Moved some code around and cleaned things a bit.

src/platform/platform.h

@@ -0,0 +1,52 @@
+// Copyright (c) 2021 Dominic Msters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include <malloc.h>
+#include <stdint.h>
+
+typedef void platforminputsource_t;
+
+/**
+ * Platform stuct, contains information about the device/method that is running
+ * the program that the game itself is running on, typically this will be either
+ * the operating system, or perhaps the specific device information.
+ */
+typedef struct {
+  /** Internal name of the platform */
+  char *name;
+
+  /** List of known input sources */
+  platforminputsource_t **inputSources;
+  /** Count of known input source */
+  uint32_t *inputSourceCount;
+  /** State of the input sources, updated by the platform. */
+  float *inputStates;
+} platform_t;
+
+/**
+ * Initialize the current platform context. The platform itself is responsible
+ * for deciding how this method is implemented.
+ * 
+ * @return The context information for the platform.
+ */
+platform_t * platformInit();
+
+/**
+ * Cleanup a previously created platform instance.
+ * 
+ * @param platform The platform instance to cleanse.
+ */
+void platformDispose(platform_t *platform);
+
+/**
+ * Method will be polled for each known input source to request the current
+ * state from the device. Values returned will be defined within the 0 to 1
+ * range.
+ * 
+ * @param source The input source.
+ * @return Input state between 0 and 1.
+ */
+float platformInputGetState(platforminputsource_t *source);

src/platform/win32/win32platform.c

@@ -0,0 +1,26 @@
+// Copyright (c) 2021 Dominic Msters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "win32platform.h"
+
+platform_t * platformInit() {
+  platform_t *platform = malloc(sizeof(platform_t));
+  
+  platform->name = WIN32_NAME;
+
+  platform->inputSourceCount = 0;
+  platform->inputSources = NULL;
+  platform->inputStates = NULL;
+
+  return platform;
+}
+
+void platformDispose(platform_t *platform) {
+  free(platform);
+}
+
+float platformInputGetState(platforminputsource_t *source) {
+  return 0;
+}

src/platform/win32/win32platform.h

@@ -0,0 +1,9 @@
+// Copyright (c) 2021 Dominic Msters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "../platform.h"
+
+#define WIN32_NAME "Win32"