EnemyCar Class Reference

GameObject that chases the player around the maze. More...

#include <EnemyCar.h>

Inheritance diagram for EnemyCar:

List of all members.

Public Member Functions
	EnemyCar (double x, double y)
	Creates an EnemyCar at the given coordinates.
void	update (const Maze &maze, const list< PlayerCar > &players, const list< Rock > &rocks)
	Processes one frame's worth of activity for the object, called every frame.
void	crash ()
	Function that is called when an EnemyCar crashes into a PlayerCar.
void	blind ()
	Function that is called when an EnemyCar drives into a Smokescreen.
Private Types
enum	States { BLINDED, CHASING }
	States that define how the EnemyCar's AI should behave. More...
Private Member Functions
void	checkFacing (const Maze &maze, double chasingX, double chasingY, const list< Rock > &rocks)
	Updates the direction that the EnemyCar is facing, if neccesary.
bool	rockAtLocation (double x, double y, const list< Rock > &rocks)
	Iterates through a list of Rocks and determines if moving to a given position would result in a collision.
Private Attributes
States	_state
	The state that the object is currently in.
double	_targetX
	The x coordinate that the EnemyCar is driving towards.
double	_targetY
	The y coordinate that the EnemyCar is driving towards.

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Detailed Description

GameObject that chases the player around the maze.

Attempts to collide with the player, causing the player to lose.

Author:

Justin Wernick

David Schneider

Definition at line 21 of file EnemyCar.h.

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Member Enumeration Documentation

enum EnemyCar::States [private]

States that define how the EnemyCar's AI should behave.

This would need to be expanded to include more states in order to make the enemies appear smarter.

Enumerator:

BLINDED	The EnemyCar can not see, and so does not move.
CHASING	The EnemyCar tries to drive to the block that the player is currently on.

Definition at line 61 of file EnemyCar.h.

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Constructor & Destructor Documentation

EnemyCar::EnemyCar	(	double	x,
		double	y
	)

Creates an EnemyCar at the given coordinates.

Parameters:

[in]	x	The x coordinate of the EnemyCar's initial position.
[in]	y	The y coordinate of the EnemyCar's initial position.

Definition at line 3 of file EnemyCar.cpp.

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Member Function Documentation

void EnemyCar::blind

(

)

Function that is called when an EnemyCar drives into a Smokescreen.

Definition at line 100 of file EnemyCar.cpp.

void EnemyCar::checkFacing	(	const Maze &	maze,
		double	chasingX,
		double	chasingY,
		const list< Rock > &	rocks
	)		[private]

Updates the direction that the EnemyCar is facing, if neccesary.

The facing is only changed once the current _targetX and _targetY are reached. After that, a facing is chosen that points into an empty block (no maze walls or rocks) that is closest to the chasing x and y using a straight line. This results in the enemy not always taking the shortest route, but it makes it possible to escape enemies. _targetX and _targetY are updated to one block in the new facing direction. The enemy may only turn around and head backwards if there is no other options, so once the enemy starts driving down narrow a path it will continue to the end of the path.

Parameters:

[in]	maze	The maze that confines the EnemyCar's movements.
[in]	chasingX	The x coordinate that the EnemyCar is ultimately trying to reach.
[in]	chasingY	The y coordinate that the EnemyCar is ultimately trying to reach.
[in]	rocks	The Rocks that the EnemyCar needs to avoid.

Definition at line 26 of file EnemyCar.cpp.

void EnemyCar::crash

(

)

Function that is called when an EnemyCar crashes into a PlayerCar.

Definition at line 95 of file EnemyCar.cpp.

bool EnemyCar::rockAtLocation	(	double	x,
		double	y,
		const list< Rock > &	rocks
	)		[private]

Iterates through a list of Rocks and determines if moving to a given position would result in a collision.

Parameters:

[in]	x	The potential new x coordinate.
[in]	y	The potential new y coordinate.
[in]	rocks	The Rocks that are checked for a collision at x and y.

Definition at line 86 of file EnemyCar.cpp.

void EnemyCar::update	(	const Maze &	maze,
		const list< PlayerCar > &	players,
		const list< Rock > &	rocks
	)

Processes one frame's worth of activity for the object, called every frame.

Primarily adjusts the facing if neccesary and then moves using the inhereted move function.

Parameters:

maze	The maze that confines the EnemyCar's movements.
players	The list of PlayerCars that the EnemyCar can chase.
rocks	The list of Rocks that need to be avoided.

Definition at line 11 of file EnemyCar.cpp.

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Member Data Documentation

States EnemyCar::_state [private]

The state that the object is currently in.

Definition at line 66 of file EnemyCar.h.

double EnemyCar::_targetX [private]

The x coordinate that the EnemyCar is driving towards.

Definition at line 67 of file EnemyCar.h.

double EnemyCar::_targetY [private]

The y coordinate that the EnemyCar is driving towards.

Definition at line 68 of file EnemyCar.h.

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The documentation for this class was generated from the following files:

• source/logic/EnemyCar.h
• source/logic/EnemyCar.cpp