Analog camera support. (#28)

* Implement analog camera.

* Change swimming camera to use R Look mode instead.

* More work on flight mode.

* Add extra updates to improve transitions between modes.

* Add flying camera and some bug fixes to target computation.

* Remove extra updates.

* Update analog_camera_patches.c

patches/graphics_patches.c

@@ -40,8 +40,10 @@ extern Vtx *sVtxStack[2];
 extern s32 sStackSelector;
 extern s32 gTextureFilterPoint;
 extern u32 heap_occupiedBytes;
+extern u32 dynamic_camera_target_index;
 
 extern void recomp_reset_skinning_stack();
+extern void recomp_advance_dynamic_camera_targets();
 
 // @recomp Patched to not free anything.
 RECOMP_PATCH void graphicsCache_release(void) {
@@ -89,6 +91,9 @@ RECOMP_PATCH void game_draw(s32 arg0){
     // @recomp Reset the high precision position skinning stack.
     recomp_reset_skinning_stack();
 
+    // @recomp Advance the frame used as reference by the dynamic camera target changes for analog camera.
+    recomp_advance_dynamic_camera_targets();
+
     // @recomp Track the original values.
     Mtx* mtx_start = mtx;
     Vtx* vtx_start = vtx;

patches/patches.h

@@ -31,6 +31,7 @@ void osWriteBackDCacheAll(void);
 #define osPiStartDma osPiStartDma_recomp
 #define sinf sinf_recomp
 #define cosf __cosf_recomp
+#define osContGetReadData osContGetReadData_recomp
 
 #include "ultra64.h"
 #pragma GCC diagnostic push

patches/syms.ld

@@ -40,3 +40,8 @@ recomp_xxh3 = 0x8F00008C;
 recomp_get_bgm_volume = 0x8F000090;
 sinf_recomp = 0x8F000094;
 __cosf_recomp = 0x8F000098;
+recomp_get_camera_inputs = 0x8F00009C;
+recomp_get_analog_cam_enabled = 0x8F0000A0;
+recomp_get_analog_inverted_axes = 0x8F0000A4;
+recomp_set_right_analog_suppressed = 0x8F0000A8;
+osContGetReadData_recomp = 0x8F0000AC;