I_CHRIS.CC¶

Deterministic source record. The complete textual file is reproduced below; this page does not replace architectural interpretation in the authored chapters.

File identity¶

Field	Value
Path	`GAMES/DOOM/I_CHRIS.CC`
Lines	62
Bytes	963
SHA-256	`2eb884878af9b88217e27e429db9f9e17df8f51903e7fe2b255d6f503db1df98`
ChrisOS revision	`da3df29cb397932c43d32373871fb9380e688ade`

Detected syntactic dependencies¶

Line	Include
—	No preprocessor include detected.

Detected symbols¶

Line	Symbol
10	`DG_SetWindowTitle`
14	`DG_Init`
29	`DG_DrawFrame`
33	`DG_SleepMs`
42	`DG_GetTicksMs`
47	`DG_GetKey`
57	`I_Sound_stub`
60	`I_Music_stub`

Complete source¶

The following block is the complete textual file at the recorded revision. No lines are elided, abbreviated or paraphrased.

/* doomgeneric-style backend for ChrisC / CLVM. Sound and net are stubs. */

int DG_ScreenW;
int DG_ScreenH;
char DG_Screen[64000];
char DG_Pal[768];
int DG_Ticks;
int DG_Running;

void DG_SetWindowTitle(char *title) {
  title = title;
}

void DG_Init() {
  int i;
  DG_ScreenW = 320;
  DG_ScreenH = 200;
  viewport(320, 200);
  i = 0;
  while (i < 768) {
    DG_Pal[i] = (char)((i / 3) & 255);
    i = i + 1;
  }
  setpal(DG_Pal);
  DG_Ticks = ticks();
  DG_Running = 1;
}

void DG_DrawFrame() {
  fb_blit(DG_Screen, DG_ScreenW, DG_ScreenH);
}

void DG_SleepMs(int ms) {
  int t;
  t = (ms * 60) / 1000;
  if (t < 1) {
    t = 1;
  }
  wait(t);
}

int DG_GetTicksMs() {
  return (ticks() * 1000) / 60;
}

/* doomgeneric polls this; Chris input uses I_StartTic → D_PostEvent instead. */
int DG_GetKey(int *pressed, int *key) {
  if (pressed) {
    *pressed = 0;
  }
  if (key) {
    *key = 0;
  }
  return 0;
}

void I_Sound_stub() {
}

void I_Music_stub() {
}

Role of this record¶

The atlas guarantees file-by-file traceability. Responsibility, invariants, ownership, concurrency, security, performance and subsystem interactions belong in authored chapters and must cite this file when applicable.