Unity 與 Blender 技能專屬書: 4月 2016

2016年4月29日星期五

Shader 製作動態環繞圓輪

首先感謝王巍網站詳細講解:

https://onevcat.com/2013/07/shader-tutorial-1/
----------------------------------------
Shader "Shader Forge/Diffuse" {
Properties {
_MinColor ("MinColor", Color) = (1,0,0,1)
_MaxColor ("MaxColor", Color) = (0,1,0.006896496,1)
_Health ("Health", Range(0, 1)) = 0
[HideInInspector]_Cutoff ("Alpha cutoff", Range(0,1)) = 0.5
}
SubShader {
Tags {
"Queue"="AlphaTest"
"RenderType"="TransparentCutout"
}
Pass {
Name "FORWARD"
Tags {
"LightMode"="ForwardBase"
}


CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#define UNITY_PASS_FORWARDBASE
#include "UnityCG.cginc"
#pragma multi_compile_fwdbase_fullshadows
#pragma exclude_renderers gles3 metal d3d11_9x xbox360 xboxone ps3 ps4 psp2
#pragma target 3.0
uniform float4 _MinColor;
uniform float4 _MaxColor;
uniform float _Health;
struct VertexInput {
float4 vertex : POSITION;
float2 texcoord0 : TEXCOORD0;
};
struct VertexOutput {
float4 pos : SV_POSITION;
float2 uv0 : TEXCOORD0;
};
VertexOutput vert (VertexInput v) {
VertexOutput o = (VertexOutput)0;
o.uv0 = v.texcoord0;
o.pos = mul(UNITY_MATRIX_MVP, v.vertex );
return o;
}
float4 frag(VertexOutput i) : COLOR {
float2 node_7657 = (i.uv0*2.0+-1.0);
float2 node_6660 = node_7657.rg;
float node_9531 = ((atan2(node_6660.g,node_6660.r)/6.28318530718)+0.5);
float node_6063 = length(node_7657);
float node_5128 = floor((0.3+node_6063));
float node_459 = ((1.0 - ceil(((1.0 - node_9531)-_Health)))*node_5128*(1.0 - floor(node_6063)));
clip(node_459 - 0.5);
////// Lighting:
////// Emissive:
float3 node_8440 = lerp(_MinColor.rgb,_MaxColor.rgb,_Health);
float3 emissive = node_8440;
float3 finalColor = emissive;
return fixed4(finalColor,1);
}
ENDCG
}
Pass {
Name "ShadowCaster"
Tags {
"LightMode"="ShadowCaster"
}
Offset 1, 1

CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#define UNITY_PASS_SHADOWCASTER
#include "UnityCG.cginc"
#include "Lighting.cginc"
#pragma fragmentoption ARB_precision_hint_fastest
#pragma multi_compile_shadowcaster
#pragma exclude_renderers gles3 metal d3d11_9x xbox360 xboxone ps3 ps4 psp2
#pragma target 3.0
uniform float _Health;
struct VertexInput {
float4 vertex : POSITION;
float2 texcoord0 : TEXCOORD0;
};
struct VertexOutput {
V2F_SHADOW_CASTER;
float2 uv0 : TEXCOORD1;
};
VertexOutput vert (VertexInput v) {
VertexOutput o = (VertexOutput)0;
o.uv0 = v.texcoord0;
o.pos = mul(UNITY_MATRIX_MVP, v.vertex );
TRANSFER_SHADOW_CASTER(o)
return o;
}
float4 frag(VertexOutput i) : COLOR {
float2 node_7657 = (i.uv0*2.0+-1.0);
float2 node_6660 = node_7657.rg;
float node_9531 = ((atan2(node_6660.g,node_6660.r)/6.28318530718)+0.5);
float node_6063 = length(node_7657);
float node_5128 = floor((0.3+node_6063));
float node_459 = ((1.0 - ceil(((1.0 - node_9531)-_Health)))*node_5128*(1.0 - floor(node_6063)));
clip(node_459 - 0.5);
SHADOW_CASTER_FRAGMENT(i)
}
ENDCG
}
}
FallBack "Diffuse"
CustomEditor "ShaderForgeMaterialInspector"
}

------------------------------------------------------
結果圖:

2016年4月5日星期二

Unity C# 按鈕開啟檔案(text)

使用別人寫好的軟體，有請讀我的按鈕，點擊後會自動開啟請讀我文字檔案的內容呈現。
空閒的時間試寫了簡單的程式。

※ 最主要注意的地方是:
Application.dataPath 路徑是指的應用程式目前的路徑。
如果使用者發佈，要特別注意就是路徑上的問題。

※ 以範例程式來說明:
發佈以下程式，執行結果是會出錯的，因為他讀不到檔案路徑。
發佈前，要把呼叫的文字檔案請放在(發佈檔案名稱_data) 位置。

範例程式:

using UnityEngine;
using System.Diagnostics;

public class ThreadTest : MonoBehaviour {
void OnGUI() {
// 請讀我按鈕
if (GUI.Button(new Rect(Screen.width / Screen.width * 500, Screen.height / Screen.height * 50, 100, 30), "請讀我"))
// 路徑要注意
getStartImportText(Application.dataPath + "/ReadMe.txt");
}

//讀取路徑
public void getStartImportText(string path)
{
Process.Start(path);
}
}

--------------------

結果圖:

Unity C# 使用者輸入錯誤 (整數)

using UnityEngine;
using System.Collections;
using System;
using System.Windows.Forms;

public class ThreadTest : MonoBehaviour {

    string x = "";  // 數入字串

    // 整數判斷
    bool setNumber() {

        int numX;  // 整數

        bool intSw = Int32.TryParse(x, out numX);

        return intSw;
    }

    void OnGUI() {

        inputNumber();
        if (GUI.Button(new Rect(UnityEngine.Screen.width/UnityEngine.Screen.width, UnityEngine.Screen.height/UnityEngine.Screen.height * 50, 100 , 30),"確定")) {
            if (x.Equals(""))
                MessageBox.Show("不能空白");
            else {
                if (setNumber().Equals(true)) MessageBox.Show("正確");
                else MessageBox.Show("只能輸入整數");
            }
        }
    }

    // GUILayout
    void inputNumber() {
        GUILayout.BeginArea(new Rect(UnityEngine.Screen.width/ UnityEngine.Screen.width, UnityEngine.Screen.height/ UnityEngine.Screen.height, 100, 50));
        GUILayout.BeginHorizontal();
        x = GUILayout.TextField(x, 100);
        GUILayout.EndHorizontal();
        GUILayout.EndArea();
    }
}

--------------------------------

執行結果:

空白結果

輸入錯誤

輸入正確

Unity C# 取得滑鼠座標(螢幕座標，非遊戲裡面座標)

取得桌面滑鼠座標，非Unity 發佈後遊戲座標。
請記得 using System.Drawing，如果開發者沒有這個類別。
請自行下載System.Drawing dll 檔案。
System.Drawing dll 下載
------------------------------------------

/*********************************************************************************
* 模擬滑鼠 user32
* 參考文獻 : http://pinvoke.net/default.aspx/user32.mouse_event
https://msdn.microsoft.com/zh-tw/library/windows/desktop/ms646260(v=vs.85).aspx
********************************************************************************/

using UnityEngine;
using System.Collections;
using System.Threading;
using System.Drawing;
using System.Runtime.InteropServices;

class MouserClass {

[DllImport("user32")]
static extern bool GetCursorPos(ref Point getPoint);//取得滑鼠座標

private Point getPoint;

private bool getViewSw;

// 取得滑鼠開關
public bool getViewSwmassage(bool getViewSw)
{
return this.getViewSw = getViewSw;
}

//取得當前滑鼠偵測座標
public string getMosuPointSwMessage()
{
string mosuPointSwMessage = (getViewSw.Equals(true)) ? "正在偵測" : "取消偵測";
return mosuPointSwMessage;
}

//取得當前滑鼠座標
public void GetmouserPostatic()
{
while (getViewSw.Equals(true))
{
GetCursorPos(ref getPoint);

}
Thread.Sleep(1000);
}

//取得滑鼠座標
public string getMousePosistionMessage()
{
return getPoint.ToString();
}

// 終止所有執行緒
public void Stop()
{
getViewSw = false;
}
}

public class ThreadTest : MonoBehaviour {

MouserClass mouserClass;
GUIStyle guistyle;

Thread GetmousePointTime;
public bool getMousePosistionSw = true;

void Start() {
mouserClass = new MouserClass();
guistyle = new GUIStyle();
}

void Update() {

if (getMousePosistionSw.Equals(true))
{
// 取得當前滑鼠
GetmousePointTime = new Thread(mouserClass.GetmouserPostatic);
GetmousePointTime.Start();
}

mouserClass.getViewSwmassage(getMousePosistionSw);
}

void OnGUI() {

guistyle.fontSize = 30;
guistyle.normal.textColor = UnityEngine.Color.white;

// 讀取執行緒當前滑鼠座標
if (GUI.Button(new Rect(Screen.width / Screen.width * 5, Screen.height / Screen.height * 50, 100, 30), "當前滑鼠座標"))
getMousePosistionSw = !getMousePosistionSw;
GUI.Label(new Rect(Screen.width / Screen.width * 110, Screen.height / Screen.height * 50, 50, 20), mouserClass.getMosuPointSwMessage(), guistyle);
GUI.Label(new Rect(Screen.width / Screen.width * 230, Screen.height / Screen.height * 50, 50, 20), mouserClass.getMousePosistionMessage(), guistyle);
}

// 關掉軟體
void OnApplicationQuit()
{
mouserClass.Stop();
}
}

---------------------------------------------------

執行結果:

Unity C# 執行緒使用方法(Thread)

Thread (執行緒) 語法:

using System.Threading; // 匯入 Thread 類別

Thread 變數名稱 = new Thread(執行緒執行方法);
變數名稱.Start();

void 執行續方法() {
while (執行續開關) {
//執行緒執行動作 ........
}
執行緒.Sleep(1000);
}

C# 以下範例程式:
執行緒注意地方紅色標記。

using UnityEngine;
using System.Collections;
using System.Threading;

public class A {

bool sw; // Thread sw (執行緒開關)

// 給值開關
public bool setSw(bool sw) {
return this.sw = sw;
}

// 取值開關
public bool getSw() {
return this.sw;
}

// A Class Thread Message (A類別執行緒執行)
public void Message() {

while (sw.Equals(true)){
Debug.Log("這是A類別執行緒");
}
Thread.Sleep(1000); // 暫停一秒
}

// close Applicaction Thread close (關掉應用程式執行緒關掉)
public void Stop() {
sw = false;
}
}

public class ThreadTest : MonoBehaviour {

Thread test1, test2; // Thread declare (執行緒宣告)
A a = new A(); // A class declare (A類別宣告)

public bool testSw = false; // Thread Sw (執行續開關)

void Update() {

if (a.setSw(testSw).Equals(true)) {

test1 = new Thread(a.Message);
test1.Start();

test2 = new Thread(Message);
test2.Start();
}
}

// close Applicaction (關掉應用程式)
void OnApplicationQuit() {
a.Stop();
}

// ThreadTest class Thread Message (ThreadTest 類別執行緒)
void Message() {

while (a.getSw().Equals(true)){
Debug.Log("這是本類別執行緒");
}
Thread.Sleep(1000); // 暫停一秒
}
}

-----------------------------------------------

執行結果 :

2016年4月29日 星期五