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Charles
parent
6b8d4291c2
commit
979a8ca669
4 changed files with 162 additions and 125 deletions
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@ -130,13 +130,26 @@ void CThingManager::thinkAllThings(int _frames)
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thing2=s_thingLists[CThing::TYPE_PLAYER];
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while(thing1&&thing2)
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{
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thing1->removeAllChild();
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if(thing1->canCollide()&&
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thing1->checkCollisionAgainst(thing2))
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//if ( !thing1->hasChild( thing2 ) )
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{
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thing1->addChild( thing2 );
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thing1->collidedWith(thing2);
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thing1->removeAllChild();
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if(thing1->canCollide()&&
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thing1->checkCollisionAgainst(thing2))
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{
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thing1->addChild( thing2 );
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thing1->collidedWith(thing2);
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}
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}
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/*else
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{
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DVECTOR thatPos = thing2->getPos();
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thatPos.vy = thing1->getNewYPos( thing2 );
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thing2->setNewCollidedPos( thatPos );
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thing1->collidedWith(thing2);
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}*/
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thing1=thing1->m_nextThing;
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}
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@ -297,7 +310,6 @@ void CThing::init()
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setCollisionSize(20,20); // Some temporary defaults.. (pkg)
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setCollisionCentreOffset(0,0);
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m_collisionAngle = 0;
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m_collisionStickyBoundary = 0;
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m_centreCollision = false;
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}
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@ -510,6 +522,29 @@ CThing *List=Next;
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Next=NULL;
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}
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/*----------------------------------------------------------------------
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Function:
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Purpose:
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Params:
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Returns:
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---------------------------------------------------------------------- */
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bool CThing::hasChild(CThing *Child)
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{
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CThing *nextChild = Next;
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while( nextChild )
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{
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if ( nextChild == Child )
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{
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return( true );
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}
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nextChild = nextChild->Next;
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}
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return( false );
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}
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/*----------------------------------------------------------------------
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Function:
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Purpose:
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@ -546,6 +581,119 @@ void CThing::updateCollisionArea()
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m_collisionArea.y2=m_collisionArea.y1+m_collisionSize.vy;
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}
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/*----------------------------------------------------------------------
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Function:
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Purpose:
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Params:
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Returns:
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---------------------------------------------------------------------- */
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s32 CThing::getNewYPos(CThing *_thisThing)
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{
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CRECT thisRect;
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DVECTOR thatPos = _thisThing->getPos();
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thisRect = getCollisionArea();
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// 'render' collision box at correct angle
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SVECTOR testPointsNonRel[4];
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VECTOR testPoints[4];
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testPointsNonRel[0].vx = thisRect.x1 - Pos.vx;
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testPointsNonRel[0].vy = thisRect.y1 - Pos.vy;
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testPointsNonRel[1].vx = thisRect.x2 - Pos.vx;
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testPointsNonRel[1].vy = thisRect.y1 - Pos.vy;
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testPointsNonRel[2].vx = thisRect.x2 - Pos.vx;
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testPointsNonRel[2].vy = thisRect.y2 - Pos.vy;
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testPointsNonRel[3].vx = thisRect.x1 - Pos.vx;
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testPointsNonRel[3].vy = thisRect.y2 - Pos.vy;
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MATRIX mtx;
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SetIdentNoTrans(&mtx );
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RotMatrixZ( m_collisionAngle, &mtx );
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int i;
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for ( i = 0 ; i < 4 ; i++ )
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{
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ApplyMatrix( &mtx, &testPointsNonRel[i], &testPoints[i] );
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testPoints[i].vx += Pos.vx;
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testPoints[i].vy += Pos.vy;
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}
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// now find the highest y pos
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// first set highestY to lowest of the four points
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s16 highestY = testPoints[0].vy;
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for ( i = 1 ; i < 4 ; i++ )
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{
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if ( testPoints[i].vy > highestY ) // remember y is inverted
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{
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highestY = testPoints[i].vy;
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}
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}
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for ( i = 0 ; i < 4 ; i++ )
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{
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int j = i + 1;
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j %= 4;
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VECTOR highestX, lowestX;
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if ( testPoints[i].vx < testPoints[j].vx )
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{
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lowestX = testPoints[i];
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highestX = testPoints[j];
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}
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else
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{
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lowestX = testPoints[j];
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highestX = testPoints[i];
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}
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if ( highestX.vx == lowestX.vx )
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{
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// have to compare heights of both points to get highest
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if ( lowestX.vy < highestY )
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{
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highestY = lowestX.vy;
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}
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if ( highestX.vy < highestY )
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{
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highestY = highestX.vy;
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}
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}
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else
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{
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if ( thatPos.vx >= lowestX.vx && thatPos.vx <= highestX.vx )
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{
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// current position is above or below this line
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s16 testY;
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testY = lowestX.vy + ( ( thatPos.vx - lowestX.vx ) * ( highestX.vy - lowestX.vy ) ) /
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( highestX.vx - lowestX.vx );
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if ( testY < highestY )
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{
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highestY = testY;
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}
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}
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}
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}
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return( highestY );
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}
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/*----------------------------------------------------------------------
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Function:
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Purpose:
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@ -574,11 +722,6 @@ int CThing::checkCollisionAgainst(CThing *_thisThing)
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// ensure user 'sticks' to platform whilst it is moving along
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thisRect.x1 -= m_collisionStickyBoundary;
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thisRect.y1 -= m_collisionStickyBoundary;
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thisRect.x2 += m_collisionStickyBoundary;
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thisRect.y2 += m_collisionStickyBoundary;
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thatRect=_thisThing->getCollisionArea();
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// rotate thatPos opposite way to this CThing's collision angle, so that we can regard them both as being at 0 rotation
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@ -633,105 +776,9 @@ int CThing::checkCollisionAgainst(CThing *_thisThing)
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if ( ( newPos.vx >= thisRect.x1 && newPos.vx <= thisRect.x2 ) &&
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( newPos.vy >= thisRect.y1 && newPos.vy <= thisRect.y2 ) )
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{
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thisRect=getCollisionArea();
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_thisThing->setCentreCollision( true );
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// 'render' collision box at correct angle
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SVECTOR testPointsNonRel[4];
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VECTOR testPoints[4];
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testPointsNonRel[0].vx = thisRect.x1 - Pos.vx;
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testPointsNonRel[0].vy = thisRect.y1 - Pos.vy;
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testPointsNonRel[1].vx = thisRect.x2 - Pos.vx;
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testPointsNonRel[1].vy = thisRect.y1 - Pos.vy;
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testPointsNonRel[2].vx = thisRect.x2 - Pos.vx;
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testPointsNonRel[2].vy = thisRect.y2 - Pos.vy;
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testPointsNonRel[3].vx = thisRect.x1 - Pos.vx;
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testPointsNonRel[3].vy = thisRect.y2 - Pos.vy;
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SetIdentNoTrans(&mtx );
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RotMatrixZ( m_collisionAngle, &mtx );
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int i;
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for ( i = 0 ; i < 4 ; i++ )
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{
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ApplyMatrix( &mtx, &testPointsNonRel[i], &testPoints[i] );
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testPoints[i].vx += Pos.vx;
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testPoints[i].vy += Pos.vy;
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}
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// now find the highest y pos
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// first set highestY to lowest of the four points
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s16 highestY = testPoints[0].vy;
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for ( i = 1 ; i < 4 ; i++ )
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{
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if ( testPoints[i].vy > highestY ) // remember y is inverted
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{
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highestY = testPoints[i].vy;
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}
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}
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for ( i = 0 ; i < 4 ; i++ )
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{
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int j = i + 1;
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j %= 4;
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VECTOR highestX, lowestX;
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if ( testPoints[i].vx < testPoints[j].vx )
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{
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lowestX = testPoints[i];
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highestX = testPoints[j];
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}
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else
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{
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lowestX = testPoints[j];
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highestX = testPoints[i];
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}
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if ( highestX.vx == lowestX.vx )
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{
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// have to compare heights of both points to get highest
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if ( lowestX.vy < highestY )
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{
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highestY = lowestX.vy;
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}
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if ( highestX.vy < highestY )
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{
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highestY = highestX.vy;
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}
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}
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else
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{
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if ( thatPos.vx >= lowestX.vx && thatPos.vx <= highestX.vx )
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{
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// current position is above or below this line
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s16 testY;
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testY = lowestX.vy + ( ( thatPos.vx - lowestX.vx ) * ( highestX.vy - lowestX.vy ) ) /
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( highestX.vx - lowestX.vx );
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if ( testY < highestY )
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{
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highestY = testY;
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}
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}
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}
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}
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thatPos.vy = highestY;
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thatPos.vy = getNewYPos( _thisThing );
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_thisThing->setNewCollidedPos( thatPos );
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}
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