游戏入门-推箱子（初级版)

拼搏现实的明天。 2022-10-13 15:55 143阅读 0赞

**上代码**

#include <iostream>
    using namespace std;
    
    const char gStateData[] = "\ ########\n\ # .. p #\n\ # oo #\n\ # #\n\ ########";
    
    const int gStateWidth = 8;
    const int gStateHeight = 5;
    
    enum Object
    { 
    	OBJ_SPACE,
    	OBJ_WALL,
    	OBJ_GOAL,
    	OBJ_BLOCK,
    	OBJ_BLOCK_ON_GOAL,
    	OBJ_MAN,
    	OBJ_MAN_ON_GOAL,
    
    	OBJ_UNKNOWN,
    };
    
    void initialize(Object* state, int width, int height, const char* stageData);
    void draw(const Object* state, int width, int height);
    void update(Object* state, char input, int width, int height);
    bool checkClear(const Object* state, int width, int height);
    
    int main()
    { 
    	// 使用一维数组存放状态数据
    	Object* state = new Object[gStateWidth * gStateHeight];
    
    	// 初始化
    	initialize(state, gStateWidth, gStateHeight, gStateData);
    
    	// 主循环
    	while (true)
    	{ 
    		// 首先绘制
    		draw(state, gStateWidth, gStateHeight);
    
    		// 通关检测
    		if (checkClear(state, gStateWidth, gStateHeight))
    			break;
    
    		// 提示如何操作
    		cout << "a:left s:right w:up z:down. command?" << endl;
    
    		char input;
    		cin >> input;
    
    		// 更新
    		update(state, input ,gStateWidth, gStateHeight);
    	}
    
    	// 通关祝贺信息
    	cout << "Contratulation's ! you won." << endl;
    
    	// 析构
    	delete[] state;
    	state = NULL;
    
    	// 阻止窗口闪退
    	system("pause");
    
    	return 0;
    }
    
    // 初始化函数，根据stateData填充
    void initialize(Object* state, int width, int height, const char* stageData)
    { 
    	const char* d = stageData;
    	int x = 0, y = 0;
    	while ((*d) != '\0')
    	{ 
    		Object t;
    		switch(*d)
    		{ 
    		case '#': t = OBJ_WALL; break;
    		case ' ': t = OBJ_SPACE; break;
    		case 'o': t = OBJ_BLOCK; break;
    		case 'O': t = OBJ_BLOCK_ON_GOAL; break;
    		case '.': t = OBJ_GOAL; break;
    		case 'p': t = OBJ_MAN; break;
    		case 'P': t = OBJ_MAN_ON_GOAL; break;
    		case '\n': x = 0; ++y; t = OBJ_UNKNOWN; break;
    		default: t = OBJ_UNKNOWN; break;
    		}
    		++d;
    		if (t != OBJ_UNKNOWN)
    		{ 
    			state[y * width + x] = t;	// 写入
    			++x;
    		}
    
    	}
    
    
    }
    
    // 绘制
    void draw(const Object* state, int width, int height)
    { 
    	// Object的可能值
    	const char font[] = { ' ', '#', '.', 'o', 'O', 'p', 'P'};
    	for (int i = 0; i < height; i++) 
    	{ 
    		for (int j = 0; j < width; j++)
    			cout << font[state[i * width + j]];
    		cout << endl;
    	}
    }
    
    // 根据输入的方向键更新数据
    void update(Object* state, char input, int width, int height)
    { 
    	int dx = 0, dy = 0;
    	switch (input)
    	{ 
    	case 'a': dx = -1; break;
    	case 's': dx = 1; break;
    	case 'w': dy = -1; break;
    	case 'z': dy = 1; break;
    	default:
    		break;
    	}
    
    	// 查询人物坐标
    	int sub = 0;
    	for (; sub < width * height; ++sub)
    		if (state[sub] == OBJ_MAN || state[sub] == OBJ_MAN_ON_GOAL)
    			break;
    
    	int xPos = sub % width;
    	int yPos = sub / width;
    
    	int xMov = xPos + dx;
    	int yMov = yPos + dy;
    
    	// 检测坐标的合理性
    	if (xMov < 0 || xMov >= width || yMov < 0 || yMov >= height)
    		return ;
    
    	// 该方向上是空白或者终点，人物则移动
    	int pPosSub = yPos * width + xPos;
    	int pMovSub = yMov * width + xMov;
    	if (state[pMovSub] == OBJ_SPACE || state[pMovSub == OBJ_GOAL])
    	{ 
    		state[pMovSub] = (state[pMovSub] == OBJ_GOAL) ? OBJ_MAN_ON_GOAL : OBJ_MAN;
    		state[pPosSub] = (state[pPosSub] == OBJ_MAN_ON_GOAL) ? OBJ_GOAL : OBJ_SPACE;
    	}
    
    	// 如果该方向上是箱子，并且该方向的下下个格子似乎空白或终点，则可以移动
    	else if (state[pMovSub] == OBJ_BLOCK || state[pMovSub] == OBJ_BLOCK_ON_GOAL)
    	{ 
    		// 下下个点坐标
    		int xMovNext = xMov + dx;
    		int yMovNext = yMov + dy;
    
    		if (xMovNext < 0 || xMovNext >= width || yMovNext < 0 || yMovNext >= height)
    			return ;
    
    		// 计算下下个点的下标
    		int pMovNext = yMovNext * width + xMovNext;
    
    		if (state[pMovNext] == OBJ_SPACE || state[pMovNext] == OBJ_GOAL)
    		{ 
    			state[pMovNext] = (state[pMovNext] == OBJ_GOAL) ? OBJ_BLOCK_ON_GOAL : OBJ_GOAL;
    			state[pMovSub] = (state[pMovSub] == OBJ_BLOCK_ON_GOAL) ? OBJ_MAN_ON_GOAL : OBJ_MAN;
    			state[pPosSub] = (state[pPosSub] == OBJ_MAN_ON_GOAL) ? OBJ_GOAL : OBJ_SPACE;
    		}
    	}
    }
    
    // 如果没有方块了则判定为通关
    bool checkClear(const Object* state, int width, int height)
    { 
    	for (int i = 0; i < width * height; ++i)
    		if (state[i] == OBJ_BLOCK)
    			return false;
    
    	return true;
    }