62 lines
No EOL
1.9 KiB
C
62 lines
No EOL
1.9 KiB
C
/*
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
Boston, MA 02110-1301, USA.
|
|
|
|
---
|
|
Copyright (C) 2010, Lukas Weber <laochailan@web.de>
|
|
*/
|
|
|
|
#include "animation.h"
|
|
#include "global.h"
|
|
|
|
#include <assert.h>
|
|
|
|
void init_animation(Animation *buf, int rows, int cols, int speed, const char *filename) {
|
|
buf->rows = rows;
|
|
buf->cols = cols;
|
|
|
|
buf->speed = speed;
|
|
|
|
load_texture(filename,&buf->tex);
|
|
buf->w = buf->tex.w/cols;
|
|
buf->h = buf->tex.h/rows;
|
|
}
|
|
|
|
void draw_animation(int x, int y, int row, Animation *ani) {
|
|
glEnable(GL_TEXTURE_2D);
|
|
glBindTexture(GL_TEXTURE_2D, ani->tex.gltex);
|
|
|
|
float s = (float)ani->tex.w/ani->cols/ani->tex.truew;
|
|
float t = ((float)ani->tex.h)/ani->tex.trueh;
|
|
|
|
assert(ani->speed != 0);
|
|
glColor4f(1,1,1,1);
|
|
glBegin(GL_QUADS);
|
|
glTexCoord2f(s*(global.frames/ani->speed % ani->cols),row/(float)ani->rows*t);
|
|
glVertex3f(x - ani->w/2, y - ani->h/2, 0.0f);
|
|
|
|
glTexCoord2f(s*(global.frames/ani->speed % ani->cols),(row+1)/(float)ani->rows*t);
|
|
glVertex3f(x - ani->w/2, y + ani->h/2, 0.0f);
|
|
|
|
glTexCoord2f(s*(global.frames/ani->speed % ani->cols+1),(row+1)/(float)ani->rows*t);
|
|
glVertex3f(x + ani->w/2, y + ani->h/2, 0.0f);
|
|
|
|
glTexCoord2f(s*(global.frames/ani->speed % ani->cols+1),row/(float)ani->rows*t);
|
|
glVertex3f(x + ani->w/2, y - ani->h/2, 0.0f);
|
|
glEnd();
|
|
glDisable(GL_TEXTURE_2D);
|
|
|
|
}
|
|
|