add tweaks for st-refactor

1 files changed, 50 insertions, 0 deletions

diff --git a/common/accel-base.hpp b/common/accel-base.hpp
new file mode 100644
index 0000000..ed79bdb
--- /dev/null
+++ b/common/accel-base.hpp
@@ -0,0 +1,50 @@
+#pragma once
+
+namespace rawaccel {
+
+    // Error throwing calls std libraries which are unavailable in kernel mode.
+    void error(const char* s);
+
+    using milliseconds = double;
+
+    /// <summary> Struct to hold arguments for an acceleration function. </summary>
+    struct accel_args {
+        double offset = 0;
+        double accel = 0;
+        double limit = 2;
+        double exponent = 2;
+        double midpoint = 0;
+        double power_scale = 1;
+    };
+
+    /// <summary>
+    /// Struct to hold common acceleration curve implementation details.
+    /// </summary>
+    struct accel_base {
+        
+        /// <summary> Generally, the acceleration ramp rate.</summary>
+        double speed_coeff = 0;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="accel_base"/> struct.
+        /// </summary>
+        /// <param name="args"></param>
+        /// <returns></returns>
+        accel_base(accel_args args) {
+            verify(args);
+
+            speed_coeff = args.accel;
+        }
+
+        /// <summary>
+        /// Verifies arguments as valid. Errors if not.
+        /// </summary>
+        /// <param name="args">Arguments to verified.</param>
+        void verify(accel_args args) const {
+            if (args.accel < 0) error("accel can not be negative, use a negative weight to compensate");
+        }
+
+        accel_base() = default;
+    };
+
+}