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CollisionPlotter.cs
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CollisionPlotter.cs
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using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;
public class CollisionPlotter : EditorWindow
{
const string COLLIDER_PARENT = "Plotter_Collider";
const string COLLISION_PARENT = "Plotter_Collision";
public enum ColliderType
{
None,
BoxCollider,
EdgeCollider
}
[SerializeField]
bool isUse;
[SerializeField]
bool showAllCollision;
[SerializeField]
bool isUseSnap;
[SerializeField]
string colliderTag = "Untagged";
[SerializeField]
int colliderLayer;
[SerializeField]
ColliderType currentType;
[SerializeField]
int currentColliderTab;
[SerializeField]
string[] strAvailableCollider = new string[] { "None", "Box", "Edge" };
public static int pressCount = 0;
public static bool isTrigger;
public static bool isBeginPlot;
Vector3 beginPos;
Vector3 endPos;
[MenuItem("Custom/Plotter/CollisionPlotter")]
public static void ShowWindow()
{
EditorWindow.GetWindow(typeof(CollisionPlotter));
}
void OnEnable()
{
Tools.current = Tool.None;
SceneView.onSceneGUIDelegate += OnSceneGUI;
}
void OnDestroy()
{
SceneView.onSceneGUIDelegate -= OnSceneGUI;
}
void OnSceneGUI(SceneView sceneView)
{
if (isUse) {
_Scene_Input_Handler();
_Plot_Collider_Handler();
SceneView.lastActiveSceneView.Repaint();
}
}
void _Scene_Input_Handler()
{
var e = Event.current;
switch (e.type) {
case EventType.KeyDown:
if (e.keyCode == KeyCode.C) {
pressCount = 0;
isBeginPlot = !isBeginPlot;
Repaint();
}
else if (e.keyCode == KeyCode.S) {
isUseSnap = !isUseSnap;
Repaint();
}
if (isBeginPlot) {
if (e.keyCode == KeyCode.T) {
isTrigger = !isTrigger;
Repaint();
}
}
break;
}
var mousePos = e.mousePosition;
var sceneViewCamera = SceneView.lastActiveSceneView.camera;
mousePos.y = sceneViewCamera.pixelHeight - mousePos.y;
mousePos = sceneViewCamera.ScreenToWorldPoint(mousePos);
if (pressCount == 1) {
Handles.color = Color.white;
Handles.Label(mousePos + Vector2.up * 0.6f, (isBeginPlot) ? "[ Using Ploter ]" : "");
Handles.color = Color.yellow;
Handles.Label(mousePos + Vector2.up * 0.5f, (isUseSnap) ? "Snap : On" : "Snap : Off");
Handles.color = Color.red;
Handles.DrawLine(beginPos, mousePos);
}
if (e.control) {
pressCount = 0;
Tools.current = Tool.None;
Handles.color = Color.white;
Handles.Label(mousePos + Vector2.up * 0.6f, "[ Delete Mode ]");
Handles.color = Color.yellow;
Handles.DrawWireCube(mousePos, new Vector2(0.5f, 0.5f));
if (e.type == EventType.MouseDown && e.button == 0) {
_DeleteColliderHandler(mousePos);
var controlId = GUIUtility.GetControlID(FocusType.Passive);
GUIUtility.hotControl = controlId;
Event.current.Use();
}
}
}
void OnGUI()
{
_GUIHandler();
}
void _GUIHandler()
{
GUILayout.Label ("Setting", EditorStyles.boldLabel);
currentColliderTab = GUILayout.Toolbar(currentColliderTab, strAvailableCollider);
currentType = (ColliderType)currentColliderTab;
isUse = ColliderType.None != currentType;
isBeginPlot = isUse;
colliderTag = EditorGUILayout.TagField("Tag", colliderTag);
colliderLayer = EditorGUILayout.LayerField("Layer", colliderLayer);
_Always_Show_Collider_Handler();
isTrigger = EditorGUILayout.Toggle ("Use Trigger", isTrigger);
if (isBeginPlot) {
isUseSnap = EditorGUILayout.Toggle("Use Snap", isUseSnap);
}
}
void _Always_Show_Collider_Handler()
{
showAllCollision = EditorGUILayout.Toggle ("Always Show Collider", showAllCollision);
Physics2D.alwaysShowColliders = showAllCollision;
}
void _Plot_Collider_Handler()
{
if (isBeginPlot) {
switch (currentType) {
case ColliderType.BoxCollider:
_Plot_Box_Collider();
break;
case ColliderType.EdgeCollider:
_Plot_Edge_Collider();
break;
}
}
}
void _Plot_Box_Collider()
{
var e = Event.current;
switch (e.type) {
case EventType.MouseDown:
if (e.button != 0) {
if (e.button == 1) {
pressCount = 0;
}
return;
}
pressCount += 1;
if (pressCount == 1) {
var sceneViewCamera = SceneView.lastActiveSceneView.camera;
var mousePos = e.mousePosition;
mousePos.y = sceneViewCamera.pixelHeight - mousePos.y;
beginPos = sceneViewCamera.ScreenToWorldPoint(mousePos);
if (isUseSnap) {
beginPos = _Snap(1, beginPos);
}
}
else if (pressCount == 2) {
var sceneViewCamera = SceneView.lastActiveSceneView.camera;
var mousePos = e.mousePosition;
mousePos.y = sceneViewCamera.pixelHeight - mousePos.y;
endPos = sceneViewCamera.ScreenToWorldPoint(mousePos);
if (isUseSnap) {
endPos = _Snap(1, endPos);
}
_CreateBoxCollider2D(isTrigger, beginPos, endPos);
SceneView.RepaintAll();
pressCount = 0;
}
break;
}
}
void _Plot_Edge_Collider()
{
var e = Event.current;
switch (e.type) {
case EventType.MouseDown:
if (e.button != 0) {
if (e.button == 1) {
pressCount = 0;
}
return;
}
pressCount += 1;
if (pressCount == 1) {
var sceneViewCamera = SceneView.lastActiveSceneView.camera;
var mousePos = e.mousePosition;
mousePos.y = sceneViewCamera.pixelHeight - mousePos.y;
beginPos = sceneViewCamera.ScreenToWorldPoint(mousePos);
if (isUseSnap) {
beginPos = _Snap(1, beginPos);
}
}
else if (pressCount == 2) {
var sceneViewCamera = SceneView.lastActiveSceneView.camera;
var mousePos = e.mousePosition;
mousePos.y = sceneViewCamera.pixelHeight - mousePos.y;
endPos = sceneViewCamera.ScreenToWorldPoint(mousePos);
if (isUseSnap) {
endPos = _Snap(1, endPos);
}
_CreateEdgeCollider2D(isTrigger, beginPos, endPos);
SceneView.RepaintAll();
pressCount = 0;
}
break;
}
}
void _CreateBoxCollider2D(bool isTrigger, Vector3 beginPos, Vector3 endPos)
{
var objName = (isTrigger) ? (LayerMask.LayerToName(colliderLayer) + "_ground_collider") : (LayerMask.LayerToName(colliderLayer) + "_ground_collision");
var obj = new GameObject(objName);
var component = obj.AddComponent(typeof(BoxCollider2D)) as BoxCollider2D;
var relativePos = (endPos - beginPos);
var halfRelativePos = relativePos / 2.0f;
var expectPos = beginPos + halfRelativePos;
expectPos.z = 0.0f;
var expectSize = halfRelativePos;
obj.transform.position = expectPos;
obj.tag = colliderTag;
obj.layer = colliderLayer;
component.isTrigger = isTrigger;
component.size = new Vector2(Mathf.Abs(expectSize.x * 2.0f), Mathf.Abs(expectSize.y * 2.0f));
var parentObjName = (isTrigger) ? COLLIDER_PARENT : COLLISION_PARENT;
var parent = GameObject.Find(parentObjName);
if (!parent) {
parent = new GameObject(parentObjName);
parent.transform.position = Vector3.zero;
Undo.RegisterCreatedObjectUndo(parent, "Created parent of a new box collider 2D..");
}
obj.transform.SetParent(parent.transform);
Undo.RegisterCreatedObjectUndo(obj, "Created a new box collider 2D..");
}
void _CreateEdgeCollider2D(bool isTrigger, Vector3 beginPos, Vector3 endPos)
{
var objName = (isTrigger) ? (LayerMask.LayerToName(colliderLayer) + "_edge_collider") : (LayerMask.LayerToName(colliderLayer) + "_edge_collision");
var obj = new GameObject(objName);
var component = obj.AddComponent(typeof(EdgeCollider2D)) as EdgeCollider2D;
var relativePos = (endPos - beginPos);
var halfRelativePos = relativePos / 2.0f;
var expectPos = beginPos + halfRelativePos;
expectPos.z = 0.0f;
obj.tag = colliderTag;
obj.layer = colliderLayer;
component.isTrigger = isTrigger;
component.points = new Vector2[] {
beginPos,
endPos
};
var parentObjName = (isTrigger) ? COLLIDER_PARENT : COLLISION_PARENT;
var parent = GameObject.Find(parentObjName);
if (!parent) {
parent = new GameObject(parentObjName);
parent.transform.position = Vector3.zero;
Undo.RegisterCreatedObjectUndo(parent, "Created parent of a new edge collider 2D..");
}
obj.transform.SetParent(parent.transform);
Undo.RegisterCreatedObjectUndo(obj, "Created a new edge collider 2D..");
}
Vector3 _Snap(float value, Vector3 target)
{
var depth = 0;
var snapInverse = 1 / value;
var result = Vector3.zero;
result.x = Mathf.Round(target.x * value) / snapInverse;
result.y = Mathf.Round(target.y * value) / snapInverse;
result.z = depth;
return result;
}
void _DeleteColliderHandler(Vector3 origin)
{
var results = new Collider2D[1];
Physics2D.OverlapBoxNonAlloc(origin, new Vector2(0.5f, 0.5f), 0.0f, results);
if (results.Length <= 0) {
return;
}
if (results[0] != null) {
Undo.DestroyObjectImmediate(results[0].transform.gameObject);
}
}
}