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299 lines
10 KiB
C++
299 lines
10 KiB
C++
//****************************************************************************
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//* MODULE: Gfx
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//* FILENAME: p_nxParticle.cpp
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//* OWNER: Paul Robinson
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//* CREATION DATE: 3/27/2002
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//****************************************************************************
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#include <core/defines.h>
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#include "gfx/Ngc/nx/render.h"
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#include <gfx/NxTexMan.h>
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#include <gfx/Ngc/p_nxtexture.h>
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#include "gfx/Ngc/nx/mesh.h"
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#include "gfx/ngc/nx/nx_init.h"
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#include "sys/ngc/p_gx.h"
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#include "gfx/Ngc/p_nxparticleflat.h"
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namespace Nx
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{
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/******************************************************************/
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/* */
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/* */
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/******************************************************************/
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CNgcParticleFlat::CNgcParticleFlat()
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{
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}
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/******************************************************************/
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/* */
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/* */
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/******************************************************************/
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CNgcParticleFlat::CNgcParticleFlat( uint32 checksum, int max_particles, uint32 texture_checksum, uint32 blendmode_checksum, int fix, int num_segments, float split, int history )
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{
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m_checksum = checksum;
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m_max_particles = max_particles;
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m_num_particles = 0;
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mp_particle_array = new CParticleEntry[max_particles];
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// Allocate vertex buffer.
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mp_vertices = new float[max_particles * 3];
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// // Create the engine representation.
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// mp_engine_particle = new NxNgc::sParticleSystem( max_particles, texture_checksum, blendmode_checksum, fix );
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//
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// Get the texture.
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Nx::CTexture *p_texture;
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Nx::CNgcTexture *p_Ngc_texture;
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mp_engine_texture = NULL;
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p_texture = Nx::CTexDictManager::sp_particle_tex_dict->GetTexture( texture_checksum );
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p_Ngc_texture = static_cast<Nx::CNgcTexture*>( p_texture );
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if ( p_Ngc_texture )
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{
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mp_engine_texture = p_Ngc_texture->GetEngineTexture();
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}
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// Set blendmode.
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m_blend = (uint8)get_texture_blend( blendmode_checksum );
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m_fix = fix;
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// Default color.
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m_start_color.r = 128;
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m_start_color.g = 128;
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m_start_color.b = 128;
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m_start_color.a = 128;
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m_mid_color.r = 128;
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m_mid_color.g = 128;
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m_mid_color.b = 128;
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m_mid_color.a = 128;
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m_end_color.r = 128;
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m_end_color.g = 128;
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m_end_color.b = 128;
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m_end_color.a = 128;
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m_mid_time = -1.0f;
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}
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/******************************************************************/
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/* */
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/* */
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/******************************************************************/
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CNgcParticleFlat::~CNgcParticleFlat()
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{
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delete [] mp_particle_array;
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delete [] mp_vertices;
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// delete mp_engine_particle;
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}
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/******************************************************************/
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/* */
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/* */
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/******************************************************************/
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void CNgcParticleFlat::plat_get_position( int entry, int list, float * x, float * y, float * z )
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{
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float* p_v = &mp_vertices[entry*3];
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*x = p_v[0];
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*y = p_v[1];
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*z = p_v[2];
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}
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/******************************************************************/
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/* */
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/* */
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/******************************************************************/
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void CNgcParticleFlat::plat_set_position( int entry, int list, float x, float y, float z )
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{
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float* p_v = &mp_vertices[entry*3];
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p_v[0] = x;
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p_v[1] = y;
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p_v[2] = z;
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}
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/******************************************************************/
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/* */
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/* */
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/******************************************************************/
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void CNgcParticleFlat::plat_add_position( int entry, int list, float x, float y, float z )
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{
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float* p_v = &mp_vertices[entry*3];
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p_v[0] += x;
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p_v[1] += y;
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p_v[2] += z;
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}
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/******************************************************************/
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/* */
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/* */
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/******************************************************************/
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int CNgcParticleFlat::plat_get_num_particle_colors( void ) { return 1; }
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int CNgcParticleFlat::plat_get_num_vertex_lists( void ) { return 1; }
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void CNgcParticleFlat::plat_set_sr( int entry, uint8 value ) { m_start_color.r = value; }
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void CNgcParticleFlat::plat_set_sg( int entry, uint8 value ) { m_start_color.g = value; }
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void CNgcParticleFlat::plat_set_sb( int entry, uint8 value ) { m_start_color.b = value; }
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void CNgcParticleFlat::plat_set_sa( int entry, uint8 value ) { m_start_color.a = value; }
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void CNgcParticleFlat::plat_set_mr( int entry, uint8 value ) { m_mid_color.r = value; }
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void CNgcParticleFlat::plat_set_mg( int entry, uint8 value ) { m_mid_color.g = value; }
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void CNgcParticleFlat::plat_set_mb( int entry, uint8 value ) { m_mid_color.b = value; }
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void CNgcParticleFlat::plat_set_ma( int entry, uint8 value ) { m_mid_color.a = value; }
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void CNgcParticleFlat::plat_set_er( int entry, uint8 value ) { m_end_color.r = value; }
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void CNgcParticleFlat::plat_set_eg( int entry, uint8 value ) { m_end_color.g = value; }
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void CNgcParticleFlat::plat_set_eb( int entry, uint8 value ) { m_end_color.b = value; }
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void CNgcParticleFlat::plat_set_ea( int entry, uint8 value ) { m_end_color.a = value; }
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/******************************************************************/
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/* */
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/* */
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/******************************************************************/
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void CNgcParticleFlat::plat_render( void )
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{
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NxNgc::sMaterialHeader mat;
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NxNgc::sMaterialPassHeader pass;
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// Header.
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mat.m_checksum = 0xa9db601e; // particle
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mat.m_passes = 1;
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mat.m_alpha_cutoff = 1;
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mat.m_flags = (1<<1); // 2 sided.
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// mat.m_shininess = 0.0f;
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// Pass 0.
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pass.m_texture.p_data = mp_engine_texture;
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pass.m_flags = ( mp_engine_texture ? (1<<0) : 0 ) | (1<<5) | (1<<6); // textured, clamped.
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pass.m_filter = 0;
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pass.m_blend_mode = (unsigned char)m_blend;
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pass.m_alpha_fix = (unsigned char)m_fix;
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pass.m_k = 0;
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pass.m_color.r = 128;
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pass.m_color.g = 128;
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pass.m_color.b = 128;
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pass.m_color.a = 255;
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NxNgc::multi_mesh( &mat, &pass, true, true );
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GX::SetTexCoordGen( GX_TEXCOORD0, GX_TG_MTX2x4, GX_TG_TEX0, GX_FALSE, GX_PTIDENTITY );
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GX::SetCurrMtxPosTex03( GX_PNMTX0, GX_IDENTITY, GX_IDENTITY, GX_IDENTITY, GX_IDENTITY );
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// Draw the particles.
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// Used to figure the right and up vectors for creating screen-aligned particle quads.
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NsMatrix* p_matrix = &NxNgc::EngineGlobals.camera;
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// Concatenate p_matrix with the emmission angle to create the direction.
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NsVector up( 0.0f, 1.0f, 0.0f );
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// Get the 'right' vector as the cross product of camera 'at and world 'up'.
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NsVector screen_right;
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NsVector screen_up;
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screen_right.cross( *p_matrix->getAt(), up );
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screen_up.cross( screen_right, *p_matrix->getAt());
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screen_right.normalize();
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screen_up.normalize();
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int lp;
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CParticleEntry *p_particle;
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float *p_v;
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if ( mp_engine_texture )
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{
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GX::SetVtxDesc( 3, GX_VA_POS, GX_DIRECT, GX_VA_CLR0, GX_DIRECT, GX_VA_TEX0, GX_DIRECT );
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}
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else
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{
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GX::SetVtxDesc( 2, GX_VA_POS, GX_DIRECT, GX_VA_CLR0, GX_DIRECT );
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}
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if ( m_num_particles > 0 ) GX::Begin( GX_QUADS, GX_VTXFMT0, m_num_particles * 4 );
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for ( lp = 0, p_particle = mp_particle_array, p_v = mp_vertices; lp < m_num_particles; lp++, p_particle++, p_v += 3 )
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{
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float terp = p_particle->m_time / p_particle->m_life;
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float w = p_particle->m_sw + ( ( p_particle->m_ew - p_particle->m_sw ) * terp );
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float h = p_particle->m_sh + ( ( p_particle->m_eh - p_particle->m_sh ) * terp );
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// Todo: Move hook to matrix/emitter code to cut down on per particle calculation.
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Mth::Vector pos( p_v[0] + m_pos[X], p_v[1] + m_pos[Y], p_v[2] + m_pos[Z] );
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Mth::Vector ss_right, ss_up; //, ss_pos;
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Mth::Vector tmp[4];
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VECScale((Vec*)&screen_right, (Vec*)&ss_right, w );
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VECScale((Vec*)&screen_up, (Vec*)&ss_up, h );
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tmp[0] = pos - ss_right + ss_up;
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tmp[1] = pos + ss_right + ss_up;
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tmp[2] = pos + ss_right - ss_up;
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tmp[3] = pos - ss_right - ss_up;
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GXColor color;
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GXColor *p_col0;
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GXColor *p_col1;
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if ( m_mid_time >= 0.0f )
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{
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if ( terp < m_mid_time )
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{
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p_col0 = &m_start_color;
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p_col1 = &m_mid_color;
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// Adjust interpolation for this half of the color blend.
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terp = terp / m_mid_time;
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}
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else
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{
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p_col0 = &m_mid_color;
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p_col1 = &m_end_color;
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// Adjust interpolation for this half of the color blend.
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terp = ( terp - m_mid_time ) / ( 1.0f - m_mid_time );
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}
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}
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else
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{
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// No mid color specified.
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p_col0 = &m_start_color;
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p_col1 = &m_end_color;
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}
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GXColor start = *p_col0;
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GXColor end = *p_col1;
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color.r = start.r + (uint8)(( ((float)( end.r - start.r )) * terp ));
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color.g = start.g + (uint8)(( ((float)( end.g - start.g )) * terp ));
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color.b = start.b + (uint8)(( ((float)( end.b - start.b )) * terp ));
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color.a = start.a + (uint8)(( ((float)( end.a - start.a )) * terp ));
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GX::Position3f32( tmp[0][X], tmp[0][Y], tmp[0][Z] );
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GX::Color1u32( *((uint32*)&color) );
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if ( mp_engine_texture ) GX::TexCoord2f32( 0.0f, 0.0f );
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GX::Position3f32( tmp[1][X], tmp[1][Y], tmp[1][Z] );
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GX::Color1u32( *((uint32*)&color) );
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if ( mp_engine_texture ) GX::TexCoord2f32( 1.0f, 0.0f );
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GX::Position3f32( tmp[2][X], tmp[2][Y], tmp[2][Z] );
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GX::Color1u32( *((uint32*)&color) );
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if ( mp_engine_texture ) GX::TexCoord2f32( 1.0f, 1.0f );
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GX::Position3f32( tmp[3][X], tmp[3][Y], tmp[3][Z] );
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GX::Color1u32( *((uint32*)&color) );
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if ( mp_engine_texture ) GX::TexCoord2f32( 0.0f, 1.0f );
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}
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if ( m_num_particles > 0 ) GX::End();
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}
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} // Nx
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