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wagic.the.homebrew
391
JGE/src/JParticleEffect.cpp
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391
JGE/src/JParticleEffect.cpp
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//-------------------------------------------------------------------------------------
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//
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// JGE++ is a hardware accelerated 2D game SDK for PSP/Windows.
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//
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// Licensed under the BSD license, see LICENSE in JGE root for details.
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//
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// Copyright (c) 2007 James Hui (a.k.a. Dr.Watson) <jhkhui@gmail.com>
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//
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//-------------------------------------------------------------------------------------
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#include <math.h>
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#include "../include/JGE.h"
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#include "../include/JParticleSystem.h"
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#include "../include/JParticleEffect.h"
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#include "../include/JParticleEmitter.h"
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#include "../include/JFileSystem.h"
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#include "../include/JResourceManager.h"
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#include "tinyxml/tinyxml.h"
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//-------------------------------------------------------------------------------------
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JParticleEffect::JParticleEffect(JResourceManager* mgr)
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{
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mResourceManager = mgr;
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mX = 0.0f;
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mY = 0.0f;
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mEmitterCount = 0;
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}
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JParticleEffect::~JParticleEffect()
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{
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for (int i=0;i<mEmitterCount;i++)
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if (mParticleEmitters[i])
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delete (mParticleEmitters[i]);
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}
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bool JParticleEffect::Load(const char* filename)
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{
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mX = 0.0f;
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mY = 0.0f;
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mEmitterCount = 0;
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JFileSystem *fileSystem = JFileSystem::GetInstance();
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if (fileSystem == NULL) return false;
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if (!fileSystem->OpenFile(filename)) return false;
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int size = fileSystem->GetFileSize();
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char *xmlBuffer = new char[size];
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fileSystem->ReadFile(xmlBuffer, size);
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TiXmlDocument doc;
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doc.Parse(xmlBuffer);
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TiXmlNode* effect = 0;
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TiXmlNode* emitter = 0;
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TiXmlNode* param = 0;
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TiXmlNode* key = 0;
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TiXmlElement* element = 0;
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float keyTime;
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float value;
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float baseValue;
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int int_value;
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//
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// enum ParticleField
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// {
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// FIELD_SPEED,
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// FIELD_SIZE,
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// FIELD_ROTATION,
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// FIELD_ALPHA,
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// FIELD_RED,
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// FIELD_GREEN,
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// FIELD_BLUE,
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// FIELD_COUNT
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// };
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char* lifeValues[] =
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{
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"speed",
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"size",
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"rotation",
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"alpha",
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"red",
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"green",
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"blue",
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"radial_accel",
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"tangential_accel",
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"gravity"
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};
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char* typeNames[] =
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{
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"POINT",
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"AREA",
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"HORIZONTAL",
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"VERTICAL",
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"CIRCLE"
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};
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char* modeNames[] =
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{
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"REPEAT",
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"ONCE",
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"NTIMES",
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"CONTINUOUS"
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};
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int i;
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//////////////////////////////////////////////////////////////////////////
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// One effect per file only, well, we may extend it later to permit
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// multiple effect definitions:
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//
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// for (effect = doc.FirstChild("effect"); effect; effect = effect->NextSibling())
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//
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//////////////////////////////////////////////////////////////////////////
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effect = doc.FirstChild("effect");
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if (effect)
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{
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element = effect->ToElement();
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printf("%s:%s\n", element->Value(), element->Attribute("name"));
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for (emitter = effect->FirstChild("emitter"); emitter && mEmitterCount < MAX_EMITTER; emitter = emitter->NextSibling())
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{
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mParticleEmitters[mEmitterCount] = new JParticleEmitter(this);
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element = emitter->ToElement();
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if (element->QueryFloatAttribute("life", &value) == TIXML_SUCCESS)
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mParticleEmitters[mEmitterCount]->mLife = value;
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for (param = emitter->FirstChild(); param; param = param->NextSibling())
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{
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element = param->ToElement();
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if (strcmp(element->Attribute("name"), "settings")==0)
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{
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if (strcmp(element->Attribute("blend"), "NORMAL")==0)
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mParticleEmitters[mEmitterCount]->SetBlending(BLEND_SRC_ALPHA, BLEND_ONE_MINUS_SRC_ALPHA);
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else if (strcmp(element->Attribute("blend"), "ADDITIVE")==0)
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mParticleEmitters[mEmitterCount]->SetBlending(BLEND_SRC_ALPHA, BLEND_ONE);
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for (i=0;i<sizeof(modeNames)/sizeof(char*);i++)
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{
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if (strcmp(element->Attribute("mode"), modeNames[i])==0)
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{
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mParticleEmitters[mEmitterCount]->mEmitterMode = i;
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#if defined (_DEBUG)
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printf("emitter mode:%s\n", modeNames[i]);
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#endif
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break;
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}
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}
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for (i=0;i<sizeof(typeNames)/sizeof(char*);i++)
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{
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if (strcmp(element->Attribute("type"), typeNames[i])==0)
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{
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mParticleEmitters[mEmitterCount]->mType = i;
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#if defined (_DEBUG)
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printf("emitter type:%s\n", typeNames[i]);
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#endif
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break;
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}
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}
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string quadName = element->Attribute("image");
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JQuad* quad = mResourceManager->GetQuad(quadName);
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if (quad != NULL)
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mParticleEmitters[mEmitterCount]->SetQuad(quad);
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// if (element->QueryIntAttribute("image", &int_value) == TIXML_SUCCESS)
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// {
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// mParticleEmitters[mEmitterCount]->mQuadIndex = int_value;
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//
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// }
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if (element->QueryIntAttribute("width", &int_value) == TIXML_SUCCESS)
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{
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mParticleEmitters[mEmitterCount]->mWidth = int_value;
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}
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if (element->QueryIntAttribute("height", &int_value) == TIXML_SUCCESS)
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{
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mParticleEmitters[mEmitterCount]->mHeight = int_value;
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}
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if (element->QueryIntAttribute("id", &int_value) == TIXML_SUCCESS)
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{
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mParticleEmitters[mEmitterCount]->mId = int_value;
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}
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if (element->QueryIntAttribute("repeat_count", &int_value) == TIXML_SUCCESS)
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{
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mParticleEmitters[mEmitterCount]->mRepeatTimes = int_value;
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}
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}
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else if (strcmp(element->Attribute("name"), "quantity")==0)
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{
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for (key = param->FirstChild(); key; key = key->NextSibling())
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{
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element = key->ToElement();
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if (element->QueryFloatAttribute("timeslice", &keyTime) == TIXML_SUCCESS &&
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element->QueryFloatAttribute("value", &value) == TIXML_SUCCESS)
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{
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mParticleEmitters[mEmitterCount]->mQuantity.AddKey(keyTime, value);
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}
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}
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}
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else if (strcmp(element->Attribute("name"), "lifex")==0)
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{
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if (element->QueryFloatAttribute("base", &baseValue) == TIXML_SUCCESS &&
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element->QueryFloatAttribute("max", &value) == TIXML_SUCCESS)
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{
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mParticleEmitters[mEmitterCount]->mLifeBase = baseValue;
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mParticleEmitters[mEmitterCount]->mLifeMax= value;
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}
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}
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else if (strcmp(element->Attribute("name"), "anglex")==0)
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{
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if (element->QueryFloatAttribute("base", &baseValue) == TIXML_SUCCESS &&
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element->QueryFloatAttribute("max", &value) == TIXML_SUCCESS)
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{
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mParticleEmitters[mEmitterCount]->mAngleBase = baseValue*DEG2RAD;
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mParticleEmitters[mEmitterCount]->mAngleMax= value*DEG2RAD;
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}
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}
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else if (strcmp(element->Attribute("name"), "speedx")==0)
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{
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if (element->QueryFloatAttribute("base", &baseValue) == TIXML_SUCCESS &&
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element->QueryFloatAttribute("max", &value) == TIXML_SUCCESS)
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{
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mParticleEmitters[mEmitterCount]->mSpeedBase = baseValue;
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mParticleEmitters[mEmitterCount]->mSpeedMax= value;
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}
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}
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else if (strcmp(element->Attribute("name"), "sizex")==0)
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{
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if (element->QueryFloatAttribute("base", &baseValue) == TIXML_SUCCESS &&
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element->QueryFloatAttribute("max", &value) == TIXML_SUCCESS)
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{
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mParticleEmitters[mEmitterCount]->mSizeBase = baseValue;
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mParticleEmitters[mEmitterCount]->mSizeMax= value;
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}
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}
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else
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{
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for (int i=0;i<FIELD_COUNT;i++)
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{
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if (strcmp(element->Attribute("name"), lifeValues[i])==0)
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{
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for (key = param->FirstChild(); key; key = key->NextSibling())
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{
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element = key->ToElement();
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if (element->QueryFloatAttribute("lifeslice", &keyTime) == TIXML_SUCCESS &&
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element->QueryFloatAttribute("value", &value) == TIXML_SUCCESS)
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{
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if (i==FIELD_ROTATION)
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value *= DEG2RAD;
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mParticleEmitters[mEmitterCount]->mData[i].AddKey(keyTime, value);
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}
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}
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break;
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}
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}
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}
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}
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mEmitterCount++;
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}
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}
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fileSystem->CloseFile();
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delete[] xmlBuffer;
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return true;
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}
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void JParticleEffect::SetParticleSystem(JParticleSystem* particleSys)
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{
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mParticleSystem = particleSys;
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}
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void JParticleEffect::SetPosition(float x, float y)
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{
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mX = x;
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mY = y;
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}
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JParticleSystem* JParticleEffect::GetParticleSystem()
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{
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return mParticleSystem;
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}
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float JParticleEffect::GetX()
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{
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return mX;
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}
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float JParticleEffect::GetY()
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{
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return mY;
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}
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void JParticleEffect::Update(float dt)
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{
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// mTimer += dt;
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for (int i=0;i<mEmitterCount;i++)
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mParticleEmitters[i]->Update(dt);
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}
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void JParticleEffect::Render()
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{
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for (int i=0;i<mEmitterCount;i++)
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mParticleEmitters[i]->Render();
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}
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bool JParticleEffect::Done()
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{
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bool done = true;
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for (int i=0;i<mEmitterCount;i++)
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if (!mParticleEmitters[i]->Done())
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done = false;
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return (done);
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}
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void JParticleEffect::Start()
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{
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for (int i=0;i<mEmitterCount;i++)
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mParticleEmitters[i]->Start();
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}
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void JParticleEffect::Stop()
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{
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for (int i=0;i<mEmitterCount;i++)
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mParticleEmitters[i]->SetActive(false);
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}
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void JParticleEffect::MoveTo(float x, float y)
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{
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float dx = x - mX;
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float dy = y - mY;
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mX = x;
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mY = y;
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for (int i=0;i<mEmitterCount;i++)
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{
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mParticleEmitters[i]->MoveAllParticles(dx, dy);
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}
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}
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