mob.h File Reference

#include "item.h"
#include "level.h"
#include "utils.h"
#include "list.h"

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Data Structures
struct	Mob

Typedefs
typedef struct Mob	Mob

Functions
bool	move_mob (struct Mob *mob, unsigned int x, unsigned int y)
bool	move_mob_relative (struct Mob *mob, int xdiff, int ydiff)
bool	move_mob_level (Mob *mob, bool toprev)
bool	damage_mob (struct Mob *mob, unsigned int amount)
void	attack_mob (Mob *attacker, Mob *defender)
struct Mob *	kill_mob (struct Mob *mob)
bool	can_see_point (struct Level *level, unsigned int x0, unsigned int y0, unsigned int x, unsigned int y)
bool	can_see (struct Mob *mob, unsigned int x, unsigned int y)
bool	can_see_other (struct Mob *moba, struct Mob *mobb)
void	simple_enemy_turn (Mob *enemy)

Typedef Documentation

typedef struct Mob Mob

A mob is something which roams around the world, they are tied to a level, and all the mobs in one level form a doubly-linked list. There are a couple of callbacks associated with them to determine what happens in certain situations.

Function Documentation

void attack_mob	(	Mob *	attacker,
		Mob *	defender
	)

Attack a mob, modified by the weapon of the attacker and the armour of the defender.

Parameters

attacker	The mob doing the attacking.
defender	The mob being attacked.

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bool can_see	(	Mob *	mob,
		unsigned int	x,
		unsigned int	y
	)

Determine if a mob can see the given point.

Note: as this will be primarily used to render the level, a better version might be to operate on a 2d array of three-state variables ("visible", "blocked", and "unknown"), and just iterate the algorithm with different starting points until every point is known. This would avoid the need to check each individual point, possibly duplicating work.

Parameters

mob	The mob
x	The target X coordinate
y	The target Y coordinate

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bool can_see_other	(	Mob *	moba,
		Mob *	mobb
	)

Wrapper for can_see, to determine if a mob can see another mob.

Parameters

moba	One of the mobs
mobb	The other. It really doesn't matter which way around they are.

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bool can_see_point	(	Level *	level,
		unsigned int	x0,
		unsigned int	y0,
		unsigned int	x,
		unsigned int	y
	)

Determine if one point can be seen from another. All points are visible unless there is a wall in the way. This uses Bresenham's line algorithm to determine line-of-sight.

Parameters

level	The level to check
x0	The starting X
y0	The starting Y
x	The target X
y	The target Y

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bool damage_mob	(	Mob *	mob,
		unsigned int	damage
	)

Damage a mob.

Parameters

mob	Entity to damage.
damage	Amount of damage to apply to the mob.

Returns

If this killed the mob, a mob is dead if its health drops to zero or below.

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struct Mob* kill_mob

(

Mob *

mob

)

Kill a mob - free it, and remove it from the lists.

Parameters

mob	The mob to kill

Returns

The next mob in the list, or NULL

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bool move_mob	(	Mob *	mob,
		unsigned int	x,
		unsigned int	y
	)

Move the given mob to the new coordinates.

Parameters

mob	Entity to move.
x	Target x position.
y	Target y position.

Returns

false if the given space can't be moved into.

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bool move_mob_level	(	Mob *	mob,
		bool	toprev
	)

Moves the given mod to the next or previous level.

Parameters

mob	Mob to move.
toprev	Determines which direction the movement is in. If true, the movement is to the previous level, otherwise to the next.

Returns

If the mob moved sucessfully.

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bool move_mob_relative	(	Mob *	mob,
		int	xdiff,
		int	ydiff
	)

Move a mob by a relative position

Parameters

mob	Entity to move.
xdiff	x-coordinate difference.
ydiff	y-coordinate difference.

Returns

If the mob was moved successfully.

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void simple_enemy_turn

(

Mob *

enemy

)

A very simple enemy: move towards the player, and damage them if adjacent.

Parameters

enemy

Entity to move.

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