Initial v2 water map format.

zone/water_map_v1.cpp

@@ -0,0 +1,82 @@
+#include "water_map_v1.h"
+
+WaterMapV1::WaterMapV1() {
+	BSP_Root = nullptr;
+}
+
+WaterMapV1::~WaterMapV1() {
+	if (BSP_Root) {
+		delete[] BSP_Root;
+	}
+}
+
+WaterRegionType WaterMapV1::ReturnRegionType(float y, float x, float z) const {
+	return BSPReturnRegionType(1, y, x, z);
+}
+
+bool WaterMapV1::InWater(float y, float x, float z) const {
+	return ReturnRegionType(y, x, z) == RegionTypeWater;
+}
+
+bool WaterMapV1::InVWater(float y, float x, float z) const {
+	return ReturnRegionType(y, x, z) == RegionTypeVWater;
+}
+
+bool WaterMapV1::InLava(float y, float x, float z) const {
+	return ReturnRegionType(y, x, z) == RegionTypeLava;
+}
+
+bool WaterMapV1::InLiquid(float y, float x, float z) const {
+	return InWater(y, x, z) || InLava(y, x, z);
+}
+
+bool WaterMapV1::Load(FILE *fp) {
+	uint32 bsp_tree_size;
+	if (fread(&bsp_tree_size, sizeof(bsp_tree_size), 1, fp) != 1) {
+		return false;
+	}
+
+	BSP_Root = new ZBSP_Node[bsp_tree_size];
+	if (!BSP_Root) {
+		return false;
+	}
+
+	if (fread(BSP_Root, sizeof(ZBSP_Node), bsp_tree_size, fp) != bsp_tree_size) {
+		return false;
+	}
+
+	return true;
+}
+
+WaterRegionType WaterMapV1::BSPReturnRegionType(int32 node_number, float y, float x, float z) const {
+	float distance;
+
+	const ZBSP_Node *current_node = &BSP_Root[node_number - 1];
+
+	if ((current_node->left == 0) &&
+		(current_node->right == 0)) {
+		return (WaterRegionType)current_node->special;
+	}
+
+	distance = (x * current_node->normal[0]) +
+		(y * current_node->normal[1]) +
+		(z * current_node->normal[2]) +
+		current_node->splitdistance;
+
+	if (distance == 0.0f) {
+		return(RegionTypeNormal);
+	}
+
+	if (distance >0.0f) {
+		if (current_node->left == 0) {
+			return(RegionTypeNormal);
+		}
+		return BSPReturnRegionType(current_node->left, y, x, z);
+	}
+
+	if (current_node->right == 0) {
+		return(RegionTypeNormal);
+	}
+
+	return BSPReturnRegionType(current_node->right, y, x, z);
+}