2 files changed, 200 insertions, 0 deletions
diff --git a/src/core/Ropes.cpp b/src/core/Ropes.cpp
new file mode 100644
index 00000000..4c57f190
--- /dev/null
+++ b/src/core/Ropes.cpp
@@ -0,0 +1,169 @@
+#include "common.h"
+
+#include "Timer.h"
+#include "ModelIndices.h"
+#include "Streaming.h"
+#include "CopPed.h"
+#include "Population.h"
+#include "RenderBuffer.h"
+#include "Camera.h"
+#include "Ropes.h"
+
+CRope CRopes::aRopes[8];
+
+RwImVertexIndex RopeIndices[64] = {
+	0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7,
+	7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15,
+	15, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23,
+	23, 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 30, 30, 31,
+	31, 32	// unused
+};
+
+void
+CRope::Update(void)
+{
+	int i;
+	float step = Pow(0.85f, CTimer::GetTimeStep());
+	if(!m_bWasRegistered && CTimer::GetTimeInMilliseconds() > m_updateTimer){
+		m_speed[0].z -= 0.0015f*CTimer::GetTimeStep();
+		m_pos[0] += m_speed[0]*CTimer::GetTimeStep();
+	}
+	for(i = 1; i < ARRAY_SIZE(m_pos); i++){
+		CVector prevPos = m_pos[i];
+		m_pos[i] += m_speed[i]*step*CTimer::GetTimeStep();
+		m_pos[0].z -= 0.05f*CTimer::GetTimeStep();
+		CVector dist = m_pos[i] - m_pos[i-1];
+		m_pos[i] = m_pos[i-1] + dist/dist.Magnitude()*0.625f;
+		m_speed[i] = (m_pos[i] - prevPos)/CTimer::GetTimeStep();
+	}
+	if(!m_bWasRegistered && m_pos[0].z < 0.0f)
+		m_bActive = false;
+	m_bWasRegistered = true;
+}
+
+void
+CRope::Render(void)
+{
+	int i;
+	int numVerts = 0;
+	if(!TheCamera.IsSphereVisible(m_pos[16], 20.0f))
+		return;
+
+	for(i = 0; i < ARRAY_SIZE(m_pos); i++){
+		RwIm3DVertexSetRGBA(&TempBufferRenderVertices[i], 128, 128, 128, 100);
+		RwIm3DVertexSetPos(&TempBufferRenderVertices[i], m_pos[i].x, m_pos[i].y, m_pos[i].z);
+	}
+
+	RwRenderStateSet(rwRENDERSTATEVERTEXALPHAENABLE, (void*)TRUE);
+	RwRenderStateSet(rwRENDERSTATESRCBLEND, (void*)rwBLENDSRCALPHA);
+	RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void*)rwBLENDINVSRCALPHA);
+	RwRenderStateSet(rwRENDERSTATETEXTURERASTER, nil);
+
+	if(RwIm3DTransform(TempBufferRenderVertices, ARRAY_SIZE(m_pos), nil, rwIM3D_VERTEXXYZ|rwIM3D_VERTEXRGBA)){
+		RwIm3DRenderIndexedPrimitive(rwPRIMTYPELINELIST, RopeIndices, 2*(ARRAY_SIZE(m_pos)-1));
+		RwIm3DEnd();
+	}
+}
+
+
+void
+CRopes::Init(void)
+{
+	int i;
+	for(i = 0; i < ARRAY_SIZE(aRopes); i++)
+		aRopes[i].m_bActive = false;
+}
+
+void
+CRopes::Update(void)
+{
+	int i;
+	for(i = 0; i < ARRAY_SIZE(aRopes); i++)
+		if(aRopes[i].m_bActive)
+			aRopes[i].Update();
+}
+
+void
+CRopes::Render(void)
+{
+	int i;
+	for(i = 0; i < ARRAY_SIZE(aRopes); i++)
+		if(aRopes[i].m_bActive)
+			aRopes[i].Render();
+}
+
+bool
+CRopes::RegisterRope(uintptr id, CVector pos, bool setUpdateTimer)
+{
+	int i, j;
+	for(i = 0; i < ARRAY_SIZE(aRopes); i++){
+		if(aRopes[i].m_bActive && aRopes[i].m_id == id){
+			aRopes[i].m_pos[0] = pos;
+			aRopes[i].m_speed[0] = CVector(0.0f, 0.0f, 0.0f);
+			aRopes[i].m_bWasRegistered = true;
+			return true;
+		}
+	}
+	for(i = 0; i < ARRAY_SIZE(aRopes); i++)
+		if(!aRopes[i].m_bActive){
+			aRopes[i].m_id = id;
+			aRopes[i].m_pos[0] = pos;
+			aRopes[i].m_speed[0] = CVector(0.0f, 0.0f, 0.0f);
+			aRopes[i].m_unk = false;
+			aRopes[i].m_bWasRegistered = true;
+			aRopes[i].m_updateTimer = setUpdateTimer ? CTimer::GetTimeInMilliseconds() + 20000 : 0;
+			for(j = 1; j < ARRAY_SIZE(CRope::m_pos); j++){
+				if(j & 1)
+					aRopes[i].m_pos[j] = aRopes[i].m_pos[j-1] + CVector(0.0f, 0.0f, 0.625f);
+				else
+					aRopes[i].m_pos[j] = aRopes[i].m_pos[j-1] - CVector(0.0f, 0.0f, 0.625f);
+				aRopes[i].m_speed[j] = CVector(0.0f, 0.0f, 0.0f);
+			}
+			aRopes[i].m_bActive = true;
+			return true;
+		}
+	return false;
+}
+
+void
+CRopes::SetSpeedOfTopNode(uintptr id, CVector speed)
+{
+	int i;
+	for(i = 0; i < ARRAY_SIZE(aRopes); i++)
+		if(aRopes[i].m_bActive && aRopes[i].m_id == id){
+			aRopes[i].m_speed[0] = speed;
+			return;
+		}
+}
+
+bool
+CRopes::FindCoorsAlongRope(uintptr id, float t, CVector *coors)
+{
+	int i, j;
+	float f;
+	for(i = 0; i < ARRAY_SIZE(aRopes); i++)
+		if(aRopes[i].m_bActive && aRopes[i].m_id == id){
+			t = (ARRAY_SIZE(CRope::m_pos)-1)*clamp(t, 0.0f, 0.999f);
+			j = t;
+			f = t - j; 
+			*coors = (1.0f-f)*aRopes[i].m_pos[j] + f*aRopes[i].m_pos[j+1];
+			return true;
+		}
+	return false;
+}
+
+bool
+CRopes::CreateRopeWithSwatComingDown(CVector pos)
+{
+	static uint32 ropeId = 0;
+
+	if(!CStreaming::HasModelLoaded(MI_SWAT) || !RegisterRope(ropeId+100, pos, true))
+		return false;
+	CCopPed *swat = (CCopPed*)CPopulation::AddPed(PEDTYPE_COP, COP_ARMY, pos);
+	swat->bUsesCollision = false;
+	swat->m_pRopeEntity = (CEntity*)1;
+	swat->m_nRopeID = 100 + ropeId;
+	CAnimManager::BlendAnimation(swat->GetClump(), ASSOCGRP_STD, ANIM_ABSEIL, 4.0f);
+	ropeId++;
+	return true;
+}
diff --git a/src/core/Ropes.h b/src/core/Ropes.h
new file mode 100644
index 00000000..7930fa98
--- /dev/null
+++ b/src/core/Ropes.h
@@ -0,0 +1,31 @@
+#pragma once
+
+class CRope
+{
+public:
+	bool m_bActive;
+	bool m_bWasRegistered;
+	bool m_unk;
+	uintptr m_id;
+	uint32 m_updateTimer;
+	CVector m_pos[32];
+	CVector m_speed[32];
+
+	void Update(void);
+	void Render(void);
+};
+
+class CRopes
+{
+	static CRope aRopes[8];
+
+public:
+
+	static void Init(void);
+	static void Update(void);
+	static void Render(void);
+	static bool RegisterRope(uintptr id, CVector pos, bool setUpdateTimer);
+	static void SetSpeedOfTopNode(uintptr id, CVector speed);
+	static bool FindCoorsAlongRope(uintptr id, float t, CVector *coors);
+	static bool CreateRopeWithSwatComingDown(CVector pos);
+};