mirror of
https://github.com/recastnavigation/recastnavigation.git
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134 lines
3.3 KiB
C++
134 lines
3.3 KiB
C++
//
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// Copyright (c) 2009-2010 Mikko Mononen memon@inside.org
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software.
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it
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// freely, subject to the following restrictions:
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would be
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// appreciated but is not required.
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// 2. Altered source versions must be plainly marked as such, and must not be
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// misrepresented as being the original software.
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// 3. This notice may not be removed or altered from any source distribution.
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//
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#include "Tool_OffMeshConnection.h"
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#include "DetourDebugDraw.h"
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#include "InputGeom.h"
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#include "imguiHelpers.h"
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#include <imgui.h>
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void OffMeshConnectionTool::init(Sample* newSample)
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{
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if (sample == newSample)
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{
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return;
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}
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sample = newSample;
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oldFlags = sample->navMeshDrawFlags;
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sample->navMeshDrawFlags &= ~DU_DRAWNAVMESH_OFFMESHCONS;
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}
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void OffMeshConnectionTool::reset()
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{
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hitPosSet = false;
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}
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void OffMeshConnectionTool::drawMenuUI()
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{
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ImGui::Checkbox("Bidirectional", &bidirectional);
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}
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void OffMeshConnectionTool::onClick(const float* /*rayStartPos*/, const float* rayHitPos, bool shift)
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{
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if (!sample)
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{
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return;
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}
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InputGeom* geom = sample->inputGeometry;
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if (!geom)
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{
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return;
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}
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if (shift)
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{
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// Delete
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// Find nearest link end-point
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float nearestDist = FLT_MAX;
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int nearestIndex = -1;
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const std::vector<float> verts = geom->offmeshConnVerts;
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for (int i = 0; i < static_cast<int>(geom->offmeshConnId.size()) * 2; ++i)
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{
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const float distance = rcVdistSqr(rayHitPos, &verts[i * 3]);
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if (distance < nearestDist)
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{
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nearestDist = distance;
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nearestIndex = i / 2; // Each link has two vertices.
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}
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}
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// If end point close enough, delete it.
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if (nearestIndex != -1 && sqrtf(nearestDist) < sample->agentRadius)
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{
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geom->deleteOffMeshConnection(nearestIndex);
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}
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}
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else
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{
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// Create
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if (!hitPosSet)
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{
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rcVcopy(hitPos, rayHitPos);
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hitPosSet = true;
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}
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else
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{
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geom->addOffMeshConnection(
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hitPos,
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rayHitPos,
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sample->agentRadius,
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bidirectional ? 1 : 0,
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SAMPLE_POLYAREA_JUMP,
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SAMPLE_POLYFLAGS_JUMP);
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hitPosSet = false;
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}
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}
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}
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void OffMeshConnectionTool::render()
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{
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duDebugDraw& dd = sample->debugDraw;
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if (hitPosSet)
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{
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duDebugDrawCross(&dd, hitPos[0], hitPos[1] + 0.1f, hitPos[2], sample->agentRadius, duRGBA(0, 0, 0, 128), 2.0f);
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}
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if (InputGeom* geom = sample->inputGeometry)
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{
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geom->drawOffMeshConnections(&dd, true);
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}
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}
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void OffMeshConnectionTool::drawOverlayUI()
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{
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if (hitPosSet)
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{
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DrawWorldspaceText(hitPos[0], hitPos[1], hitPos[2], IM_COL32(0, 0, 0, 220), "Start", true, 25);
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}
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// Tool help
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const char* setMessage = "LMB: Set connection end point and finish.";
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const char* connectMessage = "LMB: Create new connection. SHIFT+LMB: Delete existing connection, click near start or end point.";
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DrawScreenspaceText(280, 40, IM_COL32(255, 255, 255, 192), hitPosSet ? setMessage : connectMessage);
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}
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