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annotate xrogue/encumb.c @ 236:7c1cb43f346e

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XRogue: get rid of VOID as an alias for long. Maybe some compilers in 1986 didn't handle void pointers well, but they are no longer a concern.
author John "Elwin" Edwards
date Mon, 07 Mar 2016 20:44:01 -0500
parents f54901b9c39b
children e52a8a7ad4c5
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133
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1 /*
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2 encumb.c - Stuff to do with encumberance
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3
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4 XRogue: Expeditions into the Dungeons of Doom
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5 Copyright (C) 1991 Robert Pietkivitch
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6 All rights reserved.
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7
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8 Based on "Advanced Rogue"
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9 Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
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10 All rights reserved.
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11
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12 See the file LICENSE.TXT for full copyright and licensing information.
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13 */
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14
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15 #include <curses.h>
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16 #include "rogue.h"
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17
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18 int packweight(struct thing *tp);
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19
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20 /*
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21 * updpack:
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22 * Update his pack weight and adjust fooduse accordingly
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23 */
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24
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25 void
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26 updpack(int getmax, struct thing *tp)
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27 {
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28
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29 reg int topcarry, curcarry;
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30
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31 if (getmax)
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32 tp->t_stats.s_carry = totalenc(tp); /* get total encumb */
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33 curcarry = packweight(tp); /* get pack weight */
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34
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35 /* Only update food use for the player (for now) */
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36 if (tp == &player) {
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37 topcarry = tp->t_stats.s_carry / 5; /* 20% of total carry */
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38 if(curcarry > 4 * topcarry) {
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39 if(rnd(100) < 80)
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40 foodlev = 3; /* > 80% of pack */
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41 } else if(curcarry > 3 * topcarry) {
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42 if(rnd(100) < 60)
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43 foodlev = 2; /* > 60% of pack */
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44 } else
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45 foodlev = 1; /* <= 60% of pack */
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46 }
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47 tp->t_stats.s_pack = curcarry; /* update pack weight */
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48 }
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49
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50
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51 /*
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52 * packweight:
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53 * Get the total weight of the hero's pack
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54 */
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55
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56 int
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57 packweight(struct thing *tp)
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58 {
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59 reg struct object *obj;
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60 reg struct linked_list *pc;
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61 reg int weight;
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62
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63 weight = 0;
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64 for (pc = tp->t_pack ; pc != NULL ; pc = next(pc)) {
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65 obj = OBJPTR(pc);
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66 weight += itemweight(obj);
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67 }
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68 if (weight < 0) /* in case of amulet */
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69 weight = 0;
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70
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71 /* If this is the player, is he wearing a ring of carrying? */
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72 if (tp == &player && ISWEARING(R_CARRY)) {
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73 register int temp, i;
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74
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75 temp = 0;
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76 for (i=0; i<NUM_FINGERS; i++) {
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77 if (cur_ring[i] != NULL && cur_ring[i]->o_which == R_CARRY) {
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78 if (cur_ring[i]->o_flags & ISCURSED) temp--;
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79 else temp += 2;
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80 }
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81 }
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82 weight -= (temp * weight) / 4;
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83 }
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84
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85 return(weight);
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86 }
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87
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88 /*
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89 * itemweight:
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90 * Get the weight of an object
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91 */
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92
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93 int
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94 itemweight(struct object *wh)
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95 {
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96 reg int weight;
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97 reg int ac;
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98
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99 weight = wh->o_weight; /* get base weight */
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100 switch(wh->o_type) {
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101 case ARMOR:
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102 /*
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103 * subtract 10% for each enchantment
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104 * this will add weight for negative items
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105 */
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106 ac = armors[wh->o_which].a_class - wh->o_ac;
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107 weight = ((weight*10) - (weight*ac)) / 10;
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108 if (weight < 0) weight = 0;
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109 when WEAPON:
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110 if ((wh->o_hplus + wh->o_dplus) > 0)
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111 weight /= 2;
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112 }
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113 if(wh->o_flags & ISCURSED)
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114 weight += weight / 5; /* 20% more for cursed */
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115 weight *= wh->o_count;
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116 return(weight);
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117 }
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118
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119 /*
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120 * playenc:
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121 * Get hero's carrying ability above norm
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122 */
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123
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124 int
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125 playenc(struct thing *tp)
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126 {
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127 register int strength;
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128
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129 if (tp == &player) strength = str_compute();
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130 else strength = tp->t_stats.s_str;
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131
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132 return ((strength-8)*50);
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133 }
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134
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135 /*
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136 * totalenc:
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137 * Get total weight that the hero can carry
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138 */
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139
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140 int
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141 totalenc(struct thing *tp)
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142 {
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143 reg int wtotal;
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144
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145 wtotal = NORMENCB + playenc(tp);
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146 if (tp == &player) switch(hungry_state) {
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147 case F_SATIATED:
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148 case F_OKAY:
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149 case F_HUNGRY: ; /* no change */
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150 when F_WEAK: wtotal -= wtotal / 10; /* 10% off weak */
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151 when F_FAINT: wtotal /= 2; /* 50% off faint */
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152 }
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153 return(wtotal);
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154 }
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155
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156 /*
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157 * whgtchk:
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158 * See if the hero can carry his pack
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159 */
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160
220
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161 void
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162 wghtchk(void)
133
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163 {
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164 reg int dropchk, err = TRUE;
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165 reg char ch;
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166
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167 inwhgt = TRUE;
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168 if (pstats.s_pack > pstats.s_carry) {
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169 ch = mvwinch(stdscr, hero.y, hero.x);
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170 if((ch != FLOOR && ch != PASSAGE)) {
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171 extinguish(wghtchk);
236
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172 fuse(wghtchk, NULL, 1, AFTER);
133
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173 inwhgt = FALSE;
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174 return;
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175 }
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176 extinguish(wghtchk);
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177 msg("Your pack is far too heavy for you.. ");
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178 do {
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179 dropchk = drop((struct linked_list *)NULL);
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180 if(dropchk == 0) {
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181 mpos = 0;
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182 msg("You must drop something");
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183 }
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184 if(dropchk == TRUE)
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185 err = FALSE;
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186 } while(err);
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187 }
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188 inwhgt = FALSE;
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189 }
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190
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191 /*
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192 * hitweight:
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193 * Gets the fighting ability according to current weight
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194 * This returns a +1 hit for light pack weight
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195 * 0 hit for medium pack weight
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196 * -1 hit for heavy pack weight
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197 */
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198
220
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199 int
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200 hitweight(void)
133
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201 {
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202 return(2 - foodlev);
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203 }
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204