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Cleaning up, added explosion assets
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@carrierdown
carrierdown committed Feb 18, 2020
1 parent b2917d5 commit 8c05680
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Showing 6 changed files with 113 additions and 74 deletions.
Binary file added eship.pcx
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Binary file added exp01.pcx
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Binary file added exp02.pcx
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Binary file added exp03.pcx
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187 changes: 113 additions & 74 deletions shooter.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -8,88 +8,56 @@

const short TRUE = 1;
const short FALSE = 0;
short quit = FALSE;
const short SHOT_DELAY = 10;
const short SHIP_WIDTH = 16;
const short SHIP_HEIGHT = 32;
const short SHIP_ANIMATION_TRESHOLD = 2;

short smallestNumber(short a, short b);
short largestNunber(short a, short b);
short largestNumber(short a, short b);
void loadAssets();
void initBullets();
void initVgaGraphicsMode();
void initMouse();
short checkShotFired(short shotDelay, short curMouseX, short curMouseY);
short updateBullets(short shotDelay, short shotVelocity);
void clearShip(short curMouseX, short curMouseY, signed short deltaX, signed short deltaY);

struct Bullet {
short x;
short y;
};

byte ship[5][512];
byte bullet[12];
signed char palette[768];
Bullet bullets[20];

int main(int argc, char *argv[])
{
static byte ship[5][512];
static byte bullet[12];
static signed char palette[768];
Bullet bullets[20];

for (short i = 0; i < 20; i++) {
bullets[i].x = 0;
bullets[i].y = 0;
}

short key = 0;

pcxRead("bullets.pcx", bullet, palette, 4, 3);
pcxRead("ship_ll.pcx", ship[0], palette, 16, 32);
pcxRead("ship_l.pcx", ship[1], palette, 16, 32);
pcxRead("ship.pcx", ship[2], palette, 16, 32);
pcxRead("ship_r.pcx", ship[3], palette, 16, 32);
pcxRead("ship_rr.pcx", ship[4], palette, 16, 32);

mode_13h();
set_pal(palette);
set_mouse_sens(20,16);
xlimit_mouse(8,300);
ylimit_mouse(167,167);
get_mouse_status();
initBullets();
loadAssets();
initVgaGraphicsMode();
initMouse();

short curMouseX = MOUSE_X, curMouseY = MOUSE_Y;
signed short deltaX = 0, deltaY = 0;
short moveWithAnimTreshold = 2;
unsigned short deltaX = 0, deltaY = 0;
short targetState = 2;
short curState = 2;
short freezeFrames = 0;

short SHOT_DELAY = 10;
short shotDelay = 0;
short shotVelocity = 4;

const short SHIP_WIDTH = 16;
const short SHIP_HEIGHT = 32;

short xOffset = 0;
short yOffset = 0;
short quit = FALSE;

while (quit == FALSE) {
if (shotDelay == 0 && BUTTON_STATE == 1)
{
short freeBulletSlot = -1;
for (short i = 0; i < 20; i++) {
if (bullets[i].y <= 0) {
freeBulletSlot = i;
break;
}
}
if (freeBulletSlot >= 0) {
bullets[freeBulletSlot].x = curMouseX + 6;
bullets[freeBulletSlot].y = curMouseY - 4;
shotDelay = SHOT_DELAY;
}
}
// update bullets
if (shotDelay > 0) shotDelay--;
for (short i = 0; i < 20; i++) {
if (bullets[i].y > 0) {
draw_box(bullets[i].x, bullets[i].y, 4, 3, 0);
bullets[i].y -= shotVelocity;
}
if (bullets[i].y > 0) {
put_block(bullets[i].x, bullets[i].y, 4, 3, bullet);
}
}
short key;

shotDelay = checkShotFired(shotDelay, curMouseX, curMouseY);
shotDelay = updateBullets(shotDelay, shotVelocity);

put_block(curMouseX, curMouseY, SHIP_WIDTH, SHIP_HEIGHT, ship[curState]);

Expand All @@ -99,25 +67,13 @@ int main(int argc, char *argv[])
deltaX = MOUSE_X - curMouseX;
deltaY = MOUSE_Y - curMouseY;

if (deltaX < 0) {
xOffset = SHIP_WIDTH;
} else {
xOffset = 0;
}
if (deltaY < 0) {
yOffset = SHIP_HEIGHT;
} else {
yOffset = 0;
}

draw_box(smallestNumber(curMouseX, MOUSE_X) + xOffset, curMouseY, abs(deltaX) + 1, SHIP_HEIGHT, 0);
draw_box(curMouseX, smallestNumber(curMouseY, MOUSE_Y) + yOffset, SHIP_WIDTH, abs(deltaY) + 1, 0);
clearShip(curMouseX, curMouseY, deltaX, deltaY);

curMouseX = MOUSE_X;
curMouseY = MOUSE_Y;

if (freezeFrames == 0) {
if (abs(deltaX) >= moveWithAnimTreshold) {
if (abs(deltaX) >= SHIP_ANIMATION_TRESHOLD) {
targetState = deltaX > 0 ? 0 : 4;
} else {
targetState = 2;
Expand Down Expand Up @@ -148,6 +104,89 @@ short smallestNumber(short a, short b) {
return a < b ? a : b;
}

short largestNunber(short a, short b) {
short largestNumber(short a, short b) {
return a > b ? a : b;
}

void loadAssets()
{
pcxRead("bullets.pcx", bullet, palette, 4, 3);
pcxRead("ship_ll.pcx", ship[0], palette, 16, 32);
pcxRead("ship_l.pcx", ship[1], palette, 16, 32);
pcxRead("ship.pcx", ship[2], palette, 16, 32);
pcxRead("ship_r.pcx", ship[3], palette, 16, 32);
pcxRead("ship_rr.pcx", ship[4], palette, 16, 32);
}

void initBullets()
{
for (short i = 0; i < 20; i++) {
bullets[i].x = 0;
bullets[i].y = 0;
}
}

void initVgaGraphicsMode()
{
mode_13h();
set_pal(palette);
}

void initMouse()
{
set_mouse_sens(20,16);
xlimit_mouse(8,300);
ylimit_mouse(167,167);
get_mouse_status();
}

short checkShotFired(short shotDelay, short curMouseX, short curMouseY)
{
if (shotDelay == 0 && BUTTON_STATE == 1)
{
short freeBulletSlot = -1;
for (short i = 0; i < 20; i++) {
if (bullets[i].y <= 0) {
freeBulletSlot = i;
break;
}
}
if (freeBulletSlot >= 0) {
bullets[freeBulletSlot].x = curMouseX + 6;
bullets[freeBulletSlot].y = curMouseY - 4;
shotDelay = SHOT_DELAY;
}
}
return shotDelay;
}

short updateBullets(short shotDelay, short shotVelocity)
{
if (shotDelay > 0) shotDelay--;
for (short i = 0; i < 20; i++) {
if (bullets[i].y > 0) {
draw_box(bullets[i].x, bullets[i].y, 4, 3, 0);
bullets[i].y -= shotVelocity;
}
if (bullets[i].y > 0) {
put_block(bullets[i].x, bullets[i].y, 4, 3, bullet);
}
}
return shotDelay;
}

void clearShip(short curMouseX, short curMouseY, signed short deltaX, signed short deltaY)
{
short xOffset = 0,
yOffset = 0;

if (deltaX < 0) {
xOffset = SHIP_WIDTH;
}
if (deltaY < 0) {
yOffset = SHIP_HEIGHT;
}

draw_box(smallestNumber(curMouseX, MOUSE_X) + xOffset, curMouseY, abs(deltaX) + 1, SHIP_HEIGHT, 0);
draw_box(curMouseX, smallestNumber(curMouseY, MOUSE_Y) + yOffset, SHIP_WIDTH, abs(deltaY) + 1, 0);
}

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