Added a NoFluids render mode primitive, and documented it.

overviewer_core/src/primitives/no-fluids.c

@@ -0,0 +1,44 @@
+/* 
+ * This file is part of the Minecraft Overviewer.
+ *
+ * Minecraft Overviewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Minecraft Overviewer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
+ * Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with the Overviewer.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "../overviewer.h"
+
+typedef struct {
+} PrimitiveNoFluids;
+
+static int
+no_fluids_start(void *data, RenderState *state, PyObject *support) {
+    PrimitiveNoFluids *self = (PrimitiveNoFluids *)data;
+        
+    return 0;
+}
+
+static int
+no_fluids_hidden(void *data, RenderState *state, int x, int y, int z) {
+    PrimitiveNoFluids *self = (PrimitiveNoFluids *)data;
+    
+    return !block_has_property(state->block, FLUID);
+}
+
+RenderPrimitiveInterface primitive_no_fluids = {
+    "no-fluids", sizeof(PrimitiveNoFluids),
+    no_fluids_start,
+    NULL,
+    NULL,
+    no_fluids_hidden,
+    NULL,
+};