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Decompile fn_17569 (GroundGeometry::CellRectangle)

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Batch #11477 by kyoshi: 0 byte-identical, 1 confirmed by peer review.

- fn_17569 GroundGeometry::CellRectangle: logic confirmed by peer review

Peer-reviewed-by: Yommy, KWDev, cremane, StrawberrysherbetIX
Accepted without human review: peers confirmed the logic ("same" ahead by at least 3, with 70% of the votes).
This commit is contained in:
ragnarok-clanker 2026-11-05 00:43:58 +00:00
commit 0bb17a134a
1 changed files with 27 additions and 11 deletions
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36
Source/Contents/Ground/GroundDecals.cpp
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@ -16,15 +16,21 @@ bool GroundGeometry::CellRectangle(const C3dAttr& terrain, int column, int row,
return false;
}
const int x = (column >> 1) - this->width / 2;
const int z = (row >> 1) - this->height / 2;
const int offsets[4][2] = {{0, 0}, {1, 0}, {0, 1}, {1, 1}};
const int cellColumn = column >> 1;
const int cellRow = row >> 1;
for (unsigned corner = 0; corner < 4; ++corner) {
vertices[corner * 3 + 1] = 0.0f;
vertices[corner * 3] = static_cast<float>(x + offsets[corner][0]) * this->cellSize;
vertices[corner * 3 + 2] = static_cast<float>(z + offsets[corner][1]) * this->cellSize;
}
vertices[1] = 0.0f;
vertices[0] = static_cast<float>(cellColumn - this->width / 2) * this->cellSize;
vertices[2] = static_cast<float>(cellRow - this->height / 2) * this->cellSize;
vertices[4] = 0.0f;
vertices[3] = static_cast<float>(cellColumn - this->width / 2 + 1) * this->cellSize;
vertices[5] = static_cast<float>(cellRow - this->height / 2) * this->cellSize;
vertices[7] = 0.0f;
vertices[6] = static_cast<float>(cellColumn - this->width / 2) * this->cellSize;
vertices[8] = static_cast<float>(cellRow - this->height / 2 + 1) * this->cellSize;
vertices[10] = 0.0f;
vertices[9] = static_cast<float>(cellColumn - this->width / 2 + 1) * this->cellSize;
vertices[11] = static_cast<float>(cellRow - this->height / 2 + 1) * this->cellSize;
return this->OverlayHeights(terrain, vertices, column, row);
}
@ -35,7 +41,13 @@ namespace {
const GroundGeometry& ground, const C3dAttr& terrain, const float* matrix, int column, int row, std::uint32_t color, CTexture& texture, const float* uv,
float bias
) {
float vertices[4][3]{};
float vertices[4][3];
for (auto& vertex : vertices) {
vertex[0] = 0.0f;
vertex[1] = 0.0f;
vertex[2] = 0.0f;
}
if (!ground.CellRectangle(terrain, column, row, vertices[0])) {
return;
@ -72,12 +84,16 @@ namespace {
for (unsigned corner = 0; corner < 4; ++corner) {
primitive->vertices[corner].u = scaleU * uv[corner * 2];
primitive->vertices[corner].v = scaleV * uv[corner * 2 + 1];
primitive->vertices[corner].diffuse = color;
}
primitive->unknown_0018 = 5;
primitive->unknown_001C = 6;
primitive->texture = &texture;
for (unsigned corner = 0; corner < 4; ++corner) {
primitive->vertices[corner].diffuse = color;
}
g_renderer->queues.Submit(primitive, 1, g_renderer->fog.supported != 0, g_depthStart, g_depthEnd);
}
}