From d240084aa7e41725a0228e123080aa7fe8a241b7 Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@osirion.org>
Date: Wed, 6 Aug 2008 19:35:49 +0000
Subject: target hovering, cursors and mouse and joystick interaction

---
 src/client/targets.cc | 61 ++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 58 insertions(+), 3 deletions(-)

(limited to 'src/client/targets.cc')

diff --git a/src/client/targets.cc b/src/client/targets.cc
index b16ae13..128064e 100644
--- a/src/client/targets.cc
+++ b/src/client/targets.cc
@@ -197,6 +197,45 @@ void func_target_prev(std::string const &args)
 	}
 }
 
+void func_target_none(std::string const &args)
+{
+	current_target = 0;
+	current_target_id = 0;
+}
+
+void func_target_center(std::string const &args)
+{
+	if (!core::localcontrol())
+		return;
+	
+	// this is essentialy the hover algorithm with the cursor in the center
+	core::Entity *new_target = 0;
+	math::Vector3f center = render::Camera::eye() + render::Camera::axis().forward() * (render::Camera::frustum_front() + 0.001);
+	float smallest_d = -1;
+
+	for (core::Zone::Content::iterator it=core::localcontrol()->zone()->content().begin(); it != core::localcontrol()->zone()->content().end(); it++) {
+		core::Entity *entity = (*it);
+
+		math::Vector3f v(entity->state()->location() - render::Camera::eye());
+		v.normalize();
+
+		if (is_legal_target(entity) && math::dotproduct(render::Camera::axis().forward(), v) > 0.5 ) {
+
+			// calculate the distance from entity location to the line [eye - cursor]
+			float d = math::Vector3f::length(math::crossproduct( (center - render::Camera::eye()) , (render::Camera::eye() - entity->location()))) / math::Vector3f::length(center - render::Camera::eye());
+
+			// the entity closer to the center beam
+			if (smallest_d < 0 || d < smallest_d) {
+				new_target = entity;
+				smallest_d = d;
+			}
+		}
+	}
+
+	if (new_target)
+		select_target(new_target);
+}
+
 void reset()
 {
 	current_target = 0;
@@ -218,6 +257,12 @@ void init()
 	core::Func::add("target_prev", func_target_prev);
 	func->set_info("select previous target");
 
+	core::Func::add("target_none", func_target_none);
+	func->set_info("deselect current target");
+
+	core::Func::add("target_center", func_target_center);
+	func->set_info("select target near center");
+
 	reset();
 }
 
@@ -227,6 +272,8 @@ void shutdown()
 
 	core::Func::remove("target_next");
 	core::Func::remove("target_prev");
+	core::Func::remove("target_none");
+	core::Func::remove("target_center");
 }
 
 void render_listener_sound()
@@ -378,8 +425,16 @@ void draw()
 	float z = -1;
 
 	// mouse cursor location in 3d world space
-	float x = (float)(input::mouse_position_x() - video::width /2) / (float)video::width;
-	float y = (float)(input::mouse_position_y() - video::height /2) / (float)video::height / render::Camera::aspect();
+	float x = 0;
+	float y = 0;
+
+	if ((input::joystick_lastmoved_time() > input::mouse_lastmoved_time()) && (render::Camera::mode() == render::Camera::Cockpit || render::Camera::mode() == render::Camera::Track)) {
+		x = 0;
+		y = 0;
+	} else {
+		x = (float)(input::mouse_position_x() - video::width /2) / (float)video::width;
+		y = (float)(input::mouse_position_y() - video::height /2) / (float)video::height / render::Camera::aspect();
+	}
 
 	Vector3f cursor = render::Camera::eye() + render::Camera::axis().forward() * (render::Camera::frustum_front() + 0.001);
 	cursor -= render::Camera::axis().left() * x;
@@ -408,7 +463,7 @@ void draw()
 
 			if (math::dotproduct(render::Camera::axis().forward(), v) > 0.75 ) {
 
-				// caculate the distance from entity location to the line [eye - cursor]
+				// calculate the distance from entity location to the line [eye - cursor]
 				float d = math::Vector3f::length(math::crossproduct( (cursor - render::Camera::eye()) , (render::Camera::eye() - entity->location()))) / math::Vector3f::length(cursor - render::Camera::eye());
 	
 				float r = entity->radius() * 0.5f;
-- 
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