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elasota
318
GpApp/RubberBands.cpp
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318
GpApp/RubberBands.cpp
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//============================================================================
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//----------------------------------------------------------------------------
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// RubberBands.c
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//----------------------------------------------------------------------------
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//============================================================================
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#include "Externs.h"
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#include "RectUtils.h"
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#define kRubberBandVelocity 20
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#define kBandFallCount 4
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#define kKillBandMode -1
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void CheckBandCollision (short);
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void KillBand (short);
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bandPtr bands;
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Rect bandsSrcRect;
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Rect bandRects[3];
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GWorldPtr bandsSrcMap;
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GWorldPtr bandsMaskMap;
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short numBands, bandHitLast;
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extern hotPtr hotSpots;
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extern long gameFrame;
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extern short nHotSpots, leftThresh, rightThresh;
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extern Boolean twoPlayerGame, onePlayerLeft, playerDead;
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//============================================================== Functions
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//-------------------------------------------------------------- CheckBandCollision
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void CheckBandCollision (short who)
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{
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short i, action, whoLinked;
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Boolean collided, nothingCollided;
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nothingCollided = true;
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if ((leftThresh == kLeftWallLimit) && (bands[who].dest.left < kLeftWallLimit))
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{
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if (bands[who].hVel < 0)
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bands[who].hVel = -bands[who].hVel;
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bands[who].dest.left = kLeftWallLimit;
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bands[who].dest.right = bands[who].dest.left + 16;
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PlayPrioritySound(kBandReboundSound, kBandReboundPriority);
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collided = true;
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}
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else if ((rightThresh == kRightWallLimit) && (bands[who].dest.right > kRightWallLimit))
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{
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if (bands[who].hVel > 0)
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bands[who].hVel = -bands[who].hVel;
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bands[who].dest.right = kRightWallLimit;
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bands[who].dest.left = bands[who].dest.right - 16;
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PlayPrioritySound(kBandReboundSound, kBandReboundPriority);
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collided = true;
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}
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for (i = 0; i < nHotSpots; i++)
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{
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if (hotSpots[i].isOn)
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{
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action = hotSpots[i].action;
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if ((action == kDissolveIt) || (action == kRewardIt) ||
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(action == kSwitchIt) || (action == kTriggerIt) ||
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(action == kBounceIt))
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{
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if (bands[who].dest.bottom < hotSpots[i].bounds.top)
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collided = false;
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else if (bands[who].dest.top > hotSpots[i].bounds.bottom)
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collided = false;
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else if (bands[who].dest.right < hotSpots[i].bounds.left)
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collided = false;
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else if (bands[who].dest.left > hotSpots[i].bounds.right)
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collided = false;
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else
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collided = true;
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if (collided)
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{
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nothingCollided = false; // we have detected a collision
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if (bandHitLast != i) // don't count it if same as last frame
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{ // we don't want rapid on/off toggles
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bandHitLast = i; // note who so we don't double-toggle it
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if ((action == kDissolveIt) || (action == kBounceIt))
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{
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if (bands[who].hVel > 0)
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{
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if ((bands[who].dest.right - bands[who].hVel) <
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hotSpots[i].bounds.left)
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{
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bands[who].hVel = -bands[who].hVel;
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bands[who].dest.right = hotSpots[i].bounds.left;
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bands[who].dest.left = bands[who].dest.right - 16;
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}
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else
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bands[who].mode = kKillBandMode;
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}
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else
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{
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if ((bands[who].dest.left - bands[who].hVel) >
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hotSpots[i].bounds.right)
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{
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bands[who].hVel = -bands[who].hVel;
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bands[who].dest.left = hotSpots[i].bounds.right;
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bands[who].dest.right = bands[who].dest.left + 16;
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}
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else
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bands[who].mode = kKillBandMode;
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}
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PlayPrioritySound(kBandReboundSound, kBandReboundPriority);
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break;
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}
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else if (action == kRewardIt)
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{
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whoLinked = hotSpots[i].who;
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if ((masterObjects[whoLinked].theObject.what == kGreaseRt) ||
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(masterObjects[whoLinked].theObject.what == kGreaseLf))
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{
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if (SetObjectState(thisRoomNumber,
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masterObjects[whoLinked].objectNum, 0, whoLinked))
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SpillGrease(masterObjects[whoLinked].dynaNum,
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masterObjects[whoLinked].hotNum);
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hotSpots[i].isOn = false;
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}
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}
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else if (action == kSwitchIt)
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{
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HandleSwitches(&hotSpots[i]);
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}
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else if (action == kTriggerIt)
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{
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ArmTrigger(&hotSpots[i]);
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}
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}
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}
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}
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}
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}
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if (nothingCollided) // the rubberband has hit nothing
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bandHitLast = -1; // so make note of that for the next time
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if (bands[who].hVel != 0)
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{
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if (bands[who].dest.bottom < theGlider.dest.top)
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collided = false;
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else if (bands[who].dest.top > theGlider.dest.bottom)
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collided = false;
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else if (bands[who].dest.right < theGlider.dest.left)
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collided = false;
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else if (bands[who].dest.left > theGlider.dest.right)
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collided = false;
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else
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collided = true;
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if (collided)
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{
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if ((!twoPlayerGame) || (!onePlayerLeft) || (playerDead == kPlayer2))
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{
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theGlider.hVel += (bands[who].hVel / 2);
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bands[who].hVel = 0;
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PlayPrioritySound(kHitWallSound, kHitWallPriority);
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}
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}
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if (twoPlayerGame)
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{
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if (bands[who].dest.bottom < theGlider2.dest.top)
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collided = false;
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else if (bands[who].dest.top > theGlider2.dest.bottom)
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collided = false;
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else if (bands[who].dest.right < theGlider2.dest.left)
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collided = false;
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else if (bands[who].dest.left > theGlider2.dest.right)
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collided = false;
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else
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collided = true;
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if (collided)
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{
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if ((!onePlayerLeft) || (playerDead == kPlayer1))
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{
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theGlider2.hVel += (bands[who].hVel / 2);
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bands[who].hVel = 0;
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PlayPrioritySound(kHitWallSound, kHitWallPriority);
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}
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}
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}
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}
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if ((bands[who].dest.left < kLeftWallLimit) ||
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(bands[who].dest.right > kRightWallLimit))
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{
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bands[who].mode = kKillBandMode;
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}
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else if (bands[who].dest.bottom > kFloorLimit)
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{
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bands[who].mode = kKillBandMode;
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}
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}
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//-------------------------------------------------------------- HandleBands
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void HandleBands (void)
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{
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Rect dest;
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short i, count;
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if (numBands == 0)
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return;
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for (i = 0; i < numBands; i++)
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{
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bands[i].mode++;
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if (bands[i].mode > 2)
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bands[i].mode = 0;
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bands[i].count++;
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if (bands[i].count >= kBandFallCount)
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{
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bands[i].vVel++;
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bands[i].count = 0;
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}
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dest = bands[i].dest;
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QOffsetRect(&dest, playOriginH, playOriginV);
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AddRectToWorkRects(&dest);
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bands[i].dest.left += bands[i].hVel;
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bands[i].dest.right += bands[i].hVel;
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bands[i].dest.top += bands[i].vVel;
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bands[i].dest.bottom += bands[i].vVel;
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CheckBandCollision(i);
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}
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count = 0;
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do
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{
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while (bands[count].mode == kKillBandMode)
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{
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bands[count].mode = 0;
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KillBand(count);
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}
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count++;
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}
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while (count < numBands);
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}
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//-------------------------------------------------------------- AddBand
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Boolean AddBand (gliderPtr thisGlider, short h, short v, Boolean direction)
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{
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if (numBands >= kMaxRubberBands)
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return (false);
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bands[numBands].mode = 0;
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bands[numBands].count = 0;
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if (thisGlider->tipped)
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bands[numBands].vVel = -2;
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else
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bands[numBands].vVel = 0;
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bands[numBands].dest.left = h - 8;
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bands[numBands].dest.right = h + 8;
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bands[numBands].dest.top = v - 3;
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bands[numBands].dest.bottom = v + 3;
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if (direction == kFaceLeft)
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{
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bands[numBands].dest.left -= 32;
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bands[numBands].dest.right -= 32;
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bands[numBands].hVel = -kRubberBandVelocity;
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}
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else
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{
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bands[numBands].dest.left += 32;
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bands[numBands].dest.right += 32;
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bands[numBands].hVel = kRubberBandVelocity;
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}
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thisGlider->hVel -= (bands[numBands].hVel / 2);
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numBands++;
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PlayPrioritySound(kFireBandSound, kFireBandPriority);
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return (true);
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}
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//-------------------------------------------------------------- KillBand
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void KillBand (short which)
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{
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short lastBand;
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lastBand = numBands - 1;
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if (which != lastBand)
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bands[which] = bands[lastBand];
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numBands--;
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}
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//-------------------------------------------------------------- KillAllBands
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void KillAllBands (void)
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{
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short i;
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for (i = 0; i < kMaxRubberBands; i++)
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{
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bands[i].mode = 0;
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}
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numBands = 0;
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}
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