95 lines
3.3 KiB
C#
95 lines
3.3 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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public class MapBuildPlacer : MonoBehaviour
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{
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[HideInInspector] public GameObject startPositionObject; // 坐标起始点
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[HideInInspector] public float cellSize = 2; // 单元格大小
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[HideInInspector] public Camera mainCamera;
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[HideInInspector] public MapListener mapListener;
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[Tooltip("可建造格子的图层")] public LayerMask buildableCellLayer;
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private Color sprite_render_color;
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private SpriteRenderer sprite_render_children;
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private MapBuildableCell snap_grid;
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private bool is_trigger_with_has_build = false;
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private bool isSnap = false;
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private GameObject render_container;
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private void Start()
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{
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render_container = transform.Find("RenderContainer").gameObject;
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sprite_render_children = transform.Find("RenderContainer/RoomSpriteRender").GetComponent<SpriteRenderer>();
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sprite_render_color = sprite_render_children.color;
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}
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private void Update()
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{
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render_container.SetActive(isSnap); // 设置吸附状态的响应
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self_move_with_mouse_with_ray();
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}
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// 跟随鼠标移动使用射线检测
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private void self_move_with_mouse_with_ray()
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{
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Vector3 mouse_world_position = mainCamera.ScreenToWorldPoint(Input.mousePosition);
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mouse_world_position.z = 0;
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RaycastHit2D hit = Physics2D.Raycast(
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origin: mouse_world_position,
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direction: Vector2.zero,
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distance: 0.1f,
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layerMask: buildableCellLayer);
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if (hit.collider)
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{
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// 射线检测到格子, 吸附到格子坐标
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snap_grid = hit.collider.GetComponent<MapBuildableCell>();
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Vector3 snap_grid_position = startPositionObject.transform.position +
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snap_grid.m_recv_get_grid_position_with_vector3() * cellSize;
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transform.position = snap_grid_position;
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isSnap = true;
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if (is_trigger_with_has_build)
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{
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sprite_render_children.color = new Color32(166, 73, 73, 215); // 更改sr为不可建造的颜色
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}
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else
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{
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// 没有与已存在的建筑物接触
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sprite_render_children.color = sprite_render_color; // 还原初始颜色
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}
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}
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else
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{
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// 射线没有检测到格子, 自由移动
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sprite_render_children.color = new Color32(166, 73, 73, 215); // 更改sr为不可建造的颜色
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transform.position = mouse_world_position;
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isSnap = false;
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}
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}
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public bool m_recv_placer_is_snap_to_grid() => isSnap;
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public bool m_recv_is_trigger_with_has_build() => is_trigger_with_has_build;
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private void self_on_trigger_event(Collider2D other, bool status)
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{
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// 检测是否与某个图层的碰撞器相交
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if (other.gameObject.layer == LayerMask.NameToLayer("AlreadyBuild"))
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{
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is_trigger_with_has_build = status;
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}
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}
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private void OnTriggerStay2D(Collider2D other)
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{
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self_on_trigger_event(other, true);
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}
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private void OnTriggerExit2D(Collider2D other)
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{
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self_on_trigger_event(other, false);
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}
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} |