double cTerrainGen2D::BuildSteps(double width, const tParams& params, cRand& rand, std::vector<float>& out_data)
{
double spacing_min = params[eParamsStepSpacingMin];
double spacing_max = params[eParamsStepSpacingMax];
double step_h0_min = params[eParamsStepHeight0Min];
double step_h0_max = params[eParamsStepHeight0Max];
double step_h1_min = params[eParamsStepHeight1Min];
double step_h1_max = params[eParamsStepHeight1Max];
double total_w = 0;
while (total_w < width)
{
double min_h = 0;
double max_h = 0;
bool valid_h0 = (step_h0_min != 0 || step_h0_max != 0);
bool valid_h1 = (step_h1_min != 0 || step_h1_max != 0);
if (valid_h0 && valid_h1)
{
bool heads = rand.FlipCoin();
min_h = (heads) ? step_h0_min : step_h1_min;
max_h = (heads) ? step_h0_max : step_h1_max;
}
else if (valid_h0)
{
min_h = step_h0_min;
max_h = step_h0_max;
}
else
{
min_h = step_h1_min;
max_h = step_h1_max;
}
double w = rand.RandDouble(spacing_min, spacing_max);
double h = rand.RandDouble(min_h, max_h);
double curr_w = AddStep(w, h, out_data);
total_w += curr_w;
}
return total_w;
}
double cTerrainGen2D::BuildCliffs(double width, const tParams& params, cRand& rand, std::vector<float>& out_data)
{
double spacing_min = params[eParamsCliffSpacingMin];
double spacing_max = params[eParamsCliffSpacingMax];
double cliff_h0_min = params[eParamsCliffHeight0Min];
double cliff_h0_max = params[eParamsCliffHeight0Max];
double cliff_h1_min = params[eParamsCliffHeight1Min];
double cliff_h1_max = params[eParamsCliffHeight1Max];
int mini_count_max = static_cast<int>(params[eParamsCliffMiniCountMax]);
double bump_h_min = params[eParamsBumpHeightMin];
double bump_h_max = params[eParamsBumpHeightMax];
const double delta_range = std::abs(params[eParamsSlopeDeltaRange]);
const double delta_min = params[eParamsSlopeDeltaMin];
const double delta_max = params[eParamsSlopeDeltaMax];
int beg_idx = static_cast<int>(out_data.size());
double total_w = 0;
while (total_w < width)
{
double min_h = 0;
double max_h = 0;
bool valid_h0 = (cliff_h0_min != 0 || cliff_h0_max != 0);
bool valid_h1 = (cliff_h1_min != 0 || cliff_h1_max != 0);
if (valid_h0 && valid_h1)
{
bool heads = rand.FlipCoin();
min_h = (heads) ? cliff_h0_min : cliff_h1_min;
max_h = (heads) ? cliff_h0_max : cliff_h1_max;
}
else if (valid_h0)
{
min_h = cliff_h0_min;
max_h = cliff_h0_max;
}
else
{
min_h = cliff_h1_min;
max_h = cliff_h1_max;
}
double w = rand.RandDouble(spacing_min, spacing_max);
double h = rand.RandDouble(min_h, max_h);
double curr_w = 0;
double curr_delta_h = 0;
int num_mini = rand.RandInt(0, mini_count_max + 1);
for (int i = 0; i < num_mini + 1; ++i)
{
const double mini_w = (i == 0) ? w : 0.1;
double mini_h = rand.RandDouble(curr_delta_h, h);
mini_h = (i == num_mini) ? h : mini_h;
double dh = mini_h - curr_delta_h;
curr_w += AddStep(mini_w, dh, out_data);
curr_delta_h = mini_h;
}
total_w += curr_w;
}
int end_idx = static_cast<int>(out_data.size());
OverlaySlopes(delta_range, delta_min, delta_max, 0, beg_idx, end_idx, rand, out_data);
OverlayBumps(bump_h_min, bump_h_max, beg_idx, end_idx, rand, out_data);
return total_w;
}
void SceneBuilder::AddStep(const RenderStepWrapper& step, ObjectHint hint)
{
AddStep(step, std::vector<ObjectHint>{hint});
}
