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maszyna/application/editormode.cpp

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/*
This Source Code Form is subject to the
terms of the Mozilla Public License, v.
2.0. If a copy of the MPL was not
distributed with this file, You can
obtain one at
http://mozilla.org/MPL/2.0/.
*/
#include "stdafx.h"
#include "application/editormode.h"
#include "application/editoruilayer.h"
#include "application/application.h"
#include "editor/editorSettings.hpp"
#include "utilities/Globals.h"
#include "simulation/simulation.h"
#include "simulation/simulationtime.h"
#include "simulation/simulationenvironment.h"
#include "utilities/Timer.h"
#include "Console.h"
#include "rendering/renderer.h"
#include "model/AnimModel.h"
#include "model/Model3d.h"
#include "utilities/Float3d.h"
#include "scene/scene.h"
#include "utilities/parser.h"
#include "utilities/utilities.h"
#include "imgui/imgui.h"
#include "imgui/ImGuizmo.h"
#include "utilities/Logs.h"
#include <glm/gtc/type_ptr.hpp>
#include <glm/gtc/matrix_transform.hpp>
#include <array>
#include <cmath>
#include <functional>
#include <limits>
#include <vector>
// Static member initialization
TCamera editor_mode::Camera;
bool editor_mode::m_focus_active = false;
bool editor_mode::m_change_history = false;
bool editor_mode::m_settings_open = false;
namespace
{
using vec3 = glm::vec3;
using dvec2 = glm::dvec2;
inline bool is_release(int state)
{
return state == GLFW_RELEASE;
}
inline bool is_press(int state)
{
return state == GLFW_PRESS;
}
// true when the most recent left button press landed in the viewport rather than on an ImGui window.
// valid once ImGui has processed the press (i.e. from mode update onwards), so it's also used to
// discard deferred pick callbacks of a press that leaked past the application's UI filter
inline bool viewport_click()
{
return false == ImGui::GetIO().MouseDownOwned[0];
}
// tests whether the vertical line through (Px,Pz) passes over triangle abc; if so returns the
// surface height at that point through OutY. used by the "snap to ground" (END) feature.
inline bool triangle_height_at(glm::dvec3 const &a, glm::dvec3 const &b, glm::dvec3 const &c,
double const Px, double const Pz, double &OutY)
{
double const ux = b.x - a.x, uz = b.z - a.z;
double const vx = c.x - a.x, vz = c.z - a.z;
double const wx = Px - a.x, wz = Pz - a.z;
double const den = ux * vz - vx * uz;
if (std::abs(den) < 1e-9)
return false; // degenerate or vertical triangle, no defined height
double const s = (wx * vz - vx * wz) / den;
double const t = (ux * wz - wx * uz) / den;
if (s < 0.0 || t < 0.0 || s + t > 1.0)
return false;
OutY = a.y + s * (b.y - a.y) + t * (c.y - a.y);
return true;
}
using world_triangle = std::array<glm::dvec3, 3>;
// walks a model's submodel tree (mirroring the renderer's transform chain) and appends every
// mesh triangle, in world space, to Out. siblings are iterated to avoid deep recursion.
void gather_submodel_triangles(TSubModel *Submodel, glm::dmat4 const &M, std::vector<world_triangle> &Out)
{
for (TSubModel *sub = Submodel; sub != nullptr; sub = sub->Next)
{
glm::dmat4 mlocal = M;
if (sub->iFlags & 0xC000 && sub->GetMatrix() != nullptr)
mlocal = M * glm::dmat4(glm::make_mat4(sub->GetMatrix()->readArray()));
if (sub->eType < TP_ROTATOR) // a drawable mesh, not a rotator/light/etc.
{
auto const handle = sub->m_geometry.handle;
if (handle.bank != 0 || handle.chunk != 0)
{
auto const &verts = GfxRenderer->Vertices(handle);
auto const &indices = GfxRenderer->Indices(handle);
auto const to_world = [&](gfx::basic_vertex const &v) {
return glm::dvec3(mlocal * glm::dvec4(glm::dvec3(v.position), 1.0));
};
if (false == indices.empty())
{
for (std::size_t i = 0; i + 2 < indices.size(); i += 3)
Out.push_back({to_world(verts[indices[i]]), to_world(verts[indices[i + 1]]), to_world(verts[indices[i + 2]])});
}
else
{
for (std::size_t i = 0; i + 2 < verts.size(); i += 3)
Out.push_back({to_world(verts[i]), to_world(verts[i + 1]), to_world(verts[i + 2])});
}
}
}
if (sub->Child != nullptr)
gather_submodel_triangles(sub->Child, mlocal, Out); // children inherit this matrix
}
}
// world transform of a model instance, matching the renderer: translate * rotateY * rotateX * rotateZ * scale
glm::dmat4 instance_matrix(TAnimModel const &Model)
{
glm::dmat4 rootm(1.0);
rootm = glm::translate(rootm, Model.location());
glm::vec3 const angles = Model.Angles();
if (angles.y != 0.0f) rootm = glm::rotate(rootm, glm::radians(static_cast<double>(angles.y)), glm::dvec3(0.0, 1.0, 0.0));
if (angles.x != 0.0f) rootm = glm::rotate(rootm, glm::radians(static_cast<double>(angles.x)), glm::dvec3(1.0, 0.0, 0.0));
if (angles.z != 0.0f) rootm = glm::rotate(rootm, glm::radians(static_cast<double>(angles.z)), glm::dvec3(0.0, 0.0, 1.0));
return glm::scale(rootm, glm::dvec3(Model.Scale()));
}
// even-odd test of a point against a polygon outline projected onto the XZ plane
bool point_in_polygon_xz(std::vector<glm::dvec3> const &Polygon, double const X, double const Z)
{
bool inside = false;
for (std::size_t i = 0, j = Polygon.size() - 1; i < Polygon.size(); j = i++)
{
auto const &a = Polygon[i];
auto const &b = Polygon[j];
if ((a.z > Z) != (b.z > Z) && X < (b.x - a.x) * (Z - a.z) / (b.z - a.z) + a.x)
inside = !inside;
}
return inside;
}
// area of a polygon outline projected onto the XZ plane (shoelace formula)
double polygon_area_xz(std::vector<glm::dvec3> const &Polygon)
{
if (Polygon.size() < 3)
return 0.0;
double sum = 0.0;
for (std::size_t i = 0, j = Polygon.size() - 1; i < Polygon.size(); j = i++)
sum += Polygon[j].x * Polygon[i].z - Polygon[i].x * Polygon[j].z;
return std::abs(sum) * 0.5;
}
// short readable name of a node template (model file and texture), like the node bank shows it
std::string template_label(std::string const &Template)
{
cParser tokenizer(Template);
tokenizer.getTokens(9, false); // node, ranges, name, type, position, rotation
auto model{tokenizer.getToken<std::string>(false)};
auto texture{tokenizer.getToken<std::string>(false)};
replace_slashes(model);
erase_extension(model);
replace_slashes(texture);
return texture == "none" || texture.empty() ? model : model + " (" + texture + ")";
}
// world triangles bucketed on a uniform XZ grid, for many ground height queries over one area
class triangle_grid
{
public:
triangle_grid(std::vector<world_triangle> Triangles, glm::dvec2 const &Min, glm::dvec2 const &Max) : m_triangles(std::move(Triangles)), m_min(Min)
{
glm::dvec2 const extent = glm::max(Max - Min, glm::dvec2(1.0));
// ~8 m cells, coarser for big areas so large terrain triangles don't flood the grid
m_cellsize = std::max(8.0, std::max(extent.x, extent.y) / 128.0);
m_columns = static_cast<int>(std::ceil(extent.x / m_cellsize)) + 1;
m_rows = static_cast<int>(std::ceil(extent.y / m_cellsize)) + 1;
m_cells.resize(static_cast<std::size_t>(m_columns) * m_rows);
for (std::uint32_t idx = 0; idx < m_triangles.size(); ++idx)
{
auto const &t = m_triangles[idx];
int const c0 = column(std::min({t[0].x, t[1].x, t[2].x}));
int const c1 = column(std::max({t[0].x, t[1].x, t[2].x}));
int const r0 = row(std::min({t[0].z, t[1].z, t[2].z}));
int const r1 = row(std::max({t[0].z, t[1].z, t[2].z}));
for (int r = r0; r <= r1; ++r)
for (int c = c0; c <= c1; ++c)
m_cells[static_cast<std::size_t>(r) * m_columns + c].push_back(idx);
}
}
// highest surface at (X,Z) that isn't above Ceiling. returns: true if there is one
bool height_at(double const X, double const Z, double const Ceiling, double &OutY) const
{
bool found = false;
for (auto const idx : m_cells[static_cast<std::size_t>(row(Z)) * m_columns + column(X)])
{
auto const &t = m_triangles[idx];
double y;
if (triangle_height_at(t[0], t[1], t[2], X, Z, y) && y <= Ceiling && (!found || y > OutY))
{
OutY = y;
found = true;
}
}
return found;
}
private:
int column(double const X) const
{
return std::clamp(static_cast<int>(std::floor((X - m_min.x) / m_cellsize)), 0, m_columns - 1);
}
int row(double const Z) const
{
return std::clamp(static_cast<int>(std::floor((Z - m_min.y) / m_cellsize)), 0, m_rows - 1);
}
std::vector<world_triangle> m_triangles;
std::vector<std::vector<std::uint32_t>> m_cells;
glm::dvec2 m_min;
double m_cellsize{8.0};
int m_columns{1};
int m_rows{1};
};
// appends triangles of a shape node which overlap specified XZ rectangle
void gather_shape_triangles(scene::shape_node const &Shape, glm::dvec2 const &Min, glm::dvec2 const &Max, std::vector<world_triangle> &Out)
{
auto const &data = Shape.data();
if (data.area.radius >= 0.0f)
{
double const r = data.area.radius;
if (data.area.center.x + r < Min.x || data.area.center.x - r > Max.x || data.area.center.z + r < Min.y || data.area.center.z - r > Max.y)
return;
}
auto const add = [&](glm::dvec3 const &a, glm::dvec3 const &b, glm::dvec3 const &c) {
if (std::max({a.x, b.x, c.x}) < Min.x || std::min({a.x, b.x, c.x}) > Max.x || std::max({a.z, b.z, c.z}) < Min.y || std::min({a.z, b.z, c.z}) > Max.y)
return;
Out.push_back({a, b, c});
};
if (false == data.vertices.empty())
{
for (std::size_t i = 0; i + 2 < data.vertices.size(); i += 3)
add(data.vertices[i].position, data.vertices[i + 1].position, data.vertices[i + 2].position);
return;
}
// once the shape is uploaded its world-space source is released; the renderer keeps an origin-relative copy
if (data.geometry.bank == 0 && data.geometry.chunk == 0)
return;
auto const &verts = GfxRenderer->Vertices(data.geometry);
auto const &indices = GfxRenderer->Indices(data.geometry);
auto const to_world = [&](gfx::basic_vertex const &v) { return data.origin + glm::dvec3(v.position); };
if (false == indices.empty())
{
for (std::size_t i = 0; i + 2 < indices.size(); i += 3)
add(to_world(verts[indices[i]]), to_world(verts[indices[i + 1]]), to_world(verts[indices[i + 2]]));
}
else
{
for (std::size_t i = 0; i + 2 < verts.size(); i += 3)
add(to_world(verts[i]), to_world(verts[i + 1]), to_world(verts[i + 2]));
}
}
}
bool editor_mode::editormode_input::init()
{
return mouse.init() && keyboard.init();
}
void editor_mode::editormode_input::poll()
{
keyboard.poll();
}
editor_mode::editor_mode() {
m_userinterface = std::make_shared<editor_ui>();
}
editor_ui *editor_mode::ui() const
{
return static_cast<editor_ui *>(m_userinterface.get());
}
bool editor_mode::init()
{
EditorSettings.load();
Camera.Init({0, 15, 0}, {glm::radians(-30.0), glm::radians(180.0), 0}, nullptr);
return m_input.init();
}
void editor_mode::apply_rotation_for_new_node(scene::basic_node *node, int rotation_mode, float fixed_rotation_value)
{
if (!node)
return;
if (rotation_mode == functions_panel::RANDOM)
{
const vec3 rotation{0.0f, LocalRandom(0.0, 360.0), 0.0f};
m_editor.rotate(node, rotation, 1);
}
else if (rotation_mode == functions_panel::FIXED)
{
const vec3 rotation{0.0f, fixed_rotation_value, 0.0f};
m_editor.rotate(node, rotation, 0);
}
}
void editor_mode::start_focus(scene::basic_node *node, double duration)
{
if (!node)
return;
glm::dvec3 const center = node->location();
// distance that frames the object's bounding sphere within the vertical FOV, with some margin
double const radius = std::max(1.0, static_cast<double>(node->radius()));
double const fovy = glm::radians(static_cast<double>(Global.FieldOfView) / std::max(0.01, static_cast<double>(Global.ZoomFactor)));
double distance = radius / std::tan(fovy * 0.5) * 1.6;
distance = std::clamp(distance, radius * 1.5, static_cast<double>(kMaxPlacementDistance));
// keep the camera on the side it currently views from, so the move turns toward the object
// rather than flying around it; fall back to a pleasant 3/4 direction when sitting on top of it
glm::dvec3 dir = Camera.Pos - center;
double const len = glm::length(dir);
dir = len > 1e-3 ? dir / len : glm::normalize(glm::dvec3(1.0, 0.5, 1.0));
m_focus_start_pos = Camera.Pos;
m_focus_start_angle = Camera.Angle;
m_focus_target_pos = center + dir * distance;
// target orientation looks from the target position straight at the object
glm::dvec3 look = center - m_focus_target_pos;
double const looklen = glm::length(look);
if (looklen > 1e-6)
look /= looklen;
m_focus_target_angle = glm::vec3(
static_cast<float>(std::asin(glm::clamp(look.y, -1.0, 1.0))), // pitch
static_cast<float>(std::atan2(-look.x, -look.z)), // yaw
0.0f); // roll
m_focus_active = true;
m_focus_time = 0.0;
m_focus_duration = duration;
}
void editor_mode::snap_to_ground(scene::basic_node *node)
{
if (!node || !simulation::Region)
return;
glm::dvec3 const origin = node->location();
if (!simulation::Region->point_inside(origin))
return;
// small tolerance so a node already resting on a surface still snaps cleanly to it
double const epsilon = 0.05;
double bestY = -std::numeric_limits<double>::max();
bool found = false;
// record the highest surface that is at or below the node's current position at its (x,z)
auto consider_triangle = [&](glm::dvec3 const &a, glm::dvec3 const &b, glm::dvec3 const &c) {
double y;
if (triangle_height_at(a, b, c, origin.x, origin.z, y) && y <= origin.y + epsilon && y > bestY)
{
bestY = y;
found = true;
}
};
auto consider_shapes = [&](std::vector<scene::shape_node> const &shapes) {
for (auto const &shape : shapes)
{
// quick reject: skip shapes whose bounding circle doesn't cover our (x,z) column
auto const &sdata = shape.data();
double const sdx = origin.x - sdata.area.center.x;
double const sdz = origin.z - sdata.area.center.z;
if (sdx * sdx + sdz * sdz > static_cast<double>(sdata.area.radius) * sdata.area.radius)
continue;
auto const &verts = sdata.vertices;
for (std::size_t i = 0; i + 2 < verts.size(); i += 3)
consider_triangle(verts[i].position, verts[i + 1].position, verts[i + 2].position);
}
};
scene::basic_section &sec = simulation::Region->section(origin);
// section level holds the large opaque geometry, including legacy terrain
consider_shapes(sec.m_shapes);
// scan a 3x3 neighbourhood of cells for smaller geometry and other model instances below us
for (int dz = -1; dz <= 1; ++dz)
for (int dx = -1; dx <= 1; ++dx)
{
scene::basic_cell &cell = sec.cell(origin, glm::ivec2(dx, dz));
consider_shapes(cell.m_shapesopaque);
consider_shapes(cell.m_shapestranslucent);
// other instances are approximated by their bounding sphere, so a node can rest on top of them
for (auto *inst : cell.m_instancesopaque)
{
if (!inst || inst == node)
continue;
glm::dvec3 const ic = inst->location();
double const r = static_cast<double>(inst->radius());
double const idx = origin.x - ic.x, idz = origin.z - ic.z;
double const horiz2 = idx * idx + idz * idz;
if (horiz2 < r * r)
{
double const ytop = ic.y + std::sqrt(r * r - horiz2);
if (ytop <= origin.y + epsilon && ytop > bestY)
{
bestY = ytop;
found = true;
}
}
}
}
// editable terrain patches keep their heightmap on the CPU, so query them directly
for (editor_terrain *terrain : active_terrains())
{
if (!terrain->contains(origin.x, origin.z))
continue;
double const y = terrain->height_at(origin.x, origin.z);
if (y <= origin.y + epsilon && y > bestY)
{
bestY = y;
found = true;
}
}
if (!found)
return;
push_snapshot(node, EditorSnapshot::Action::Move);
glm::dvec3 target = origin;
target.y = bestY;
m_editor.translate(node, target, true); // true == apply the computed Y (free vertical move)
}
void editor_mode::handle_brush_mouse_hold(int Action, int Button)
{
auto const mode = ui()->mode();
auto const rotation_mode = ui()->rot_mode();
auto const fixed_rotation_value = ui()->rot_val();
if(mode != nodebank_panel::BRUSH)
return;
GfxRenderer->Pick_Node_Callback(
[this, mode, rotation_mode, fixed_rotation_value, Action, Button](scene::basic_node * /*node*/) {
// picks are resolved a few frames later; drop the ones queued before the button went up,
// or for a press that turned out to belong to the UI
if (!mouseHold || !viewport_click())
return;
const std::string *src = ui()->get_active_node_template();
if (!src)
return;
std::string name = "editor_";
// spacing is measured in world space: the mouse offset is camera-relative and the camera may move mid-stroke
glm::dvec3 const newPos = Camera.Pos + clamp_mouse_offset_to_max(GfxRenderer->Mouse_Position());
if (m_brush_has_last && glm::distance(newPos, oldPos) < ui()->getSpacing())
return;
TAnimModel *cloned = simulation::State.create_model(*src, name, newPos);
oldPos = newPos;
m_brush_has_last = true;
if (!cloned)
return;
std::string new_name = "editor_" + cloned->uuid.to_string();
cloned->m_name = new_name;
apply_rotation_for_new_node(cloned, rotation_mode, fixed_rotation_value);
std::string as_text;
cloned->export_as_text(as_text);
push_snapshot(cloned, EditorSnapshot::Action::Add, as_text);
m_node = cloned;
ui()->set_node(m_node);
});
}
void editor_mode::add_to_hierarchy(scene::basic_node *node)
{
if (!node) return;
scene::Hierarchy[node->uuid.to_string()] = node;
}
void editor_mode::remove_from_hierarchy(scene::basic_node *node)
{
if (!node) return;
auto it = scene::Hierarchy.find(node->uuid.to_string());
if (it != scene::Hierarchy.end())
scene::Hierarchy.erase(it);
}
scene::basic_node* editor_mode::find_in_hierarchy(const std::string &uuid_str)
{
if (uuid_str.empty()) return nullptr;
auto it = scene::Hierarchy.find(uuid_str);
return it != scene::Hierarchy.end() ? it->second : nullptr;
}
scene::basic_node* editor_mode::find_node_by_any(scene::basic_node *node_ptr, const std::string &uuid_str, const std::string &name)
{
if (node_ptr) return node_ptr;
if (!uuid_str.empty()) {
auto *node = find_in_hierarchy(uuid_str);
if (node) return node;
}
if (!name.empty()) {
return simulation::Instances.find(name);
}
return nullptr;
}
void editor_mode::push_snapshot(scene::basic_node *node, EditorSnapshot::Action Action, std::string const &Serialized)
{
if (!node)
return;
if(m_max_history_size >= 0 && (int)m_history.size() >= m_max_history_size)
{
m_history.erase(m_history.begin(), m_history.begin() + ((int)m_history.size() - m_max_history_size + 1));
}
EditorSnapshot snap;
snap.action = Action;
snap.node_name = node->name();
snap.position = node->location();
snap.uuid = node->uuid;
if (auto *model = dynamic_cast<TAnimModel *>(node))
{
snap.rotation = model->Angles();
snap.scale = model->Scale();
}
else
{
snap.rotation = glm::vec3(0.0f);
snap.scale = glm::vec3(1.0f);
}
if (Action == EditorSnapshot::Action::Delete || Action == EditorSnapshot::Action::Add)
{
if (!Serialized.empty())
snap.serialized = Serialized;
else
node->export_as_text(snap.serialized);
}
snap.node_ptr = node;
m_history.push_back(std::move(snap));
g_redo.clear();
}
glm::dvec3 editor_mode::clamp_mouse_offset_to_max(const glm::dvec3 &offset)
{
double len = glm::length(offset);
if (len <= static_cast<double>(kMaxPlacementDistance) || len <= 1e-6)
return offset;
return glm::normalize(offset) * static_cast<double>(kMaxPlacementDistance);
}
void editor_mode::nullify_history_pointers(scene::basic_node *node)
{
if (!node)
return;
for (auto &s : m_history)
{
if (s.node_ptr == node)
s.node_ptr = nullptr;
}
for (auto &s : g_redo)
{
if (s.node_ptr == node)
s.node_ptr = nullptr;
}
// deleted nodes also drop out of the "undo last fill" set
m_fill_last.erase(std::remove(m_fill_last.begin(), m_fill_last.end(), node), m_fill_last.end());
}
void editor_mode::undo_last()
{
if (m_history.empty())
return;
EditorSnapshot snap = m_history.back();
m_history.pop_back();
if (snap.action == EditorSnapshot::Action::Delete)
{
// undo delete -> recreate model
EditorSnapshot redoSnap;
redoSnap.action = EditorSnapshot::Action::Delete;
redoSnap.node_name = snap.node_name;
redoSnap.serialized = snap.serialized;
redoSnap.position = snap.position;
redoSnap.node_ptr = nullptr;
g_redo.push_back(std::move(redoSnap));
TAnimModel *created = simulation::State.create_model(snap.serialized, snap.node_name, snap.position);
if (created)
{
created->location(snap.position);
created->Angles(snap.rotation);
m_node = created;
m_node->uuid = snap.uuid; // restore original UUID for better tracking (not strictly necessary)
add_to_hierarchy(created);
ui()->set_node(m_node);
}
return;
}
scene::basic_node *target = find_node_by_any(snap.node_ptr, snap.uuid.to_string(), snap.node_name);
if (!target)
return;
EditorSnapshot current;
current.action = snap.action;
current.node_name = snap.node_name;
current.node_ptr = target;
current.position = target->location();
if (auto *model = dynamic_cast<TAnimModel *>(target))
{
current.rotation = model->Angles();
current.scale = model->Scale();
}
else
current.rotation = glm::vec3(0.0f);
g_redo.push_back(std::move(current));
if (snap.action == EditorSnapshot::Action::Add)
{
// undo add -> delete the instance
if (auto *model = dynamic_cast<TAnimModel *>(target))
{
nullify_history_pointers(model);
remove_from_hierarchy(model);
simulation::State.delete_model(model);
m_node = nullptr;
ui()->set_node(nullptr);
}
return;
}
target->location(snap.position);
if (auto *model = dynamic_cast<TAnimModel *>(target))
{
glm::vec3 cur = model->Angles();
glm::vec3 delta = snap.rotation - cur;
m_editor.rotate(target, delta, 0);
model->Scale(snap.scale);
}
m_node = target;
ui()->set_node(m_node);
}
void editor_mode::redo_last()
{
if (g_redo.empty())
return;
EditorSnapshot snap = g_redo.back();
g_redo.pop_back();
// handle delete redo (re-delete) separately
if (snap.action == EditorSnapshot::Action::Delete)
{
EditorSnapshot hist;
hist.action = snap.action;
hist.node_name = snap.node_name;
hist.serialized = snap.serialized;
hist.position = snap.position;
hist.uuid = snap.uuid;
m_history.push_back(std::move(hist));
scene::basic_node *target = simulation::Instances.find(snap.node_name);
if (target)
{
if (auto *model = dynamic_cast<TAnimModel *>(target))
{
nullify_history_pointers(model);
remove_from_hierarchy(model);
simulation::State.delete_model(model);
m_node = nullptr;
ui()->set_node(nullptr);
}
}
return;
}
scene::basic_node *target = find_node_by_any(snap.node_ptr, snap.uuid.to_string(), snap.node_name);
EditorSnapshot hist;
hist.action = snap.action;
hist.node_name = snap.node_name;
hist.node_ptr = target;
if (target)
{
hist.position = target->location();
if (auto *model = dynamic_cast<TAnimModel *>(target))
{
hist.rotation = model->Angles();
hist.scale = model->Scale();
}
hist.uuid = snap.uuid;
}
m_history.push_back(std::move(hist));
if (snap.action == EditorSnapshot::Action::Add)
{
TAnimModel *created = simulation::State.create_model(snap.serialized, snap.node_name, snap.position);
if (created)
{
created->location(snap.position);
created->Angles(snap.rotation);
created->Scale(snap.scale);
m_node = created;
m_node->uuid = snap.uuid;
ui()->set_node(m_node);
if (!m_history.empty())
m_history.back().node_ptr = created;
}
return;
}
if (!target)
return;
// apply redo position
target->location(snap.position);
if (auto *model = dynamic_cast<TAnimModel *>(target))
{
glm::vec3 cur = model->Angles();
glm::vec3 delta = snap.rotation - cur;
m_editor.rotate(target, delta, 0);
model->Scale(snap.scale);
}
m_node = target;
ui()->set_node(m_node);
}
bool editor_mode::update()
{
Timer::UpdateTimers(true);
simulation::State.update_clocks();
simulation::Environment.update();
auto const deltarealtime = Timer::GetDeltaRenderTime();
// reconcile camera fly-mode with the real right-button state. ImGui is always fed the button
// events (even when it captures the mouse), so io.MouseDown[1] is authoritative; if a release
// was swallowed by an ImGui window while flying, force the editor out of fly-mode here so the
// camera doesn't get stuck spinning with a hidden cursor.
if (!ImGui::GetIO().MouseDown[1] && m_input.mouse.button(GLFW_MOUSE_BUTTON_RIGHT) == GLFW_PRESS)
{
m_input.mouse.button(GLFW_MOUSE_BUTTON_RIGHT, GLFW_RELEASE);
Application.set_cursor(GLFW_CURSOR_NORMAL);
}
// same for the left button (brush / sculpt / click placement). the UI filter in the application
// uses io.WantCaptureMouse from the previous frame, so a press on a panel the cursor has just
// moved onto can leak into the viewport, and its release is then swallowed by the UI; the brush
// would keep painting with the button up. by now ImGui has processed this frame's input, so
// MouseDown is the real button state and MouseDownOwned tells whether the press hit the UI.
// (pick callbacks queued by such a press are discarded separately, see viewport_click())
if (mouseHold && (!ImGui::GetIO().MouseDown[0] || !viewport_click()))
{
mouseHold = false;
m_dragging = false;
m_input.mouse.button(GLFW_MOUSE_BUTTON_LEFT, GLFW_RELEASE);
}
// fixed step render time routines (50 Hz)
fTime50Hz += deltarealtime; // accumulate even when paused to keep frame reads stable
while (fTime50Hz >= 1.0 / 50.0)
{
#ifdef _WIN32
Console::Update();
#endif
m_userinterface->update();
// update brush settings visibility depending on panel mode
ui()->toggleBrushSettings(ui()->mode() == nodebank_panel::BRUSH);
if (mouseHold)
{
// process continuous brush placement
if(ui()->mode() == nodebank_panel::BRUSH)
handle_brush_mouse_hold(GLFW_REPEAT, GLFW_MOUSE_BUTTON_LEFT);
}
// decelerate camera velocity with thresholding
Camera.Velocity *= 0.65f;
if (std::abs(Camera.Velocity.x) < 0.01)
Camera.Velocity.x = 0.0;
if (std::abs(Camera.Velocity.y) < 0.01)
Camera.Velocity.y = 0.0;
if (std::abs(Camera.Velocity.z) < 0.01)
Camera.Velocity.z = 0.0;
fTime50Hz -= 1.0 / 50.0;
}
// variable step routines
update_camera(deltarealtime);
simulation::Region->update_sounds();
audio::renderer.update(Global.iPause ? 0.0 : deltarealtime);
GfxRenderer->Update(deltarealtime);
simulation::is_ready = true;
// note: the streamer is advanced centrally in the application main loop (so it runs in every
// mode), using the published Global.pCamera; nothing to do here
// continuous terrain sculpting while the left mouse button is held in sculpt mode
if (m_terrain_sculpt && mouseHold)
handle_terrain_sculpt(deltarealtime);
// debounced auto mesh simplification: once sculpting has settled for a short while, simplify
// any chunk that was edited. holding the brush keeps the timer reset so we don't churn mid-stroke.
if (m_terrain_auto_optimize)
{
auto const terrains = active_terrains();
bool any_dirty = false;
for (editor_terrain *terrain : terrains)
if (terrain->dirty())
{
any_dirty = true;
break;
}
if (!any_dirty || (m_terrain_sculpt && mouseHold))
{
m_terrain_idle = 0.0; // actively editing (or nothing pending): hold off
}
else
{
m_terrain_idle += deltarealtime;
if (m_terrain_idle >= 0.5) // settle time
{
for (editor_terrain *terrain : terrains)
if (terrain->dirty())
terrain->optimize(m_terrain_simplify_error);
m_terrain_idle = 0.0;
}
}
}
// --- ImGuizmo: in-viewport transform gizmo for the selected node ---
render_gizmo();
// --- area fill: outline overlay and settings, while the mode is active ---
if (ui()->mode() == nodebank_panel::FILL)
{
draw_area_fill_outline();
render_area_fill();
}
// --- ImGui: Editor Settings & History windows ---
if(m_settings_open)
render_settings();
if(!m_change_history) return true;
render_change_history();
return true;
}
void editor_mode::render_settings()
{
ImGui::Begin("Editor Settings", &m_settings_open, ImGuiWindowFlags_AlwaysAutoResize);
ImGui::TextUnformatted("Camera movement");
const char *schemes[] = {"WSAD (new)", "Arrows (legacy)"};
int current = EditorSettings.movement() == editorSettings::movement_scheme::legacy ? 1 : 0;
if (ImGui::Combo("##movement_scheme", &current, schemes, IM_ARRAYSIZE(schemes)))
{
EditorSettings.movement(current == 1 ? editorSettings::movement_scheme::legacy
: editorSettings::movement_scheme::wsad);
m_input.keyboard.apply_scheme();
EditorSettings.save();
}
ImGui::Separator();
ImGui::Checkbox("Transform gizmo (ImGuizmo)", &m_gizmo_enabled);
render_terrain_ui();
ImGui::End();
}
void editor_mode::render_terrain_ui()
{
ImGui::Separator();
ImGui::TextUnformatted("Terrain");
ImGui::SetNextItemWidth(120.0f);
ImGui::InputInt("Grid cells", &m_terrain_cells);
m_terrain_cells = std::clamp(m_terrain_cells, 1, 512);
ImGui::SetNextItemWidth(120.0f);
ImGui::InputFloat("Cell size (m)", &m_terrain_cellsize);
if (m_terrain_cellsize < 0.1f)
m_terrain_cellsize = 0.1f;
ImGui::SetNextItemWidth(120.0f);
ImGui::InputFloat("Base height (m)", &m_terrain_baseheight);
ImGui::SetNextItemWidth(200.0f);
ImGui::InputText("Texture (optional)", m_terrain_texture, IM_ARRAYSIZE(m_terrain_texture));
if (ImGui::Button("Create flat terrain"))
{
// centre the new patch horizontally on the camera, flat at the requested base height
glm::dvec3 const center(Camera.Pos.x, static_cast<double>(m_terrain_baseheight), Camera.Pos.z);
auto terrain = std::make_unique<editor_terrain>();
if (terrain->create(center, m_terrain_cells, m_terrain_cellsize, std::string(m_terrain_texture)))
{
if (m_terrain_auto_optimize)
terrain->optimize(m_terrain_simplify_error);
m_terrains.push_back(std::move(terrain));
}
else
WriteLog("Editor: failed to create terrain", logtype::generic);
}
ImGui::SetNextItemWidth(120.0f);
ImGui::InputInt("Chunks / side", &m_terrain_chunks);
m_terrain_chunks = std::clamp(m_terrain_chunks, 1, 32);
ImGui::SameLine();
if (ImGui::Button("Create chunked terrain"))
create_chunked_terrain();
ImGui::TextDisabled("total %d x %d m, %d chunks",
static_cast<int>(m_terrain_chunks * m_terrain_cells * m_terrain_cellsize),
static_cast<int>(m_terrain_chunks * m_terrain_cells * m_terrain_cellsize),
m_terrain_chunks * m_terrain_chunks);
if (ImGui::Checkbox("Chunk edit mode (LMB add neighbour / Shift = delete)", &m_chunk_edit))
if (m_chunk_edit)
m_terrain_sculpt = false; // mutually exclusive with sculpting
ImGui::Text("Grid chunks: %zu", m_grid_chunks.size());
ImGui::Separator();
ImGui::TextUnformatted("Streaming (open world, follows camera)");
ImGui::SetNextItemWidth(120.0f);
ImGui::InputInt("Stream radius", &m_stream_radius);
m_stream_radius = std::clamp(m_stream_radius, 0, 16);
ImGui::Checkbox("Persist edits to disk (16-bit)", &m_stream_persist);
bool streaming = m_streamer.active();
if (ImGui::Checkbox("Stream terrain", &streaming))
{
if (streaming)
{
// per-scenery chunk folder so chunks from different sceneries don't collide
std::string scenery = Global.SceneryFile;
auto const slash = scenery.find_last_of("/\\");
if (slash != std::string::npos)
scenery = scenery.substr(slash + 1);
auto const dot = scenery.find_last_of('.');
if (dot != std::string::npos)
scenery = scenery.substr(0, dot);
if (scenery.empty())
scenery = "default";
m_streamer.directory("editor_terrain/" + scenery);
m_streamer.configure(m_terrain_cells, m_terrain_cellsize, m_stream_radius,
m_terrain_baseheight, std::string(m_terrain_texture));
m_streamer.simplify(m_terrain_auto_optimize, m_terrain_simplify_error);
m_streamer.persist(m_stream_persist);
// hand the authored grid chunks over to streaming: persist them to disk, then drop the
// in-memory meshes so the streamer owns residency (it loads them back within the radius)
for (auto &entry : m_grid_chunks)
if (entry.second)
m_streamer.save_chunk(entry.first.first, entry.first.second, *entry.second);
for (auto &entry : m_grid_chunks)
if (entry.second)
entry.second->destroy();
m_grid_chunks.clear();
}
else
{
m_streamer.clear(); // saves modified chunks before dropping them
}
m_streamer.active(streaming);
}
if (m_streamer.active())
{
// radius / simplify / persist are safe to tweak live; chunk size/base are fixed at toggle
m_streamer.radius(m_stream_radius);
m_streamer.simplify(m_terrain_auto_optimize, m_terrain_simplify_error);
m_streamer.persist(m_stream_persist);
ImGui::Text("Resident chunks: %zu (dir: %s)", m_streamer.resident(), m_streamer.directory().c_str());
}
ImGui::Text("Patches: %zu", m_terrains.size());
// capture: sample the selected model's geometry into an editable patch and remove the original
if (dynamic_cast<TAnimModel *>(m_node) != nullptr)
{
if (ImGui::Button("Capture selected model as terrain"))
capture_terrain();
}
else
{
ImGui::TextDisabled("Capture: select a model instance first");
}
std::vector<editor_terrain *> const terrains = active_terrains();
if (!terrains.empty())
{
ImGui::Separator();
if (ImGui::Checkbox("Sculpt mode (LMB raise / Shift = lower)", &m_terrain_sculpt))
if (m_terrain_sculpt)
m_chunk_edit = false; // mutually exclusive with chunk editing
ImGui::SetNextItemWidth(120.0f);
ImGui::InputFloat("Brush radius", &m_terrain_brush_radius);
if (m_terrain_brush_radius < 0.5f)
m_terrain_brush_radius = 0.5f;
ImGui::SetNextItemWidth(120.0f);
ImGui::InputFloat("Brush strength", &m_terrain_brush_strength);
// one-shot nudge of the most recent manual patch at its centre, handy for a quick test
if (!m_terrains.empty())
{
auto &terrain = m_terrains.back();
glm::dvec3 const c = terrain->centre();
if (ImGui::Button("Raise centre"))
terrain->sculpt(c.x, c.z, m_terrain_brush_radius, m_terrain_brush_strength);
ImGui::SameLine();
if (ImGui::Button("Lower centre"))
terrain->sculpt(c.x, c.z, m_terrain_brush_radius, -m_terrain_brush_strength);
}
ImGui::Separator();
ImGui::TextUnformatted("Optimize (mesh simplification, all patches)");
ImGui::SetNextItemWidth(120.0f);
ImGui::InputFloat("Flatness tol (m)", &m_terrain_simplify_error);
if (m_terrain_simplify_error < 0.01f)
m_terrain_simplify_error = 0.01f;
ImGui::Checkbox("Auto-optimize after sculpt", &m_terrain_auto_optimize);
if (ImGui::Button("Optimize all"))
for (editor_terrain *t : terrains)
t->optimize(m_terrain_simplify_error);
ImGui::SameLine();
if (ImGui::Button("Full-res all"))
for (editor_terrain *t : terrains)
t->unoptimize();
std::size_t tris = 0, full = 0;
for (editor_terrain *t : terrains)
{
tris += t->triangles();
full += t->full_triangles();
}
ImGui::Text("Triangles: %zu / %zu", tris, full);
}
}
editor_terrain *editor_mode::terrain_at(double X, double Z)
{
for (auto &terrain : m_terrains)
if (terrain && terrain->contains(X, Z))
return terrain.get();
double const size = chunk_grid_size();
auto const it = m_grid_chunks.find({static_cast<int>(std::floor(X / size)), static_cast<int>(std::floor(Z / size))});
if (it != m_grid_chunks.end() && it->second && it->second->contains(X, Z))
return it->second.get();
return m_streamer.terrain_at(X, Z);
}
std::vector<editor_terrain *> editor_mode::active_terrains()
{
std::vector<editor_terrain *> out;
out.reserve(m_terrains.size() + m_grid_chunks.size() + m_streamer.resident());
for (auto &terrain : m_terrains)
if (terrain)
out.push_back(terrain.get());
for (auto &entry : m_grid_chunks)
if (entry.second)
out.push_back(entry.second.get());
m_streamer.collect(out);
return out;
}
void editor_mode::add_grid_chunk(int Cx, int Cz)
{
std::pair<int, int> const key{Cx, Cz};
if (m_grid_chunks.count(key))
return; // already occupied
double const size = chunk_grid_size();
int const cells = std::clamp(m_terrain_cells, 1, 256);
glm::dvec3 const center((Cx + 0.5) * size, static_cast<double>(m_terrain_baseheight), (Cz + 0.5) * size);
auto terrain = std::make_unique<editor_terrain>();
if (!terrain->create(center, cells, m_terrain_cellsize, std::string(m_terrain_texture)))
return;
if (m_terrain_auto_optimize)
terrain->optimize(m_terrain_simplify_error);
m_grid_chunks[key] = std::move(terrain);
}
void editor_mode::remove_grid_chunk(int Cx, int Cz)
{
auto const it = m_grid_chunks.find({Cx, Cz});
if (it == m_grid_chunks.end())
return;
if (it->second)
it->second->destroy();
m_grid_chunks.erase(it);
}
void editor_mode::handle_chunk_edit_click(bool DeleteMode)
{
// world point under the cursor; must land on existing geometry to give a valid depth
glm::dvec3 const world = Camera.Pos + GfxRenderer->Mouse_Position();
double const size = chunk_grid_size();
int const cx = static_cast<int>(std::floor(world.x / size));
int const cz = static_cast<int>(std::floor(world.z / size));
bool const streaming = m_streamer.active();
if (DeleteMode)
{
if (streaming)
m_streamer.remove_chunk(cx, cz);
else
remove_grid_chunk(cx, cz);
return;
}
// if the clicked cell holds a chunk, target the neighbour nearest the clicked edge (the empty
// side); otherwise fill the clicked cell
bool const occupied = streaming
? m_streamer.terrain_at(world.x, world.z) != nullptr
: m_grid_chunks.count({cx, cz}) > 0;
int tcx = cx, tcz = cz;
if (occupied)
{
double const lx = world.x - cx * size, lz = world.z - cz * size;
double const dw = lx, de = size - lx, dn = lz, ds = size - lz;
double const nearest = std::min({dw, de, dn, ds});
if (nearest == dw)
tcx = cx - 1;
else if (nearest == de)
tcx = cx + 1;
else if (nearest == dn)
tcz = cz - 1;
else
tcz = cz + 1;
}
if (streaming)
m_streamer.add_chunk(tcx, tcz);
else
add_grid_chunk(tcx, tcz);
}
void editor_mode::create_chunked_terrain()
{
int const chunks = std::clamp(m_terrain_chunks, 1, 32);
double const size = chunk_grid_size();
// snap the field to the global chunk grid (so it aligns with manual/streamed chunks), centred
// on the camera's chunk
int const ccx = static_cast<int>(std::floor(Camera.Pos.x / size));
int const ccz = static_cast<int>(std::floor(Camera.Pos.z / size));
int const half = chunks / 2;
int created = 0;
for (int dz = 0; dz < chunks; ++dz)
for (int dx = 0; dx < chunks; ++dx)
{
int const cx = ccx - half + dx, cz = ccz - half + dz;
if (!m_grid_chunks.count({cx, cz}))
{
add_grid_chunk(cx, cz);
++created;
}
}
WriteLog("Editor: created chunked terrain with " + std::to_string(created) + " chunks", logtype::generic);
}
void editor_mode::save_scene_with_terrain()
{
// commit authored terrain so the scenery streams it on load. if not already streaming, hand the
// manual grid chunks over to the streamer (same as toggling Stream terrain on)
if (!m_streamer.active())
{
std::string scenery = Global.SceneryFile;
auto const slash = scenery.find_last_of("/\\");
if (slash != std::string::npos)
scenery = scenery.substr(slash + 1);
auto const dot = scenery.find_last_of('.');
if (dot != std::string::npos)
scenery = scenery.substr(0, dot);
if (scenery.empty())
scenery = "default";
m_streamer.directory("editor_terrain/" + scenery);
m_streamer.configure(m_terrain_cells, m_terrain_cellsize, m_stream_radius, m_terrain_baseheight,
std::string(m_terrain_texture));
m_streamer.simplify(m_terrain_auto_optimize, m_terrain_simplify_error);
m_streamer.persist(true);
for (auto &entry : m_grid_chunks)
if (entry.second)
m_streamer.save_chunk(entry.first.first, entry.first.second, *entry.second);
for (auto &entry : m_grid_chunks)
if (entry.second)
entry.second->destroy();
m_grid_chunks.clear();
m_streamer.active(true);
}
m_streamer.flush(); // save resident edited chunks to disk
// export scenery; the exported .scm now carries an `editorterrain` directive (streamer is active)
simulation::State.export_as_text(Global.SceneryFile);
WriteLog("Editor: saved scene + terrain", logtype::generic);
}
void editor_mode::handle_terrain_sculpt(double Deltatime)
{
// world point under the cursor (Mouse_Position is camera-relative, like the brush placement uses)
glm::dvec3 const world = Camera.Pos + GfxRenderer->Mouse_Position();
// only sculpt when the cursor is actually over terrain (avoids editing on a stale depth read)
if (terrain_at(world.x, world.z) == nullptr)
return;
double const rate = m_terrain_brush_strength * Deltatime; // metres applied this frame
double const signedrate = Global.shiftState ? -rate : rate;
// apply to every chunk the brush touches; each patch clips to its own bounds, so a stroke
// crossing a chunk boundary edits both and shared-edge vertices stay in sync
for (editor_terrain *terrain : active_terrains())
terrain->sculpt(world.x, world.z, m_terrain_brush_radius, signedrate);
}
void editor_mode::capture_terrain()
{
TAnimModel *model = dynamic_cast<TAnimModel *>(m_node);
if (model == nullptr || model->pModel == nullptr)
{
WriteLog("Editor: select a model instance to capture as terrain", logtype::generic);
return;
}
std::vector<world_triangle> tris;
gather_submodel_triangles(model->pModel->Root, instance_matrix(*model), tris);
if (tris.empty())
{
WriteLog("Editor: selected model has no readable geometry to capture", logtype::generic);
return;
}
// horizontal bounds of the captured geometry
glm::dvec3 lo(std::numeric_limits<double>::max());
glm::dvec3 hi(-std::numeric_limits<double>::max());
for (auto const &t : tris)
for (auto const &p : t)
{
lo.x = std::min(lo.x, p.x); lo.y = std::min(lo.y, p.y); lo.z = std::min(lo.z, p.z);
hi.x = std::max(hi.x, p.x); hi.y = std::max(hi.y, p.y); hi.z = std::max(hi.z, p.z);
}
glm::dvec3 const center((lo.x + hi.x) * 0.5, lo.y, (lo.z + hi.z) * 0.5);
double const extent = std::max(hi.x - lo.x, hi.z - lo.z);
int const cells = std::max(1, m_terrain_cells);
float const cellsize = static_cast<float>(std::max(0.1, extent / cells));
// sampler: highest captured triangle at (x,z)
auto const sampler = [&tris](double X, double Z, double &OutY) -> bool {
double best = -std::numeric_limits<double>::max();
bool found = false;
for (auto const &t : tris)
{
double const minx = std::min({t[0].x, t[1].x, t[2].x});
double const maxx = std::max({t[0].x, t[1].x, t[2].x});
double const minz = std::min({t[0].z, t[1].z, t[2].z});
double const maxz = std::max({t[0].z, t[1].z, t[2].z});
if (X < minx || X > maxx || Z < minz || Z > maxz)
continue;
double y;
if (triangle_height_at(t[0], t[1], t[2], X, Z, y) && (!found || y > best))
{
best = y;
found = true;
}
}
if (found)
OutY = best;
return found;
};
auto terrain = std::make_unique<editor_terrain>();
if (!terrain->create(center, cells, cellsize, std::string(m_terrain_texture), sampler))
{
WriteLog("Editor: terrain capture failed", logtype::generic);
return;
}
m_terrains.push_back(std::move(terrain));
// remove the original instance (recorded as a deletion so it can be undone)
std::string as_text;
model->export_as_text(as_text);
push_snapshot(model, EditorSnapshot::Action::Delete, as_text);
nullify_history_pointers(model);
remove_from_hierarchy(model);
m_node = nullptr;
m_dragging = false;
ui()->set_node(nullptr);
simulation::State.delete_model(model);
}
void editor_mode::add_area_fill_point()
{
// like the other placement tools, the point comes from the depth buffer under the cursor
// (ground geometry only), relative to the camera
glm::dvec3 const offset = GfxRenderer->Mouse_Position();
if (glm::length(offset) < 1e-3)
return; // no ground under the cursor (yet)
m_fill_points.push_back(Camera.Pos + offset);
}
void editor_mode::undo_last_area_fill()
{
// nullify_history_pointers() removes deleted nodes from m_fill_last, so work on a copy
auto const created = std::move(m_fill_last);
m_fill_last.clear();
for (TAnimModel *model : created)
{
if (model == nullptr)
continue;
if (m_node == model)
{
m_node = nullptr;
ui()->set_node(nullptr);
}
nullify_history_pointers(model);
remove_from_hierarchy(model);
simulation::State.delete_model(model);
}
m_fill_status = "Removed " + std::to_string(created.size()) + " objects of the last fill";
}
void editor_mode::run_area_fill()
{
// limits keeping a single click from freezing the editor for too long
std::size_t constexpr max_objects = 20000;
// large model instances (e.g. terrain tiles) are treated as ground, smaller ones (houses, trees) are not
float constexpr terrain_model_radius = 50.0f;
// ground is searched up to this far above the height interpolated from the outline points,
// so hills inside the outline are found but bridges or roofs high above it are not
double constexpr height_tolerance = 50.0;
if (m_fill_points.size() < 3)
{
m_fill_status = "Outline needs at least 3 points";
return;
}
// model package
std::vector<std::string> package;
if (m_fill_package == 0)
package = m_fill_custom;
else
package = ui()->nodebank_group_templates(static_cast<std::size_t>(m_fill_package - 1));
package.erase(std::remove_if(package.begin(), package.end(), [](std::string const &Template) { return Template.empty(); }), package.end());
if (package.empty())
{
m_fill_status = "Selected model package is empty";
return;
}
// area bounds
glm::dvec2 bmin(std::numeric_limits<double>::max());
glm::dvec2 bmax(-std::numeric_limits<double>::max());
for (auto const &p : m_fill_points)
{
bmin = glm::min(bmin, glm::dvec2(p.x, p.z));
bmax = glm::max(bmax, glm::dvec2(p.x, p.z));
}
double const area = polygon_area_xz(m_fill_points);
auto const target = static_cast<std::size_t>(std::min<double>(std::round(area / 10000.0 * std::max(0.0f, m_fill_density)), max_objects));
if (target == 0)
{
m_fill_status = "Density too low for this area, nothing to place";
return;
}
// scatter points: random samples inside the outline, rejecting the ones closer than the minimal spacing
// to an already accepted point (checked on a hashed grid with cell size == spacing)
double const spacing = std::max(0.0f, m_fill_min_spacing);
std::unordered_map<std::int64_t, std::vector<std::size_t>> occupancy;
auto const cell_key = [](std::int64_t const X, std::int64_t const Z) { return (X << 32) ^ (Z & 0xffffffff); };
std::vector<glm::dvec2> points;
points.reserve(target);
for (std::size_t attempt = 0; attempt < target * 30 && points.size() < target; ++attempt)
{
glm::dvec2 const p(LocalRandom(bmin.x, bmax.x), LocalRandom(bmin.y, bmax.y));
if (false == point_in_polygon_xz(m_fill_points, p.x, p.y))
continue;
if (spacing > 0.0)
{
auto const cx = static_cast<std::int64_t>(std::floor(p.x / spacing));
auto const cz = static_cast<std::int64_t>(std::floor(p.y / spacing));
bool free = true;
for (std::int64_t dz = -1; dz <= 1 && free; ++dz)
for (std::int64_t dx = -1; dx <= 1 && free; ++dx)
{
auto const lookup = occupancy.find(cell_key(cx + dx, cz + dz));
if (lookup == occupancy.end())
continue;
for (auto const idx : lookup->second)
if (glm::distance(points[idx], p) < spacing)
{
free = false;
break;
}
}
if (!free)
continue;
occupancy[cell_key(cx, cz)].push_back(points.size());
}
points.push_back(p);
}
// ground geometry within the area. shapes hold the (legacy) terrain, large instances the terrain tiles
std::vector<world_triangle> triangles;
glm::dvec2 const center = (bmin + bmax) * 0.5;
float const radius = static_cast<float>(glm::length(bmax - bmin) * 0.5);
auto const sections = simulation::Region->sections(glm::dvec3(center.x, 0.0, center.y), radius); // copy, the result is a scratchpad
for (auto *section : sections)
{
for (auto const &shape : section->m_shapes)
gather_shape_triangles(shape, bmin, bmax, triangles);
for (auto &cell : section->m_cells)
{
double const r = cell.m_area.radius;
if (cell.m_area.center.x + r < bmin.x || cell.m_area.center.x - r > bmax.x || cell.m_area.center.z + r < bmin.y || cell.m_area.center.z - r > bmax.y)
continue;
for (auto const &shape : cell.m_shapesopaque)
gather_shape_triangles(shape, bmin, bmax, triangles);
if (false == m_fill_models_as_ground)
continue;
for (auto *instance : cell.m_instancesopaque)
{
if (instance == nullptr || instance->Model() == nullptr || instance->radius() < terrain_model_radius)
continue;
std::vector<world_triangle> modeltriangles;
gather_submodel_triangles(instance->Model()->Root, instance_matrix(*instance), modeltriangles);
for (auto const &t : modeltriangles)
if (std::max({t[0].x, t[1].x, t[2].x}) >= bmin.x && std::min({t[0].x, t[1].x, t[2].x}) <= bmax.x && std::max({t[0].z, t[1].z, t[2].z}) >= bmin.y &&
std::min({t[0].z, t[1].z, t[2].z}) <= bmax.y)
triangles.push_back(t);
}
}
}
triangle_grid const ground(std::move(triangles), bmin, bmax);
auto const terrains = active_terrains();
auto const rotation_mode = m_fill_random_rotation ? functions_panel::RANDOM : ui()->rot_mode();
auto const fixed_rotation_value = ui()->rot_val();
float const scalemin = std::max(0.01f, std::min(m_fill_scale_min, m_fill_scale_max));
float const scalemax = std::max(0.01f, std::max(m_fill_scale_min, m_fill_scale_max));
std::vector<TAnimModel *> created;
created.reserve(points.size());
std::size_t unsupported = 0;
for (auto const &p : points)
{
// reference height: the outline points, weighted by inverse squared distance
double weights = 0.0, reference = 0.0;
for (auto const &v : m_fill_points)
{
double const w = 1.0 / std::max(1e-6, glm::length2(glm::dvec2(v.x, v.z) - p));
weights += w;
reference += w * v.y;
}
reference /= weights;
double const ceiling = reference + height_tolerance;
double y = -std::numeric_limits<double>::max();
bool found = ground.height_at(p.x, p.y, ceiling, y);
for (editor_terrain *terrain : terrains)
{
if (!terrain->contains(p.x, p.y))
continue;
double const h = terrain->height_at(p.x, p.y);
if (h <= ceiling && (!found || h > y))
{
y = h;
found = true;
}
}
if (!found)
{
y = reference;
++unsupported;
}
glm::dvec3 const location(p.x, y, p.y);
if (!simulation::Region->point_inside(location))
continue;
auto const &src = package[package.size() > 1 ? std::min(package.size() - 1, static_cast<std::size_t>(LocalRandom(0.0, static_cast<double>(package.size())))) : 0];
TAnimModel *cloned = simulation::State.create_model(src, "editor_", location);
if (!cloned)
continue;
cloned->m_name = "editor_" + cloned->uuid.to_string();
apply_rotation_for_new_node(cloned, rotation_mode, fixed_rotation_value);
if (scalemin != 1.0f || scalemax != 1.0f)
cloned->Scale(static_cast<float>(LocalRandom(scalemin, scalemax)));
created.push_back(cloned);
}
// a new fill replaces the "last fill" undo set; the previous objects stay in the scene
m_fill_last = std::move(created);
m_fill_status = "Placed " + std::to_string(m_fill_last.size()) + " of " + std::to_string(target) + " objects";
if (points.size() < target)
m_fill_status += " (limited by min. spacing)";
if (unsupported > 0)
m_fill_status += ", " + std::to_string(unsupported) + " without ground found (height interpolated)";
WriteLog("Editor: area fill - " + m_fill_status, logtype::generic);
}
void editor_mode::draw_area_fill_outline() const
{
if (m_fill_points.empty())
return;
// same camera-relative view and clean perspective the transform gizmo uses
ImGuiIO const &io = ImGui::GetIO();
glm::mat4 const view = GfxRenderer->Camera_View_Matrix();
glm::dvec3 const camerapos = GfxRenderer->Camera_Position();
float const fovy = glm::radians(Global.FieldOfView / Global.ZoomFactor);
float const aspect = io.DisplaySize.y > 0.0f ? io.DisplaySize.x / io.DisplaySize.y : 1.0f;
glm::mat4 const viewprojection = glm::perspective(fovy, aspect, 0.1f, 10000.0f) * view;
auto const to_clip = [&](glm::dvec3 const &Point) { return viewprojection * glm::vec4(glm::vec3(Point - camerapos), 1.0f); };
auto const to_screen = [&](glm::vec4 const &Clip) {
return ImVec2((Clip.x / Clip.w * 0.5f + 0.5f) * io.DisplaySize.x, (0.5f - Clip.y / Clip.w * 0.5f) * io.DisplaySize.y);
};
float constexpr nearw = 0.1f;
ImDrawList *drawlist = ImGui::GetBackgroundDrawList();
ImU32 const edgecolor = IM_COL32(255, 200, 40, 230);
ImU32 const closingcolor = IM_COL32(255, 200, 40, 110);
std::size_t const count = m_fill_points.size();
for (std::size_t i = 0; i < count; ++i)
{
bool const closing = (i + 1 == count);
if (closing && count < 3)
break;
glm::vec4 a = to_clip(m_fill_points[i]);
glm::vec4 b = to_clip(m_fill_points[(i + 1) % count]);
// clip the edge against the near plane, so points behind the camera don't flip across the screen
if (a.w < nearw && b.w < nearw)
continue;
if (a.w < nearw)
a = glm::mix(a, b, (nearw - a.w) / (b.w - a.w));
else if (b.w < nearw)
b = glm::mix(b, a, (nearw - b.w) / (a.w - b.w));
drawlist->AddLine(to_screen(a), to_screen(b), closing ? closingcolor : edgecolor, 2.0f);
}
for (std::size_t i = 0; i < count; ++i)
{
glm::vec4 const c = to_clip(m_fill_points[i]);
if (c.w < nearw)
continue;
drawlist->AddCircleFilled(to_screen(c), i == 0 ? 6.0f : 4.0f, i == 0 ? IM_COL32(255, 90, 40, 255) : edgecolor);
}
}
void editor_mode::render_area_fill()
{
ImGui::Begin("Area fill", nullptr, ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoFocusOnAppearing);
ImGui::TextUnformatted("LMB: add outline point, Backspace: remove last point");
double const area = polygon_area_xz(m_fill_points);
ImGui::Text("Points: %zu Area: %.0f m2 (%.2f ha)", m_fill_points.size(), area, area / 10000.0);
if (ImGui::Button("Remove last point") && !m_fill_points.empty())
m_fill_points.pop_back();
ImGui::SameLine();
if (ImGui::Button("Clear outline"))
m_fill_points.clear();
ImGui::Separator();
// model package: a node bank group, or a custom set assembled from node bank templates
auto const groups = ui()->nodebank_groups();
m_fill_package = std::clamp(m_fill_package, 0, static_cast<int>(groups.size()));
std::string const current = m_fill_package == 0 ? std::string("Custom set") : groups[m_fill_package - 1];
ImGui::SetNextItemWidth(250.0f);
if (ImGui::BeginCombo("Model package", current.c_str()))
{
if (ImGui::Selectable("Custom set", m_fill_package == 0))
m_fill_package = 0;
for (int i = 0; i < static_cast<int>(groups.size()); ++i)
{
auto const label = groups[i] + "##fillgroup" + std::to_string(i);
if (ImGui::Selectable(label.c_str(), m_fill_package == i + 1))
m_fill_package = i + 1;
}
ImGui::EndCombo();
}
if (m_fill_package == 0)
{
ImGui::BeginChild("fill_custom_set", ImVec2(350.0f, 110.0f), true);
for (int i = 0; i < static_cast<int>(m_fill_custom.size()); ++i)
{
auto const label = template_label(m_fill_custom[i]) + "##fillcustom" + std::to_string(i);
if (ImGui::Selectable(label.c_str(), m_fill_custom_idx == i))
m_fill_custom_idx = i;
}
ImGui::EndChild();
if (ImGui::Button("Add selected template"))
{
// the node bank selection, not a random pick from the brush set
auto const *src = ui()->get_active_node_template(true);
if (src && !src->empty())
m_fill_custom.push_back(*src);
}
ImGui::SameLine();
if (ImGui::Button("Remove") && m_fill_custom_idx >= 0 && m_fill_custom_idx < static_cast<int>(m_fill_custom.size()))
{
m_fill_custom.erase(m_fill_custom.begin() + m_fill_custom_idx);
m_fill_custom_idx = -1;
}
ImGui::SameLine();
if (ImGui::Button("Clear set"))
{
m_fill_custom.clear();
m_fill_custom_idx = -1;
}
}
else
{
ImGui::Text("Templates in group: %zu", ui()->nodebank_group_templates(static_cast<std::size_t>(m_fill_package - 1)).size());
}
ImGui::Separator();
ImGui::SetNextItemWidth(120.0f);
ImGui::InputFloat("Density (objects/ha)", &m_fill_density, 10.0f, 100.0f, "%.1f");
m_fill_density = std::max(0.0f, m_fill_density);
ImGui::SetNextItemWidth(120.0f);
ImGui::InputFloat("Min. spacing (m)", &m_fill_min_spacing, 0.5f, 2.0f, "%.1f");
m_fill_min_spacing = std::max(0.0f, m_fill_min_spacing);
ImGui::SetNextItemWidth(200.0f);
ImGui::DragFloatRange2("Scale", &m_fill_scale_min, &m_fill_scale_max, 0.01f, 0.1f, 5.0f, "min %.2f", "max %.2f");
ImGui::Checkbox("Random rotation (off: Functions panel setting)", &m_fill_random_rotation);
ImGui::Checkbox("Large models count as ground (terrain tiles)", &m_fill_models_as_ground);
ImGui::Text("Estimated objects: %.0f", std::round(area / 10000.0 * m_fill_density));
if (ImGui::Button("Fill area"))
run_area_fill();
ImGui::SameLine();
std::string const undolabel = "Undo last fill (" + std::to_string(m_fill_last.size()) + ")";
if (ImGui::Button(undolabel.c_str()) && !m_fill_last.empty())
undo_last_area_fill();
if (!m_fill_status.empty())
ImGui::TextUnformatted(m_fill_status.c_str());
ImGui::End();
}
void editor_mode::render_gizmo()
{
// the transform gizmo is suppressed while editing terrain, so the brush/chunk tool owns the mouse
if (!m_gizmo_enabled || m_terrain_sculpt || m_chunk_edit)
{
m_gizmo_using = false;
return;
}
// compact control window: lets the user pick the transform mode without keyboard shortcuts
ImGui::Begin("Gizmo", nullptr, ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoFocusOnAppearing);
int op = static_cast<int>(m_gizmo_op);
ImGui::RadioButton("Translate (Q)", &op, static_cast<int>(gizmo_operation::translate));
ImGui::SameLine();
ImGui::RadioButton("Rotate (W)", &op, static_cast<int>(gizmo_operation::rotate));
ImGui::SameLine();
ImGui::RadioButton("Scale (E)", &op, static_cast<int>(gizmo_operation::scale));
m_gizmo_op = static_cast<gizmo_operation>(op);
if (m_gizmo_op != gizmo_operation::scale) // ImGuizmo always scales in local space
ImGui::Checkbox("Local space (R)", &m_gizmo_local);
if (m_gizmo_op == gizmo_operation::translate)
{
ImGui::SetNextItemWidth(120.0f);
ImGui::InputFloat("Snap (hold Ctrl)", &m_gizmo_snap);
if (m_gizmo_snap < 0.0f)
m_gizmo_snap = 0.0f;
}
if (!m_node)
ImGui::TextDisabled("No node selected");
ImGui::End();
if (!m_node)
{
m_gizmo_using = false;
return;
}
ImGuizmo::BeginFrame();
ImGuizmo::SetOrthographic(false);
ImGuiIO const &io = ImGui::GetIO();
ImGuizmo::SetRect(0.0f, 0.0f, io.DisplaySize.x, io.DisplaySize.y);
// the view matrix comes from the most recent color pass and is camera-relative
// (rotation only), so the gizmo is positioned relative to the camera as well.
glm::mat4 const view = GfxRenderer->Camera_View_Matrix();
glm::dvec3 const camerapos = GfxRenderer->Camera_Position();
// the engine's own projection bakes in reverse-Z (and screen orientation), which ImGuizmo
// doesn't expect; rebuild a clean, standard perspective that matches the rendered view.
// for the main viewport the engine uses a symmetric frustum with this exact fov/aspect.
float const fovy = glm::radians(Global.FieldOfView / Global.ZoomFactor);
float const aspect = io.DisplaySize.y > 0.0f ? io.DisplaySize.x / io.DisplaySize.y : 1.0f;
glm::mat4 const projection = glm::perspective(fovy, aspect, 0.1f, 10000.0f);
// rotation/scale are only meaningful for instanced models; other node types translate only
TAnimModel *model = dynamic_cast<TAnimModel *>(m_node);
glm::vec3 const relativepos = glm::vec3(m_node->location() - camerapos);
glm::vec3 const angles = model ? model->Angles() : glm::vec3(0.0f);
glm::vec3 const scalevec = model ? model->Scale() : glm::vec3(1.0f);
// build the gizmo model matrix from the node's current translation + rotation + scale
float const translation[3] = {relativepos.x, relativepos.y, relativepos.z};
float const rotation[3] = {angles.x, angles.y, angles.z};
float const scale[3] = {scalevec.x, scalevec.y, scalevec.z};
glm::mat4 matrix(1.0f);
ImGuizmo::RecomposeMatrixFromComponents(translation, rotation, scale, glm::value_ptr(matrix));
// map the editor's transform mode onto ImGuizmo; fall back to translate for non-models
ImGuizmo::OPERATION operation = ImGuizmo::TRANSLATE;
EditorSnapshot::Action action = EditorSnapshot::Action::Move;
if (model && m_gizmo_op == gizmo_operation::rotate)
{
operation = ImGuizmo::ROTATE;
action = EditorSnapshot::Action::Rotate;
}
else if (model && m_gizmo_op == gizmo_operation::scale)
{
operation = ImGuizmo::SCALE;
action = EditorSnapshot::Action::Scale;
}
ImGuizmo::MODE const mode = m_gizmo_local ? ImGuizmo::LOCAL : ImGuizmo::WORLD;
// optional snapping while Ctrl is held (metres / degrees / scale factor depending on mode)
glm::vec3 snapvalue(0.0f);
if (operation == ImGuizmo::TRANSLATE)
snapvalue = glm::vec3(m_gizmo_snap);
else if (operation == ImGuizmo::ROTATE)
snapvalue = glm::vec3(5.0f);
else
snapvalue = glm::vec3(0.1f);
float const *snap = Global.ctrlState && snapvalue.x > 0.0f ? glm::value_ptr(snapvalue) : nullptr;
ImGuizmo::Manipulate(glm::value_ptr(view), glm::value_ptr(projection),
operation, mode, glm::value_ptr(matrix), nullptr, snap);
if (ImGuizmo::IsUsing())
{
// record a single undo snapshot at the start of the drag
if (!m_gizmo_using)
{
push_snapshot(m_node, action);
m_gizmo_using = true;
}
float newtranslation[3], newrotation[3], newscale[3];
ImGuizmo::DecomposeMatrixToComponents(glm::value_ptr(matrix), newtranslation, newrotation, newscale);
if (operation == ImGuizmo::ROTATE && model)
{
// apply the rotation delta relative to the model's current orientation
glm::vec3 const newangles(newrotation[0], newrotation[1], newrotation[2]);
m_editor.rotate(model, newangles - model->Angles(), 0.0f);
}
else if (operation == ImGuizmo::SCALE && model)
{
model->Scale(glm::vec3(newscale[0], newscale[1], newscale[2]));
}
else
{
glm::dvec3 const newworldpos = camerapos + glm::dvec3(newtranslation[0], newtranslation[1], newtranslation[2]);
// pass Snaptoground == true so the gizmo's Y component is applied (free 3D move)
m_editor.translate(m_node, newworldpos, true);
}
}
else
{
m_gizmo_using = false;
}
}
void editor_mode::update_camera(double const Deltatime)
{
Camera.Update();
// focus animation runs after Camera.Update() so it overrides any residual velocity/rotation;
// it smoothly drives both position and orientation toward the framed object
if (m_focus_active)
{
m_focus_time += Deltatime;
double t = m_focus_duration > 0.0 ? m_focus_time / m_focus_duration : 1.0;
if (t >= 1.0)
t = 1.0;
// smoothstep easing
float const s = static_cast<float>(t * t * (3.0 - 2.0 * t));
Camera.Pos = glm::mix(m_focus_start_pos, m_focus_target_pos, static_cast<double>(s));
// interpolate angles, taking the shortest path around the yaw wrap-around
constexpr float TWO_PI = 6.283185307179586f;
float const dyaw = std::remainder(m_focus_target_angle.y - m_focus_start_angle.y, TWO_PI);
Camera.Angle.x = m_focus_start_angle.x + (m_focus_target_angle.x - m_focus_start_angle.x) * s;
Camera.Angle.y = m_focus_start_angle.y + dyaw * s;
Camera.Angle.z = m_focus_start_angle.z + (m_focus_target_angle.z - m_focus_start_angle.z) * s;
// suppress any residual fly velocity so it doesn't fight the animation
Camera.Velocity = glm::dvec3(0.0);
if (t >= 1.0)
m_focus_active = false;
}
// reset window state (will be set again if UI requires it)
Global.CabWindowOpen = false;
// publish camera back to global copy
Global.pCamera = Camera;
}
void editor_mode::enter()
{
m_statebackup = {Global.pCamera, FreeFlyModeFlag, Global.ControlPicking};
Camera = Global.pCamera;
if (!FreeFlyModeFlag)
{
auto const *vehicle = Camera.m_owner;
if (vehicle)
{
const int cab = vehicle->MoverParameters->CabOccupied == 0 ? 1 : vehicle->MoverParameters->CabOccupied;
const glm::dvec3 left = vehicle->VectorLeft() * (double)cab;
Camera.Pos = glm::dvec3(Camera.Pos.x, vehicle->GetPosition().y, Camera.Pos.z) + left * vehicle->GetWidth() + glm::dvec3(1.25f * left.x, 1.6f, 1.25f * left.z);
Camera.m_owner = nullptr;
Camera.LookAt = vehicle->GetPosition();
Camera.RaLook(); // single camera reposition
FreeFlyModeFlag = true;
}
}
Global.ControlPicking = true;
EditorModeFlag = true;
Application.set_cursor(GLFW_CURSOR_NORMAL);
}
void editor_mode::exit()
{
EditorModeFlag = false;
Global.ControlPicking = m_statebackup.picking;
FreeFlyModeFlag = m_statebackup.freefly;
Global.pCamera = m_statebackup.camera;
g_redo.clear();
m_history.clear();
m_fill_last.clear();
// drop selection so a stale/dangling node pointer isn't used on the next editor session
m_node = nullptr;
m_gizmo_using = false;
ui()->set_node(nullptr);
Application.set_cursor(Global.ControlPicking ? GLFW_CURSOR_NORMAL : GLFW_CURSOR_DISABLED);
if (!Global.ControlPicking)
{
Application.set_cursor_pos(0, 0);
}
}
void editor_mode::on_key(int const Key, int const Scancode, int const Action, int const Mods)
{
#ifndef __unix__
Global.shiftState = Mods & GLFW_MOD_SHIFT ? true : false;
Global.ctrlState = Mods & GLFW_MOD_CONTROL ? true : false;
Global.altState = Mods & GLFW_MOD_ALT ? true : false;
#endif
bool anyModifier = Mods & (GLFW_MOD_SHIFT | GLFW_MOD_CONTROL | GLFW_MOD_ALT);
// first give UI a chance to handle the key
if (!anyModifier && m_userinterface->on_key(Key, Action))
return;
// gizmo transform shortcuts (Q/W/E/R) — only when the camera isn't being flown (RMB up).
// handled before the camera keyboard step because Q/W/E are also the fly-mode movement keys,
// which would otherwise consume them.
if (!anyModifier && is_press(Action)
&& m_input.mouse.button(GLFW_MOUSE_BUTTON_RIGHT) != GLFW_PRESS)
{
bool handled = true;
switch (Key)
{
case GLFW_KEY_Q: m_gizmo_op = gizmo_operation::translate; break;
case GLFW_KEY_W: m_gizmo_op = gizmo_operation::rotate; break;
case GLFW_KEY_E: m_gizmo_op = gizmo_operation::scale; break;
case GLFW_KEY_R: m_gizmo_local = !m_gizmo_local; break;
default: handled = false; break;
}
if (handled)
return;
}
// then internal input handling
if (m_input.keyboard.key(Key, Action))
return;
if (Action == GLFW_RELEASE)
return;
// shortcuts: undo/redo
if (Global.ctrlState && Key == GLFW_KEY_Z && is_press(Action))
{
undo_last();
return;
}
if (Global.ctrlState && Key == GLFW_KEY_Y && is_press(Action))
{
redo_last();
return;
}
// legacy hardcoded keyboard commands
switch (Key)
{
case GLFW_KEY_F11:
if (Action != GLFW_PRESS)
break;
if (!Global.ctrlState && !Global.shiftState)
{
Application.pop_mode();
}
else if (Global.ctrlState && Global.shiftState)
{
simulation::State.export_as_text(Global.SceneryFile);
}
break;
case GLFW_KEY_F12:
if (Global.ctrlState && Global.shiftState && is_press(Action))
{
DebugModeFlag = !DebugModeFlag;
}
break;
case GLFW_KEY_DELETE:
if (is_press(Action))
{
TAnimModel *model = dynamic_cast<TAnimModel *>(m_node);
if (model)
{
// record deletion for undo (serialize full node)
std::string as_text;
model->export_as_text(as_text);
std::string debug = "Deleting node: " + as_text + "\nSerialized data:\n";
push_snapshot(model, EditorSnapshot::Action::Delete, as_text);
WriteLog(debug, logtype::generic);
// clear history pointers referencing this model before actually deleting it
nullify_history_pointers(model);
remove_from_hierarchy(model);
m_node = nullptr;
m_dragging = false;
ui()->set_node(nullptr);
simulation::State.delete_model(model);
}
}
break;
case GLFW_KEY_BACKSPACE:
// area fill: remove the last outline point
if (is_press(Action) && ui()->mode() == nodebank_panel::FILL && !m_fill_points.empty())
m_fill_points.pop_back();
break;
case GLFW_KEY_F:
if (is_press(Action))
{
if(!m_node)
break;
// start smooth focus camera on selected node
start_focus(m_node, 0.6);
}
break;
case GLFW_KEY_END:
if (is_press(Action) && m_node)
{
// Unreal-style "snap to floor": drop the selected node onto the surface below it.
// works against triangle geometry (shape_node terrain / opaque shapes); once a proper
// editable terrain mesh exists, dropping onto it works without further changes here.
snap_to_ground(m_node);
}
break;
default:
break;
}
}
void editor_mode::on_cursor_pos(double const Horizontal, double const Vertical)
{
// object transforms are handled by the gizmo now; here we only forward the cursor to the
// mouse input, which rotates the camera while the right mouse button is held (panning mode)
m_input.mouse.position(Horizontal, Vertical);
}
void editor_mode::on_mouse_button(int const Button, int const Action, int const Mods)
{
// UI first
if (m_userinterface->on_mouse_button(Button, Action))
{
m_input.mouse.button(Button, Action);
return;
}
// in chunk-edit mode the left button adds a neighbouring chunk (Shift = delete the clicked one)
if (m_chunk_edit && Button == GLFW_MOUSE_BUTTON_LEFT)
{
if (is_press(Action))
handle_chunk_edit_click(Global.shiftState);
m_input.mouse.button(Button, Action);
return;
}
// in terrain sculpt mode the left button paints the terrain instead of picking nodes
if (m_terrain_sculpt && Button == GLFW_MOUSE_BUTTON_LEFT)
{
mouseHold = is_press(Action);
m_input.mouse.button(Button, Action);
return;
}
if (Button == GLFW_MOUSE_BUTTON_LEFT)
{
auto const mode = ui()->mode();
auto const rotation_mode = ui()->rot_mode();
auto const fixed_rotation_value = ui()->rot_val();
if (is_press(Action))
{
mouseHold = true;
m_brush_has_last = false; // every brush stroke starts with a placement
// in area fill mode the left button only adds outline points, it doesn't touch the selection
if (mode == nodebank_panel::FILL)
{
GfxRenderer->Pick_Node_Callback([this](scene::basic_node * /*node*/) {
if (viewport_click())
add_area_fill_point();
});
m_input.mouse.button(Button, Action);
return;
}
// delegate node picking behaviour depending on current panel mode.
// NOTE: the pick is resolved a few frames later, often after the button was already released,
// so the callback mustn't depend on the button still being held
GfxRenderer->Pick_Node_Callback(
[this, mode, rotation_mode, fixed_rotation_value](scene::basic_node *node) {
// the press turned out to be meant for the UI
if (!viewport_click())
return;
m_node = nullptr;
// ignore picks that are beyond allowed placement distance
if (node) {
double const dist = glm::distance(node->location(), glm::dvec3{Global.pCamera.Pos});
if (dist > static_cast<double>(kMaxPlacementDistance))
return;
}
if (mode == nodebank_panel::MODIFY)
{
m_node = node;
ui()->set_node(m_node);
}
else if (mode == nodebank_panel::COPY)
{
if (node && typeid(*node) == typeid(TAnimModel))
{
std::string as_text;
node->export_as_text(as_text);
ui()->add_node_template(as_text);
}
m_dragging = false;
}
else if (mode == nodebank_panel::ADD)
{
const std::string *src = ui()->get_active_node_template();
if (!src)
return;
std::string name = "editor_";
glm::dvec3 mouseOffset = clamp_mouse_offset_to_max(GfxRenderer->Mouse_Position());
TAnimModel *cloned = simulation::State.create_model(*src, name, Camera.Pos + mouseOffset);
if (!cloned)
return;
std::string new_name = "editor_" + cloned->uuid.to_string();
cloned->m_name = new_name;
apply_rotation_for_new_node(cloned, rotation_mode, fixed_rotation_value);
// record addition for undo (after rotation, so a redo recreates the same thing)
std::string as_text;
cloned->export_as_text(as_text);
push_snapshot(cloned, EditorSnapshot::Action::Add, as_text);
m_node = cloned;
ui()->set_node(m_node);
}
});
m_dragging = true;
m_takesnapshot = true;
}
else
{
if (is_release(Action))
mouseHold = false;
m_dragging = false;
}
}
else if (Button == GLFW_MOUSE_BUTTON_RIGHT)
{
// game-engine style look: hide & grab the cursor while flying, restore it on release
Application.set_cursor(is_press(Action) ? GLFW_CURSOR_DISABLED : GLFW_CURSOR_NORMAL);
}
m_input.mouse.button(Button, Action);
}
void editor_mode::render_change_history(){
ImGui::Begin("Editor History", &m_change_history, ImGuiWindowFlags_AlwaysAutoResize);
int maxsize = m_max_history_size;
if (ImGui::InputInt("Max history size", &maxsize))
{
m_max_history_size = std::max(0, maxsize);
if ((int)m_history.size() > m_max_history_size && m_max_history_size >= 0)
{
auto remove_count = (int)m_history.size() - m_max_history_size;
m_history.erase(m_history.begin(), m_history.begin() + remove_count);
// adjust selected index
if (m_selected_history_idx >= (int)m_history.size())
m_selected_history_idx = (int)m_history.size() - 1;
}
}
float dist = kMaxPlacementDistance;
if (ImGui::InputFloat("Max placement distance", &dist))
{
kMaxPlacementDistance = std::max(0.0f, dist);
}
ImGui::Separator();
ImGui::Text("History (newest at end): %zu entries", m_history.size());
ImGui::BeginChild("history_list", ImVec2(400, 200), true);
for (int i = 0; i < (int)m_history.size(); ++i)
{
auto &s = m_history[i];
char buf[256];
std::snprintf(buf, sizeof(buf), "%3d: %s %s pos=(%.1f,%.1f,%.1f)", i,
s.action == EditorSnapshot::Action::Add ? "ADD" :
s.action == EditorSnapshot::Action::Delete ? "DEL" :
s.action == EditorSnapshot::Action::Move ? "MOV" :
s.action == EditorSnapshot::Action::Rotate ? "ROT" :
s.action == EditorSnapshot::Action::Scale ? "SCA" : "OTH",
s.node_name.empty() ? "(noname)" : s.node_name.c_str(),
s.position.x, s.position.y, s.position.z);
if (ImGui::Selectable(buf, m_selected_history_idx == i))
m_selected_history_idx = i;
}
ImGui::EndChild();
ImGui::Separator();
if (ImGui::Button("Clear History"))
{
m_history.clear();
g_redo.clear();
m_selected_history_idx = -1;
}
ImGui::SameLine();
ImGui::SameLine();
if (ImGui::Button("Undo Selected"))
{
if (m_selected_history_idx >= 0 && m_selected_history_idx < (int)m_history.size())
{
int target = m_selected_history_idx;
int undoCount = (int)m_history.size() - 1 - target;
for (int k = 0; k < undoCount; ++k)
undo_last();
m_selected_history_idx = -1;
}
}
ImGui::End();
}
void editor_mode::on_event_poll()
{
// game-engine style camera: WSAD/EQ only fly the camera while the right mouse button is held.
// when it's released the keyboard is free for gizmo shortcuts, and we flush a zero-movement
// command once so the camera doesn't keep coasting on the last velocity it was given.
bool const flying = m_input.mouse.button(GLFW_MOUSE_BUTTON_RIGHT) == GLFW_PRESS;
if (flying)
{
m_input.poll();
}
else if (m_camera_flying)
{
m_camera_relay.post(user_command::movehorizontal, 0.0, 0.0, GLFW_PRESS, 0);
m_camera_relay.post(user_command::movevertical, 0.0, 0.0, GLFW_PRESS, 0);
}
m_camera_flying = flying;
}
bool editor_mode::is_command_processor() const
{
return false;
}
bool editor_mode::focus_active()
{
return m_focus_active;
}
void editor_mode::set_focus_active(bool isActive)
{
m_focus_active = isActive;
}
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