A lot has certainly happened!

1 files changed, 52 insertions, 0 deletions

diff --git a/src/gunner/rumble.c b/src/gunner/rumble.c
new file mode 100644
index 0000000..dca4f08
--- /dev/null
+++ b/src/gunner/rumble.c
@@ -0,0 +1,52 @@
+/*
+NOTE FOR SPELUNKERS: this requires linking to xinput1_4 AFAIK
+*/
+
+// Windows stuff starts //
+typedef struct _XINPUT_VIBRATION {
+    unsigned wLeftMotorSpeed;
+    unsigned wRightMotorSpeed;
+} XINPUT_VIBRATION;
+unsigned int XInputSetState(unsigned int dwUserIndex, XINPUT_VIBRATION *pVibration);
+// Windows stuff ends //
+
+static fx32 timer = 0;
+
+void set_rumble(f32 duration, f32 strength)
+{
+	// If game code is surpassing this something is wrong!!
+	assert(strength >= 0.f && strength <= 1.f);
+	
+	XINPUT_VIBRATION state = {};
+    state.wLeftMotorSpeed  = (unsigned)(strength * 65535.0f);
+    state.wRightMotorSpeed = (unsigned)(strength * 65535.0f);
+
+    if (XInputSetState(0, &state) == 0){
+        timer = FP_TO_FIXED(duration);
+    }
+}
+
+void stop_rumble(void)
+{
+	timer = 0;
+	
+	XINPUT_VIBRATION state = {};
+    state.wLeftMotorSpeed  = 0;
+    state.wRightMotorSpeed = 0;
+	XInputSetState(0, &state);
+}
+
+void poll_rumble(f32 dt)
+{
+	// Early return
+	if(timer <= 0)
+		return;
+		
+	fx32 delta = FP_TO_FIXED(dt);
+	
+	timer -= delta;
+	if(timer <= 0){
+		stop_rumble();
+	}
+}
+