Hacked in a twoplayer-mode with a blue car.
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@ -14,6 +14,7 @@
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// headers for binary data generated by bin2o macro in makefile
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#include "car_pal_bin.h"
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#include "car_bin.h"
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#include "car_blue_bin.h"
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#include "smoke_bin.h"
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#include "sinlut.h"
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@ -32,7 +33,7 @@ typedef s32 FIXED; // 32bit FIXED in 24.8 format
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#define NUMSMOKES 20
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u16 PaletteBuffer[256];
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OBJATTR oe_buffer[1+NUMSMOKES];
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OBJATTR oe_buffer[2+NUMSMOKES+10];
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OBJAFFINE *const oa_buffer = (OBJAFFINE*)oe_buffer;
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s8 smoke_frame[NUMSMOKES];
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@ -46,10 +47,12 @@ void VblankInterrupt()
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int main(void)
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{
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OBJATTR*car = &oe_buffer[0];
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OBJAFFINE*car_aff = &oa_buffer[0];
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OBJATTR*red_car = &oe_buffer[0];
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OBJATTR*blue_car = &oe_buffer[1];
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OBJAFFINE*red_car_aff = &oa_buffer[0];
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OBJAFFINE*blue_car_aff = &oa_buffer[1];
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// We'll make a few smoke clouds
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OBJATTR*smokes = &oe_buffer[1];
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OBJATTR*smokes = &oe_buffer[2];
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// Set up the interrupt handlers
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InitInterrupt();
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@ -72,6 +75,8 @@ int main(void)
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void* free_space = BITMAP_OBJ_BASE_ADR;
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CpuFastSet(car_bin, free_space, COPY32 | car_bin_size/4);
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free_space += car_bin_size;
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CpuFastSet(car_blue_bin, free_space, COPY32 | car_bin_size/4);
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free_space += car_blue_bin_size;
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CpuFastSet(car_pal_bin, OBJ_COLORS, COPY32 | car_pal_bin_size/4);
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@ -79,7 +84,8 @@ int main(void)
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CpuFastSet(smoke_bin, free_space, COPY32 | smoke_bin_size/4);
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free_space += smoke_bin_size;
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car->attr2 = OBJ_CHAR(512);
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red_car->attr2 = OBJ_CHAR(512);
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blue_car->attr2 = OBJ_CHAR(520);
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u8 next_smoke = 0;
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@ -91,74 +97,137 @@ int main(void)
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smoke_frame[i] = 6;
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}
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FIXED x = INT2FIX(112);
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FIXED y = INT2FIX(72);
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int speed = 0;
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int angle = 0;
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FIXED red_x = INT2FIX(102);
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FIXED red_y = INT2FIX(72);
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FIXED blue_x = INT2FIX(122);
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FIXED blue_y = INT2FIX(72);
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int red_speed = 0;
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int red_angle = 0;
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int blue_speed = 0;
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int blue_angle = 0;
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while (1) {
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if (KeysHeld() & KEY_RIGHT) {
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angle -= 8;
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red_angle -= 8;
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} else if (KeysHeld() & KEY_LEFT) {
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angle += 8;
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red_angle += 8;
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}
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if (angle < 0) {
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angle += 512;
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} else if (angle >= 512) {
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angle -= 512;
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if (red_angle < 0) {
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red_angle += 512;
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} else if (red_angle >= 512) {
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red_angle -= 512;
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}
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if (KeysHeld() & KEY_A) {
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if ((speed<30) && (speed>=0)) {
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blue_angle -= 8;
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} else if (KeysHeld() & KEY_B) {
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blue_angle += 8;
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}
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if (blue_angle < 0) {
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blue_angle += 512;
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} else if (blue_angle >= 512) {
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blue_angle -= 512;
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}
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if (KeysHeld() & KEY_L) {
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if ((red_speed<30) && (red_speed>=0)) {
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// slow speedup
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speed += 1;
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} else if (speed<0) {
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red_speed += 1;
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} else if (red_speed<0) {
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// break if we're going backward
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speed += 2;
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red_speed += 2;
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}
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}
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if (KeysHeld() & KEY_B) {
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if ((speed>=-5) && (speed<=0)) {
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if (KeysHeld() & KEY_R) {
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if ((blue_speed<30) && (blue_speed>=0)) {
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// slow speedup
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speed -= 1;
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} else if (speed>0) {
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// break if we're going forward
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speed -= 2;
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blue_speed += 1;
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} else if (blue_speed<0) {
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// break if we're going backward
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blue_speed += 2;
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}
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}
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}
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/* Disabled */
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/* if (KeysHeld() & KEY_B) { */
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/* if ((red_speed>=-5) && (red_speed<=0)) { */
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/* // slow speedup */
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/* red_speed -= 1; */
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/* } else if (red_speed>0) { */
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/* // break if we're going forward */
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/* red_speed -= 2; */
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/* } */
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/* } */
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// slow down if we're not doing anything
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if (!(KeysHeld() & KEY_A) && !(KeysHeld() & KEY_B)) {
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if (speed>0) {
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speed -= 1;
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} else if (speed<0) {
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speed += 1;
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if (!(KeysHeld() & KEY_L)) {
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if (red_speed>0) {
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red_speed -= 1;
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} else if (red_speed<0) {
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red_speed += 1;
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}
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}
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int fspeed = speed >> 3;
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if (!(KeysHeld() & KEY_R)) {
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if (blue_speed>0) {
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blue_speed -= 1;
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} else if (blue_speed<0) {
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blue_speed += 1;
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}
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}
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int fred_speed = red_speed >> 3;
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x -= fspeed*lut_sin(angle);
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y -= fspeed*lut_cos(angle);
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red_x -= fred_speed*lut_sin(red_angle);
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red_y -= fred_speed*lut_cos(red_angle);
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if (x>=INT2FIX(232)) {
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x -= INT2FIX(256);
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} else if (x<INT2FIX(-24)) {
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x += INT2FIX(256);
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if (red_x>=INT2FIX(232)) {
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red_x -= INT2FIX(256);
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} else if (red_x<INT2FIX(-24)) {
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red_x += INT2FIX(256);
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}
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if (y>=INT2FIX(152)) {
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y -= INT2FIX(176);
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} else if (y<INT2FIX(-24)) {
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y += INT2FIX(176);
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if (red_y>=INT2FIX(152)) {
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red_y -= INT2FIX(176);
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} else if (red_y<INT2FIX(-24)) {
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red_y += INT2FIX(176);
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}
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car_aff->pa = lut_cos(angle);
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car_aff->pb = -lut_sin(angle);
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car_aff->pc = lut_sin(angle);
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car_aff->pd = lut_cos(angle);
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red_car_aff->pa = lut_cos(red_angle);
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red_car_aff->pb = -lut_sin(red_angle);
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red_car_aff->pc = lut_sin(red_angle);
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red_car_aff->pd = lut_cos(red_angle);
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car->attr1 = OBJ_SIZE(1) | OBJ_X(FIX2INT(x));
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car->attr0 = OBJ_256_COLOR | OBJ_DOUBLE | OBJ_ROT_SCALE_ON | OBJ_Y(FIX2INT(y));
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red_car->attr1 = OBJ_SIZE(1) | OBJ_X(FIX2INT(red_x));
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red_car->attr0 = OBJ_256_COLOR | OBJ_DOUBLE | OBJ_ROT_SCALE_ON | OBJ_Y(FIX2INT(red_y));
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int fblue_speed = blue_speed >> 3;
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blue_x -= fblue_speed*lut_sin(blue_angle);
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blue_y -= fblue_speed*lut_cos(blue_angle);
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if (blue_x>=INT2FIX(232)) {
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blue_x -= INT2FIX(256);
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} else if (blue_x<INT2FIX(-24)) {
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blue_x += INT2FIX(256);
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}
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if (blue_y>=INT2FIX(152)) {
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blue_y -= INT2FIX(176);
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} else if (blue_y<INT2FIX(-24)) {
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blue_y += INT2FIX(176);
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}
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blue_car_aff->pa = lut_cos(blue_angle);
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blue_car_aff->pb = -lut_sin(blue_angle);
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blue_car_aff->pc = lut_sin(blue_angle);
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blue_car_aff->pd = lut_cos(blue_angle);
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blue_car->attr1 = OBJ_SIZE(1) | OBJ_ROT_SCALE(1) | OBJ_X(FIX2INT(blue_x));
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blue_car->attr0 = OBJ_256_COLOR | OBJ_DOUBLE | OBJ_ROT_SCALE_ON | OBJ_Y(FIX2INT(blue_y));
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// Update smoke cloud frames
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if ((frame & 3) == 3) {
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@ -171,12 +240,12 @@ int main(void)
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// place a new smoke cloud after car if driving
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// forwards
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if ((speed!=0) && ((frame & 1) == 1)) {
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if ((red_speed!=0) && ((frame & 1) == 1)) {
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for (i=0; i<NUMSMOKES; i++) {
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if (smoke_frame[i] == 6) {
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smoke_frame[i] = 0;
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smokes[i].attr1 = OBJ_X(FIX2INT(x)+12);
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smokes[i].attr0 = OBJ_256_COLOR | OBJ_Y(FIX2INT(y)+12);
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smokes[i].attr1 = OBJ_X(FIX2INT(red_x)+12);
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smokes[i].attr0 = OBJ_256_COLOR | OBJ_Y(FIX2INT(red_y)+12);
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break;
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}
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}
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@ -187,7 +256,7 @@ int main(void)
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}
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for (i=0; i<NUMSMOKES; i++)
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smokes[i].attr2 = OBJ_CHAR(520 + 2*smoke_frame[i]);
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smokes[i].attr2 = OBJ_CHAR(528 + 2*smoke_frame[i]);
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VBlankIntrWait();
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CpuFastSet(oe_buffer, OAM, COPY32 | sizeof(oe_buffer)/4);
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