libultra cleanup (#215)

* cleanup libultra

* fixes

- use quotes instead of <> for includes
- add macros for zelda specific thread priorities
- fix Makefile
- properly format the remaining pfs structs

* fix button macros + add CHECK_BTN_ANY/CHECK_BTN_ALL

* remove ULTRA_ABS

* fix includes

* update z_player.c/z_lib.c + run format.sh

* merge upstream/master

* fix include in En_Goroiwa

* fix includes

1 files changed, 36 insertions, 0 deletions

diff --git a/src/libultra_code_O2/guPerspectiveF.c b/src/libultra_code_O2/guPerspectiveF.c
new file mode 100644
index 000000000..df69888cf
--- /dev/null
+++ b/src/libultra_code_O2/guPerspectiveF.c
@@ -0,0 +1,36 @@
+#include "global.h"
+
+void guPerspectiveF(f32 mf[4][4], u16* perspNorm, f32 fovy, f32 aspect, f32 near, f32 far, f32 scale) {
+    f32 yscale;
+    s32 row;
+    s32 col;
+    guMtxIdentF(mf);
+    fovy *= GU_PI / 180.0;
+    yscale = cosf(fovy / 2) / sinf(fovy / 2);
+    mf[0][0] = yscale / aspect;
+    mf[1][1] = yscale;
+    mf[2][2] = (near + far) / (near - far);
+    mf[2][3] = -1;
+    mf[3][2] = 2 * near * far / (near - far);
+    mf[3][3] = 0.0f;
+    for (row = 0; row < 4; row++) {
+        for (col = 0; col < 4; col++) {
+            mf[row][col] *= scale;
+        }
+    }
+    if (perspNorm != NULL) {
+        if (near + far <= 2.0) {
+            *perspNorm = 65535;
+        } else {
+            *perspNorm = (f64)(1 << 17) / (near + far);
+            if (*perspNorm <= 0) {
+                *perspNorm = 1;
+            }
+        }
+    }
+}
+void guPerspective(Mtx* m, u16* perspNorm, f32 fovy, f32 aspect, f32 near, f32 far, f32 scale) {
+    f32 mat[4][4];
+    guPerspectiveF(mat, perspNorm, fovy, aspect, near, far, scale);
+    guMtxF2L(mat, m);
+}