td.AddField("animation", FieldDescription(((char *)&e.animation) - ((char *)&e), animationId).SetReferenced());
 155         td.AddField("partyLayout", FieldDescription(((char *)&e.partyLayout) - ((char *)&e), partyLayoutId).SetReferenced());
 156         td.AddField("monsters", FieldDescription(((char *)&e.monsters) - ((char *)&e), monsterId).SetReferenced().SetAggregate());
 157         td.AddField("spriteOffset", FieldDescription(((char *)&e.spriteOffset) - ((char *)&e), vectorId));
 158 }
 159
 160 void Entity::Construct(void *data) {
 161         new (data) Entity;
 162 }
 163
 164 void Entity::Load(void *data) {
 165         Entity *entity(reinterpret_cast<Entity *>(data));
 166         if (entity->animation) {
 167                 entity->runner.ChangeAnimation(entity->animation);
 168                 if (!entity->sprite) {
 169                         entity->sprite = entity->animation->GetSprite();
 170                 }
 171         }
 172 }
 173
 174 }