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tfv: convert some variables

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This commit is contained in:
Vince Weaver 2017-11-21 21:11:17 -05:00
parent 7535c5789d
commit d739b8f6db
1 changed files with 35 additions and 27 deletions
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62
gr-sim/tfv_flying_6502.c
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@ -11,6 +11,11 @@
#include "tfv_sprites.h" #include "tfv_sprites.h"
/* Zero page allocations */
#define SHIPY 0xE4
#define TURNING 0x60
/* Mode7 code based on code from: */ /* Mode7 code based on code from: */
/* http://www.helixsoft.nl/articles/circle/sincos.htm */ /* http://www.helixsoft.nl/articles/circle/sincos.htm */
@ -365,24 +370,27 @@ void draw_background_mode7(void) {
int flying(void) { int flying(void) {
unsigned char ch; unsigned char ch;
int shipy;
int turning=0;
int draw_splash=0,splash_count=0; int draw_splash=0,splash_count=0;
int zint; int zint;
long long cycles=0;
/************************************************/ /************************************************/
/* Flying */ /* Flying */
/************************************************/ /************************************************/
gr(); gr();
clear_bottom(PAGE0); clear_bottom(PAGE0); /* jsr clear_screens */
clear_bottom(PAGE1); clear_bottom(PAGE1); /* jsr set_gr_page0 */
shipy=20; ram[SHIPY]=20; /* lda #20 */
/* sta SHIPY */
/* lda #0 */
ram[TURNING]=0; /* sta TURNING */
while(1) { while(1) {
cycles=0;
if (splash_count>0) splash_count--; if (splash_count>0) splash_count--;
ch=grsim_input(); ch=grsim_input();
@ -407,8 +415,8 @@ int flying(void) {
#endif #endif
if ((ch=='w') || (ch==APPLE_UP)) { if ((ch=='w') || (ch==APPLE_UP)) {
if (shipy>16) { if (ram[SHIPY]>16) {
shipy-=2; ram[SHIPY]-=2;
space_z.i++; space_z.i++;
} }
@ -417,8 +425,8 @@ int flying(void) {
// printf("Z=%lf\n",space_z); // printf("Z=%lf\n",space_z);
} }
if ((ch=='s') || (ch==APPLE_DOWN)) { if ((ch=='s') || (ch==APPLE_DOWN)) {
if (shipy<28) { if (ram[SHIPY]<28) {
shipy+=2; ram[SHIPY]+=2;
space_z.i--; space_z.i--;
} }
else { else {
@ -427,22 +435,22 @@ int flying(void) {
// printf("Z=%lf\n",space_z); // printf("Z=%lf\n",space_z);
} }
if ((ch=='a') || (ch==APPLE_LEFT)) { if ((ch=='a') || (ch==APPLE_LEFT)) {
if (turning>0) { if (ram[TURNING]>0) {
turning=0; ram[TURNING]=0;
} }
else { else {
turning=-20; ram[TURNING]=-20;
angle-=1; angle-=1;
if (angle<0) angle+=ANGLE_STEPS; if (angle<0) angle+=ANGLE_STEPS;
} }
} }
if ((ch=='d') || (ch==APPLE_RIGHT)) { if ((ch=='d') || (ch==APPLE_RIGHT)) {
if (turning<0) { if (ram[TURNING]<0) {
turning=0; ram[TURNING]=0;
} }
else { else {
turning=20; ram[TURNING]=20;
angle+=1; angle+=1;
if (angle>=ANGLE_STEPS) angle-=ANGLE_STEPS; if (angle>=ANGLE_STEPS) angle-=ANGLE_STEPS;
} }
@ -484,7 +492,7 @@ int flying(void) {
draw_background_mode7(); draw_background_mode7();
grsim_put_sprite(shadow_forward,SHIPX+3,31+zint); grsim_put_sprite(shadow_forward,SHIPX+3,31+zint);
grsim_put_sprite(ship_forward,SHIPX,shipy); grsim_put_sprite(ship_forward,SHIPX,ram[SHIPY]);
page_flip(); page_flip();
usleep(200000); usleep(200000);
@ -530,7 +538,7 @@ int flying(void) {
if (speed>0) { if (speed>0) {
if ((shipy>25) && (turning!=0)) { if ((ram[SHIPY]>25) && (ram[TURNING]!=0)) {
splash_count=1; splash_count=1;
} }
@ -541,33 +549,33 @@ int flying(void) {
// printf("VMW: %d %d\n",draw_splash,splash_count); // printf("VMW: %d %d\n",draw_splash,splash_count);
if (turning==0) { if (ram[TURNING]==0) {
if (draw_splash) { if (draw_splash) {
grsim_put_sprite(splash_forward, grsim_put_sprite(splash_forward,
SHIPX+1,shipy+9); SHIPX+1,ram[SHIPY]+9);
} }
grsim_put_sprite(shadow_forward,SHIPX+3,31+zint); grsim_put_sprite(shadow_forward,SHIPX+3,31+zint);
grsim_put_sprite(ship_forward,SHIPX,shipy); grsim_put_sprite(ship_forward,SHIPX,ram[SHIPY]);
} }
if (turning<0) { if (ram[TURNING]<0) {
if (draw_splash) { if (draw_splash) {
grsim_put_sprite(splash_left, grsim_put_sprite(splash_left,
SHIPX+1,36); SHIPX+1,36);
} }
grsim_put_sprite(shadow_left,SHIPX+3,31+zint); grsim_put_sprite(shadow_left,SHIPX+3,31+zint);
grsim_put_sprite(ship_left,SHIPX,shipy); grsim_put_sprite(ship_left,SHIPX,ram[SHIPY]);
turning++; ram[TURNING]++;
} }
if (turning>0) { if (ram[TURNING]>0) {
if (draw_splash) { if (draw_splash) {
grsim_put_sprite(splash_right, grsim_put_sprite(splash_right,
SHIPX+1,36); SHIPX+1,36);
} }
grsim_put_sprite(shadow_right,SHIPX+3,31+zint); grsim_put_sprite(shadow_right,SHIPX+3,31+zint);
grsim_put_sprite(ship_right,SHIPX,shipy); grsim_put_sprite(ship_right,SHIPX,ram[SHIPY]);
turning--; ram[TURNING]--;
} }
page_flip(); page_flip();