forked from demoscene-source-archive/world-domination
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object.c
294 lines (240 loc) · 9.15 KB
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object.c
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#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <d3d9.h>
#include "object.h"
#include "file.h"
#include "texturemanager.h"
#include "material.h"
void generate_normals(object *obj){
unsigned int mesh,i;
unsigned short *face;
if(!obj) return;
for(i=0;i<obj->vertex_count;i++)
obj->vertices[i].normal = vector_make(0,0,0);
for(mesh=0;mesh<obj->submesh_count;mesh++){
face = obj->submeshes[mesh].triangles;
for(i=0;i<obj->submeshes[mesh].triangle_count;i++){
vector facenormal = vector_scale(
vector_crossproduct(
vector_sub( obj->vertices[face[i*3+2]].vertex, obj->vertices[face[i*3+0]].vertex ),
vector_sub( obj->vertices[face[i*3+1]].vertex, obj->vertices[face[i*3+0]].vertex )
),-1
);
obj->vertices[face[i*3+0]].normal = vector_add( obj->vertices[face[i*3+0]].normal, facenormal );
obj->vertices[face[i*3+1]].normal = vector_add( obj->vertices[face[i*3+1]].normal, facenormal );
obj->vertices[face[i*3+2]].normal = vector_add( obj->vertices[face[i*3+2]].normal, facenormal );
}
}
// for(i=0;i<obj->vertex_count;i++)
// obj->vertices[i].normal = vector_normalize(obj->vertices[i].normal);
}
static char *get_dirname(char *filename){
char temp[256];
int i = strlen(filename);
while(i--){
if((filename[i]=='\\')||(filename[i]=='/')){
break;
}
}
strncpy(temp,filename,i+1);
temp[i+1] = '\0';
return strdup(temp);
}
object *load_object(IDirect3DDevice9 *device, char *filename){
matrix position, rotation, scale;
vector position_vector, scale_vector;
quat rotation_quat;
unsigned int submesh_counter;
char test[4];
object *temp;
file *fp;
vertex *dest;
if(!filename) return NULL;
fp = file_open(filename);
if(!fp) return NULL;
file_read(test,1,4,fp);
if(memcmp(test,"KRO0",4)!=0){
file_close(fp);
return NULL;
}
temp = (object*)malloc(sizeof(object));
if(!temp) return NULL;
file_read(&position_vector,sizeof(float),3,fp);
file_read(&rotation_quat,sizeof(float),4,fp);
file_read(&scale_vector,sizeof(float),3,fp);
file_read(&temp->vertex_count,1,4,fp);
if(temp->vertex_count==0){
/* dummy-object, skip loading */
file_close(fp);
temp->update = FALSE;
temp->vertexbuffer = NULL;
temp->vertices = 0;
temp->submesh_count = 0;
temp->submeshes = NULL;
/* save prs */
temp->prs.pos = position_vector;
temp->prs.rot = rotation_quat;
temp->prs.scale = scale_vector;
/* build matrix */
matrix_identity(temp->mat);
matrix_translate(position, position_vector);
matrix_from_quat(rotation, rotation_quat);
matrix_scale(scale, scale_vector);
matrix_multiply(temp->mat, temp->mat, position);
matrix_multiply(temp->mat, temp->mat, rotation);
matrix_multiply(temp->mat, temp->mat, scale);
return temp;
}
temp->vertices = (vertex*)malloc(sizeof(vertex)*temp->vertex_count);
if(!temp->vertices) return FALSE;
file_read(temp->vertices,sizeof(vertex),temp->vertex_count,fp);
file_read(&temp->morphtarget_count,1,4,fp);
temp->morphtarget_vertices = malloc(sizeof(vector)*temp->vertex_count*temp->morphtarget_count);
if(!temp->morphtarget_vertices) return FALSE;
file_read(temp->morphtarget_vertices,sizeof(vector),temp->vertex_count*temp->morphtarget_count,fp);
file_read(&temp->submesh_count,1,4,fp);
temp->submeshes = (submesh*)malloc(sizeof(submesh)*temp->submesh_count);
if(!temp->submeshes) return FALSE;
for(submesh_counter=0;submesh_counter<temp->submesh_count;submesh_counter++){
unsigned int* dest;
char mat_name[256];
char *material_name = file_loadstring(fp);
sprintf(mat_name,"%s%s",get_dirname(filename),material_name);
temp->submeshes[submesh_counter].mat = material_load(device,mat_name);
file_read(&temp->submeshes[submesh_counter].triangle_count,1,4,fp);
temp->submeshes[submesh_counter].triangles = (unsigned short*)malloc(sizeof(unsigned short)*3*temp->submeshes[submesh_counter].triangle_count);
if(!temp->submeshes[submesh_counter].triangles) return FALSE;
file_read(temp->submeshes[submesh_counter].triangles,sizeof(unsigned short)*3,temp->submeshes[submesh_counter].triangle_count,fp);
if(FAILED(IDirect3DDevice9_CreateIndexBuffer(device,sizeof(unsigned short)*3*temp->submeshes[submesh_counter].triangle_count,0,D3DFMT_INDEX16,D3DPOOL_MANAGED,&temp->submeshes[submesh_counter].indexbuffer,NULL)))
return FALSE;
if(IDirect3DIndexBuffer9_Lock(temp->submeshes[submesh_counter].indexbuffer,0,0,&dest,0)==D3D_OK){
memcpy(dest,temp->submeshes[submesh_counter].triangles,sizeof(unsigned short)*3*temp->submeshes[submesh_counter].triangle_count);
IDirect3DIndexBuffer9_Unlock(temp->submeshes[submesh_counter].indexbuffer);
}else return FALSE;
}
file_close(fp);
if(temp->morphtarget_count > 0) {
printf("something shall morph!");
if(FAILED(IDirect3DDevice9_CreateVertexBuffer(device,sizeof(vertex)*temp->vertex_count,D3DUSAGE_DYNAMIC|D3DUSAGE_WRITEONLY,OBJECT_VERTEX_TYPE,D3DPOOL_DEFAULT,&temp->vertexbuffer,NULL)))
return FALSE;
} else {
if(FAILED(IDirect3DDevice9_CreateVertexBuffer(device,sizeof(vertex)*temp->vertex_count,0,OBJECT_VERTEX_TYPE,D3DPOOL_MANAGED,&temp->vertexbuffer,NULL)))
return FALSE;
}
if(IDirect3DVertexBuffer9_Lock(temp->vertexbuffer, 0, 0, (BYTE**)&dest, 0)==D3D_OK){
memcpy(dest,temp->vertices,sizeof(vertex)*temp->vertex_count);
IDirect3DVertexBuffer9_Unlock(temp->vertexbuffer);
temp->update = FALSE;
}else return FALSE;
/* save prs */
temp->prs.pos = position_vector;
temp->prs.rot = rotation_quat;
temp->prs.scale = scale_vector;
/* build matrix */
matrix_identity(temp->mat);
matrix_translate(position, position_vector);
matrix_from_quat(rotation, rotation_quat);
matrix_scale(scale, scale_vector);
matrix_multiply(temp->mat, temp->mat, position);
matrix_multiply(temp->mat, temp->mat, rotation);
matrix_multiply(temp->mat, temp->mat, scale);
return temp;
}
void free_object(object *obj){
unsigned int mesh;
if(obj->vertexbuffer) IDirect3DVertexBuffer9_Release(obj->vertexbuffer);
if(obj->vertices){
free(obj->vertices);
obj->vertices=NULL;
}
if(obj->submeshes){
for(mesh=0;mesh<obj->submesh_count;mesh++){
if(obj->submeshes[mesh].indexbuffer) IDirect3DIndexBuffer9_Release(obj->submeshes[mesh].indexbuffer);
obj->submeshes[mesh].indexbuffer = NULL;
free(obj->submeshes[mesh].triangles);
obj->submeshes[mesh].triangles=NULL;
}
free(obj->submeshes);
obj->submeshes=NULL;
}
free(obj);
}
void morph_object(object *obj, float t){
unsigned int i;
vector *p1, *p2;
vertex *d;
int start, end;
t = (float)fmod(t,1);
if(t==0) start = 0;
else start = (int)(((float)obj->morphtarget_count)*t);
end = start+1;
t -= (float)start/(float)obj->morphtarget_count;
t *= obj->morphtarget_count;
if(!obj) return;
if(obj->morphtarget_count<2) return;
if(t>1) t=1;
if(t<0) t=0;
start %= obj->morphtarget_count;
end %= obj->morphtarget_count;
p1 = &obj->morphtarget_vertices[obj->vertex_count*start];
p2 = &obj->morphtarget_vertices[obj->vertex_count*end];
d = obj->vertices;
for(i=0;i<obj->vertex_count;i++){
d->vertex = vector_add(*p1,vector_scale(vector_sub(*p2,*p1),t));
p1++;
p2++;
d++;
}
obj->update = TRUE;
}
void draw_object(IDirect3DDevice9 *device, object *obj){
unsigned int mesh;
if(!device) return;
if(!obj) return;
if(obj->update){
vertex *dest;
generate_normals(obj);
IDirect3DVertexBuffer9_Lock(obj->vertexbuffer, 0, 0, (BYTE**)&dest, 0 );
memcpy(dest,obj->vertices,sizeof(vertex)*obj->vertex_count);
IDirect3DVertexBuffer9_Unlock(obj->vertexbuffer);
obj->update = FALSE;
}
IDirect3DDevice9_SetTransform( device, D3DTS_WORLD, (D3DMATRIX*)&obj->mat );
IDirect3DDevice9_SetStreamSource(device, 0, obj->vertexbuffer, 0, sizeof(vertex));
IDirect3DDevice9_SetFVF(device, OBJECT_VERTEX_TYPE);
for(mesh=0;mesh<obj->submesh_count;mesh++){
if(obj->submeshes[mesh].mat) set_material(device,obj->submeshes[mesh].mat);
IDirect3DDevice9_SetIndices(device,obj->submeshes[mesh].indexbuffer);
IDirect3DDevice9_DrawIndexedPrimitive(device, D3DPT_TRIANGLELIST, 0,0,obj->vertex_count, 0,obj->submeshes[mesh].triangle_count);
}
}
void draw_object_ex(IDirect3DDevice9 *device, object *obj, BOOL trans){
unsigned int mesh;
if(!device) return;
if(!obj) return;
if(obj->update){
vertex *dest;
generate_normals(obj);
IDirect3DVertexBuffer9_Lock(obj->vertexbuffer, 0, 0, (BYTE**)&dest, 0 );
memcpy(dest,obj->vertices,sizeof(vertex)*obj->vertex_count);
IDirect3DVertexBuffer9_Unlock(obj->vertexbuffer);
obj->update = FALSE;
}
IDirect3DDevice9_SetTransform( device, D3DTS_WORLD, (D3DMATRIX*)&obj->mat );
IDirect3DDevice9_SetStreamSource(device, 0, obj->vertexbuffer, 0, sizeof(vertex));
IDirect3DDevice9_SetFVF(device, OBJECT_VERTEX_TYPE);
for(mesh=0;mesh<obj->submesh_count;mesh++){
if(obj->submeshes[mesh].mat){
if(obj->submeshes[mesh].mat->additive==trans){
set_material(device,obj->submeshes[mesh].mat);
IDirect3DDevice9_SetIndices(device,obj->submeshes[mesh].indexbuffer);
IDirect3DDevice9_DrawIndexedPrimitive(device, D3DPT_TRIANGLELIST, 0,0,obj->vertex_count, 0,obj->submeshes[mesh].triangle_count);
}
}else{
if(!trans){
IDirect3DDevice9_SetIndices(device,obj->submeshes[mesh].indexbuffer);
IDirect3DDevice9_DrawIndexedPrimitive(device, D3DPT_TRIANGLELIST, 0,0,obj->vertex_count, 0,obj->submeshes[mesh].triangle_count);
}
}
}
}