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Plantlike: Fix visual_scale being applied squared

This re-applies 2 commits that were reverted.

Visual_scale was applied twice to plantlike by accident sometime between
2011 and 2013, squaring the requested scale value. Visual_scale is
correctly applied once in it's other uses in signlike and torchlike.

Two lines of code are removed, they also had no effect for the vast
majority of nodes with the default visual_scale of 1.0.
The texture continues to have it's base at ground level.

Send sqrt(visual_scale) to old clients.

Keep compatibility with protocol < 30 clients now that visual_scale
is no longer applied twice to plantlike drawtype and mods are being
updated to a new value.
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paramat committed Feb 10, 2017
1 parent bb4db84 commit 1de08e196182498a931b496f79b1c1eaf3de7ca4
Showing with 9 additions and 5 deletions.
  1. +0 −2 src/content_mapblock.cpp
  2. +2 −0 src/network/networkprotocol.h
  3. +7 −3 src/nodedef.cpp
@@ -1602,8 +1602,6 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
}

for (int i = 0; i < 4; i++) {
vertices[i].Pos *= f.visual_scale;
vertices[i].Pos.Y += BS/2 * (f.visual_scale - 1);
if (data->m_smooth_lighting)
vertices[i].Color = blendLight(frame, vertices[i].Pos, tile.color);
vertices[i].Pos += intToFloat(p, BS);
@@ -146,6 +146,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
PROTOCOL VERSION 30:
New ContentFeatures serialization version
Add node and tile color and palette
Fix plantlike visual_scale being applied squared and add compatibility
with pre-30 clients by sending sqrt(visual_scale)
*/

#define LATEST_PROTOCOL_VERSION 30
@@ -1611,6 +1611,10 @@ void ContentFeatures::serializeOld(std::ostream &os, u16 protocol_version) const
compatible_param_type_2 = CPT2_WALLMOUNTED;
}

float compatible_visual_scale = visual_scale;
if (protocol_version < 30 && drawtype == NDT_PLANTLIKE)
compatible_visual_scale = sqrt(visual_scale);

if (protocol_version == 13)
{
writeU8(os, 5); // version
@@ -1622,7 +1626,7 @@ void ContentFeatures::serializeOld(std::ostream &os, u16 protocol_version) const
writeS16(os, i->second);
}
writeU8(os, drawtype);
writeF1000(os, visual_scale);
writeF1000(os, compatible_visual_scale);
writeU8(os, 6);
for (u32 i = 0; i < 6; i++)
tiledef[i].serialize(os, protocol_version);
@@ -1670,7 +1674,7 @@ void ContentFeatures::serializeOld(std::ostream &os, u16 protocol_version) const
writeS16(os, i->second);
}
writeU8(os, drawtype);
writeF1000(os, visual_scale);
writeF1000(os, compatible_visual_scale);
writeU8(os, 6);
for (u32 i = 0; i < 6; i++)
tiledef[i].serialize(os, protocol_version);
@@ -1724,7 +1728,7 @@ void ContentFeatures::serializeOld(std::ostream &os, u16 protocol_version) const
writeS16(os, i->second);
}
writeU8(os, drawtype);
writeF1000(os, visual_scale);
writeF1000(os, compatible_visual_scale);
writeU8(os, 6);
for (u32 i = 0; i < 6; i++)
tiledef[i].serialize(os, protocol_version);

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