Flying: Difference between revisions

Flying (view source)

Revision as of 20:51, 3 August 2023

1,620 bytes added , 3 August 2023

this code is so indirect

Icecream17

188

edits

@@ Line 55: / Line 55: @@
 # finally, play the flying sound (adjust sound for speed)
 Notice that there is no code handling air steps for ledge grabbing or hanging on a ceiling, so such transitions are impossible.
+===update_flying===
+I am too lazy to describe the exact details of <code>update_flying</code>, so here is the code
+<syntaxhighlight lang="c">
+void update_flying(struct MarioState *m) {
+    UNUSED u8 filler[4];
+    update_flying_pitch(m);
+    update_flying_yaw(m);
+    m->forwardVel -= 2.0f * ((f32) m->faceAngle[0] / 0x4000) + 0.1f;
+    m->forwardVel -= 0.5f * (1.0f - coss(m->angleVel[1]));
+    if (m->forwardVel < 0.0f) {
+        m->forwardVel = 0.0f;
+    }
+    if (m->forwardVel > 16.0f) {
+        m->faceAngle[0] += (m->forwardVel - 32.0f) * 6.0f;
+    } else if (m->forwardVel > 4.0f) {
+        m->faceAngle[0] += (m->forwardVel - 32.0f) * 10.0f;
+    } else {
+        m->faceAngle[0] -= 0x400;
+    }
+    m->faceAngle[0] += m->angleVel[0];
+    if (m->faceAngle[0] > 0x2AAA) {
+        m->faceAngle[0] = 0x2AAA;
+    }
+    if (m->faceAngle[0] < -0x2AAA) {
+        m->faceAngle[0] = -0x2AAA;
+    }
+    m->vel[0] = m->forwardVel * coss(m->faceAngle[0]) * sins(m->faceAngle[1]);
+    m->vel[1] = m->forwardVel * sins(m->faceAngle[0]);
+    m->vel[2] = m->forwardVel * coss(m->faceAngle[0]) * coss(m->faceAngle[1]);
-I am too lazy to describe the exact details of <code>update_flying</code>, so here is the code
+    m->slideVelX = m->vel[0];
+    m->slideVelZ = m->vel[2];
+}
+</syntaxhighlight>
+Here are some tables summarizing the <code>approach_s32</code>, <code>update_flying_pitch</code>, and <code>update_flying_yaw</code> functions.
+{| class="wikitable"
+|+
+update_flying_pitch (target vel = -(stickX * (forwardVel / 5)))
+!
+!joystick is down (move up)
+!joystick is up (move down)
+!joystick is neutral
+|-
+|negative pitch velocity
+|add 64 vel, cap at 32
+| approach (at most 40 up or 20 down)
+|approach 0 (by at most 40)
+|-
+|positive pitch velocity
+| approach (at most 20 down or 40 up)
+|subtract 64 vel, cap at -32
+|approach 0 (by at most 40)
+|-
+|zero pitch velocity
+| approach (at most 20 down or 40 up)
+| approach (at most 40 up or 20 down)
+| approach 0 (by at most 40)
+|}
+{| class="wikitable"
+|+update_flying_yaw (target vel = -(stickY * (forwardVel / 4)))
+!
+!joystick is left
+!joystick is right
+!joystick is neutral
+|-
+|negative yaw velocity
+| add 64 vel, cap at 16
+|approach (at most 20 up or 10 down)
+|approach 0 (by at most 40)
+|-
+|positive yaw velocity
+| approach (at most 10 up or 20 down)
+| subtract 64 vel, cap at -16
+|approach 0 (by at most 40)
+|-
+|zero yaw velocity
+|approach (at most 10 up or 20 down)
+|approach (at most 20 up or 10 down)
+|approach 0 (by at most 40)
+|}
+After that, update_flying_yaw does:
+#Add yaw velocity to yaw
+# Set roll to yaw times negative twenty (-20)
+'''Note that turning left = positive yaw''' (up = positive pitch).<ref>https://youtu.be/TQt8MCsniQI</ref>
+As can be seen, many joystick positions will be equivalent, and the pitch velocity or yaw velocity change by at most 40.
+*
 <syntaxhighlight lang="c">
 /**
@@ Line 133: / Line 224: @@
          m->angleVel[0] = approach_s32(m->angleVel[0], 0, 0x40, 0x40);
      }
-}
-void update_flying(struct MarioState *m) {
-    UNUSED u8 filler[4];
-    update_flying_pitch(m);
-    update_flying_yaw(m);
-    m->forwardVel -= 2.0f * ((f32) m->faceAngle[0] / 0x4000) + 0.1f;
-    m->forwardVel -= 0.5f * (1.0f - coss(m->angleVel[1]));
-    if (m->forwardVel < 0.0f) {
-        m->forwardVel = 0.0f;
-    }
-    if (m->forwardVel > 16.0f) {
-        m->faceAngle[0] += (m->forwardVel - 32.0f) * 6.0f;
-    } else if (m->forwardVel > 4.0f) {
-        m->faceAngle[0] += (m->forwardVel - 32.0f) * 10.0f;
-    } else {
-        m->faceAngle[0] -= 0x400;
-    }
-    m->faceAngle[0] += m->angleVel[0];
-    if (m->faceAngle[0] > 0x2AAA) {
-        m->faceAngle[0] = 0x2AAA;
-    }
-    if (m->faceAngle[0] < -0x2AAA) {
-        m->faceAngle[0] = -0x2AAA;
-    }
-    m->vel[0] = m->forwardVel * coss(m->faceAngle[0]) * sins(m->faceAngle[1]);
-    m->vel[1] = m->forwardVel * sins(m->faceAngle[0]);
-    m->vel[2] = m->forwardVel * coss(m->faceAngle[0]) * coss(m->faceAngle[1]);
-    m->slideVelX = m->vel[0];
-    m->slideVelZ = m->vel[2];
 }
 </syntaxhighlight>
+==References==
+<references />
 {{Actions}}