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tetris.patch
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diff -ruN xscreensaver-5.26.orig/hacks/config/tetris.xml xscreensaver-5.26/hacks/config/tetris.xml
--- xscreensaver-5.26.orig/hacks/config/tetris.xml 1970-01-01 01:00:00.000000000 +0100
+++ xscreensaver-5.26/hacks/config/tetris.xml 2013-10-14 21:52:38.000000000 +0200
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+
+<screensaver name="tetris" _label="Tetris" gl="yes">
+
+ <command arg="-root"/>
+
+ <number id="delay" type="slider" arg="-delay %"
+ _label="Frame rate" _low-label="Low" _high-label="High"
+ low="0" high="100000" default="20000"
+ convert="invert"/>
+
+ <boolean id="showfps" _label="Show frame rate" arg-set="-fps"/>
+
+ <_description>
+Tetris !!
+
+Written by Vivien HENRIET; 2013.
+ </_description>
+</screensaver>
diff -ruN xscreensaver-5.26.orig/hacks/glx/Makefile.in xscreensaver-5.26/hacks/glx/Makefile.in
--- xscreensaver-5.26.orig/hacks/glx/Makefile.in 2013-07-16 11:23:33.000000000 +0200
+++ xscreensaver-5.26/hacks/glx/Makefile.in 2013-10-11 14:49:14.000000000 +0200
@@ -117,7 +117,7 @@
hilbert.c companion.c companion_quad.c companion_disc.c \
companion_heart.c tronbit.c tronbit_idle1.c tronbit_idle2.c \
tronbit_no.c tronbit_yes.c jwzgles.c kaleidocycle.c \
- quasicrystal.c unknownpleasures.c geodesic.c
+ quasicrystal.c unknownpleasures.c geodesic.c tetris.c
OBJS = xscreensaver-gl-helper.o normals.o glxfonts.o fps-gl.o \
atlantis.o b_draw.o b_lockglue.o b_sphere.o bubble3d.o \
@@ -157,7 +157,7 @@
hilbert.o companion.o companion_quad.o companion_disc.o \
companion_heart.o tronbit.o tronbit_idle1.o tronbit_idle2.o \
tronbit_no.o tronbit_yes.o jwzgles.o kaleidocycle.o \
- quasicrystal.o unknownpleasures.o geodesic.o
+ quasicrystal.o unknownpleasures.o geodesic.o tetris.o
GL_EXES = cage gears moebius pipes sproingies stairs superquadrics \
morph3d rubik atlantis lament bubble3d glplanet pulsar \
@@ -173,7 +173,7 @@
juggler3d topblock glschool glcells voronoi moebiusgears \
lockward cubicgrid hypnowheel skytentacles jigsaw photopile \
rubikblocks surfaces hilbert companioncube tronbit \
- kaleidocycle quasicrystal unknownpleasures geodesic
+ kaleidocycle quasicrystal unknownpleasures geodesic tetris
GLE_EXES = extrusion
SUID_EXES = sonar
GL_UTIL_EXES = xscreensaver-gl-helper
@@ -229,7 +229,7 @@
hypnowheel.man skytentacles.man sonar.man jigsaw.man \
photopile.man rubikblocks.man surfaces.man hilbert.man \
companioncube.man tronbit.man kaleidocycle.man \
- quasicrystal.man unknownpleasures.man geodesic.man
+ quasicrystal.man unknownpleasures.man geodesic.man tetris.man
MEN = @GL_MEN@
RETIRED_MEN = glforestfire.man
EXTRAS = README Makefile.in dxf2gl.pl vrml2gl.pl wfront2gl.pl \
@@ -689,6 +689,10 @@
stonerview: stonerview.o $(STONER_OBJS) $(HACK_TRACK_OBJS)
$(CC_HACK) -o $@ [email protected] $(STONER_OBJS) $(HACK_TRACK_OBJS) $(HACK_LIBS)
+tetris: tetris.o $(DB_OBJS)
+ $(CC_HACK) -o $@ [email protected] $(DB_OBJS) $(HACK_LIBS)
+
+
molecules.h:
@echo "building molecules.h from $(HACK_SRC)/images/molecules/*.pdb"; \
##############################################################################
#
diff -ruN xscreensaver-5.26.orig/hacks/glx/tetris.c xscreensaver-5.26/hacks/glx/tetris.c
--- xscreensaver-5.26.orig/hacks/glx/tetris.c 1970-01-01 01:00:00.000000000 +0100
+++ xscreensaver-5.26/hacks/glx/tetris.c 2013-10-14 22:39:23.000000000 +0200
@@ -0,0 +1,1007 @@
+/* tetris, Copyright (c) 2013 Vivien HENRIET <[email protected]>
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ */
+
+#include "screenhackI.h"
+#include "config.h"
+
+#include <stdarg.h>
+#include <limits.h>
+#include "xlockmore.h"
+#include "tetris.h"
+
+#define DEFAULTS "*delay: 00000 \n" \
+ "*showFPS: True \n" \
+
+# define refresh_tetris 0
+
+ENTRYPOINT ModeSpecOpt tetris_opts = {0, NULL, 0, NULL, NULL};
+
+static tetrisstruct *tetris=NULL;
+
+static int count_holes_shadowed(int stack[WIDTH][HEIGHT])
+{
+ int i,j;
+ int nb_shadow=0;
+ for (i=0; i<WIDTH; i++, j=0)
+ {
+ while (!stack[i][j] && j<HEIGHT)
+ {
+ j++;
+ }
+ for (; j<HEIGHT; j++)
+ {
+ if (!stack[i][j])
+ {
+ nb_shadow++;
+ }
+ }
+ }
+ return nb_shadow;
+}
+
+static int count_stack_height(int stack[WIDTH][HEIGHT], t_piece *piece)
+{
+ int i, j, k;
+ int height=0;
+ if (piece->i < 0)
+ {
+ k=0;
+ }
+ else
+ {
+ k=piece->i;
+ }
+
+ for (j=0; j<HEIGHT; j++)
+ {
+ for (i=0; (i<4)&&((i+k)<WIDTH); i++)
+ {
+ if (stack[i+k][j])
+ {
+ if
+ (
+ (piece->i > 0) &&
+ (
+ piece->blocks[i][0] ||
+ piece->blocks[i][1] ||
+ piece->blocks[i][2] ||
+ piece->blocks[i][3]
+ )
+ )
+ {
+ return (HEIGHT-j);
+ }
+ else if
+ (
+ piece->blocks[i-piece->i][0] ||
+ piece->blocks[i-piece->i][1] ||
+ piece->blocks[i-piece->i][2] ||
+ piece->blocks[i-piece->i][3]
+ )
+ {
+ return (HEIGHT-j);
+ }
+ }
+ }
+ }
+ return height;
+}
+
+static int count_well_depth(int stack[WIDTH][HEIGHT])
+{
+ int i, j, k;
+ int depth=0;
+
+ for (j=0; j<HEIGHT; j++)
+ {
+ if (!stack[0][j] && stack[1][j])
+ {
+ depth++;
+ for (k=j+1; k<HEIGHT; k++)
+ {
+ if (!stack[0][k] && stack[1][k])
+ {
+ depth++;
+ }
+ }
+ }
+ }
+
+ for (i=1; i<WIDTH-1; i++)
+ {
+ for (j=0; j<HEIGHT; j++)
+ {
+ if (!stack[i][j] && stack[i-1][j] && stack[i+1][j])
+ {
+ depth++;
+ for (k=j+1; k<HEIGHT; k++)
+ {
+ if (!stack[i][k] && stack[i-1][k] && stack[i+1][k])
+ {
+ depth++;
+ }
+ }
+ }
+ }
+ }
+
+ for (j=0; j<HEIGHT; j++)
+ {
+ if (!stack[WIDTH-1][j] && stack[WIDTH-2][j])
+ {
+ depth++;
+ for (k=j+1; k<HEIGHT; k++)
+ {
+ if (!stack[WIDTH-1][k] && stack[WIDTH-2][k])
+ {
+ depth++;
+ }
+ }
+ }
+ }
+
+ return depth;
+}
+
+static int count_line_transition(int stack[WIDTH][HEIGHT])
+{
+ int transition=0;
+ int i,j;
+
+ for (j=0; j<HEIGHT-1; j++)
+ {
+ for (i=0; i<WIDTH; i++)
+ {
+ if (stack[i][j] && !stack[i][j+1])
+ {
+ transition++;
+ }
+ }
+ }
+
+ for (i=0; i<WIDTH; i++)
+ {
+ if (!stack[i][HEIGHT-1])
+ {
+ transition++;
+ }
+ }
+
+ return transition;
+}
+
+static int count_row_transition(int stack[WIDTH][HEIGHT])
+{
+ int transition=0;
+ int i,j;
+
+ for (j=0; j<HEIGHT; j++)
+ {
+ if (!stack[0][j])
+ {
+ transition++;
+ }
+ }
+
+ for (i=0; i<WIDTH-1; i++)
+ {
+ for (j=0; j<HEIGHT; j++)
+ {
+ if (stack[i][j] && !stack[i+1][j])
+ {
+ transition++;
+ }
+ }
+ }
+
+ for (j=0; j<HEIGHT; j++)
+ {
+ if (!stack[WIDTH-1][j])
+ {
+ transition++;
+ }
+ }
+
+ return transition;
+}
+
+/*
+ * LANDING_HEIGHT -1 landing height
+ * ERODED_PIECE_CELLS 1 eroded piece cells
+ * ROW_TRANSITIONS -1 row transitions
+ * COLUMN_TRANSITIONS -1 column transitions
+ * HOLES -4 holes
+ * WELL_SUMS_DELLACHERIE -1 for each well, a value depending on the well depth
+ */
+
+static int compute_score(tetrisstruct *env, t_piece *piece)
+{
+ int score;
+ int eroded_pieces;
+
+ eroded_pieces = fix_piece(env, piece, 1);
+
+ score = -1 * count_stack_height(env->tmp_stack, piece);
+ score += 1 * eroded_pieces;
+ score += -1 * count_row_transition(env->tmp_stack);
+ score += -1 * count_line_transition(env->tmp_stack);
+ score += -4 * count_holes_shadowed(env->tmp_stack);
+ score += -1 * count_well_depth(env->tmp_stack);
+
+ return score;
+}
+
+static void compute_best_move(tetrisstruct *env, t_move *best_move)
+{
+ t_piece current_piece, next_piece;
+ int rotation, translation = 0;
+ int current_score, best_score;
+
+ current_piece.i = env->current_piece.i;
+ current_piece.j = env->current_piece.j;
+ memcpy(current_piece.blocks, env->current_piece.blocks, sizeof(current_piece.blocks));
+
+ next_piece.i=env->next_piece.i;
+ next_piece.j=env->next_piece.j;
+ memcpy(next_piece.blocks, env->next_piece.blocks, sizeof(next_piece.blocks));
+
+ best_score=INT_MIN;
+ /* try rotation */
+ for (rotation=0; rotation<4; rotation++)
+ {
+ /* start in the left side */
+ while (!move(env->stack, ¤t_piece, LEFT));
+ /* try all move to RIGHT */
+ do
+ {
+ while (!move(env->stack, ¤t_piece, DOWN));
+
+ next_piece.i=current_piece.i;
+ next_piece.j=current_piece.j;
+ memcpy(next_piece.blocks, current_piece.blocks, sizeof(next_piece.blocks));
+
+ translation = 0;
+ while (!move(env->stack, &next_piece, LEFT) && move(env->stack, &next_piece, DOWN))
+ {
+ translation--;
+ }
+
+ next_piece.i=current_piece.i+translation;
+ next_piece.j=current_piece.j;
+ do
+ {
+ current_score=compute_score(env, &next_piece);
+ if (current_score == best_score && (translation*translation < best_move->t2*best_move->t2))
+ {
+ best_move->r=rotation;
+ best_move->t=current_piece.i-env->current_piece.i;
+ best_move->t2=translation;
+ }
+ if (current_score > best_score)
+ {
+ best_score=current_score;
+ best_move->r=rotation;
+ best_move->t=current_piece.i-env->current_piece.i;
+ best_move->t2=translation;
+ }
+ translation++;
+ } while (!move(env->stack, &next_piece, RIGHT) && move(env->stack, &next_piece, DOWN));
+
+ current_piece.j=env->current_piece.j;
+ } while (!move(env->stack, ¤t_piece, RIGHT));
+
+ current_piece.i=env->current_piece.i;
+ move(env->stack, ¤t_piece, ROT);
+ }
+}
+
+static int check_collision(int stack[WIDTH][HEIGHT], t_piece *piece)
+{
+ int i,j;
+ for (i=0; i<4; i++)
+ {
+ for (j=0; j<4; j++)
+ {
+ if (
+ piece->blocks[i][j] &&
+ ( (i+piece->i)<0 ||
+ (i+piece->i)>(WIDTH-1) ||
+ (j+piece->j)>(HEIGHT-1) ||
+ stack[i+piece->i][j+piece->j]
+ )
+ )
+ {
+ return 1;
+ }
+ }
+ }
+ return 0;
+}
+
+static void copy_piece(t_piece *dest, t_piece *src)
+{
+ dest->i=src->i;
+ dest->j=src->j;
+ memcpy(dest->blocks, src->blocks, sizeof(dest->blocks));
+ dest->moves.ready=src->moves.ready;
+ dest->moves.r=src->moves.r;
+ dest->moves.t=src->moves.t;
+}
+
+static void new_piece(t_piece *piece)
+{
+ int rd;
+
+ rd=(int)( 7.0 * random() / ( RAND_MAX + 1.0 ) );
+ piece->i=3;
+ piece->j=0;
+ memcpy(piece->blocks, lbl[rd], sizeof(piece->blocks));
+ piece->moves.ready=0;
+}
+
+static int fix_piece(tetrisstruct *env, t_piece *piece, int tmp)
+{
+ int i,j,k;
+ int line;
+ int nb_line=0;
+ int (*stack)[WIDTH][HEIGHT];
+ int cells=0;
+
+ if (tmp)
+ {
+ memcpy(env->tmp_stack, env->stack, sizeof(env->tmp_stack));
+ stack=&(env->tmp_stack);
+ }
+ else
+ {
+ stack=&(env->stack);
+ }
+
+ for (i=0; i<4; i++)
+ {
+ for (j=0; j<4; j++)
+ {
+ if (piece->blocks[i][j])
+ {
+ if (tmp)
+ {
+ (*stack)[i+piece->i][j+piece->j] = -1;
+ }
+ else
+ {
+ (*stack)[i+piece->i][j+piece->j] = piece->blocks[i][j];
+ }
+ }
+ }
+ }
+ for (j=0; j<HEIGHT; j++)
+ {
+ line=1;
+ for (i=0; i<WIDTH; i++)
+ {
+ if (!(*stack)[i][j])
+ {
+ line=0;
+ break;
+ }
+ }
+ if (line)
+ {
+ nb_line++;
+ for (k=j; k>0; k--)
+ {
+ for (i=0; i<WIDTH; i++)
+ {
+ if (tmp && (*stack)[i][k]==-1)
+ {
+ cells++;
+ }
+ (*stack)[i][k]=(*stack)[i][k-1];
+ }
+ }
+ for (i=0; i<WIDTH; i++)
+ {
+ (*stack)[i][0]=0;
+ }
+ }
+ }
+
+ if (!tmp)
+ {
+ copy_piece(&(env->current_piece), &(env->next_piece));
+ new_piece(&(env->next_piece));
+ switch (nb_line)
+ {
+ case 0:
+ break;
+ case 1:
+ env->score+=40;
+ break;
+ case 2:
+ env->score+=100;
+ break;
+ case 3:
+ env->score+=300;
+ break;
+ case 4:
+ env->score+=1200;
+ break;
+ }
+
+ env->totline+=nb_line;
+ }
+ if (tmp)
+ {
+ nb_line*=cells;
+ }
+ return nb_line;
+}
+
+static int move(int stack[WIDTH][HEIGHT], t_piece *piece, t_direction direction)
+{
+ int ret=0;
+ int i,j;
+ int next_piece[4][4];
+
+ switch (direction)
+ {
+ case RIGHT:
+ piece->i++;
+ break;
+ case LEFT:
+ piece->i--;
+ break;
+ case DOWN:
+ piece->j++;
+ break;
+ case ROT:
+ memcpy(next_piece, piece->blocks, sizeof(next_piece));
+ for (i=0; i<4; i++)
+ {
+ for (j=0; j<4; j++)
+ {
+ piece->blocks[i][j]=next_piece[j][3-i];
+ }
+ }
+ break;
+ }
+ if (check_collision(stack, piece))
+ {
+ switch (direction)
+ {
+ case RIGHT:
+ piece->i--;
+ break;
+ case LEFT:
+ piece->i++;
+ break;
+ case DOWN:
+ piece->j--;
+ break;
+ case ROT:
+ memcpy(piece->blocks, next_piece, sizeof(piece->blocks));
+ break;
+ }
+ ret=1;
+ }
+
+ return ret;
+}
+
+static int next(tetrisstruct *env)
+{
+
+ int ret=0;
+ if(!env->current_piece.moves.ready)
+ {
+ compute_best_move(env, &(env->current_piece.moves));
+ env->current_piece.moves.ready=1;
+ }
+
+ if(env->current_piece.moves.r)
+ {
+ move(env->stack, &(env->current_piece), ROT);
+ env->current_piece.moves.r--;
+ }
+ else if(env->current_piece.moves.t>0)
+ {
+ move(env->stack, &(env->current_piece), RIGHT);
+ env->current_piece.moves.t--;
+ }
+ else if(env->current_piece.moves.t<0)
+ {
+ move(env->stack, &(env->current_piece), LEFT);
+ env->current_piece.moves.t++;
+ }
+ else if(!move(env->stack, &(env->current_piece), DOWN))
+ {
+
+ }
+ else if(env->current_piece.moves.t2>0)
+ {
+ move(env->stack, &(env->current_piece), RIGHT);
+ env->current_piece.moves.t2--;
+ }
+ else if(env->current_piece.moves.t2<0)
+ {
+ move(env->stack, &(env->current_piece), LEFT);
+ env->current_piece.moves.t2++;
+ }
+ else
+ {
+ fix_piece(env, &(env->current_piece), 0);
+ ret = check_collision(env->stack, &(env->current_piece));
+ }
+
+ return ret;
+}
+
+static void draw_square(int x, int y, t_color color)
+{
+ switch(color)
+ {
+ case BLACK:
+ glColor3f(0.0f, 0.0f, 0.0f);
+ break;
+ case RED:
+ glColor3f(1.0f, 0.0f, 0.0f);
+ break;
+ case BLUE:
+ glColor3f(1.0f, 1.0f, 0.0f);
+ break;
+ case BROWN:
+ glColor3f(1.0f, 0.0f, 1.0f);
+ break;
+ case MAJ:
+ glColor3f(1.0f, 1.0f, 1.0f);
+ break;
+ case WHITE:
+ glColor3f(0.0f, 1.0f, 0.0f);
+ break;
+ case CYAN:
+ glColor3f(0.0f, 0.0f, 1.0f);
+ break;
+ case GREEN:
+ glColor3f(0.0f, 1.0f, 1.0f);
+ break;
+ }
+
+ x-=5;
+ y-=11;
+
+ glBegin(GL_QUADS);
+ glVertex2f((x)-SQUARE_SIZE, -(y)+SQUARE_SIZE);
+ glVertex2f((x)+SQUARE_SIZE, -(y)+SQUARE_SIZE);
+ glVertex2f((x)+SQUARE_SIZE, -(y)-SQUARE_SIZE);
+ glVertex2f((x)-SQUARE_SIZE, -(y)-SQUARE_SIZE);
+ glEnd();
+}
+
+static void draw_segments(char *segments)
+{
+ while (*segments != '\0')
+ {
+ glBegin(GL_POLYGON);
+ switch (*segments)
+ {
+ case 'a':
+ glVertex2f(0.05f, 1.25f);
+ glVertex2f(0.10f, 1.30f);
+ glVertex2f(0.60f, 1.30f);
+ glVertex2f(0.64f, 1.25f);
+ glVertex2f(0.60f, 1.20f);
+ glVertex2f(0.10f, 1.20f);
+ break;
+ case 'b':
+ glVertex2f(0.65f, 1.25f);
+ glVertex2f(0.70f, 1.20f);
+ glVertex2f(0.70f, 0.70f);
+ glVertex2f(0.65f, 0.65f);
+ glVertex2f(0.60f, 0.70f);
+ glVertex2f(0.60f, 1.20f);
+ break;
+ case 'c':
+ glVertex2f(0.65f, 0.65f);
+ glVertex2f(0.70f, 0.60f);
+ glVertex2f(0.70f, 0.10f);
+ glVertex2f(0.65f, 0.05f);
+ glVertex2f(0.60f, 0.10f);
+ glVertex2f(0.60f, 0.60f);
+ break;
+ case 'd':
+ glVertex2f(0.05f, 0.05f);
+ glVertex2f(0.10f, 0.10f);
+ glVertex2f(0.60f, 0.10f);
+ glVertex2f(0.65f, 0.05f);
+ glVertex2f(0.60f, 0.00f);
+ glVertex2f(0.10f, 0.00f);
+ break;
+ case 'e':
+ glVertex2f(0.05f, 0.65f);
+ glVertex2f(0.10f, 0.60f);
+ glVertex2f(0.10f, 0.10f);
+ glVertex2f(0.05f, 0.05f);
+ glVertex2f(0.00f, 0.10f);
+ glVertex2f(0.00f, 0.60f);
+ break;
+ case 'f':
+ glVertex2f(0.05f, 1.25f);
+ glVertex2f(0.10f, 1.20f);
+ glVertex2f(0.10f, 0.70f);
+ glVertex2f(0.05f, 0.65f);
+ glVertex2f(0.00f, 0.70f);
+ glVertex2f(0.00f, 1.20f);
+ break;
+ case 'g':
+ glVertex2f(0.05f, 0.65f);
+ glVertex2f(0.10f, 0.70f);
+ glVertex2f(0.30f, 0.70f);
+ glVertex2f(0.35f, 0.65f);
+ glVertex2f(0.30f, 0.60f);
+ glVertex2f(0.10f, 0.60f);
+ break;
+ case 'h':
+ glVertex2f(0.35f, 0.65f);
+ glVertex2f(0.40f, 0.70f);
+ glVertex2f(0.60f, 0.70f);
+ glVertex2f(0.65f, 0.65f);
+ glVertex2f(0.60f, 0.60f);
+ glVertex2f(0.40f, 0.60f);
+ break;
+ case 'i':
+ glVertex2f(0.30f, 1.20f);
+ glVertex2f(0.40f, 1.20f);
+ glVertex2f(0.40f, 0.70f);
+ glVertex2f(0.35f, 0.65f);
+ glVertex2f(0.30f, 0.70f);
+ break;
+ case 'j':
+ glVertex2f(0.35f, 0.65f);
+ glVertex2f(0.40f, 0.60f);
+ glVertex2f(0.40f, 0.10f);
+ glVertex2f(0.30f, 0.10f);
+ glVertex2f(0.30f, 0.60f);
+ break;
+ case 'k':
+ glVertex2f(0.100f, 1.200f);
+ glVertex2f(0.175f, 1.200f);
+ glVertex2f(0.300f, 0.775f);
+ glVertex2f(0.300f, 0.700f);
+ glVertex2f(0.225f, 0.700f);
+ glVertex2f(0.100f, 1.125f);
+ break;
+ case 'l':
+ glVertex2f(0.525f, 1.200f);
+ glVertex2f(0.600f, 1.200f);
+ glVertex2f(0.600f, 1.125f);
+ glVertex2f(0.475f, 0.700f);
+ glVertex2f(0.400f, 0.700f);
+ glVertex2f(0.400f, 0.775f);
+ break;
+ case 'm':
+ glVertex2f(0.300f, 0.600f);
+ glVertex2f(0.225f, 0.600f);
+ glVertex2f(0.100f, 0.175f);
+ glVertex2f(0.100f, 0.100f);
+ glVertex2f(0.175f, 0.100f);
+ glVertex2f(0.300f, 0.525f);
+ break;
+ case 'n':
+ glVertex2f(0.400f, 0.600f);
+ glVertex2f(0.475f, 0.600f);
+ glVertex2f(0.600f, 0.175f);
+ glVertex2f(0.600f, 0.100f);
+ glVertex2f(0.525f, 0.100f);
+ glVertex2f(0.400f, 0.525f);
+ break;
+ }
+ glEnd();
+ segments++;
+ }
+}
+
+static void load_segments_font(void)
+{
+ int i=0;
+ glGenLists ((GLuint) 39);
+ while (number_segments[i] != NULL)
+ {
+ glNewList(i+'0'+MYLIST,GL_COMPILE);
+ draw_segments(number_segments[i++]);
+ glTranslatef (1.0f, 0.0f, 0.0f);
+ glEndList();
+ }
+
+ i=0;
+ while (char_segments[i] != NULL)
+ {
+ glNewList(i+'A'+MYLIST,GL_COMPILE);
+ draw_segments(char_segments[i++]);
+ glTranslatef(1.0f, 0.0f, 0.0f);
+ glEndList();
+ }
+
+ glNewList(' '+MYLIST,GL_COMPILE);
+ glTranslatef(1.0f, 0.0f, 0.0f);
+ glEndList();
+
+ glNewList(':'+MYLIST,GL_COMPILE);
+ glBegin(GL_POLYGON);
+ glVertex2f(0.15f, 0.90f);
+ glVertex2f(0.25f, 0.90f);
+ glVertex2f(0.25f, 1.00f);
+ glVertex2f(0.15f, 1.00f);
+ glEnd();
+ glBegin(GL_POLYGON);
+ glVertex2f(0.15f, 0.30f);
+ glVertex2f(0.25f, 0.30f);
+ glVertex2f(0.25f, 0.40f);
+ glVertex2f(0.15f, 0.40f);
+ glEnd();
+ glTranslatef (0.650f, 0.0f, 0.0f);
+ glEndList();
+}
+
+static void draw_string(float x, float y, char *fmt, ...)
+{
+ char buffer[64];
+ va_list args;
+ va_start(args, fmt);
+
+ vsprintf(buffer, fmt, args);
+ va_end(args);
+
+ glPushMatrix();
+ glTranslatef(x, y, 0.0f);
+ glListBase(MYLIST);
+ glCallLists(strlen(buffer), GL_UNSIGNED_BYTE, buffer);
+ glPopMatrix();
+}
+
+static void draw_stack(tetrisstruct *env)
+{
+ int i, j;
+
+ for(j=0; j<HEIGHT; j++)
+ {
+ for(i=0; i<WIDTH; i++)
+ {
+ if(env->stack[i][j])
+ {
+ draw_square(i,j,env->stack[i][j]);
+ }
+ else if(i>=env->current_piece.i && i<(env->current_piece.i+4) && j>=env->current_piece.j && j<(env->current_piece.j+4) )
+ {
+ if(env->current_piece.blocks[i-env->current_piece.i][j-env->current_piece.j])
+ {
+ draw_square(i,j,env->current_piece.blocks[i-env->current_piece.i][j-env->current_piece.j]);
+ }
+ }
+ }
+ }
+
+ for(i=0; i<4; i++)
+ {
+ for(j=0; j<4; j++)
+ {
+ if(env->next_piece.blocks[i][j])
+ {
+ draw_square(13+i, j, env->next_piece.blocks[i][j]);
+ }
+ }
+ }
+
+}
+
+ENTRYPOINT void reshape_tetris (ModeInfo *mi, int w, int h){
+ float ratio;
+
+ /* Prevent a divide by zero, when window is too short
+ (you cant make a window of zero width).*/
+ if(h == 0)
+ h = 1;
+
+ ratio = 1.0* w / h;
+
+ /* Reset the coordinate system before modifying*/
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+
+ /* Set the viewport to be the entire window*/
+ glViewport(0, 0, w, h);
+
+ /* Set the correct perspective.*/
+ gluPerspective(45.0f,ratio,-100.0f,2.0f);
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ glTranslated(0.0f, 0.0f, -32.0f);
+}
+
+ENTRYPOINT void init_tetris(ModeInfo *mi)
+{
+ tetrisstruct *env;
+
+ if (!tetris)
+ {
+ tetris=calloc (MI_NUM_SCREENS(mi), sizeof(tetrisstruct));
+ }
+ env = &tetris[MI_SCREEN(mi)];
+ env->glx_context = init_GL(mi);
+ reshape_tetris(mi, MI_WIDTH(mi), MI_HEIGHT(mi));
+
+ glEnable(GL_DEPTH_TEST);
+
+ load_segments_font();
+
+ env->end=-1;
+ env->newPhase=0;
+ env->game_time=time(NULL);
+
+ memset(env->stack, 0, WIDTH*HEIGHT*sizeof(int));
+ memset(env->tmp_stack, 0, WIDTH*HEIGHT*sizeof(int));
+}
+
+ENTRYPOINT void release_tetris(ModeInfo * mi)
+{
+ if (tetris)
+ {
+ free((void *) tetris);
+ tetris = (tetrisstruct *) NULL;
+ }
+ FreeAllGL(mi);
+}
+
+ENTRYPOINT void draw_tetris(ModeInfo *mi)
+{
+ int i,j;
+ unsigned int curtime;
+
+ Display *dpy = MI_DISPLAY(mi);
+ Window window = MI_WINDOW(mi);
+
+ glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *(tetris->glx_context));
+ if (!tetris->end)
+ {
+ tetris->end=next(tetris);
+ }
+ else
+ {
+ tetris->newPhase++;
+ }
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+ glDisable(GL_DEPTH_TEST);
+ glPushMatrix();
+ glColor3f(0.5f, 0.5f, 0.5f);
+
+
+ glBegin(GL_POLYGON);
+ glVertex2f(( -6.0)-SQUARE_SIZE, -( -12.0)+SQUARE_SIZE);
+ glVertex2f(( -6.0)+SQUARE_SIZE, -( -12.0)+SQUARE_SIZE);
+ glVertex2f(( -6.0)+SQUARE_SIZE, -( 11.0)-SQUARE_SIZE);
+ glVertex2f(( -6.0)-SQUARE_SIZE, -( 11.0)-SQUARE_SIZE);
+ glEnd();
+ glBegin(GL_POLYGON);
+ glVertex2f(( 5.0)-SQUARE_SIZE, -( -12.0)+SQUARE_SIZE);
+ glVertex2f(( 5.0)+SQUARE_SIZE, -( -12.0)+SQUARE_SIZE);
+ glVertex2f(( 5.0)+SQUARE_SIZE, -( 11.0)-SQUARE_SIZE);
+ glVertex2f(( 5.0)-SQUARE_SIZE, -( 11.0)-SQUARE_SIZE);
+ glEnd();
+ glBegin(GL_POLYGON);
+ glVertex2f(( -6.0)-SQUARE_SIZE, -( -12.0)+SQUARE_SIZE);
+ glVertex2f(( 5.0)+SQUARE_SIZE, -( -12.0)+SQUARE_SIZE);
+ glVertex2f(( 5.0)+SQUARE_SIZE, -( -12.0)-SQUARE_SIZE);
+ glVertex2f(( -6.0)-SQUARE_SIZE, -( -12.0)-SQUARE_SIZE);
+ glEnd();
+ glBegin(GL_POLYGON);
+ glVertex2f(( 5.0)-SQUARE_SIZE, -( 11.0)+SQUARE_SIZE);
+ glVertex2f(( -6.0)+SQUARE_SIZE, -( 11.0)+SQUARE_SIZE);
+ glVertex2f(( -6.0)+SQUARE_SIZE, -( 11.0)-SQUARE_SIZE);
+ glVertex2f(( 5.0)-SQUARE_SIZE, -( 11.0)-SQUARE_SIZE);
+ glEnd();
+
+ glBegin(GL_POLYGON);
+ glVertex2f(( 7.0)-SQUARE_SIZE, -( -12.0)+SQUARE_SIZE);
+ glVertex2f(( 7.0)+SQUARE_SIZE, -( -12.0)+SQUARE_SIZE);
+ glVertex2f(( 7.0)+SQUARE_SIZE, -( -7.0)-SQUARE_SIZE);
+ glVertex2f(( 7.0)-SQUARE_SIZE, -( -7.0)-SQUARE_SIZE);
+ glEnd();
+ glBegin(GL_POLYGON);
+ glVertex2f(( 12.0)-SQUARE_SIZE, -( -12.0)+SQUARE_SIZE);
+ glVertex2f(( 12.0)+SQUARE_SIZE, -( -12.0)+SQUARE_SIZE);
+ glVertex2f(( 12.0)+SQUARE_SIZE, -( -7.0)-SQUARE_SIZE);