From 3ee80987086a99803f5a812089ae253ab509cb68 Mon Sep 17 00:00:00 2001
From: Kahrl <kahrl@gmx.net>
Date: Thu, 15 Aug 2013 00:55:35 +0200
Subject: [PATCH] Diagonal liquid animation
---
src/content_mapblock.cpp | 52 ++++++++++++++++------------------------
1 file changed, 20 insertions(+), 32 deletions(-)
diff --git a/src/content_mapblock.cpp b/src/content_mapblock.cpp
index d2509ad5a..929682eaf 100644
--- a/src/content_mapblock.cpp
+++ b/src/content_mapblock.cpp
@@ -653,48 +653,36 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
// -Z towards +Z, thus the direction is +Z.
// Rotate texture to make animation go in flow direction
// Positive if liquid moves towards +Z
- int dz = (corner_levels[side_corners[3][0]] +
+ f32 dz = (corner_levels[side_corners[3][0]] +
corner_levels[side_corners[3][1]]) -
(corner_levels[side_corners[2][0]] +
corner_levels[side_corners[2][1]]);
// Positive if liquid moves towards +X
- int dx = (corner_levels[side_corners[1][0]] +
+ f32 dx = (corner_levels[side_corners[1][0]] +
corner_levels[side_corners[1][1]]) -
(corner_levels[side_corners[0][0]] +
corner_levels[side_corners[0][1]]);
- // -X
- if(-dx >= abs(dz))
- {
- v2f t = vertices[0].TCoords;
- vertices[0].TCoords = vertices[1].TCoords;
- vertices[1].TCoords = vertices[2].TCoords;
- vertices[2].TCoords = vertices[3].TCoords;
- vertices[3].TCoords = t;
- }
- // +X
- if(dx >= abs(dz))
- {
- v2f t = vertices[0].TCoords;
- vertices[0].TCoords = vertices[3].TCoords;
- vertices[3].TCoords = vertices[2].TCoords;
- vertices[2].TCoords = vertices[1].TCoords;
- vertices[1].TCoords = t;
- }
- // -Z
- if(-dz >= abs(dx))
+ f32 tcoord_angle = atan2(dz, dx) * core::RADTODEG ;
+ v2f tcoord_center(0.5, 0.5);
+ v2f tcoord_translate(
+ blockpos_nodes.Z + z,
+ blockpos_nodes.X + x);
+ tcoord_translate.rotateBy(tcoord_angle);
+ tcoord_translate.X -= floor(tcoord_translate.X);
+ tcoord_translate.Y -= floor(tcoord_translate.Y);
+
+ for(s32 i=0; i<4; i++)
{
- v2f t = vertices[0].TCoords;
- vertices[0].TCoords = vertices[3].TCoords;
- vertices[3].TCoords = vertices[2].TCoords;
- vertices[2].TCoords = vertices[1].TCoords;
- vertices[1].TCoords = t;
- t = vertices[0].TCoords;
- vertices[0].TCoords = vertices[3].TCoords;
- vertices[3].TCoords = vertices[2].TCoords;
- vertices[2].TCoords = vertices[1].TCoords;
- vertices[1].TCoords = t;
+ vertices[i].TCoords.rotateBy(
+ tcoord_angle,
+ tcoord_center);
+ vertices[i].TCoords += tcoord_translate;
}
+ v2f t = vertices[0].TCoords;
+ vertices[0].TCoords = vertices[2].TCoords;
+ vertices[2].TCoords = t;
+
u16 indices[] = {0,1,2,2,3,0};
// Add to mesh collector
collector.append(tile_liquid, vertices, 4, indices, 6);
--
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