 一派護法 十九級 |
【Invader.cpp】
#include <stdio.h>
#include <Windows.h>
#include "Invader.h"
static unsigned char charset[16 * 8] = {
/* invader(0) */
0x00, 0x00, 0x00, 0x43, 0x5f, 0x5f, 0x5f, 0x7f,
0x1f, 0x1f, 0x1f, 0x1f, 0x00, 0x20, 0x3f, 0x00,
/* invader(1) */
0x00, 0x0f, 0x7f, 0xff, 0xcf, 0xcf, 0xcf, 0xff,
0xff, 0xe0, 0xff, 0xff, 0xc0, 0xc0, 0xc0, 0x00,
/* invader(2) */
0x00, 0xf0, 0xfe, 0xff, 0xf3, 0xf3, 0xf3, 0xff,
0xff, 0x07, 0xff, 0xff, 0x03, 0x03, 0x03, 0x00,
/* invader(3) */
0x00, 0x00, 0x00, 0xc2, 0xfa, 0xfa, 0xfa, 0xfe,
0xf8, 0xf8, 0xf8, 0xf8, 0x00, 0x04, 0xfc, 0x00,
/* fighter(0) */
0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x43, 0x47, 0x4f, 0x5f, 0x7f, 0x7f, 0x00,
/* fighter(1) */
0x18, 0x7e, 0xff, 0xc3, 0xc3, 0xc3, 0xc3, 0xff,
0xff, 0xff, 0xe7, 0xe7, 0xe7, 0xe7, 0xff, 0x00,
/* fighter(2) */
0x00, 0x00, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
0x80, 0xc2, 0xe2, 0xf2, 0xfa, 0xfe, 0xfe, 0x00,
/* laser */
0x00, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x00
};
/* invader:"abcd", fighter:"efg", laser:"h" */
HWND hWnd;
struct INVADER
{
int fighter_x; // 自机的坐标
int laser_x, laser_y; // 等离子炮弹的坐标
int invaders_x, invaders_y; // 外星人群的坐标
int invaders_direction; // 外星人群的移动方向
int laserwait; // 等离子炮弹的剩余充电时间
int movewait; // 为0时外星人群前进一步
int movewait0; // movewait的初始值（消灭30只敌人后减少）
int invaders_line; // 外星人群的行数
int score; // 当前得分
int high; // 最高得分
int point; // 得分的增加量（奖金的单价）
char invaders_str[32 * 6]; // 将外星人群的状态显示为字符串的变量
int flags; // 游戏状态
} invader;
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH); // 窗口的背景为黑色
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wcex.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
wcex.hInstance = hInstance;
wcex.lpfnWndProc = WndProc;
wcex.lpszClassName = "WC_Invader";
wcex.lpszMenuName = NULL;
wcex.style = NULL;
RegisterClassEx(&wcex);
// 根据客户区大小计算窗口大小
DWORD style = WS_CAPTION | WS_MINIMIZEBOX | WS_SYSMENU;
RECT rect;
rect.left = rect.top = 0;
rect.right = 323;
rect.bottom = 227;
AdjustWindowRect(&rect, style, NULL);
HWND hWnd = CreateWindow(wcex.lpszClassName, "Invader", style, CW_USEDEFAULT, 0, rect.right - rect.left, rect.bottom - rect.top, NULL, NULL, hInstance, NULL);
if (!hWnd)
return 1;
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);
MSG msg;
while (GetMessage(&msg, NULL, 0, 0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch (uMsg)
{
case WM_CREATE:
::hWnd = hWnd;
restart();
break;
case WM_DESTROY:
KillTimer(hWnd, IDT_TIMER1);
PostQuitMessage(0);
break;
case WM_KEYDOWN:
keyboard_handler(wParam);
break;
case WM_PAINT:
wnd_paint();
break;
default:
return DefWindowProc(hWnd, uMsg, wParam, lParam);
}
return FALSE;
}
void CALLBACK TimerProc(HWND hWnd, UINT uMsg, UINT iTimerID, DWORD dwTime)
{
if (invader.laserwait != 0)
invader.laserwait--; // 等离子炮的充电时间保证了每次只能发射一粒炮弹
invaders_move();
laser_move();
}
void gameover(void)
{
KillTimer(hWnd, IDT_TIMER1);
invader.flags |= F_GAMEOVER;
update_gameover();
}
void invaders_move(void)
{
if (invader.movewait != 0)
{
invader.movewait--;
return;
}
invader.movewait = invader.movewait0;
if (invader.invaders_x + invader.invaders_direction > 14 || invader.invaders_x + invader.invaders_direction < 0)
{
if (invader.invaders_y + invader.invaders_line == 13)
{
gameover();
return;
}
invader.invaders_direction = -invader.invaders_direction;
invader.invaders_y++;
}
else
invader.invaders_x += invader.invaders_direction;
update_invaders();
}
void keyboard_handler(WPARAM wParam)
{
switch (wParam)
{
case 0x0d:
// enter
if (invader.flags & F_GAMEOVER)
{
invader.flags &= ~F_GAMEOVER;
restart();
update();
}
break;
case 0x20:
case 0x26:
// space
if (invader.laserwait == 0)
{
invader.laserwait = 15;
invader.laser_x = invader.fighter_x + 1;
invader.laser_y = 13;
}
break;
case 0x25:
case 0x64:
// left
if (invader.fighter_x > 0)
{
invader.fighter_x--;
update_fighter();
}
break;
case 0x27:
case 0x66:
// right
if (invader.fighter_x < 37)
{
invader.fighter_x++;
update_fighter();
}
}
}
void laser_move(void)
{
if (invader.laser_y <= 0)
return; // 如果invader.laser_y已经降至0, 则不执行任何操作
invader.laser_y--;
update_laser();
if (invader.laser_y == 0)
{
// 当invader.laser_y降至0的瞬间
invader.point -= 10;
if (invader.point <= 0)
invader.point = 1;
}
if (invader.invaders_x < invader.laser_x && invader.laser_x < invader.invaders_x + 25 && invader.invaders_y <= invader.laser_y && invader.laser_y < invader.invaders_y + invader.invaders_line)
{
int pos = (invader.laser_y - invader.invaders_y) * 32 + invader.laser_x - invader.invaders_x;
if (invader.invaders_str[pos] != ' ')
{
// 击中
invader.score += invader.point;
invader.point++;
if (invader.high < invader.score)
invader.high = invader.score;
update_score();
while (pos >= 0 && invader.invaders_str[pos] != ' ')
pos--; // pos的最小值为-1
memset(&invader.invaders_str[pos + 1], ' ', 4);
update_invader_hit();
while (invader.invaders_line > 0)
{
for (pos = (invader.invaders_line - 1) * 32; invader.invaders_str[pos] != '\0'; pos++)
{
if (invader.invaders_str[pos] != ' ')
{
// 有存活的情况下
invader.laser_y = 0;
return;
}
}
invader.invaders_line--;
}
// 全部消灭的情况下
invader.movewait0 -= invader.movewait0 / 3; // 加速
next_group();
update_invaders();
}
}
}
void next_group(void)
{
static char invader_str0[32] = " abcd abcd abcd abcd abcd ";
invader.invaders_x = 7;
invader.invaders_y = 1;
invader.invaders_line = 6;
invader.laser_y = 0;
invader.movewait = invader.movewait0;
invader.invaders_direction = 1;
int i, j;
for (i = 0; i < invader.invaders_line; i++)
{
for (j = 0; j < 27; j++)
invader.invaders_str[i * 32 + j] = invader_str0[j];
}
}
void putimg(HDC hdc, RECT *rcPaint, int x, int y, COLORREF color, LPCSTR imgstr)
{
x *= 8;
y *= 16;
int i, j;
int x0, y0;
while (*imgstr != '\0')
{
if (x > rcPaint->right)
return;
if (*imgstr >= 'a' && *imgstr <= 'h')
{
int pos = 16 * (*imgstr - 'a');
for (i = 0; i < 16; i++)
{
if ((y0 = y + i) > rcPaint->bottom)
break;
if (y0 < rcPaint->top)
continue;
for (j = 0; j < 8; j++)
{
if ((x0 = x + j) > rcPaint->right)
break;
if (x0 < rcPaint->left)
continue;
if (charset[pos + i] & _BV(7 - j))
SetPixel(hdc, x0, y0, color);
}
}
}
imgstr++;
x += 8;
}
}
void putstr(HDC hdc, int x, int y, LPCSTR str)
{
TextOut(hdc, x * 8, y * 16, str, strlen(str));
}
void restart(void)
{
invader.score = 0;
invader.point = 1;
invader.movewait0 = 20;
invader.fighter_x = 18;
next_group();
SetTimer(hWnd, IDT_TIMER1, 40, TimerProc);
}
// 更新整个游戏画面
void update(void)
{
RECT rect;
GetClientRect(hWnd, &rect);
InvalidateRect(hWnd, &rect, TRUE);
}
// 更新自机部分的画面
void update_fighter(void)
{
// 擦除屏幕上y>=208的区域并重新绘制
RECT rect;
GetClientRect(hWnd, &rect);
rect.top = 208;
InvalidateRect(hWnd, &rect, TRUE);
}
// 更新GAME OVER文字
void update_gameover(void)
{
RECT rect;
rect.left = 120;
rect.top = 96;
rect.right = 264;
rect.bottom = 112;
InvalidateRect(hWnd, &rect, TRUE);
}
// 更新击中的外星人那一行画面
void update_invader_hit(void)
{
RECT rect;
GetClientRect(hWnd, &rect);
rect.top = invader.laser_y * 16;
rect.bottom = rect.top + 16;
InvalidateRect(hWnd, &rect, FALSE);
}
// 更新显示全部外星人的那部分画面
void update_invaders(void)
{
RECT rect;
GetClientRect(hWnd, &rect);
rect.top = 16;
rect.bottom = 207;
InvalidateRect(hWnd, &rect, FALSE);
}
// 更新等离子炮弹那部分画面
void update_laser(void)
{
RECT rect;
rect.left = invader.laser_x * 8;
rect.top = invader.laser_y * 16;
rect.right = rect.left + 8;
rect.bottom = rect.top + 32;
InvalidateRect(hWnd, &rect, FALSE);
}
// 更新显示得分信息的那部分画面
void update_score(void)
{
RECT rect;
GetClientRect(hWnd, &rect);
rect.bottom = 16;
InvalidateRect(hWnd, &rect, FALSE);
}
// 窗口绘制
void wnd_paint(void)
{
RECT rect;
GetClientRect(hWnd, &rect);
PAINTSTRUCT ps;
HDC hdc = BeginPaint(hWnd, &ps);
HDC hdcMem = CreateCompatibleDC(hdc);
HBITMAP hbmpMem = CreateCompatibleBitmap(hdc, rect.right - rect.left, rect.bottom - rect.top);
SelectObject(hdcMem, hbmpMem);
// 绘制分数
SetBkColor(hdcMem, COL_BLACK);
if (ps.rcPaint.top <= 16)
{
char str[15];
SetTextColor(hdcMem, COL_WHITE);
sprintf_s(str, "HIGH:%08d", invader.high);
putstr(hdcMem, 22, 0, str);
sprintf_s(str, "SCORE:%08d", invader.score);
putstr(hdcMem, 4, 0, str);
}
// 绘制外星人
int i;
for (i = 0; i < invader.invaders_line; i++)
{
putimg(hdcMem, &ps.rcPaint, invader.invaders_x, invader.invaders_y + i, COL_GREEN, invader.invaders_str + i * 32);
}
putimg(hdcMem, &ps.rcPaint, invader.fighter_x, 13, COL_CYAN, "efg"); // 绘制自机
if (invader.laser_y > 0) // 确保炮弹不会出现在显示分数的那一栏
putimg(hdcMem, &ps.rcPaint, invader.laser_x, invader.laser_y, COL_YELLOW, "h"); // 绘制炮弹
// 绘制GAME OVER字样
if (invader.flags & F_GAMEOVER)
{
SetTextColor(hdcMem, COL_RED);
putstr(hdcMem, 15, 6, "GAME OVER");
}
BitBlt(hdc, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, hdcMem, rect.left, rect.top, SRCCOPY);
EndPaint(hWnd, &ps);
DeleteDC(hdcMem);
DeleteObject(hbmpMem);
}
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