From 9bb8ebaa1011dc1dc70e3d5bf70c9a55c44b976c Mon Sep 17 00:00:00 2001
From: Sergeanur <s.anureev@yandex.ua>
Date: Sat, 14 Nov 2020 22:13:32 +0200
Subject: Make collision code placement more like original (+ small fixes)

# Conflicts:
#	premake5.lua
#	src/CMakeLists.txt
#	src/collision/Collision.cpp
#	src/core/Collision.h
---
 src/collision/ColModel.cpp | 201 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 201 insertions(+)
 create mode 100644 src/collision/ColModel.cpp

(limited to 'src/collision/ColModel.cpp')

diff --git a/src/collision/ColModel.cpp b/src/collision/ColModel.cpp
new file mode 100644
index 00000000..ba33c134
--- /dev/null
+++ b/src/collision/ColModel.cpp
@@ -0,0 +1,201 @@
+#include "common.h"
+#include "ColModel.h"
+#include "Collision.h"
+#include "Game.h"
+#include "Pools.h"
+
+CColModel::CColModel(void)
+{
+	numSpheres = 0;
+	spheres = nil;
+	numLines = 0;
+	lines = nil;
+	numBoxes = 0;
+	boxes = nil;
+	numTriangles = 0;
+	vertices = nil;
+	triangles = nil;
+	trianglePlanes = nil;
+	level = LEVEL_GENERIC;	// generic col slot
+	ownsCollisionVolumes = true;
+}
+
+CColModel::~CColModel(void)
+{
+	RemoveCollisionVolumes();
+	RemoveTrianglePlanes();
+}
+
+void*
+CColModel::operator new(size_t)
+{
+	CColModel* node = CPools::GetColModelPool()->New();
+	assert(node);
+	return node;
+}
+
+void
+CColModel::operator delete(void *p, size_t)
+{
+	CPools::GetColModelPool()->Delete((CColModel*)p);
+}
+
+void
+CColModel::RemoveCollisionVolumes(void)
+{
+	if(ownsCollisionVolumes){
+		RwFree(spheres);
+		RwFree(lines);
+		RwFree(boxes);
+		RwFree(vertices);
+		RwFree(triangles);
+		CCollision::RemoveTrianglePlanes(this);
+	}
+	numSpheres = 0;
+	numLines = 0;
+	numBoxes = 0;
+	numTriangles = 0;
+	spheres = nil;
+	lines = nil;
+	boxes = nil;
+	vertices = nil;
+	triangles = nil;
+}
+
+void
+CColModel::CalculateTrianglePlanes(void)
+{
+	// HACK: allocate space for one more element to stuff the link pointer into
+	trianglePlanes = (CColTrianglePlane*)RwMalloc(sizeof(CColTrianglePlane) * (numTriangles+1));
+	for(int i = 0; i < numTriangles; i++)
+		trianglePlanes[i].Set(vertices, triangles[i]);
+}
+
+void
+CColModel::RemoveTrianglePlanes(void)
+{
+	RwFree(trianglePlanes);
+	trianglePlanes = nil;
+}
+
+void
+CColModel::SetLinkPtr(CLink<CColModel*> *lptr)
+{
+	assert(trianglePlanes);
+	*(CLink<CColModel*>**)ALIGNPTR(&trianglePlanes[numTriangles]) = lptr;
+}
+
+CLink<CColModel*>*
+CColModel::GetLinkPtr(void)
+{
+	assert(trianglePlanes);
+	return *(CLink<CColModel*>**)ALIGNPTR(&trianglePlanes[numTriangles]);
+}
+
+void
+CColModel::GetTrianglePoint(CVector &v, int i) const
+{
+	v = vertices[i].Get();
+}
+
+CColModel&
+CColModel::operator=(const CColModel &other)
+{
+	int i;
+	int numVerts;
+
+	boundingSphere = other.boundingSphere;
+	boundingBox = other.boundingBox;
+
+	// copy spheres
+	if(other.numSpheres){
+		if(numSpheres != other.numSpheres){
+			numSpheres = other.numSpheres;
+			if(spheres)
+				RwFree(spheres);
+			spheres = (CColSphere*)RwMalloc(numSpheres*sizeof(CColSphere));
+		}
+		for(i = 0; i < numSpheres; i++)
+			spheres[i] = other.spheres[i];
+	}else{
+		numSpheres = 0;
+		if(spheres)
+			RwFree(spheres);
+		spheres = nil;
+	}
+
+	// copy lines
+	if(other.numLines){
+		if(numLines != other.numLines){
+			numLines = other.numLines;
+			if(lines)
+				RwFree(lines);
+			lines = (CColLine*)RwMalloc(numLines*sizeof(CColLine));
+		}
+		for(i = 0; i < numLines; i++)
+			lines[i] = other.lines[i];
+	}else{
+		numLines = 0;
+		if(lines)
+			RwFree(lines);
+		lines = nil;
+	}
+
+	// copy boxes
+	if(other.numBoxes){
+		if(numBoxes != other.numBoxes){
+			numBoxes = other.numBoxes;
+			if(boxes)
+				RwFree(boxes);
+			boxes = (CColBox*)RwMalloc(numBoxes*sizeof(CColBox));
+		}
+		for(i = 0; i < numBoxes; i++)
+			boxes[i] = other.boxes[i];
+	}else{
+		numBoxes = 0;
+		if(boxes)
+			RwFree(boxes);
+		boxes = nil;
+	}
+
+	// copy mesh
+	if(other.numTriangles){
+		// copy vertices
+		numVerts = 0;
+		for(i = 0; i < other.numTriangles; i++){
+			if(other.triangles[i].a > numVerts)
+				numVerts = other.triangles[i].a;
+			if(other.triangles[i].b > numVerts)
+				numVerts = other.triangles[i].b;
+			if(other.triangles[i].c > numVerts)
+				numVerts = other.triangles[i].c;
+		}
+		numVerts++;
+		if(vertices)
+			RwFree(vertices);
+		if(numVerts){
+			vertices = (CompressedVector*)RwMalloc(numVerts*sizeof(CompressedVector));
+			for(i = 0; i < numVerts; i++)
+				vertices[i] = other.vertices[i];
+		}
+
+		// copy triangles
+		if(numTriangles != other.numTriangles){
+			numTriangles = other.numTriangles;
+			if(triangles)
+				RwFree(triangles);
+			triangles = (CColTriangle*)RwMalloc(numTriangles*sizeof(CColTriangle));
+		}
+		for(i = 0; i < numTriangles; i++)
+			triangles[i] = other.triangles[i];
+	}else{
+		numTriangles = 0;
+		if(triangles)
+			RwFree(triangles);
+		triangles = nil;
+		if(vertices)
+			RwFree(vertices);
+		vertices = nil;
+	}
+	return *this;
+}
\ No newline at end of file
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