Merge branch 'master' of https://gitlab.com/banjo.decomp/banjo-kazooie

src/core2/ba/flap.c

@@ -0,0 +1,103 @@
+#include <ultra64.h>
+#include "functions.h"
+#include "variables.h"
+
+/* .bss */
+u8 s_active;
+f32 s_flap_max_timer;
+f32 s_flap_list[5];
+
+/* .code */
+
+/**
+ * @brief returns the number of nonzero flap timers in `s_flap_list`
+ * 
+ * @return s32 number of active flaps
+ */
+s32 baflap_getCount(void) {
+    s32 i;
+    s32 cnt;
+
+    cnt = 0;
+    for(i = 0; i < 5; i++){
+        if(s_flap_list[i] != 0.0f){
+            cnt++;
+        }
+    }
+    return cnt;
+}
+
+/**
+ * @brief add a flap duration to the flap list
+ * 
+ * @param duration duration of flap in seconds
+ * @return true if baflap duration was extended
+ * @return false if baflap does not extend duration or all timers in flap queue are occupied
+ */
+bool baflap_add(f32 duration) {
+    s32 i;
+
+    // check that timer is far enough away from any value
+    for(i = 0; i < 5; i++){
+        if(duration - 0.25 < s_flap_list[i]){
+            s_flap_max_timer = duration;
+            return FALSE;
+        }
+    }
+    // add to list
+    for(i = 0; i < 5; i++){
+        if (s_flap_list[i] == 0.0f) {
+            s_flap_list[i] = duration;
+            return TRUE;
+        }
+    }
+    s_flap_max_timer = duration;
+    return FALSE;
+}
+
+/**
+ * @brief zeros all flap timers and sets as inactive
+ * 
+ */
+void baflap_reset(void) {
+    s32 i;
+
+    for(i = 0; i < 5; i++){
+        s_flap_list[i] = 0.0f;
+    }
+    s_active = s_flap_max_timer = 0.0f;
+}
+
+/**
+ * @brief activates or deactivates flap timers
+ * 
+ * @param active false (0) or true (!0)
+ */
+void baflap_activate(bool active){
+    s_active = active;
+    if(!s_active){
+        baflap_reset();
+    }
+}
+
+/**
+ * @brief updates flap timers if active
+ * 
+ */
+void baflap_update(void) {
+    f32 temp_f0;
+    s32 i;
+
+    if (s_active != 0) {
+        //update timers
+        for(i = 0; i < 5; i++){
+            func_80259430(&s_flap_list[i]);
+        }
+        if (s_flap_max_timer != 0.0f) {
+            temp_f0 = s_flap_max_timer;
+            s_flap_max_timer = 0.0f;
+            baflap_add(temp_f0);
+        }
+    }
+}
+