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 using geometry::Vector;
  11
  12 namespace map {
  13
  14 Entity::Entity()
  15 : animation(0)
  16 , orientation(ORIENTATION_NORTH)
  17 , speed(0) {
  18         runner.SetFrameShift(1);
  19 }
  20
  21
  22 void Entity::SetOrientation(Orientation o) {
  23         orientation = o;
  24         UpdateVelocity();
  25         runner.SetColOffset(orientation);
  26 }
  27
  28 void Entity::SetSpeed(float s) {
  29         speed = s;
  30         UpdateVelocity();
  31 }
  32
  33 void Entity::SetAnimation(const graphics::Animation *a) {
  34         animation = a;
  35         runner.ChangeAnimation(animation);
  36 }
  37
  38
  39 void Entity::UpdateVelocity() {
  40         if (speed == 0.0f) {
  41                 velocity = Vector<float>();
  42                 return;
  43         }
  44         switch (orientation) {
  45                 case ORIENTATION_NORTH:
  46                         velocity = Vector<float>(0.0f, -speed);
  47                         break;
  48                 case ORIENTATION_EAST:
  49                         velocity = Vector<float>(speed, 0.0f);
  50                         break;
  51                 case ORIENTATION_SOUTH:
  52                         velocity = Vector<float>(0.0f, speed);
  53                         break;
  54                 case ORIENTATION_WEST:
  55                         velocity = Vector<float>(-speed, 0.0f);
  56                         break;
  57         }
  58 }
  59
  60
  61 bool Entity::TileLock(int width, int height) const {
  62         Vector<int> tilePosition(
  63                         position.X() - (width / 2),
  64                         position.Y());
  65         return (tilePosition.X() % width == 0) && (tilePosition.Y() % height == 0);
  66 }
  67
  68
  69 void Entity::Update(float deltaT) {
  70         position += velocity * deltaT;
  71 }
  72
  73
  74 void Entity::Render(SDL_Surface *dest, const Vector<int> &offset) const {
  75         // TODO: configurable sprite offsets
  76         if (runner.Running()) {
  77                 runner.DrawCenter(dest, offset + position);
  78         } else {
  79                 animation->GetSprite()->DrawCenter(dest, offset + position, orientation);
  80         }
  81 }
  82
  83 }