Decompile overlay 1 (Part 3) (#95)

* ZeldaArrangeBinary OK

* ZeldaMapBinary 26%

* UnkStruct_SceneChange1 -> EntranceInfo

* cleanup EntranceInfo ctors

* fix regressions

* ZeldaMapBinary 47%

* fix regressions

* ZeldaMapBinary 73%

* ZeldaMapBinary 89%

* ZeldaMapBinary 99%

libs/nitro/include/nitro/math.h

@@ -53,7 +53,15 @@ extern "C" {
 #define MUL_FX32(a, b) (fx32)((((s64) (a)) * ((s64) (b)) + 0x800) >> FX32_SHIFT)
 #define DIV_FX32(a, b) (((a) << FX32_SHIFT) / (b))
 
+// some kind of angle conversion? only used for angle values so far
+#define MUL_FX32_FX64(a, b) (fx32)(((((a) * (b)) + 0x80000000000LL) >> 32))
+#define UNK_FX_OPERATION_1(a) (MUL_FX32_FX64((u64) (a), 0xB60B60B60BLL) >> FX32_SHIFT)
+
+#define MUL_FX32_U(a, b) (fx32)((((u64) (a)) * ((u64) (b)) + 0x800) >> FX32_SHIFT)
+#define UNK_FX_OPERATION_2(a) MUL_FX32_U((u64) (a), FLOAT_TO_FX32(1.2f))
+
 #define DEG_TO_ANG(n) ((n) * 0x10000 / 360)
+#define DEG_TO_ANG_ALT(n) DEG_TO_ANG((u64) (n))
 #define SIN(n) (gSinCosTable[2 * ((n) >> 4)])
 #define COS(n) (gSinCosTable[2 * ((n) >> 4) + 1])
 
@@ -82,6 +90,15 @@ static inline void Vec2p_Copy(const Vec2p *src, Vec2p *dst) {
 #endif
 }
 
+typedef union Vec2b {
+    struct {
+        /* 0 */ u8 x;
+        /* 4 */ u8 y;
+        /* 8 */
+    };
+    u8 coords[2];
+} Vec2b;
+
 typedef struct Mat2p {
     /* 00 */ Vec2p xColumn;
     /* 08 */ Vec2p yColumn;

libs/nitro/include/nitro/types.h

@@ -34,7 +34,7 @@ typedef volatile s8 vs8;
 typedef volatile f32 vf32;
 typedef volatile f64 vf64;
 
-typedef u32 BOOL;
+typedef s32 BOOL;
 
 #define ATTRIBUTE_ALIGN(x) __attribute__((aligned(x)))