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main.c
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main.c
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/*
* File: main.c
* Author: Jayson Rhynas, 20299211
* Created: January 13, 2011
*
* A simple tower defense game.
*
* Some code from lecture material by Edward Lank
*/
#include <X11/Xlib.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/time.h>
#include <unistd.h>
#include <string.h>
#include "main.h"
#include "enemies.h"
#include "defenses.h"
#include "list.h"
/* X Vars */
Display* display;
Window window;
Pixmap buffer;
/* GC Styles */
GC gc; // default (black on white)
GC floorGC;
GC enemyGC;
GC lineGC; // assumed to always be 1px black - if changed, must change back
/* System Vars */
long long old_time;
int mouseX, mouseY;
XFontStruct* font_info[3];
int showSplash;
/* Game Vars */
int money, points;
Castle castle;
List *eList;
List *nextWave;
List *bList;
Defense *turretArray[3][8];
Defense *trapArray[3][8];
long long nextWaveTime;
Enemy *thumbEnemies[NUM_ENEMY_TYPES];
List *buttonList; // all buttons
List *systemButtonList;
List *shopButtonList;
List *turretButtonList;
List *trapButtonList;
List *castleButtonList;
Button *pushedButtons[NUM_GROUPS]; // useed to simulate radio buttons
Button *pauseButton; // used to check if game is paused
Button *speedButton;
Button *deleteButton;
Button *nextWaveButton;
Defense *selection = NULL;
/* Color vars */
Colormap screen_colormap;
XColor red, brown, blue, yellow, green, grey, dark_grey, grey_10, grey_25, grey_50, brick_red, black, white;
int main(){
printFonts();
windowInit();
createGraphicsContext();
registerForEvents();
initVars();
splashScreen();
eventLoop();
gameOver();
}
/* System Initialization */
void initVars() {
int i, j, id;
Enemy *e;
Defense *d;
Castle *c;
Button *b;
srandom(getpid());
showSplash = 1;
old_time = getTime();
money = 1000;
points = 0;
castle.type = WOOD;
castle.curHealth = 1000;
castle.maxHealth = 1000;
castle.showHealth = 1;
for (i = 0; i < NUM_ENEMY_TYPES; i++) {
thumbEnemies[i] = createEnemy(i, 0, i);
}
bList = listCreate(BULLET);
eList = listCreate(ENEMY);
createRandomWave();
for (i = 0; i < NUM_GROUPS; i++) {
pushedButtons[i] = NULL;
}
buttonList = listCreate(BUTTON);
systemButtonList = listCreate(BUTTON);
b = createButton(WIN_W - 30, 380, 20, 20, "X", NULL, 1, 0, -1, &quit);
listAppend(systemButtonList, b);
listAppend(buttonList, b);
b = createButton(WIN_W - 60, 380, 20, 20, "||", NULL, 1, 1, -1, NULL);
pauseButton = b;
listAppend(systemButtonList, b);
listAppend(buttonList, b);
b = createButton(WIN_W - 90, 380, 20, 20, ">", NULL, 1, 2, -1, NULL);
speedButton = b;
listAppend(systemButtonList, b);
listAppend(buttonList, b);
b = createButton(390, 380, 100, 20, "Delete", NULL, 1, 3, -1, deleteSelection);
deleteButton = b;
listAppend(systemButtonList, b);
listAppend(buttonList, b);
b = createButton(510, 380, 100, 20, "Send Next Wave", NULL, 1, 4, -1, sendAndCreateWave);
nextWaveButton = b;
listAppend(systemButtonList, b);
listAppend(buttonList, b);
shopButtonList = listCreate(BUTTON);
b = createButton(10, 410, 100, 30, "Turrets", NULL, 1, TURRET, SHOP, NULL);
b->pushed = 1;
pushedButtons[SHOP] = b;
listAppend(shopButtonList, b);
listAppend(buttonList, b);
b = createButton(10, 445, 100, 30, "Traps", NULL, 1, TRAP, SHOP, NULL);
listAppend(shopButtonList, b);
listAppend(buttonList, b);
b = createButton(10, 480, 100, 30, "Door", NULL, 1, CASTLE, SHOP, NULL);
listAppend(shopButtonList, b);
listAppend(buttonList, b);
trapButtonList = listCreate(BUTTON);
for (i = 0; i < NUM_TRAPS; i++) {
d = createDefense(i, -1, i, i);
b = createButton(i*110 + 120, 410, 100, 100, NULL, d, 0, i, TRAP, NULL);
listAppend(trapButtonList, b);
listAppend(buttonList, b);
}
turretButtonList = listCreate(BUTTON);
for (i = 0; i < NUM_TURRETS_PLUS_GUN - GUN; i++) {
d = createDefense(i + GUN, -1, i, i);
b = createButton(i*110 + 120, 410, 100, 100, NULL, d, 0, i, TURRET, NULL);
listAppend(turretButtonList, b);
listAppend(buttonList, b);
}
castleButtonList = listCreate(BUTTON);
for (i = 0; i < NUM_CASTLE; i++) {
c = (Castle*)malloc(sizeof(Castle));
c->type = i;
c->maxHealth = c->curHealth = 1;
c->showHealth = 0;
b = createButton(i*110 + 120, 410, 100, 100, NULL, c, 0, i, CASTLE, NULL);
listAppend(castleButtonList, b);
listAppend(buttonList, b);
}
}
/* X Init Functions */
void colorInit() {
screen_colormap = DefaultColormap(display, DefaultScreen(display));
int rc;
rc = XAllocNamedColor(display, screen_colormap, "red", &red, &red);
if (rc == 0) {
fprintf(stderr, "XAllocNamedColor - failed to allocated 'red' color.\n");
exit(1);
}
rc = XAllocNamedColor(display, screen_colormap, "brown", &brown, &brown);
if (rc == 0) {
fprintf(stderr, "XAllocNamedColor - failed to allocated 'brown' color.\n");
exit(1);
}
rc = XAllocNamedColor(display, screen_colormap, "blue", &blue, &blue);
if (rc == 0) {
fprintf(stderr, "XAllocNamedColor - failed to allocated 'blue' color.\n");
exit(1);
}
rc = XAllocNamedColor(display, screen_colormap, "yellow", &yellow, &yellow);
if (rc == 0) {
fprintf(stderr, "XAllocNamedColor - failed to allocated 'yellow' color.\n");
exit(1);
}
rc = XAllocNamedColor(display, screen_colormap, "green", &green, &green);
if (rc == 0) {
fprintf(stderr, "XAllocNamedColor - failed to allocated 'green' color.\n");
exit(1);
}
rc = XAllocNamedColor(display, screen_colormap, "grey", &grey, &grey);
if (rc == 0) {
fprintf(stderr, "XAllocNamedColor - failed to allocated 'grey' color.\n");
exit(1);
}
rc = XAllocNamedColor(display, screen_colormap, "black", &black, &black);
if (rc == 0) {
fprintf(stderr, "XAllocNamedColor - failed to allocated 'black' color.\n");
exit(1);
}
rc = XAllocNamedColor(display, screen_colormap, "white", &white, &white);
if (rc == 0) {
fprintf(stderr, "XAllocNamedColor - failed to allocated 'white' color.\n");
exit(1);
}
rc = XAllocNamedColor(display, screen_colormap, "dark grey", &dark_grey, &dark_grey);
if (rc == 0) {
fprintf(stderr, "XAllocNamedColor - failed to allocated 'dark_grey' color.\n");
exit(1);
}
grey_10.red = 6553;
grey_10.green = 6553;
grey_10.blue = 6553;
rc = XAllocColor(display, screen_colormap, &grey_10);
if (rc == 0) {
fprintf(stderr, "XAllocColor - failed to allocated 'grey_10' (6553, 6553, 6553) color.\n");
exit(1);
}
grey_25.red = 16384;
grey_25.green = 16384;
grey_25.blue = 16384;
rc = XAllocColor(display, screen_colormap, &grey_25);
if (rc == 0) {
fprintf(stderr, "XAllocColor - failed to allocated 'grey_25' (16384, 16384, 16384) color.\n");
exit(1);
}
grey_50.red = 32768;
grey_50.green = 32768;
grey_50.blue = 32768;
rc = XAllocColor(display, screen_colormap, &grey_50);
if (rc == 0) {
fprintf(stderr, "XAllocColor - failed to allocated 'grey_50' (32768, 32768, 32768) color.\n");
exit(1);
}
brick_red.red = 38293;
brick_red.green = 0;
brick_red.blue = 5140;
rc = XAllocColor(display, screen_colormap, &brick_red);
if (rc == 0) {
fprintf(stderr, "XAllocColor - failed to allocated 'brick_red' (38293, 0, 5140) color.\n");
exit(1);
}
}
void windowInit(){
int depth;
display = XOpenDisplay(":0");
if (display == NULL) {
printf("Cannot connect\n");
exit (-1);
}
colorInit();
int screennum = DefaultScreen(display);
long background = grey.pixel; //WhitePixel(display, screennum);
long foreground = BlackPixel(display, screennum);
window = XCreateSimpleWindow(display, DefaultRootWindow(display), 10, 10, WIN_W, WIN_H, 2, foreground, background);
XMapRaised(display, window);
XSync(display, False);
depth = DefaultDepth(display, DefaultScreen(display));
buffer = XCreatePixmap(display, DefaultRootWindow(display), WIN_W, WIN_H, depth);
}
void createGraphicsContext(){
XGCValues values;
unsigned long value_mask;
gc = XCreateGC(display, buffer, 0, 0);
char* font_name = "*-helvetica-medium-r-*-12-*";
font_info[0] = XLoadQueryFont(display, font_name);
if (!font_info[0]) {
fprintf(stderr, "XLoadQueryFont: failed loading font '%s'\n", font_name);
}
font_name = "*-helvetica-bold-r-*-12-*";
font_info[1] = XLoadQueryFont(display, font_name);
if (!font_info[1]) {
fprintf(stderr, "XLoadQueryFont: failed loading font '%s'\n", font_name);
}
font_name = "*-helvetica-bold-r-*-34-*";
font_info[2] = XLoadQueryFont(display, font_name);
if (!font_info[2]) {
fprintf(stderr, "XLoadQueryFont: failed loading font '%s'\n", font_name);
}
XSetFont(display, gc, font_info[0]->fid);
enemyGC = XCreateGC(display, buffer, 0, 0);
lineGC = XCreateGC(display, buffer, 0, 0);
XSetForeground(display, lineGC, black.pixel);
floorGC = XCreateGC(display, buffer, 0, 0);
XSetLineAttributes(display, floorGC, 20, LineSolid, CapRound, JoinRound);
}
void registerForEvents(){
XSelectInput(display, window,
ButtonPressMask
|ButtonReleaseMask
|KeyPressMask
|ExposureMask);
}
void splashScreen(){
long long cur_time;
while(showSplash){
if (XPending(display)) {
handleEvent();
}
long long cur_time;
cur_time = getTime();
if (abs(cur_time - old_time) > 40) {
old_time = cur_time;
redrawScreen();
}
usleep(1000);
}
}
void eventLoop(){
while(castle.curHealth > 0){
if (XPending(display)) {
handleEvent();
}
programAnimation();
usleep(1000);
}
}
void gameOver() {
XEvent an_event;
XSetForeground(display, gc, grey.pixel);
XFillRectangle(display, buffer, gc, 50, 50, WIN_W - 100, 260);
XDrawRectangle(display, buffer, lineGC, 50, 50, WIN_W - 100, 260);
XSetForeground(display, gc, black.pixel);
drawText("GAME OVER", WIN_W / 2, 360/2, 2, CENTER, CENTER);
drawText("Press any key to exit", WIN_W/2, 290, 0, CENTER, BOTTOM);
// draw buffer to screen
XCopyArea(display, buffer, window, gc, 0, 0, WIN_W, WIN_H, 0, 0);
while(1) {
if (XPending(display)) {
XNextEvent(display, &an_event);
if (an_event.type == KeyPress) {
quit();
}
}
usleep(1000);
}
}
void handleEvent(){
XEvent an_event;
KeySym key_symbol;
XNextEvent(display, &an_event);
switch (an_event.type) {
case KeyPress:
key_symbol = XKeycodeToKeysym(display, an_event.xkey.keycode, 0);
switch (key_symbol) {
case XK_q:
quit();
case XK_p:
if (showSplash == 0) {
if (pauseButton->pushed) {
pauseButton->pushed = 0;
} else {
pauseButton->pushed = 1;
}
}
break;
case XK_s:
if (showSplash == 0) {
if (speedButton->pushed) {
speedButton->pushed = 0;
} else {
speedButton->pushed = 1;
}
}
break;
case XK_n:
if (showSplash == 0) {
sendAndCreateWave();
}
break;
case XK_d:
if (showSplash == 0) {
deleteSelection();
}
break;
case XK_m:
if (showSplash == 0) {
money += 1000;
}
break;
case XK_space:
if (showSplash) {
showSplash = 0;
} else {
if ((an_event.xkey.x >= 0 && an_event.xkey.x <= WIN_W) && (an_event.xkey.y >= 0 && an_event.xkey.y <= 360)) { // click was on stage
if (pushedButtons[SHOP] != NULL && pushedButtons[SHOP]->id == TURRET && pushedButtons[TURRET] != NULL) {
placeDefense(an_event.xkey.x, an_event.xkey.y, ((Defense*)(pushedButtons[TURRET]->item))->type);
} else if (pushedButtons[SHOP] != NULL && pushedButtons[SHOP]->id == TRAP && pushedButtons[TRAP] != NULL) {
placeDefense(an_event.xkey.x, an_event.xkey.y, ((Defense*)(pushedButtons[TRAP]->item))->type);
}
}
}
break;
}
break;
case Expose:
redrawScreen();
break;
case ButtonPress:
if (showSplash == 0) {
if ((an_event.xbutton.x >= 0 && an_event.xbutton.x <= WIN_W) && (an_event.xbutton.y >= 0 && an_event.xbutton.y <= 360)) { // click was on stage
if ((an_event.xbutton.x >= 20 && an_event.xbutton.x <= 80) && (an_event.xbutton.y >= 20 && an_event.xbutton.y <= 110)) { // click was on castle/door
if (pushedButtons[SHOP] != NULL && pushedButtons[SHOP]->id == CASTLE && pushedButtons[CASTLE] != NULL) {
upgradeCastle(pushedButtons[CASTLE]->id, &castle);
}
}
selectDefense(an_event.xbutton.x, an_event.xbutton.y);
if (selection == NULL) {
// there was nothing there, try to place a defense
if (pushedButtons[SHOP] != NULL && pushedButtons[SHOP]->id == TURRET && pushedButtons[TURRET] != NULL) {
placeDefense(an_event.xbutton.x, an_event.xbutton.y, ((Defense*)(pushedButtons[TURRET]->item))->type);
} else if (pushedButtons[SHOP] != NULL && pushedButtons[SHOP]->id == TRAP && pushedButtons[TRAP] != NULL) {
placeDefense(an_event.xbutton.x, an_event.xbutton.y, ((Defense*)(pushedButtons[TRAP]->item))->type);
}
}
} else { // click was on controls
clickUI(an_event.xbutton.x, an_event.xbutton.y);
}
}
break;
case ButtonRelease:
deleteButton->pushed = 0;
nextWaveButton->pushed = 0;
break;
}
}
void quit() {
pauseButton->pushed = 1;
XFreePixmap(display, buffer);
XCloseDisplay(display);
listDelete(eList);
if (nextWave != NULL) {
listDelete(nextWave);
}
listDelete(bList);
listForEach(buttonList, freeButtonPointers);
listDelete(buttonList);
free(systemButtonList);
free(shopButtonList);
free(trapButtonList);
free(turretButtonList);
free(castleButtonList);
exit(0);
}
void drawSplash() {
int i;
Info info;
XSetForeground(display, gc, black.pixel);
drawText("Corridor Defense", WIN_W/2, 20, 2, CENTER, TOP);
drawText("Jayson Rhynas, 20299211", WIN_W/2, 55, 0, CENTER, TOP);
drawText("Instructions:", 50, 100, 1, LEFT, TOP);
char *instructions[] = {" - click on an item in the store to see a description",
" - place turrets and traps by selecting an item in the store",
" and clicking a grid spot in the playing field. Each spot can",
" hold at most 1 turret and 1 trap. Items can also be placed",
" by holding space and moving the mouse over the playing field",
" (be careful - this can be expensive!)",
" - delete items by selecting the desired item on the field and",
" clicking the Delete button or pressing d",
" - upgrade your door by selecting an upgrade from the Door menu",
" and then clicking on the door",
" - the game can be paused indefinitely by clicking the || button",
" or by pressing p. Items can still be placed while paused,",
" however the Wave Timer will also continue to increase",
" - click the > button or press s to speed up the game",
" - flying enemies are not affected by traps",
" - one point is awarded for every enemy you destroy before it",
" reaches the final door",
" - play to get the highest score possible!"};
drawMultilineText(instructions, 18, 20, 50, 120, 0, LEFT, TOP);
drawText("Enemies:", 470, 100, 1, LEFT, TOP);
drawText("Note: flying enemies are not affected by traps", 470, 120, 0, LEFT, TOP);
for (i = 0; i < NUM_ENEMY_TYPES; i++) {
drawThumbEnemy(i, 480, i*50 + 155);
info = defenseInfo[ROCKET + NUM_CASTLE + 1 + i];
drawText(info.name, 510, i*50 + 140, 1, LEFT, TOP);
drawText(info.desc[0], 510, i*50 + 160, 0, LEFT, TOP);
}
drawText("Keyboard Shortcuts:", 750, 100, 1, LEFT, TOP);
char *keys[] = {"q",
"p",
"s",
"n",
"d",
"space",
"m"};
char *keyDesc[] = {"quit game (X button)",
"pause game (|| button)",
"speed up game (x4) (> button)",
"send next wave",
"delete defense",
"place defense",
"add $1000 (cheat)"};
drawMultilineText(keys, 7, 20, 750, 120, 0, LEFT, TOP);
drawMultilineText(keyDesc, 7, 20, 800, 120, 0, LEFT, TOP);
drawText("Press space to start", WIN_W - 100, WIN_H - 100, 2, RIGHT, BOTTOM);
}
void redrawScreen(){
// clear the buffer
XSetForeground(display, gc, grey.pixel);
XFillRectangle(display, buffer, gc, 0, 0, WIN_W, WIN_H);
// draw elements to buffer
if (showSplash) {
drawSplash();
} else {
drawStage();
drawCastle(&castle, 20, 20);
listForEach(eList, drawEnemy);
listForEach(bList, drawBullet);
drawTurrets();
drawTraps();
drawCovers();
drawUI();
if (pauseButton->pushed) {
XSetForeground(display, gc, red.pixel);
drawText("Paused", WIN_W/2, 360/2, 2, CENTER, CENTER);
}
}
// draw buffer to screen
XCopyArea(display, buffer, window, gc, 0, 0, WIN_W, WIN_H, 0, 0);
}
void programAnimation(){
int waitTime = 40;
long long cur_time;
cur_time = getTime();
if (speedButton->pushed) {
waitTime = 10;
}
if (abs(cur_time - old_time) > waitTime) {
old_time = cur_time;
if (pauseButton->pushed == 0) {
if (cur_time >= nextWaveTime) {
sendAndCreateWave();
}
listForEach(eList, moveEnemy);
targetDefenses();
moveTraps();
listForEach(bList, moveBullet);
checkCollisions();
checkTraps();
cleanupEnemies();
cleanupBullets();
}
redrawScreen();
}
}
void drawStage() {
int r, c;
XSetForeground(display, gc, dark_grey.pixel);
XFillRectangle(display, buffer, gc, 0, 60, WIN_W, 50);
XFillRectangle(display, buffer, gc, 0, 180, WIN_W, 50);
XFillRectangle(display, buffer, gc, 0, 300, WIN_W, 50);
// Roof
XDrawLine(display, buffer, floorGC, 0, 0, WIN_W, 0);
// 3rd Floor
XDrawLine(display, buffer, floorGC, 0, 120, WIN_W, 120);
// 2nd Floor
XDrawLine(display, buffer, floorGC, 0, 240, WIN_W, 240);
// 1st Floor
XDrawLine(display, buffer, floorGC, 0, 360, WIN_W, 360);
XSetForeground(display, gc, grey_10.pixel);
// 2-3 Stairs
XFillRectangle(display, buffer, gc, WIN_W - 80, 20, 60, 90);
XFillRectangle(display, buffer, gc, WIN_W - 80, 140, 60, 90);
// 1-2 Stairs
XFillRectangle(display, buffer, gc, 20, 140, 60, 90);
XFillRectangle(display, buffer, gc, 20, 260, 60, 90);
XSetForeground(display, gc, black.pixel);
// 2-3 Stairs
XDrawRectangle(display, buffer, gc, WIN_W - 80, 20, 60, 90);
XDrawRectangle(display, buffer, gc, WIN_W - 80, 140, 60, 90);
// 1-2 Stairs
XDrawRectangle(display, buffer, gc, 20, 140, 60, 90);
XDrawRectangle(display, buffer, gc, 20, 260, 60, 90);
// Grid
XSetForeground(display, gc, white.pixel);
for (r = 0; r < 3; r++) {
for(c = 1; c < (WIN_W / 100) - 1; c++) {
XDrawRectangle(display, buffer, gc, c*100 + 1, r * 120, 98, 9);
XDrawRectangle(display, buffer, gc, c*100 + 1, r * 120 + 110, 98, 9);
}
}
}
void deleteSelection() {
if (selection != NULL) {
if (selection->type < GUN) {
if (trapArray[selection->floor][selection->col] == selection) {
trapArray[selection->floor][selection->col] = NULL;
free(selection);
} else {
fprintf(stderr, "trapArray - selection mismatch\n");
}
} else {
if (turretArray[selection->floor][selection->col] == selection) {
turretArray[selection->floor][selection->col] = NULL;
free(selection);
} else {
fprintf(stderr, "turretArray - selection mismatch\n");
}
}
selection = NULL;
}
}
long long getTime() {
struct timeval tv;
long long result;
gettimeofday(&tv, 0);
result = (tv.tv_sec * 1000) + (tv.tv_usec / 1000);
return result;
}
void drawCovers() {
XSetForeground(display, gc, grey.pixel);
// 2-3 Stairs
XFillRectangle(display, buffer, gc, WIN_W - 20, 20, 20, 40);
XFillRectangle(display, buffer, gc, WIN_W - 20, 140, 20, 40);
// 1-2 Stairs
XFillRectangle(display, buffer, gc, 0, 140, 20, 40);
XFillRectangle(display, buffer, gc, 0, 260, 20, 40);
XSetForeground(display, gc, dark_grey.pixel);
// 2-3 Stairs
XFillRectangle(display, buffer, gc, WIN_W - 20, 60, 20, 50);
XFillRectangle(display, buffer, gc, WIN_W - 20, 180, 20, 50);
// 1-2 Stairs
XFillRectangle(display, buffer, gc, 0, 180, 20, 50);
XFillRectangle(display, buffer, gc, 0, 300, 20, 50);
XSetForeground(display, gc, black.pixel);
XDrawLine(display, buffer, gc, WIN_W - 20, 20, WIN_W - 20, 109);
XDrawLine(display, buffer, gc, WIN_W - 20, 140, WIN_W - 20, 229);
XDrawLine(display, buffer, gc, 20, 140, 20, 229);
XDrawLine(display, buffer, gc, 20, 260, 20, 349);
}
void drawUI() {
int i;
int nextWave_interval;
int nextWave_min;
int nextWave_sec;
char moneyStr[20];
char pointsStr[20];
char nextWaveStr[40];
// UI Background
XSetForeground(display, gc, grey_25.pixel);
XFillRectangle(display, buffer, gc, 0, 370, WIN_W, WIN_H - 370);
// info panel
XSetForeground(display, gc, grey.pixel);
XFillRectangle(display, buffer, gc, 670, 410, WIN_W - 680, 100);
XDrawRectangle(display, buffer, lineGC, 670, 410, WIN_W - 680, 100);
XSetForeground(display, gc, white.pixel);
// money
sprintf(moneyStr, "Money: $%d", money);
drawText(moneyStr, 10, 390, 1, LEFT, CENTER);
// points
sprintf(pointsStr, "Points: %d", points);
drawText(pointsStr, 120, 390, 1, LEFT, CENTER);
// next wave timer
nextWave_interval = (nextWaveTime - getTime())/1000;
nextWave_min = nextWave_interval / 60;
nextWave_sec = nextWave_interval - 60*nextWave_min;
sprintf(nextWaveStr, "Next Wave in %d:%02d x%d", nextWave_min, nextWave_sec, nextWave->size);
drawText(nextWaveStr, 670, 390, 1, LEFT, CENTER);
drawThumbEnemy(((Enemy*)(nextWave->first->item))->type, 805, 390);
// show/hide buttons
if (pushedButtons[SHOP] != NULL) {
if (pushedButtons[SHOP]->id == TURRET) {
listForEach(turretButtonList, makeVisible);
if (pushedButtons[TURRET] != NULL) {
drawInfo(((Defense*)(pushedButtons[TURRET]->item))->type);
}
// hide and deselect other buttons
if (pushedButtons[TRAP] != NULL) {
pushedButtons[TRAP]->pushed = 0;
}
pushedButtons[TRAP] = NULL;
if (pushedButtons[CASTLE] != NULL) {
pushedButtons[CASTLE]->pushed = 0;
}
pushedButtons[CASTLE] = NULL;
listForEach(trapButtonList, makeInvisible);
listForEach(castleButtonList, makeInvisible);
} else if (pushedButtons[SHOP]->id == TRAP) {
listForEach(trapButtonList, makeVisible);
if (pushedButtons[TRAP] != NULL) {
drawInfo(((Defense*)(pushedButtons[TRAP]->item))->type);
}
// hide and deselect other buttons
if (pushedButtons[TURRET] != NULL) {
pushedButtons[TURRET]->pushed = 0;
}
pushedButtons[TURRET] = NULL;
if (pushedButtons[CASTLE] != NULL) {
pushedButtons[CASTLE]->pushed = 0;
}
pushedButtons[CASTLE] = NULL;
listForEach(turretButtonList, makeInvisible);
listForEach(castleButtonList, makeInvisible);
} else if (pushedButtons[SHOP]->id == CASTLE) {
listForEach(castleButtonList, makeVisible);
if (pushedButtons[CASTLE] != NULL) {
drawInfo(((Castle*)(pushedButtons[CASTLE]->item))->type + ROCKET + 1);
}
// hide and deselect other buttons
if (pushedButtons[TRAP] != NULL) {
pushedButtons[TRAP]->pushed = 0;
}
pushedButtons[TRAP] = NULL;
if (pushedButtons[TURRET] != NULL) {
pushedButtons[TURRET]->pushed = 0;
}
pushedButtons[TURRET] = NULL;
listForEach(trapButtonList, makeInvisible);
listForEach(turretButtonList, makeInvisible);
}
} else {
// hide and deselect all buttons
if (pushedButtons[TRAP] != NULL) {
pushedButtons[TRAP]->pushed = 0;
}
pushedButtons[TRAP] = NULL;
if (pushedButtons[TURRET] != NULL) {
pushedButtons[TURRET]->pushed = 0;
}
pushedButtons[TURRET] = NULL;
if (pushedButtons[CASTLE] != NULL) {
pushedButtons[CASTLE]->pushed = 0;
}
pushedButtons[CASTLE] = NULL;
listForEach(trapButtonList, makeInvisible);
listForEach(turretButtonList, makeInvisible);
listForEach(castleButtonList, makeInvisible);
}
// draw all buttons
listForEach(buttonList, drawButton);
}
void drawInfo(int lookup) {
char price[6];
Info info;
info = defenseInfo[lookup];
sprintf(price, "$%d", info.price);
XSetForeground(display, gc, black.pixel);
drawText(info.name, 680, 420, 1, LEFT, TOP);
drawText(price, 980, 420, 1, RIGHT, TOP);
drawMultilineText(info.desc, 3, 20, 680, 440, 0, LEFT, TOP);
}
void clickUI(int x, int y) {
Node *cur, *next;
int i, j;
Button *b, *p;
cur = buttonList->first;
while (cur != NULL) {
next = cur->next;
b = cur->item;
if (b->visible && x > b->x && x < b->x + b->w && y > b->y && y < b->y + b->h) {
break;
}
cur = next;
}
if (cur != NULL) {
if (b->groupNum == -1) {
if (b->pushed) {
b->pushed = 0;
} else {
b->pushed = 1;
if (b->callback != NULL) {
b->callback();
}
}
} else {
if (b->pushed) {
b->pushed = 0;
pushedButtons[b->groupNum] = NULL;
} else {
p = pushedButtons[b->groupNum];
if (p != NULL) {
p->pushed = 0;
}
pushedButtons[b->groupNum] = b;
b->pushed = 1;
if (b->callback != NULL) {
b->callback();
}
}
}
}
}
Button* createButton(int x, int y, int w, int h, char* label, void *item, int visible, int id, ButtonGroup groupNum, void(*callback)()) {
int str_len;
Button *b;
b = (Button*)malloc(sizeof(Button));
b->x = x;
b->y = y;
b->w = w;
b->h = h;
b->pushed = 0;
b->visible = visible;
b->groupNum = groupNum;
b->id = id;
b->item = item;
b->callback = callback;
if (label != NULL) {
str_len = strlen(label);
b->label = (char*)malloc((str_len + 1) * sizeof(char));
strcpy(b->label, label);
} else {
b->label = NULL;
}
return b;
}
void makeVisible(void *vb) {
Button *b;
b = vb;
b->visible = 1;
}
void makeInvisible(void *vb) {
Button *b;
b = vb;
b->visible = 0;
}
void drawButton(void *vb) {
Button *b;
if (vb == NULL) {
return;
}
b = vb;
if (b->visible == 0) {
return;
}
if (b->item == NULL) {
// text button
if (b->pushed) {
XSetForeground(display, gc, grey_50.pixel);
} else {
XSetForeground(display, gc, grey.pixel);
}
XFillRectangle(display, buffer, gc, b->x, b->y, b->w, b->h);
XDrawRectangle(display, buffer, lineGC, b->x, b->y, b->w, b->h);
XSetForeground(display, gc, black.pixel);
if (b->label != NULL) {
drawText(b->label, b->x + (b->w / 2), b->y + (b->h / 2), 0, CENTER, CENTER);
}
} else {
// image BUTTON
XSetForeground(display, gc, grey.pixel);
XFillRectangle(display, buffer, gc, b->x, b->y, b->w, b->h/2);
XSetForeground(display, gc, dark_grey.pixel);
XFillRectangle(display, buffer, gc, b->x, b->y + b->h/2, b->w, b->h/2);
if (b->groupNum == CASTLE) {
drawCastle((Castle*)b->item, b->x + 20, b->y + 10);
} else {
drawDefense(b->item);
}
if (b->pushed) {
XSetForeground(display, lineGC, blue.pixel);
XSetLineAttributes(display, lineGC, 3, LineSolid, CapButt, JoinMiter);
}
XDrawRectangle(display, buffer, lineGC, b->x, b->y, b->w, b->h);
XSetForeground(display, lineGC, black.pixel);
XSetLineAttributes(display, lineGC, 1, LineSolid, CapButt, JoinMiter);
}
}
void freeButtonPointers(void *vb) {
Button *b;
b = vb;
if (b->item != NULL) {
free(b->item);
}
if (b->label != NULL) {
free(b->label);
}
}
void drawText(char* string, int x, int y, int font_num, Alignment hAlign, Alignment vAlign) {
int string_width = XTextWidth(font_info[font_num], string, strlen(string));
int actualX, actualY;
int font_height = font_info[font_num]->ascent;
if (hAlign == CENTER) {
actualX = x - (string_width / 2);
} else if (hAlign == RIGHT) {
actualX = x - string_width;
} else {
actualX = x;
}
if (vAlign == CENTER) {
actualY = y + (font_height / 2);
} else if (vAlign == TOP) {
actualY = y + font_height;
} else {
actualY = y;
}
XSetFont(display, gc, font_info[font_num]->fid);
XDrawString(display, buffer, gc, actualX, actualY, string, strlen(string));
}
void drawMultilineText(char* strings[], int nlines, int line_height, int x, int y, int font_num, Alignment hAlign, Alignment vAlign) {
int i;
int string_width, font_height, total_height;
int actualX, actualY;
char *cur_string;
font_height = font_info[font_num]->ascent;
total_height = (nlines - 1) * line_height + font_height;
if (vAlign == CENTER) {
actualY = y - (total_height / 2) + font_height;
} else if (vAlign == TOP) {
actualY = y + font_height;
} else {
actualY = y - total_height + font_height;
}
XSetFont(display, gc, font_info[font_num]->fid);
for (i = 0; i < nlines; i++) {
cur_string = strings[i];
string_width = XTextWidth(font_info[font_num], cur_string, strlen(cur_string));
if (hAlign == CENTER) {
actualX = x - (string_width / 2);
} else if (hAlign == RIGHT) {
actualX = x - string_width;
} else {
actualX = x;
}
XDrawString(display, buffer, gc, actualX, actualY + i * line_height, cur_string, strlen(cur_string));
}
}
void printFonts() {
int numFonts, i;
char ** fonts;
fonts = XListFonts(display, "*-helvetica-*", 500, &numFonts);
for (i = 0; i < numFonts; i++) {
fprintf(stderr, "%s\n", fonts[i]);
}
}
void rotatePoints(XPoint *points, int npoints, int rx, int ry, float a) {