[enhancement] Freecam (#56)

* Create noclip.c

* Create noclip.h

* Update camera.c

* Update render_courses.c

* Update ImguiUI.cpp

* Freecam Done

* Add smoothing to window

* Update freecam

* focus  player

* fix

* Update freecam.c

* Update freecam.h

* Update render_courses.c

* Update FreecamWindow.cpp

* Update Engine.cpp

* Move vars

---------

Co-authored-by: MegaMech <7255464+MegaMech@users.noreply.github.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/src/main.c b/src/main.c
index 414568181..de999c9f6 100644
--- a/src/main.c
+++ b/src/main.c
@@ -43,6 +43,7 @@
 #include "crash_screen.h"
 #include "buffers/gfx_output_buffer.h"
 #include <bridge/gfxdebuggerbridge.h>
+#include "enhancements/freecam/freecam.h"
 
 // Declarations (not in this file)
 void func_80091B78(void);
@@ -317,6 +318,29 @@ void create_gfx_task_structure(void) {
 #endif
 }
 
+f32 gDeltaTime = 0.0f;
+f32 calculate_delta_time(void) {
+    static u32 prevtime = 0;
+    u32 now = osGetCount();
+    f32 deltaTime;
+
+    if (now > prevtime) {
+        deltaTime = (f32)(now - prevtime) / OS_CPU_COUNTER;
+    } else {
+        // Handle counter reset
+        deltaTime = (f32)((0xffffffff - prevtime) + 1 + now) / OS_CPU_COUNTER;
+    }
+
+    prevtime = now;
+    
+    // Cap deltaTime to avoid large jumps (e.g., on pause/resume)
+    if (deltaTime > 1.0f / 15.0f) { // Assume 15 FPS is the lowest acceptable rate
+        deltaTime = 1.0f / 15.0f;
+    }
+
+    gDeltaTime = deltaTime;
+}
+
 void init_controllers(void) {
     osCreateMesgQueue(&gSIEventMesgQueue, &gSIEventMesgBuf[0], ARRAY_COUNT(gSIEventMesgBuf));
     osSetEventMesg(OS_EVENT_SI, &gSIEventMesgQueue, OS_MESG_32(0x33333333));
@@ -336,6 +360,11 @@ void update_controller(s32 index) {
         return;
     }
 
+    // Prevents pause menu intereference while controlling flycam
+    if ((CVarGetInteger("gFreecam", 0) == 1) && (gFreecamControllerType == 0) && (gGamestate == RACING)) {
+        return;
+    }
+
     controller->rawStickX = gControllerPads[index].stick_x;
     controller->rawStickY = gControllerPads[index].stick_y;
 
@@ -1226,6 +1255,8 @@ void thread5_game_loop(void) {
 }
 
 void thread5_iteration(void) {
+    // func_800CB2C4();
+    calculate_delta_time();
 #ifdef TARGET_N64
     while (true) {
         func_800CB2C4();