AP_Scripting: add param accesss helper

libraries/AP_Scripting/AP_Scripting_helpers.cpp

@@ -0,0 +1,95 @@
+#include "AP_Scripting_helpers.h"
+
+/// Fast param access via pointer helper class
+
+// init by name
+bool Parameter::init(const char *name)
+{
+    vp = AP_Param::find(name, &vtype);
+    if (vp == nullptr) {
+        return false;
+    }
+    return true;
+}
+
+// set a value
+bool Parameter::set(float value)
+{
+    if (vp == nullptr) {
+        return false;
+    }
+    switch (vtype) {
+    case AP_PARAM_INT8:
+        ((AP_Int8 *)vp)->set(value);
+        return true;
+    case AP_PARAM_INT16:
+        ((AP_Int16 *)vp)->set(value);
+        return true;
+    case AP_PARAM_INT32:
+        ((AP_Int32 *)vp)->set(value);
+        return true;
+    case AP_PARAM_FLOAT:
+        ((AP_Float *)vp)->set(value);
+        return true;
+    default:
+        break;
+    }
+    // not a supported type
+    return false;
+}
+
+//  get a value by name
+bool Parameter::get(float &value)
+{
+    if (vp == nullptr) {
+        return false;
+    }
+    switch (vtype) {
+    case AP_PARAM_INT8:
+        value = ((AP_Int8 *)vp)->get();
+        break;
+    case AP_PARAM_INT16:
+        value = ((AP_Int16 *)vp)->get();
+        break;
+
+    case AP_PARAM_INT32:
+        value = ((AP_Int32 *)vp)->get();
+        break;
+
+    case AP_PARAM_FLOAT:
+        value = ((AP_Float *)vp)->get();
+        break;
+
+    default:
+        // not a supported type
+        return false;
+    }
+    return true;
+}
+
+// set and save a value by name
+bool Parameter::set_and_save(float value)
+{
+    if (vp == nullptr) {
+        return false;
+    }
+    switch (vtype) {
+    case AP_PARAM_INT8:
+        ((AP_Int8 *)vp)->set_and_save(value);
+        return true;
+    case AP_PARAM_INT16:
+        ((AP_Int16 *)vp)->set_and_save(value);
+        return true;
+    case AP_PARAM_INT32:
+        ((AP_Int32 *)vp)->set_and_save(value);
+        return true;
+    case AP_PARAM_FLOAT:
+        ((AP_Float *)vp)->set_and_save(value);
+        return true;
+    default:
+        break;
+    }
+    // not a supported type
+    return false;
+}
+

libraries/AP_Scripting/AP_Scripting_helpers.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include <AP_Param/AP_Param.h>
+
+/// Fast param access via pointer helper
+class Parameter
+{
+public:
+
+    // init to param by name
+    bool init(const char *name);
+
+    // setters and getters
+    bool set(float value);
+    bool set_and_save(float value);
+    bool get(float &value);
+
+private:
+    enum ap_var_type vtype;
+    AP_Param *vp;
+};
+