float PluginAudioProcessor::getParameter (int index)
{
switch (index) {
case noteLengthParam:
return getLerp (sequencer->getNoteLength(), 0, sequencer->getMaxNoteLength(), 0, 1.0);
case swingTicksParam:
return getLerp (sequencer->getSwingTicks(), 0, sequencer->getMaxSwingTicks(), 0, 1.0);
default: return 0.0f;
}
}
void PluginAudioProcessor::setParameter (int index, float newValue)
{
switch (index) {
case noteLengthParam:
newValue = getLerp (newValue, 0, 1.0, 0, sequencer->getMaxNoteLength());
sequencer->setNoteLength (newValue); break;
case swingTicksParam:
newValue = getLerp (newValue, 0, 1.0, 0, sequencer->getMaxSwingTicks());
sequencer->setSwingTicks (newValue); break;
default: break;
}
}
float MapgenCarpathian::terrainLevelAtPoint(s16 x, s16 z)
{
float ground = NoisePerlin2D(&noise_base->np, x, z, seed);
float height1 = NoisePerlin2D(&noise_height1->np, x, z, seed);
float height2 = NoisePerlin2D(&noise_height2->np, x, z, seed);
float height3 = NoisePerlin2D(&noise_height3->np, x, z, seed);
float height4 = NoisePerlin2D(&noise_height4->np, x, z, seed);
float hter = NoisePerlin2D(&noise_hills_terrain->np, x, z, seed);
float rter = NoisePerlin2D(&noise_ridge_terrain->np, x, z, seed);
float ster = NoisePerlin2D(&noise_step_terrain->np, x, z, seed);
float n_hills = NoisePerlin2D(&noise_hills->np, x, z, seed);
float n_ridge_mnt = NoisePerlin2D(&noise_ridge_mnt->np, x, z, seed);
float n_step_mnt = NoisePerlin2D(&noise_step_mnt->np, x, z, seed);
int height = -MAX_MAP_GENERATION_LIMIT;
for (s16 y = 1; y <= 30; y++) {
float mnt_var = NoisePerlin3D(&noise_mnt_var->np, x, y, z, seed);
// Gradient & shallow seabed
s32 grad = (y < water_level) ? grad_wl + (water_level - y) * 3 : 1 - y;
// Hill/Mountain height (hilliness)
float hill1 = getLerp(height1, height2, mnt_var);
float hill2 = getLerp(height3, height4, mnt_var);
float hill3 = getLerp(height3, height2, mnt_var);
float hill4 = getLerp(height1, height4, mnt_var);
float hilliness = std::fmax(std::fmin(hill1, hill2), std::fmin(hill3, hill4));
// Rolling hills
float hill_mnt = hilliness * pow(n_hills, 2.f);
float hills = pow(hter, 3.f) * hill_mnt;
// Ridged mountains
float ridge_mnt = hilliness * (1.f - fabs(n_ridge_mnt));
float ridged_mountains = pow(rter, 3.f) * ridge_mnt;
// Step (terraced) mountains
float step_mnt = hilliness * getSteps(n_step_mnt);
float step_mountains = pow(ster, 3.f) * step_mnt;
// Final terrain level
float mountains = hills + ridged_mountains + step_mountains;
float surface_level = ground + mountains + grad;
if (y > surface_level && height < 0)
height = y;
}
return height;
}
int MapgenCarpathian::generateTerrain()
{
MapNode mn_air(CONTENT_AIR);
MapNode mn_stone(c_stone);
MapNode mn_water(c_water_source);
s16 stone_surface_max_y = -MAX_MAP_GENERATION_LIMIT;
u32 index2d = 0;
u32 index3d = 0;
// Calculate noise for terrain generation
noise_base->perlinMap2D(node_min.X, node_min.Z);
noise_height1->perlinMap2D(node_min.X, node_min.Z);
noise_height2->perlinMap2D(node_min.X, node_min.Z);
noise_height3->perlinMap2D(node_min.X, node_min.Z);
noise_height4->perlinMap2D(node_min.X, node_min.Z);
noise_hills_terrain->perlinMap2D(node_min.X, node_min.Z);
noise_ridge_terrain->perlinMap2D(node_min.X, node_min.Z);
noise_step_terrain->perlinMap2D(node_min.X, node_min.Z);
noise_hills->perlinMap2D(node_min.X, node_min.Z);
noise_ridge_mnt->perlinMap2D(node_min.X, node_min.Z);
noise_step_mnt->perlinMap2D(node_min.X, node_min.Z);
noise_mnt_var->perlinMap3D(node_min.X, node_min.Y - 1, node_min.Z);
//// Place nodes
for (s16 z = node_min.Z; z <= node_max.Z; z++) {
for (s16 y = node_min.Y - 1; y <= node_max.Y + 1; y++) {
u32 vi = vm->m_area.index(node_min.X, y, z);
for (s16 x = node_min.X; x <= node_max.X;
x++, vi++, index2d++, index3d++) {
if (vm->m_data[vi].getContent() != CONTENT_IGNORE)
continue;
// Base terrain
float ground = noise_base->result[index2d];
// Gradient & shallow seabed
s32 grad = (y < water_level) ? grad_wl + (water_level - y) * 3 : 1 - y;
// Hill/Mountain height (hilliness)
float height1 = noise_height1->result[index2d];
float height2 = noise_height2->result[index2d];
float height3 = noise_height3->result[index2d];
float height4 = noise_height4->result[index2d];
float mnt_var = noise_mnt_var->result[index3d];
// Combine height noises and apply 3D variation
float hill1 = getLerp(height1, height2, mnt_var);
float hill2 = getLerp(height3, height4, mnt_var);
float hill3 = getLerp(height3, height2, mnt_var);
float hill4 = getLerp(height1, height4, mnt_var);
// 'hilliness' determines whether hills/mountains are
// small or large
float hilliness = std::fmax(std::fmin(hill1, hill2), std::fmin(hill3, hill4));
// Rolling hills
float hter = noise_hills_terrain->result[index2d];
float n_hills = noise_hills->result[index2d];
float hill_mnt = hilliness * pow(n_hills, 2.f);
float hills = pow(fabs(hter), 3.f) * hill_mnt;
// Ridged mountains
float rter = noise_ridge_terrain->result[index2d];
float n_ridge_mnt = noise_ridge_mnt->result[index2d];
float ridge_mnt = hilliness * (1.f - fabs(n_ridge_mnt));
float ridged_mountains = pow(fabs(rter), 3.f) * ridge_mnt;
// Step (terraced) mountains
float ster = noise_step_terrain->result[index2d];
float n_step_mnt = noise_step_mnt->result[index2d];
float step_mnt = hilliness * getSteps(n_step_mnt);
float step_mountains = pow(fabs(ster), 3.f) * step_mnt;
// Final terrain level
float mountains = hills + ridged_mountains + step_mountains;
float surface_level = ground + mountains + grad;
if (y < surface_level) {
vm->m_data[vi] = mn_stone; // Stone
if (y > stone_surface_max_y)
stone_surface_max_y = y;
} else if (y <= water_level) {
vm->m_data[vi] = mn_water; // Sea water
} else {
vm->m_data[vi] = mn_air; // Air
}
}
index2d -= ystride;
}
index2d += ystride;
}
return stone_surface_max_y;
}
