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Charles 2001-01-22 22:24:53 +00:00
parent dd7ab2aee8
commit 598a1b7e33
9 changed files with 328 additions and 51 deletions
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174
source/projectl/projectl.cpp
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@ -39,6 +39,10 @@
#include "game\game.h"
#endif
#ifndef __PLAYER_PLAYER_H__
#include "player\player.h"
#endif
/*****************************************************************************/
@ -49,6 +53,10 @@ void CProjectile::init()
m_heading = 0;
m_lifetime = GameState::getOneSecondInFrames() * 2;
m_movementType = PROJECTILE_DUMBFIRE;
m_lifetimeType = PROJECTILE_FINITE_LIFE;
m_state = PROJECTILE_ATTACK;
m_turnSpeed = 256;
}
void CProjectile::init( DVECTOR initPos, s16 initHeading )
@ -59,22 +67,172 @@ void CProjectile::init( DVECTOR initPos, s16 initHeading )
Pos = initPos;
}
void CProjectile::init( DVECTOR initPos, s16 initHeading, PROJECTILE_MOVEMENT_TYPE initMoveType, PROJECTILE_LIFETIME_TYPE initLifeType )
{
init( initPos, initHeading );
m_movementType = initMoveType;
m_lifetimeType = initLifeType;
}
void CProjectile::shutdown()
{
m_spriteBank->dump(); delete m_spriteBank;
}
bool CProjectile::processTargetSeek( int _frames, DVECTOR targetPos )
{
s32 moveX = 0, moveY = 0;
s16 moveDist = 0;
s32 moveVel = 0;
s32 xDist, yDist;
s32 xDistSqr, yDistSqr;
xDist = targetPos.vx - this->Pos.vx;
xDistSqr = xDist * xDist;
yDist = targetPos.vy - this->Pos.vy;
yDistSqr = yDist * yDist;
//if ( xDistSqr + yDistSqr > 22500 )
//{
//this->m_controlFunc = NPC_CONTROL_MOVEMENT;
//}
//else
{
s16 headingToTarget = ratan2( yDist, xDist );
s16 maxTurnRate = m_turnSpeed;
s16 decDir, incDir;
decDir = m_heading - headingToTarget;
if ( decDir < 0 )
{
decDir += ONE;
}
incDir = headingToTarget - m_heading;
if ( incDir < 0 )
{
incDir += ONE;
}
if ( decDir < incDir )
{
moveDist = -decDir;
}
else
{
moveDist = incDir;
}
if ( moveDist < -maxTurnRate )
{
moveDist = -maxTurnRate;
}
else if ( moveDist > maxTurnRate )
{
moveDist = maxTurnRate;
}
m_heading += moveDist;
m_heading = m_heading % ONE;
s32 preShiftX = _frames * 3 * rcos( m_heading );
s32 preShiftY = _frames * 3 * rsin( m_heading );
moveX = preShiftX >> 12;
if ( !moveX && preShiftX )
{
moveX = preShiftX / abs( preShiftX );
}
moveY = preShiftY >> 12;
if ( !moveY && preShiftY )
{
moveY = preShiftY / abs( preShiftY );
}
Pos.vx += moveX;
Pos.vy += moveY;
}
xDist = targetPos.vx - this->Pos.vx;
xDistSqr = xDist * xDist;
yDist = targetPos.vy - this->Pos.vy;
yDistSqr = yDist * yDist;
if ( xDistSqr + yDistSqr < 100 )
{
return( true );
}
else
{
return( false );
}
}
void CProjectile::think(int _frames)
{
Pos.vx += ( _frames * 3 * rcos( m_heading ) ) >> 12;
Pos.vy += ( _frames * 3 * rsin( m_heading ) ) >> 12;
m_lifetime -= _frames;
if ( m_lifetime <= 0 )
switch( m_movementType )
{
shutdown();
delete this;
case PROJECTILE_USER_SEEK:
{
switch( m_state )
{
case PROJECTILE_RETURN:
{
if ( processTargetSeek( _frames, Parent->getPos() ) )
{
Parent->processEvent( PROJECTILE_RETURNED_TO_SOURCE_EVENT, this );
}
break;
}
case PROJECTILE_ATTACK:
default:
{
CPlayer *player = GameScene.getPlayer();
DVECTOR playerPos = player->getPos();
if ( processTargetSeek( _frames, playerPos ) )
{
m_state = PROJECTILE_RETURN;
}
break;
}
}
break;
}
case PROJECTILE_DUMBFIRE:
default:
{
Pos.vx += ( _frames * 3 * rcos( m_heading ) ) >> 12;
Pos.vy += ( _frames * 3 * rsin( m_heading ) ) >> 12;
break;
}
}
if ( m_lifetimeType == PROJECTILE_FINITE_LIFE )
{
m_lifetime -= _frames;
if ( m_lifetime <= 0 )
{
shutdown();
delete this;
}
}
}