Prog

src/rpg/entity/CMakeLists.txt

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+# Copyright (c) 2025 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Sources
+target_sources(${DUSK_TARGET_NAME}
+  PRIVATE
+    entity.c
+    player.c
+)

src/rpg/entity/entity.c

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+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "assert/assert.h"
+#include "util/memory.h"
+#include "entity.h"
+
+entity_t ENTITIES[ENTITY_COUNT];
+
+entitycallbacks_t ENTITY_CALLBACKS[ENTITY_TYPE_COUNT] = {
+    [ENTITY_TYPE_NULL] = {
+      .init = NULL
+    },
+    
+    [ENTITY_TYPE_PLAYER] = {
+      .init = playerInit
+    },
+};
+
+
+
+void entityInit(entity_t *entity, const entitytype_t type) {
+  assertNotNull(entity, "Entity is NULL");
+  assertTrue(type < ENTITY_TYPE_COUNT, "Invalid entity type");
+  assertNotNull(ENTITY_CALLBACKS[type].init, "Entity type has no init");
+
+  memoryZero(entity, sizeof(entity_t));
+  entity->type = type;
+  ENTITY_CALLBACKS[type].init(entity);
+}

src/rpg/entity/entity.h

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+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "player.h"
+
+typedef enum {
+  ENTITY_DIR_UP = 0,
+  ENTITY_DIR_DOWN = 1,
+  ENTITY_DIR_LEFT = 2,
+  ENTITY_DIR_RIGHT = 3,
+
+  ENTITY_DIR_NORTH = ENTITY_DIR_UP,
+  ENTITY_DIR_SOUTH = ENTITY_DIR_DOWN,
+  ENTITY_DIR_WEST = ENTITY_DIR_LEFT,
+  ENTITY_DIR_EAST = ENTITY_DIR_RIGHT
+} entitydir_t;
+
+typedef enum {
+  ENTITY_TYPE_NULL = 0,
+  ENTITY_TYPE_PLAYER = 1,
+} entitytype_t;
+#define ENTITY_TYPE_COUNT (ENTITY_TYPE_PLAYER + 1)
+
+typedef struct _entity_t {
+  entitytype_t type;
+  uint8_t x, y;
+  entitydir_t dir;
+
+  // Per type data
+  union {
+    player_t player;
+  };
+} entity_t;
+
+#define ENTITY_COUNT 16
+extern entity_t ENTITIES[ENTITY_COUNT];
+
+typedef struct {
+  void (*init)(entity_t *entity);
+} entitycallbacks_t;
+extern entitycallbacks_t ENTITY_CALLBACKS[ENTITY_TYPE_COUNT];
+
+/**
+ * Initializes an entity with the given type.
+ * 
+ * @param entity Pointer to the entity to initialize.
+ * @param type The type of the entity to initialize.
+ */
+void entityInit(entity_t *entity, const entitytype_t type);

src/rpg/entity/player.c

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+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "entity.h"
+#include "assert/assert.h"
+
+void playerInit(entity_t *player) {
+  assertNotNull(player, "Player entity is NULL");
+  assertTrue(player->type == ENTITY_TYPE_PLAYER, "Entity is not a player");
+}

src/rpg/entity/player.h

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+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dusk.h"
+
+typedef struct _entity_t entity_t;
+
+typedef struct {
+  uint8_t nothing;
+} player_t;
+
+/**
+ * Initializes a player entity.
+ * 
+ * @param ent Pointer to the player entity to initialize.
+ */
+void playerInit(entity_t *ent);