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Minor refactoring.

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This commit is contained in:
jespergravgaard 2018-12-04 23:58:25 +01:00
parent 33d1b90974
commit 7c74fd93d0
1 changed files with 22 additions and 20 deletions
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42
src/test/kc/examples/tetris/tetris.kc
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@ -36,13 +36,13 @@ byte current_piece_color = 0;
byte current_xpos = 3;
byte current_ypos = 0;
// The rate of moving down the current piece (number of frames between moves if movedown is not not forced)
// The rate of moving down the current piece (number of frames between moves if movedown is not forced)
const byte current_movedown_slow = 50;
// The rate of moving down the current piece fast (number of frames between moves if movedown is not not forced)
// The rate of moving down the current piece fast (number of frames between moves if movedown is not forced)
const byte current_movedown_fast = 5;
// Counts down til next movedown of current piece
// Counts up to the next movedown of current piece
byte current_movedown_counter = 0;
// The screen
@ -54,7 +54,8 @@ byte*[PLAYFIELD_LINES+3] screen_lines;
void main() {
sid_rnd_init();
asm { sei }
init();
render_init();
tables_init();
spawn_current();
render_playfield();
render_current();
@ -71,10 +72,8 @@ void main() {
render += play_move_leftright(key_event);
render += play_move_rotate(key_event);
if(render!=0) {
(*BORDERCOL)++;
render_playfield();
render_current();
(*BORDERCOL)--;
}
(*BORDERCOL)--;
}
@ -149,7 +148,7 @@ byte play_move_rotate(byte key_event) {
} else {
return 0;
}
if(collision(current_xpos, current_ypos, orientation) == 0) {
if(collision(current_xpos, current_ypos, orientation) == COLLISION_NONE) {
current_orientation = orientation;
current_piece_gfx = current_piece + current_orientation;
return 1;
@ -223,12 +222,10 @@ void lock_current() {
// Spawn a new piece
void spawn_current() {
// Pick a random piece
(*BORDERCOL)++;
byte piece_idx = 7;
while(piece_idx==7) {
piece_idx = sid_rnd()&7;
}
(*BORDERCOL)--;
current_piece = PIECES[piece_idx<<1];
current_orientation = 0;
current_piece_gfx = current_piece + current_orientation;
@ -279,17 +276,8 @@ void remove_line(byte ypos) {
}
}
// Initialize the screen and data tables
void init() {
// Clear the screen
fill(SCREEN,1000,$a0);
fill(COLS,1000,BLACK);
// Initialize the screen line pointers;
byte* li = COLS + 40 + 15;
for(byte i:0..PLAYFIELD_LINES+2) {
screen_lines[i<<1] = li;
li += 40;
}
// Initialize data tables
void tables_init() {
// Initialize the playfield line pointers;
byte idx = 0;
byte* pli = playfield;
@ -300,6 +288,20 @@ void init() {
idx += PLAYFIELD_COLS;
}
playfield_lines_idx[PLAYFIELD_LINES] = PLAYFIELD_COLS*PLAYFIELD_LINES;
}
// Initialize rendering
void render_init() {
// Clear the screen
fill(SCREEN,1000,$a0);
fill(COLS,1000,BLACK);
// Initialize the screen line pointers;
byte* li = COLS + 40 + 15;
for(byte i:0..PLAYFIELD_LINES+2) {
screen_lines[i<<1] = li;
li += 40;
}
// Prepare the playfield frame
byte* line = COLS + 14;
for(byte l:0..PLAYFIELD_LINES+1) {