// SuperTux - Unstable Tile
// Copyright (C) 2006 Matthias Braun <matze@braunis.de>
// Copyright (C) 2006 Christoph Sommer <christoph.sommer@2006.expires.deltadevelopment.de>
+// Copyright (C) 2010 Florian Forster <supertux at octo.it>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
#include "object/unstable_tile.hpp"
+#include "object/explosion.hpp"
#include "object/player.hpp"
#include "sprite/sprite.hpp"
#include "supertux/constants.hpp"
#include "supertux/object_factory.hpp"
UnstableTile::UnstableTile(const Reader& lisp) :
- MovingSprite(lisp, LAYER_TILES, COLGROUP_STATIC),
+ MovingSprite(lisp, LAYER_TILES, COLGROUP_STATIC),
physic(),
- state(STATE_NORMAL)
+ state(STATE_NORMAL),
+ slowfall_timer()
{
sprite->set_action("normal");
+ physic.set_gravity_modifier (.98);
+ physic.enable_gravity (false);
}
HitResponse
Player* player = dynamic_cast<Player*> (&other);
if(player != NULL &&
player->get_bbox().get_bottom() < get_bbox().get_top() + SHIFT_DELTA) {
- state = STATE_CRUMBLING;
- sprite->set_action("crumbling", 1);
+ shake ();
+ }
+
+ if (dynamic_cast<Explosion*> (&other)) {
+ shake ();
}
}
return FORCE_MOVE;
}
+void UnstableTile::shake (void)
+{
+ if (state != STATE_NORMAL)
+ return;
+
+ if (sprite->has_action ("shake")) {
+ state = STATE_SHAKE;
+ this->set_action ("shake", /* loops = */ 1);
+ }
+ else {
+ dissolve ();
+ }
+}
+
+void UnstableTile::dissolve (void)
+{
+ if ((state != STATE_NORMAL) && (state != STATE_SHAKE))
+ return;
+
+ if (sprite->has_action ("dissolve")) {
+ state = STATE_DISSOLVE;
+ this->set_action ("dissolve", /* loops = */ 1);
+ }
+ else {
+ slow_fall ();
+ }
+}
+
+void UnstableTile::slow_fall (void)
+{
+ /* Only enter slow-fall if neither shake nor dissolve is available. */
+ if (state != STATE_NORMAL) {
+ this->fall_down ();
+ return;
+ }
+
+ if (sprite->has_action ("fall-down")) {
+ state = STATE_SLOWFALL;
+ this->set_action ("fall-down", /* loops = */ 1);
+ physic.set_gravity_modifier (.10);
+ physic.enable_gravity (true);
+ slowfall_timer = 0.5; /* Fall slowly for half a second. */
+ }
+ else {
+ remove_me ();
+ }
+}
+
+void UnstableTile::fall_down (void)
+{
+ if ((state != STATE_NORMAL)
+ && (state != STATE_SHAKE)
+ && (state != STATE_DISSOLVE)
+ && (state != STATE_SLOWFALL))
+ return;
+
+ if (sprite->has_action ("fall-down")) {
+ state = STATE_FALL;
+ this->set_action ("fall-down", /* loops = */ 1);
+ physic.set_gravity_modifier (.98);
+ physic.enable_gravity (true);
+ }
+ else {
+ remove_me ();
+ }
+}
+
void
UnstableTile::update(float elapsed_time)
{
- switch (state) {
-
+ switch (state)
+ {
case STATE_NORMAL:
break;
- case STATE_CRUMBLING:
- if (sprite->animation_done()) {
- state = STATE_DISINTEGRATING;
- sprite->set_action("disintegrating", 1);
- set_group(COLGROUP_DISABLED);
- physic.enable_gravity(true);
- }
+ case STATE_SHAKE:
+ if (sprite->animation_done())
+ dissolve ();
break;
- case STATE_DISINTEGRATING:
- movement = physic.get_movement(elapsed_time);
+ case STATE_DISSOLVE:
if (sprite->animation_done()) {
- remove_me();
- return;
+ /* dissolving is done. Set to non-solid. */
+ set_group (COLGROUP_DISABLED);
+ fall_down ();
}
break;
+
+ case STATE_SLOWFALL:
+ if (slowfall_timer >= elapsed_time)
+ slowfall_timer -= elapsed_time;
+ else /* Switch to normal falling procedure */
+ fall_down ();
+ movement = physic.get_movement (elapsed_time);
+ break;
+
+ case STATE_FALL:
+ if (sprite->animation_done())
+ remove_me ();
+ else
+ movement = physic.get_movement (elapsed_time);
+ break;
}
}