archivemuh

src/input/CMakeLists.txt

@@ -0,0 +1,10 @@
+# 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
+    input.c
+)

src/input/input.c

@@ -0,0 +1,43 @@
+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "input.h"
+#include "assert/assert.h"
+#include "util/memory.h"
+
+input_t INPUT;
+
+void inputInit(void) {
+  memoryZero(&INPUT, sizeof(input_t));
+}
+
+void inputUpdate(void) {
+  INPUT.previous = INPUT.current;
+  INPUT.current = inputStateGet();
+}
+
+inputstate_t inputStateGet(void) {
+  return 0;
+}
+
+bool_t inputIsDown(const inputbind_t bind) {
+  assertTrue(bind < INPUT_BIND_COUNT, "Input bind out of bounds");
+  return (INPUT.current & bind) != 0;
+}
+
+bool_t inputWasDown(const inputbind_t bind) {
+  assertTrue(bind < INPUT_BIND_COUNT, "Input bind out of bounds");
+  return (INPUT.previous & bind) != 0;
+}
+
+bool_t inputPressed(const inputbind_t bind) {
+  return inputIsDown(bind) && !inputWasDown(bind);
+}
+
+bool_t inputReleased(const inputbind_t bind) {
+  return !inputIsDown(bind) && inputWasDown(bind);
+}

src/input/input.h

@@ -0,0 +1,80 @@
+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dusk.h"
+
+typedef uint8_t inputbind_t;
+typedef inputbind_t inputstate_t;
+
+#define INPUT_BIND_UP (1 << 0)
+#define INPUT_BIND_DOWN (1 << 1)
+#define INPUT_BIND_LEFT (1 << 2)
+#define INPUT_BIND_RIGHT (1 << 3)
+#define INPUT_BIND_ACTION (1 << 4)
+#define INPUT_BIND_CANCEL (1 << 5)
+#define INPUT_BIND_CONSOLE (1 << 6)
+#define INPUT_BIND_QUIT (1 << 7)
+
+#define INPUT_BIND_COUNT (INPUT_BIND_QUIT + 1)
+
+typedef struct {
+  uint8_t current;
+  uint8_t previous;
+} input_t;
+
+extern input_t INPUT;
+
+/**
+ * Initialize the input system.
+ */
+void inputInit(void);
+
+/**
+ * Updates the input state.
+ */
+void inputUpdate(void);
+
+/**
+ * Gets the current input state as a bitmask.
+ * 
+ * @return The current input state as a bitmask.
+ */
+inputstate_t inputStateGet(void);
+
+/**
+ * Checks if a specific input bind is currently pressed.
+ * 
+ * @param bind The input bind to check.
+ * @return true if the bind is currently pressed, false otherwise.
+ */
+bool_t inputIsDown(const inputbind_t bind);
+
+/**
+ * Checks if a specific input bind was pressed in the last update.
+ * 
+ * @param bind The input bind to check.
+ * @return true if the bind was pressed in the last update, false otherwise.
+ */
+bool_t inputWasDown(const inputbind_t bind);
+
+/**
+ * Checks if a specific input bind was down this frame but not in the the
+ * previous frame.
+ * 
+ * @param bind The input bind to check.
+ * @return true if the bind is currently pressed, false otherwise.
+ */
+bool_t inputPressed(const inputbind_t bind);
+
+/**
+ * Checks if a specific input bind was released this frame.
+ * 
+ * @param bind The input bind to check.
+ * @return true if the bind was released this frame, false otherwise.
+ */
+bool_t inputReleased(const inputbind_t bind);