link executable properly so it can be started from other directories

Makefile

@@ -1,18 +1,18 @@
-VERSION=v0.2.1
-# CC := g++
-CC := clang++
+VERSION=v0.2.2
+
+CXX := g++
+# CXX := clang++
+CPPFLAGS := -g -Wall -std=c++17
 LFLAGS := -lX11 -lXrandr -lXtst -lglfw -lGL
-LIBS := openvr/libopenvr_api.so
-SRC := src/*.cpp
-OUT := ./sinpin_vr
-CPPFLAGS := -Wall -std=c++17 $(LFLAGS) $(LIBS) $(SRC) -o $(OUT)
+OVR := -Lopenvr -lopenvr_api
+TARGET := ./sinpin_vr
 
 build:
-	$(CC) -g $(CPPFLAGS)
+	$(CXX) src/*.cpp $(CPPFLAGS) $(LFLAGS) -Wl,-rpath,'$$ORIGIN/openvr' $(OVR) -o $(TARGET)
 
 release: build
 	zip -r sinpin_vr-$(VERSION).zip sinpin_vr bindings openvr/libopenvr_api.so
 
 run: build
-	$(OUT)
+	$(TARGET)
 

bindings/action_manifest.json

@@ -55,6 +55,11 @@
 			"name": "/actions/cursor/in/scroll",
 			"requirement": "suggested",
 			"type": "vector2"
+		},
+		{
+			"name": "/actions/cursor/out/scroll_haptic",
+			"requirement": "suggested",
+			"type": "vibration"
 		}
 	],
 	"action_sets": [
@@ -83,7 +88,8 @@
 			"/actions/cursor/in/mouse_left": "left mouse button",
 			"/actions/cursor/in/mouse_right": "right mouse button",
 			"/actions/cursor/in/mouse_middle": "middle mouse button",
-			"/actions/cursor/in/scroll": "scroll"
+			"/actions/cursor/in/scroll": "scroll",
+			"/actions/cursor/out/scroll_haptic": "scrolling haptic feedback"
 		}
 	]
 }

bindings/index_controller.json

@@ -141,6 +141,16 @@
    "app_key" : "system.generated.sinpin_vr",
    "bindings" : {
       "/actions/cursor" : {
+         "haptics" : [
+            {
+               "output" : "/actions/cursor/out/scroll_haptic",
+               "path" : "/user/hand/left/output/haptic"
+            },
+            {
+               "output" : "/actions/cursor/out/scroll_haptic",
+               "path" : "/user/hand/right/output/haptic"
+            }
+         ],
          "sources" : [
             {
                "inputs" : {

src/app.cpp

@@ -75,6 +75,8 @@ App::App()
 		assert(action_err == 0);
 		action_err = vr_input->GetActionHandle("/actions/cursor/in/scroll", &_input_handles.cursor.scroll);
 		assert(action_err == 0);
+		action_err = vr_input->GetActionHandle("/actions/cursor/out/scroll_haptic", &_input_handles.cursor.scroll_haptic);
+		assert(action_err == 0);
 		action_err = vr_input->GetActionSetHandle("/actions/main", &_input_handles.main_set);
 		assert(action_err == 0);
 		action_err = vr_input->GetActionSetHandle("/actions/edit", &_input_handles.edit_set);

src/app.h

@@ -32,6 +32,7 @@ struct InputHandles
 		vr::VRActionHandle_t mouse_right;
 		vr::VRActionHandle_t mouse_middle;
 		vr::VRActionHandle_t scroll;
+		vr::VRActionHandle_t scroll_haptic;
 	} cursor;
 	vr::VRActionSetHandle_t cursor_set;
 	struct

src/controller.cpp

@@ -8,6 +8,8 @@ const float LASER_WIDTH = 0.004f;
 const Color EDIT_COLOR{1, 0.6f, 1};
 const Color CURSOR_COLOR{0.3f, 1, 1};
 const float SCROLL_SPEED = 48;
+const float SCROLL_HAPTIC_STRENGTH = 0.15f;
+const float SCROLL_HAPTIC_TIME = 0.1f;
 const float MOUSE_DRAG_THRESHOLD = 48;
 
 Controller::Controller(App *app, ControllerSide side)
@@ -161,11 +163,13 @@ void Controller::Update(float dtime)
 					{
 						_app->SendMouseInput(4, true);
 						_app->SendMouseInput(4, false);
+						_app->vr_input->TriggerHapticVibrationAction(_app->_input_handles.cursor.scroll_haptic, 0, SCROLL_HAPTIC_TIME, 1 / SCROLL_HAPTIC_TIME, SCROLL_HAPTIC_STRENGTH, _input_handle);
 					}
 					else if (scroll_state.y < 0)
 					{
 						_app->SendMouseInput(5, true);
 						_app->SendMouseInput(5, false);
+						_app->vr_input->TriggerHapticVibrationAction(_app->_input_handles.cursor.scroll_haptic, 0, SCROLL_HAPTIC_TIME, 1 / SCROLL_HAPTIC_TIME, SCROLL_HAPTIC_STRENGTH, _input_handle);
 					}
 				}
 			}

src/overlay.cpp

@@ -159,28 +159,29 @@ void Overlay::SetTargetWorld()
 	SetTransformWorld(&abs_pose);
 }
 
-Ray Overlay::IntersectRay(glm::vec3 origin, glm::vec3 direction, float max_len)
+Ray Overlay::IntersectRay(glm::vec3 ray_start_g, glm::vec3 direction, float max_len)
 {
 	float dist = max_len;
-	auto end = origin + direction * max_len;
+	auto ray_end_g = ray_start_g + direction * max_len;
 
 	auto panel_transform = GetTransformAbsolute();
 	auto panel_pos = GetPos(panel_transform);
-	auto a = glm::inverse(panel_transform) * glm::vec4(origin - panel_pos, 0);
-	auto b = glm::inverse(panel_transform) * glm::vec4(end - panel_pos, 0);
-	float r = a.z / (a.z - b.z);
-	auto p = a + (b - a) * r;
-	// printf("panel pos: (%.2f,%.2f,%.2f)\n", panel_pos.x, panel_pos.y, panel_pos.z);
-	// printf("a: (%.2f,%.2f,%.2f)\n", a.x, a.y, a.z);
-	// printf("b: (%.2f,%.2f,%.2f)\n", b.x, b.y, b.z);
-	// printf("r: %.2f\n", r);
-	// printf("p: (%.2f,%.2f,%.2f)\n", p.x, p.y, p.z);
+	auto ray_start = glm::inverse(panel_transform) * glm::vec4(ray_start_g - panel_pos, 0);
+	auto ray_end = glm::inverse(panel_transform) * glm::vec4(ray_end_g - panel_pos, 0);
+	float length_frac = ray_start.z / (ray_start.z - ray_end.z);
+	auto hit_pos = ray_start + (ray_end - ray_start) * length_frac;
 
-	if (b.z < a.z && b.z < 0 && glm::abs(p.x) < (_width_m * 0.5f) && glm::abs(p.y) < (_width_m * 0.5f * _ratio))
+	// clang-format off
+	if (ray_end.z < ray_start.z
+		&& ray_end.z < 0
+		&& glm::abs(hit_pos.x) < (_width_m * 0.5f)
+		&& glm::abs(hit_pos.y) < (_width_m * 0.5f * _ratio)
+		&& length_frac > 0)
 	{
-		dist = glm::min(r * max_len, max_len);
+		// clang-format on
+		dist = glm::min(length_frac * max_len, max_len);
 	}
-	return Ray{.overlay = this, .distance = dist, .local_pos = p, .hit_panel = nullptr};
+	return Ray{.overlay = this, .distance = dist, .local_pos = hit_pos, .hit_panel = nullptr};
 }
 
 glm::mat4x4 Overlay::GetTransformAbsolute()