From 7a870c4ade6f9dc1acd99106b95f3fe92deb607f Mon Sep 17 00:00:00 2001 From: tangstad Date: Sun, 4 Dec 2005 18:38:35 +0000 Subject: [PATCH] Use struct for bundling car settings. --- gba/cartest/src/cartest.c | 184 +++++++++++++++++++------------------- 1 file changed, 94 insertions(+), 90 deletions(-) diff --git a/gba/cartest/src/cartest.c b/gba/cartest/src/cartest.c index a92ab56..88fdfdb 100644 --- a/gba/cartest/src/cartest.c +++ b/gba/cartest/src/cartest.c @@ -30,7 +30,7 @@ typedef s32 FIXED; // 32bit FIXED in 24.8 format #define lut_cos(x) _sinLUT[(x + (SIN_SIZE>>2)) & SIN_MASK] -#define NUMSMOKES 20 +#define NUMSMOKES 30 u16 PaletteBuffer[256]; OBJATTR oe_buffer[2+NUMSMOKES+10]; @@ -45,6 +45,12 @@ void VblankInterrupt() ScanKeys(); } +typedef struct { + FIXED x, y; + int speed, angle; +} Car; + + int main(void) { OBJATTR*red_car = &oe_buffer[0]; @@ -97,137 +103,134 @@ int main(void) smoke_frame[i] = 6; } - FIXED red_x = INT2FIX(102); - FIXED red_y = INT2FIX(72); - FIXED blue_x = INT2FIX(122); - FIXED blue_y = INT2FIX(72); - int red_speed = 0; - int red_angle = 0; - int blue_speed = 0; - int blue_angle = 0; + Car red, blue; + + red.x = INT2FIX(102); + red.y = INT2FIX(72); + blue.x = INT2FIX(122); + blue.y = INT2FIX(72); + red.speed = 0; + red.angle = 0; + blue.speed = 0; + blue.angle = 0; while (1) { if (KeysHeld() & KEY_RIGHT) { - red_angle -= 8; + red.angle -= 8; } else if (KeysHeld() & KEY_LEFT) { - red_angle += 8; + red.angle += 8; } - if (red_angle < 0) { - red_angle += 512; - } else if (red_angle >= 512) { - red_angle -= 512; + if (red.angle < 0) { + red.angle += 512; + } else if (red.angle >= 512) { + red.angle -= 512; } if (KeysHeld() & KEY_A) { - blue_angle -= 8; + blue.angle -= 8; } else if (KeysHeld() & KEY_B) { - blue_angle += 8; + blue.angle += 8; } - if (blue_angle < 0) { - blue_angle += 512; - } else if (blue_angle >= 512) { - blue_angle -= 512; + if (blue.angle < 0) { + blue.angle += 512; + } else if (blue.angle >= 512) { + blue.angle -= 512; } if (KeysHeld() & KEY_L) { - if ((red_speed<30) && (red_speed>=0)) { + if ((red.speed<30) && (red.speed>=0)) { // slow speedup - red_speed += 1; - } else if (red_speed<0) { + red.speed += 1; + } else if (red.speed<0) { // break if we're going backward - red_speed += 2; + red.speed += 2; } } if (KeysHeld() & KEY_R) { - if ((blue_speed<30) && (blue_speed>=0)) { + if ((blue.speed<30) && (blue.speed>=0)) { // slow speedup - blue_speed += 1; - } else if (blue_speed<0) { + blue.speed += 1; + } else if (blue.speed<0) { // break if we're going backward - blue_speed += 2; + blue.speed += 2; } } /* Disabled */ /* if (KeysHeld() & KEY_B) { */ -/* if ((red_speed>=-5) && (red_speed<=0)) { */ +/* if ((red.speed>=-5) && (red.speed<=0)) { */ /* // slow speedup */ -/* red_speed -= 1; */ -/* } else if (red_speed>0) { */ +/* red.speed -= 1; */ +/* } else if (red.speed>0) { */ /* // break if we're going forward */ -/* red_speed -= 2; */ +/* red.speed -= 2; */ /* } */ /* } */ // slow down if we're not doing anything if (!(KeysHeld() & KEY_L)) { - if (red_speed>0) { - red_speed -= 1; - } else if (red_speed<0) { - red_speed += 1; + if (red.speed>0) { + red.speed -= 1; + } else if (red.speed<0) { + red.speed += 1; } } if (!(KeysHeld() & KEY_R)) { - if (blue_speed>0) { - blue_speed -= 1; - } else if (blue_speed<0) { - blue_speed += 1; + if (blue.speed>0) { + blue.speed -= 1; + } else if (blue.speed<0) { + blue.speed += 1; } } - int fred_speed = red_speed >> 3; - - red_x -= fred_speed*lut_sin(red_angle); - red_y -= fred_speed*lut_cos(red_angle); + red.x -= (red.speed >> 3)*lut_sin(red.angle); + red.y -= (red.speed >> 3)*lut_cos(red.angle); - if (red_x>=INT2FIX(232)) { - red_x -= INT2FIX(256); - } else if (red_x=INT2FIX(232)) { + red.x -= INT2FIX(256); + } else if (red.x=INT2FIX(152)) { - red_y -= INT2FIX(176); - } else if (red_y=INT2FIX(152)) { + red.y -= INT2FIX(176); + } else if (red.ypa = lut_cos(red_angle); - red_car_aff->pb = -lut_sin(red_angle); - red_car_aff->pc = lut_sin(red_angle); - red_car_aff->pd = lut_cos(red_angle); + red_car_aff->pa = lut_cos(red.angle); + red_car_aff->pb = -lut_sin(red.angle); + red_car_aff->pc = lut_sin(red.angle); + red_car_aff->pd = lut_cos(red.angle); - red_car->attr1 = OBJ_SIZE(1) | OBJ_X(FIX2INT(red_x)); - red_car->attr0 = OBJ_256_COLOR | OBJ_DOUBLE | OBJ_ROT_SCALE_ON | OBJ_Y(FIX2INT(red_y)); + red_car->attr1 = OBJ_SIZE(1) | OBJ_X(FIX2INT(red.x)); + red_car->attr0 = OBJ_256_COLOR | OBJ_DOUBLE | OBJ_ROT_SCALE_ON | OBJ_Y(FIX2INT(red.y)); + blue.x -= (blue.speed >> 3)*lut_sin(blue.angle); + blue.y -= (blue.speed >> 3)*lut_cos(blue.angle); - int fblue_speed = blue_speed >> 3; - - blue_x -= fblue_speed*lut_sin(blue_angle); - blue_y -= fblue_speed*lut_cos(blue_angle); - - if (blue_x>=INT2FIX(232)) { - blue_x -= INT2FIX(256); - } else if (blue_x=INT2FIX(232)) { + blue.x -= INT2FIX(256); + } else if (blue.x=INT2FIX(152)) { - blue_y -= INT2FIX(176); - } else if (blue_y=INT2FIX(152)) { + blue.y -= INT2FIX(176); + } else if (blue.ypa = lut_cos(blue_angle); - blue_car_aff->pb = -lut_sin(blue_angle); - blue_car_aff->pc = lut_sin(blue_angle); - blue_car_aff->pd = lut_cos(blue_angle); + blue_car_aff->pa = lut_cos(blue.angle); + blue_car_aff->pb = -lut_sin(blue.angle); + blue_car_aff->pc = lut_sin(blue.angle); + blue_car_aff->pd = lut_cos(blue.angle); - blue_car->attr1 = OBJ_SIZE(1) | OBJ_ROT_SCALE(1) | OBJ_X(FIX2INT(blue_x)); - blue_car->attr0 = OBJ_256_COLOR | OBJ_DOUBLE | OBJ_ROT_SCALE_ON | OBJ_Y(FIX2INT(blue_y)); + blue_car->attr1 = OBJ_SIZE(1) | OBJ_ROT_SCALE(1) | OBJ_X(FIX2INT(blue.x)); + blue_car->attr0 = OBJ_256_COLOR | OBJ_DOUBLE | OBJ_ROT_SCALE_ON | OBJ_Y(FIX2INT(blue.y)); // Update smoke cloud frames if ((frame & 3) == 3) { @@ -240,21 +243,22 @@ int main(void) // place a new smoke cloud after car if driving // forwards - if ((red_speed!=0) && ((frame & 1) == 1)) { - for (i=0; i=NUMSMOKES) { - next_smoke = 1; + next_smoke += 1; + if ((blue.speed!=0) && ((frame & 1) == 1)) { + smoke_frame[next_smoke] = 0; + smokes[next_smoke].attr1 = OBJ_X(FIX2INT(blue.x)+12); + smokes[next_smoke].attr0 = OBJ_256_COLOR | OBJ_Y(FIX2INT(blue.y)+12); } + next_smoke += 1; + if (next_smoke>=NUMSMOKES) { + next_smoke = 0; + } for (i=0; i