HGE引擎---hgeAnimation动画精灵

  通过hgeAnimation动画精灵类可以实现精灵动画，此处重点说一下构造函数的参数

  hgeAnimation(  HTEXTURE tex,  int nframes,  float FPS,  float x,  float y,  float w,  float h);

其中：

tex：存放动画的texture，可以通过hge->Texture_Load()加载；注意此处加载的是一个张图片，里面存放了每一帧的动画，如下图：

 

图中存放了包含20帧动画的图片。

nframes：指定tex中包含的动画帧数，上图即为20；

FPS：动画播放速度，以帧\秒计数；

x：第一帧动画的x坐标，一般为0；

y：第一帧动画的y坐标，一般为0,；

w：每一帧动画的宽度；

h：每一帧动画的高度；

以上图为例，可以如下设置参数：

hgeAnimation* g_animat = new hgeAnimation(g_tex, 20, 20, 0, 0, 139,91);

#include "..\..\include\hge.h"#include "..\..\include\hgesprite.h"#include "..\..\include\hgeanim.h"HGE *hge=0;HTEXTURE g_tex;hgeAnimation* g_animat;// Handle for a sound effectHEFFECT snd;// Some "gameplay" variables and constantsfloat x=100.0f, y=100.0f;float dx=0.0f, dy=0.0f;const float speed=90;const float friction=0.98f;// This function plays collision sound with// parameters based on sprite position and speedvoid boom() {int pan=int((x-400)/4);float pitch=(dx*dx+dy*dy)*0.0005f+0.2f;hge->Effect_PlayEx(snd,100,pan,pitch);}bool FrameFunc(){// Get the time elapsed since last call of FrameFunc().// This will help us to synchronize on different// machines and video modes.float dt=hge->Timer_GetDelta();// Process keysif (hge->Input_GetKeyState(HGEK_ESCAPE)) return true;if (hge->Input_GetKeyState(HGEK_LEFT)) dx-=speed*dt;if (hge->Input_GetKeyState(HGEK_RIGHT)) dx+=speed*dt;if (hge->Input_GetKeyState(HGEK_UP)) dy-=speed*dt;if (hge->Input_GetKeyState(HGEK_DOWN)) dy+=speed*dt;// Do some movement calculations and collision detectiondx*=friction; dy*=friction; x+=dx; y+=dy;if(x>784) {x=784-(x-784);dx=-dx;boom();}if(x<16) {x=16+16-x;dx=-dx;boom();}if(y>584) {y=584-(y-584);dy=-dy;boom();}if(y<16) {y=16+16-y;dy=-dy;boom();}g_animat->Update(dt);// Continue executionreturn false;}// This function will be called by HGE when// the application window should be redrawn.// Put your rendering code here.bool RenderFunc(){// Begin rendering quads.// This function must be called// before any actual rendering.hge->Gfx_BeginScene();hge->Gfx_Clear(0);// Clear screen with black colorg_animat->Render(x, y);// End rendering and update the screenhge->Gfx_EndScene();// RenderFunc should always return falsereturn false;}int WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, int){// Get HGE interfacehge = hgeCreate(HGE_VERSION);// Set up log file, frame function, render function and window titlehge->System_SetState(HGE_LOGFILE, "hge_tut02.log");hge->System_SetState(HGE_FRAMEFUNC, FrameFunc);hge->System_SetState(HGE_RENDERFUNC, RenderFunc);hge->System_SetState(HGE_TITLE, "HGE Tutorial 02 - Using input, sound and rendering");// Set up video modehge->System_SetState(HGE_WINDOWED, true);hge->System_SetState(HGE_SCREENWIDTH, 800);hge->System_SetState(HGE_SCREENHEIGHT, 600);hge->System_SetState(HGE_SCREENBPP, 32);if(hge->System_Initiate()){// Load sound and texturesnd=hge->Effect_Load("menu.wav");g_tex=hge->Texture_Load("fish01_01.png");if(!snd || !g_tex){// If one of the data files is not found, display// an error message and shutdown.MessageBox(NULL, "Can't load MENU.WAV or PARTICLES.PNG", "Error", MB_OK | MB_ICONERROR | MB_APPLMODAL);hge->System_Shutdown();hge->Release();return 0;}g_animat = new hgeAnimation(g_tex, 20, 20, 0, 0, 139,91);//g_animat->SetColor(0xFFFFA000);//g_animat->SetBlendMode(BLEND_COLORMUL | BLEND_ALPHAADD | BLEND_NOZWRITE);g_animat->SetSpeed(10);g_animat->Play();// Let's rock now!hge->System_Start();// Free loaded texture and soundhge->Effect_Free(snd);}else MessageBox(NULL, hge->System_GetErrorMessage(), "Error", MB_OK | MB_ICONERROR | MB_SYSTEMMODAL);// Clean up and shutdowndelete g_animat;hge->System_Shutdown();hge->Release();return 0;}