Move util functions to util.c

Move vec2_t to util.h

src/util.c

@@ -0,0 +1,46 @@
+
+#include "include/util.h"
+#include "include/sdk.h"
+#include "include/globals.h"
+
+bool is_alive(cl_entity_t* ent) {
+    return ent && ent->curstate.movetype != 6 && ent->curstate.movetype != 0;
+}
+
+bool valid_client(cl_entity_t* ent) {
+    return is_alive(ent) && ent->index != localplayer->index;
+}
+
+char* get_name(int ent_idx) {
+    hud_player_info_t info;
+    i_engine->pfnGetPlayerInfo(ent_idx, &info);
+
+    return info.name;
+}
+
+bool vec_is_zero(vec3_t v) {
+    return v[0] == 0.0f && v[1] == 0.0f && v[2] == 0.0f;
+}
+
+bool world_to_screen(vec3_t vec, vec2_t screen) {
+    if (vec_is_zero(vec))
+        return false;
+
+    int engine_w2s = i_engine->pTriAPI->WorldToScreen(vec, screen);
+    if (engine_w2s)
+        return false;
+
+    SCREENINFO scr_inf;
+    scr_inf.iSize = sizeof(SCREENINFO);
+    i_engine->pfnGetScreenInfo(&scr_inf);
+
+    /* If within bounds, transform to screen scale */
+    if (screen[0] < 1 && screen[1] < 1 && screen[0] > -1 && screen[1] > -1) {
+        screen[0] = screen[0] * (scr_inf.iWidth / 2) + (scr_inf.iWidth / 2);
+        screen[1] = -screen[1] * (scr_inf.iHeight / 2) + (scr_inf.iHeight / 2);
+
+        return true;
+    }
+
+    return false;
+}