2 Copyright (C) 2001-2006, William Joseph.
5 This file is part of GtkRadiant.
7 GtkRadiant is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 GtkRadiant is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GtkRadiant; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #if !defined( INCLUDED_TARGETABLE_H )
23 #define INCLUDED_TARGETABLE_H
29 #include "renderable.h"
31 #include "math/line.h"
33 #include "generic/callback.h"
34 #include "selectionlib.h"
35 #include "entitylib.h"
36 #include "eclasslib.h"
42 virtual const Vector3& world_position() const = 0;
45 typedef std::set<Targetable*> targetables_t;
47 extern const char* g_targetable_nameKey;
49 targetables_t* getTargetables( const char* targetname );
51 class EntityConnectionLine : public OpenGLRenderable
57 void render( RenderStateFlags state ) const {
59 Vector3 dir( vector3_subtracted( end, start ) );
60 double len = vector3_length( dir );
61 vector3_scale( dir, 8.0 * ( 1.0 / len ) );
62 s1[0] = dir[0] - dir[1];
63 s1[1] = dir[0] + dir[1];
64 s2[0] = dir[0] + dir[1];
65 s2[1] = -dir[0] + dir[1];
69 glVertex3fv( vector3_to_array( start ) );
70 glVertex3fv( vector3_to_array( end ) );
72 len *= 0.0625; // half / 8
74 Vector3 arrow( start );
75 for ( unsigned int i = 0, count = ( len < 32 ) ? 1 : static_cast<unsigned int>( len * 0.0625 ); i < count; i++ )
77 vector3_add( arrow, vector3_scaled( dir, ( len < 32 ) ? len : 32 ) );
78 glVertex3fv( vector3_to_array( arrow ) );
79 glVertex3f( arrow[0] + s1[0], arrow[1] + s1[1], arrow[2] + dir[2] );
80 glVertex3fv( vector3_to_array( arrow ) );
81 glVertex3f( arrow[0] + s2[0], arrow[1] + s2[1], arrow[2] + dir[2] );
90 Targetable& m_targetable;
91 targetables_t* m_targets;
94 if ( m_targets != 0 ) {
95 m_targets->insert( &m_targetable );
99 if ( m_targets != 0 ) {
100 m_targets->erase( &m_targetable );
104 TargetedEntity( Targetable& targetable )
105 : m_targetable( targetable ), m_targets( getTargetables( "" ) ){
111 void targetnameChanged( const char* name ){
113 m_targets = getTargetables( name );
116 typedef MemberCaller<TargetedEntity, void(const char*), &TargetedEntity::targetnameChanged> TargetnameChangedCaller;
120 class TargetingEntity
122 targetables_t* m_targets;
125 m_targets( getTargetables( "" ) ){
127 void targetChanged( const char* target ){
128 m_targets = getTargetables( target );
130 typedef MemberCaller<TargetingEntity, void(const char*), &TargetingEntity::targetChanged> TargetChangedCaller;
132 typedef targetables_t::iterator iterator;
134 iterator begin() const {
135 if ( m_targets == 0 ) {
138 return m_targets->begin();
140 iterator end() const {
141 if ( m_targets == 0 ) {
144 return m_targets->end();
146 size_t size() const {
147 if ( m_targets == 0 ) {
150 return m_targets->size();
153 return m_targets == 0 || m_targets->empty();
159 template<typename Functor>
160 void TargetingEntity_forEach( const TargetingEntity& targets, const Functor& functor ){
161 for ( TargetingEntity::iterator i = targets.begin(); i != targets.end(); ++i )
163 functor( ( *i )->world_position() );
167 typedef std::map<std::size_t, TargetingEntity> TargetingEntities;
169 template<typename Functor>
170 void TargetingEntities_forEach( const TargetingEntities& targetingEntities, const Functor& functor ){
171 for ( TargetingEntities::const_iterator i = targetingEntities.begin(); i != targetingEntities.end(); ++i )
173 TargetingEntity_forEach( ( *i ).second, functor );
177 class TargetLinesPushBack
179 RenderablePointVector& m_targetLines;
180 const Vector3& m_worldPosition;
181 const VolumeTest& m_volume;
183 TargetLinesPushBack( RenderablePointVector& targetLines, const Vector3& worldPosition, const VolumeTest& volume ) :
184 m_targetLines( targetLines ), m_worldPosition( worldPosition ), m_volume( volume ){
186 void operator()( const Vector3& worldPosition ) const {
187 if ( m_volume.TestLine( segment_for_startend( m_worldPosition, worldPosition ) ) ) {
188 m_targetLines.push_back( PointVertex( reinterpret_cast<const Vertex3f&>( m_worldPosition ) ) );
189 m_targetLines.push_back( PointVertex( reinterpret_cast<const Vertex3f&>( worldPosition ) ) );
194 class TargetKeys : public Entity::Observer
196 TargetingEntities m_targetingEntities;
197 Callback<void()> m_targetsChanged;
199 bool readTargetKey( const char* key, std::size_t& index ){
200 if ( string_equal_n( key, "target", 6 ) ) {
202 if ( string_empty( key + 6 ) || string_parse_size( key + 6, index ) ) {
206 if ( string_equal( key, "killtarget" ) ) {
213 void setTargetsChanged( const Callback<void()>& targetsChanged ){
214 m_targetsChanged = targetsChanged;
216 void targetsChanged(){
220 void insert( const char* key, EntityKeyValue& value ){
222 if ( readTargetKey( key, index ) ) {
223 TargetingEntities::iterator i = m_targetingEntities.insert( TargetingEntities::value_type( index, TargetingEntity() ) ).first;
224 value.attach( TargetingEntity::TargetChangedCaller( ( *i ).second ) );
228 void erase( const char* key, EntityKeyValue& value ){
230 if ( readTargetKey( key, index ) ) {
231 TargetingEntities::iterator i = m_targetingEntities.find( index );
232 value.detach( TargetingEntity::TargetChangedCaller( ( *i ).second ) );
233 m_targetingEntities.erase( i );
237 const TargetingEntities& get() const {
238 return m_targetingEntities;
244 class RenderableTargetingEntity
246 TargetingEntity& m_targets;
247 mutable RenderablePointVector m_target_lines;
249 static Shader* m_state;
251 RenderableTargetingEntity( TargetingEntity& targets )
252 : m_targets( targets ), m_target_lines( GL_LINES ){
254 void compile( const VolumeTest& volume, const Vector3& world_position ) const {
255 m_target_lines.clear();
256 m_target_lines.reserve( m_targets.size() * 2 );
257 TargetingEntity_forEach( m_targets, TargetLinesPushBack( m_target_lines, world_position, volume ) );
259 void render( Renderer& renderer, const VolumeTest& volume, const Vector3& world_position ) const {
260 if ( !m_targets.empty() ) {
261 compile( volume, world_position );
262 if ( !m_target_lines.empty() ) {
263 renderer.addRenderable( m_target_lines, g_matrix4_identity );
269 class RenderableTargetingEntities
271 const TargetingEntities& m_targets;
272 mutable RenderablePointVector m_target_lines;
274 static Shader* m_state;
276 RenderableTargetingEntities( const TargetingEntities& targets )
277 : m_targets( targets ), m_target_lines( GL_LINES ){
279 void compile( const VolumeTest& volume, const Vector3& world_position ) const {
280 m_target_lines.clear();
281 TargetingEntities_forEach( m_targets, TargetLinesPushBack( m_target_lines, world_position, volume ) );
283 void render( Renderer& renderer, const VolumeTest& volume, const Vector3& world_position ) const {
284 if ( !m_targets.empty() ) {
285 compile( volume, world_position );
286 if ( !m_target_lines.empty() ) {
287 renderer.addRenderable( m_target_lines, g_matrix4_identity );
294 class TargetableInstance :
295 public SelectableInstance,
297 public Entity::Observer
299 mutable Vertex3f m_position;
300 EntityKeyValues& m_entity;
301 TargetKeys m_targeting;
302 TargetedEntity m_targeted;
303 RenderableTargetingEntities m_renderable;
307 const scene::Path& path,
308 scene::Instance* parent,
310 InstanceTypeCastTable& casts,
311 EntityKeyValues& entity,
312 Targetable& targetable
314 SelectableInstance( path, parent, instance, casts ),
316 m_targeted( targetable ),
317 m_renderable( m_targeting.get() ){
318 m_entity.attach( *this );
319 m_entity.attach( m_targeting );
321 ~TargetableInstance(){
322 m_entity.detach( m_targeting );
323 m_entity.detach( *this );
326 void setTargetsChanged( const Callback<void()>& targetsChanged ){
327 m_targeting.setTargetsChanged( targetsChanged );
329 void targetsChanged(){
330 m_targeting.targetsChanged();
333 void insert( const char* key, EntityKeyValue& value ){
334 if ( string_equal( key, g_targetable_nameKey ) ) {
335 value.attach( TargetedEntity::TargetnameChangedCaller( m_targeted ) );
338 void erase( const char* key, EntityKeyValue& value ){
339 if ( string_equal( key, g_targetable_nameKey ) ) {
340 value.detach( TargetedEntity::TargetnameChangedCaller( m_targeted ) );
344 const Vector3& world_position() const {
346 const AABB& bounds = Instance::worldAABB();
347 if ( aabb_valid( bounds ) ) {
348 return bounds.origin;
351 const AABB& childBounds = Instance::childBounds();
352 if ( aabb_valid( childBounds ) ) {
353 return childBounds.origin;
356 return vector4_to_vector3( localToWorld().t() );
359 void render( Renderer& renderer, const VolumeTest& volume ) const {
360 renderer.SetState( m_entity.getEntityClass().m_state_wire, Renderer::eWireframeOnly );
361 renderer.SetState( m_entity.getEntityClass().m_state_wire, Renderer::eFullMaterials );
362 m_renderable.render( renderer, volume, world_position() );
365 const TargetingEntities& getTargeting() const {
366 return m_targeting.get();
371 class RenderableConnectionLines : public Renderable
373 typedef std::set<TargetableInstance*> TargetableInstances;
374 TargetableInstances m_instances;
376 void attach( TargetableInstance& instance ){
377 ASSERT_MESSAGE( m_instances.find( &instance ) == m_instances.end(), "cannot attach instance" );
378 m_instances.insert( &instance );
380 void detach( TargetableInstance& instance ){
381 ASSERT_MESSAGE( m_instances.find( &instance ) != m_instances.end(), "cannot detach instance" );
382 m_instances.erase( &instance );
385 void renderSolid( Renderer& renderer, const VolumeTest& volume ) const {
386 for ( TargetableInstances::const_iterator i = m_instances.begin(); i != m_instances.end(); ++i )
388 if ( ( *i )->path().top().get().visible() ) {
389 ( *i )->render( renderer, volume );
393 void renderWireframe( Renderer& renderer, const VolumeTest& volume ) const {
394 renderSolid( renderer, volume );
398 typedef Static<RenderableConnectionLines> StaticRenderableConnectionLines;