sm64

A Super Mario 64 decompilation
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ttc_pit_block.inc.c (2094B)

      1 
      2 /**
      3  * Behavior for bhvTTCPitBlock. This is the block that moves up and down near the
      4  * Pit and the Pendulum star.
      5  */
      6 
      7 /**
      8  * Collision models. The second one is unused.
      9  */
     10 static Collision const *sTTCPitBlockCollisionModels[] = {
     11     ttc_seg7_collision_07015754,
     12     ttc_seg7_collision_070157D8,
     13 };
     14 
     15 /**
     16  * The speed of movement, and the time to wait before moving.
     17  * If the wait time is negative (before moving down on random setting), wait
     18  * a random amount of time instead.
     19  */
     20 struct TTCPitBlockProperties {
     21     s16 speed;
     22     s16 waitTime;
     23 };
     24 
     25 /**
     26  * Properties for the pit block on each speed setting when moving up and down,
     27  * respectively.
     28  */
     29 static struct TTCPitBlockProperties sTTCPitBlockProperties[][2] = {
     30     /* TTC_SPEED_SLOW    */ { { 11, 20 }, { -9, 30 } },
     31     /* TTC_SPEED_FAST    */ { { 18, 15 }, { -11, 15 } },
     32     /* TTC_SPEED_RANDOM  */ { { 11, 20 }, { -9, -1 } },
     33     /* TTC_SPEED_STOPPED */ { { 0, 0 }, { 0, 0 } },
     34 };
     35 
     36 /**
     37  * Init function for bhvTTCPitBlock.
     38  */
     39 void bhv_ttc_pit_block_init(void) {
     40     o->collisionData = segmented_to_virtual(sTTCPitBlockCollisionModels[o->oBhvParams2ndByte]);
     41 
     42     o->oTTCPitBlockPeakY = o->oPosY + 330.0f;
     43 
     44     if (gTTCSpeedSetting == TTC_SPEED_STOPPED) {
     45         o->oPosY += 330.0f;
     46     }
     47 }
     48 
     49 /**
     50  * Update function for bhvTTCPitBlock.
     51  * Move up and down, pausing before changing direction.
     52  */
     53 void bhv_ttc_pit_block_update(void) {
     54     if (o->oTimer > o->oTTCPitBlockWaitTime) {
     55         // Forward vel and gravity are zero, so this just does posY += velY
     56         cur_obj_move_using_fvel_and_gravity();
     57 
     58         if (clamp_f32(&o->oPosY, o->oHomeY, o->oTTCPitBlockPeakY)) {
     59             o->oTTCPitBlockDir = o->oTTCPitBlockDir ^ 0x01;
     60 
     61             if ((o->oTTCPitBlockWaitTime =
     62                      sTTCPitBlockProperties[gTTCSpeedSetting][o->oTTCPitBlockDir & 0x01].waitTime)
     63                 < 0) {
     64                 o->oTTCPitBlockWaitTime = random_mod_offset(10, 20, 6);
     65             }
     66 
     67             o->oVelY = sTTCPitBlockProperties[gTTCSpeedSetting][o->oTTCPitBlockDir].speed;
     68             o->oTimer = 0;
     69         }
     70     }
     71 }