// In build mode, find the block at the given screen position. Return the chunk and the
// data about it to the pointers.
chunk *gameDialog::FindSelectedSurface(int x, int y, ChunkOffsetCoord *coc, int *surfaceDir) {
ChunkShaderPicking *pickShader = ChunkShaderPicking::Make();
pickShader->EnableProgram();
pickShader->View(gViewMatrix);
pickShader->Projection(gProjectionMatrix);
glClearColor(0.0f, 0.0f, 0.0f, 0.0f); // Use black sky for picking
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
DrawLandscape(0, DL_Picking);
pickShader->DisableProgram();
unsigned char pixel[4];
glReadPixels(x,gViewport[3] - y, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, &pixel[0]);
if (pixel[0] == 0 && pixel[1] == 0 && pixel[2] == 0)
return 0; // Click on the sky, which is drawn black. No block will have this value (facing is 1-6).
PickingData coding;
coding.rgb[0] = pixel[0]; coding.rgb[1] = pixel[1]; coding.rgb[2] = pixel[2]; // Compensate for transformation in shader.
#if 0
gMsgWindow.Add("Pick (%d,%d,%d) facing %d, d(%d,%d,%d)", coding.bitmap.x, coding.bitmap.y, coding.bitmap.z,
coding.bitmap.facing, coding.bitmap.dx-1, coding.bitmap.dy-1, coding.bitmap.dz-1);
gMsgWindow.Add("RGB: %d,%d,%d", coding.rgb[0], coding.rgb[1], coding.rgb[2]);
#endif
ChunkCoord cc;
gPlayer.GetChunkCoord(&cc);
cc.x += coding.bitmap.dx-1;
cc.y += coding.bitmap.dy-1;
cc.z += coding.bitmap.dz-1;
chunk *cp = ChunkFind(&cc, false);
coc->x = coding.bitmap.x; coc->y = coding.bitmap.y; coc->z = coding.bitmap.z;
if (surfaceDir)
*surfaceDir = coding.bitmap.facing;
checkError("gameDialog::FindSelectedSurface");
return cp;
}
void LandscapeDebugNode::Draw()
{
if(0 == heightmap->Size())
return;
BindMaterial(0);
int32 index = 0;
for (int32 y = 0; y < heightmap->Size(); ++y)
{
for (int32 x = 0; x < heightmap->Size(); ++x)
{
debugVertices[index].position = GetPoint(x, y, heightmap->Data()[y * heightmap->Size() + x]);
debugVertices[index].texCoord = Vector2((float32)x / (float32)(heightmap->Size() - 1), (float32)y / (float32)(heightmap->Size() - 1));
index++;
}
}
int32 step = 1;
int32 indexIndex = 0;
int32 quadWidth = heightmap->Size();
for(int32 y = 0; y < heightmap->Size() - 1; y += step)
{
for(int32 x = 0; x < heightmap->Size() - 1; x += step)
{
debugIndices[indexIndex++] = x + y * quadWidth;
debugIndices[indexIndex++] = (x + step) + y * quadWidth;
debugIndices[indexIndex++] = x + (y + step) * quadWidth;
debugIndices[indexIndex++] = (x + step) + y * quadWidth;
debugIndices[indexIndex++] = (x + step) + (y + step) * quadWidth;
debugIndices[indexIndex++] = x + (y + step) * quadWidth;
}
}
debugRenderDataObject->SetStream(EVF_VERTEX, TYPE_FLOAT, 3, sizeof(LandscapeVertex), &debugVertices[0].position);
debugRenderDataObject->SetStream(EVF_TEXCOORD0, TYPE_FLOAT, 2, sizeof(LandscapeVertex), &debugVertices[0].texCoord);
#if defined(__DAVAENGINE_OPENGL__)
if (debugFlags & DEBUG_DRAW_GRID)
{
debugFlags &= ~DEBUG_DRAW_GRID;
DrawLandscape();
debugFlags |= DEBUG_DRAW_GRID;
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
RenderManager::Instance()->SetColor(1.0f, 1.f, 1.f, 1.f);
RenderManager::Instance()->SetRenderEffect(RenderManager::FLAT_COLOR);
RenderManager::Instance()->SetShader(0);
RenderManager::Instance()->FlushState();
}
#endif //#if defined(__DAVAENGINE_OPENGL__)
DrawLandscape();
#if defined(__DAVAENGINE_OPENGL__)
if (debugFlags & DEBUG_DRAW_ALL)
{
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
}
#endif //#if defined(__DAVAENGINE_OPENGL__)
if(cursor)
{
RenderManager::Instance()->AppendState(RenderStateBlock::STATE_BLEND);
eBlendMode src = RenderManager::Instance()->GetSrcBlend();
eBlendMode dst = RenderManager::Instance()->GetDestBlend();
RenderManager::Instance()->SetBlendMode(BLEND_SRC_ALPHA, BLEND_ONE_MINUS_SRC_ALPHA);
RenderManager::Instance()->SetDepthFunc(CMP_LEQUAL);
cursor->Prepare();
RenderManager::Instance()->HWDrawElements(PRIMITIVETYPE_TRIANGLELIST, (heightmap->Size() - 1) * (heightmap->Size() - 1) * 6, EIF_32, &debugIndices.front());
RenderManager::Instance()->SetDepthFunc(CMP_LESS);
RenderManager::Instance()->RemoveState(RenderStateBlock::STATE_BLEND);
RenderManager::Instance()->SetBlendMode(src, dst);
}
UnbindMaterial();
}
