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//
// Copyright (c) 2009-2010 Mikko Mononen memon@inside.org
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would be
// appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.
//
#include <math.h>
#include <stdio.h>
#include <string.h>
#include <float.h>
#include "SDL.h"
#include "SDL_opengl.h"
#ifdef __APPLE__
# include <OpenGL/glu.h>
#else
# include <GL/glu.h>
#endif
#include "imgui.h"
#include "OffMeshConnectionTool.h"
#include "InputGeom.h"
#include "Sample.h"
#include "Recast.h"
#include "RecastDebugDraw.h"
#include "DetourDebugDraw.h"
#ifdef WIN32
# define snprintf _snprintf
#endif
OffMeshConnectionTool::OffMeshConnectionTool() :
m_sample(0),
m_hitPosSet(0),
m_bidir(true),
m_oldFlags(0)
{
}
OffMeshConnectionTool::~OffMeshConnectionTool()
{
if (m_sample)
{
m_sample->setNavMeshDrawFlags(m_oldFlags);
}
}
void OffMeshConnectionTool::init(Sample* sample)
{
if (m_sample != sample)
{
m_sample = sample;
m_oldFlags = m_sample->getNavMeshDrawFlags();
m_sample->setNavMeshDrawFlags(m_oldFlags & ~DU_DRAWNAVMESH_OFFMESHCONS);
}
}
void OffMeshConnectionTool::reset()
{
m_hitPosSet = false;
}
void OffMeshConnectionTool::handleMenu()
{
if (imguiCheck("One Way", !m_bidir))
m_bidir = false;
if (imguiCheck("Bidirectional", m_bidir))
m_bidir = true;
}
void OffMeshConnectionTool::handleClick(const float* /*s*/, const float* p, bool shift)
{
if (!m_sample) return;
InputGeom* geom = m_sample->getInputGeom();
if (!geom) return;
if (shift)
{
// Delete
// Find nearest link end-point
float nearestDist = FLT_MAX;
int nearestIndex = -1;
const float* verts = geom->getOffMeshConnectionVerts();
for (int i = 0; i < geom->getOffMeshConnectionCount()*2; ++i)
{
const float* v = &verts[i*3];
float d = rcVdistSqr(p, v);
if (d < nearestDist)
{
nearestDist = d;
nearestIndex = i/2; // Each link has two vertices.
}
}
// If end point close enough, delete it.
if (nearestIndex != -1 &&
sqrtf(nearestDist) < m_sample->getAgentRadius())
{
geom->deleteOffMeshConnection(nearestIndex);
}
}
else
{
// Create
if (!m_hitPosSet)
{
rcVcopy(m_hitPos, p);
m_hitPosSet = true;
}
else
{
const unsigned char area = SAMPLE_POLYAREA_JUMP;
const unsigned short flags = SAMPLE_POLYFLAGS_JUMP;
geom->addOffMeshConnection(m_hitPos, p, m_sample->getAgentRadius(), m_bidir ? 1 : 0, area, flags);
m_hitPosSet = false;
}
}
}
void OffMeshConnectionTool::handleToggle()
{
}
void OffMeshConnectionTool::handleStep()
{
}
void OffMeshConnectionTool::handleUpdate(const float /*dt*/)
{
}
void OffMeshConnectionTool::handleRender()
{
duDebugDraw& dd = m_sample->getDebugDraw();
const float s = m_sample->getAgentRadius();
if (m_hitPosSet)
duDebugDrawCross(&dd, m_hitPos[0],m_hitPos[1]+0.1f,m_hitPos[2], s, duRGBA(0,0,0,128), 2.0f);
InputGeom* geom = m_sample->getInputGeom();
if (geom)
geom->drawOffMeshConnections(&dd, true);
}
void OffMeshConnectionTool::handleRenderOverlay(double* proj, double* model, int* view)
{
GLdouble x, y, z;
// Draw start and end point labels
if (m_hitPosSet && gluProject((GLdouble)m_hitPos[0], (GLdouble)m_hitPos[1], (GLdouble)m_hitPos[2],
model, proj, view, &x, &y, &z))
{
imguiDrawText((int)x, (int)(y-25), IMGUI_ALIGN_CENTER, "Start", imguiRGBA(0,0,0,220));
}
// Tool help
const int h = view[3];
if (!m_hitPosSet)
{
imguiDrawText(280, h-40, IMGUI_ALIGN_LEFT, "LMB: Create new connection. SHIFT+LMB: Delete existing connection, click close to start or end point.", imguiRGBA(255,255,255,192));
}
else
{
imguiDrawText(280, h-40, IMGUI_ALIGN_LEFT, "LMB: Set connection end point and finish.", imguiRGBA(255,255,255,192));
}
}
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