source/enemy/ngeneric.cpp

@@ -0,0 +1,114 @@
+/*=========================================================================
+
+	ngeneric.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::processCloseGenericUserSeek( int _frames )
+{
+	s32 moveX = 0, moveY = 0;
+
+	s16 moveDist = 0;
+
+	s32 moveVel = 0;
+
+	CPlayer *player = GameScene.getPlayer();
+
+	DVECTOR playerPos = player->getPos();
+
+	s32 xDist, yDist;
+	s32 xDistSqr, yDistSqr;
+
+	xDist = playerPos.vx - this->Pos.vx;
+	xDistSqr = xDist * xDist;
+
+	yDist = playerPos.vy - this->Pos.vy;
+	yDistSqr = yDist * yDist;
+
+	//if ( xDistSqr + yDistSqr > 22500 )
+	//{
+		//this->m_controlFunc = NPC_CONTROL_MOVEMENT;
+	//}
+	//else
+	{
+		bool pathComplete;
+
+		s16 headingToPlayer = ratan2( yDist, xDist );
+		s16 maxTurnRate = m_data[m_type].turnSpeed;
+		s16 decDir, incDir;
+
+		decDir = m_heading - headingToPlayer;
+
+		if ( decDir < 0 )
+		{
+			decDir += ONE;
+		}
+
+		incDir = headingToPlayer - 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 * m_data[m_type].speed * rcos( m_heading );
+		s32 preShiftY = _frames * m_data[m_type].speed * 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;
+	}
+}