88 lines
3.3 KiB
C
88 lines
3.3 KiB
C
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#pragma once
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#include "framework.h"
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#define MAX_LOADSTRING 100
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#define BUF_SIZE 255
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#define MOVESEP 50
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#define MAX(a, b) ((a) > (b) ? (a) : (b))
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#define SIGN(x) ((x) > 0 ? 1 : (((x) == 0) ? 0 : -1))
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enum { DGravity = 4, DUp = 0, DDown = 3, DLeft = 1, DRight = 2, DStay = 5, Gravity = 3 };
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enum { StdWidth = 32, StdHeight = 32, WindowWidth = 720, WindowHeight = 480, GAME_HEAD, GAME_START, GAME_PAUSE, GAME_LOAD, GAME_SET, GAME_ABOUT };
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enum { ById, ByName, ByFree };
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typedef int Direction;
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typedef int Mode;
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// #define OPEN_DEBUG
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// 调试输出
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namespace DebugOutPut {
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inline void openConsole() {
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AllocConsole();
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}
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inline void closeConsole() {
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FreeConsole();
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}
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inline void output(const char buf[]) {
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HANDLE hd = GetStdHandle(STD_OUTPUT_HANDLE);
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WriteConsole(hd, buf, strlen(buf), NULL, NULL);
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CloseHandle(hd);
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}
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}; // namespace DebugOutPut
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// 设置文字
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inline void setText(LPCSTR fName, COLORREF color, LONG fHeight, LONG fWeight) {
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settextcolor(color);
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LOGFONT f;
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gettextstyle(&f);
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f.lfHeight = fHeight;
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f.lfWeight = fWeight;
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_tcscpy_s(f.lfFaceName, fName);
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settextstyle(&f);
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}
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// 绘图函数，补充透明度
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inline void drawAlpha(IMAGE* image, int x, int y, int width, int height, int pic_x, int pic_y, double AA = 1) {
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// 变量初始化
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DWORD* dst = GetImageBuffer(); // GetImageBuffer()函数，用于获取绘图设备的显存指针，EASYX自带
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DWORD* draw = GetImageBuffer();
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DWORD* src = GetImageBuffer(image); // 获取picture的显存指针
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int imageWidth = image->getwidth(); // 获取图片宽度
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int imageHeight = image->getheight(); // 获取图片宽度
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int dstX = 0; // 在 绘图区域 显存里像素的角标
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int srcX = 0; // 在 image 显存里像素的角标
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// 实现透明贴图 公式： Cp=αp*FP+(1-αp)*BP ， 贝叶斯定理来进行点颜色的概率计算
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for(int iy = 0; iy < height; iy++) {
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for(int ix = 0; ix < width; ix++) {
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// 防止越界
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if(ix + pic_x >= 0 && ix + pic_x < imageWidth && iy + pic_y >= 0 && iy + pic_y < imageHeight && ix + x >= 0 && ix + x < WindowWidth && iy + y >= 0 && iy + y < WindowHeight) {
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// 获取像素角标
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int srcX = (ix + pic_x) + (iy + pic_y) * imageWidth;
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dstX = (ix + x) + (iy + y) * WindowWidth;
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int sa = ((src[srcX] & 0xff000000) >> 24) * AA; // 0xAArrggbb;AA是透明度
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int sr = ((src[srcX] & 0xff0000) >> 16); // 获取 RGB 里的 R
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int sg = ((src[srcX] & 0xff00) >> 8); // G
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int sb = src[srcX] & 0xff; // B
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// 设置对应的绘图区域像素信息
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int dr = ((dst[dstX] & 0xff0000) >> 16);
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int dg = ((dst[dstX] & 0xff00) >> 8);
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int db = dst[dstX] & 0xff;
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draw[dstX] = ((sr * sa / 255 + dr * (255 - sa) / 255) << 16) // 公式： Cp=αp*FP+(1-αp)*BP ； αp=sa/255 , FP=sr , BP=dr
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| ((sg * sa / 255 + dg * (255 - sa) / 255) << 8) // αp=sa/255 , FP=sg , BP=dg
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| (sb * sa / 255 + db * (255 - sa) / 255); // αp=sa/255 , FP=sb , BP=db
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}
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}
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}
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}
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