游戲中的傷害值敵人傷害值，傷害數(shù)字飄飄悠悠最后消失 
，我們將起歸納到Effect中，猶如粒子一樣，有時(shí)間生命，資源如下：
我們根據(jù)不同的傷害選擇不同的顏色，英雄對(duì)敵人傷害白色，怪物對(duì)英雄傷害紅色….我們主要確定在屏幕的鼠標(biāo)位置確定好我們的傷害數(shù)值的UV坐標(biāo)，如我們隊(duì)怪物傷害為59，分別將數(shù)字5和數(shù)字9作為粒子特效，出現(xiàn)消失
我們功過函數(shù)DrawNumberCharBitmap來確定每位數(shù)字的UV坐標(biāo)
struct SChar
{
char c; // 字母
int x, y; // 位置
int bottom; // 底部參考坐標(biāo)
int nWidth, nHeight; // 大小
DWORD dwBornTime; // 出生時(shí)間
DWORD dwLife; // 生命
float alpha;
};
enum
{
eMiss,
eNumberBlue,
eNumberRed,
eNumberGreen,
eNumberYellow,
}
struct SParticle
{
int nType; //特效類型
int nStartX, nStartY;
int x, y;
int nWidth, nHeight;
int nSrcWidth, nSrcHeight;
DWORD dwColor;
DWORD dwStartTime;
DWORD dwLastUpdateTime;
DWORD dwLife; //粒子存在時(shí)間
int nNumber; //將數(shù)值記錄下來,eg:59傷害
int nNumChar; //傷害數(shù)字長(zhǎng)度
SChar chars[eMaxChar]; //每位值都作為一個(gè)單獨(dú)的粒子
};
for( int nChar = 0; nChar < pParticle->nNumChar; nChar++ ) //數(shù)字長(zhǎng)度
{
SChar* pChar = &pParticle->chars[nChar];
DrawNumberCharBitmap( int x, int y, int w, int h, int start_line, DWORD color, int nNumber, Simple2DVertex vertex[] );
}
//確定UV坐標(biāo)
void DrawNumberCharBitmap( int x, int y, int w, int h, int start_line, DWORD color, int nNumber, Simple2DVertex vertex[] )
{
static POINT index[10] =
{
0, 0,
0, 1,
0, 2,
0, 3,
0, 4,
0, 5,
0, 6,
0, 7,
1, 0,
1, 1,
};
RECT rect;
rect.left = x;
rect.top = y;
rect.right = x+w;
rect.bottom = y+h;
//
float sdv = 1.0f / 4 * start_line;
float du = 1.0f/8;
float dv = 1.0f/8;
int row = index[nNumber].x;
int col = index[nNumber].y;
float z = 0.0f;
vertex[0].p = D3DXVECTOR4( rect.left, rect.bottom, z, 1 );
vertex[0].color = color;
vertex[0].u = du*col;
vertex[0].v = sdv + dv*row+dv;
vertex[1].p = D3DXVECTOR4( rect.left, rect.top, z, 1 );
vertex[1].color = color;
vertex[1].u = du*col;
vertex[1].v = sdv + dv*row;
vertex[2].p = D3DXVECTOR4( rect.right, rect.bottom, z, 1 );
vertex[2].color = color;
vertex[2].u = du*col+du;
vertex[2].v = sdv + dv*row+dv;
vertex[3].p = D3DXVECTOR4( rect.right, rect.top, z, 1 );
vertex[3].color = color;
vertex[3].u = du*col+du;
vertex[3].v = sdv + dv*row;
}
posted on 2010-07-20 15:01
風(fēng)輕云淡 閱讀(1020)
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