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