axmol/extensions/physics-nodes/CCPhysicsDebugNodeBox2D.cpp

/*
* Copyright (c) 2021 @aismann; Peter Eismann, Germany; dreifrankensoft
 *
 * 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 "CCPhysicsDebugNodeBox2D.h"
#include <stdio.h>
#include <stdarg.h>
#include <string.h>

#include <stdbool.h>
#include <limits.h>


USING_NS_CC;


#if defined(CC_PLATFORM_PC)
extern cocos2d::Label* labelDebugDraw;
#endif

#define BUFFER_OFFSET(x)  ((const void*) (x))


DebugDraw::DebugDraw()
{
    drawBP = DrawNode::create();
}

DebugDraw::~DebugDraw()
{
}

void DebugDraw::initShader( void )
{
    // initShader is unsupported
}

cocos2d::DrawNode* DebugDraw::GetDrawNode()
{
    return drawBP;
}

void DebugDraw::SetDrawNode(cocos2d::DrawNode* drawNode)
{
    CCASSERT(!drawBP, "drawBP is not NULL");
    drawBP = drawNode;
}


void DebugDraw::DrawPolygon(const b2Vec2* verts, int vertexCount, const b2Color& color)
{
    Vec2* vec = new (std::nothrow) Vec2[vertexCount];
    for (size_t i = 0; i < vertexCount; i++) {
        vec[i] = Vec2(verts[i].x * mRatio, verts[i].y * mRatio) + debugNodeOffset;
    }
//    drawBP->drawPolygon(vec, vertexCount, Color4F(color.r, color.g, color.b, color.a), 1, Color4F(color.r, color.g, color.b, color.a));
    drawBP->drawPolygon(vec, vertexCount, Color4F::BLACK, 0.4f, Color4F(color.r, color.g, color.b, color.a));
}

void DebugDraw::DrawSolidPolygon(const b2Vec2* verts, int vertexCount, const b2Color& color)
{
    Vec2* vec = new (std::nothrow) Vec2[vertexCount];
    for (size_t i = 0; i < vertexCount; i++) {
        vec[i] = Vec2(verts[i].x * mRatio, verts[i].y * mRatio) + debugNodeOffset;
    }
    drawBP->drawPolygon(vec, vertexCount, Color4F(color.r / 2, color.g / 2, color.b / 2, color.a), 0.4f, Color4F(color.r, color.g, color.b, color.a));
    //drawBP->drawSolidPoly(vec, vertexCount, Color4F(color.r, color.g, color.b, color.a));
}

void DebugDraw::DrawCircle(const b2Vec2& center, float radius, const b2Color& color)
{
    drawBP->drawCircle(Vec2(center.x * mRatio, center.y * mRatio) + debugNodeOffset, radius * mRatio, CC_DEGREES_TO_RADIANS(0), 30, true, 1.0f,
        1.0f, Color4F(color.r, color.g, color.b, color.a));
}

void DebugDraw::DrawSolidCircle(const b2Vec2& center, float radius, const b2Vec2& axis, const b2Color& color)
{
    // DrawSolidCircle Maybe have to fix later
    drawBP->drawCircle(Vec2(center.x * mRatio, center.y * mRatio) + debugNodeOffset, radius * mRatio, CC_DEGREES_TO_RADIANS(0), 20, true, 1.0f, 1.0f, Color4F(color.r, color.g, color.b, color.a));
}

void DebugDraw::DrawSegment(const b2Vec2& p1, const b2Vec2& p2, const b2Color& color)
{
    drawBP->drawLine(Vec2(p1.x * mRatio, p1.y * mRatio) + debugNodeOffset, Vec2(p2.x * mRatio, p2.y * mRatio) + debugNodeOffset, Color4F(color.r, color.g, color.b, color.a));
}

void DebugDraw::DrawTransform(const b2Transform& xf)
{
    b2Vec2 p1 = xf.p, p2;
    const float k_axisScale = 0.4f;
    p2 = p1 + k_axisScale * xf.q.GetXAxis();
    DrawSegment(p1, p2, b2Color(1, 0, 0));

    p2 = p1 + k_axisScale * xf.q.GetYAxis();
    DrawSegment(p1, p2, b2Color(0, 1, 0));
}

void DebugDraw::DrawPoint(const b2Vec2& p, float size, const b2Color& color)
{
    drawBP->drawPoint(Vec2(p.x * mRatio, p.y * mRatio) + debugNodeOffset, size, Color4F(color.r, color.g, color.b, color.a));
}

void DebugDraw::DrawString(int x, int y, const char* string, ...)
{
#if defined(CC_PLATFORM_PC)
    // x,y is unsupported
    std::string s = std::string(string);
    labelDebugDraw->setString(s.c_str());
#endif
}

void DebugDraw::DrawString(const b2Vec2& pw, const char* string, ...)
{
#if defined(CC_PLATFORM_PC)
    // pw is unsupported
    std::string s = std::string(string);
    labelDebugDraw->setString(s.c_str());
#endif
}



void DebugDraw::DrawAABB(b2AABB* aabb, const b2Color& color)
{
    b2Vec2 p1 = aabb->lowerBound;
    b2Vec2 p2 = b2Vec2(aabb->upperBound.x, aabb->lowerBound.y);
    b2Vec2 p3 = aabb->upperBound;
    b2Vec2 p4 = b2Vec2(aabb->lowerBound.x, aabb->upperBound.y);

    Vec2 verts[] = {
    Vec2(p1.x * mRatio, p1.y * mRatio) + debugNodeOffset ,
    Vec2(p2.x * mRatio, p2.y * mRatio) + debugNodeOffset ,
    Vec2(p3.x * mRatio, p3.y * mRatio) + debugNodeOffset ,
    Vec2(p4.x * mRatio, p4.y * mRatio) + debugNodeOffset ,
    };
    drawBP->drawPolygon(verts, sizeof(verts) / sizeof(verts[0]), Color4F(color.r / 2, color.g / 2, color.b / 2, 0), 0.4f, Color4F(color.r, color.g, color.b, color.a));
}

void DebugDraw::Flush()
{
    // Flush is unsupported
}