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Connect rails with connect_to_raillike and shorten the codes
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@SmallJoker @Zeno-
SmallJoker authored and Zeno- committed Mar 21, 2015
1 parent 03e0dd3 commit 709f4a5
Showing 1 changed file with 49 additions and 107 deletions.
156 changes: 49 additions & 107 deletions src/content_mapblock.cpp
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Expand Up @@ -1398,97 +1398,42 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
break;}
case NDT_RAILLIKE:
{
bool is_rail_x [] = { false, false }; /* x-1, x+1 */
bool is_rail_z [] = { false, false }; /* z-1, z+1 */

bool is_rail_z_minus_y [] = { false, false }; /* z-1, z+1; y-1 */
bool is_rail_x_minus_y [] = { false, false }; /* x-1, z+1; y-1 */
bool is_rail_z_plus_y [] = { false, false }; /* z-1, z+1; y+1 */
bool is_rail_x_plus_y [] = { false, false }; /* x-1, x+1; y+1 */

MapNode n_minus_x = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x-1,y,z));
MapNode n_plus_x = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x+1,y,z));
MapNode n_minus_z = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y,z-1));
MapNode n_plus_z = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y,z+1));
MapNode n_plus_x_plus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x+1, y+1, z));
MapNode n_plus_x_minus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x+1, y-1, z));
MapNode n_minus_x_plus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x-1, y+1, z));
MapNode n_minus_x_minus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x-1, y-1, z));
MapNode n_plus_z_plus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y+1, z+1));
MapNode n_minus_z_plus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y+1, z-1));
MapNode n_plus_z_minus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y-1, z+1));
MapNode n_minus_z_minus_y = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y-1, z-1));
bool is_rail_x[6]; /* (-1,-1,0) X (1,-1,0) (-1,0,0) X (1,0,0) (-1,1,0) X (1,1,0) */
bool is_rail_z[6];

content_t thiscontent = n.getContent();
std::string groupname = "connect_to_raillike"; // name of the group that enables connecting to raillike nodes of different kind
int self_group = ((ItemGroupList) nodedef->get(n).groups)[groupname];

if ((nodedef->get(n_minus_x).drawtype == NDT_RAILLIKE
&& ((ItemGroupList) nodedef->get(n_minus_x).groups)[groupname] != self_group)
|| n_minus_x.getContent() == thiscontent)
is_rail_x[0] = true;

if ((nodedef->get(n_minus_x_minus_y).drawtype == NDT_RAILLIKE
&& ((ItemGroupList) nodedef->get(n_minus_x_minus_y).groups)[groupname] != self_group)
|| n_minus_x_minus_y.getContent() == thiscontent)
is_rail_x_minus_y[0] = true;

if ((nodedef->get(n_minus_x_plus_y).drawtype == NDT_RAILLIKE
&& ((ItemGroupList) nodedef->get(n_minus_x_plus_y).groups)[groupname] != self_group)
|| n_minus_x_plus_y.getContent() == thiscontent)
is_rail_x_plus_y[0] = true;

if ((nodedef->get(n_plus_x).drawtype == NDT_RAILLIKE
&& ((ItemGroupList) nodedef->get(n_plus_x).groups)[groupname] != self_group)
|| n_plus_x.getContent() == thiscontent)
is_rail_x[1] = true;

if ((nodedef->get(n_plus_x_minus_y).drawtype == NDT_RAILLIKE
&& ((ItemGroupList) nodedef->get(n_plus_x_minus_y).groups)[groupname] != self_group)
|| n_plus_x_minus_y.getContent() == thiscontent)
is_rail_x_minus_y[1] = true;

if ((nodedef->get(n_plus_x_plus_y).drawtype == NDT_RAILLIKE
&& ((ItemGroupList) nodedef->get(n_plus_x_plus_y).groups)[groupname] != self_group)
|| n_plus_x_plus_y.getContent() == thiscontent)
is_rail_x_plus_y[1] = true;

if ((nodedef->get(n_minus_z).drawtype == NDT_RAILLIKE
&& ((ItemGroupList) nodedef->get(n_minus_z).groups)[groupname] != self_group)
|| n_minus_z.getContent() == thiscontent)
is_rail_z[0] = true;

if ((nodedef->get(n_minus_z_minus_y).drawtype == NDT_RAILLIKE
&& ((ItemGroupList) nodedef->get(n_minus_z_minus_y).groups)[groupname] != self_group)
|| n_minus_z_minus_y.getContent() == thiscontent)
is_rail_z_minus_y[0] = true;

if ((nodedef->get(n_minus_z_plus_y).drawtype == NDT_RAILLIKE
&& ((ItemGroupList) nodedef->get(n_minus_z_plus_y).groups)[groupname] != self_group)
|| n_minus_z_plus_y.getContent() == thiscontent)
is_rail_z_plus_y[0] = true;

if ((nodedef->get(n_plus_z).drawtype == NDT_RAILLIKE
&& ((ItemGroupList) nodedef->get(n_plus_z).groups)[groupname] != self_group)
|| n_plus_z.getContent() == thiscontent)
is_rail_z[1] = true;

if ((nodedef->get(n_plus_z_minus_y).drawtype == NDT_RAILLIKE
&& ((ItemGroupList) nodedef->get(n_plus_z_minus_y).groups)[groupname] != self_group)
|| n_plus_z_minus_y.getContent() == thiscontent)
is_rail_z_minus_y[1] = true;

if ((nodedef->get(n_plus_z_plus_y).drawtype == NDT_RAILLIKE
&& ((ItemGroupList) nodedef->get(n_plus_z_plus_y).groups)[groupname] != self_group)
|| n_plus_z_plus_y.getContent() == thiscontent)
is_rail_z_plus_y[1] = true;

bool is_rail_x_all[] = {false, false};
bool is_rail_z_all[] = {false, false};
is_rail_x_all[0]=is_rail_x[0] || is_rail_x_minus_y[0] || is_rail_x_plus_y[0];
is_rail_x_all[1]=is_rail_x[1] || is_rail_x_minus_y[1] || is_rail_x_plus_y[1];
is_rail_z_all[0]=is_rail_z[0] || is_rail_z_minus_y[0] || is_rail_z_plus_y[0];
is_rail_z_all[1]=is_rail_z[1] || is_rail_z_minus_y[1] || is_rail_z_plus_y[1];
u8 index = 0;
for (s8 y0 = -1; y0 <= 1; y0++) {
// Prevent from indexing never used coordinates
for (s8 xz = -1; xz <= 1; xz++) {
if (xz == 0)
continue;
MapNode n_xy = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x + xz, y + y0, z));
MapNode n_zy = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x, y + y0, z + xz));
ContentFeatures def_xy = nodedef->get(n_xy);
ContentFeatures def_zy = nodedef->get(n_zy);

// Check if current node would connect with the rail
is_rail_x[index] = ((def_xy.drawtype == NDT_RAILLIKE
&& ((ItemGroupList) def_xy.groups)[groupname] == self_group)
|| n_xy.getContent() == thiscontent);

is_rail_z[index] = ((def_zy.drawtype == NDT_RAILLIKE
&& ((ItemGroupList) def_zy.groups)[groupname] == self_group)
|| n_zy.getContent() == thiscontent);
index++;
}
}

bool is_rail_x_all[2]; // [0] = negative x, [1] = positive x coordinate from the current node position
bool is_rail_z_all[2];
is_rail_x_all[0] = is_rail_x[0] || is_rail_x[2] || is_rail_x[4];
is_rail_x_all[1] = is_rail_x[1] || is_rail_x[3] || is_rail_x[5];
is_rail_z_all[0] = is_rail_z[0] || is_rail_z[2] || is_rail_z[4];
is_rail_z_all[1] = is_rail_z[1] || is_rail_z[3] || is_rail_z[5];

// reasonable default, flat straight unrotated rail
bool is_straight = true;
Expand All @@ -1497,58 +1442,55 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
u8 tileindex = 0;

// check for sloped rail
if (is_rail_x_plus_y[0] || is_rail_x_plus_y[1] || is_rail_z_plus_y[0] || is_rail_z_plus_y[1])
{
adjacencies = 5; //5 means sloped
if (is_rail_x[4] || is_rail_x[5] || is_rail_z[4] || is_rail_z[5]) {
adjacencies = 5; // 5 means sloped
is_straight = true; // sloped is always straight
}
else
{
} else {
// is really straight, rails on both sides
is_straight = (is_rail_x_all[0] && is_rail_x_all[1]) || (is_rail_z_all[0] && is_rail_z_all[1]);
adjacencies = is_rail_x_all[0] + is_rail_x_all[1] + is_rail_z_all[0] + is_rail_z_all[1];
}

switch (adjacencies) {
case 1:
if(is_rail_x_all[0] || is_rail_x_all[1])
if (is_rail_x_all[0] || is_rail_x_all[1])
angle = 90;
break;
case 2:
if(!is_straight)
if (!is_straight)
tileindex = 1; // curved
if(is_rail_x_all[0] && is_rail_x_all[1])
if (is_rail_x_all[0] && is_rail_x_all[1])
angle = 90;
if(is_rail_z_all[0] && is_rail_z_all[1]){
if (is_rail_z_plus_y[0])
if (is_rail_z_all[0] && is_rail_z_all[1]) {
if (is_rail_z[4])
angle = 180;
}
else if(is_rail_x_all[0] && is_rail_z_all[0])
else if (is_rail_x_all[0] && is_rail_z_all[0])
angle = 270;
else if(is_rail_x_all[0] && is_rail_z_all[1])
else if (is_rail_x_all[0] && is_rail_z_all[1])
angle = 180;
else if(is_rail_x_all[1] && is_rail_z_all[1])
else if (is_rail_x_all[1] && is_rail_z_all[1])
angle = 90;
break;
case 3:
// here is where the potential to 'switch' a junction is, but not implemented at present
tileindex = 2; // t-junction
if(!is_rail_x_all[1])
angle=180;
angle = 180;
if(!is_rail_z_all[0])
angle=90;
angle = 90;
if(!is_rail_z_all[1])
angle=270;
angle = 270;
break;
case 4:
tileindex = 3; // crossing
break;
case 5: //sloped
if(is_rail_z_plus_y[0])
if (is_rail_z[4])
angle = 180;
if(is_rail_x_plus_y[0])
if (is_rail_x[4])
angle = 90;
if(is_rail_x_plus_y[1])
if (is_rail_x[5])
angle = -90;
break;
default:
Expand All @@ -1566,7 +1508,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
float s = BS/2;

short g = -1;
if (is_rail_x_plus_y[0] || is_rail_x_plus_y[1] || is_rail_z_plus_y[0] || is_rail_z_plus_y[1])
if (is_rail_x[4] || is_rail_x[5] || is_rail_z[4] || is_rail_z[5])
g = 1; //Object is at a slope

video::S3DVertex vertices[4] =
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