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141 lines
3.7 KiB
141 lines
3.7 KiB
#include "spritemanager.h"
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#include <framework/core/resourcemanager.h>
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#include <framework/graphics/graphics.h>
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SpriteManager g_sprites;
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SpriteManager::SpriteManager()
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{
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m_spritesCount = 0;
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m_signature = 0;
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}
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bool SpriteManager::load(const std::string& file)
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{
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try {
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g_resources.loadFile(file, m_fin);
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m_signature = fw::getu32(m_fin);
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m_spritesCount = fw::getu16(m_fin);
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m_sprites.resize(m_spritesCount);
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return true;
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} catch(std::exception& e) {
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logError("faile to load sprites from '", file, "': ", e.what());
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return false;
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}
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}
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void SpriteManager::unload()
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{
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m_sprites.clear();
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m_spritesCount = 0;
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m_signature = 0;
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}
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TexturePtr SpriteManager::loadSpriteTexture(int id)
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{
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m_fin.seekg(((id-1) * 4) + 6, std::ios_base::beg);
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uint32 spriteAddress = fw::getu32(m_fin);
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// no sprite? return an empty texture
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if(spriteAddress == 0)
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return g_graphics.getEmptyTexture();
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m_fin.seekg(spriteAddress, std::ios_base::beg);
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assert(m_fin.good());
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// skip color key
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fw::getu8(m_fin);
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fw::getu8(m_fin);
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fw::getu8(m_fin);
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uint16 pixelDataSize = fw::getu16(m_fin);
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uchar pixels[4096];
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int writePos = 0;
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int read = 0;
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// decompress pixels
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while(read < pixelDataSize) {
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uint16 transparentPixels, coloredPixels;
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m_fin.read((char*)&transparentPixels, 2);
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m_fin.read((char*)&coloredPixels, 2);
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for(int i = 0; i < transparentPixels; i++) {
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pixels[writePos + 0] = 0x00;
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pixels[writePos + 1] = 0x00;
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pixels[writePos + 2] = 0x00;
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pixels[writePos + 3] = 0x00;
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writePos += 4;
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}
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for(int i = 0; i < coloredPixels; i++) {
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pixels[writePos + 0] = fw::getu8(m_fin);
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pixels[writePos + 1] = fw::getu8(m_fin);
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pixels[writePos + 2] = fw::getu8(m_fin);
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pixels[writePos + 3] = 0xFF;
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writePos += 4;
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}
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read += 4 + (3 * coloredPixels);
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}
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// fill remaining pixels with alpha
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while(writePos < 4096) {
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pixels[writePos + 0] = 0x00;
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pixels[writePos + 1] = 0x00;
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pixels[writePos + 2] = 0x00;
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pixels[writePos + 3] = 0x00;
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writePos += 4;
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}
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return TexturePtr(new Texture(32, 32, 4, pixels));
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}
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TexturePtr SpriteManager::loadSpriteMask(TexturePtr spriteTex, SpriteMask mask)
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{
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auto pixels = spriteTex->getPixels();
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static RGBA maskColors[4] = { Color::red.rgba(), Color::green.rgba(), Color::blue.rgba(), Color::yellow.rgba() };
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RGBA maskColor = maskColors[mask];
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RGBA whiteColor = Color::white.rgba();
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RGBA alphaColor = Color::alpha.rgba();
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// convert pixels
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// masked color -> white color
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// any other color -> alpha color
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for(int i=0;i<4096;i+=4) {
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RGBA& currentColor = *(RGBA*)&pixels[i];
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if(currentColor == maskColor)
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currentColor = whiteColor;
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else
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currentColor = alphaColor;
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}
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return TexturePtr(new Texture(32, 32, 4, &pixels[0]));
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}
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TexturePtr SpriteManager::getSpriteTexture(int id, SpriteMask mask)
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{
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if(id == 0)
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return g_graphics.getEmptyTexture();
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assert(id > 0 && id <= m_spritesCount);
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// load sprites on demand
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Sprite& sprite = m_sprites[id-1];
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if(!sprite.texture)
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sprite.texture = loadSpriteTexture(id);
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//TODO: release unused sprites textures after X seconds
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// to avoid massive texture allocations
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if(mask != SpriteMaskNone) {
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if(!sprite.masks[mask])
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sprite.masks[mask] = loadSpriteMask(sprite.texture, mask);
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return sprite.masks[mask];
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} else
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return sprite.texture;
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}
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