sa2: propeller_spring -> flying_spring, document flying spring and em level task

2026-10-28 09:43:38 +00:00 · 2026-05-27 00:59:34 +01:00
1 parent 978cf77612
commit 5efb59352f
@@ -234,7 +234,7 @@
    "clear_pipe.h": "c",
    "slowing_snow.h": "c",
    "handlers_ia_pipe_horn_sequences.h": "c",
-    "sky_canyon_init.h": "c",
+    "sky_canyon_level_task.h": "c",
    "mon.h": "c",
    "kura_kura.h": "c",
    "star.h": "c",
@@ -325,7 +325,7 @@
    "kubinaga.h": "c",
    "propeller.h": "c",
    "game_3.h": "c",
-    "propeller_spring.h": "c",
+    "flying_spring.h": "c",
    "sprite_data.h": "c",
    "game_2.h": "c",
    "palette_loader.h": "c",
@@ -3,20 +3,20 @@ Adv2,INTERACTABLES,65,20,,,,,
 32,0,8,6,SPECIAL_RING,0,0,0,0
 33,0,30,17,PLATFORM_SQUARE,0,-4,0,8
 33,0,13,17,PLATFORM_SQUARE,-4,0,8,0
-34,0,11,20,PROPELLER_SPRING,0,0,0,0
-34,0,22,16,PROPELLER_SPRING,0,0,0,0
+34,0,11,20,FLYING_SPRING,0,0,0,0
+34,0,22,16,FLYING_SPRING,0,0,0,0
 35,0,29,24,SPIKES__HIDING_UP,0,0,0,0
-35,0,13,24,PROPELLER_SPRING,0,0,0,0
-35,0,1,21,PROPELLER_SPRING,0,0,0,0
-36,0,11,25,PROPELLER_SPRING,0,0,0,0
-36,0,23,21,PROPELLER_SPRING,0,0,0,0
-37,0,2,26,PROPELLER_SPRING,0,0,0,0
-37,0,14,22,PROPELLER_SPRING,0,0,0,0
-37,0,26,26,PROPELLER_SPRING,0,0,0,0
+35,0,13,24,FLYING_SPRING,0,0,0,0
+35,0,1,21,FLYING_SPRING,0,0,0,0
+36,0,11,25,FLYING_SPRING,0,0,0,0
+36,0,23,21,FLYING_SPRING,0,0,0,0
+37,0,2,26,FLYING_SPRING,0,0,0,0
+37,0,14,22,FLYING_SPRING,0,0,0,0
+37,0,26,26,FLYING_SPRING,0,0,0,0
 42,0,12,30,GRIND_RAIL__START_AIR,-12,-3,24,3
-46,0,22,31,PROPELLER_SPRING,0,0,0,0
-47,0,1,29,PROPELLER_SPRING,0,0,0,0
-47,0,14,31,PROPELLER_SPRING,0,0,0,0
+46,0,22,31,FLYING_SPRING,0,0,0,0
+47,0,1,29,FLYING_SPRING,0,0,0,0
+47,0,14,31,FLYING_SPRING,0,0,0,0
 50,0,8,28,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,4,22
 50,0,8,24,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,24,4
 50,0,12,28,TOGGLE_PLAYER_LAYER__FOREGROUND,0,0,4,24
@@ -83,9 +83,9 @@ Adv2,INTERACTABLES,65,20,,,,,
 50,2,20,8,TOGGLE_PLAYER_LAYER__FOREGROUND,0,0,4,12
 51,2,30,2,SMALL_WINDMILL,15,0,0,0
 53,2,11,20,TOGGLE__GOAL,0,0,0,0
-27,3,29,31,PROPELLER_SPRING,0,0,0,0
-28,3,9,28,PROPELLER_SPRING,0,0,0,0
-28,3,21,31,PROPELLER_SPRING,0,0,0,0
+27,3,29,31,FLYING_SPRING,0,0,0,0
+28,3,9,28,FLYING_SPRING,0,0,0,0
+28,3,21,31,FLYING_SPRING,0,0,0,0
 29,3,17,24,RAMP,1,0,0,0
 31,3,16,12,WHIRLWIND__B,0,-12,12,12
 32,3,8,0,FAN__RIGHT,0,-12,12,12
@@ -228,8 +228,8 @@ Adv2,INTERACTABLES,65,20,,,,,
 23,7,12,28,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,4,16
 23,7,8,24,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,8,4
 24,7,22,16,SPRING__UP,0,0,0,0
-26,7,24,11,PROPELLER_SPRING,0,0,0,0
-27,7,4,3,PROPELLER_SPRING,0,0,0,0
+26,7,24,11,FLYING_SPRING,0,0,0,0
+27,7,4,3,FLYING_SPRING,0,0,0,0
 28,7,16,18,SPRING__BIG_UPRIGHT,1,0,0,0
 30,7,30,16,SMALL_WINDMILL,2,0,0,0
 35,7,18,28,SPRING__UP,0,0,0,0
@@ -246,20 +246,20 @@ Adv2,INTERACTABLES,65,20,,,,,
 29,8,18,8,SPIKES__HIDING_UP,0,0,0,0
 29,8,29,10,PROPELLER,0,0,0,0
 29,8,8,10,SPRING__BIG_UPLEFT,1,0,0,0
-32,8,2,17,PROPELLER_SPRING,0,0,0,0
-32,8,14,15,PROPELLER_SPRING,0,0,0,0
-32,8,26,19,PROPELLER_SPRING,0,0,0,0
-33,8,5,14,PROPELLER_SPRING,0,0,0,0
+32,8,2,17,FLYING_SPRING,0,0,0,0
+32,8,14,15,FLYING_SPRING,0,0,0,0
+32,8,26,19,FLYING_SPRING,0,0,0,0
+33,8,5,14,FLYING_SPRING,0,0,0,0
 33,8,24,14,FAN__RIGHT,0,-12,12,12
 37,8,16,10,SPRING__BIG_UPRIGHT,1,0,0,0
-10,9,11,31,PROPELLER_SPRING,0,0,0,0
+10,9,11,31,FLYING_SPRING,0,0,0,0
 10,9,28,19,SPECIAL_RING,0,0,0,0
-11,9,14,28,PROPELLER_SPRING,0,0,0,0
-12,9,6,28,PROPELLER_SPRING,0,0,0,0
-12,9,16,31,PROPELLER_SPRING,0,0,0,0
-20,9,13,27,PROPELLER_SPRING,0,0,0,0
-20,9,4,18,PROPELLER_SPRING,0,0,0,0
-20,9,13,8,PROPELLER_SPRING,0,0,0,0
+11,9,14,28,FLYING_SPRING,0,0,0,0
+12,9,6,28,FLYING_SPRING,0,0,0,0
+12,9,16,31,FLYING_SPRING,0,0,0,0
+20,9,13,27,FLYING_SPRING,0,0,0,0
+20,9,4,18,FLYING_SPRING,0,0,0,0
+20,9,13,8,FLYING_SPRING,0,0,0,0
 20,9,28,0,BOOSTER,0,0,0,0
 22,9,21,24,TOGGLE__CHECKPOINT,0,0,0,0
 22,9,21,0,TOGGLE__CHECKPOINT,0,0,0,0
@@ -283,7 +283,7 @@ Adv2,INTERACTABLES,65,20,,,,,
 38,9,2,12,BOOSTER,0,1,0,0
 38,9,8,26,WHIRLWIND__B,0,-14,12,28
 8,10,30,28,DASH_RING,1,0,0,0
-11,10,26,0,PROPELLER_SPRING,0,0,0,0
+11,10,26,0,FLYING_SPRING,0,0,0,0
 12,10,20,16,TOGGLE_PLAYER_LAYER__FOREGROUND,0,0,4,14
 12,10,16,16,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,4,14
 12,10,16,12,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,8,4
@@ -304,8 +304,8 @@ Adv2,INTERACTABLES,65,20,,,,,
 32,10,20,28,FAN__LEFT,-12,-12,12,12
 32,10,2,16,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,4,12
 32,10,20,30,SPIKES__NORMAL_RIGHT,0,0,0,0
-34,10,26,30,PROPELLER_SPRING,0,0,0,0
-35,10,6,31,PROPELLER_SPRING,0,0,0,0
+34,10,26,30,FLYING_SPRING,0,0,0,0
+35,10,6,31,FLYING_SPRING,0,0,0,0
 36,10,21,28,RAMP,1,0,0,0
 37,10,23,23,SMALL_WINDMILL,1,0,0,0
 37,10,16,7,TOGGLE_PLAYER_LAYER__FOREGROUND,0,0,12,4
@@ -326,8 +326,8 @@ Adv2,INTERACTABLES,65,20,,,,,
 25,11,26,20,SPRING__UP,2,0,0,0
 26,11,2,8,BOOSTER,0,0,0,0
 30,11,18,15,SMALL_WINDMILL,15,0,0,0
-32,11,31,3,PROPELLER_SPRING,0,0,0,0
-34,11,22,6,PROPELLER_SPRING,0,0,0,0
+32,11,31,3,FLYING_SPRING,0,0,0,0
+34,11,22,6,FLYING_SPRING,0,0,0,0
 8,12,30,30,DASH_RING,0,0,0,0
 10,12,31,0,RAMP,1,0,0,0
 12,12,16,12,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,4,14
@@ -350,9 +350,9 @@ Adv2,INTERACTABLES,65,20,,,,,
 26,12,20,12,TOGGLE_PLAYER_LAYER__FOREGROUND,0,0,4,24
 30,12,24,29,TOGGLE_PLAYER_LAYER__FOREGROUND,0,0,4,4
 30,12,20,29,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,4,4
-31,12,13,25,PROPELLER_SPRING,0,0,0,0
-31,12,27,27,PROPELLER_SPRING,0,0,0,0
-32,12,8,25,PROPELLER_SPRING,0,0,0,0
+31,12,13,25,FLYING_SPRING,0,0,0,0
+31,12,27,27,FLYING_SPRING,0,0,0,0
+32,12,8,25,FLYING_SPRING,0,0,0,0
 32,12,28,24,BOUNCY_SPRING,0,0,0,0
 8,13,4,21,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,4,4
 8,13,8,16,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,24,4
@@ -2,10 +2,10 @@ Adv2,INTERACTABLES,80,19,,,,,
 40,0,9,24,TOGGLE__CHECKPOINT,0,0,0,0
 40,0,9,0,TOGGLE__CHECKPOINT,0,0,0,0
 40,1,9,16,TOGGLE__CHECKPOINT,0,0,0,0
-63,1,30,30,PROPELLER_SPRING,0,0,0,0
-64,1,14,23,PROPELLER_SPRING,0,0,0,0
-64,1,6,16,PROPELLER_SPRING,0,0,0,0
-64,1,15,9,PROPELLER_SPRING,0,0,0,0
+63,1,30,30,FLYING_SPRING,0,0,0,0
+64,1,14,23,FLYING_SPRING,0,0,0,0
+64,1,6,16,FLYING_SPRING,0,0,0,0
+64,1,15,9,FLYING_SPRING,0,0,0,0
 64,1,28,1,SPECIAL_RING,0,0,0,0
 65,1,16,16,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,4,13
 65,1,20,16,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,24,4
@@ -17,14 +17,14 @@ Adv2,INTERACTABLES,80,19,,,,,
 58,2,28,20,GRIND_RAIL__END_ALTERNATE,-6,-3,12,3
 59,2,5,20,RAMP,1,0,0,0
 62,2,14,20,SMALL_WINDMILL,1,0,0,0
-63,2,21,30,PROPELLER_SPRING,0,0,0,0
-63,2,26,15,PROPELLER_SPRING,0,0,0,0
-63,2,20,5,PROPELLER_SPRING,0,0,0,0
-64,2,14,27,PROPELLER_SPRING,0,0,0,0
-64,2,3,23,PROPELLER_SPRING,0,0,0,0
-64,2,17,12,PROPELLER_SPRING,0,0,0,0
-64,2,21,0,PROPELLER_SPRING,0,0,0,0
-64,2,10,4,PROPELLER_SPRING,0,0,0,0
+63,2,21,30,FLYING_SPRING,0,0,0,0
+63,2,26,15,FLYING_SPRING,0,0,0,0
+63,2,20,5,FLYING_SPRING,0,0,0,0
+64,2,14,27,FLYING_SPRING,0,0,0,0
+64,2,3,23,FLYING_SPRING,0,0,0,0
+64,2,17,12,FLYING_SPRING,0,0,0,0
+64,2,21,0,FLYING_SPRING,0,0,0,0
+64,2,10,4,FLYING_SPRING,0,0,0,0
 67,2,28,18,SPRING__LEFT,2,0,0,0
 67,2,19,8,TOGGLE_PLAYER_LAYER__FOREGROUND,0,0,4,13
 40,3,9,0,TOGGLE__CHECKPOINT,0,0,0,0
@@ -35,9 +35,9 @@ Adv2,INTERACTABLES,80,19,,,,,
 60,3,0,12,GRIND_RAIL__START_GROUND,-12,-3,24,3
 62,3,30,24,SPRING__UP,0,0,0,0
 62,3,8,24,GRIND_RAIL__END_ALTERNATE,-12,-3,24,3
-63,3,20,14,PROPELLER_SPRING,0,0,0,0
-64,3,2,8,PROPELLER_SPRING,0,0,0,0
-64,3,16,13,PROPELLER_SPRING,0,0,0,0
+63,3,20,14,FLYING_SPRING,0,0,0,0
+64,3,2,8,FLYING_SPRING,0,0,0,0
+64,3,16,13,FLYING_SPRING,0,0,0,0
 65,3,20,10,SPRING__RIGHT,2,0,0,0
 65,3,25,0,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,4,13
 68,3,11,24,TOGGLE__GOAL,0,0,0,0
@@ -109,8 +109,8 @@ Adv2,INTERACTABLES,80,19,,,,,
 49,7,31,17,PLATFORM_B,0,0,0,0
 49,7,25,17,PLATFORM_B,0,0,0,0
 49,7,19,17,PLATFORM_B,0,0,0,0
-52,7,25,9,PROPELLER_SPRING,0,0,0,0
-53,7,3,7,PROPELLER_SPRING,0,0,0,0
+52,7,25,9,FLYING_SPRING,0,0,0,0
+53,7,3,7,FLYING_SPRING,0,0,0,0
 54,7,6,28,BOOSTER,0,0,0,0
 54,7,20,31,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,4,21
 55,7,0,31,TOGGLE_PLAYER_LAYER__FOREGROUND,0,0,4,9
@@ -123,10 +123,10 @@ Adv2,INTERACTABLES,80,19,,,,,
 60,7,24,4,FAN__LEFT,-12,-24,12,24
 60,7,0,4,GRIND_RAIL__END_GROUND,-12,-3,24,3
 25,8,4,30,SPRING__RIGHT,3,0,0,0
-29,8,25,13,PROPELLER_SPRING,0,0,0,0
-29,8,13,16,PROPELLER_SPRING,0,0,0,0
-30,8,29,5,PROPELLER_SPRING,0,0,0,0
-31,8,9,1,PROPELLER_SPRING,0,0,0,0
+29,8,25,13,FLYING_SPRING,0,0,0,0
+29,8,13,16,FLYING_SPRING,0,0,0,0
+30,8,29,5,FLYING_SPRING,0,0,0,0
+31,8,9,1,FLYING_SPRING,0,0,0,0
 35,8,16,21,TOGGLE_PLAYER_LAYER__FOREGROUND,0,0,4,19
 35,8,12,16,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,4,16
 36,8,20,8,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,4,14
@@ -178,9 +178,9 @@ Adv2,INTERACTABLES,80,19,,,,,
 54,9,1,16,DASH_RING,2,0,0,0
 55,9,31,30,SPRING__SMALL_UPRIGHT,3,0,0,0
 57,9,30,12,SPRING__UP,3,0,0,0
-22,10,29,29,PROPELLER_SPRING,0,0,0,0
-22,10,17,22,PROPELLER_SPRING,0,0,0,0
-22,10,22,13,PROPELLER_SPRING,0,0,0,0
+22,10,29,29,FLYING_SPRING,0,0,0,0
+22,10,17,22,FLYING_SPRING,0,0,0,0
+22,10,22,13,FLYING_SPRING,0,0,0,0
 22,10,28,4,FAN__RIGHT,0,-12,12,12
 24,10,9,22,PLATFORM_SQUARE,0,-1,0,2
 25,10,12,16,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,4,12
@@ -216,7 +216,7 @@ Adv2,INTERACTABLES,80,19,,,,,
 41,10,8,8,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,9,4
 41,10,4,4,TOGGLE_PLAYER_LAYER__BACKGROUND,0,0,4,8
 41,10,15,16,SPRING__UP,3,0,0,0
-42,10,12,9,PROPELLER_SPRING,0,0,0,0
+42,10,12,9,FLYING_SPRING,0,0,0,0
 43,10,19,16,BOOSTER,0,0,0,0
 53,10,6,4,SPRING__UP,0,0,0,0
 25,11,24,3,TOGGLE_PLAYER_LAYER__FOREGROUND,0,0,4,13
@@ -89,7 +89,7 @@
 #define IA__PROPELLER                       82
 #define IA__SLIDY_ICE                       83
 #define IA__SMALL_WINDMILL                  84
-#define IA__PROPELLER_SPRING                85
+#define IA__FLYING_SPRING                   85
 #define IA__WHIRLWIND__A                    86
 #define IA__FAN__LEFT                       87
 #define IA__FAN__RIGHT                      88
@@ -8,10 +8,10 @@
 typedef struct {
    /* 0x00 */ Sprite spring;
    /* 0x30 */ Sprite propellor;
-    /* 0x60 */ u16 unk60;
-    /* 0x62 */ u16 unk62;
-} Sprite_OnInit_SkyCanyon;
+    /* 0x60 */ u16 visibleFlyingSprings;
+    /* 0x62 */ u16 visiblePropellers;
+} SkyCanyonLevelTask;

-Task *sub_80807CC(void);
+Task *CreateLevelTask_SkyCanyon(void);

 #endif
@@ -39,7 +39,7 @@ typedef struct {
    /* 0x0E|0x10 */ CamCoord prevCamY;
    /* 0x10|0x14 */ u8 SA2_LABEL(unk14);
 #if (GAME == GAME_SA2)
-    /* 0x18|0x18 */ Task *preInit;
+    /* 0x18|0x18 */ Task *levelTask;
 #endif
 } EntitiesManager;
 extern Task *gEntitiesManagerTask;
@@ -275,7 +275,7 @@ SECTIONS
        src/game/sa2/stage/interactables/techno_base/light_globe.o(.text);
        src/game/sa2/stage/interactables/sky_canyon/propeller.o(.text);
        src/game/sa2/stage/interactables/sky_canyon/small_windmill.o(.text);
-        src/game/sa2/stage/interactables/sky_canyon/propeller_spring.o(.text);
+        src/game/sa2/stage/interactables/sky_canyon/flying_spring.o(.text);
        src/game/sa2/stage/interactables/sky_canyon/whirlwind.o(.text);
        src/game/sa2/stage/interactables/sky_canyon/fan.o(.text);
        src/game/sa2/stage/interactables/egg_utopia/launcher.o(.text);
@@ -286,7 +286,7 @@ SECTIONS
        src/game/sa2/stage/interactables/egg_utopia/speeding_platform.o(.text);
        src/game/sa2/stage/interactables/egg_utopia/gravity_toggle.o(.text);
        src/game/sa2/stage/interactables/collect_rings_lap_trigger.o(.text);
-        src/game/sa2/stage/interactables/sky_canyon_init.o(.text);
+        src/game/sa2/stage/interactables/sky_canyon_level_task.o(.text);
        src/game/sa2/stage/interactables/105.o(.text);
        src/game/sa2/stage/interactables/note_particle.o(.text);
        src/game/sa2/stage/interactables/special_ring.o(.text);
@@ -0,0 +1,295 @@
+#include "global.h"
+
+#include "trig.h"
+#include "lib/m4a/m4a.h"
+
+#include "game/shared/stage/entities_manager.h"
+
+#include "game/sa2/stage/interactables/sky_canyon/flying_spring.h"
+#include "game/sa2/stage/interactables/sky_canyon_level_task.h"
+
+#include "game/sa2/stage/player_controls.h"
+#include "game/shared/stage/player.h"
+#include "game/shared/stage/camera.h"
+
+#include "constants/sa2/player_transitions.h"
+#include "constants/sa2/songs.h"
+
+#define STATE_JUMPED    2
+#define STATE_MOVING_UP 1
+
+typedef struct {
+    SpriteBase base;
+    Sprite sprite;
+    s32 x;
+    s32 y;
+    s16 qOffsetX;
+    s16 qOffsetY;
+    u8 state;
+    u8 step;
+} Sprite_FlyingSpring;
+
+static bool32 sub_807C424(Sprite_FlyingSpring *);
+static void sub_807C4A0(Sprite_FlyingSpring *);
+static bool32 sub_807C598(Sprite_FlyingSpring *);
+static void sub_807C5E0(Sprite_FlyingSpring *);
+static void UpdateSharedFlyingSpringAnimation(void);
+static void RenderFlyingSpring(Sprite_FlyingSpring *);
+static void TaskDestructor_Interactable085(Task *);
+static void sub_807C52C(Sprite_FlyingSpring *);
+static void sub_807C4EC(Sprite_FlyingSpring *);
+static Sprite *GetSharedFlyingSpringSprite(void);
+
+static void Task_Interactable085(void)
+{
+    Sprite_FlyingSpring *flyingSpring = TASK_DATA(gCurTask);
+    flyingSpring->qOffsetY = SIN_24_8(flyingSpring->step * 4) * 2;
+    flyingSpring->step += 2;
+    if (sub_807C424(flyingSpring)) {
+        sub_807C4A0(flyingSpring);
+    }
+
+    if (sub_807C598(flyingSpring)) {
+        sub_807C5E0(flyingSpring);
+    } else {
+        UpdateSharedFlyingSpringAnimation();
+        RenderFlyingSpring(flyingSpring);
+    }
+}
+
+static void sub_807C2E0(void)
+{
+    s16 r1;
+    Sprite_FlyingSpring *flyingSpring = TASK_DATA(gCurTask);
+    flyingSpring->qOffsetY = SIN_24_8(flyingSpring->step * 4) * 16;
+    sub_807C52C(flyingSpring);
+
+    r1 = (64 - flyingSpring->step) >> 2;
+
+    if (r1 > 3) {
+        if (r1 > 6) {
+            r1 = 6;
+        }
+    } else {
+#ifndef NON_MATCHING
+        do
+            r1 = 4;
+        while (0);
+#else
+        r1 = 4;
+#endif
+    }
+    flyingSpring->step += r1;
+    if (flyingSpring->step >= 64) {
+        sub_807C4EC(flyingSpring);
+    }
+    UpdateSharedFlyingSpringAnimation();
+    RenderFlyingSpring(flyingSpring);
+}
+
+static void sub_807C504(Sprite_FlyingSpring *);
+
+static void sub_807C360(void)
+{
+    Sprite_FlyingSpring *flyingSpring = TASK_DATA(gCurTask);
+    flyingSpring->step += 8;
+    if (flyingSpring->step == 128) {
+        sub_807C504(flyingSpring);
+    } else if (flyingSpring->step > 128) {
+        flyingSpring->qOffsetY = SIN_24_8(flyingSpring->step * 4) * 6;
+    } else {
+        flyingSpring->qOffsetY = SIN_24_8(flyingSpring->step * 4) * 3;
+    }
+
+    UpdateSharedFlyingSpringAnimation();
+    RenderFlyingSpring(flyingSpring);
+}
+
+static void sub_807C3DC(Sprite_FlyingSpring *flyingSpring)
+{
+    if (gPlayer.frameInput & gPlayerControls.jump) {
+        if (!(flyingSpring->state & STATE_JUMPED)) {
+            if (!(flyingSpring->state & STATE_MOVING_UP)) {
+                flyingSpring->state |= STATE_MOVING_UP;
+            } else {
+                flyingSpring->state &= ~STATE_MOVING_UP;
+                flyingSpring->state |= STATE_JUMPED;
+            }
+        }
+    }
+}
+
+static bool32 sub_807C424(Sprite_FlyingSpring *flyingSpring)
+{
+    s16 springScreenX, playerScreenX, sprintScreenY, playerScreenY;
+    if (gPlayer.moveState & 0x80 || gPlayer.qSpeedAirY <= 0) {
+        return FALSE;
+    }
+
+    springScreenX = flyingSpring->x - gCamera.x;
+    sprintScreenY = flyingSpring->y - gCamera.y;
+    playerScreenX = I(gPlayer.qWorldX) - gCamera.x;
+    playerScreenY = I(gPlayer.qWorldY) - gCamera.y;
+    if (springScreenX - 20 <= playerScreenX && springScreenX + 20 >= playerScreenX) {
+        if (sprintScreenY - 12 <= playerScreenY && sprintScreenY + 12 >= playerScreenY) {
+            return TRUE;
+        }
+    }
+
+    return FALSE;
+}
+
+static void sub_807C4A0(Sprite_FlyingSpring *flyingSpring)
+{
+    gPlayer.transition = PLTRANS_PROPELLER_SPRING;
+    if (flyingSpring->state & 1)
+        gPlayer.qSpeedAirY = -Q(5.5);
+    else
+        gPlayer.qSpeedAirY = -Q(5.5);
+    flyingSpring->step = 0;
+    flyingSpring->state = 0;
+    m4aSongNumStart(SE_284);
+    gCurTask->main = sub_807C2E0;
+}
+
+static void sub_807C6E4(void);
+
+static void sub_807C4EC(Sprite_FlyingSpring *flyingSpring)
+{
+    flyingSpring->step = 0;
+    gCurTask->main = sub_807C6E4;
+}
+
+static void sub_807C504(Sprite_FlyingSpring *flyingSpring)
+{
+    flyingSpring->qOffsetX = 0;
+    flyingSpring->qOffsetY = 0;
+    flyingSpring->step = 0;
+    gCurTask->main = Task_Interactable085;
+}
+
+static void sub_807C52C(Sprite_FlyingSpring *flyingSpring)
+{
+    if (gPlayer.frameInput & gPlayerControls.jump) {
+        flyingSpring->state |= STATE_JUMPED;
+    }
+}
+
+static void RenderFlyingSpring(Sprite_FlyingSpring *flyingSpring)
+{
+    Sprite *sprite = GetSharedFlyingSpringSprite();
+    sprite->x = flyingSpring->x - gCamera.x + I(flyingSpring->qOffsetX);
+    sprite->y = flyingSpring->y - gCamera.y + I(flyingSpring->qOffsetY);
+
+    DisplaySprite(sprite);
+}
+
+static bool32 sub_807C598(Sprite_FlyingSpring *flyingSpring)
+{
+    s32 springScreenX, springScreenY;
+    s16 x, y;
+    springScreenX = flyingSpring->x;
+    springScreenX -= gCamera.x;
+    springScreenY = flyingSpring->y;
+    springScreenY -= gCamera.y;
+
+    x = springScreenX;
+    y = springScreenY;
+    if (x < -(CAM_REGION_WIDTH / 2) || x > (DISPLAY_WIDTH + (CAM_REGION_WIDTH / 2)) || y < -(CAM_REGION_WIDTH / 2)
+        || y > (DISPLAY_HEIGHT + (CAM_REGION_WIDTH / 2))) {
+        return TRUE;
+    }
+
+    return FALSE;
+}
+
+static void sub_807C5E0(Sprite_FlyingSpring *flyingSpring)
+{
+    flyingSpring->base.me->x = flyingSpring->base.meX;
+    TaskDestroy(gCurTask);
+}
+
+static Sprite *GetSharedFlyingSpringSprite(void)
+{
+    EntitiesManager *em = TASK_DATA(TASK_PARENT(gCurTask));
+    SkyCanyonLevelTask *level = TASK_DATA(em->levelTask);
+    return &level->spring;
+}
+
+static void UpdateSharedFlyingSpringAnimation(void)
+{
+    EntitiesManager *em = TASK_DATA(TASK_PARENT(gCurTask));
+    SkyCanyonLevelTask *level = TASK_DATA(em->levelTask);
+
+    level->visibleFlyingSprings++;
+}
+
+void CreateEntity_PropellerSpring(MapEntity *me, u16 spriteRegionX, u16 spriteRegionY, u8 spriteY)
+{
+    Task *t = TaskCreate(Task_Interactable085, sizeof(Sprite_FlyingSpring), 0x2010, 0, TaskDestructor_Interactable085);
+    Sprite_FlyingSpring *flyingSpring = TASK_DATA(t);
+    flyingSpring->x = TO_WORLD_POS(me->x, spriteRegionX);
+    flyingSpring->y = TO_WORLD_POS(me->y, spriteRegionY);
+
+    flyingSpring->qOffsetX = 0;
+    flyingSpring->qOffsetY = 0;
+    flyingSpring->step = 0;
+
+    flyingSpring->base.regionX = spriteRegionX;
+    flyingSpring->base.regionY = spriteRegionY;
+    flyingSpring->base.me = me;
+    flyingSpring->base.meX = me->x;
+    flyingSpring->base.id = spriteY;
+    SET_MAP_ENTITY_INITIALIZED(me);
+}
+
+static void sub_807C72C(Sprite_FlyingSpring *);
+
+static void sub_807C6E4(void)
+{
+    Sprite_FlyingSpring *flyingSpring = TASK_DATA(gCurTask);
+    sub_807C3DC(flyingSpring);
+
+    if (++flyingSpring->step > 0) {
+        sub_807C72C(flyingSpring);
+    }
+
+    UpdateSharedFlyingSpringAnimation();
+    RenderFlyingSpring(flyingSpring);
+}
+
+static void TaskDestructor_Interactable085(Task *t)
+{
+    // unused
+}
+
+static void sub_807C744(void);
+
+static void sub_807C72C(Sprite_FlyingSpring *flyingSpring)
+{
+    flyingSpring->step = 64;
+    gCurTask->main = sub_807C744;
+}
+
+static void sub_807C7A0(Sprite_FlyingSpring *);
+
+static void sub_807C744(void)
+{
+    Sprite_FlyingSpring *flyingSpring = TASK_DATA(gCurTask);
+    flyingSpring->qOffsetY = SIN_24_8(flyingSpring->step * 4) * 16;
+    sub_807C3DC(flyingSpring);
+
+    flyingSpring->step += 8;
+    if ((s8)flyingSpring->step < 0) {
+        sub_807C7A0(flyingSpring);
+    }
+
+    UpdateSharedFlyingSpringAnimation();
+    RenderFlyingSpring(flyingSpring);
+}
+
+static void sub_807C7A0(Sprite_FlyingSpring *flyingSpring)
+{
+    flyingSpring->step = 128;
+    gCurTask->main = sub_807C360;
+}
@@ -13,7 +13,7 @@
 #include "game/shared/stage/camera.h"

 #include "game/sa2/stage/interactables/sky_canyon/propeller.h"
-#include "game/sa2/stage/interactables/sky_canyon_init.h"
+#include "game/sa2/stage/interactables/sky_canyon_level_task.h"

 #include "constants/sa2/animations.h"
 #include "constants/sa2/char_states.h"
@@ -43,7 +43,7 @@ static void Render(Sprite_Propeller *);
 static void StartPlayerFloatingTask(Sprite_Propeller *);
 static bool32 ShouldDespawn(Sprite_Propeller *);
 static void DestroyPropeller(Sprite_Propeller *);
-Sprite_OnInit_SkyCanyon *sub_807BA54(void);
+SkyCanyonLevelTask *sub_807BA54(void);
 static void TaskDestructor_GiantPropeller(Task *);
 static bool32 sub_807B9F0(Sprite_Propeller *);

@@ -314,18 +314,18 @@ static void DestroyPropeller(Sprite_Propeller *propeller)
    TaskDestroy(gCurTask);
 }

-Sprite_OnInit_SkyCanyon *sub_807BA54(void)
+SkyCanyonLevelTask *sub_807BA54(void)
 {
    EntitiesManager *em = TASK_DATA(TASK_PARENT(gCurTask));
-    return TASK_DATA(em->preInit);
+    return TASK_DATA(em->levelTask);
 }

 static void sub_807BA70(void)
 {
    EntitiesManager *em = TASK_DATA(TASK_PARENT(gCurTask));
-    Sprite_OnInit_SkyCanyon *level = TASK_DATA(em->preInit);
+    SkyCanyonLevelTask *level = TASK_DATA(em->levelTask);

-    level->unk62++;
+    level->visiblePropellers++;
 }

 void CreateEntity_Propeller(MapEntity *me, u16 spriteRegionX, u16 spriteRegionY, u8 spriteY)
@@ -1,293 +0,0 @@
-#include "global.h"
-
-#include "trig.h"
-#include "lib/m4a/m4a.h"
-
-#include "game/shared/stage/entities_manager.h"
-
-#include "game/sa2/stage/interactables/sky_canyon/propeller_spring.h"
-#include "game/sa2/stage/interactables/sky_canyon_init.h"
-
-#include "game/sa2/stage/player_controls.h"
-#include "game/shared/stage/player.h"
-#include "game/shared/stage/camera.h"
-
-#include "constants/sa2/player_transitions.h"
-#include "constants/sa2/songs.h"
-
-typedef struct {
-    SpriteBase base;
-    Sprite sprite;
-    s32 unk3C;
-    s32 unk40;
-    s16 unk44;
-    s16 unk46;
-    u8 unk48;
-    u8 unk49;
-} Sprite_IA85;
-
-static bool32 sub_807C424(Sprite_IA85 *);
-static void sub_807C4A0(Sprite_IA85 *);
-static bool32 sub_807C598(Sprite_IA85 *);
-static void sub_807C5E0(Sprite_IA85 *);
-static void sub_807C614(void);
-static void sub_807C558(Sprite_IA85 *);
-static void TaskDestructor_Interactable085(Task *);
-
-static void Task_Interactable085(void)
-{
-    Sprite_IA85 *ia85 = TASK_DATA(gCurTask);
-    ia85->unk46 = SIN_24_8(ia85->unk49 * 4) * 2;
-    ia85->unk49 += 2;
-    if (sub_807C424(ia85)) {
-        sub_807C4A0(ia85);
-    }
-
-    if (sub_807C598(ia85)) {
-        sub_807C5E0(ia85);
-    } else {
-        sub_807C614();
-        sub_807C558(ia85);
-    }
-}
-
-static void sub_807C52C(Sprite_IA85 *);
-static void sub_807C4EC(Sprite_IA85 *);
-
-static void sub_807C2E0(void)
-{
-    s16 r1;
-    Sprite_IA85 *ia85 = TASK_DATA(gCurTask);
-    ia85->unk46 = SIN_24_8(ia85->unk49 * 4) * 16;
-    sub_807C52C(ia85);
-
-    r1 = (0x40 - ia85->unk49) >> 2;
-
-    if (r1 > 3) {
-        if (r1 > 6) {
-            r1 = 6;
-        }
-    } else {
-#ifndef NON_MATCHING
-        do
-            r1 = 4;
-        while (0);
-#else
-        r1 = 4;
-#endif
-    }
-    ia85->unk49 += r1;
-    if (ia85->unk49 > 63) {
-        sub_807C4EC(ia85);
-    }
-    sub_807C614();
-    sub_807C558(ia85);
-}
-
-static void sub_807C504(Sprite_IA85 *);
-
-static void sub_807C360(void)
-{
-    Sprite_IA85 *ia85 = TASK_DATA(gCurTask);
-    ia85->unk49 += 8;
-    if (ia85->unk49 == 0x80) {
-        sub_807C504(ia85);
-    } else if (ia85->unk49 > 0x80) {
-        ia85->unk46 = SIN_24_8(ia85->unk49 * 4) * 6;
-    } else {
-        ia85->unk46 = SIN_24_8(ia85->unk49 * 4) * 3;
-    }
-
-    sub_807C614();
-    sub_807C558(ia85);
-}
-
-static void sub_807C3DC(Sprite_IA85 *ia85)
-{
-    if (gPlayer.frameInput & gPlayerControls.jump) {
-        if (!(ia85->unk48 & 2)) {
-            if (!(ia85->unk48 & 1)) {
-                ia85->unk48 |= 1;
-            } else {
-                ia85->unk48 &= ~0x1;
-                ia85->unk48 |= 2;
-            }
-        }
-    }
-}
-
-static bool32 sub_807C424(Sprite_IA85 *ia85)
-{
-    s16 temp, temp2, temp3, temp4;
-    if (gPlayer.moveState & 0x80 || gPlayer.qSpeedAirY <= 0) {
-        return 0;
-    }
-
-    temp = ia85->unk3C - gCamera.x;
-    temp3 = ia85->unk40 - gCamera.y;
-    temp2 = I(gPlayer.qWorldX) - gCamera.x;
-    temp4 = I(gPlayer.qWorldY) - gCamera.y;
-    if (temp - 0x14 <= temp2 && temp + 0x14 >= temp2) {
-        if (temp3 - 0xC <= temp4 && temp3 + 0xC >= temp4) {
-            return 1;
-        }
-    }
-
-    return 0;
-}
-
-static void sub_807C4A0(Sprite_IA85 *ia85)
-{
-    gPlayer.transition = PLTRANS_PROPELLER_SPRING;
-    if (ia85->unk48 & 1)
-        gPlayer.qSpeedAirY = -Q(5.5);
-    else
-        gPlayer.qSpeedAirY = -Q(5.5);
-    ia85->unk49 = 0;
-    ia85->unk48 = 0;
-    m4aSongNumStart(SE_284);
-    gCurTask->main = sub_807C2E0;
-}
-
-static void sub_807C6E4(void);
-
-static void sub_807C4EC(Sprite_IA85 *ia85)
-{
-    ia85->unk49 = 0;
-    gCurTask->main = sub_807C6E4;
-}
-
-static void sub_807C504(Sprite_IA85 *ia85)
-{
-    ia85->unk44 = 0;
-    ia85->unk46 = 0;
-    ia85->unk49 = 0;
-    gCurTask->main = Task_Interactable085;
-}
-
-static void sub_807C52C(Sprite_IA85 *ia85)
-{
-    if (gPlayer.frameInput & gPlayerControls.jump) {
-        ia85->unk48 |= 2;
-    }
-}
-
-static Sprite *sub_807C5F8(void);
-
-static void sub_807C558(Sprite_IA85 *ia85)
-{
-    Sprite *sprite = sub_807C5F8();
-    sprite->x = ia85->unk3C - gCamera.x + I(ia85->unk44);
-    sprite->y = ia85->unk40 - gCamera.y + I(ia85->unk46);
-
-    DisplaySprite(sprite);
-}
-
-static bool32 sub_807C598(Sprite_IA85 *ia85)
-{
-    s32 temp1, temp;
-    s16 temp2, temp3;
-    temp1 = ia85->unk3C;
-    temp1 -= gCamera.x;
-    temp = ia85->unk40;
-    temp -= gCamera.y;
-
-    temp2 = temp1;
-    temp3 = temp;
-    if (temp2 < -128 || temp2 > (DISPLAY_WIDTH + 128) || temp3 < -128 || temp3 > (DISPLAY_HEIGHT + 128)) {
-        return 1;
-    }
-
-    return 0;
-}
-
-static void sub_807C5E0(Sprite_IA85 *ia85)
-{
-    ia85->base.me->x = ia85->base.meX;
-    TaskDestroy(gCurTask);
-}
-
-static Sprite *sub_807C5F8(void)
-{
-    EntitiesManager *em = TASK_DATA(TASK_PARENT(gCurTask));
-    Sprite_OnInit_SkyCanyon *level = TASK_DATA(em->preInit);
-    return &level->spring;
-}
-
-static void sub_807C614(void)
-{
-    EntitiesManager *em = TASK_DATA(TASK_PARENT(gCurTask));
-    Sprite_OnInit_SkyCanyon *level = TASK_DATA(em->preInit);
-
-    level->unk60++;
-}
-
-void CreateEntity_PropellerSpring(MapEntity *me, u16 spriteRegionX, u16 spriteRegionY, u8 spriteY)
-{
-    Task *t = TaskCreate(Task_Interactable085, sizeof(Sprite_IA85), 0x2010, 0, TaskDestructor_Interactable085);
-    Sprite_IA85 *ia85 = TASK_DATA(t);
-    ia85->unk3C = TO_WORLD_POS(me->x, spriteRegionX);
-    ia85->unk40 = TO_WORLD_POS(me->y, spriteRegionY);
-
-    ia85->unk44 = 0;
-    ia85->unk46 = 0;
-    ia85->unk49 = 0;
-
-    ia85->base.regionX = spriteRegionX;
-    ia85->base.regionY = spriteRegionY;
-    ia85->base.me = me;
-    ia85->base.meX = me->x;
-    ia85->base.id = spriteY;
-    SET_MAP_ENTITY_INITIALIZED(me);
-}
-
-static void sub_807C72C(Sprite_IA85 *);
-
-static void sub_807C6E4(void)
-{
-    Sprite_IA85 *ia85 = TASK_DATA(gCurTask);
-    sub_807C3DC(ia85);
-
-    if (++ia85->unk49 > 0) {
-        sub_807C72C(ia85);
-    }
-
-    sub_807C614();
-    sub_807C558(ia85);
-}
-
-static void TaskDestructor_Interactable085(Task *t)
-{
-    // unused
-}
-
-static void sub_807C744(void);
-
-static void sub_807C72C(Sprite_IA85 *ia85)
-{
-    ia85->unk49 = 0x40;
-    gCurTask->main = sub_807C744;
-}
-
-static void sub_807C7A0(Sprite_IA85 *);
-
-static void sub_807C744(void)
-{
-    Sprite_IA85 *ia85 = TASK_DATA(gCurTask);
-    ia85->unk46 = SIN_24_8(ia85->unk49 * 4) * 16;
-    sub_807C3DC(ia85);
-
-    ia85->unk49 += 8;
-    if ((s8)ia85->unk49 < 0) {
-        sub_807C7A0(ia85);
-    }
-
-    sub_807C614();
-    sub_807C558(ia85);
-}
-
-static void sub_807C7A0(Sprite_IA85 *ia85)
-{
-    ia85->unk49 = 0x80;
-    gCurTask->main = sub_807C360;
-}
@@ -2,26 +2,20 @@
 #include "sprite.h"
 #include "task.h"

-#include "game/sa2/stage/interactables/sky_canyon_init.h"
+#include "game/sa2/stage/interactables/sky_canyon_level_task.h"

 #include "constants/sa2/animations.h"

-static void Task_80808DC(void);
+static void Task_UpdateAnimations(void);

-/* sub_80807CC is pointed to by 'gSpriteTileInits_PreStageEntry' inside collision.s
- * Which itself is referenced by 'CreateStageEntitiesManager'
- * It is called on stage-entry of ONLY Sky Canyon Acts 1 & 2,
- * the other pointers inside 'gSpriteTileInits_PreStageEntry' are empty.
- */
-
-Task *sub_80807CC(void)
+Task *CreateLevelTask_SkyCanyon(void)
 {
-    Task *t = TaskCreate(Task_80808DC, sizeof(Sprite_OnInit_SkyCanyon), 0x2001, 0, NULL);
-    Sprite_OnInit_SkyCanyon *init = TASK_DATA(t);
+    Task *t = TaskCreate(Task_UpdateAnimations, sizeof(SkyCanyonLevelTask), 0x2001, 0, NULL);
+    SkyCanyonLevelTask *init = TASK_DATA(t);
    Sprite *spring, *propellor;

-    init->unk60 = 0;
-    init->unk62 = 0;
+    init->visibleFlyingSprings = 0;
+    init->visiblePropellers = 0;

    spring = &init->spring;
    SPRITE_INIT_WITHOUT_ANIM_OR_VRAM(spring, 18, 2, 0);
@@ -40,17 +34,17 @@ Task *sub_80807CC(void)
    return t;
 }

-static void Task_80808DC(void)
+static void Task_UpdateAnimations(void)
 {
-    Sprite_OnInit_SkyCanyon *init = TASK_DATA(gCurTask);
+    SkyCanyonLevelTask *init = TASK_DATA(gCurTask);

-    if (init->unk60) {
+    if (init->visibleFlyingSprings != 0) {
        UpdateSpriteAnimation(&init->spring);
    }
-    init->unk60 = 0;
+    init->visibleFlyingSprings = 0;

-    if (init->unk62 != 0) {
+    if (init->visiblePropellers != 0) {
        UpdateSpriteAnimation(&init->propellor);
    }
-    init->unk62 = 0;
+    init->visiblePropellers = 0;
 }
@@ -68,7 +68,7 @@
 #include "game/sa2/stage/interactables/sky_canyon/fan.h"
 #include "game/sa2/stage/interactables/sky_canyon/small_windmill.h"
 #include "game/sa2/stage/interactables/sky_canyon/whirlwind.h"
-#include "game/sa2/stage/interactables/sky_canyon/propeller_spring.h"
+#include "game/sa2/stage/interactables/sky_canyon/flying_spring.h"

 #include "game/sa2/stage/interactables/techno_base/light_globe.h"
 #include "game/sa2/stage/interactables/techno_base/light_bridge.h"
@@ -88,7 +88,7 @@
 #include "game/sa2/stage/interactables/105.h"
 #include "game/sa2/stage/interactables/special_ring.h"
 #include "game/sa2/stage/interactables/collect_rings_lap_trigger.h"
-#include "game/sa2/stage/interactables/sky_canyon_init.h"
+#include "game/sa2/stage/interactables/sky_canyon_level_task.h"

 #include "game/sa2/stage/mystery_itembox.h"

@@ -800,16 +800,23 @@ const MapEntityInit gSpriteInits_CollectRingsInteractables[] = {
 };

 #ifndef COLLECT_RINGS_ROM
-const StagePreInitFunc gSpriteTileInits_PreStageEntry[] = {
-    NULL,        NULL,        NULL, NULL, // Leaf Forest
-    NULL,        NULL,        NULL, NULL, // Hot Crater
-    NULL,        NULL,        NULL, NULL, // Music Plant
-    NULL,        NULL,        NULL, NULL, // Ice Paradise
-    sub_80807CC, sub_80807CC, NULL, NULL, // Sky Canyon
-    NULL,        NULL,        NULL, NULL, // Techno Base
-    NULL,        NULL,        NULL, NULL, // Egg Utopia
-    NULL,        NULL,        NULL, NULL, // Final Zone
-    NULL,        NULL,
+const StagePreInitFunc sLevelTaskInits[] = {
+    // Leaf Forest
+    NULL, NULL, NULL, NULL,
+    // Hot Crater
+    NULL, NULL, NULL, NULL,
+    // Music Plant
+    NULL, NULL, NULL, NULL,
+    // Ice Paradise
+    NULL, NULL, NULL, NULL,
+    // Sky Canyon
+    CreateLevelTask_SkyCanyon, CreateLevelTask_SkyCanyon, NULL, NULL,
+    // Techno Base
+    NULL, NULL, NULL, NULL,
+    // Egg Utopia
+    NULL, NULL, NULL, NULL,
+    // Final Zone
+    NULL, NULL, NULL, NULL, NULL, NULL
 };
 #endif
 #endif
@@ -842,10 +849,10 @@ void CreateStageEntitiesManager(void)
        em->enemies = decompBuf;

 #if (GAME == GAME_SA2)
-        em->preInit = NULL;
+        em->levelTask = NULL;

-        if (gSpriteTileInits_PreStageEntry[gCurrentLevel]) {
-            em->preInit = gSpriteTileInits_PreStageEntry[gCurrentLevel]();
+        if (sLevelTaskInits[gCurrentLevel]) {
+            em->levelTask = sLevelTaskInits[gCurrentLevel]();
        }
 #endif
    } else {