52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/**
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* Behavior for bhvSslMovingPyramidWall.
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*
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* This controls the moving walls found within Shifting Sand Land's pyramid.
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* Each wall starts at an initial position and moves up or down at a constant
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* speed.
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*/
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/**
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* Initialize the moving wall to be at one of three possible initial starting
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* positions.
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*/
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void bhv_ssl_moving_pyramid_wall_init(void) {
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switch (o->oBehParams2ndByte) {
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case PYRAMID_WALL_BP_POSITION_HIGH:
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break;
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case PYRAMID_WALL_BP_POSITION_MIDDLE:
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o->oPosY -= 256.0f;
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o->oTimer += 50;
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break;
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case PYRAMID_WALL_BP_POSITION_LOW:
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o->oPosY -= 512.0f;
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o->oAction = PYRAMID_WALL_ACT_MOVING_UP;
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break;
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}
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}
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/**
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* Move up or down at a constant velocity for a period of time, then switch to
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* do the other.
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*/
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void bhv_ssl_moving_pyramid_wall_loop(void) {
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switch (o->oAction) {
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case PYRAMID_WALL_ACT_MOVING_DOWN:
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o->oVelY = -5.12f;
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if (o->oTimer == 100)
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o->oAction = PYRAMID_WALL_ACT_MOVING_UP;
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break;
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case PYRAMID_WALL_ACT_MOVING_UP:
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o->oVelY = 5.12f;
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if (o->oTimer == 100)
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o->oAction = PYRAMID_WALL_ACT_MOVING_DOWN;
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break;
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}
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o->oPosY += o->oVelY;
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}
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