src/badguy/flyingsnowball.cpp

   1 #include <config.h>
   2 #include <stdio.h>
   3
   4 #include "flyingsnowball.h"
   5
   6 static const float FLYTIME = 1.0;
   7 static const float FLYSPEED = 100.0;
   8
   9 FlyingSnowBall::FlyingSnowBall(const lisp::Lisp& reader)
  10 {
  11   reader.get("x", start_position.x);
  12   reader.get("y", start_position.y);
  13   bbox.set_size(31.8, 31.8);
  14   sprite = sprite_manager->create("flyingsnowball");
  15   physic.enable_gravity(false);
  16 }
  17
  18 FlyingSnowBall::FlyingSnowBall(float pos_x, float pos_y)
  19 {
  20   start_position.x = pos_x;
  21   start_position.y = pos_y;
  22   bbox.set_size(31.8, 31.8);
  23   sprite = sprite_manager->create("flyingsnowball");
  24   physic.enable_gravity(false);
  25 }
  26
  27 void
  28 FlyingSnowBall::write(lisp::Writer& writer)
  29 {
  30   writer.start_list("flyingsnowball");
  31
  32   writer.write_float("x", start_position.x);
  33   writer.write_float("y", start_position.y);
  34
  35   writer.end_list("flyingsnowball");
  36 }
  37
  38 void
  39 FlyingSnowBall::activate()
  40 {
  41   sprite->set_action(dir == LEFT ? "left" : "right");
  42   mode = FLY_UP;
  43   physic.set_velocity_y(FLYSPEED);
  44   timer.start(FLYTIME/2);
  45 }
  46
  47 bool
  48 FlyingSnowBall::collision_squished(Player& player)
  49 {
  50   sprite->set_action(dir == LEFT ? "squished-left" : "squished-right");
  51   kill_squished(player);
  52   return true;
  53 }
  54
  55 HitResponse
  56 FlyingSnowBall::collision_solid(GameObject& , const CollisionHit& hit)
  57 {
  58   if(fabsf(hit.normal.y) > .5) { // hit floor or roof?
  59     physic.set_velocity_y(0);
  60   }
  61
  62   return CONTINUE;
  63 }
  64
  65 void
  66 FlyingSnowBall::active_action(float elapsed_time)
  67 {
  68   if(timer.check()) {
  69     if(mode == FLY_UP) {
  70       mode = FLY_DOWN;
  71       physic.set_velocity_y(-FLYSPEED);
  72     } else if(mode == FLY_DOWN) {
  73       mode = FLY_UP;
  74       physic.set_velocity_y(FLYSPEED);
  75     }
  76     timer.start(FLYTIME);
  77   }
  78   movement=physic.get_movement(elapsed_time);
  79   dir= Sector::current()->player->get_pos().x>get_pos().x?RIGHT:LEFT;
  80   sprite->set_action(dir == LEFT ? "left" : "right");
  81 }
  82