Added basic player movement.

include/dawn/dawn.h

@@ -17,6 +17,7 @@
 #include "file/asset.h"
 
 #include "game/game.h"
+#include "game/gametime.h"
 
 #include "input/input.h"
 

include/dawn/game/gametime.h

@@ -0,0 +1,38 @@
+/**
+ * Copyright (c) 2021 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+
+#define GAMETIME_STEP 0.016
+
+typedef struct {
+  /**
+   * Current time (as a float of seconds since game start).
+   * 
+   * When time is initialized this will start at a fixed value of 2/60ths of a 
+   * second, regardless of what engine the game is running.
+   * 
+   * This is to avoid any divide by zero errors.
+   */
+  float current;
+
+  /**
+   * Last Time (as a float of seconds since the game start).
+   * 
+   * This value will start at 1/60th of a second regardless of engine the game
+   * is running on to avoid divide by zero errors.
+   */
+  float last;
+
+  /**
+   * Fixed timestep that occured since the last frame. Typically locked to 1/60
+   * steps per second.
+   */
+  float delta;
+} gametime_t;
+
+extern gametime_t TIME_STATE;

include/dawn/input/input.h

@@ -9,10 +9,10 @@
 
 
 /** Inputs */
-#define GAME_INPUT_UP          (inputbind_t)0x01
-#define GAME_INPUT_DOWN        (inputbind_t)0x02
-#define GAME_INPUT_LEFT        (inputbind_t)0x03
-#define GAME_INPUT_RIGHT       (inputbind_t)0x04
+#define INPUT_UP          (inputbind_t)0x01
+#define INPUT_DOWN        (inputbind_t)0x02
+#define INPUT_LEFT        (inputbind_t)0x03
+#define INPUT_RIGHT       (inputbind_t)0x04
 
 #define INPUT_NULL (inputbind_t)0x00
 #define INPUT_BIND_COUNT 128

include/dawn/world/entity/entity.h

@@ -7,17 +7,50 @@
 
 #pragma once
 #include "../../libs.h"
+#include "../../display/spritebatch.h"
 
+/** Entity ID Definitions */
+#define ENTITY_TYPE_NULL 0x00
+#define ENTITY_TYPE_PLAYER 0x01
+
+/** Max count of entities in the world */
 #define ENTITY_COUNT 64
 
+/** Count of different types of entities */
+#define ENTITY_TYPE_COUNT ENTITY_TYPE_PLAYER + 1
+
+/** Unique Entity ID */
+typedef uint8_t entityid_t;
+
+/** Unique Entity ID for the Entity Type */
+typedef uint8_t entitytypeid_t;
+
+/** Entity Definition */
 typedef struct {
+  entitytypeid_t type;
   int32_t gridX, gridY, gridZ;
   int32_t oldGridX, oldGridY, oldGridZ;
   float positionX, positionY, positionZ;
 } entity_t;
 
+/** Definition for an entity type */
 typedef struct {
-  entity_t entities[ENTITY_COUNT]
+  void (*entityInit)(entityid_t entityId, entity_t *entity);
+  void (*entityUpdate)(entityid_t entityId, entity_t *entity);
+  void (*entityDispose)(entityid_t entityId, entity_t *entity);
+} entitytype_t;
+
+/** Entity State Management */
+typedef struct {
+  /** Entities within the state */
+  entity_t entities[ENTITY_COUNT];
+
+  /** Sprite Batch in the state */
+  spritebatch_t *spriteBatch;
 } entitystate_t;
 
-extern entitystate_t ENTITY_STATE;
+/** Global Entity State */
+extern entitystate_t ENTITY_STATE;
+
+/** Global Entity Type Definitions */
+extern entitytype_t ENTITY_TYPES[ENTITY_TYPE_COUNT];