Fix broken perspective.

src/debugsprite.cpp

@@ -65,9 +65,9 @@ void DebugSprite::TickDraw(float deltams)
     int z = data->z;
 
     data->game->GetScene()->AddTile((data->tiler << 16) | 31,
-                                    x - 16, y, z + 32, 1);
-    data->game->GetScene()->AddTile((data->tiler << 16) | 15,
                                     x - 16, y, z, 1);
+    data->game->GetScene()->AddTile((data->tiler << 16) | 15,
+                                    x - 16, y, z + 32, 1);
 }
 
 DebugSprite::~DebugSprite()

src/layer.cpp

@@ -41,7 +41,7 @@ void Layer::Render(Scene *scene, int x, int y, int z)
         for (int i = 0; i < width; i++)
             if (data[j * width + i])
                 scene->AddTile(data[j * width + i],
-                               x + i * 32, y + j * 32 + altitude,
+                               x + i * 32, y + j * 32 - altitude,
                                altitude + z, orientation);
 }
 

src/tileset.cpp

@@ -129,14 +129,14 @@ void TileSet::BlitTile(uint32_t id, int x, int y, int z, int o)
     {
         glBindTexture(GL_TEXTURE_2D, data->texture);
         glBegin(GL_QUADS);
-            glTexCoord2f(tx, ty + data->ty);
-            glVertex3f(x, sqrt2 * (y - 70 + off), sqrt2 * (z + off));
-            glTexCoord2f(tx + data->tx, ty + data->ty);
-            glVertex3f(x + 32, sqrt2 * (y - 70 + off), sqrt2 * (z + off));
-            glTexCoord2f(tx + data->tx, ty);
-            glVertex3f(x + 32, sqrt2 * (y - 38), sqrt2 * z);
             glTexCoord2f(tx, ty);
-            glVertex3f(x, sqrt2 * (y - 38), sqrt2 * z);
+            glVertex3f(x, sqrt2 * (y - 38 - off), sqrt2 * (z + off));
+            glTexCoord2f(tx + data->tx, ty);
+            glVertex3f(x + 32, sqrt2 * (y - 38 - off), sqrt2 * (z + off));
+            glTexCoord2f(tx + data->tx, ty + data->ty);
+            glVertex3f(x + 32, sqrt2 * (y - 70), sqrt2 * z);
+            glTexCoord2f(tx, ty + data->ty);
+            glVertex3f(x, sqrt2 * (y - 70), sqrt2 * z);
         glEnd();
     }
 }