Cheese Trap
2019 年 1 月—2019 年 2 月｜Game Jam 项目
关于
Cheese Trap 是一款本地双人对战游戏，两名玩家扮演老鼠展开竞争。玩家可以啃食地面制造洞穴；当对手掉进洞里时，你就获胜。
时间结束时，吞食地面最多的玩家获胜。
我的贡献
- 与另一名程序员共同实现了大部分玩法功能
- 开发了地图纹理与洞穴纹理的制作流程
- 实现了多种 Shader，在原始地图上呈现挖洞效果
- 为 UI 系统实现了多种动画
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class HoleManager : MonoBehaviour
{
const int texWidth = 960;
const int texHeight = 540;
public List holes;
public int[] areas;
public GameObject holeColliderPrefab;
// playerNum should be fetched from GameManager later
private int playerNum = 2;
// holeTexture has the size 960x540
// holeTexture is used to calculate holes and masks
private Texture2D holeTexture;
private Texture2D terrainTexture;
public int gameLevel;
private int[,] caramelCoolDown = new int[960,540];
private Texture2D originalHoleTexture;
// only for debug
// private GameObject testTextureDisplay;
// SpriteRenderer sr;
// Start is called before the first frame update
public void InitializeLevel(int level)
{
holes = new List();
caramelCoolDown = new int[960, 540];
areas = new int[playerNum + 1];
LoadLevelTerrainTexture(level);
InitializeHoleTexture();
}
// Update is called once per frame
void Update()
{
}
// judge current status of the player on the terrain
// -1 -> die
// 0 -> normal
// 1 -> ice / cream e.t.c
public int getTerrainStatus(Vector2 position){
position.x *= 50;
position.y *= 50;
if ((holeTexture.GetPixel((int)position.x, (int)position.y).r != 0 && holeTexture.GetPixel((int)position.x, (int)position.y).r != 1) ||
holeTexture.GetPixel((int)position.x, (int)position.y).g == 1)
return -1;
return (int)Mathf.Round(holeTexture.GetPixel((int)position.x, (int)position.y).g * 255);
}
public Texture2D GetHoleTexture(){
return holeTexture;
}
private void InitializeHoleTexture(){
holeTexture = new Texture2D(texWidth, texHeight);
Color[] colors = terrainTexture.GetPixels();
// for (int i=0; i();
// Sprite pic = Sprite.Create(holeTexture, new Rect(0, 0, texWidth, texHeight), new Vector2(0.5f,0.5f));
// sr.sprite = pic;
}
void InitializeTerrainTexture(){
terrainTexture= new Texture2D(texWidth, texHeight);
Color[] colors = new Color[texWidth*texHeight];
for (int i=0; i texWidth)
Right = texWidth - 1;
if (Bottom < 0)
Bottom = 0;
if (Top > texHeight)
Top = texHeight - 1;
int colorIndex = 0;
for (int x = Left; x <= Right; x++){
for (int y = Bottom; y <= Top; y++){
if ((x - position.x)*(x - position.x) + (y - position.y)*(y - position.y) <= radius*radius && holeTexture.GetPixel(x, y).r == 0
&& holeTexture.GetPixel(x, y).r != 1){
holeTexture.SetPixel(x, y, new Color32((byte)playerID, 0, 0, 255));
areas[playerID]++;
}
colorIndex++;
}
}
holeTexture.Apply();
DisplayHoleTexture();
}
public void GenerateCaramelAtPoint(Vector2 position, int radius){
int cx = (int) position.x;
int cy = (int) position.y;
for (int x = cx - radius; x <= cx + radius; x++){
for (int y = cy - radius; y <= cy + radius; y++){
if (x >= 0 && x < texWidth && y >= 0 && y < texHeight && (x-cx)*(x-cx) + (y-cy)*(y-cy) <= radius * radius &&
holeTexture.GetPixel(x,y).r == 0 && holeTexture.GetPixel(x,y).g != 1){
StartCoroutine(SetCaramel(x, y));
}
}
}
holeTexture.Apply();
}
IEnumerator SetCaramel(int x, int y){
caramelCoolDown[x,y] += 1;
Color c = holeTexture.GetPixel(x, y);
Color originalColor = c;
holeTexture.SetPixel(x, y, new Color(c.r, 3.0f/255, c.b, c.a));
yield return new WaitForSeconds(1.5f);
if (caramelCoolDown[x,y] == 1)
holeTexture.SetPixel(x, y, originalHoleTexture.GetPixel(x, y));
caramelCoolDown[x,y] -= 1;
yield return null;
}
public void DisplayHoleTexture(){
GameObject map = GameObject.Find("ForeGround");
map.GetComponent().material.SetTexture("_Mask", holeTexture);
GameObject shadow = GameObject.Find("HoleShadow");
shadow.GetComponent().material.SetTexture("_Mask", holeTexture);
}
}
HoleManager
该 洞穴管理器 用于在玩家挖洞、改变地图定义时实时创建并更新地图。地图尺寸为 960×540，该脚本能够以 60 FPS 运行。
FlowAndSpinEffect
Flow and Spin Effect 是一种 UI 特效 Shader，用于在 UI 圆盘上呈现潮汐流动效果。
Shader "Custom/FlowAndSpinEffect"
{
Properties
{
_MainTex ("Sprite Texture", 2D) = "white" {}
_FlowTex ("Base (RGB)", 2D) = "white" {}
_ScrollXSpeed("XSpeed", Range(-10, 10)) = -3
_RotateSpeed("RotateSpeed", Range(-10, 10)) = 0.5
_FadeAlpha("Alpha", Range(0, 1)) = 1
}
SubShader
{
// No culling or depth
Cull Off ZWrite Off ZTest Always
Blend SrcAlpha OneMinusSrcAlpha
Pass
{
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#include "UnityCG.cginc"
struct appdata
{
float4 vertex : POSITION;
float2 uv : TEXCOORD0;
};
struct v2f
{
float2 uv : TEXCOORD0;
float4 vertex : SV_POSITION;
};
v2f vert (appdata v)
{
v2f o;
o.vertex = UnityObjectToClipPos(v.vertex);
o.uv = v.uv;
return o;
}
sampler2D _MainTex;
sampler2D _FlowTex;
fixed _ScrollXSpeed;
fixed _RotateSpeed;
fixed _FadeAlpha;
fixed4 frag (v2f i) : SV_Target
{
fixed xScrollValue = _ScrollXSpeed * _Time.y;
fixed theta = _RotateSpeed * _Time.y;
fixed2 pos = i.uv-fixed2(0.5, 0.5);
fixed4 col = tex2D(_MainTex, fixed2(pos.x*cos(theta) - pos.y*sin(theta), pos.x*sin(theta) + pos.y*cos(theta)) + fixed2(0.5, 0.5));
fixed4 flowcol = tex2D(_FlowTex, i.uv + fixed2(xScrollValue, 0));
if ((i.uv.x-0.5) * (i.uv.x-0.5) + (i.uv.y-0.5) * (i.uv.y-0.5) > 0.25)
col.a = 0;
if (col.r == 0 && col.g == 0 && col.b == 0)
col.a = 0;
col.rgb = min(col.rgb + flowcol.rgb / 4, 1);
if (col.a == 1)
col.a = _FadeAlpha;
return col;
}
ENDCG
}
}
}
数据驱动地图
- 为了正确显示地图，关卡画面由四个图层构成。
- 背景层：提供静态背景信息。
- 前景层：提供原始前景信息，同时作为洞穴 Shader 的基础纹理。
- 阴影图：为洞穴 Shader 提供挖掘阴影所需的信息。
- 地形图：向游戏管理器提供玩家可通行区域与障碍物位置，也用于冰面地图以营造地面湿滑的感觉。
项目复盘
做得好的地方
- 与优秀的队友在一周内完成了一款出色的 Game Jam 游戏
- 学会了如何编写 Shader
- 实现了数据驱动的地图结构
需要改进的地方
- 团队中有一名程序员经验较少，在快速开发过程中一度跟不上进度
我的收获
- 与能力出色的开发者一起协作非常有趣
- 学会合理管理时间；有些日子我们曾通宵赶工以确保功能正常运行