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feat(editor): NPC scatter snaps each spawn to ground when enabled

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The scatter tool spawned creatures all at the cursor's z-height which
made them hover when scattered over uneven terrain. Added a Snap to
Ground checkbox (defaults to on) that raycasts each scattered NPC and
places it on the actual surface.
This commit is contained in:
Kelsi 2026-05-06 01:35:26 -07:00
parent 13a7adffab
commit 9eae67d574
1 changed files with 14 additions and 0 deletions
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14
tools/editor/editor_ui.cpp
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@ -2015,12 +2015,26 @@ void EditorUI::renderNpcPanel(EditorApp& app) {
if (ImGui::CollapsingHeader("Scatter Tool")) {
static int scatterCount = 5;
static float scatterRadius = 50.0f;
static bool scatterSnap = true;
ImGui::SliderInt("Count", &scatterCount, 1, 30);
ImGui::SliderFloat("Radius##scatter", &scatterRadius, 10.0f, 200.0f);
ImGui::Checkbox("Snap to Ground##scatter", &scatterSnap);
auto& brush = app.getTerrainEditor().brush();
if (ImGui::Button("Scatter at Cursor", ImVec2(-1, 0))) {
if (brush.isActive() && !tmpl.modelPath.empty()) {
size_t before = spawner.spawnCount();
spawner.scatter(tmpl, brush.getPosition(), scatterRadius, scatterCount);
if (scatterSnap) {
auto& tEd = app.getTerrainEditor();
for (size_t i = before; i < spawner.spawnCount(); i++) {
auto& s = spawner.getSpawns()[i];
rendering::Ray ray;
ray.origin = s.position + glm::vec3(0, 0, 500);
ray.direction = glm::vec3(0, 0, -1);
glm::vec3 hit;
if (tEd.raycastTerrain(ray, hit)) s.position.z = hit.z;
}
}
app.markObjectsDirty();
}
}