Expandable projectiles - AndroidQuazar/VanillaExpandedFramework GitHub Wiki
Expandable projectile def can be used to create flames or other liquid-shaped projectiles that need to expand in size. The basic XML example is:
<VFECore.ExpandableProjectileDef ParentName="BaseBullet">
<defName>Flamethrower</defName>
<label>flamethrower</label>
<thingClass>VFECore.FlamethrowProjectile</thingClass> <!-- this class inherited from the ExpandableProjectile class, it inherits the DoDamage method, which is responsible for the appearance of fire and damaging all things under the projectile -->
<graphicData>
<texPath>Flamer</texPath> <!-- main texture series, it's just a folder with textures. it sorts them alphabetically, there is no need to fill in A-Z at the end and you are also not limited to all letters of the alphabet, 01, 02 will do -->
<texPathFadeOut>FlamerFadeOut</texPathFadeOut> <!-- optional, if set, fading out textures will be used in final projectile moments -->
<shaderType>MoteGlow</shaderType> <!-- optional, if not set, it will use defaul shader>
<color></color> <!--optional, you can set the opacity via alpha channel -->
</graphicData>
<projectile> <!-- vanilla projectile field -->
<damageDef>Flame</damageDef>
<speed>25</speed>
<damageAmountBase>1</damageAmountBase>
<explosionRadius>0.1</explosionRadius >
<ai_IsIncendiary>true</ai_IsIncendiary>
</projectile>
<drawOffscreen>true</drawOffscreen> <!-- needed to draw them properly -->
<lifeTimeDuration>70</lifeTimeDuration> <!-- total life time duration, the counter counts every tickFrameRate property -->
<widthScaleFactor>0.75</widthScaleFactor> <!-- optional, will scale the width of the projectile textures -->
<heightScaleFactor>1</heightScaleFactor> <!-- optional, will scale the heigth of the projectile textures -->
<startingPositionOffset>(0, 0, -1)</startingPositionOffset> <!-- if you need to position starting projectile position (for big dragons and flamethrowers etc -->
<totalSizeScale>1.15</totalSizeScale> <!-- optional, will scale the size of projectile textures. was needed in order to scale Oskars textures properly to fit them after the shooter -->
<tickFrameRate>3</tickFrameRate> <!-- speed of changing textures per ticks -->
<finalTickFrameRate>9</finalTickFrameRate> <!-- speed of changing fade out textures per ticks -->
<tickDamageRate>1</tickDamageRate> <!-- determines through which each tick the damage is done by the custom class (fire class for example) -->
<minDistanceToAffect>2</minDistanceToAffect> <!-- can be set to ignore the affected cells nearby (useful if you do not need to burn sandbags or other buildings)
</VFECore.ExpandableProjectileDef>