source/enemy/nocto.cpp

@@ -0,0 +1,101 @@
+/*=========================================================================
+
+	nocto.cpp
+
+	Author:		CRB
+	Created: 
+	Project:	Spongebob
+	Purpose: 
+
+	Copyright (c) 2000 Climax Development Ltd
+
+===========================================================================*/
+
+#ifndef __ENEMY_NPC_H__
+#include "enemy\npc.h"
+#endif
+
+#ifndef __GAME_GAME_H__
+#include	"game\game.h"
+#endif
+
+#ifndef	__PLAYER_PLAYER_H__
+#include	"player\player.h"
+#endif
+
+
+void CNpc::processBabyOctopusMovementModifier( int _frames, s32 dist, s16 headingChange )
+{
+	s32 newX, newY;
+	s32 preShiftX, preShiftY;
+
+	u16 octopusData[11] = { 96, 192, 256, 256, 256, 192, 192, 192, 128, 128, 96 };
+
+	u32 dataPoint;
+
+	m_movementTimer += _frames;
+
+	if ( m_movementTimer > ( 3 * GameState::getOneSecondInFrames() ) )
+	{
+		m_movementTimer = 0;
+	}
+
+	dataPoint = 10 * m_movementTimer;
+
+	if ( dataPoint != 0 )
+	{
+		dataPoint /= ( 3 * GameState::getOneSecondInFrames() );
+	}
+
+	s32 resistance;
+	s32 absVelocity = abs( m_velocity );
+	s32 reqVelocity = dist;
+
+	resistance = _frames * NPC_JELLYFISH_RESISTANCE;
+
+	if ( absVelocity < resistance )
+	{
+		resistance = absVelocity;
+	}
+
+	if ( absVelocity != 0 )
+	{
+		resistance = -( resistance * m_velocity ) / absVelocity;
+	}
+	else
+	{
+		resistance = 0;
+	}
+
+	m_velocity += resistance;
+
+	reqVelocity = dist * octopusData[dataPoint];
+	reqVelocity >>= 8;
+	reqVelocity *= 128 + ( 128 - headingChange );
+	reqVelocity >>= 8;
+
+	s32 absReqVelocity = abs( reqVelocity );
+
+	if ( absReqVelocity > absVelocity )
+	{
+		m_velocity += reqVelocity >> 1;
+	}
+
+	preShiftX = ( m_velocity >> 8 ) * rcos( m_heading );
+	preShiftY = ( m_velocity >> 8 ) * rsin( m_heading );
+
+	newX = preShiftX >> 12;
+	if ( !newX && preShiftX )
+	{
+		newX = preShiftX / abs( preShiftX );
+	}
+
+	newY = preShiftY >> 12;
+	if ( !newY && preShiftY )
+	{
+		newY = preShiftY / abs( preShiftY );
+	}
+
+	Pos.vx += newX;
+	Pos.vy += newY;
+}