enemy.h File Reference

This file contains the definition of the EnemyData struct and its functions. More...

#include <SDL.h>
#include <vec2.h>
#include <colliders.h>
#include <animation.h>
#include <timer.h>
#include <particle_emitterpresets.h>
#include <chunks.h>

Go to the source code of this file.

Classes
struct	EnemyState
	Enemy state structure. More...
struct	EnemyStats
	Enemy statistics structure. More...
struct	EnemyResources
	Enemy resources structure. More...
struct	EnemyData
	Enemy data structure. More...

Macros
#define	ENEMY_MAX   100

Typedefs
typedef struct EnemyState	EnemyState
	Enemy state structure.
typedef struct EnemyStats	EnemyStats
	Enemy statistics structure.
typedef struct EnemyResources	EnemyResources
	Enemy resources structure.
typedef struct EnemyData	EnemyData
	Forward declaration of EnemyData structure.

Enumerations
enum	EnemyType {   ENEMY_TYPE_PROXY , ENEMY_TYPE_ECHO , ENEMY_TYPE_KAMIKAZE , ENEMY_TYPE_RECHARGE ,   ENEMY_TYPE_VANTAGE , ENEMY_TYPE_RADIUS , ENEMY_TYPE_SABOT , ENEMY_TYPE_TACTICIAN ,   ENEMY_TYPE_JUGGERNAUT , ENEMY_TYPE_SENTRY , ENEMY_TYPE_LIBET , ENEMY_TYPE_COUNT }
	Enemy type enumeration. More...

Functions
void	Enemy_Init ()
	[Start] Initializes the enemy system
void	Enemy_Update ()
	[PostUpdate] Updates all active enemies in the game.
void	Enemy_HandleSpawning (EnemyData *enemy)
	[Utility] Manages the spawning process for an enemy.
void	Enemy_HandleMovement (EnemyData *enemy)
	[Utility] Handles enemy movement physics and velocity calculations.
void	Enemy_TryMove (EnemyData *enemy, Vec2 movement)
	[Utility] Attempts to move the enemy by the given vector, checking for collisions.
void	Enemy_HandleDeath (EnemyData *enemy)
	[Utility] Handles the death of an enemy.
void	EnemyManager_Update ()
	[PostUpdate] Updates the enemy management system
void	EnemyManager_RenderClearText ()
void	Enemy_Render ()
	[Render] Renders all active enemies
void	Enemy_Destroy ()
void	Enemy_Spawn (EnemyData data, Vec2 position)
	[Utility] Spawns an enemy of the given type at the specified position
void	Enemy_TakeDamage (EnemyData *enemy, int damage)
	[Utility] Applies damage to an enemy
void	Enemy_CreateHealthText (Vec2 position, int damage)
void	Enemy_UpdateHealthTexts ()
void	Enemy_RenderHealthTexts ()
int	EnemyManage_CountEnemyInChunk (EnvironmentChunk *chunk)
	[Utility] Counts the number of active enemies in a specific chunk

Variables
ParticleEmitter *	TacticianBuffEffectEmitter
EnemyData *	enemyList [ENEMY_TYPE_COUNT]
EnemyData	enemies [ENEMY_MAX]
	Array of enemies.
SDL_Texture *	Enemy_spawnIndicator
	Texture for enemy spawn indicator.

Detailed Description

This file contains the definition of the EnemyData struct and its functions.

Author

Mango

Date

2025-03-18

Macro Definition Documentation

ENEMY_MAX

#define ENEMY_MAX   100

Typedef Documentation

EnemyData

typedef struct EnemyData EnemyData

Forward declaration of EnemyData structure.

Enemy data structure.

Complete definition of an enemy, including type, state, stats, resources, animation data, and function pointers for behavior

EnemyResources

typedef struct EnemyResources EnemyResources

Enemy resources structure.

Contains pointers to runtime resources needed by the enemy

EnemyState

typedef struct EnemyState EnemyState

Enemy state structure.

Contains the current runtime state information for an enemy, including position, movement, collision, and health status

EnemyStats

typedef struct EnemyStats EnemyStats

Enemy statistics structure.

Contains the configuration values that define an enemy's capabilities

Enumeration Type Documentation

EnemyType

enum EnemyType

Enemy type enumeration.

Defines the different types of enemies in the game

Enumerator
ENEMY_TYPE_PROXY
ENEMY_TYPE_ECHO
ENEMY_TYPE_KAMIKAZE
ENEMY_TYPE_RECHARGE
ENEMY_TYPE_VANTAGE
ENEMY_TYPE_RADIUS
ENEMY_TYPE_SABOT
ENEMY_TYPE_TACTICIAN
ENEMY_TYPE_JUGGERNAUT
ENEMY_TYPE_SENTRY
ENEMY_TYPE_LIBET
ENEMY_TYPE_COUNT

Function Documentation

Enemy_CreateHealthText()

void Enemy_CreateHealthText	(	Vec2	position,
		int	damage
	)

Enemy_Destroy()

void Enemy_Destroy

(

)

Enemy_HandleDeath()

void Enemy_HandleDeath

(

EnemyData *

enemy

)

[Utility] Handles the death of an enemy.

Sets health to 0, marks as dead, and removes collision. Called when an enemy's health reaches zero or when they spawn inside another object.

Parameters

enemy

Pointer to the enemy that died

Enemy_HandleMovement()

void Enemy_HandleMovement

(

EnemyData *

enemy

)

[Utility] Handles enemy movement physics and velocity calculations.

Implements a complex movement system that decomposes velocity into forward and lateral components to apply different physics rules to each, then recombines them.

Parameters

enemy

Pointer to the enemy to move

Enemy_HandleSpawning()

void Enemy_HandleSpawning

(

EnemyData *

enemy

)

[Utility] Manages the spawning process for an enemy.

Handles the 1-second delay between the appearance of the [+] indicator and the enemy actually spawning. Also checks for collision at spawn point.

Parameters

enemy

Pointer to the enemy being spawned

Todo:

[enemy_update.c:62] Play spawn sfx here

Enemy_Init()

void Enemy_Init

(

)

[Start] Initializes the enemy system

Prepares all enemy slots as inactive and loads necessary textures.

Enemy_Render()

void Enemy_Render

(

)

[Render] Renders all active enemies

Iterates through the enemy array and calls each enemy's specific render function if they are active.

Enemy_RenderHealthTexts()

void Enemy_RenderHealthTexts

(

)

Enemy_Spawn()

void Enemy_Spawn	(	EnemyData	data,
		Vec2	position
	)

[Utility] Spawns an enemy of the given type at the specified position

Creates a new enemy instance based on the provided template and initializes it at the given position. If no position is provided (NULL), a random valid position is chosen.

Parameters

data	The enemy data template to use for spawning
position	Position vector for enemy spawn location

Enemy_TakeDamage()

void Enemy_TakeDamage	(	EnemyData *	enemy,
		int	damage
	)

[Utility] Applies damage to an enemy

Reduces an enemy's health based on the damage amount. Enemies with 0 or less health after damage will be marked for death processing.

Parameters

enemy	Pointer to the enemy to damage
damage	Amount of damage to apply

Enemy_TryMove()

void Enemy_TryMove	(	EnemyData *	enemy,
		Vec2	movement
	)

[Utility] Attempts to move the enemy by the given vector, checking for collisions.

Tries to move an enemy to a new position but cancels the movement if a collision would occur with walls, the player, or other enemies.

Parameters

enemy	Pointer to the enemy to move
movement	Vector representing the attempted movement

Enemy_Update()

void Enemy_Update

(

)

[PostUpdate] Updates all active enemies in the game.

Main update loop for all enemies in the game. Skips dead enemies, handles special states like spawning, and processes movement and death conditions for each enemy.

Enemy_UpdateHealthTexts()

void Enemy_UpdateHealthTexts

(

)

EnemyManage_CountEnemyInChunk()

int EnemyManage_CountEnemyInChunk

(

EnvironmentChunk *

chunk

)

[Utility] Counts the number of active enemies in a specific chunk

Parameters

chunk

Pointer to the chunk to check

Returns

int Number of active enemies in the chunk

EnemyManager_RenderClearText()

void EnemyManager_RenderClearText

(

)

EnemyManager_Update()

void EnemyManager_Update

(

)

[PostUpdate] Updates the enemy management system

Handles enemy spawning, despawning, and room transitions. Manages which enemies are active based on player position.

Todo:

[enemy_manager.c:87] Add enemy spawning sfx here (Aka the red [+] thing appearing)

Variable Documentation

enemies

EnemyData enemies[ENEMY_MAX]

extern

Array of enemies.

Holds all the enemies in the game

Array of enemies.

Enemy_spawnIndicator

SDL_Texture* Enemy_spawnIndicator

extern

Texture for enemy spawn indicator.

enemyList

EnemyData* enemyList[ENEMY_TYPE_COUNT]

extern

TacticianBuffEffectEmitter

ParticleEmitter* TacticianBuffEffectEmitter

extern