pyrite-dev/assaultfish
13
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

skybox

Browse source
This commit is contained in:
Nishi 2026-01-12 01:03:18 +09:00
commit 57685ed075
Signed by: nishi
GPG key ID: 27EF69B208EB9343
20 changed files with 282 additions and 13 deletions
Download patch file Download diff file Expand all files Collapse all files

129
engine/src/skybox.c Normal file
View file

@ -0,0 +1,129 @@
#include <GearBox/SkyBox.h>
#include <GearBox/GL.h>
#include <GearBox/String.h>
GBSkyBox GBSkyBoxOpen(GBClient client, const char* base) {
GBSkyBox skybox = malloc(sizeof(*skybox));
char* p;
void* ptr[12];
int i;
memset(skybox, 0, sizeof(*skybox));
skybox->engine = client->engine;
ptr[0] = &skybox->left;
ptr[1] = "/left.png";
ptr[2] = &skybox->right;
ptr[3] = "/right.png";
ptr[4] = &skybox->front;
ptr[5] = "/front.png";
ptr[6] = &skybox->back;
ptr[7] = "/back.png";
ptr[8] = &skybox->up;
ptr[9] = "/up.png";
ptr[10] = &skybox->down;
ptr[11] = "/down.png";
for(i = 0; i < 12; i += 2) {
p = GBStringConcat(base, ptr[i + 1]);
if(!GBGLTextureLoadFile(client->gl, ptr[i], NULL, NULL, p)) {
free(p);
GBSkyBoxClose(skybox);
return NULL;
}
free(p);
}
return skybox;
}
void GBSkyBoxDraw(GBSkyBox skybox) {
GBGL gl = skybox->engine->client->gl;
int i;
GBVector3 v[4];
GBVector2 t[4];
GBNumber s = 0.0001;
t[0][0] = 0, t[0][1] = 1;
t[1][0] = 0, t[1][1] = 0;
t[2][0] = 1, t[2][1] = 0;
t[3][0] = 1, t[3][1] = 1;
GBGLIgnoreDepth(gl);
GBGLShadowDisable(gl);
for(i = 0; i < 6; i++) {
GLuint tex;
int j, k;
if(i == 0) {
tex = skybox->front;
v[0][0] = -1 - s, v[0][1] = 1 + s, v[0][2] = -1;
v[1][0] = -1 - s, v[1][1] = -1 - s, v[1][2] = -1;
v[2][0] = 1 + s, v[2][1] = -1 - s, v[2][2] = -1;
v[3][0] = 1 + s, v[3][1] = 1 + s, v[3][2] = -1;
} else if(i == 1) {
tex = skybox->back;
v[0][0] = 1 + s, v[0][1] = 1 + s, v[0][2] = 1;
v[1][0] = 1 + s, v[1][1] = -1 - s, v[1][2] = 1;
v[2][0] = -1 - s, v[2][1] = -1 - s, v[2][2] = 1;
v[3][0] = -1 - s, v[3][1] = 1 + s, v[3][2] = 1;
} else if(i == 2) {
tex = skybox->left;
v[0][0] = -1, v[0][1] = 1 + s, v[0][2] = 1 + s;
v[1][0] = -1, v[1][1] = -1 - s, v[1][2] = 1 + s;
v[2][0] = -1, v[2][1] = -1 - s, v[2][2] = -1 - s;
v[3][0] = -1, v[3][1] = 1 + s, v[3][2] = -1 - s;
} else if(i == 3) {
tex = skybox->right;
v[0][0] = 1, v[0][1] = 1 + s, v[0][2] = -1 - s;
v[1][0] = 1, v[1][1] = -1 - s, v[1][2] = -1 - s;
v[2][0] = 1, v[2][1] = -1 - s, v[2][2] = 1 + s;
v[3][0] = 1, v[3][1] = 1 + s, v[3][2] = 1 + s;
} else if(i == 4) {
tex = skybox->up;
v[0][0] = -1 - s, v[0][1] = 1, v[0][2] = 1 + s;
v[1][0] = -1 - s, v[1][1] = 1, v[1][2] = -1 - s;
v[2][0] = 1 + s, v[2][1] = 1, v[2][2] = -1 - s;
v[3][0] = 1 + s, v[3][1] = 1, v[3][2] = 1 + s;
} else if(i == 5) {
tex = skybox->down;
v[0][0] = -1 - s, v[0][1] = -1, v[0][2] = -1 - s;
v[1][0] = -1 - s, v[1][1] = -1, v[1][2] = 1 + s;
v[2][0] = 1 + s, v[2][1] = -1, v[2][2] = 1 + s;
v[3][0] = 1 + s, v[3][1] = -1, v[3][2] = -1 - s;
}
for(j = 0; j < 4; j++) {
for(k = 0; k < 3; k++) {
v[j][k] *= GBGLMaxDistance / 2;
v[j][k] += gl->engine->client->camera[k];
}
}
GBGLTextureSet(gl, tex);
GBGLPolygon(gl, 4, v, t);
}
GBGLTextureSet(gl, 0);
GBGLShadowEnable(gl);
GBGLCareDepth(gl);
}
void GBSkyBoxClose(GBSkyBox skybox) {
if(skybox->left > 0) GBGLTextureDelete(skybox->engine->client->gl, skybox->left);
free(skybox);
}