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This commit is contained in:
Charles 2001-06-21 20:10:19 +00:00
parent 3f2ebeb556
commit af42f43345
7 changed files with 226 additions and 4 deletions
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200
source/enemy/nssnake.cpp
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@ -166,6 +166,7 @@ void CNpcSeaSnakeEnemy::postInit()
m_movementTimer = 2 * GameState::getOneSecondInFrames();
m_collTimer = 0;
m_meterOn=false;
m_turnDir = 0;
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
@ -249,7 +250,161 @@ void CNpcSeaSnakeEnemy::processMovement( int _frames )
}
}
processGenericFixedPathMove( _frames, &moveX, &moveY, &moveVel, &moveDist );
switch( m_turnDir )
{
case NPC_SEA_SNAKE_CIRCLE_CLOCKWISE:
{
m_circleHeading += m_data[m_type].turnSpeed;
if ( m_circleHeading > 4096 )
{
m_circleHeading = 0;
m_turnDir = 0;
}
m_heading = ( m_origHeading + m_circleHeading ) & 4095;
s32 preShiftX = _frames * m_speed * rcos( m_heading );
s32 preShiftY = _frames * m_speed * rsin( m_heading );
s32 moveX = preShiftX >> 12;
if ( !moveX && preShiftX )
{
moveX = preShiftX / abs( preShiftX );
}
s32 moveY = preShiftY >> 12;
if ( !moveY && preShiftY )
{
moveY = preShiftY / abs( preShiftY );
}
Pos.vx += moveX;
Pos.vy += moveY;
break;
}
case NPC_SEA_SNAKE_CIRCLE_ANTICLOCKWISE:
{
m_circleHeading -= m_data[m_type].turnSpeed;
if ( m_circleHeading < -4096 )
{
m_circleHeading = 0;
m_turnDir = 0;
}
m_heading = ( m_origHeading + m_circleHeading ) & 4095;
s32 preShiftX = _frames * m_speed * rcos( m_heading );
s32 preShiftY = _frames * m_speed * rsin( m_heading );
s32 moveX = preShiftX >> 12;
if ( !moveX && preShiftX )
{
moveX = preShiftX / abs( preShiftX );
}
s32 moveY = preShiftY >> 12;
if ( !moveY && preShiftY )
{
moveY = preShiftY / abs( preShiftY );
}
Pos.vx += moveX;
Pos.vy += moveY;
break;
}
default:
{
DVECTOR waypointPos;
m_npcPath.getCurrentWaypointPos( &waypointPos );
waypointPos.vy -= 8;
if ( CGameScene::getCollision()->getHeightFromGround( waypointPos.vx, waypointPos.vy ) < 0 )
{
// waypoint is either start or end waypoint
s32 distX, distY;
distX = waypointPos.vx - Pos.vx;
distY = waypointPos.vy - Pos.vy;
if( !distX && !distY )
{
if ( isSnakeStopped() )
{
m_npcPath.incPath();
m_npcPath.getCurrentWaypointPos( &waypointPos );
waypointPos.vy -= 8;
if ( CGameScene::getCollision()->getHeightFromGround( waypointPos.vx, waypointPos.vy ) < 0 )
{
// if next waypoint is ALSO a start/end waypoint, teleport directly to it
moveEntireSnake( waypointPos );
oldPos.vx = waypointPos.vx;
oldPos.vy = waypointPos.vy;
// increment path
m_npcPath.incPath();
// point snake in correct direction
m_npcPath.getCurrentWaypointPos( &waypointPos );
m_heading = ratan2( waypointPos.vy - Pos.vy, waypointPos.vx - Pos.vx ) & 4095;
}
}
}
else
{
processGenericGotoTarget( _frames, distX, distY, m_speed );
}
}
else
{
if ( processGenericFixedPathMove( _frames, &moveX, &moveY, &moveVel, &moveDist ) )
{
// path has changed
DVECTOR newWaypointPos;
m_npcPath.getCurrentWaypointPos( &newWaypointPos );
newWaypointPos.vy -= 8;
if ( newWaypointPos.vy == waypointPos.vy )
{
int testDir = newWaypointPos.vx - waypointPos.vx;
if ( testDir > 0 && testDir <= 16 )
{
// clockwise
m_turnDir = NPC_SEA_SNAKE_CIRCLE_CLOCKWISE;
m_circleHeading = 0;
m_origHeading = m_heading;
m_npcPath.incPath();
}
else if ( testDir < 0 && testDir >= -16 )
{
// anticlockwise
m_turnDir = NPC_SEA_SNAKE_CIRCLE_ANTICLOCKWISE;
m_circleHeading = 0;
m_origHeading = m_heading;
m_npcPath.incPath();
}
}
}
}
break;
}
}
Pos.vx += moveX;
Pos.vy += moveY;
@ -751,3 +906,46 @@ s32 CNpcSeaSnakeEnemy::getFrameShift( int _frames )
{
return( ( _frames << 8 ) >> 3 );
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
u8 CNpcSeaSnakeEnemy::isSnakeStopped()
{
if ( !m_segmentCount )
{
return( true );
}
DVECTOR tailPos = m_segmentArray[m_segmentCount - 1].getPos();
if ( tailPos.vx == Pos.vx && tailPos.vy == Pos.vy )
{
return( true );
}
else
{
return( false );
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void CNpcSeaSnakeEnemy::moveEntireSnake( DVECTOR newPos )
{
Pos.vx = newPos.vx;
Pos.vy = newPos.vy;
int segmentCount;
for ( segmentCount = 0 ; segmentCount < m_segmentCount ; segmentCount++ )
{
m_segmentArray[segmentCount].setPos( Pos );
}
s16 maxArraySize = NPC_SEA_SNAKE_LENGTH * NPC_SEA_SNAKE_SPACING;
for ( int histLength = 0 ; histLength < maxArraySize ; histLength++ )
{
m_positionHistoryArray[histLength].pos = Pos;
}
}