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