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285 lines
9.4 KiB
C++
285 lines
9.4 KiB
C++
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//****************************************************************************
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//* MODULE: Gel/Components
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//* FILENAME: RibbonComponent.cpp
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//* OWNER: Dan
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//* CREATION DATE: 5/20/3
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//****************************************************************************
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#include <gel/components/ribboncomponent.h>
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#include <gel/components/skeletoncomponent.h>
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#include <gel/collision/collcache.h>
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#include <gel/object/compositeobject.h>
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#include <gel/scripting/checksum.h>
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#include <gel/scripting/script.h>
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#include <gel/scripting/struct.h>
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#include <sk/engine/feeler.h>
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#define MESSAGE(a) { printf("M:%s:%i: %s\n", __FILE__ + 15, __LINE__, a); }
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#define DUMPI(a) { printf("D:%s:%i: " #a " = %i\n", __FILE__ + 15, __LINE__, a); }
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#define DUMPB(a) { printf("D:%s:%i: " #a " = %s\n", __FILE__ + 15, __LINE__, a ? "true" : "false"); }
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#define DUMPF(a) { printf("D:%s:%i: " #a " = %g\n", __FILE__ + 15, __LINE__, a); }
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#define DUMPE(a) { printf("D:%s:%i: " #a " = %e\n", __FILE__ + 15, __LINE__, a); }
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#define DUMPS(a) { printf("D:%s:%i: " #a " = %s\n", __FILE__ + 15, __LINE__, a); }
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#define DUMPP(a) { printf("D:%s:%i: " #a " = %p\n", __FILE__ + 15, __LINE__, a); }
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#define DUMPV(a) { printf("D:%s:%i: " #a " = %g, %g, %g\n", __FILE__ + 15, __LINE__, (a)[X], (a)[Y], (a)[Z]); }
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#define DUMP4(a) { printf("D:%s:%i: " #a " = %g, %g, %g, %g\n", __FILE__ + 15, __LINE__, (a)[X], (a)[Y], (a)[Z], (a)[W]); }
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#define DUMPM(a) { DUMP4(a[X]); DUMP4(a[Y]); DUMP4(a[Z]); DUMP4(a[W]); }
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#define DUMP2(a) { printf("D:%s:%i " #a " = ", __FILE__ + 15, __LINE__); for (int n = 32; n--; ) { printf("%c", ((a) & (1 << n)) ? '1' : '0'); } printf("\n"); }
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#define MARK { printf("K:%s:%i: %s\n", __FILE__ + 15, __LINE__, __PRETTY_FUNCTION__); }
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#define PERIODIC(n) for (static int p__ = 0; (p__ = ++p__ % (n)) == 0; )
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namespace Obj
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{
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/******************************************************************/
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/* */
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/* */
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/******************************************************************/
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CBaseComponent* CRibbonComponent::s_create()
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{
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return static_cast< CBaseComponent* >( new CRibbonComponent );
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}
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/******************************************************************/
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/* */
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/* */
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/******************************************************************/
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CRibbonComponent::CRibbonComponent() : CBaseComponent()
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{
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SetType( CRC_RIBBON );
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mp_links = NULL;
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m_last_frame_length = 0.0f;
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}
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/******************************************************************/
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/* */
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/* */
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/******************************************************************/
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CRibbonComponent::~CRibbonComponent()
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{
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if (mp_links)
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{
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delete mp_links;
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mp_links = NULL;
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}
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}
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/******************************************************************/
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/* */
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/* */
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/******************************************************************/
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void CRibbonComponent::InitFromStructure( Script::CStruct* pParams )
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{
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pParams->GetChecksum(CRCD(0xcab94088, "bone"), &m_bone_name, Script::ASSERT);
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pParams->GetInteger(CRCD(0x69feef91, "num_links"), &m_num_links, Script::ASSERT);
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pParams->GetFloat(CRCD(0x9f4625c2, "link_length"), &m_link_length, Script::ASSERT);
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pParams->GetChecksum(CRCD(0x99a9b716, "color"), &m_color, Script::ASSERT);
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mp_links = new SLink [ m_num_links ];
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for (int n = m_num_links; n--; )
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{
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mp_links[n].p.Set();
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mp_links[n].last_p.Set();
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}
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}
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/******************************************************************/
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/* */
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/* */
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/******************************************************************/
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void CRibbonComponent::Finalize()
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{
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mp_skeleton_component = GetSkeletonComponentFromObject(GetObject());
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Dbg_Assert(mp_skeleton_component);
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}
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/******************************************************************/
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/* */
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/* */
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/******************************************************************/
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void CRibbonComponent::RefreshFromStructure( Script::CStruct* pParams )
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{
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InitFromStructure(pParams);
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}
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/******************************************************************/
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/* */
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/* */
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/******************************************************************/
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void CRibbonComponent::Update()
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{
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float frame_length = Tmr::FrameLength();
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// update link positions based on velocity
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for (int n = m_num_links; n--; )
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{
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Mth::Vector vel = mp_links[n].p - mp_links[n].last_p;
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vel *= 1.0f / m_last_frame_length;
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// damp
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vel -= 10.0f * frame_length * vel;
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// momentum
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mp_links[n].next_p = mp_links[n].p + frame_length * vel;
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// gravity
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mp_links[n].next_p[Y] -= 800.0f * frame_length * frame_length;
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}
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// fetch bone position
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Mth::Vector bone_p;
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mp_skeleton_component->GetBonePosition(m_bone_name, &bone_p);
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bone_p = GetObject()->GetMatrix().Rotate(bone_p);
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bone_p += GetObject()->GetPos();
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// update link constraints
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for (int c = 20; c--; )
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{
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// first link special case
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float length = (mp_links[0].next_p - bone_p).Length();
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Mth::Vector axis = (mp_links[0].next_p - bone_p) * (1.0f / length);
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float adjustment = m_link_length - length;
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mp_links[0].next_p += adjustment * axis;
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// second and subsequent links
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for (int n = 1; n < m_num_links; n++)
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{
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float length = (mp_links[n].next_p - mp_links[n - 1].next_p).Length();
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Mth::Vector axis = (mp_links[n].next_p - mp_links[n - 1].next_p) * (1.0f / length);
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float adjustment = 0.5f * (m_link_length - length);
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// hack
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if (length > 20.0f * m_link_length)
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{
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CallMemberFunction(CRCD(0x796084f4, "Ribbon_Reset"), NULL, NULL);
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return;
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}
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mp_links[n].next_p += adjustment * axis;
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mp_links[n - 1].next_p -= adjustment * axis;
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}
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}
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#if 0
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// cheap collision detection
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float min_y = GetObject()->GetPos()[Y] + 0.1f;
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for (int n = m_num_links; n--; )
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{
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mp_links[n].next_p[Y] = Mth::ClampMin(mp_links[n].next_p[Y], min_y);
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}
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#else
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Mth::CBBox bbox;
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Nx::CCollCache* p_coll_cache = Nx::CCollCacheManager::sCreateCollCache();
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for (int n = m_num_links; n--; )
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{
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bbox.AddPoint(mp_links[n].p);
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bbox.AddPoint(mp_links[n].next_p);
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}
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p_coll_cache->Update(bbox);
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CFeeler feeler;
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feeler.SetCache(p_coll_cache);
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// real collision detection
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for (int n = m_num_links; n--; )
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{
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feeler.m_start = mp_links[n].p;
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feeler.m_end = mp_links[n].next_p;
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if (!feeler.GetCollision()) continue;
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Mth::Vector movement = mp_links[n].next_p - mp_links[n].p;
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mp_links[n].next_p = feeler.GetPoint() + 0.1f * feeler.GetNormal();
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// assume no additional collision
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movement *= 1.0f - feeler.GetDist();
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movement.ProjectToPlane(feeler.GetNormal());
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mp_links[n].next_p += movement;
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}
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Nx::CCollCacheManager::sDestroyCollCache(p_coll_cache);
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#endif
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// update state
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for (int n = m_num_links; n--; )
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{
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mp_links[n].last_p = mp_links[n].p;
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mp_links[n].p = mp_links[n].next_p;
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}
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m_last_frame_length = frame_length;
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// debug draw
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Gfx::AddDebugLine(bone_p, mp_links[0].p, m_color, 0, 1);
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for (int n = 1; n < m_num_links; n++)
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{
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Gfx::AddDebugLine(mp_links[n].p, mp_links[n - 1].p, m_color, 0, 1);
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}
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}
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/******************************************************************/
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/* */
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/* */
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/******************************************************************/
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CBaseComponent::EMemberFunctionResult CRibbonComponent::CallMemberFunction( uint32 Checksum, Script::CStruct* pParams, Script::CScript* pScript )
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{
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switch ( Checksum )
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{
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case CRCC(0x796084f4, "Ribbon_Reset"):
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{
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MESSAGE("Resetting");
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Mth::Vector bone_p;
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mp_skeleton_component->GetBonePosition(m_bone_name, &bone_p);
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bone_p = GetObject()->GetMatrix().Rotate(bone_p);
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bone_p += GetObject()->GetPos();
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for (int n = m_num_links; n--; )
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{
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mp_links[n].p = bone_p;
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mp_links[n].last_p = bone_p;
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mp_links[n].p[Y] += 0.1f * n;
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mp_links[n].last_p[Y] += 0.1f * n;
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}
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break;
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}
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default:
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return CBaseComponent::MF_NOT_EXECUTED;
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}
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return CBaseComponent::MF_TRUE;
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}
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/******************************************************************/
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/* */
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/* */
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/******************************************************************/
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void CRibbonComponent::GetDebugInfo(Script::CStruct *p_info)
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{
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#ifdef __DEBUG_CODE__
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Dbg_MsgAssert(p_info,("NULL p_info sent to CRibbonComponent::GetDebugInfo"));
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CBaseComponent::GetDebugInfo(p_info);
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#endif
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}
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}
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