+ int phase;
+
+ MovDelay[x][y]--;
+ phase = 2-MovDelay[x][y]/delay;
+ if (!(MovDelay[x][y]%delay) && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
+ DrawGraphic(SCREENX(x), SCREENY(y),
+ (MovDir[x][y] == MV_LEFT ? GFX_MAUER_LEFT :
+ MovDir[x][y] == MV_RIGHT ? GFX_MAUER_RIGHT :
+ MovDir[x][y] == MV_UP ? GFX_MAUER_UP :
+ GFX_MAUER_DOWN ) + phase);
+
+ if (!MovDelay[x][y])
+ {
+ if (MovDir[x][y] == MV_LEFT)
+ {
+ if (IN_LEV_FIELD(x-1, y) && IS_MAUER(Feld[x-1][y]))
+ DrawLevelField(x-1, y);
+ }
+ else if (MovDir[x][y] == MV_RIGHT)
+ {
+ if (IN_LEV_FIELD(x+1, y) && IS_MAUER(Feld[x+1][y]))
+ DrawLevelField(x+1, y);
+ }
+ else if (MovDir[x][y] == MV_UP)
+ {
+ if (IN_LEV_FIELD(x, y-1) && IS_MAUER(Feld[x][y-1]))
+ DrawLevelField(x, y-1);
+ }
+ else
+ {
+ if (IN_LEV_FIELD(x, y+1) && IS_MAUER(Feld[x][y+1]))
+ DrawLevelField(x, y+1);
+ }
+
+ Feld[x][y] = Store[x][y];
+ Store[x][y] = 0;
+ MovDir[x][y] = MV_NO_MOVING;
+ DrawLevelField(x, y);
+ }
+ }
+}
+
+void MauerAbleger(int ax, int ay)
+{
+ int element = Feld[ax][ay];
+ boolean oben_frei = FALSE, unten_frei = FALSE;
+ boolean links_frei = FALSE, rechts_frei = FALSE;
+ boolean oben_massiv = FALSE, unten_massiv = FALSE;
+ boolean links_massiv = FALSE, rechts_massiv = FALSE;
+ boolean new_wall = FALSE;
+
+ if (!MovDelay[ax][ay]) /* start building new wall */
+ MovDelay[ax][ay] = 6;
+
+ if (MovDelay[ax][ay]) /* wait some time before building new wall */
+ {
+ MovDelay[ax][ay]--;
+ if (MovDelay[ax][ay])
+ return;
+ }
+
+ if (IN_LEV_FIELD(ax, ay-1) && IS_FREE(ax, ay-1))
+ oben_frei = TRUE;
+ if (IN_LEV_FIELD(ax, ay+1) && IS_FREE(ax, ay+1))
+ unten_frei = TRUE;
+ if (IN_LEV_FIELD(ax-1, ay) && IS_FREE(ax-1, ay))
+ links_frei = TRUE;
+ if (IN_LEV_FIELD(ax+1, ay) && IS_FREE(ax+1, ay))
+ rechts_frei = TRUE;
+
+ if (element == EL_WALL_GROWING_Y || element == EL_WALL_GROWING_XY)
+ {
+ if (oben_frei)
+ {
+ Feld[ax][ay-1] = EL_WALL_GROWING_ACTIVE;
+ Store[ax][ay-1] = element;
+ MovDir[ax][ay-1] = MV_UP;
+ if (IN_SCR_FIELD(SCREENX(ax), SCREENY(ay-1)))
+ DrawGraphic(SCREENX(ax), SCREENY(ay-1), GFX_MAUER_UP);
+ new_wall = TRUE;
+ }
+ if (unten_frei)
+ {
+ Feld[ax][ay+1] = EL_WALL_GROWING_ACTIVE;
+ Store[ax][ay+1] = element;
+ MovDir[ax][ay+1] = MV_DOWN;
+ if (IN_SCR_FIELD(SCREENX(ax), SCREENY(ay+1)))
+ DrawGraphic(SCREENX(ax), SCREENY(ay+1), GFX_MAUER_DOWN);
+ new_wall = TRUE;
+ }
+ }
+
+ if (element == EL_WALL_GROWING_X || element == EL_WALL_GROWING_XY ||
+ element == EL_WALL_GROWING)
+ {
+ if (links_frei)
+ {
+ Feld[ax-1][ay] = EL_WALL_GROWING_ACTIVE;
+ Store[ax-1][ay] = element;
+ MovDir[ax-1][ay] = MV_LEFT;
+ if (IN_SCR_FIELD(SCREENX(ax-1), SCREENY(ay)))
+ DrawGraphic(SCREENX(ax-1), SCREENY(ay), GFX_MAUER_LEFT);
+ new_wall = TRUE;
+ }
+
+ if (rechts_frei)
+ {
+ Feld[ax+1][ay] = EL_WALL_GROWING_ACTIVE;
+ Store[ax+1][ay] = element;
+ MovDir[ax+1][ay] = MV_RIGHT;
+ if (IN_SCR_FIELD(SCREENX(ax+1), SCREENY(ay)))
+ DrawGraphic(SCREENX(ax+1), SCREENY(ay), GFX_MAUER_RIGHT);
+ new_wall = TRUE;
+ }
+ }
+
+ if (element == EL_WALL_GROWING && (links_frei || rechts_frei))
+ DrawLevelField(ax, ay);
+
+ if (!IN_LEV_FIELD(ax, ay-1) || IS_MAUER(Feld[ax][ay-1]))
+ oben_massiv = TRUE;
+ if (!IN_LEV_FIELD(ax, ay+1) || IS_MAUER(Feld[ax][ay+1]))
+ unten_massiv = TRUE;
+ if (!IN_LEV_FIELD(ax-1, ay) || IS_MAUER(Feld[ax-1][ay]))
+ links_massiv = TRUE;
+ if (!IN_LEV_FIELD(ax+1, ay) || IS_MAUER(Feld[ax+1][ay]))
+ rechts_massiv = TRUE;
+
+ if (((oben_massiv && unten_massiv) ||
+ element == EL_WALL_GROWING_X || element == EL_WALL_GROWING) &&
+ ((links_massiv && rechts_massiv) ||
+ element == EL_WALL_GROWING_Y))
+ Feld[ax][ay] = EL_WALL;
+
+ if (new_wall)
+ PlaySoundLevel(ax, ay, SND_WALL_GROWING);
+}
+
+void CheckForDragon(int x, int y)
+{
+ int i, j;
+ boolean dragon_found = FALSE;
+ static int xy[4][2] =
+ {
+ { 0, -1 },
+ { -1, 0 },
+ { +1, 0 },
+ { 0, +1 }
+ };
+
+ for (i=0; i<4; i++)
+ {
+ for (j=0; j<4; j++)
+ {
+ int xx = x + j*xy[i][0], yy = y + j*xy[i][1];
+
+ if (IN_LEV_FIELD(xx, yy) &&
+ (Feld[xx][yy] == EL_DRAGON_FIRE || Feld[xx][yy] == EL_DRAGON))
+ {
+ if (Feld[xx][yy] == EL_DRAGON)
+ dragon_found = TRUE;
+ }
+ else
+ break;
+ }
+ }
+
+ if (!dragon_found)
+ {
+ for (i=0; i<4; i++)
+ {
+ for (j=0; j<3; j++)
+ {
+ int xx = x + j*xy[i][0], yy = y + j*xy[i][1];
+
+ if (IN_LEV_FIELD(xx, yy) && Feld[xx][yy] == EL_DRAGON_FIRE)
+ {
+ Feld[xx][yy] = EL_EMPTY;
+ DrawLevelField(xx, yy);
+ }
+ else
+ break;
+ }
+ }
+ }
+}
+
+static void CheckBuggyBase(int x, int y)
+{
+ int element = Feld[x][y];
+
+ if (element == EL_SP_BUGGY_BASE)
+ {
+ if (!MovDelay[x][y]) /* wait some time before activating base */
+ MovDelay[x][y] = 2 * FRAMES_PER_SECOND + RND(5 * FRAMES_PER_SECOND);
+
+ if (MovDelay[x][y])
+ {
+ MovDelay[x][y]--;
+ if (MovDelay[x][y] < 5 && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
+ DrawGraphic(SCREENX(x), SCREENY(y), GFX_SP_BUG_WARNING);
+ if (MovDelay[x][y])
+ return;
+
+ Feld[x][y] = EL_SP_BUGGY_BASE_ACTIVE;
+ }
+ }
+ else if (element == EL_SP_BUGGY_BASE_ACTIVE)
+ {
+ if (!MovDelay[x][y]) /* start activating buggy base */
+ MovDelay[x][y] = 1 * FRAMES_PER_SECOND + RND(1 * FRAMES_PER_SECOND);
+
+ if (MovDelay[x][y])
+ {
+ MovDelay[x][y]--;
+ if (MovDelay[x][y])
+ {
+ int i;
+ static int xy[4][2] =
+ {
+ { 0, -1 },
+ { -1, 0 },
+ { +1, 0 },
+ { 0, +1 }
+ };
+
+ if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
+ DrawGraphic(SCREENX(x),SCREENY(y), GFX_SP_BUG_ACTIVE + SimpleRND(4));
+
+ for (i=0; i<4; i++)
+ {
+ int xx = x + xy[i][0], yy = y + xy[i][1];
+
+ if (IS_PLAYER(xx, yy))
+ {
+ PlaySoundLevel(x, y, SND_SP_BUGGY_BASE_ACTIVE);
+ break;
+ }
+ }
+
+ return;
+ }
+
+ Feld[x][y] = EL_SP_BUGGY_BASE;
+ DrawLevelField(x, y);
+ }
+ }
+}
+
+static void CheckTrap(int x, int y)
+{
+ int element = Feld[x][y];
+
+ if (element == EL_TRAP)
+ {
+ if (!MovDelay[x][y]) /* wait some time before activating trap */
+ MovDelay[x][y] = 2 * FRAMES_PER_SECOND + RND(5 * FRAMES_PER_SECOND);
+
+ if (MovDelay[x][y])
+ {
+ MovDelay[x][y]--;
+ if (MovDelay[x][y])
+ return;
+
+ Feld[x][y] = EL_TRAP_ACTIVE;
+ PlaySoundLevel(x, y, SND_TRAP_ACTIVATING);
+ }
+ }
+ else if (element == EL_TRAP_ACTIVE)
+ {
+ int delay = 4;
+ int num_frames = 8;
+
+ if (!MovDelay[x][y]) /* start activating trap */
+ MovDelay[x][y] = num_frames * delay;
+
+ if (MovDelay[x][y])
+ {
+ MovDelay[x][y]--;
+
+ if (MovDelay[x][y])
+ {
+ if (!(MovDelay[x][y] % delay))
+ {
+ int phase = MovDelay[x][y]/delay;
+
+ if (phase >= num_frames/2)
+ phase = num_frames - phase;
+
+ if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
+ {
+ DrawGraphic(SCREENX(x),SCREENY(y), GFX_TRAP_INACTIVE + phase - 1);
+ ErdreichAnbroeckeln(SCREENX(x), SCREENY(y));
+ }
+ }
+
+ return;
+ }
+
+ Feld[x][y] = EL_TRAP;
+ DrawLevelField(x, y);
+ }
+ }
+}
+
+static void DrawBeltAnimation(int x, int y, int element)
+{
+ int belt_nr = getBeltNrFromBeltActiveElement(element);
+ int belt_dir = game.belt_dir[belt_nr];
+
+ if (belt_dir != MV_NO_MOVING)
+ {
+ int delay = 2;
+ int mode = (belt_dir == MV_LEFT ? ANIM_NORMAL : ANIM_REVERSE);
+ int graphic = el2gfx(element) + (belt_dir == MV_LEFT ? 0 : 7);
+
+ DrawGraphicAnimation(x, y, graphic, 8, delay, mode);
+
+ if (!(FrameCounter % 2))
+ PlaySoundLevel(x, y, SND_CONVEYOR_BELT_ACTIVE);
+ }
+}
+
+static void PlayerActions(struct PlayerInfo *player, byte player_action)
+{
+ static byte stored_player_action[MAX_PLAYERS];
+ static int num_stored_actions = 0;
+#if 0
+ static boolean save_tape_entry = FALSE;
+#endif
+ boolean moved = FALSE, snapped = FALSE, bombed = FALSE;
+ int left = player_action & JOY_LEFT;
+ int right = player_action & JOY_RIGHT;
+ int up = player_action & JOY_UP;
+ int down = player_action & JOY_DOWN;
+ int button1 = player_action & JOY_BUTTON_1;
+ int button2 = player_action & JOY_BUTTON_2;
+ int dx = (left ? -1 : right ? 1 : 0);
+ int dy = (up ? -1 : down ? 1 : 0);
+
+ stored_player_action[player->index_nr] = 0;
+ num_stored_actions++;
+
+ if (!player->active || tape.pausing)
+ return;
+
+ if (player_action)
+ {
+#if 0
+ save_tape_entry = TRUE;
+#endif
+ player->frame_reset_delay = 0;
+
+ if (button1)
+ snapped = SnapField(player, dx, dy);
+ else
+ {
+ if (button2)
+ bombed = PlaceBomb(player);
+ moved = MoveFigure(player, dx, dy);
+ }
+
+ if (tape.single_step && tape.recording && !tape.pausing)
+ {
+ if (button1 || (bombed && !moved))
+ {
+ TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
+ SnapField(player, 0, 0); /* stop snapping */
+ }
+ }
+
+#if 0
+ if (tape.recording && (moved || snapped || bombed))
+ {
+ if (bombed && !moved)
+ player_action &= JOY_BUTTON;
+
+ stored_player_action[player->index_nr] = player_action;
+ save_tape_entry = TRUE;
+ }
+ else if (tape.playing && snapped)
+ SnapField(player, 0, 0); /* stop snapping */
+#else
+ stored_player_action[player->index_nr] = player_action;
+#endif
+ }
+ else
+ {
+ /* no actions for this player (no input at player's configured device) */
+
+ DigField(player, 0, 0, 0, 0, DF_NO_PUSH);
+ SnapField(player, 0, 0);
+ CheckGravityMovement(player);
+
+#if 1
+ if (player->MovPos == 0) /* needed for tape.playing */
+ player->is_moving = FALSE;
+#endif
+#if 0
+ if (player->MovPos == 0) /* needed for tape.playing */
+ player->last_move_dir = MV_NO_MOVING;
+
+ /* !!! CHECK THIS AGAIN !!!
+ (Seems to be needed for some EL_ROBOT stuff, but breaks
+ tapes when walking through pipes!)
+ */
+
+ /* it seems that "player->last_move_dir" is misused as some sort of
+ "player->is_just_moving_in_this_moment", which is needed for the
+ robot stuff (robots don't kill players when they are moving)
+ */
+#endif
+
+ if (++player->frame_reset_delay > player->move_delay_value)
+ player->Frame = 0;
+ }
+
+#if 0
+ if (tape.recording && num_stored_actions >= MAX_PLAYERS && save_tape_entry)
+ {
+ TapeRecordAction(stored_player_action);
+ num_stored_actions = 0;
+ save_tape_entry = FALSE;
+ }
+#else
+ if (tape.recording && num_stored_actions >= MAX_PLAYERS)
+ {
+ TapeRecordAction(stored_player_action);
+ num_stored_actions = 0;
+ }
+#endif
+
+#if 0
+ if (tape.playing && !tape.pausing && !player_action &&
+ tape.counter < tape.length)
+ {
+ int jx = player->jx, jy = player->jy;
+ int next_joy =
+ tape.pos[tape.counter].action[player->index_nr] & (JOY_LEFT|JOY_RIGHT);
+
+ if ((next_joy == JOY_LEFT || next_joy == JOY_RIGHT) &&
+ (player->MovDir != JOY_UP && player->MovDir != JOY_DOWN))
+ {
+ int dx = (next_joy == JOY_LEFT ? -1 : +1);
+
+ if (IN_LEV_FIELD(jx+dx, jy) && IS_PUSHABLE(Feld[jx+dx][jy]))
+ {
+ int el = Feld[jx+dx][jy];
+ int push_delay = (IS_SB_ELEMENT(el) || el == EL_SATELLITE ? 2 :
+ (el == EL_BALLOON || el == EL_SPRING) ? 0 : 10);
+
+ if (tape.delay_played + push_delay >= tape.pos[tape.counter].delay)
+ {
+ player->MovDir = next_joy;
+ player->Frame = FrameCounter % 4;
+ player->Pushing = TRUE;
+ }
+ }
+ }
+ }
+#endif
+}
+
+void GameActions()
+{
+ static unsigned long action_delay = 0;
+ unsigned long action_delay_value;
+ int sieb_x = 0, sieb_y = 0;
+ int i, x, y, element;
+ byte *recorded_player_action;
+ byte summarized_player_action = 0;
+
+ if (game_status != PLAYING)
+ return;
+
+ action_delay_value =
+ (tape.playing && tape.fast_forward ? FfwdFrameDelay : GameFrameDelay);
+
+ if (tape.playing && tape.index_search && !tape.pausing)
+ action_delay_value = 0;
+
+ /* ---------- main game synchronization point ---------- */
+
+ WaitUntilDelayReached(&action_delay, action_delay_value);
+
+ if (network_playing && !network_player_action_received)
+ {
+ /*
+#ifdef DEBUG
+ printf("DEBUG: try to get network player actions in time\n");
+#endif
+ */
+
+#if defined(PLATFORM_UNIX)
+ /* last chance to get network player actions without main loop delay */
+ HandleNetworking();
+#endif
+
+ if (game_status != PLAYING)
+ return;
+
+ if (!network_player_action_received)
+ {
+ /*
+#ifdef DEBUG
+ printf("DEBUG: failed to get network player actions in time\n");
+#endif
+ */
+ return;
+ }
+ }
+
+ if (tape.pausing)
+ return;
+
+ recorded_player_action = (tape.playing ? TapePlayAction() : NULL);
+
+ for (i=0; i<MAX_PLAYERS; i++)
+ {
+ summarized_player_action |= stored_player[i].action;
+
+ if (!network_playing)
+ stored_player[i].effective_action = stored_player[i].action;
+ }
+
+#if defined(PLATFORM_UNIX)
+ if (network_playing)
+ SendToServer_MovePlayer(summarized_player_action);
+#endif
+
+ if (!options.network && !setup.team_mode)
+ local_player->effective_action = summarized_player_action;
+
+ for (i=0; i<MAX_PLAYERS; i++)
+ {
+ int actual_player_action = stored_player[i].effective_action;
+
+ if (stored_player[i].programmed_action)
+ actual_player_action = stored_player[i].programmed_action;
+
+ if (recorded_player_action)
+ actual_player_action = recorded_player_action[i];
+
+ PlayerActions(&stored_player[i], actual_player_action);
+ ScrollFigure(&stored_player[i], SCROLL_GO_ON);
+ }
+
+ network_player_action_received = FALSE;
+
+ ScrollScreen(NULL, SCROLL_GO_ON);
+
+
+
+#ifdef DEBUG
+#if 0
+ if (TimeFrames == 0 && local_player->active)
+ {
+ extern unsigned int last_RND();
+
+ printf("DEBUG: %03d last RND was %d \t [state checksum is %d]\n",
+ TimePlayed, last_RND(), getStateCheckSum(TimePlayed));
+ }
+#endif
+#endif
+
+#ifdef DEBUG
+#if 0
+ if (GameFrameDelay >= 500)
+ printf("FrameCounter == %d\n", FrameCounter);
+#endif
+#endif
+
+
+
+ FrameCounter++;
+ TimeFrames++;
+
+ for (y=0; y<lev_fieldy; y++) for (x=0; x<lev_fieldx; x++)
+ {
+ Stop[x][y] = FALSE;
+ if (JustStopped[x][y] > 0)
+ JustStopped[x][y]--;
+
+#if DEBUG
+ if (IS_BLOCKED(x, y))
+ {
+ int oldx, oldy;
+
+ Blocked2Moving(x, y, &oldx, &oldy);
+ if (!IS_MOVING(oldx, oldy))
+ {
+ printf("GameActions(): (BLOCKED => MOVING) context corrupted!\n");
+ printf("GameActions(): BLOCKED: x = %d, y = %d\n", x, y);
+ printf("GameActions(): !MOVING: oldx = %d, oldy = %d\n", oldx, oldy);
+ printf("GameActions(): This should never happen!\n");
+ }
+ }
+#endif
+ }
+
+ for (y=0; y<lev_fieldy; y++) for (x=0; x<lev_fieldx; x++)
+ {
+ element = Feld[x][y];
+
+ if (IS_INACTIVE(element))
+ continue;
+
+ if (!IS_MOVING(x, y) && (CAN_FALL(element) || CAN_MOVE(element)))
+ {
+ StartMoving(x, y);
+
+ if (IS_GEM(element) || element == EL_SP_INFOTRON)
+ EdelsteinFunkeln(x, y);
+ }
+ else if (IS_MOVING(x, y))
+ ContinueMoving(x, y);
+ else if (IS_ACTIVE_BOMB(element))
+ CheckDynamite(x, y);
+#if 0
+ else if (element == EL_EXPLOSION && !game.explosions_delayed)
+ Explode(x, y, Frame[x][y], EX_NORMAL);
+#endif
+ else if (element == EL_AMOEBA_CREATING)
+ AmoebeWaechst(x, y);
+ else if (element == EL_AMOEBA_SHRINKING)
+ AmoebaDisappearing(x, y);
+
+#if !USE_NEW_AMOEBA_CODE
+ else if (IS_AMOEBALIVE(element))
+ AmoebeAbleger(x, y);
+#endif
+
+ else if (element == EL_GAMEOFLIFE || element == EL_BIOMAZE)
+ Life(x, y);
+ else if (element == EL_ROBOT_WHEEL_ACTIVE)
+ RobotWheel(x, y);
+ else if (element == EL_TIMEGATE_SWITCH_ACTIVE)
+ TimegateWheel(x, y);
+ else if (element == EL_ACID)
+ Blubber(x, y);
+ else if (element == EL_ACID_SPLASHING_LEFT ||
+ element == EL_ACID_SPLASHING_RIGHT)
+ Blurb(x, y);
+ else if (element == EL_CRACKINGNUT)
+ NussKnacken(x, y);
+ else if (element == EL_PEARL_BREAKING)
+ BreakingPearl(x, y);
+ else if (element == EL_EXIT_CLOSED)
+ AusgangstuerPruefen(x, y);
+ else if (element == EL_SP_EXIT_CLOSED)
+ AusgangstuerPruefen_SP(x, y);
+ else if (element == EL_EXIT_OPENING)
+ AusgangstuerOeffnen(x, y);
+ else if (element == EL_EXIT_OPEN)
+ AusgangstuerBlinken(x, y);
+ else if (element == EL_SP_EXIT_OPEN)
+ ; /* !!! ADD SOME (OPTIONAL) ANIMATIONS HERE !!! */
+ else if (element == EL_WALL_GROWING_ACTIVE)
+ MauerWaechst(x, y);
+ else if (element == EL_WALL_GROWING ||
+ element == EL_WALL_GROWING_X ||
+ element == EL_WALL_GROWING_Y ||
+ element == EL_WALL_GROWING_XY)
+ MauerAbleger(x, y);
+ else if (element == EL_DRAGON_FIRE)
+ CheckForDragon(x, y);
+ else if (element == EL_SP_BUGGY_BASE || element == EL_SP_BUGGY_BASE_ACTIVE)
+ CheckBuggyBase(x, y);
+ else if (element == EL_TRAP || element == EL_TRAP_ACTIVE)
+ CheckTrap(x, y);
+ else if (element == EL_SP_TERMINAL)
+ DrawGraphicAnimation(x, y, GFX2_SP_TERMINAL, 7, 12, ANIM_NORMAL);
+ else if (element == EL_SP_TERMINAL_ACTIVE)
+ {
+ DrawGraphicAnimation(x, y, GFX2_SP_TERMINAL_ACTIVE, 7, 4, ANIM_NORMAL);
+#if 0
+ if (!(FrameCounter % 4))
+ PlaySoundLevel(x, y, SND_SP_TERMINAL_ACTIVE);
+#endif
+ }
+ else if (IS_BELT_ACTIVE(element))
+ DrawBeltAnimation(x, y, element);
+ else if (element == EL_SWITCHGATE_OPENING)
+ OpenSwitchgate(x, y);
+ else if (element == EL_SWITCHGATE_CLOSING)
+ CloseSwitchgate(x, y);
+ else if (element == EL_TIMEGATE_OPENING)
+ OpenTimegate(x, y);
+ else if (element == EL_TIMEGATE_CLOSING)
+ CloseTimegate(x, y);
+ else if (element == EL_EXTRA_TIME)
+ DrawGraphicAnimation(x, y, GFX_EXTRA_TIME, 6, 4, ANIM_NORMAL);
+ else if (element == EL_SHIELD_NORMAL)
+ {
+ DrawGraphicAnimation(x, y, GFX_SHIELD_PASSIVE, 6, 4, ANIM_NORMAL);
+#if 0
+ if (!(FrameCounter % 4))
+ PlaySoundLevel(x, y, SND_SHIELD_PASSIVE_ACTIVATED);
+#endif
+ }
+ else if (element == EL_SHIELD_DEADLY)
+ {
+ DrawGraphicAnimation(x, y, GFX_SHIELD_ACTIVE, 6, 4, ANIM_NORMAL);
+#if 0
+ if (!(FrameCounter % 4))
+ PlaySoundLevel(x, y, SND_SHIELD_DEADLY_ACTIVE);
+#endif
+ }
+
+ if (game.magic_wall_active)
+ {
+ boolean sieb = FALSE;
+ int jx = local_player->jx, jy = local_player->jy;
+
+ if (element == EL_MAGIC_WALL_FULL ||
+ element == EL_MAGIC_WALL_ACTIVE ||
+ element == EL_MAGIC_WALL_EMPTYING)
+ {
+ SiebAktivieren(x, y, 1);
+ sieb = TRUE;
+ }
+ else if (element == EL_BD_MAGIC_WALL_FULL ||
+ element == EL_BD_MAGIC_WALL_ACTIVE ||
+ element == EL_BD_MAGIC_WALL_EMPTYING)
+ {
+ SiebAktivieren(x, y, 2);
+ sieb = TRUE;
+ }
+
+ /* play the element sound at the position nearest to the player */
+ if (sieb && ABS(x-jx)+ABS(y-jy) < ABS(sieb_x-jx)+ABS(sieb_y-jy))
+ {
+ sieb_x = x;
+ sieb_y = y;
+ }
+ }
+ }
+
+#if USE_NEW_AMOEBA_CODE
+ /* new experimental amoeba growth stuff */
+#if 1
+ if (!(FrameCounter % 8))
+#endif
+ {
+ static unsigned long random = 1684108901;
+
+ for (i = 0; i < level.amoeba_speed * 28 / 8; i++)
+ {
+#if 0
+ x = (random >> 10) % lev_fieldx;
+ y = (random >> 20) % lev_fieldy;
+#else
+ x = RND(lev_fieldx);
+ y = RND(lev_fieldy);
+#endif
+ element = Feld[x][y];
+
+ if (!IS_PLAYER(x,y) &&
+ (element == EL_EMPTY ||
+ element == EL_SAND ||
+ element == EL_QUICKSAND_EMPTY ||
+ element == EL_ACID_SPLASHING_LEFT ||
+ element == EL_ACID_SPLASHING_RIGHT))
+ {
+ if ((IN_LEV_FIELD(x, y-1) && Feld[x][y-1] == EL_AMOEBA_WET) ||
+ (IN_LEV_FIELD(x-1, y) && Feld[x-1][y] == EL_AMOEBA_WET) ||
+ (IN_LEV_FIELD(x+1, y) && Feld[x+1][y] == EL_AMOEBA_WET) ||
+ (IN_LEV_FIELD(x, y+1) && Feld[x][y+1] == EL_AMOEBA_WET))
+ Feld[x][y] = EL_AMOEBA_DROP;
+ }
+
+ random = random * 129 + 1;
+ }
+ }
+#endif
+
+#if 0
+ if (game.explosions_delayed)
+#endif
+ {
+ game.explosions_delayed = FALSE;
+
+ for (y=0; y<lev_fieldy; y++) for (x=0; x<lev_fieldx; x++)
+ {
+ element = Feld[x][y];
+
+ if (ExplodeField[x][y])
+ Explode(x, y, EX_PHASE_START, ExplodeField[x][y]);
+ else if (element == EL_EXPLOSION)
+ Explode(x, y, Frame[x][y], EX_NORMAL);
+
+ ExplodeField[x][y] = EX_NO_EXPLOSION;
+ }
+
+ game.explosions_delayed = TRUE;
+ }
+
+ if (game.magic_wall_active)
+ {
+ if (!(game.magic_wall_time_left % 4))
+ {
+ int element = Feld[sieb_x][sieb_y];
+
+ if (element == EL_BD_MAGIC_WALL_FULL ||
+ element == EL_BD_MAGIC_WALL_ACTIVE ||
+ element == EL_BD_MAGIC_WALL_EMPTYING)
+ PlaySoundLevel(sieb_x, sieb_y, SND_BD_MAGIC_WALL_ACTIVE);
+ else
+ PlaySoundLevel(sieb_x, sieb_y, SND_MAGIC_WALL_ACTIVE);
+ }
+
+ if (game.magic_wall_time_left > 0)
+ {
+ game.magic_wall_time_left--;
+ if (!game.magic_wall_time_left)
+ {
+ for (y=0; y<lev_fieldy; y++) for (x=0; x<lev_fieldx; x++)
+ {
+ element = Feld[x][y];
+
+ if (element == EL_MAGIC_WALL_ACTIVE ||
+ element == EL_MAGIC_WALL_FULL)
+ {
+ Feld[x][y] = EL_MAGIC_WALL_DEAD;
+ DrawLevelField(x, y);
+ }
+ else if (element == EL_BD_MAGIC_WALL_ACTIVE ||
+ element == EL_BD_MAGIC_WALL_FULL)
+ {
+ Feld[x][y] = EL_BD_MAGIC_WALL_DEAD;
+ DrawLevelField(x, y);
+ }
+ }
+
+ game.magic_wall_active = FALSE;
+ }
+ }
+ }
+
+ if (game.light_time_left > 0)
+ {
+ game.light_time_left--;
+
+ if (game.light_time_left == 0)
+ {
+ for (y=0; y<lev_fieldy; y++) for (x=0; x<lev_fieldx; x++)
+ {
+ element = Feld[x][y];
+
+ if (element == EL_LIGHT_SWITCH_ACTIVE)
+ {
+ Feld[x][y] = EL_LIGHT_SWITCH;
+ DrawLevelField(x, y);
+ }
+ else if (element == EL_INVISIBLE_STEELWALL ||
+ element == EL_INVISIBLE_WALL ||
+ element == EL_INVISIBLE_SAND)
+ DrawLevelField(x, y);
+ }
+ }
+ }
+
+ if (game.timegate_time_left > 0)
+ {
+ game.timegate_time_left--;
+
+ if (game.timegate_time_left == 0)
+ CloseAllOpenTimegates();
+ }
+
+ for (i=0; i<MAX_PLAYERS; i++)
+ {
+ struct PlayerInfo *player = &stored_player[i];
+
+ if (SHIELD_ON(player))
+ {
+ if (player->shield_active_time_left)
+ PlaySoundLevel(player->jx, player->jy, SND_SHIELD_DEADLY_ACTIVE);
+ else if (player->shield_passive_time_left)
+ PlaySoundLevel(player->jx, player->jy, SND_SHIELD_NORMAL_ACTIVE);
+ }
+ }
+
+ if (TimeFrames >= (1000 / GameFrameDelay))
+ {
+ TimeFrames = 0;
+ TimePlayed++;
+
+ for (i=0; i<MAX_PLAYERS; i++)
+ {
+ struct PlayerInfo *player = &stored_player[i];
+
+ if (SHIELD_ON(player))
+ {
+ player->shield_passive_time_left--;
+
+ if (player->shield_active_time_left > 0)
+ player->shield_active_time_left--;
+ }
+ }
+
+ if (tape.recording || tape.playing)
+ DrawVideoDisplay(VIDEO_STATE_TIME_ON, TimePlayed);
+
+ if (TimeLeft > 0)
+ {
+ TimeLeft--;
+
+ if (TimeLeft <= 10 && setup.time_limit)
+ PlaySoundStereo(SND_GAME_RUNNING_OUT_OF_TIME, SOUND_MAX_RIGHT);
+
+ DrawText(DX_TIME, DY_TIME, int2str(TimeLeft, 3), FS_SMALL, FC_YELLOW);
+
+ if (!TimeLeft && setup.time_limit)
+ for (i=0; i<MAX_PLAYERS; i++)
+ KillHero(&stored_player[i]);
+ }
+ else if (level.time == 0 && !AllPlayersGone) /* level without time limit */
+ DrawText(DX_TIME, DY_TIME, int2str(TimePlayed, 3), FS_SMALL, FC_YELLOW);
+ }
+
+ DrawAllPlayers();
+
+ if (options.debug) /* calculate frames per second */
+ {
+ static unsigned long fps_counter = 0;
+ static int fps_frames = 0;
+ unsigned long fps_delay_ms = Counter() - fps_counter;
+
+ fps_frames++;
+
+ if (fps_delay_ms >= 500) /* calculate fps every 0.5 seconds */
+ {
+ global.frames_per_second = 1000 * (float)fps_frames / fps_delay_ms;
+
+ fps_frames = 0;
+ fps_counter = Counter();
+ }
+
+ redraw_mask |= REDRAW_FPS;
+ }
+}
+
+static boolean AllPlayersInSight(struct PlayerInfo *player, int x, int y)
+{
+ int min_x = x, min_y = y, max_x = x, max_y = y;
+ int i;
+
+ for (i=0; i<MAX_PLAYERS; i++)
+ {
+ int jx = stored_player[i].jx, jy = stored_player[i].jy;
+
+ if (!stored_player[i].active || &stored_player[i] == player)
+ continue;
+
+ min_x = MIN(min_x, jx);
+ min_y = MIN(min_y, jy);
+ max_x = MAX(max_x, jx);
+ max_y = MAX(max_y, jy);
+ }
+
+ return (max_x - min_x < SCR_FIELDX && max_y - min_y < SCR_FIELDY);
+}
+
+static boolean AllPlayersInVisibleScreen()
+{
+ int i;
+
+ for (i=0; i<MAX_PLAYERS; i++)
+ {
+ int jx = stored_player[i].jx, jy = stored_player[i].jy;
+
+ if (!stored_player[i].active)
+ continue;
+
+ if (!IN_VIS_FIELD(SCREENX(jx), SCREENY(jy)))
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+void ScrollLevel(int dx, int dy)
+{
+ int softscroll_offset = (setup.soft_scrolling ? TILEX : 0);
+ int x, y;
+
+ BlitBitmap(drawto_field, drawto_field,
+ FX + TILEX*(dx == -1) - softscroll_offset,
+ FY + TILEY*(dy == -1) - softscroll_offset,
+ SXSIZE - TILEX*(dx!=0) + 2*softscroll_offset,
+ SYSIZE - TILEY*(dy!=0) + 2*softscroll_offset,
+ FX + TILEX*(dx == 1) - softscroll_offset,
+ FY + TILEY*(dy == 1) - softscroll_offset);
+
+ if (dx)
+ {
+ x = (dx == 1 ? BX1 : BX2);
+ for (y=BY1; y<=BY2; y++)
+ DrawScreenField(x, y);
+ }
+ if (dy)
+ {
+ y = (dy == 1 ? BY1 : BY2);
+ for (x=BX1; x<=BX2; x++)
+ DrawScreenField(x, y);
+ }
+
+ redraw_mask |= REDRAW_FIELD;
+}
+
+static void CheckGravityMovement(struct PlayerInfo *player)
+{
+ if (level.gravity && !player->programmed_action)
+ {
+ int move_dir_vertical = player->action & (MV_UP | MV_DOWN);
+ int move_dir_horizontal = player->action & (MV_LEFT | MV_RIGHT);
+ int move_dir =
+ (player->last_move_dir & (MV_LEFT | MV_RIGHT) ?
+ (move_dir_vertical ? move_dir_vertical : move_dir_horizontal) :
+ (move_dir_horizontal ? move_dir_horizontal : move_dir_vertical));
+ int jx = player->jx, jy = player->jy;
+ int dx = (move_dir & MV_LEFT ? -1 : move_dir & MV_RIGHT ? +1 : 0);
+ int dy = (move_dir & MV_UP ? -1 : move_dir & MV_DOWN ? +1 : 0);
+ int new_jx = jx + dx, new_jy = jy + dy;
+ boolean field_under_player_is_free =
+ (IN_LEV_FIELD(jx, jy + 1) && IS_FREE(jx, jy + 1));
+ boolean player_is_moving_to_valid_field =
+ (IN_LEV_FIELD(new_jx, new_jy) &&
+ (Feld[new_jx][new_jy] == EL_SP_BASE ||
+ Feld[new_jx][new_jy] == EL_SAND));
+
+ if (field_under_player_is_free &&
+ !player_is_moving_to_valid_field &&
+ !IS_TUBE(Feld[jx][jy]))
+ player->programmed_action = MV_DOWN;
+ }
+}
+
+boolean MoveFigureOneStep(struct PlayerInfo *player,
+ int dx, int dy, int real_dx, int real_dy)
+{
+ int jx = player->jx, jy = player->jy;
+ int new_jx = jx+dx, new_jy = jy+dy;
+ int element;
+ int can_move;
+
+ if (!player->active || (!dx && !dy))
+ return MF_NO_ACTION;
+
+ player->MovDir = (dx < 0 ? MV_LEFT :
+ dx > 0 ? MV_RIGHT :
+ dy < 0 ? MV_UP :
+ dy > 0 ? MV_DOWN : MV_NO_MOVING);
+
+ if (!IN_LEV_FIELD(new_jx, new_jy))
+ return MF_NO_ACTION;
+
+ if (!options.network && !AllPlayersInSight(player, new_jx, new_jy))
+ return MF_NO_ACTION;
+
+#if 0
+ element = MovingOrBlocked2Element(new_jx, new_jy);
+#else
+ element = MovingOrBlocked2ElementIfNotLeaving(new_jx, new_jy);
+#endif
+
+ if (DONT_GO_TO(element))
+ {
+ if (element == EL_ACID && dx == 0 && dy == 1)
+ {
+ Blurb(jx, jy);
+ Feld[jx][jy] = EL_PLAYER;
+ InitMovingField(jx, jy, MV_DOWN);
+ Store[jx][jy] = EL_ACID;
+ ContinueMoving(jx, jy);
+ BuryHero(player);
+ }
+ else
+ TestIfHeroRunsIntoBadThing(jx, jy, player->MovDir);
+
+ return MF_MOVING;
+ }
+
+ can_move = DigField(player, new_jx, new_jy, real_dx, real_dy, DF_DIG);
+ if (can_move != MF_MOVING)
+ return can_move;
+
+ StorePlayer[jx][jy] = 0;
+ player->last_jx = jx;
+ player->last_jy = jy;
+ jx = player->jx = new_jx;
+ jy = player->jy = new_jy;
+ StorePlayer[jx][jy] = player->element_nr;
+
+ player->MovPos =
+ (dx > 0 || dy > 0 ? -1 : 1) * (TILEX - TILEX / player->move_delay_value);
+
+ ScrollFigure(player, SCROLL_INIT);
+
+ return MF_MOVING;
+}
+
+boolean MoveFigure(struct PlayerInfo *player, int dx, int dy)
+{
+ int jx = player->jx, jy = player->jy;
+ int old_jx = jx, old_jy = jy;
+ int moved = MF_NO_ACTION;
+
+ if (!player->active || (!dx && !dy))
+ return FALSE;
+
+#if 0
+ if (!FrameReached(&player->move_delay, player->move_delay_value) &&
+ !tape.playing)
+ return FALSE;
+#else
+ if (!FrameReached(&player->move_delay, player->move_delay_value) &&
+ !(tape.playing && tape.file_version < FILE_VERSION_2_0))
+ return FALSE;
+#endif
+
+ /* remove the last programmed player action */
+ player->programmed_action = 0;
+
+ if (player->MovPos)
+ {
+ /* should only happen if pre-1.2 tape recordings are played */
+ /* this is only for backward compatibility */
+
+ int original_move_delay_value = player->move_delay_value;
+
+#if DEBUG
+ printf("THIS SHOULD ONLY HAPPEN WITH PRE-1.2 LEVEL TAPES.\n");
+#endif
+
+ /* scroll remaining steps with finest movement resolution */
+ player->move_delay_value = MOVE_DELAY_NORMAL_SPEED;
+
+ while (player->MovPos)
+ {
+ ScrollFigure(player, SCROLL_GO_ON);
+ ScrollScreen(NULL, SCROLL_GO_ON);
+ FrameCounter++;
+ DrawAllPlayers();
+ BackToFront();
+ }
+
+ player->move_delay_value = original_move_delay_value;
+ }
+
+ if (player->last_move_dir & (MV_LEFT | MV_RIGHT))
+ {
+ if (!(moved |= MoveFigureOneStep(player, 0, dy, dx, dy)))
+ moved |= MoveFigureOneStep(player, dx, 0, dx, dy);
+ }
+ else
+ {
+ if (!(moved |= MoveFigureOneStep(player, dx, 0, dx, dy)))
+ moved |= MoveFigureOneStep(player, 0, dy, dx, dy);
+ }
+
+ jx = player->jx;
+ jy = player->jy;
+
+ if (moved & MF_MOVING && !ScreenMovPos &&
+ (player == local_player || !options.network))
+ {
+ int old_scroll_x = scroll_x, old_scroll_y = scroll_y;
+ int offset = (setup.scroll_delay ? 3 : 0);
+
+ if (!IN_VIS_FIELD(SCREENX(jx), SCREENY(jy)))
+ {
+ /* actual player has left the screen -- scroll in that direction */
+ if (jx != old_jx) /* player has moved horizontally */
+ scroll_x += (jx - old_jx);
+ else /* player has moved vertically */
+ scroll_y += (jy - old_jy);
+ }
+ else
+ {
+ if (jx != old_jx) /* player has moved horizontally */
+ {
+ if ((player->MovDir == MV_LEFT && scroll_x > jx - MIDPOSX + offset) ||
+ (player->MovDir == MV_RIGHT && scroll_x < jx - MIDPOSX - offset))
+ scroll_x = jx-MIDPOSX + (scroll_x < jx-MIDPOSX ? -offset : +offset);
+
+ /* don't scroll over playfield boundaries */
+ if (scroll_x < SBX_Left || scroll_x > SBX_Right)
+ scroll_x = (scroll_x < SBX_Left ? SBX_Left : SBX_Right);
+
+ /* don't scroll more than one field at a time */
+ scroll_x = old_scroll_x + SIGN(scroll_x - old_scroll_x);
+
+ /* don't scroll against the player's moving direction */
+ if ((player->MovDir == MV_LEFT && scroll_x > old_scroll_x) ||
+ (player->MovDir == MV_RIGHT && scroll_x < old_scroll_x))
+ scroll_x = old_scroll_x;
+ }
+ else /* player has moved vertically */
+ {
+ if ((player->MovDir == MV_UP && scroll_y > jy - MIDPOSY + offset) ||
+ (player->MovDir == MV_DOWN && scroll_y < jy - MIDPOSY - offset))
+ scroll_y = jy-MIDPOSY + (scroll_y < jy-MIDPOSY ? -offset : +offset);
+
+ /* don't scroll over playfield boundaries */
+ if (scroll_y < SBY_Upper || scroll_y > SBY_Lower)
+ scroll_y = (scroll_y < SBY_Upper ? SBY_Upper : SBY_Lower);
+
+ /* don't scroll more than one field at a time */
+ scroll_y = old_scroll_y + SIGN(scroll_y - old_scroll_y);
+
+ /* don't scroll against the player's moving direction */
+ if ((player->MovDir == MV_UP && scroll_y > old_scroll_y) ||
+ (player->MovDir == MV_DOWN && scroll_y < old_scroll_y))
+ scroll_y = old_scroll_y;
+ }
+ }
+
+ if (scroll_x != old_scroll_x || scroll_y != old_scroll_y)
+ {
+ if (!options.network && !AllPlayersInVisibleScreen())
+ {
+ scroll_x = old_scroll_x;
+ scroll_y = old_scroll_y;
+ }
+ else
+ {
+ ScrollScreen(player, SCROLL_INIT);
+ ScrollLevel(old_scroll_x - scroll_x, old_scroll_y - scroll_y);
+ }
+ }
+ }
+
+ if (!(moved & MF_MOVING) && !player->Pushing)
+ player->Frame = 0;
+ else
+ player->Frame = (player->Frame + 1) % 4;
+
+ if (moved & MF_MOVING)
+ {
+ if (old_jx != jx && old_jy == jy)
+ player->MovDir = (old_jx < jx ? MV_RIGHT : MV_LEFT);
+ else if (old_jx == jx && old_jy != jy)
+ player->MovDir = (old_jy < jy ? MV_DOWN : MV_UP);
+
+ DrawLevelField(jx, jy); /* for "ErdreichAnbroeckeln()" */
+
+ player->last_move_dir = player->MovDir;
+ player->is_moving = TRUE;
+ }
+ else
+ {
+ CheckGravityMovement(player);
+
+ /*
+ player->last_move_dir = MV_NO_MOVING;
+ */
+ player->is_moving = FALSE;
+ }
+
+ TestIfHeroTouchesBadThing(jx, jy);
+
+ if (!player->active)
+ RemoveHero(player);
+
+ return moved;
+}
+
+void ScrollFigure(struct PlayerInfo *player, int mode)
+{
+ int jx = player->jx, jy = player->jy;
+ int last_jx = player->last_jx, last_jy = player->last_jy;
+ int move_stepsize = TILEX / player->move_delay_value;
+
+ if (!player->active || !player->MovPos)
+ return;
+
+ if (mode == SCROLL_INIT)
+ {
+ player->actual_frame_counter = FrameCounter;
+ player->GfxPos = move_stepsize * (player->MovPos / move_stepsize);
+
+ if (Feld[last_jx][last_jy] == EL_EMPTY)
+ Feld[last_jx][last_jy] = EL_PLAYER_IS_LEAVING;
+
+ DrawPlayer(player);
+ return;
+ }
+ else if (!FrameReached(&player->actual_frame_counter, 1))
+ return;
+
+ player->MovPos += (player->MovPos > 0 ? -1 : 1) * move_stepsize;
+ player->GfxPos = move_stepsize * (player->MovPos / move_stepsize);
+
+ if (Feld[last_jx][last_jy] == EL_PLAYER_IS_LEAVING)
+ Feld[last_jx][last_jy] = EL_EMPTY;
+
+ /* before DrawPlayer() to draw correct player graphic for this case */
+ if (player->MovPos == 0)
+ CheckGravityMovement(player);
+
+ DrawPlayer(player);
+
+ if (player->MovPos == 0)
+ {
+ if (IS_QUICK_GATE(Feld[last_jx][last_jy]))
+ {
+ /* continue with normal speed after quickly moving through gate */
+ HALVE_PLAYER_SPEED(player);
+
+ /* be able to make the next move without delay */
+ player->move_delay = 0;
+ }
+
+ player->last_jx = jx;
+ player->last_jy = jy;
+
+ if (Feld[jx][jy] == EL_EXIT_OPEN ||
+ Feld[jx][jy] == EL_SP_EXIT_OPEN)
+ {
+ RemoveHero(player);
+
+ if (local_player->friends_still_needed == 0 ||
+ Feld[jx][jy] == EL_SP_EXIT_OPEN)
+ player->LevelSolved = player->GameOver = TRUE;
+ }
+
+ if (tape.single_step && tape.recording && !tape.pausing &&
+ !player->programmed_action)
+ TapeTogglePause(TAPE_TOGGLE_AUTOMATIC);
+ }
+}
+
+void ScrollScreen(struct PlayerInfo *player, int mode)
+{
+ static unsigned long screen_frame_counter = 0;
+
+ if (mode == SCROLL_INIT)
+ {
+ /* set scrolling step size according to actual player's moving speed */
+ ScrollStepSize = TILEX / player->move_delay_value;
+
+ screen_frame_counter = FrameCounter;
+ ScreenMovDir = player->MovDir;
+ ScreenMovPos = player->MovPos;
+ ScreenGfxPos = ScrollStepSize * (ScreenMovPos / ScrollStepSize);
+ return;
+ }
+ else if (!FrameReached(&screen_frame_counter, 1))
+ return;
+
+ if (ScreenMovPos)
+ {
+ ScreenMovPos += (ScreenMovPos > 0 ? -1 : 1) * ScrollStepSize;
+ ScreenGfxPos = ScrollStepSize * (ScreenMovPos / ScrollStepSize);
+ redraw_mask |= REDRAW_FIELD;
+ }
+ else
+ ScreenMovDir = MV_NO_MOVING;
+}
+
+void TestIfGoodThingHitsBadThing(int good_x, int good_y, int good_move_dir)
+{
+ int i, kill_x = -1, kill_y = -1;
+ static int test_xy[4][2] =
+ {
+ { 0, -1 },
+ { -1, 0 },
+ { +1, 0 },
+ { 0, +1 }
+ };
+ static int test_dir[4] =
+ {
+ MV_UP,
+ MV_LEFT,
+ MV_RIGHT,
+ MV_DOWN
+ };
+
+ for (i=0; i<4; i++)
+ {
+ int test_x, test_y, test_move_dir, test_element;
+
+ test_x = good_x + test_xy[i][0];
+ test_y = good_y + test_xy[i][1];
+ if (!IN_LEV_FIELD(test_x, test_y))
+ continue;
+
+ test_move_dir =
+ (IS_MOVING(test_x, test_y) ? MovDir[test_x][test_y] : MV_NO_MOVING);
+
+#if 0
+ test_element = Feld[test_x][test_y];
+#else
+ test_element = MovingOrBlocked2ElementIfNotLeaving(test_x, test_y);
+#endif
+
+ /* 1st case: good thing is moving towards DONT_GO_TO style bad thing;
+ 2nd case: DONT_TOUCH style bad thing does not move away from good thing
+ */
+ if ((DONT_GO_TO(test_element) && good_move_dir == test_dir[i]) ||
+ (DONT_TOUCH(test_element) && test_move_dir != test_dir[i]))
+ {
+ kill_x = test_x;
+ kill_y = test_y;
+ break;
+ }
+ }
+
+ if (kill_x != -1 || kill_y != -1)
+ {
+ if (IS_PLAYER(good_x, good_y))
+ {
+ struct PlayerInfo *player = PLAYERINFO(good_x, good_y);
+
+ if (player->shield_active_time_left > 0)
+ Bang(kill_x, kill_y);
+ else if (!PLAYER_PROTECTED(good_x, good_y))
+ KillHero(player);
+ }
+ else
+ Bang(good_x, good_y);
+ }
+}
+
+void TestIfBadThingHitsGoodThing(int bad_x, int bad_y, int bad_move_dir)
+{
+ int i, kill_x = -1, kill_y = -1;
+ int bad_element = Feld[bad_x][bad_y];
+ static int test_xy[4][2] =
+ {
+ { 0, -1 },
+ { -1, 0 },
+ { +1, 0 },
+ { 0, +1 }
+ };
+ static int test_dir[4] =
+ {
+ MV_UP,
+ MV_LEFT,