我正在使用Allegro在我们的专业中为我们的最终项目编写游戏，但是我遇到了一些碰撞问题。我的游戏基本上是战舰，我所做的是在加载屏幕后，会出现一个屏幕，您可以使用箭头键选择船只的坐标并用空格键锁定。如果您选择的坐标已被占用，则空格键不起作用。
我的问题是在放置之前我无法检查船只的长度和宽度是否有碰撞。只有当您已经放置船舶且下一艘船舶可以与其他船舶重叠时，才考虑船舶的长度和宽度。我尝试了一切，但我遇到了一些问题。不仅如此，即使它是空的，也不能选择网格的某些部分。
void shipplacement(){
//something like a cursor for ship placement
shipx = 0;
shipy = 0;
while(!placed)
{
ALLEGRO_EVENT ev;
al_wait_for_event(prepqueue, &ev);
if(ev.type == ALLEGRO_EVENT_KEY_DOWN) {
switch(ev.keyboard.keycode) {
case ALLEGRO_KEY_UP:
key[KEY_UP] = true;
break;
case ALLEGRO_KEY_DOWN:
key[KEY_DOWN] = true;
break;
case ALLEGRO_KEY_LEFT:
key[KEY_LEFT] = true;
break;
case ALLEGRO_KEY_RIGHT:
key[KEY_RIGHT] = true;
break;
case ALLEGRO_KEY_SPACE:
xcheck(); // checks the coordinates of the ship controlled
tst(); // checks for collision and if space bar should work
break;
}
}
else if(ev.type == ALLEGRO_EVENT_KEY_UP) {
switch(ev.keyboard.keycode) {
case ALLEGRO_KEY_UP:
key[KEY_UP] = false;
break;
case ALLEGRO_KEY_DOWN:
key[KEY_DOWN] = false;
break;
case ALLEGRO_KEY_LEFT:
key[KEY_LEFT] = false;
break;
case ALLEGRO_KEY_RIGHT:
key[KEY_RIGHT] = false;
break;
}
}
if(redraw && al_is_event_queue_empty(prepqueue)){
if (shippl[1]){
//redraw the background and draw the "selector"
}
else if (shippl[2]){
//redraw the background and draw the new "selector" and the placed ship.
}
else if (shippl[3]){
//redraw the background and draw the new "selector" and the placed ships.
}
else if (shippl[4]){
//redraw the background and draw the new "selector" and the placed ships.
}
else if (shippl[5]){
//redraw the background and draw the new "selector" and the placed ships.
}
redraw = false;
al_flip_display();}
}
}
void tst(){
if(logic == 0){
makeittrue();
shippl[count] = false;
shipfx[count] = shipx;
shipfy[count] = shipy;
count++;
logic++;
shipx = 0;
shipy = 0;
}
else if(logic == 1){
if(!s1[xholder][yholder] && !s1[xholder][y2] && !s1[xholder][y3] && !s1[xholder][y4]){
makeittrue();
shippl[count] = false;
shipfx[count] = shipx;
shipfy[count] = shipy;
count++;
logic++;
shipx = 0;
shipy = 0;
}
}
else if(logic == 2){
if(!s2[xholder][yholder] && !s2[xholder][y2] && !s2[xholder][y3] && !s1[xholder][yholder] && !s1[xholder][y2] && !s1[xholder][y3] && !s1[xholder][y4]){
makeittrue();
shippl[count] = false;
shipfx[count] = shipx;
shipfy[count] = shipy;
count++;
logic++;
shipx = 0;
shipy = 0;
}
}
else if(logic == 3){
if(!s3[xholder][yholder] && !s3[x2][yholder] && !s3[x3][yholder] && !s2[xholder][yholder] && !s2[xholder][y2] && !s2[xholder][y3] && !s1[xholder][yholder] && !s1[xholder][y2] && !s1[xholder][y3] && !s1[xholder][y4]){
makeittrue();
shippl[count] = false;
shipfx[count] = shipx;
shipfy[count] = shipy;
count++;
logic++;
shipx = 0;
shipy = 0;
}
}
else if(logic == 4){
if(!s4[xholder][yholder] && !s4[xholder][y2] && !s3[xholder][yholder] && !s3[x2][yholder] && !s3[x3][yholder] && !s2[xholder][yholder] && !s2[xholder][y2] && !s2[xholder][y3] && !s1[xholder][yholder] && !s1[xholder][y2] && !s1[xholder][y3] && !s1[xholder][y4]){
makeittrue();
shippl[count] = false;
shipfx[count] = shipx;
shipfy[count] = shipy;
count++;
logic++;
shipx = 0;
shipy = 0;
}
}
}
void makeittrue(){
// s1 is ship1 with length of 4 blocks
// s2 is ship2 with length of 3 blocks
// s3 is ship3 with width of 3 blocks
// s4 is ship4 with length of 2 blocks
// s5 is ship5 with width of 2 blocks
if(count == 1){
y2 = yholder + 1;
y3 = yholder + 2;
y4 = yholder + 3;
s1[xholder][yholder] = true;
s1[xholder][y2] = true;
s1[xholder][y3] = true;
s1[xholder][y4] = true;
placeflag[xholder][yholder] = true;
placeflag[xholder][y2] = true;
placeflag[xholder][y3] = true;
placeflag[xholder][y4] = true;
}
else if(count == 2){
y2 = yholder + 1;
y3 = yholder + 2;
s2[xholder][yholder] = true;
s2[xholder][y2] = true;
s2[xholder][y3] = true;
placeflag[xholder][yholder] = true;
placeflag[xholder][y2] = true;
placeflag[xholder][y3] = true;
}
else if(count == 3){
x2 = xholder + 1;
x3 = xholder + 2;
s3[xholder][yholder] = true;
s3[x2][yholder] = true;
s3[x3][yholder] = true;
placeflag[xholder][yholder] = true;
placeflag[x2][yholder] = true;
placeflag[x3][yholder] = true;
}
else if(count == 4){
y2 = yholder + 1;
s4[xholder][yholder] = true;
s4[xholder][y2] = true;
placeflag[xholder][yholder] = true;
placeflag[xholder][y2] = true;
}
else if(count == 5){
x2 = xholder + 1;
s5[xholder][yholder] = true;
s5[x2][yholder] = true;
placeflag[xholder][yholder] = true;
placeflag[x2][yholder] = true;
}
}
请帮帮我。我没有想法。
修改
忘记提到网格是10x10。
注意：使用FF船精灵导致我还没有完成自己的创作。
答案 0 :(得分：0)
所以我似乎只需要从编码中休息一下。我设法通过为每艘船制作单独的变量来修复它，这样我就可以准确地检查它的每一部分并避免重载变量。
