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feat(editor): add --gen-mesh-chest treasure chest primitive

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Composite procedural chest: rectangular body box + slightly
inset lid box on top + 3 thin iron bands wrapping around the
body (15% / 50% / 85% along width) + a small lock plate on
the front face. 6 boxes assembled into one batch.

Defaults: 1.4 × 0.9 × 0.9 body with 0.25-tall lid. Useful
for dungeon loot, room decoration, quest objectives. Brings
the procedural mesh primitive set to 27.
This commit is contained in:
Kelsi 2026-05-08 21:19:51 -07:00
parent 6ea2dfcf8c
commit 58d1e40117
2 changed files with 124 additions and 1 deletions
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2
tools/editor/cli_help.cpp
View file

@ -118,6 +118,8 @@ void printUsage(const char* argv0) {
std::printf(" Semicircular arched doorway: two pillars + curved keystone vault (default 12 segs)\n");
std::printf(" --gen-mesh-barrel <wom-base> [topRadius] [midRadius] [height] [hoopThickness]\n");
std::printf(" Tapered barrel: bulges in middle + 2 rim hoops (default 0.4/0.5/1.0/0.06)\n");
std::printf(" --gen-mesh-chest <wom-base> [width] [depth] [bodyHeight] [lidHeight]\n");
std::printf(" Treasure chest: body box + lid box + 3 iron bands + lock plate (default 1.4×0.9×0.9)\n");
std::printf(" Procedural tree: cylindrical trunk + spherical foliage (default 0.1/2.0/0.7)\n");
std::printf(" --displace-mesh <wom-base> <heightmap.png> [scale]\n");
std::printf(" Offset each vertex along its normal by heightmap brightness × scale (default 1.0)\n");

123
tools/editor/main.cpp
View file

@ -555,7 +555,7 @@ int main(int argc, char* argv[]) {
"--gen-mesh-rock", "--gen-mesh-pillar", "--gen-mesh-bridge",
"--gen-mesh-tower", "--gen-mesh-house", "--gen-mesh-fountain",
"--gen-mesh-statue", "--gen-mesh-altar", "--gen-mesh-portal",
"--gen-mesh-archway", "--gen-mesh-barrel",
"--gen-mesh-archway", "--gen-mesh-barrel", "--gen-mesh-chest",
"--gen-texture-gradient",
"--gen-mesh-from-heightmap", "--export-mesh-heightmap",
"--displace-mesh",
@ -21052,6 +21052,127 @@ int main(int argc, char* argv[]) {
std::printf(" vertices : %zu\n", wom.vertices.size());
std::printf(" triangles : %zu\n", wom.indices.size() / 3);
return 0;
} else if (std::strcmp(argv[i], "--gen-mesh-chest") == 0 && i + 1 < argc) {
// Treasure chest: rectangular body box + smaller lid
// box on top + 3 thin iron bands wrapping around the
// body + a small lock plate on the front center face.
// The 27th procedural mesh primitive — useful for
// dungeon loot, room decoration, quest objectives.
std::string womBase = argv[++i];
float width = 1.4f; // along X
float depth = 0.9f; // along Z
float bodyH = 0.9f; // body box height
float lidH = 0.25f; // lid height above body
if (i + 1 < argc && argv[i + 1][0] != '-') {
try { width = std::stof(argv[++i]); } catch (...) {}
}
if (i + 1 < argc && argv[i + 1][0] != '-') {
try { depth = std::stof(argv[++i]); } catch (...) {}
}
if (i + 1 < argc && argv[i + 1][0] != '-') {
try { bodyH = std::stof(argv[++i]); } catch (...) {}
}
if (i + 1 < argc && argv[i + 1][0] != '-') {
try { lidH = std::stof(argv[++i]); } catch (...) {}
}
if (width <= 0 || depth <= 0 || bodyH <= 0 || lidH < 0) {
std::fprintf(stderr,
"gen-mesh-chest: width/depth/bodyH > 0, lidH >= 0\n");
return 1;
}
if (womBase.size() >= 4 &&
womBase.substr(womBase.size() - 4) == ".wom") {
womBase = womBase.substr(0, womBase.size() - 4);
}
wowee::pipeline::WoweeModel wom;
wom.name = std::filesystem::path(womBase).stem().string();
wom.version = 3;
// Box helper — adds 24 unique verts / 12 tris centered
// on (cx, cy, cz) with half-extents (hx, hy, hz). Each
// face gets unique normals for flat shading.
auto addBox = [&](float cx, float cy, float cz,
float hx, float hy, float hz) {
struct Face { glm::vec3 n, du, dv; };
Face faces[6] = {
{{0, 1, 0}, {1, 0, 0}, {0, 0, 1}},
{{0,-1, 0}, {1, 0, 0}, {0, 0,-1}},
{{1, 0, 0}, {0, 0, 1}, {0, 1, 0}},
{{-1,0, 0}, {0, 0,-1}, {0, 1, 0}},
{{0, 0, 1}, {-1,0, 0}, {0, 1, 0}},
{{0, 0,-1}, {1, 0, 0}, {0, 1, 0}},
};
glm::vec3 c(cx, cy, cz);
glm::vec3 ext(hx, hy, hz);
for (const Face& f : faces) {
glm::vec3 center = c + glm::vec3(f.n.x*hx, f.n.y*hy, f.n.z*hz);
glm::vec3 du = glm::vec3(f.du.x*ext.x, f.du.y*ext.y, f.du.z*ext.z);
glm::vec3 dv = glm::vec3(f.dv.x*ext.x, f.dv.y*ext.y, f.dv.z*ext.z);
uint32_t base = static_cast<uint32_t>(wom.vertices.size());
auto push = [&](glm::vec3 p, float u, float v) {
wowee::pipeline::WoweeModel::Vertex vtx;
vtx.position = p; vtx.normal = f.n; vtx.texCoord = {u, v};
wom.vertices.push_back(vtx);
};
push(center - du - dv, 0, 0);
push(center + du - dv, 1, 0);
push(center + du + dv, 1, 1);
push(center - du + dv, 0, 1);
wom.indices.insert(wom.indices.end(),
{base, base + 1, base + 2, base, base + 2, base + 3});
}
};
float hx = width * 0.5f;
float hz = depth * 0.5f;
// Body: y=0 to y=bodyH
addBox(0, bodyH * 0.5f, 0, hx, bodyH * 0.5f, hz);
// Lid: smaller box on top, slightly inset on each side
float lidInset = std::min(width, depth) * 0.04f;
float lidHx = hx - lidInset;
float lidHz = hz - lidInset;
if (lidH > 0.0f && lidHx > 0 && lidHz > 0) {
addBox(0, bodyH + lidH * 0.5f, 0,
lidHx, lidH * 0.5f, lidHz);
}
// 3 iron bands wrapping the body — thin slabs
// protruding ~3% radially on the sides + top.
// Band positions: 15%, 50%, 85% of body width.
float bandThickX = width * 0.04f; // band depth along X
float bandHy = bodyH * 0.5f + 0.005f;
float bandHz = hz + 0.012f;
float bandPositions[3] = {-hx * 0.7f, 0.0f, hx * 0.7f};
for (float bx : bandPositions) {
addBox(bx, bandHy, 0,
bandThickX * 0.5f, bandHy, bandHz);
}
// Lock plate: small thin box on the front face, centered.
// Front face is +Z. Plate sits at z = hz + tiny epsilon.
float lockW = width * 0.10f;
float lockH = bodyH * 0.18f;
float lockY = bodyH * 0.65f;
float lockEps = 0.008f;
addBox(0, lockY, hz + lockEps,
lockW * 0.5f, lockH * 0.5f, lockEps);
wowee::pipeline::WoweeModel::Batch batch;
batch.indexStart = 0;
batch.indexCount = static_cast<uint32_t>(wom.indices.size());
batch.textureIndex = 0;
wom.batches.push_back(batch);
float maxY = bodyH + lidH;
wom.boundMin = glm::vec3(-hx, 0, -hz - 0.012f);
wom.boundMax = glm::vec3( hx, maxY, hz + 0.012f);
if (!wowee::pipeline::WoweeModelLoader::save(wom, womBase)) {
std::fprintf(stderr,
"gen-mesh-chest: failed to save %s.wom\n", womBase.c_str());
return 1;
}
std::printf("Wrote %s.wom\n", womBase.c_str());
std::printf(" width × depth : %.3f × %.3f\n", width, depth);
std::printf(" body H : %.3f\n", bodyH);
std::printf(" lid H : %.3f\n", lidH);
std::printf(" components : body + lid + 3 bands + lock\n");
std::printf(" vertices : %zu\n", wom.vertices.size());
std::printf(" triangles : %zu\n", wom.indices.size() / 3);
return 0;
} else if (std::strcmp(argv[i], "--displace-mesh") == 0 && i + 2 < argc) {
// Displaces each vertex along its current normal by the
// heightmap brightness × scale. UVs determine where each