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<h2 id="head-3f7b3d8f8728f2728e734847c6253d8e5c3b3fd1">Effects of Difficulty Setting</h2>
<span class="anchor" id="line-2"></span><span class="anchor" id="line-3"></span><p class="line862">Difficulty in quake4 is driven by the cvar <strong>g_skill</strong>, which is modified when the player picks a difficulty level at the console and preserved when the player saves his game. What this means for the designer: <span class="anchor" id="line-4"></span><span class="anchor" id="line-5"></span><ul><li>AI aggressiveness is modified by changing their aggressiveScale, which determines frequency of attacks among other things: <span class="anchor" id="line-6"></span><ul><li>Easy: combat.aggressiveScale will be 1.0. <span class="anchor" id="line-7"></span></li><li>Normal: combat.aggressiveScale will be between 1.0 and 1.25. <span class="anchor" id="line-8"></span></li><li>Hard: combat.aggressiveScale will be between 1.25 and 1.5. <span class="anchor" id="line-9"></span></li><li>Hardest: combat.aggressiveScale will be between 1.5 and 1.75. <span class="anchor" id="line-10"></span></li></ul></li><li>Marine Buddy Health Changes: <span class="anchor" id="line-11"></span><ul><li>Easy: Adjusted health is 1.2 times the original health. <span class="anchor" id="line-12"></span></li><li>Hard: Adjusted health is 1.2 times the original health. <span class="anchor" id="line-13"></span></li><li>Hardest: Adjusted health is 1.4 times the original health. <span class="anchor" id="line-14"></span></li></ul></li><li>Strogg Health Changes: <span class="anchor" id="line-15"></span><ul><li>Easy: Adjusted health is 0.7 times the original health. <span class="anchor" id="line-16"></span></li><li>Normal: Adjusted health is 1.0 times the original health. <span class="anchor" id="line-17"></span></li><li>Hard: Adjusted health is 1.4 times the original health. <span class="anchor" id="line-18"></span></li><li>Hardest: Adjusted health is 1.8 times the original health. <span class="anchor" id="line-19"></span></li></ul></li><li>Scale of damage taken by player (excluding melee): <span class="anchor" id="line-20"></span><ul><li>Easy: Adjusted damage will be 0.8 times the original damage (rounded up to a minimum 1 damage). <span class="anchor" id="line-21"></span></li><li>Normal: Adjusted damage will be 1.0 times the original damage. <span class="anchor" id="line-22"></span></li><li>Hard: Adjusted damage will be 1.7 times the original damage. <span class="anchor" id="line-23"></span></li><li>Hardest: Adjusted damage will be 3.5 times the original damage. <span class="anchor" id="line-24"></span></li></ul></li><li>Minimum player health on savegame restore: <span class="anchor" id="line-25"></span><ul><li>Easy or Normal: You will have at least 25 health on spawn. <span class="anchor" id="line-26"></span></li></ul></li><li>AI will never intentionally miss melee attacks on the hardest setting. <span class="anchor" id="line-27"></span></li><li>Dynamic protection (which reduces damage incrementally for high frequency attacks) isn't enabled on the hardest setting. <span class="anchor" id="line-28"></span></li><li>Certain entities will not spawn depending on certain key values at certain difficulty levels: <span class="anchor" id="line-29"></span><ul><li>Easy: Will not spawn if "not_easy" "1" is specified on the entity or in its entityDef. <span class="anchor" id="line-30"></span></li><li>Normal: Will not spawn if "not_medium" "1" is specified on the entity or in its entityDef. <span class="anchor" id="line-31"></span></li><li>Hard: Will not spawn if "not_hard" "1" is specified on the entity or in its entityDef. <span class="anchor" id="line-32"></span></li><li>Hardest: Also will not spawn if "not_hard" "1" is specified on the entity or in its entityDef. <span class="anchor" id="line-33"></span><span class="anchor" id="line-34"></span></li></ul></li></ul><p class="line862">Note that on the harder difficulties, the buddy AI actually gets <em>healthier</em>, and this is simply to offset the punshing damage dealt by the enemies in those harder difficulties. In addition, marine buddies who are flagged as mission critical (i.e. you will game over i
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