Add isKeyDown

src/api/l_system.c

@@ -114,10 +114,17 @@ static int l_lovrSystemRequestPermission(lua_State* L) {
   return 0;
 }
 
+static int l_lovrSystemIsKeyDown(lua_State* L) {
+  os_key key = luax_checkenum(L, 1, KeyboardKey, NULL);
+    lua_pushboolean(L, lovrSystemIsKeyDown(key));
+  return 1;
+}
+
 static const luaL_Reg lovrSystem[] = {
   { "getOS", l_lovrSystemGetOS },
   { "getCoreCount", l_lovrSystemGetCoreCount },
   { "requestPermission", l_lovrSystemRequestPermission },
+  { "isKeyDown", l_lovrSystemIsKeyDown },
   { NULL, NULL }
 };
 

src/modules/system/system.c

@@ -4,7 +4,13 @@
 #include "util.h"
 #include <string.h>
 
+static struct {
+  bool initialized;
+  bool pressedKeys[KEY_COUNT];
+} state;
+
 static void onKeyboardEvent(os_button_action action, os_key key, uint32_t scancode, bool repeat) {
+  state.pressedKeys[key] = (action == BUTTON_PRESSED);
   lovrEventPush((Event) {
     .type = action == BUTTON_PRESSED ? EVENT_KEYPRESSED : EVENT_KEYRELEASED,
     .data.key.code = key,
@@ -30,10 +36,6 @@ static void onPermissionEvent(os_permission permission, bool granted) {
   lovrEventPush(event);
 }
 
-static struct {
-  bool initialized;
-} state;
-
 bool lovrSystemInit() {
   if (state.initialized) return false;
   os_on_key(onKeyboardEvent);
@@ -59,6 +61,10 @@ uint32_t lovrSystemGetCoreCount() {
   return os_get_core_count();
 }
 
+bool lovrSystemIsKeyDown(os_key key) {
+  return state.pressedKeys[key];
+}
+
 void lovrSystemRequestPermission(Permission permission) {
   os_request_permission((os_permission) permission);
 }

src/modules/system/system.h

@@ -1,5 +1,6 @@
 #include <stdbool.h>
 #include <stdint.h>
+#include "core/os.h"
 
 #pragma once
 
@@ -12,3 +13,4 @@ void lovrSystemDestroy(void);
 const char* lovrSystemGetOS(void);
 uint32_t lovrSystemGetCoreCount(void);
 void lovrSystemRequestPermission(Permission permission);
+bool lovrSystemIsKeyDown(os_key key);