BITFALL/Assets/Plugins/FImpossible Creations/Plugins - Level Design/PGG/Rules Logics/PostEvents/SR_CutTerrainHole.cs

111 lines
4.2 KiB
C#

using UnityEngine;
using System;
#if UNITY_EDITOR
using UnityEditor;
#endif
namespace FIMSpace.Generating.Rules.PostEvents
{
public class SR_CutTerrainHole : SpawnRuleBase, ISpawnProcedureType
{
public override string TitleName() { return "Cut Terrain Hole"; }
public override string Tooltip() { return "Detect Unity Terrain below spawned object and cut terrain hole" + base.Tooltip(); }
public EProcedureType Type { get { return EProcedureType.Event; } }
//[Header("Detecting Terrain Object")]
//public LayerMask GroundRaycastMask = 1 << 0;
//[Tooltip("Most cases it will be 0,-1,0 so straight down")]
//public Vector3 RaycastDirection = Vector3.down;
//[Tooltip("How far collision raycast can go")]
//public float RaycastLength = 7f;
//[Tooltip("Casting ray from upper or lower position of the object")]
//public Vector3 OffsetRaycastOrigin = Vector3.up;
[Header("Size of the cutted hole")]
public float TerrainHoleRadius = 0f;
public bool Square = false;
//[Space(6)]
//[Tooltip("If you don't want to cut terrain hole during edit mode")]
//public bool ExecuteOnlyInPlaymode = true;
#region There you can do custom modifications for inspector view
#if UNITY_EDITOR
public override void NodeBody(SerializedObject so)
{
EditorGUILayout.HelpBox("Beware, you will be most likely NOT ABLE to UNDO modified terrain holes! You will need to restore them manually if you need to.", MessageType.None);
base.NodeBody(so);
}
#endif
#endregion
public override void CellInfluence(FieldSetup preset, FieldModification mod, FieldCell cell, ref SpawnData spawn, FGenGraph<FieldCell, FGenPoint> grid, Vector3? restrictDirection = null)
{
base.CellInfluence(preset, mod, cell, ref spawn, grid);
Action<GameObject> flattenTerrain =
(o) =>
{
DetectTerrainAndCutHole(o, SR_RemoveTerrainTrees.GetTerrainIn(o.transform.position), TerrainHoleRadius, Square);
};
spawn.OnGeneratedEvents.Add(flattenTerrain);
}
public static Vector3 WorldPosToTerrainNormalizedPos(Vector3 wPos, Terrain terr)
{
if (terr)
{
Vector3 onTerrain = ((wPos) - terr.gameObject.transform.position);
Vector3 terrLocalPos;
terrLocalPos.x = onTerrain.x / terr.terrainData.size.x;
terrLocalPos.y = onTerrain.y / terr.terrainData.size.y;
terrLocalPos.z = onTerrain.z / terr.terrainData.size.z;
wPos = terrLocalPos;
}
return wPos;
}
public static bool[,] DetectTerrainAndCutHole(GameObject o, Terrain terr, float size, bool square)
{
bool[,] holes = null;
if (terr)
{
Vector3 terrLocalPos = WorldPosToTerrainNormalizedPos(o.transform.position, terr);
int tScale = terr.terrainData.holesResolution;
int posXInTerrain = (int)(terrLocalPos.x * tScale);
int posYInTerrain = (int)(terrLocalPos.z * tScale);
holes = terr.terrainData.GetHoles(0, 0, tScale, tScale);
bool[,] newHoles = terr.terrainData.GetHoles(0, 0, tScale, tScale);
int radiusInSamples = Mathf.CeilToInt((size * tScale) / terr.terrainData.size.x);
for (int x = -radiusInSamples; x <= radiusInSamples; x++)
for (int z = -radiusInSamples; z <= radiusInSamples; z++)
{
int tZ = posXInTerrain + x;
int tX = posYInTerrain + z;
if (tX < 0 || tZ < 0 || tX >= newHoles.GetLength(0) || tZ >= newHoles.GetLength(1)) continue;
if (!square) if (Vector2.Distance(Vector2.zero, new Vector2(x, z)) > radiusInSamples) continue;
newHoles[tX, tZ] = false;
}
terr.terrainData.SetHoles(0, 0, newHoles);
}
return holes;
}
}
}