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slackware-current/source/xap/xgames/xlander.fixes.diff

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Slackware 13.0 Wed Aug 26 10:00:38 CDT 2009 Slackware 13.0 x86_64 is released as stable! Thanks to everyone who helped make this release possible -- see the RELEASE_NOTES for the credits. The ISOs are off to the replicator. This time it will be a 6 CD-ROM 32-bit set and a dual-sided 32-bit/64-bit x86/x86_64 DVD. We're taking pre-orders now at store.slackware.com. Please consider picking up a copy to help support the project. Once again, thanks to the entire Slackware community for all the help testing and fixing things and offering suggestions during this development cycle. As always, have fun and enjoy! -P.
2009-08-26 17:00:38 +02:00
diff -ru a-slackware-1995-06-17/game.c b-gary/game.c
--- a-slackware-1995-06-17/game.c 1995-06-17 21:23:00.000000000 -0400
+++ b-gary/game.c 2007-03-01 04:08:49.000000000 -0500
@@ -165,7 +165,7 @@
switch (event.type) {
case KeyPress:
if (lander->fuel > 0.0) {
- XLookupString (&event, &ch, 1, &keysym, (XComposeStatus *) 0);
+ XLookupString ((XKeyEvent *) &event, &ch, 1, &keysym, (XComposeStatus *) 0);
if (ch == lander->controls[0] || keysym == XK_Up)
lander->rear_thruster = lander->lateral_thrust;
else if (ch == lander->controls[1] || keysym == XK_Down)
@@ -179,7 +179,7 @@
}
break;
case KeyRelease:
- XLookupString (&event, &ch, 1, &keysym, (XComposeStatus *) 0);
+ XLookupString ((XKeyEvent *) &event, &ch, 1, &keysym, (XComposeStatus *) 0);
if (ch == lander->controls[0] || keysym == XK_Up)
lander->rear_thruster = 0;
else if (ch == lander->controls[1] || keysym == XK_Down)
@@ -197,24 +197,26 @@
}
if (lander->retro_thruster > 0)
- lander->fuel -= RETRO_BURN;
+ lander->fuel -= RETRO_BURN / fps;
if (lander->front_thruster > 0)
- lander->fuel -= LATERAL_BURN;
+ lander->fuel -= LATERAL_BURN / fps;
if (lander->rear_thruster > 0)
- lander->fuel -= LATERAL_BURN;
+ lander->fuel -= LATERAL_BURN / fps;
if (lander->left_thruster > 0)
- lander->fuel -= LATERAL_BURN;
+ lander->fuel -= LATERAL_BURN / fps;
if (lander->right_thruster > 0)
- lander->fuel -= LATERAL_BURN;
+ lander->fuel -= LATERAL_BURN / fps;
+ if (lander->fuel < 0.0)
+ lander->fuel = 0.0; /* Prevents gas gauge from going negative */
lander->vert_speed +=
- (lander->retro_thruster + acceleration) / TICKS_PER_SECOND;
- lander->alt += lander->vert_speed / TICKS_PER_SECOND;
+ (lander->retro_thruster + acceleration) / fps;
+ lander->alt += lander->vert_speed / fps;
lat_accel_x = lander->right_thruster - lander->left_thruster;
lat_accel_y = lander->rear_thruster - lander->front_thruster;
lat_veloc_x = lander->lat_veloc * cos (lander->heading) + lat_accel_x;
lat_veloc_y = lander->lat_veloc * sin (lander->heading) + lat_accel_y;
- craft->off_x += (lat_veloc_x / TICKS_PER_SECOND) * PIXELS_PER_FOOT;
- craft->off_z += (lat_veloc_y / TICKS_PER_SECOND) * PIXELS_PER_FOOT;
+ craft->off_x += (lat_veloc_x / fps) * PIXELS_PER_FOOT;
+ craft->off_z += (lat_veloc_y / fps) * PIXELS_PER_FOOT;
lander->lat_veloc =
sqrt (lat_veloc_x * lat_veloc_x + lat_veloc_y * lat_veloc_y);
diff -ru a-slackware-1995-06-17/globals.c b-gary/globals.c
--- a-slackware-1995-06-17/globals.c 1995-06-17 21:22:36.000000000 -0400
+++ b-gary/globals.c 2007-03-01 04:08:49.000000000 -0500
@@ -27,3 +27,4 @@
XrmDatabase resources = (XrmDatabase) 0;
/* X Resource database */
float acceleration = 0.0; /* Acceleration due to gravity */
+float fps; /* Current frames per second */
diff -ru a-slackware-1995-06-17/globals.h b-gary/globals.h
--- a-slackware-1995-06-17/globals.h 1995-06-17 21:22:41.000000000 -0400
+++ b-gary/globals.h 2007-03-01 04:08:49.000000000 -0500
@@ -30,5 +30,6 @@
extern int px, py, pz;
extern int roll, pitch, yaw;
extern float acceleration;
+extern float fps;
-#endif _globals_h_
+#endif /* _globals_h_ */
diff -ru a-slackware-1995-06-17/initialize.c b-gary/initialize.c
--- a-slackware-1995-06-17/initialize.c 1995-06-17 21:23:00.000000000 -0400
+++ b-gary/initialize.c 2007-03-01 04:08:49.000000000 -0500
@@ -61,7 +61,7 @@
lander->vert_speed = 0.0;
lander->heading = 1.36;
lander->lat_veloc = 100.0;
- lander->fuel = 320.0;
+ lander->fuel = FULL_TANK;
lander->alt = craft->off_y / PIXELS_PER_FOOT;
}
@@ -293,7 +293,7 @@
world->min_x = world->min_y = -HALF_WORLD_LENGTH;
world->max_x = world->max_y = HALF_WORLD_WIDTH;
- srandom ((long) time ((int *) 0));
+ srandom ((long) time ((time_t *) 0));
for (x = -HALF_WORLD_WIDTH; x < HALF_WORLD_WIDTH;
r ^= 1, x += EDGE_LENGTH + (int) x_offset)
for (y = r * (int) y_offset - HALF_WORLD_LENGTH; y < HALF_WORLD_LENGTH;
diff -ru a-slackware-1995-06-17/instrument.c b-gary/instrument.c
--- a-slackware-1995-06-17/instrument.c 1995-06-17 21:22:39.000000000 -0400
+++ b-gary/instrument.c 2007-03-01 04:08:49.000000000 -0500
@@ -48,7 +48,7 @@
{
static int heading_x = 50, heading_y = 15;
static int fuel_level = 80, old_x = 290, old_y = 10;
- int new_fuel_level = (int) fuel / 4;
+ int new_fuel_level = (int) (fuel / (float) FULL_TANK * 80.0);
char buf[32];
/*
diff -ru a-slackware-1995-06-17/patchlevel.h b-gary/patchlevel.h
--- a-slackware-1995-06-17/patchlevel.h 1995-06-17 21:23:00.000000000 -0400
+++ b-gary/patchlevel.h 2007-03-01 04:08:49.000000000 -0500
@@ -1,2 +1,2 @@
-#define PATCHLEVEL 2
+#define PATCHLEVEL 3
diff -ru a-slackware-1995-06-17/xlander.c b-gary/xlander.c
--- a-slackware-1995-06-17/xlander.c 1995-06-17 21:22:36.000000000 -0400
+++ b-gary/xlander.c 2007-03-01 04:08:49.000000000 -0500
@@ -14,6 +14,7 @@
#include "xlander.h"
#include "globals.h"
+#include <sys/time.h>
/*
* A lander
@@ -68,6 +69,7 @@
static DATABASE *world, *craft, *thrust, *shadow;
static LANDER lander;
int mask;
+struct timeval frame_time, prev_frame_time;
/******************************************************************************
** DisplayWorld
@@ -98,7 +100,26 @@
XSync (d,False);
}
-void main (argc, argv)
+
+void UpdateFrameRate ()
+{
+ unsigned long sec, usec, diff;
+
+ gettimeofday(&frame_time, NULL);
+ sec = frame_time.tv_sec - prev_frame_time.tv_sec;
+ usec = frame_time.tv_usec - prev_frame_time.tv_usec;
+ if(usec < 0) {
+ usec += 1000000;
+ sec--;
+ }
+ diff = sec * 1000000 + usec;
+ fps = 1000000.0 / (float) diff;
+ prev_frame_time.tv_sec = frame_time.tv_sec;
+ prev_frame_time.tv_usec = frame_time.tv_usec;
+}
+
+
+int main (argc, argv)
int argc;
char *argv[];
{
@@ -113,6 +134,10 @@
thrust = DBInitFromData (thrust_data, THRUSTSIZE);
shadow = DBInitFromData (shadow_data, SHADOWSIZE);
+ gettimeofday(&frame_time, NULL);
+ gettimeofday(&prev_frame_time, NULL);
+ fps = 1000000.0; /* Prevent startup pulse */
+
/*
* Initial coordinates of the lander...
*/
@@ -143,7 +168,9 @@
for (;;) {
UpdateOrientation (world, craft, &lander);
DisplayWorld ();
+ UpdateFrameRate ();
(void) sigsetmask (mask);
mask = sigblock (sigmask (SIGINT));
}
+ return 0;
}
diff -ru a-slackware-1995-06-17/xlander.h b-gary/xlander.h
--- a-slackware-1995-06-17/xlander.h 1995-06-17 21:23:00.000000000 -0400
+++ b-gary/xlander.h 2007-03-01 04:08:49.000000000 -0500
@@ -20,6 +20,7 @@
#ifndef _xlander_h_
#define _xlander_h_
+#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <signal.h>
@@ -41,7 +42,6 @@
#define HALF_WORLD_LENGTH (WORLD_LENGTH >> 1)
#define HALF_WORLD_WIDTH (WORLD_WIDTH >> 1)
#define PIXELS_PER_FOOT 6 /* Number of pixels per foot */
-#define TICKS_PER_SECOND 3 /* Number of frames per second */
#define ACCELERATION -5.310 /* Acceleration of gravity (ft/sec^2) */
#define RETRO 35.0 /* Acceleration due to retroactive thruster */
#define LATERAL_THRUST 5.0 /* Acceleration due to lateral thruster */
@@ -53,7 +53,7 @@
#define LAT_SPEED 30.0 /* Maximum lateral speed without crashing */
#define RETRO_BURN 1.6 /* Retroactive thruster fuel consumption */
#define LATERAL_BURN 0.4 /* Lateral thruster fuel consumption */
-#define FULL_TANK 320 /* Full tank of fuel */
+#define FULL_TANK 15 /* Full tank of fuel */
#define MAX_VELOC 640.0 /* Maximum velocity */
#define LANDER_WIDTH 600
@@ -107,9 +107,6 @@
DATABASE *DBInit (), *DBInitFromData (), *LoadDataBase ();
void DBInsert (), DBFinish (), DBPlot (), SwapBuffers (), exit ();
-#ifndef _AIX
-char *malloc ();
-#endif
double atof ();
#ifdef sun
int printf (), fprintf (), time ();
@@ -122,4 +119,4 @@
#define WorldToRadarX(x) (290 + (((int) (x) + (WORLD_WIDTH >> 1)) / 250))
#define WorldToRadarY(y) (90 - (((int) (y) + (WORLD_LENGTH >> 1)) / 250))
-#endif _xlander_h_
+#endif /* _xlander_h_ */
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