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floattext.cpp

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#include "nx.h"

#include "floattext.fdh"

FloatText *FloatText::first = NULL;

FloatText *FloatText::last = NULL;

void c------------------------------() {}

FloatText::FloatText(int sprite)

{

prev = NULL;

next = first;

if (first)

first->prev = this;

else

last = this;

first = this;

this->sprite = sprite;

Reset();

ObjectDestroyed = false;

}

FloatText::~FloatText()

{

if (this->next) this->next->prev = this->prev;

if (this->prev) this->prev->next = this->next;

if (this == first) first = first->next;

if (this == last) last = last->prev;

}

void FloatText::Reset()

{

this->state = FT_IDLE;

this->shownAmount = 0;

}

void c------------------------------() {}

// adds the spec'd amount of damage/energy to the object's point display

void FloatText::AddQty(int amt)

{

//stat("FloatText::AddQty(%d)", amt);

if (amt == 0) return;

// first add the damage to the total

if (this->state == FT_IDLE)

{

this->state = FT_RISE;

this->shownAmount = amt;

this->yoff = FT_Y_START;

this->timer = 0;

}

else

{

this->shownAmount += amt;

// if we're scrolling away jerk back down

if (this->state == FT_SCROLL_AWAY)

{

this->state = FT_HOLD;

this->yoff = FT_Y_HOLD;

}

// reset the timer which counts how long we stay in hold state

if (this->state != FT_RISE)

this->timer = 0;

}

if (this->shownAmount > 9999)

this->shownAmount = 9999; // overrun protection for buffer

}

// updates the position of a floattext in respect to it's object

void FloatText::UpdatePos(Object *assoc_object)

{

// get the center pixel of the object we're associated with

this->objX = (assoc_object->x >> CSF) + (sprites[assoc_object->sprite].w / 2);

this->objY = (assoc_object->y >> CSF) + (sprites[assoc_object->sprite].h / 2);

// adjust for possible draw point

SIFDir *dir = &sprites[assoc_object->sprite].frame[assoc_object->frame].dir[assoc_object->dir];

this->objX -= dir->drawpoint.x;

this->objY -= dir->drawpoint.y;

}

// moves and draws the given float text if need be

void FloatText::Draw()

{

FloatText *ft = this;

int x, y, i;

switch(ft->state)

{

// rise to top point, moving once every other frame

case FT_RISE:

{

ft->timer ^= 1;

if (ft->timer)

{

if (--ft->yoff <= FT_Y_HOLD)

{

ft->state = FT_HOLD;

ft->timer = 0;

}

break;

// hold at top for a moment

case FT_HOLD:

{

if (++ft->timer >= 42)

ft->state = FT_SCROLL_AWAY;

}

break;

// scroll away quickly and disappear

case FT_SCROLL_AWAY:

{

if (--ft->yoff <= FT_Y_RISEAWAY)

{

ft->state = FT_IDLE;

ft->shownAmount = 0;

ft->timer = 0;

return;

}

break;

}

// set the SDL clipping region to just above the hold point

// so it looks like it "rolls" away.

if (ft->state == FT_SCROLL_AWAY)

{

// this formula is confusing until you realize that FT_Y_HOLD is a negative number

int y = ((ft->objY - (map.displayed_yscroll >> CSF)) + FT_Y_HOLD);

int h = (SCREEN_HEIGHT - y);

set_clip_rect(0, y, SCREEN_WIDTH, h);

}

// render the damage amount into a string

char text[6] = { 10 };

sprintf(&text[1], "%d", ft->shownAmount);

for(i=1;text[i];i++) text[i] -= '0';

int textlen = i;

x = ft->objX - (textlen * (8 / 2)); // center the string on the object

y = ft->objY + ft->yoff;

// adjust to object's onscreen position

x -= (map.displayed_xscroll >> CSF);

y -= (map.displayed_yscroll >> CSF);

// draw the text char by char

for(i=0;i<textlen;i++)

{

draw_sprite(x, y, ft->sprite, text[i], 0);

x += 8;

}

if (ft->state == FT_SCROLL_AWAY)

clear_clip_rect();

}

bool FloatText::IsScrollingAway()

{

return (this->state == FT_SCROLL_AWAY);

}

void c------------------------------() {}

void FloatText::DrawAll(void)

{

FloatText *ft = first;

FloatText *nextft;

int count = 0;

while(ft)

{

nextft = ft->next;

if (ft->state != FT_IDLE)

{

ft->Draw();

}

else

{

if (ft->ObjectDestroyed)

delete ft;

}

ft = nextft;

count++;

}

// do NOT call this to remove all enemy's floattext from the map.

// for one thing, it could leave dangling invalid pointers.

// for another, it deletes the player->XPText, etc.

// instead, call ResetAll and let them clean themselves up.

void FloatText::DeleteAll(void)

{

while(first)

delete first;

}

void FloatText::ResetAll(void)

{

FloatText *ft = first;

while(ft)

{

ft->Reset();

ft = ft->next;

}