tpathlinetype.h

symbian 的一个 二维飞行游戏 源码 及相关技术文章

// Copyright 2002 Kenneth Guy,
// 
// TPathLineType.h

#ifndef _TPATHLINETYPE_H_
#define _TPATHLINETYPE_H_


/** \file TPathLineType.h

  TPathLineType header file.
 */


/** Commands for path following bad guys.

   Defines commands that modify a TBadGuy object each time
   the Move() method is called on a TBadGuy object with the
   TBadGuyFlags::EPathMove flag set.

   Path data is a series of 4 TInt16s the first TInt16 is the
   TPathLineType, the second the offset of the next command
   to process (0 = repeat this instruction, 1=next instruction
   -1 = previous instruction etc). The third and fourth are
   parameters to the command.
*/


enum TPathLineType {
  // specials
  EPathLineEnd, /**< Marks the end of the path data. Only used by level generation tools */                     
  EPathLineStart, /**< Marks the start of each set of path data. Only used by level generation tools */                     

  EPathLineClone, /**< new bad guy. 3rd operand gives path offset for the next command of new bad guy.*/

  //movement
  EPathLineMoveBy, /**< move by x,y pixels given by 3rd and 4th operands*/
  EPathLineMoveTo, /**< move to x,y pixels given by 3rd and 4th operands*/
  EPathLineMoveStepTo,/**< move to x,y in steps of xvel,yvel. If velocity is negative is will move away from position.  X,Y given by 3rd and 4th operands*/
  EPathLineMoveSimple, /**< Simple movement. Based on iFlags, iXVel and iYVel */

  // conditionals

  EPathLineIfXVelLess, /**< take 3rd operand if xvel < 4th operand else take 2nd.*/
  EPathLineIfXVelGreater, /**< take 3rd operand if xvel > 4th operand else take 2nd.*/
  EPathLineIfXVelEqual, /**< take 3rd operand if xvel = 4th operand else take 2nd.*/
  EPathLineIfYVelLess, /**< take 3rd operand if yvel < 4th operand else take 2nd.*/
  EPathLineIfYVelGreater, /**< take 3rd operand if yvel > 4th operand else take 2nd.*/
  EPathLineIfYVelEqual, /**< take 3rd operand if yvel = 4th operand else take 2nd.*/

  EPathLineIfXLess, /**< take 3rd operand if xpos < 4th operand else take 2nd.*/
  EPathLineIfXGreater, /**< take 3rd operand if xpos > 4th operand else take 2nd.*/
  EPathLineIfXEqual, /**< take 3rd operand if xpos = 4th operand else take 2nd.*/
  EPathLineIfYLess, /**< take 3rd operand if ypos < 4th operand else take 2nd.*/
  EPathLineIfYGreater, /**< take 3rd operand if ypos > 4th operand else take 2nd.*/
  EPathLineIfYEqual, /**< take 3rd operand if ypos = 4th operand else take 2nd.*/

  EPathLineIfHealthLess, /**< take 3rd operand if health < 4th operand else take 2nd.*/
  EPathLineIfHealthGreater, /**< take 3rd operand if health > 4th operand else take 2nd.*/
  EPathLineIfHealthEqual, /**< take 3rd operand if health = 4th operand else take 2nd.*/


  EPathLineIfCounterLess, /**< take 3rd operand if counter < 4th operand else take 2nd.*/
  EPathLineIfCounterGreater, /**< take 3rd operand if counter > 4th operand else take 2nd.*/
  EPathLineIfCounterEqual, /**< take 3rd operand if counter = 4th operand else take 2nd.*/

  // setting

  EPathLineSetPoints, /**< Set the score for this bad guy. 3rd operand = score*/
  EPathLineSetId,  /**< Set the id of bad guy. 3rd operand = id*/
  EPathLineSetHealth, /**< Set the health of bad guy. 3rd operand = health*/
  EPathLineAddHealth, /**< Add to the health of bad guy. health+=3rd operand*/
  EPathLineSetCounter, /**< Set the counter of bad guy. 3rd operand = counter*/
  EPathLineAddCounter, /**< Add to the counter of bad guy. counter += 3rd operand*/
  EPathLineSetVelocity, /**< Set the velocity. 3rd operand = xvel, 4th = yvel*/
  EPathLineAddVelocity,/**< Add to velocitty. xvel+=3rd operand, yvel+=4th*/
  EPathLineSetSprite, /**< Set the sprite used for this bad guy. 3rd operand is the sprite no.*/
  EPathLineSetClearFlags, /**< Set and clear flags from TBadGuy::iFlags. Set the bits in the 3rd operand and clear the bits in the 4th */
};


#endif